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5642 lines
130 KiB
C
5642 lines
130 KiB
C
/* readline.c -- a general facility for reading lines of input
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with emacs style editing and completion. */
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/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
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This file contains the Readline Library (the Library), a set of
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routines for providing Emacs style line input to programs that ask
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for it.
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The Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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The Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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The GNU General Public License is often shipped with GNU software, and
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is generally kept in a file called COPYING or LICENSE. If you do not
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have a copy of the license, write to the Free Software Foundation,
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675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Remove these declarations when we have a complete libgnu.a. */
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#define STATIC_MALLOC
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#ifndef STATIC_MALLOC
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extern char *xmalloc (), *xrealloc ();
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#else
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static char *xmalloc (), *xrealloc ();
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/file.h>
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#include <signal.h>
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#ifdef __GNUC__
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#define alloca __builtin_alloca
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#else
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#if defined (sparc) && defined (sun)
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#include <alloca.h>
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#endif
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#endif
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#define NEW_TTY_DRIVER
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#if defined (SYSV) || defined (hpux) || defined (Xenix)
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#undef NEW_TTY_DRIVER
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#include <termio.h>
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#else
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#include <sgtty.h>
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#endif
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#include <errno.h>
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extern int errno;
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#include <setjmp.h>
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/* These next are for filename completion. Perhaps this belongs
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in a different place. */
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#include <sys/stat.h>
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#include <pwd.h>
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#ifdef SYSV
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struct passwd *getpwuid (), *getpwent ();
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#endif
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#define HACK_TERMCAP_MOTION
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#ifndef SYSV
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#include <sys/dir.h>
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#else /* SYSV */
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#if defined (Xenix)
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#include <sys/ndir.h>
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#else
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#ifdef hpux
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#include <ndir.h>
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#else
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#include <dirent.h>
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#define direct dirent
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#define d_namlen d_reclen
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#endif /* hpux */
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#endif /* xenix */
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#endif /* SYSV */
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/* Some standard library routines. */
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#include "readline.h"
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#include "history.h"
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#ifndef digit
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#define digit(c) ((c) >= '0' && (c) <= '9')
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#endif
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#ifndef isletter
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#define isletter(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
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#endif
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#ifndef digit_value
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#define digit_value(c) ((c) - '0')
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#endif
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#ifndef member
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char *index ();
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#define member(c, s) ((c) ? index ((s), (c)) : 0)
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#endif
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#ifndef isident
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#define isident(c) ((isletter(c) || digit(c) || c == '_'))
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#endif
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#ifndef exchange
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#define exchange(x, y) {int temp = x; x = y; y = temp;}
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#endif
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static update_line ();
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static void output_character_function ();
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static delete_chars ();
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static delete_chars ();
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static insert_some_chars ();
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#ifdef VOID_SIGHANDLER
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#define sighandler void
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#else
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#define sighandler int
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#endif
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/* This typedef is equivalant to the one for Function; it allows us
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to say SigHandler *foo = signal (SIGKILL, SIG_IGN); */
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typedef sighandler SigHandler ();
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/* If on, then readline handles signals in a way that doesn't screw. */
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#define HANDLE_SIGNALS
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/* **************************************************************** */
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/* */
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/* Line editing input utility */
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/* */
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/* **************************************************************** */
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/* A pointer to the keymap that is currently in use.
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By default, it is the standard emacs keymap. */
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Keymap keymap = emacs_standard_keymap;
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#define vi_mode 0
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#define emacs_mode 1
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/* The current style of editing. */
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int rl_editing_mode = emacs_mode;
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/* Non-zero if the previous command was a kill command. */
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static int last_command_was_kill = 0;
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/* The current value of the numeric argument specified by the user. */
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int rl_numeric_arg = 1;
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/* Non-zero if an argument was typed. */
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int rl_explicit_arg = 0;
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/* Temporary value used while generating the argument. */
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static int arg_sign = 1;
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/* Non-zero means we have been called at least once before. */
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static int rl_initialized = 0;
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/* If non-zero, this program is running in an EMACS buffer. */
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static char *running_in_emacs = (char *)NULL;
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/* The current offset in the current input line. */
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int rl_point;
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/* Mark in the current input line. */
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int rl_mark;
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/* Length of the current input line. */
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int rl_end;
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/* Make this non-zero to return the current input_line. */
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int rl_done;
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/* The last function executed by readline. */
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Function *rl_last_func = (Function *)NULL;
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/* Top level environment for readline_internal (). */
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static jmp_buf readline_top_level;
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/* The streams we interact with. */
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static FILE *in_stream, *out_stream;
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/* The names of the streams that we do input and output to. */
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FILE *rl_instream = stdin, *rl_outstream = stdout;
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/* Non-zero means echo characters as they are read. */
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int readline_echoing_p = 1;
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/* Current prompt. */
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char *rl_prompt;
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/* The number of characters read in order to type this complete command. */
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int rl_key_sequence_length = 0;
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/* If non-zero, then this is the address of a function to call just
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before readline_internal () prints the first prompt. */
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Function *rl_startup_hook = (Function *)NULL;
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/* If non-zero, then this is the address of a function to call when
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completing on a directory name. The function is called with
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the address of a string (the current directory name) as an arg. */
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Function *rl_symbolic_link_hook = (Function *)NULL;
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/* What we use internally. You should always refer to RL_LINE_BUFFER. */
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static char *the_line;
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/* The character that can generate an EOF. Really read from
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the terminal driver... just defaulted here. */
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static int eof_char = CTRL ('D');
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/* Non-zero makes this the next keystroke to read. */
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int rl_pending_input = 0;
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/* Pointer to a useful terminal name. */
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char *rl_terminal_name = (char *)NULL;
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/* Line buffer and maintenence. */
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char *rl_line_buffer = (char *)NULL;
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static int rl_line_buffer_len = 0;
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#define DEFAULT_BUFFER_SIZE 256
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/* **************************************************************** */
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/* */
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/* `Forward' declarations */
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/* */
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/* **************************************************************** */
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/* Non-zero means do not parse any lines other than comments and
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parser directives. */
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static unsigned char parsing_conditionalized_out = 0;
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/* Caseless strcmp (). */
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static int stricmp (), strnicmp ();
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/* Non-zero means to save keys that we dispatch on in a kbd macro. */
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static int defining_kbd_macro = 0;
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/* **************************************************************** */
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/* */
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/* Top Level Functions */
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/* */
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/* **************************************************************** */
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/* Read a line of input. Prompt with PROMPT. A NULL PROMPT means
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none. A return value of NULL means that EOF was encountered. */
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char *
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readline (prompt)
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char *prompt;
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{
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static rl_prep_terminal (), rl_deprep_terminal ();
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char *readline_internal ();
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char *value;
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rl_prompt = prompt;
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/* If we are at EOF return a NULL string. */
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if (rl_pending_input == EOF)
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{
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rl_pending_input = 0;
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return ((char *)NULL);
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}
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rl_initialize ();
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rl_prep_terminal ();
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#ifdef HANDLE_SIGNALS
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rl_set_signals ();
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#endif
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value = readline_internal ();
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rl_deprep_terminal ();
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#ifdef HANDLE_SIGNALS
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rl_clear_signals ();
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#endif
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return (value);
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}
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/* Read a line of input from the global rl_instream, doing output on
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the global rl_outstream.
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If rl_prompt is non-null, then that is our prompt. */
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char *
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readline_internal ()
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{
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int lastc, c, eof_found;
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in_stream = rl_instream; out_stream = rl_outstream;
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lastc = eof_found = 0;
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if (rl_startup_hook)
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(*rl_startup_hook) ();
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if (!readline_echoing_p)
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{
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if (rl_prompt)
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{
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fprintf (out_stream, "%s", rl_prompt);
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fflush (out_stream);
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}
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}
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else
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{
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rl_on_new_line ();
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rl_redisplay ();
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#ifdef VI_MODE
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if (rl_editing_mode == vi_mode)
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rl_vi_insertion_mode ();
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#endif /* VI_MODE */
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}
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while (!rl_done)
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{
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int lk = last_command_was_kill;
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int code = setjmp (readline_top_level);
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if (code)
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rl_redisplay ();
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if (!rl_pending_input)
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{
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/* Then initialize the argument and number of keys read. */
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rl_init_argument ();
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rl_key_sequence_length = 0;
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}
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c = rl_read_key ();
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/* EOF typed to a non-blank line is a <NL>. */
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if (c == EOF && rl_end)
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c = NEWLINE;
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/* The character eof_char typed to blank line, and not as the
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previous character is interpreted as EOF. */
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if (((c == eof_char && lastc != c) || c == EOF) && !rl_end)
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{
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eof_found = 1;
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break;
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}
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lastc = c;
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rl_dispatch (c, keymap);
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/* If there was no change in last_command_was_kill, then no kill
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has taken place. Note that if input is pending we are reading
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a prefix command, so nothing has changed yet. */
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if (!rl_pending_input)
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{
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if (lk == last_command_was_kill)
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last_command_was_kill = 0;
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}
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#ifdef VI_MODE
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/* In vi mode, when you exit insert mode, the cursor moves back
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over the previous character. We explicitly check for that here. */
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if (rl_editing_mode == vi_mode && keymap == vi_movement_keymap)
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rl_vi_check ();
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#endif
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if (!rl_done)
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rl_redisplay ();
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}
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/* Restore the original of this history line, iff the line that we
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are editing was originally in the history, AND the line has changed. */
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{
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HIST_ENTRY *entry = current_history ();
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if (entry && rl_undo_list)
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{
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char *temp = savestring (the_line);
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rl_revert_line ();
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entry = replace_history_entry (where_history (), the_line,
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(HIST_ENTRY *)NULL);
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free_history_entry (entry);
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strcpy (the_line, temp);
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free (temp);
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}
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}
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/* At any rate, it is highly likely that this line has an undo list. Get
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rid of it now. */
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if (rl_undo_list)
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free_undo_list ();
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if (eof_found)
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return (char *)NULL;
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else
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return (savestring (the_line));
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}
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/* **************************************************************** */
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/* */
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/* Signal Handling */
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/* */
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/* **************************************************************** */
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#ifdef SIGWINCH
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static SigHandler *old_sigwinch = (SigHandler *)NULL;
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static sighandler
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rl_handle_sigwinch (sig, code, scp)
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int sig, code;
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struct sigcontext *scp;
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{
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char *term = rl_terminal_name, *getenv ();
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if (readline_echoing_p)
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{
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if (!term)
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term = getenv ("TERM");
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if (!term)
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term = "dumb";
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rl_reset_terminal (term);
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#ifdef NEVER
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crlf ();
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rl_forced_update_display ();
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#endif
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}
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if (old_sigwinch &&
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old_sigwinch != (SigHandler *)SIG_IGN &&
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old_sigwinch != (SigHandler *)SIG_DFL)
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(*old_sigwinch)(sig, code, scp);
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}
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#endif /* SIGWINCH */
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#ifdef HANDLE_SIGNALS
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/* Interrupt handling. */
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static SigHandler *old_int = (SigHandler *)NULL,
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*old_tstp = (SigHandler *)NULL,
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*old_ttou = (SigHandler *)NULL,
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*old_ttin = (SigHandler *)NULL,
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*old_cont = (SigHandler *)NULL;
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/* Handle an interrupt character. */
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static sighandler
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rl_signal_handler (sig, code, scp)
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int sig, code;
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struct sigcontext *scp;
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{
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static rl_prep_terminal (), rl_deprep_terminal ();
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switch (sig)
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{
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case SIGINT:
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free_undo_list ();
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rl_clear_message ();
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rl_init_argument ();
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#ifdef SIGTSTP
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case SIGTSTP:
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case SIGTTOU:
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case SIGTTIN:
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#endif
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rl_clean_up_for_exit ();
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rl_deprep_terminal ();
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||
rl_clear_signals ();
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rl_pending_input = 0;
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||
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kill (getpid (), sig);
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||
sigsetmask (0);
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||
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rl_prep_terminal ();
|
||
rl_set_signals ();
|
||
}
|
||
}
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||
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rl_set_signals ()
|
||
{
|
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old_int = (SigHandler *)signal (SIGINT, rl_signal_handler);
|
||
if (old_int == (SigHandler *)SIG_IGN)
|
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signal (SIGINT, SIG_IGN);
|
||
|
||
#ifdef SIGTSTP
|
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old_tstp = (SigHandler *)signal (SIGTSTP, rl_signal_handler);
|
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if (old_tstp == (SigHandler *)SIG_IGN)
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signal (SIGTSTP, SIG_IGN);
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#endif
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#ifdef SIGTTOU
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old_ttou = (SigHandler *)signal (SIGTTOU, rl_signal_handler);
|
||
old_ttin = (SigHandler *)signal (SIGTTIN, rl_signal_handler);
|
||
|
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if (old_tstp == (SigHandler *)SIG_IGN)
|
||
{
|
||
signal (SIGTTOU, SIG_IGN);
|
||
signal (SIGTTIN, SIG_IGN);
|
||
}
|
||
#endif
|
||
|
||
#ifdef SIGWINCH
|
||
old_sigwinch = (SigHandler *)signal (SIGWINCH, rl_handle_sigwinch);
|
||
#endif
|
||
}
|
||
|
||
rl_clear_signals ()
|
||
{
|
||
signal (SIGINT, old_int);
|
||
|
||
#ifdef SIGTSTP
|
||
signal (SIGTSTP, old_tstp);
|
||
#endif
|
||
|
||
#ifdef SIGTTOU
|
||
signal (SIGTTOU, old_ttou);
|
||
signal (SIGTTIN, old_ttin);
|
||
#endif
|
||
|
||
#ifdef SIGWINCH
|
||
signal (SIGWINCH, old_sigwinch);
|
||
#endif
|
||
}
|
||
#endif /* HANDLE_SIGNALS */
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Character Input Buffering */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* If the terminal was in xoff state when we got to it, then xon_char
|
||
contains the character that is supposed to start it again. */
|
||
static int xon_char, xoff_state;
|
||
static int pop_index = 0, push_index = 0, ibuffer_len = 511;
|
||
static unsigned char ibuffer[512];
|
||
|
||
/* Non-null means it is a pointer to a function to run while waiting for
|
||
character input. */
|
||
Function *rl_event_hook = (Function *)NULL;
|
||
|
||
#define any_typein (push_index != pop_index)
|
||
|
||
/* Add KEY to the buffer of characters to be read. */
|
||
rl_stuff_char (key)
|
||
int key;
|
||
{
|
||
if (key == EOF)
|
||
{
|
||
key = NEWLINE;
|
||
rl_pending_input = EOF;
|
||
}
|
||
ibuffer[push_index++] = key;
|
||
if (push_index >= ibuffer_len)
|
||
push_index = 0;
|
||
}
|
||
|
||
/* Return the amount of space available in the
|
||
buffer for stuffing characters. */
|
||
int
|
||
ibuffer_space ()
|
||
{
|
||
if (pop_index > push_index)
|
||
return (pop_index - push_index);
|
||
else
|
||
return (ibuffer_len - (push_index - pop_index));
|
||
}
|
||
|
||
/* Get a key from the buffer of characters to be read.
|
||
Return the key in KEY.
|
||
Result is KEY if there was a key, or 0 if there wasn't. */
|
||
int
|
||
rl_get_char (key)
|
||
int *key;
|
||
{
|
||
if (push_index == pop_index)
|
||
return (0);
|
||
|
||
*key = ibuffer[pop_index++];
|
||
|
||
if (pop_index >= ibuffer_len)
|
||
pop_index = 0;
|
||
|
||
return (1);
|
||
}
|
||
|
||
/* Stuff KEY into the *front* of the input buffer.
|
||
Returns non-zero if successful, zero if there is
|
||
no space left in the buffer. */
|
||
int
|
||
rl_unget_char (key)
|
||
int key;
|
||
{
|
||
if (ibuffer_space ())
|
||
{
|
||
pop_index--;
|
||
if (pop_index < 0)
|
||
pop_index = ibuffer_len - 1;
|
||
ibuffer[pop_index] = key;
|
||
return (1);
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
/* If a character is available to be read, then read it
|
||
and stuff it into IBUFFER. Otherwise, just return. */
|
||
rl_gather_tyi ()
|
||
{
|
||
int tty = fileno (in_stream);
|
||
register int tem, result = -1;
|
||
long chars_avail;
|
||
char input;
|
||
|
||
#ifdef FIONREAD
|
||
result = ioctl (tty, FIONREAD, &chars_avail);
|
||
#endif
|
||
|
||
if (result == -1)
|
||
{
|
||
fcntl (tty, F_SETFL, O_NDELAY);
|
||
chars_avail = read (tty, &input, 1);
|
||
fcntl (tty, F_SETFL, 0);
|
||
if (chars_avail == -1 && errno == EAGAIN)
|
||
return;
|
||
}
|
||
|
||
tem = ibuffer_space ();
|
||
|
||
if (chars_avail > tem)
|
||
chars_avail = tem;
|
||
|
||
/* One cannot read all of the available input. I can only read a single
|
||
character at a time, or else programs which require input can be
|
||
thwarted. If the buffer is larger than one character, I lose.
|
||
Damn! */
|
||
if (tem < ibuffer_len)
|
||
chars_avail = 0;
|
||
|
||
if (result != -1)
|
||
{
|
||
while (chars_avail--)
|
||
rl_stuff_char (rl_getc (in_stream));
|
||
}
|
||
else
|
||
{
|
||
if (chars_avail)
|
||
rl_stuff_char (input);
|
||
}
|
||
}
|
||
|
||
/* Read a key, including pending input. */
|
||
int
|
||
rl_read_key ()
|
||
{
|
||
int c;
|
||
|
||
rl_key_sequence_length++;
|
||
|
||
if (rl_pending_input)
|
||
{
|
||
c = rl_pending_input;
|
||
rl_pending_input = 0;
|
||
}
|
||
else
|
||
{
|
||
static int next_macro_key ();
|
||
|
||
/* If input is coming from a macro, then use that. */
|
||
if (c = next_macro_key ())
|
||
return (c);
|
||
|
||
/* If the user has an event function, then call it periodically. */
|
||
if (rl_event_hook)
|
||
{
|
||
while (rl_event_hook && !rl_get_char (&c))
|
||
{
|
||
(*rl_event_hook) ();
|
||
rl_gather_tyi ();
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (!rl_get_char (&c))
|
||
c = rl_getc (in_stream);
|
||
}
|
||
}
|
||
|
||
#ifdef NEVER /* This breaks supdup to 4.0.3c machines. */
|
||
#ifdef TIOCSTART
|
||
/* Ugh. But I can't think of a better way. */
|
||
if (xoff_state && c == xon_char)
|
||
{
|
||
ioctl (fileno (in_stream), TIOCSTART, 0);
|
||
xoff_state = 0;
|
||
return (rl_read_key ());
|
||
}
|
||
#endif /* TIOCSTART */
|
||
#endif
|
||
|
||
return (c);
|
||
}
|
||
|
||
/* I'm beginning to hate the declaration rules for various compilers. */
|
||
static void add_macro_char ();
|
||
|
||
/* Do the command associated with KEY in MAP.
|
||
If the associated command is really a keymap, then read
|
||
another key, and dispatch into that map. */
|
||
rl_dispatch (key, map)
|
||
register int key;
|
||
Keymap map;
|
||
{
|
||
|
||
if (defining_kbd_macro)
|
||
add_macro_char (key);
|
||
|
||
if (key > 127 && key < 256)
|
||
{
|
||
if (map[ESC].type == ISKMAP)
|
||
{
|
||
map = (Keymap)map[ESC].function;
|
||
key -= 128;
|
||
rl_dispatch (key, map);
|
||
}
|
||
else
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
switch (map[key].type)
|
||
{
|
||
case ISFUNC:
|
||
{
|
||
Function *func = map[key].function;
|
||
|
||
if (func != (Function *)NULL)
|
||
{
|
||
/* Special case rl_do_lowercase_version (). */
|
||
if (func == rl_do_lowercase_version)
|
||
{
|
||
rl_dispatch (to_lower (key), map);
|
||
return;
|
||
}
|
||
|
||
(*map[key].function)(rl_numeric_arg * arg_sign, key);
|
||
}
|
||
else
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case ISKMAP:
|
||
if (map[key].function != (Function *)NULL)
|
||
{
|
||
int newkey;
|
||
|
||
rl_key_sequence_length++;
|
||
newkey = rl_read_key ();
|
||
rl_dispatch (newkey, (Keymap)map[key].function);
|
||
}
|
||
else
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
break;
|
||
|
||
case ISMACR:
|
||
if (map[key].function != (Function *)NULL)
|
||
{
|
||
static with_macro_input ();
|
||
char *macro = savestring ((char *)map[key].function);
|
||
|
||
with_macro_input (macro);
|
||
return;
|
||
}
|
||
break;
|
||
}
|
||
|
||
/* If we have input pending, then the last command was a prefix
|
||
command. Don't change the state of rl_last_func. */
|
||
if (!rl_pending_input)
|
||
rl_last_func = map[key].function;
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Hacking Keyboard Macros */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* The currently executing macro string. If this is non-zero,
|
||
then it is a malloc ()'ed string where input is coming from. */
|
||
static char *executing_macro = (char *)NULL;
|
||
|
||
/* The offset in the above string to the next character to be read. */
|
||
static int executing_macro_index = 0;
|
||
|
||
/* The current macro string being built. Characters get stuffed
|
||
in here by add_macro_char (). */
|
||
static char *current_macro = (char *)NULL;
|
||
|
||
/* The size of the buffer allocated to current_macro. */
|
||
static int current_macro_size = 0;
|
||
|
||
/* The index at which characters are being added to current_macro. */
|
||
static int current_macro_index = 0;
|
||
|
||
/* A structure used to save nested macro strings.
|
||
It is a linked list of string/index for each saved macro. */
|
||
struct saved_macro {
|
||
struct saved_macro *next;
|
||
char *string;
|
||
int index;
|
||
};
|
||
|
||
/* The list of saved macros. */
|
||
struct saved_macro *macro_list = (struct saved_macro *)NULL;
|
||
|
||
/* Forward declarations of static functions. Thank you C. */
|
||
static void push_executing_macro (), pop_executing_macro ();
|
||
|
||
/* This one has to be declared earlier in the file. */
|
||
/* static void add_macro_char (); */
|
||
|
||
/* Set up to read subsequent input from STRING.
|
||
STRING is free ()'ed when we are done with it. */
|
||
static
|
||
with_macro_input (string)
|
||
char *string;
|
||
{
|
||
push_executing_macro ();
|
||
executing_macro = string;
|
||
executing_macro_index = 0;
|
||
}
|
||
|
||
/* Return the next character available from a macro, or 0 if
|
||
there are no macro characters. */
|
||
static int
|
||
next_macro_key ()
|
||
{
|
||
if (!executing_macro)
|
||
return (0);
|
||
|
||
if (!executing_macro[executing_macro_index])
|
||
{
|
||
pop_executing_macro ();
|
||
return (next_macro_key ());
|
||
}
|
||
|
||
return (executing_macro[executing_macro_index++]);
|
||
}
|
||
|
||
/* Save the currently executing macro on a stack of saved macros. */
|
||
static void
|
||
push_executing_macro ()
|
||
{
|
||
struct saved_macro *saver;
|
||
|
||
saver = (struct saved_macro *)xmalloc (sizeof (struct saved_macro));
|
||
saver->next = macro_list;
|
||
saver->index = executing_macro_index;
|
||
saver->string = executing_macro;
|
||
|
||
macro_list = saver;
|
||
}
|
||
|
||
/* Discard the current macro, replacing it with the one
|
||
on the top of the stack of saved macros. */
|
||
static void
|
||
pop_executing_macro ()
|
||
{
|
||
if (executing_macro)
|
||
free (executing_macro);
|
||
|
||
executing_macro = (char *)NULL;
|
||
executing_macro_index = 0;
|
||
|
||
if (macro_list)
|
||
{
|
||
struct saved_macro *disposer = macro_list;
|
||
executing_macro = macro_list->string;
|
||
executing_macro_index = macro_list->index;
|
||
macro_list = macro_list->next;
|
||
free (disposer);
|
||
}
|
||
}
|
||
|
||
/* Add a character to the macro being built. */
|
||
static void
|
||
add_macro_char (c)
|
||
int c;
|
||
{
|
||
if (current_macro_index + 1 >= current_macro_size)
|
||
{
|
||
if (!current_macro)
|
||
current_macro = (char *)xmalloc (current_macro_size = 25);
|
||
else
|
||
current_macro =
|
||
(char *)xrealloc (current_macro, current_macro_size += 25);
|
||
}
|
||
|
||
current_macro[current_macro_index++] = c;
|
||
current_macro[current_macro_index] = '\0';
|
||
}
|
||
|
||
/* Begin defining a keyboard macro.
|
||
Keystrokes are recorded as they are executed.
|
||
End the definition with rl_end_kbd_macro ().
|
||
If a numeric argument was explicitly typed, then append this
|
||
definition to the end of the existing macro, and start by
|
||
re-executing the existing macro. */
|
||
rl_start_kbd_macro (ignore1, ignore2)
|
||
int ignore1, ignore2;
|
||
{
|
||
if (defining_kbd_macro)
|
||
rl_abort ();
|
||
|
||
if (rl_explicit_arg)
|
||
{
|
||
if (current_macro)
|
||
with_macro_input (savestring (current_macro));
|
||
}
|
||
else
|
||
current_macro_index = 0;
|
||
|
||
defining_kbd_macro = 1;
|
||
}
|
||
|
||
/* Stop defining a keyboard macro.
|
||
A numeric argument says to execute the macro right now,
|
||
that many times, counting the definition as the first time. */
|
||
rl_end_kbd_macro (count, ignore)
|
||
int count, ignore;
|
||
{
|
||
if (!defining_kbd_macro)
|
||
rl_abort ();
|
||
|
||
current_macro_index -= (rl_key_sequence_length - 1);
|
||
current_macro[current_macro_index] = '\0';
|
||
|
||
defining_kbd_macro = 0;
|
||
|
||
rl_call_last_kbd_macro (--count, 0);
|
||
}
|
||
|
||
/* Execute the most recently defined keyboard macro.
|
||
COUNT says how many times to execute it. */
|
||
rl_call_last_kbd_macro (count, ignore)
|
||
int count, ignore;
|
||
{
|
||
if (!current_macro)
|
||
rl_abort ();
|
||
|
||
while (count--)
|
||
with_macro_input (savestring (current_macro));
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Initializations */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Initliaze readline (and terminal if not already). */
|
||
rl_initialize ()
|
||
{
|
||
extern char *rl_display_prompt;
|
||
|
||
/* If we have never been called before, initialize the
|
||
terminal and data structures. */
|
||
if (!rl_initialized)
|
||
{
|
||
readline_initialize_everything ();
|
||
rl_initialized++;
|
||
}
|
||
|
||
/* Initalize the current line information. */
|
||
rl_point = rl_end = 0;
|
||
the_line = rl_line_buffer;
|
||
the_line[0] = 0;
|
||
|
||
/* We aren't done yet. We haven't even gotten started yet! */
|
||
rl_done = 0;
|
||
|
||
/* Tell the history routines what is going on. */
|
||
start_using_history ();
|
||
|
||
/* Make the display buffer match the state of the line. */
|
||
{
|
||
extern char *rl_display_prompt;
|
||
extern int forced_display;
|
||
|
||
rl_on_new_line ();
|
||
|
||
rl_display_prompt = rl_prompt ? rl_prompt : "";
|
||
forced_display = 1;
|
||
}
|
||
|
||
/* No such function typed yet. */
|
||
rl_last_func = (Function *)NULL;
|
||
|
||
/* Parsing of key-bindings begins in an enabled state. */
|
||
parsing_conditionalized_out = 0;
|
||
}
|
||
|
||
/* Initialize the entire state of the world. */
|
||
readline_initialize_everything ()
|
||
{
|
||
/* Find out if we are running in Emacs. */
|
||
running_in_emacs = (char *)getenv ("EMACS");
|
||
|
||
/* Allocate data structures. */
|
||
if (!rl_line_buffer)
|
||
rl_line_buffer =
|
||
(char *)xmalloc (rl_line_buffer_len = DEFAULT_BUFFER_SIZE);
|
||
|
||
/* Initialize the terminal interface. */
|
||
init_terminal_io ((char *)NULL);
|
||
|
||
/* Bind tty characters to readline functions. */
|
||
readline_default_bindings ();
|
||
|
||
/* Initialize the function names. */
|
||
rl_initialize_funmap ();
|
||
|
||
/* Read in the init file. */
|
||
rl_read_init_file ((char *)NULL);
|
||
|
||
/* If the completion parser's default word break characters haven't
|
||
been set yet, then do so now. */
|
||
{
|
||
extern char *rl_completer_word_break_characters;
|
||
extern char *rl_basic_word_break_characters;
|
||
|
||
if (rl_completer_word_break_characters == (char *)NULL)
|
||
rl_completer_word_break_characters = rl_basic_word_break_characters;
|
||
}
|
||
}
|
||
|
||
/* If this system allows us to look at the values of the regular
|
||
input editing characters, then bind them to their readline
|
||
equivalents. */
|
||
readline_default_bindings ()
|
||
{
|
||
|
||
#ifdef NEW_TTY_DRIVER
|
||
struct sgttyb ttybuff;
|
||
int tty = fileno (rl_instream);
|
||
|
||
if (ioctl (tty, TIOCGETP, &ttybuff) != -1)
|
||
{
|
||
int erase = ttybuff.sg_erase, kill = ttybuff.sg_kill;
|
||
|
||
if (erase != -1 && keymap[erase].type == ISFUNC)
|
||
keymap[erase].function = rl_rubout;
|
||
|
||
if (kill != -1 && keymap[kill].type == ISFUNC)
|
||
keymap[kill].function = rl_unix_line_discard;
|
||
}
|
||
|
||
#ifdef TIOCGLTC
|
||
{
|
||
struct ltchars lt;
|
||
|
||
if (ioctl (tty, TIOCGLTC, <) != -1)
|
||
{
|
||
int erase = lt.t_werasc, nextc = lt.t_lnextc;
|
||
|
||
if (erase != -1 && keymap[erase].type == ISFUNC)
|
||
keymap[erase].function = rl_unix_word_rubout;
|
||
|
||
if (nextc != -1 && keymap[nextc].type == ISFUNC)
|
||
keymap[nextc].function = rl_quoted_insert;
|
||
}
|
||
}
|
||
#endif /* TIOCGLTC */
|
||
#else /* not NEW_TTY_DRIVER */
|
||
struct termio ttybuff;
|
||
int tty = fileno (rl_instream);
|
||
|
||
if (ioctl (tty, TCGETA, &ttybuff) != -1)
|
||
{
|
||
int erase = ttybuff.c_cc[VERASE];
|
||
int kill = ttybuff.c_cc[VKILL];
|
||
|
||
if (erase != -1 && keymap[(unsigned char)erase].type == ISFUNC)
|
||
keymap[(unsigned char)erase].function = rl_rubout;
|
||
|
||
if (kill != -1 && keymap[(unsigned char)kill].type == ISFUNC)
|
||
keymap[(unsigned char)kill].function = rl_unix_line_discard;
|
||
}
|
||
#endif /* NEW_TTY_DRIVER */
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Numeric Arguments */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Handle C-u style numeric args, as well as M--, and M-digits. */
|
||
|
||
/* Add the current digit to the argument in progress. */
|
||
rl_digit_argument (ignore, key)
|
||
int ignore, key;
|
||
{
|
||
rl_pending_input = key;
|
||
rl_digit_loop ();
|
||
}
|
||
|
||
/* What to do when you abort reading an argument. */
|
||
rl_discard_argument ()
|
||
{
|
||
ding ();
|
||
rl_clear_message ();
|
||
rl_init_argument ();
|
||
}
|
||
|
||
/* Create a default argument. */
|
||
rl_init_argument ()
|
||
{
|
||
rl_numeric_arg = arg_sign = 1;
|
||
rl_explicit_arg = 0;
|
||
}
|
||
|
||
/* C-u, universal argument. Multiply the current argument by 4.
|
||
Read a key. If the key has nothing to do with arguments, then
|
||
dispatch on it. If the key is the abort character then abort. */
|
||
rl_universal_argument ()
|
||
{
|
||
rl_numeric_arg *= 4;
|
||
rl_digit_loop ();
|
||
}
|
||
|
||
rl_digit_loop ()
|
||
{
|
||
int key, c;
|
||
while (1)
|
||
{
|
||
rl_message ("(arg: %d) ", arg_sign * rl_numeric_arg);
|
||
key = c = rl_read_key ();
|
||
|
||
if (keymap[c].type == ISFUNC &&
|
||
keymap[c].function == rl_universal_argument)
|
||
{
|
||
rl_numeric_arg *= 4;
|
||
continue;
|
||
}
|
||
c = UNMETA (c);
|
||
if (numeric (c))
|
||
{
|
||
if (rl_explicit_arg)
|
||
rl_numeric_arg = (rl_numeric_arg * 10) + (c - '0');
|
||
else
|
||
rl_numeric_arg = (c - '0');
|
||
rl_explicit_arg = 1;
|
||
}
|
||
else
|
||
{
|
||
if (c == '-' && !rl_explicit_arg)
|
||
{
|
||
rl_numeric_arg = 1;
|
||
arg_sign = -1;
|
||
}
|
||
else
|
||
{
|
||
rl_clear_message ();
|
||
rl_dispatch (key, keymap);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Display stuff */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* This is the stuff that is hard for me. I never seem to write good
|
||
display routines in C. Let's see how I do this time. */
|
||
|
||
/* (PWP) Well... Good for a simple line updater, but totally ignores
|
||
the problems of input lines longer than the screen width.
|
||
|
||
update_line and the code that calls it makes a multiple line,
|
||
automatically wrapping line update. Carefull attention needs
|
||
to be paid to the vertical position variables.
|
||
|
||
handling of terminals with autowrap on (incl. DEC braindamage)
|
||
could be improved a bit. Right now I just cheat and decrement
|
||
screenwidth by one. */
|
||
|
||
/* Keep two buffers; one which reflects the current contents of the
|
||
screen, and the other to draw what we think the new contents should
|
||
be. Then compare the buffers, and make whatever changes to the
|
||
screen itself that we should. Finally, make the buffer that we
|
||
just drew into be the one which reflects the current contents of the
|
||
screen, and place the cursor where it belongs.
|
||
|
||
Commands that want to can fix the display themselves, and then let
|
||
this function know that the display has been fixed by setting the
|
||
RL_DISPLAY_FIXED variable. This is good for efficiency. */
|
||
|
||
/* Termcap variables: */
|
||
extern char *term_up, *term_dc, *term_cr;
|
||
extern int screenheight, screenwidth, terminal_can_insert;
|
||
|
||
/* What YOU turn on when you have handled all redisplay yourself. */
|
||
int rl_display_fixed = 0;
|
||
|
||
/* The visible cursor position. If you print some text, adjust this. */
|
||
int last_c_pos = 0;
|
||
int last_v_pos = 0;
|
||
|
||
/* The last left edge of text that was displayed. This is used when
|
||
doing horizontal scrolling. It shifts in thirds of a screenwidth. */
|
||
static int last_lmargin = 0;
|
||
|
||
/* The line display buffers. One is the line currently displayed on
|
||
the screen. The other is the line about to be displayed. */
|
||
static char *visible_line = (char *)NULL;
|
||
static char *invisible_line = (char *)NULL;
|
||
|
||
/* Number of lines currently on screen minus 1. */
|
||
int vis_botlin = 0;
|
||
|
||
/* A buffer for `modeline' messages. */
|
||
char msg_buf[128];
|
||
|
||
/* Non-zero forces the redisplay even if we thought it was unnecessary. */
|
||
int forced_display = 0;
|
||
|
||
/* The stuff that gets printed out before the actual text of the line.
|
||
This is usually pointing to rl_prompt. */
|
||
char *rl_display_prompt = (char *)NULL;
|
||
|
||
/* Default and initial buffer size. Can grow. */
|
||
static int line_size = 1024;
|
||
|
||
/* Non-zero means to always use horizontal scrolling in line display. */
|
||
static int horizontal_scroll_mode = 0;
|
||
|
||
/* Non-zero means to display an asterisk at the starts of history lines
|
||
which have been modified. */
|
||
static int mark_modified_lines = 0;
|
||
|
||
/* I really disagree with this, but my boss (among others) insists that we
|
||
support compilers that don't work. I don't think we are gaining by doing
|
||
so; what is the advantage in producing better code if we can't use it? */
|
||
/* The following two declarations belong inside the
|
||
function block, not here. */
|
||
static void move_cursor_relative ();
|
||
static void output_some_chars ();
|
||
static void output_character_function ();
|
||
static int compare_strings ();
|
||
|
||
/* Basic redisplay algorithm. */
|
||
rl_redisplay ()
|
||
{
|
||
register int in, out, c, linenum;
|
||
register char *line = invisible_line;
|
||
int c_pos = 0;
|
||
int inv_botlin = 0; /* Number of lines in newly drawn buffer. */
|
||
|
||
extern int readline_echoing_p;
|
||
|
||
if (!readline_echoing_p)
|
||
return;
|
||
|
||
if (!rl_display_prompt)
|
||
rl_display_prompt = "";
|
||
|
||
if (!invisible_line)
|
||
{
|
||
visible_line = (char *)xmalloc (line_size);
|
||
invisible_line = (char *)xmalloc (line_size);
|
||
line = invisible_line;
|
||
for (in = 0; in < line_size; in++)
|
||
{
|
||
visible_line[in] = 0;
|
||
invisible_line[in] = 1;
|
||
}
|
||
rl_on_new_line ();
|
||
}
|
||
|
||
/* Draw the line into the buffer. */
|
||
c_pos = -1;
|
||
|
||
/* Mark the line as modified or not. We only do this for history
|
||
lines. */
|
||
out = 0;
|
||
if (mark_modified_lines && current_history () && rl_undo_list)
|
||
{
|
||
line[out++] = '*';
|
||
line[out] = '\0';
|
||
}
|
||
|
||
/* If someone thought that the redisplay was handled, but the currently
|
||
visible line has a different modification state than the one about
|
||
to become visible, then correct the callers misconception. */
|
||
if (visible_line[0] != invisible_line[0])
|
||
rl_display_fixed = 0;
|
||
|
||
strncpy (line + out, rl_display_prompt, strlen (rl_display_prompt));
|
||
out += strlen (rl_display_prompt);
|
||
line[out] = '\0';
|
||
|
||
for (in = 0; in < rl_end; in++)
|
||
{
|
||
c = the_line[in];
|
||
|
||
if (out + 1 >= line_size)
|
||
{
|
||
line_size *= 2;
|
||
visible_line = (char *)xrealloc (visible_line, line_size);
|
||
invisible_line = (char *)xrealloc (invisible_line, line_size);
|
||
line = invisible_line;
|
||
}
|
||
|
||
if (in == rl_point)
|
||
c_pos = out;
|
||
|
||
if (c > 127)
|
||
{
|
||
line[out++] = 'M';
|
||
line[out++] = '-';
|
||
line[out++] = c - 128;
|
||
}
|
||
#define DISPLAY_TABS
|
||
#ifdef DISPLAY_TABS
|
||
else if (c == '\t')
|
||
{
|
||
register int newout = (out | (int)7) + 1;
|
||
while (out < newout)
|
||
line[out++] = ' ';
|
||
}
|
||
#endif
|
||
else if (c < 32)
|
||
{
|
||
line[out++] = 'C';
|
||
line[out++] = '-';
|
||
line[out++] = c + 64;
|
||
}
|
||
else
|
||
line[out++] = c;
|
||
}
|
||
line[out] = '\0';
|
||
if (c_pos < 0)
|
||
c_pos = out;
|
||
|
||
/* PWP: now is when things get a bit hairy. The visible and invisible
|
||
line buffers are really multiple lines, which would wrap every
|
||
(screenwidth - 1) characters. Go through each in turn, finding
|
||
the changed region and updating it. The line order is top to bottom. */
|
||
|
||
/* If we can move the cursor up and down, then use multiple lines,
|
||
otherwise, let long lines display in a single terminal line, and
|
||
horizontally scroll it. */
|
||
|
||
if (!horizontal_scroll_mode && term_up && *term_up)
|
||
{
|
||
int total_screen_chars = (screenwidth * screenheight);
|
||
|
||
if (!rl_display_fixed || forced_display)
|
||
{
|
||
forced_display = 0;
|
||
|
||
/* If we have more than a screenful of material to display, then
|
||
only display a screenful. We should display the last screen,
|
||
not the first. I'll fix this in a minute. */
|
||
if (out >= total_screen_chars)
|
||
out = total_screen_chars - 1;
|
||
|
||
/* Number of screen lines to display. */
|
||
inv_botlin = out / screenwidth;
|
||
|
||
/* For each line in the buffer, do the updating display. */
|
||
for (linenum = 0; linenum <= inv_botlin; linenum++)
|
||
update_line (linenum > vis_botlin ? ""
|
||
: &visible_line[linenum * screenwidth],
|
||
&invisible_line[linenum * screenwidth],
|
||
linenum);
|
||
|
||
/* We may have deleted some lines. If so, clear the left over
|
||
blank ones at the bottom out. */
|
||
if (vis_botlin > inv_botlin)
|
||
{
|
||
char *tt;
|
||
for (; linenum <= vis_botlin; linenum++)
|
||
{
|
||
tt = &visible_line[linenum * screenwidth];
|
||
move_vert (linenum);
|
||
move_cursor_relative (0, tt);
|
||
clear_to_eol ((linenum == vis_botlin)?
|
||
strlen (tt) : screenwidth);
|
||
}
|
||
}
|
||
vis_botlin = inv_botlin;
|
||
|
||
/* Move the cursor where it should be. */
|
||
move_vert (c_pos / screenwidth);
|
||
move_cursor_relative (c_pos % screenwidth,
|
||
&invisible_line[(c_pos / screenwidth) * screenwidth]);
|
||
}
|
||
}
|
||
else /* Do horizontal scrolling. */
|
||
{
|
||
int lmargin;
|
||
|
||
/* Always at top line. */
|
||
last_v_pos = 0;
|
||
|
||
/* If the display position of the cursor would be off the edge
|
||
of the screen, start the display of this line at an offset that
|
||
leaves the cursor on the screen. */
|
||
if (c_pos - last_lmargin > screenwidth - 2)
|
||
lmargin = (c_pos / (screenwidth / 3) - 2) * (screenwidth / 3);
|
||
else if (c_pos - last_lmargin < 1)
|
||
lmargin = ((c_pos - 1) / (screenwidth / 3)) * (screenwidth / 3);
|
||
else
|
||
lmargin = last_lmargin;
|
||
|
||
/* If the first character on the screen isn't the first character
|
||
in the display line, indicate this with a special character. */
|
||
if (lmargin > 0)
|
||
line[lmargin] = '<';
|
||
|
||
if (lmargin + screenwidth < out)
|
||
line[lmargin + screenwidth - 1] = '>';
|
||
|
||
if (!rl_display_fixed || forced_display || lmargin != last_lmargin)
|
||
{
|
||
forced_display = 0;
|
||
update_line (&visible_line[last_lmargin],
|
||
&invisible_line[lmargin], 0);
|
||
|
||
move_cursor_relative (c_pos - lmargin, &invisible_line[lmargin]);
|
||
last_lmargin = lmargin;
|
||
}
|
||
}
|
||
fflush (out_stream);
|
||
|
||
/* Swap visible and non-visible lines. */
|
||
{
|
||
char *temp = visible_line;
|
||
visible_line = invisible_line;
|
||
invisible_line = temp;
|
||
rl_display_fixed = 0;
|
||
}
|
||
}
|
||
|
||
/* PWP: update_line() is based on finding the middle difference of each
|
||
line on the screen; vis:
|
||
|
||
/old first difference
|
||
/beginning of line | /old last same /old EOL
|
||
v v v v
|
||
old: eddie> Oh, my little gruntle-buggy is to me, as lurgid as
|
||
new: eddie> Oh, my little buggy says to me, as lurgid as
|
||
^ ^ ^ ^
|
||
\beginning of line | \new last same \new end of line
|
||
\new first difference
|
||
|
||
All are character pointers for the sake of speed. Special cases for
|
||
no differences, as well as for end of line additions must be handeled.
|
||
|
||
Could be made even smarter, but this works well enough */
|
||
static
|
||
update_line (old, new, current_line)
|
||
register char *old, *new;
|
||
int current_line;
|
||
{
|
||
register char *ofd, *ols, *oe, *nfd, *nls, *ne;
|
||
int lendiff, wsatend;
|
||
|
||
/* Find first difference. */
|
||
for (ofd = old, nfd = new;
|
||
(ofd - old < screenwidth) && *ofd && (*ofd == *nfd);
|
||
ofd++, nfd++)
|
||
;
|
||
|
||
/* Move to the end of the screen line. */
|
||
for (oe = ofd; ((oe - old) < screenwidth) && *oe; oe++);
|
||
for (ne = nfd; ((ne - new) < screenwidth) && *ne; ne++);
|
||
|
||
/* If no difference, continue to next line. */
|
||
if (ofd == oe && nfd == ne)
|
||
return;
|
||
|
||
wsatend = 1; /* flag for trailing whitespace */
|
||
ols = oe - 1; /* find last same */
|
||
nls = ne - 1;
|
||
while ((*ols == *nls) && (ols > ofd) && (nls > nfd))
|
||
{
|
||
if (*ols != ' ')
|
||
wsatend = 0;
|
||
ols--;
|
||
nls--;
|
||
}
|
||
|
||
if (wsatend)
|
||
{
|
||
ols = oe;
|
||
nls = ne;
|
||
}
|
||
else if (*ols != *nls)
|
||
{
|
||
if (*ols) /* don't step past the NUL */
|
||
ols++;
|
||
if (*nls)
|
||
nls++;
|
||
}
|
||
|
||
move_vert (current_line);
|
||
move_cursor_relative (ofd - old, old);
|
||
|
||
/* if (len (new) > len (old)) */
|
||
lendiff = (nls - nfd) - (ols - ofd);
|
||
|
||
/* Insert (diff(len(old),len(new)) ch */
|
||
if (lendiff > 0)
|
||
{
|
||
if (terminal_can_insert)
|
||
{
|
||
extern char *term_IC;
|
||
|
||
/* Sometimes it is cheaper to print the characters rather than
|
||
use the terminal's capabilities. */
|
||
if ((2 * (ne - nfd)) < lendiff && !term_IC)
|
||
{
|
||
output_some_chars (nfd, (ne - nfd));
|
||
last_c_pos += (ne - nfd);
|
||
}
|
||
else
|
||
{
|
||
if (*ols)
|
||
{
|
||
insert_some_chars (nfd, lendiff);
|
||
last_c_pos += lendiff;
|
||
}
|
||
else
|
||
{
|
||
/* At the end of a line the characters do not have to
|
||
be "inserted". They can just be placed on the screen. */
|
||
output_some_chars (nfd, lendiff);
|
||
last_c_pos += lendiff;
|
||
}
|
||
/* Copy (new) chars to screen from first diff to last match. */
|
||
if (((nls - nfd) - lendiff) > 0)
|
||
{
|
||
output_some_chars (&nfd[lendiff], ((nls - nfd) - lendiff));
|
||
last_c_pos += ((nls - nfd) - lendiff);
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{ /* cannot insert chars, write to EOL */
|
||
output_some_chars (nfd, (ne - nfd));
|
||
last_c_pos += (ne - nfd);
|
||
}
|
||
}
|
||
else /* Delete characters from line. */
|
||
{
|
||
/* If possible and inexpensive to use terminal deletion, then do so. */
|
||
if (term_dc && (2 * (ne - nfd)) >= (-lendiff))
|
||
{
|
||
if (lendiff)
|
||
delete_chars (-lendiff); /* delete (diff) characters */
|
||
|
||
/* Copy (new) chars to screen from first diff to last match */
|
||
if ((nls - nfd) > 0)
|
||
{
|
||
output_some_chars (nfd, (nls - nfd));
|
||
last_c_pos += (nls - nfd);
|
||
}
|
||
}
|
||
/* Otherwise, print over the existing material. */
|
||
else
|
||
{
|
||
output_some_chars (nfd, (ne - nfd));
|
||
last_c_pos += (ne - nfd);
|
||
clear_to_eol ((oe - old) - (ne - new));
|
||
}
|
||
}
|
||
}
|
||
|
||
/* (PWP) tell the update routines that we have moved onto a
|
||
new (empty) line. */
|
||
rl_on_new_line ()
|
||
{
|
||
if (visible_line)
|
||
visible_line[0] = '\0';
|
||
|
||
last_c_pos = last_v_pos = 0;
|
||
vis_botlin = last_lmargin = 0;
|
||
}
|
||
|
||
/* Actually update the display, period. */
|
||
rl_forced_update_display ()
|
||
{
|
||
if (visible_line)
|
||
{
|
||
register char *temp = visible_line;
|
||
|
||
while (*temp) *temp++ = '\0';
|
||
}
|
||
rl_on_new_line ();
|
||
forced_display++;
|
||
rl_redisplay ();
|
||
}
|
||
|
||
/* Move the cursor from last_c_pos to NEW, which are buffer indices.
|
||
DATA is the contents of the screen line of interest; i.e., where
|
||
the movement is being done. */
|
||
static void
|
||
move_cursor_relative (new, data)
|
||
int new;
|
||
char *data;
|
||
{
|
||
register int i;
|
||
|
||
/* It may be faster to output a CR, and then move forwards instead
|
||
of moving backwards. */
|
||
if (new + 1 < last_c_pos - new)
|
||
{
|
||
tputs (term_cr, 1, output_character_function);
|
||
last_c_pos = 0;
|
||
}
|
||
|
||
if (last_c_pos == new) return;
|
||
|
||
if (last_c_pos < new)
|
||
{
|
||
/* Move the cursor forward. We do it by printing the command
|
||
to move the cursor forward if there is one, else print that
|
||
portion of the output buffer again. Which is cheaper? */
|
||
|
||
/* The above comment is left here for posterity. It is faster
|
||
to print one character (non-control) than to print a control
|
||
sequence telling the terminal to move forward one character.
|
||
That kind of control is for people who don't know what the
|
||
data is underneath the cursor. */
|
||
#ifdef HACK_TERMCAP_MOTION
|
||
extern char *term_forward_char;
|
||
|
||
if (term_forward_char)
|
||
for (i = last_c_pos; i < new; i++)
|
||
tputs (term_forward_char, 1, output_character_function);
|
||
else
|
||
for (i = last_c_pos; i < new; i++)
|
||
putc (data[i], out_stream);
|
||
#else
|
||
for (i = last_c_pos; i < new; i++)
|
||
putc (data[i], out_stream);
|
||
#endif /* HACK_TERMCAP_MOTION */
|
||
}
|
||
else
|
||
backspace (last_c_pos - new);
|
||
last_c_pos = new;
|
||
}
|
||
|
||
/* PWP: move the cursor up or down. */
|
||
move_vert (to)
|
||
int to;
|
||
{
|
||
void output_character_function ();
|
||
register int delta, i;
|
||
|
||
if (last_v_pos == to) return;
|
||
|
||
if (to > screenheight)
|
||
return;
|
||
|
||
if ((delta = to - last_v_pos) > 0)
|
||
{
|
||
for (i = 0; i < delta; i++)
|
||
putc ('\n', out_stream);
|
||
tputs (term_cr, 1, output_character_function);
|
||
last_c_pos = 0; /* because crlf() will do \r\n */
|
||
}
|
||
else
|
||
{ /* delta < 0 */
|
||
if (term_up && *term_up)
|
||
for (i = 0; i < -delta; i++)
|
||
tputs (term_up, 1, output_character_function);
|
||
}
|
||
last_v_pos = to; /* now to is here */
|
||
}
|
||
|
||
/* Physically print C on out_stream. This is for functions which know
|
||
how to optimize the display. */
|
||
rl_show_char (c)
|
||
int c;
|
||
{
|
||
if (c > 127)
|
||
{
|
||
fprintf (out_stream, "M-");
|
||
c -= 128;
|
||
}
|
||
|
||
#ifdef DISPLAY_TABS
|
||
if (c < 32 && c != '\t')
|
||
#else
|
||
if (c < 32)
|
||
#endif
|
||
{
|
||
|
||
c += 64;
|
||
}
|
||
|
||
putc (c, out_stream);
|
||
fflush (out_stream);
|
||
}
|
||
|
||
#ifdef DISPLAY_TABS
|
||
int
|
||
rl_character_len (c, pos)
|
||
register int c, pos;
|
||
{
|
||
if (c < ' ' || c > 126)
|
||
{
|
||
if (c == '\t')
|
||
return (((pos | (int)7) + 1) - pos);
|
||
else
|
||
return (3);
|
||
}
|
||
else
|
||
return (1);
|
||
}
|
||
#else
|
||
int
|
||
rl_character_len (c)
|
||
int c;
|
||
{
|
||
if (c < ' ' || c > 126)
|
||
return (3);
|
||
else
|
||
return (1);
|
||
}
|
||
#endif /* DISPLAY_TAB */
|
||
|
||
/* How to print things in the "echo-area". The prompt is treated as a
|
||
mini-modeline. */
|
||
rl_message (string, arg1, arg2)
|
||
char *string;
|
||
{
|
||
sprintf (msg_buf, string, arg1, arg2);
|
||
rl_display_prompt = msg_buf;
|
||
rl_redisplay ();
|
||
}
|
||
|
||
/* How to clear things from the "echo-area". */
|
||
rl_clear_message ()
|
||
{
|
||
rl_display_prompt = rl_prompt;
|
||
rl_redisplay ();
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Terminal and Termcap */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
static char *term_buffer = (char *)NULL;
|
||
static char *term_string_buffer = (char *)NULL;
|
||
|
||
/* Non-zero means this terminal can't really do anything. */
|
||
int dumb_term = 0;
|
||
|
||
char PC;
|
||
char *BC, *UP;
|
||
|
||
/* Some strings to control terminal actions. These are output by tputs (). */
|
||
char *term_goto, *term_clreol, *term_cr, *term_clrpag, *term_backspace;
|
||
|
||
int screenwidth, screenheight;
|
||
|
||
/* Non-zero if we determine that the terminal can do character insertion. */
|
||
int terminal_can_insert = 0;
|
||
|
||
/* How to insert characters. */
|
||
char *term_im, *term_ei, *term_ic, *term_ip, *term_IC;
|
||
|
||
/* How to delete characters. */
|
||
char *term_dc, *term_DC;
|
||
|
||
#ifdef HACK_TERMCAP_MOTION
|
||
char *term_forward_char;
|
||
#endif /* HACK_TERMCAP_MOTION */
|
||
|
||
/* How to go up a line. */
|
||
char *term_up;
|
||
|
||
/* Re-initialize the terminal considering that the TERM/TERMCAP variable
|
||
has changed. */
|
||
rl_reset_terminal (terminal_name)
|
||
char *terminal_name;
|
||
{
|
||
init_terminal_io (terminal_name);
|
||
}
|
||
|
||
init_terminal_io (terminal_name)
|
||
char *terminal_name;
|
||
{
|
||
char *term = (terminal_name? terminal_name : (char *)getenv ("TERM"));
|
||
char *tgetstr (), *buffer;
|
||
|
||
|
||
if (!term_string_buffer)
|
||
term_string_buffer = (char *)xmalloc (2048);
|
||
|
||
if (!term_buffer)
|
||
term_buffer = (char *)xmalloc (2048);
|
||
|
||
buffer = term_string_buffer;
|
||
|
||
term_clrpag = term_cr = term_clreol = (char *)NULL;
|
||
|
||
if (!term)
|
||
term = "dumb";
|
||
|
||
if (tgetent (term_buffer, term) < 0)
|
||
{
|
||
dumb_term = 1;
|
||
return;
|
||
}
|
||
|
||
BC = tgetstr ("pc", &buffer);
|
||
PC = buffer ? *buffer : 0;
|
||
|
||
term_backspace = tgetstr ("le", &buffer);
|
||
|
||
term_cr = tgetstr ("cr", &buffer);
|
||
term_clreol = tgetstr ("ce", &buffer);
|
||
term_clrpag = tgetstr ("cl", &buffer);
|
||
|
||
if (!term_cr)
|
||
term_cr = "\r";
|
||
|
||
#ifdef HACK_TERMCAP_MOTION
|
||
term_forward_char = tgetstr ("nd", &buffer);
|
||
#endif /* HACK_TERMCAP_MOTION */
|
||
|
||
screenwidth = tgetnum ("co");
|
||
if (screenwidth <= 0)
|
||
screenwidth = 80;
|
||
screenwidth--; /* PWP: avoid autowrap bugs */
|
||
|
||
screenheight = tgetnum ("li");
|
||
if (screenheight <= 0)
|
||
screenheight = 24;
|
||
|
||
term_im = tgetstr ("im", &buffer);
|
||
term_ei = tgetstr ("ei", &buffer);
|
||
term_IC = tgetstr ("IC", &buffer);
|
||
term_ic = tgetstr ("ic", &buffer);
|
||
|
||
/* "An application program can assume that the terminal can do
|
||
character insertion if *any one of* the capabilities `IC',
|
||
`im', `ic' or `ip' is provided." But we can't do anything if
|
||
only `ip' is provided, so... */
|
||
terminal_can_insert = (term_IC || term_im || term_ic);
|
||
|
||
term_up = tgetstr ("up", &buffer);
|
||
term_dc = tgetstr ("dc", &buffer);
|
||
term_DC = tgetstr ("DC", &buffer);
|
||
}
|
||
|
||
/* A function for the use of tputs () */
|
||
static void
|
||
output_character_function (c)
|
||
int c;
|
||
{
|
||
putc (c, out_stream);
|
||
}
|
||
|
||
/* Write COUNT characters from STRING to the output stream. */
|
||
static void
|
||
output_some_chars (string, count)
|
||
char *string;
|
||
int count;
|
||
{
|
||
fwrite (string, 1, count, out_stream);
|
||
}
|
||
|
||
|
||
/* Delete COUNT characters from the display line. */
|
||
static
|
||
delete_chars (count)
|
||
int count;
|
||
{
|
||
if (count > screenwidth)
|
||
return;
|
||
|
||
if (term_DC && *term_DC)
|
||
{
|
||
char *tgoto (), *buffer;
|
||
buffer = tgoto (term_DC, 0, count);
|
||
tputs (buffer, 1, output_character_function);
|
||
}
|
||
else
|
||
{
|
||
if (term_dc && *term_dc)
|
||
while (count--)
|
||
tputs (term_dc, 1, output_character_function);
|
||
}
|
||
}
|
||
|
||
/* Insert COUNT character from STRING to the output stream. */
|
||
static
|
||
insert_some_chars (string, count)
|
||
char *string;
|
||
int count;
|
||
{
|
||
/* If IC is defined, then we do not have to "enter" insert mode. */
|
||
if (term_IC)
|
||
{
|
||
char *tgoto (), *buffer;
|
||
buffer = tgoto (term_IC, 0, count);
|
||
tputs (buffer, 1, output_character_function);
|
||
output_some_chars (string, count);
|
||
}
|
||
else
|
||
{
|
||
register int i;
|
||
|
||
/* If we have to turn on insert-mode, then do so. */
|
||
if (term_im && *term_im)
|
||
tputs (term_im, 1, output_character_function);
|
||
|
||
/* If there is a special command for inserting characters, then
|
||
use that first to open up the space. */
|
||
if (term_ic && *term_ic)
|
||
{
|
||
for (i = count; i--; )
|
||
tputs (term_ic, 1, output_character_function);
|
||
}
|
||
|
||
/* Print the text. */
|
||
output_some_chars (string, count);
|
||
|
||
/* If there is a string to turn off insert mode, we had best use
|
||
it now. */
|
||
if (term_ei && *term_ei)
|
||
tputs (term_ei, 1, output_character_function);
|
||
}
|
||
}
|
||
|
||
/* Move the cursor back. */
|
||
backspace (count)
|
||
int count;
|
||
{
|
||
register int i;
|
||
|
||
if (term_backspace)
|
||
for (i = 0; i < count; i++)
|
||
tputs (term_backspace, 1, output_character_function);
|
||
else
|
||
for (i = 0; i < count; i++)
|
||
putc ('\b', out_stream);
|
||
}
|
||
|
||
/* Move to the start of the next line. */
|
||
crlf ()
|
||
{
|
||
tputs (term_cr, 1, output_character_function);
|
||
putc ('\n', out_stream);
|
||
}
|
||
|
||
/* Clear to the end of the line. COUNT is the minimum
|
||
number of character spaces to clear, */
|
||
clear_to_eol (count)
|
||
int count;
|
||
{
|
||
if (term_clreol)
|
||
{
|
||
tputs (term_clreol, 1, output_character_function);
|
||
}
|
||
else
|
||
{
|
||
register int i;
|
||
|
||
/* Do one more character space. */
|
||
count++;
|
||
|
||
for (i = 0; i < count; i++)
|
||
putc (' ', out_stream);
|
||
|
||
backspace (count);
|
||
}
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Saving and Restoring the TTY */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Non-zero means that the terminal is in a prepped state. */
|
||
static int terminal_prepped = 0;
|
||
|
||
#ifdef NEW_TTY_DRIVER
|
||
|
||
/* Standard flags, including ECHO. */
|
||
static int original_tty_flags = 0;
|
||
|
||
/* Local mode flags, like LPASS8. */
|
||
static int local_mode_flags = 0;
|
||
|
||
/* Terminal characters. This has C-s and C-q in it. */
|
||
static struct tchars original_tchars;
|
||
|
||
/* Local special characters. This has the interrupt characters in it. */
|
||
static struct ltchars original_ltchars;
|
||
|
||
/* We use this to get and set the tty_flags. */
|
||
static struct sgttyb the_ttybuff;
|
||
|
||
/* Put the terminal in CBREAK mode so that we can detect key presses. */
|
||
static
|
||
rl_prep_terminal ()
|
||
{
|
||
int tty = fileno (rl_instream);
|
||
int oldmask = sigblock (sigmask (SIGINT));
|
||
|
||
if (!terminal_prepped)
|
||
{
|
||
/* We always get the latest tty values. Maybe stty changed them. */
|
||
ioctl (tty, TIOCGETP, &the_ttybuff);
|
||
original_tty_flags = the_ttybuff.sg_flags;
|
||
|
||
readline_echoing_p = (original_tty_flags & ECHO);
|
||
|
||
|
||
#if defined (TIOCLGET)
|
||
ioctl (tty, TIOCLGET, &local_mode_flags);
|
||
#endif
|
||
|
||
/* If this terminal doesn't care how the 8th bit is used,
|
||
then we can use it for the meta-key.
|
||
We check by seeing if BOTH odd and even parity are allowed. */
|
||
if ((the_ttybuff.sg_flags & ODDP) && (the_ttybuff.sg_flags & EVENP))
|
||
{
|
||
#ifdef PASS8
|
||
the_ttybuff.sg_flags |= PASS8;
|
||
#endif
|
||
/* Hack on local mode flags if we can. */
|
||
#if defined (TIOCLGET) && defined (LPASS8)
|
||
{
|
||
int flags;
|
||
flags = local_mode_flags | LPASS8;
|
||
ioctl (tty, TIOCLSET, &flags);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
#ifdef TIOCGETC
|
||
{
|
||
struct tchars temp;
|
||
|
||
ioctl (tty, TIOCGETC, &original_tchars);
|
||
bcopy (&original_tchars, &temp, sizeof (struct tchars));
|
||
|
||
/* Get rid of C-s and C-q.
|
||
We remember the value of startc (C-q) so that if the terminal is in
|
||
xoff state, the user can xon it by pressing that character. */
|
||
xon_char = temp.t_startc;
|
||
temp.t_stopc = -1;
|
||
temp.t_startc = -1;
|
||
|
||
/* If there is an XON character, bind it to restart the output. */
|
||
if (xon_char != -1)
|
||
rl_bind_key (xon_char, rl_restart_output);
|
||
|
||
/* If there is an EOF char, bind eof_char to it. */
|
||
if (temp.t_eofc != -1)
|
||
eof_char = temp.t_eofc;
|
||
|
||
#ifdef NEVER
|
||
/* Get rid of C-\ and C-c. */
|
||
temp.t_intrc = temp.t_quitc = -1;
|
||
#endif
|
||
|
||
ioctl (tty, TIOCSETC, &temp);
|
||
}
|
||
#endif /* TIOCGETC */
|
||
|
||
#ifdef TIOCGLTC
|
||
{
|
||
struct ltchars temp;
|
||
|
||
ioctl (tty, TIOCGLTC, &original_ltchars);
|
||
bcopy (&original_ltchars, &temp, sizeof (struct ltchars));
|
||
|
||
/* Make the interrupt keys go away. Just enough to make people happy. */
|
||
temp.t_dsuspc = -1; /* C-y */
|
||
temp.t_lnextc = -1; /* C-v */
|
||
|
||
ioctl (tty, TIOCSLTC, &temp);
|
||
}
|
||
#endif /* TIOCGLTC */
|
||
|
||
the_ttybuff.sg_flags &= ~ECHO;
|
||
the_ttybuff.sg_flags |= CBREAK;
|
||
ioctl (tty, TIOCSETN, &the_ttybuff);
|
||
|
||
terminal_prepped = 1;
|
||
}
|
||
sigsetmask (oldmask);
|
||
}
|
||
|
||
/* Restore the terminal to its original state. */
|
||
static
|
||
rl_deprep_terminal ()
|
||
{
|
||
int tty = fileno (rl_instream);
|
||
int oldmask = sigblock (sigmask (SIGINT));
|
||
|
||
if (terminal_prepped)
|
||
{
|
||
the_ttybuff.sg_flags = original_tty_flags;
|
||
ioctl (tty, TIOCSETN, &the_ttybuff);
|
||
readline_echoing_p = 1;
|
||
|
||
#if defined (TIOCLGET)
|
||
ioctl (tty, TIOCLSET, &local_mode_flags);
|
||
#endif
|
||
|
||
#ifdef TIOCSLTC
|
||
ioctl (tty, TIOCSLTC, &original_ltchars);
|
||
#endif
|
||
|
||
#ifdef TIOCSETC
|
||
ioctl (tty, TIOCSETC, &original_tchars);
|
||
#endif
|
||
terminal_prepped = 0;
|
||
}
|
||
|
||
sigsetmask (oldmask);
|
||
}
|
||
|
||
#else /* !defined (NEW_TTY_DRIVER) */
|
||
|
||
#if !defined (VMIN)
|
||
#define VMIN VEOF
|
||
#endif
|
||
|
||
#if !defined (VTIME)
|
||
#define VTIME VEOL
|
||
#endif
|
||
|
||
static struct termio otio;
|
||
|
||
static
|
||
rl_prep_terminal ()
|
||
{
|
||
int tty = fileno (rl_instream);
|
||
struct termio tio;
|
||
|
||
ioctl (tty, TCGETA, &tio);
|
||
ioctl (tty, TCGETA, &otio);
|
||
|
||
readline_echoing_p = (tio.c_lflag & ECHO);
|
||
|
||
tio.c_lflag &= ~(ICANON|ECHO);
|
||
tio.c_iflag &= ~(IXON|IXOFF|IXANY|ISTRIP|INPCK);
|
||
|
||
#if !defined (HANDLE_SIGNALS)
|
||
tio.c_lflag &= ~ISIG;
|
||
#endif
|
||
|
||
tio.c_cc[VMIN] = 1;
|
||
tio.c_cc[VTIME] = 0;
|
||
ioctl (tty, TCSETAW, &tio);
|
||
ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */
|
||
}
|
||
|
||
static
|
||
rl_deprep_terminal ()
|
||
{
|
||
int tty = fileno (rl_instream);
|
||
ioctl (tty, TCSETAW, &otio);
|
||
ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */
|
||
}
|
||
#endif /* NEW_TTY_DRIVER */
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Utility Functions */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Return 0 if C is not a member of the class of characters that belong
|
||
in words, or 1 if it is. */
|
||
|
||
int allow_pathname_alphabetic_chars = 0;
|
||
char *pathname_alphabetic_chars = "/-_=~.#$";
|
||
|
||
int
|
||
alphabetic (c)
|
||
int c;
|
||
{
|
||
char *rindex ();
|
||
if (pure_alphabetic (c) || (numeric (c)))
|
||
return (1);
|
||
|
||
if (allow_pathname_alphabetic_chars)
|
||
return ((int)rindex (pathname_alphabetic_chars, c));
|
||
else
|
||
return (0);
|
||
}
|
||
|
||
/* Return non-zero if C is a numeric character. */
|
||
int
|
||
numeric (c)
|
||
int c;
|
||
{
|
||
return (c >= '0' && c <= '9');
|
||
}
|
||
|
||
/* Ring the terminal bell. */
|
||
int
|
||
ding ()
|
||
{
|
||
if (readline_echoing_p)
|
||
{
|
||
fprintf (stderr, "\007");
|
||
fflush (stderr);
|
||
}
|
||
return (-1);
|
||
}
|
||
|
||
/* How to abort things. */
|
||
rl_abort ()
|
||
{
|
||
ding ();
|
||
rl_clear_message ();
|
||
rl_init_argument ();
|
||
rl_pending_input = 0;
|
||
|
||
defining_kbd_macro = 0;
|
||
while (executing_macro)
|
||
pop_executing_macro ();
|
||
|
||
longjmp (readline_top_level, 1);
|
||
}
|
||
|
||
/* Return a copy of the string between FROM and TO.
|
||
FROM is inclusive, TO is not. */
|
||
static char *
|
||
rl_copy (from, to)
|
||
int from, to;
|
||
{
|
||
register int length;
|
||
char *copy;
|
||
|
||
/* Fix it if the caller is confused. */
|
||
if (from > to) {
|
||
int t = from;
|
||
from = to;
|
||
to = t;
|
||
}
|
||
|
||
length = to - from;
|
||
copy = (char *)xmalloc (1 + length);
|
||
strncpy (copy, the_line + from, length);
|
||
copy[length] = '\0';
|
||
return (copy);
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Insert and Delete */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
|
||
/* Insert a string of text into the line at point. This is the only
|
||
way that you should do insertion. rl_insert () calls this
|
||
function. */
|
||
rl_insert_text (string)
|
||
char *string;
|
||
{
|
||
extern int doing_an_undo;
|
||
register int i, l = strlen (string);
|
||
while (rl_end + l >= rl_line_buffer_len)
|
||
{
|
||
rl_line_buffer =
|
||
(char *)xrealloc (rl_line_buffer,
|
||
rl_line_buffer_len += DEFAULT_BUFFER_SIZE);
|
||
the_line = rl_line_buffer;
|
||
}
|
||
|
||
for (i = rl_end; i >= rl_point; i--)
|
||
the_line[i + l] = the_line[i];
|
||
strncpy (the_line + rl_point, string, l);
|
||
|
||
/* Remember how to undo this if we aren't undoing something. */
|
||
if (!doing_an_undo)
|
||
{
|
||
/* If possible and desirable, concatenate the undos. */
|
||
if ((strlen (string) == 1) &&
|
||
rl_undo_list &&
|
||
(rl_undo_list->what == UNDO_INSERT) &&
|
||
(rl_undo_list->end == rl_point) &&
|
||
(rl_undo_list->end - rl_undo_list->start < 20))
|
||
rl_undo_list->end++;
|
||
else
|
||
rl_add_undo (UNDO_INSERT, rl_point, rl_point + l, (char *)NULL);
|
||
}
|
||
rl_point += l;
|
||
rl_end += l;
|
||
the_line[rl_end] = '\0';
|
||
}
|
||
|
||
/* Delete the string between FROM and TO. FROM is
|
||
inclusive, TO is not. */
|
||
rl_delete_text (from, to)
|
||
int from, to;
|
||
{
|
||
extern int doing_an_undo;
|
||
register char *text;
|
||
|
||
/* Fix it if the caller is confused. */
|
||
if (from > to) {
|
||
int t = from;
|
||
from = to;
|
||
to = t;
|
||
}
|
||
text = rl_copy (from, to);
|
||
strncpy (the_line + from, the_line + to, rl_end - to);
|
||
|
||
/* Remember how to undo this delete. */
|
||
if (!doing_an_undo)
|
||
rl_add_undo (UNDO_DELETE, from, to, text);
|
||
else
|
||
free (text);
|
||
|
||
rl_end -= (to - from);
|
||
the_line[rl_end] = '\0';
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Readline character functions */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* This is not a gap editor, just a stupid line input routine. No hair
|
||
is involved in writing any of the functions, and none should be. */
|
||
|
||
/* Note that:
|
||
|
||
rl_end is the place in the string that we would place '\0';
|
||
i.e., it is always safe to place '\0' there.
|
||
|
||
rl_point is the place in the string where the cursor is. Sometimes
|
||
this is the same as rl_end.
|
||
|
||
Any command that is called interactively receives two arguments.
|
||
The first is a count: the numeric arg pased to this command.
|
||
The second is the key which invoked this command.
|
||
*/
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Movement Commands */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Note that if you `optimize' the display for these functions, you cannot
|
||
use said functions in other functions which do not do optimizing display.
|
||
I.e., you will have to update the data base for rl_redisplay, and you
|
||
might as well let rl_redisplay do that job. */
|
||
|
||
/* Move forward COUNT characters. */
|
||
rl_forward (count)
|
||
int count;
|
||
{
|
||
if (count < 0)
|
||
rl_backward (-count);
|
||
else
|
||
while (count)
|
||
{
|
||
#ifdef VI_MODE
|
||
if (rl_point == (rl_end - (rl_editing_mode == vi_mode)))
|
||
#else
|
||
if (rl_point == rl_end)
|
||
#endif
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
else
|
||
rl_point++;
|
||
--count;
|
||
}
|
||
}
|
||
|
||
/* Move backward COUNT characters. */
|
||
rl_backward (count)
|
||
int count;
|
||
{
|
||
if (count < 0)
|
||
rl_forward (-count);
|
||
else
|
||
while (count)
|
||
{
|
||
if (!rl_point)
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
else
|
||
--rl_point;
|
||
--count;
|
||
}
|
||
}
|
||
|
||
/* Move to the beginning of the line. */
|
||
rl_beg_of_line ()
|
||
{
|
||
rl_point = 0;
|
||
}
|
||
|
||
/* Move to the end of the line. */
|
||
rl_end_of_line ()
|
||
{
|
||
rl_point = rl_end;
|
||
}
|
||
|
||
/* Move forward a word. We do what Emacs does. */
|
||
rl_forward_word (count)
|
||
int count;
|
||
{
|
||
int c;
|
||
|
||
if (count < 0)
|
||
{
|
||
rl_backward_word (-count);
|
||
return;
|
||
}
|
||
|
||
while (count)
|
||
{
|
||
if (rl_point == rl_end)
|
||
return;
|
||
|
||
/* If we are not in a word, move forward until we are in one.
|
||
Then, move forward until we hit a non-alphabetic character. */
|
||
c = the_line[rl_point];
|
||
if (!alphabetic (c))
|
||
{
|
||
while (++rl_point < rl_end)
|
||
{
|
||
c = the_line[rl_point];
|
||
if (alphabetic (c)) break;
|
||
}
|
||
}
|
||
if (rl_point == rl_end) return;
|
||
while (++rl_point < rl_end)
|
||
{
|
||
c = the_line[rl_point];
|
||
if (!alphabetic (c)) break;
|
||
}
|
||
--count;
|
||
}
|
||
}
|
||
|
||
/* Move backward a word. We do what Emacs does. */
|
||
rl_backward_word (count)
|
||
int count;
|
||
{
|
||
int c;
|
||
|
||
if (count < 0)
|
||
{
|
||
rl_forward_word (-count);
|
||
return;
|
||
}
|
||
|
||
while (count)
|
||
{
|
||
if (!rl_point)
|
||
return;
|
||
|
||
/* Like rl_forward_word (), except that we look at the characters
|
||
just before point. */
|
||
|
||
c = the_line[rl_point - 1];
|
||
if (!alphabetic (c))
|
||
{
|
||
while (--rl_point)
|
||
{
|
||
c = the_line[rl_point - 1];
|
||
if (alphabetic (c)) break;
|
||
}
|
||
}
|
||
|
||
while (rl_point)
|
||
{
|
||
c = the_line[rl_point - 1];
|
||
if (!alphabetic (c))
|
||
break;
|
||
else --rl_point;
|
||
}
|
||
--count;
|
||
}
|
||
}
|
||
|
||
/* Clear the current line. Numeric argument to C-l does this. */
|
||
rl_refresh_line ()
|
||
{
|
||
int curr_line = last_c_pos / screenwidth;
|
||
extern char *term_clreol;
|
||
|
||
move_vert(curr_line);
|
||
move_cursor_relative (0, the_line); /* XXX is this right */
|
||
|
||
if (term_clreol)
|
||
tputs (term_clreol, 1, output_character_function);
|
||
|
||
rl_forced_update_display ();
|
||
rl_display_fixed = 1;
|
||
}
|
||
|
||
/* C-l typed to a line without quoting clears the screen, and then reprints
|
||
the prompt and the current input line. Given a numeric arg, redraw only
|
||
the current line. */
|
||
rl_clear_screen ()
|
||
{
|
||
extern char *term_clrpag;
|
||
|
||
if (rl_explicit_arg)
|
||
{
|
||
rl_refresh_line ();
|
||
return;
|
||
}
|
||
|
||
if (term_clrpag)
|
||
tputs (term_clrpag, 1, output_character_function);
|
||
else
|
||
crlf ();
|
||
|
||
rl_forced_update_display ();
|
||
rl_display_fixed = 1;
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Text commands */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Insert the character C at the current location, moving point forward. */
|
||
rl_insert (count, c)
|
||
int count, c;
|
||
{
|
||
register int i;
|
||
char *string;
|
||
|
||
if (count <= 0)
|
||
return;
|
||
|
||
/* If we can optimize, then do it. But don't let people crash
|
||
readline because of extra large arguments. */
|
||
if (count > 1 && count < 1024)
|
||
{
|
||
string = (char *)alloca (1 + count);
|
||
|
||
for (i = 0; i < count; i++)
|
||
string[i] = c;
|
||
|
||
string[i] = '\0';
|
||
rl_insert_text (string);
|
||
return;
|
||
}
|
||
|
||
if (count > 1024)
|
||
{
|
||
int decreaser;
|
||
|
||
string = (char *)alloca (1024 + 1);
|
||
|
||
for (i = 0; i < 1024; i++)
|
||
string[i] = c;
|
||
|
||
while (count)
|
||
{
|
||
decreaser = (count > 1024 ? 1024 : count);
|
||
string[decreaser] = '\0';
|
||
rl_insert_text (string);
|
||
count -= decreaser;
|
||
}
|
||
return;
|
||
}
|
||
|
||
/* We are inserting a single character.
|
||
If there is pending input, then make a string of all of the
|
||
pending characters that are bound to rl_insert, and insert
|
||
them all. */
|
||
if (any_typein)
|
||
{
|
||
int key = 0, t;
|
||
|
||
i = 0;
|
||
string = (char *)alloca (ibuffer_len + 1);
|
||
string[i++] = c;
|
||
|
||
while ((t = rl_get_char (&key)) &&
|
||
(keymap[key].type == ISFUNC &&
|
||
keymap[key].function == rl_insert))
|
||
string[i++] = key;
|
||
|
||
if (t)
|
||
rl_unget_char (key);
|
||
|
||
string[i] = '\0';
|
||
rl_insert_text (string);
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
/* Inserting a single character. */
|
||
string = (char *)alloca (2);
|
||
|
||
string[1] = '\0';
|
||
string[0] = c;
|
||
rl_insert_text (string);
|
||
}
|
||
}
|
||
|
||
/* Insert the next typed character verbatim. */
|
||
rl_quoted_insert (count)
|
||
int count;
|
||
{
|
||
int c = rl_read_key ();
|
||
rl_insert (count, c);
|
||
}
|
||
|
||
/* Insert a tab character. */
|
||
rl_tab_insert (count)
|
||
int count;
|
||
{
|
||
rl_insert (count, '\t');
|
||
}
|
||
|
||
/* What to do when a NEWLINE is pressed. We accept the whole line.
|
||
KEY is the key that invoked this command. I guess it could have
|
||
meaning in the future. */
|
||
rl_newline (count, key)
|
||
int count, key;
|
||
{
|
||
|
||
rl_done = 1;
|
||
|
||
#ifdef VI_MODE
|
||
{
|
||
extern int vi_doing_insert;
|
||
if (vi_doing_insert)
|
||
{
|
||
rl_end_undo_group ();
|
||
vi_doing_insert = 0;
|
||
}
|
||
}
|
||
#endif /* VI_MODE */
|
||
|
||
if (readline_echoing_p)
|
||
{
|
||
move_vert (vis_botlin);
|
||
vis_botlin = 0;
|
||
crlf ();
|
||
fflush (out_stream);
|
||
rl_display_fixed++;
|
||
}
|
||
}
|
||
|
||
rl_clean_up_for_exit ()
|
||
{
|
||
if (readline_echoing_p)
|
||
{
|
||
move_vert (vis_botlin);
|
||
vis_botlin = 0;
|
||
fflush (out_stream);
|
||
rl_restart_output ();
|
||
}
|
||
}
|
||
|
||
/* What to do for some uppercase characters, like meta characters,
|
||
and some characters appearing in emacs_ctlx_keymap. This function
|
||
is just a stub, you bind keys to it and the code in rl_dispatch ()
|
||
is special cased. */
|
||
rl_do_lowercase_version (ignore1, ignore2)
|
||
int ignore1, ignore2;
|
||
{
|
||
}
|
||
|
||
/* Rubout the character behind point. */
|
||
rl_rubout (count)
|
||
int count;
|
||
{
|
||
if (count < 0)
|
||
{
|
||
rl_delete (-count);
|
||
return;
|
||
}
|
||
|
||
if (!rl_point)
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
if (count > 1)
|
||
{
|
||
int orig_point = rl_point;
|
||
rl_backward (count);
|
||
rl_kill_text (orig_point, rl_point);
|
||
}
|
||
else
|
||
{
|
||
int c = the_line[--rl_point];
|
||
rl_delete_text (rl_point, rl_point + 1);
|
||
|
||
if (rl_point == rl_end && alphabetic (c) && last_c_pos)
|
||
{
|
||
backspace (1);
|
||
putc (' ', out_stream);
|
||
backspace (1);
|
||
last_c_pos--;
|
||
visible_line[last_c_pos] = '\0';
|
||
rl_display_fixed++;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Delete the character under the cursor. Given a numeric argument,
|
||
kill that many characters instead. */
|
||
rl_delete (count, invoking_key)
|
||
int count, invoking_key;
|
||
{
|
||
if (count < 0)
|
||
{
|
||
rl_rubout (-count);
|
||
return;
|
||
}
|
||
|
||
if (rl_point == rl_end)
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
if (count > 1)
|
||
{
|
||
int orig_point = rl_point;
|
||
rl_forward (count);
|
||
rl_kill_text (orig_point, rl_point);
|
||
rl_point = orig_point;
|
||
}
|
||
else
|
||
rl_delete_text (rl_point, rl_point + 1);
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Kill commands */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* The next two functions mimic unix line editing behaviour, except they
|
||
save the deleted text on the kill ring. This is safer than not saving
|
||
it, and since we have a ring, nobody should get screwed. */
|
||
|
||
/* This does what C-w does in Unix. We can't prevent people from
|
||
using behaviour that they expect. */
|
||
rl_unix_word_rubout ()
|
||
{
|
||
if (!rl_point) ding ();
|
||
else {
|
||
int orig_point = rl_point;
|
||
while (rl_point && whitespace (the_line[rl_point - 1]))
|
||
rl_point--;
|
||
while (rl_point && !whitespace (the_line[rl_point - 1]))
|
||
rl_point--;
|
||
rl_kill_text (rl_point, orig_point);
|
||
}
|
||
}
|
||
|
||
/* Here is C-u doing what Unix does. You don't *have* to use these
|
||
key-bindings. We have a choice of killing the entire line, or
|
||
killing from where we are to the start of the line. We choose the
|
||
latter, because if you are a Unix weenie, then you haven't backspaced
|
||
into the line at all, and if you aren't, then you know what you are
|
||
doing. */
|
||
rl_unix_line_discard ()
|
||
{
|
||
if (!rl_point) ding ();
|
||
else {
|
||
rl_kill_text (rl_point, 0);
|
||
rl_point = 0;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Commands For Typos */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Random and interesting things in here. */
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Changing Case */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* The three kinds of things that we know how to do. */
|
||
#define UpCase 1
|
||
#define DownCase 2
|
||
#define CapCase 3
|
||
|
||
/* Uppercase the word at point. */
|
||
rl_upcase_word (count)
|
||
int count;
|
||
{
|
||
rl_change_case (count, UpCase);
|
||
}
|
||
|
||
/* Lowercase the word at point. */
|
||
rl_downcase_word (count)
|
||
int count;
|
||
{
|
||
rl_change_case (count, DownCase);
|
||
}
|
||
|
||
/* Upcase the first letter, downcase the rest. */
|
||
rl_capitalize_word (count)
|
||
int count;
|
||
{
|
||
rl_change_case (count, CapCase);
|
||
}
|
||
|
||
/* The meaty function.
|
||
Change the case of COUNT words, performing OP on them.
|
||
OP is one of UpCase, DownCase, or CapCase.
|
||
If a negative argument is given, leave point where it started,
|
||
otherwise, leave it where it moves to. */
|
||
rl_change_case (count, op)
|
||
int count, op;
|
||
{
|
||
register int start = rl_point, end;
|
||
int state = 0;
|
||
|
||
rl_forward_word (count);
|
||
end = rl_point;
|
||
|
||
if (count < 0)
|
||
{
|
||
int temp = start;
|
||
start = end;
|
||
end = temp;
|
||
}
|
||
|
||
/* We are going to modify some text, so let's prepare to undo it. */
|
||
rl_modifying (start, end);
|
||
|
||
for (; start < end; start++)
|
||
{
|
||
switch (op)
|
||
{
|
||
case UpCase:
|
||
the_line[start] = to_upper (the_line[start]);
|
||
break;
|
||
|
||
case DownCase:
|
||
the_line[start] = to_lower (the_line[start]);
|
||
break;
|
||
|
||
case CapCase:
|
||
if (state == 0)
|
||
{
|
||
the_line[start] = to_upper (the_line[start]);
|
||
state = 1;
|
||
}
|
||
else
|
||
{
|
||
the_line[start] = to_lower (the_line[start]);
|
||
}
|
||
if (!pure_alphabetic (the_line[start]))
|
||
state = 0;
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
}
|
||
rl_point = end;
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Transposition */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Transpose the words at point. */
|
||
rl_transpose_words (count)
|
||
int count;
|
||
{
|
||
char *word1, *word2;
|
||
int w1_beg, w1_end, w2_beg, w2_end;
|
||
int orig_point = rl_point;
|
||
|
||
if (!count) return;
|
||
|
||
/* Find the two words. */
|
||
rl_forward_word (count);
|
||
w2_end = rl_point;
|
||
rl_backward_word (1);
|
||
w2_beg = rl_point;
|
||
rl_backward_word (count);
|
||
w1_beg = rl_point;
|
||
rl_forward_word (1);
|
||
w1_end = rl_point;
|
||
|
||
/* Do some check to make sure that there really are two words. */
|
||
if ((w1_beg == w2_beg) || (w2_beg < w1_end))
|
||
{
|
||
ding ();
|
||
rl_point = orig_point;
|
||
return;
|
||
}
|
||
|
||
/* Get the text of the words. */
|
||
word1 = rl_copy (w1_beg, w1_end);
|
||
word2 = rl_copy (w2_beg, w2_end);
|
||
|
||
/* We are about to do many insertions and deletions. Remember them
|
||
as one operation. */
|
||
rl_begin_undo_group ();
|
||
|
||
/* Do the stuff at word2 first, so that we don't have to worry
|
||
about word1 moving. */
|
||
rl_point = w2_beg;
|
||
rl_delete_text (w2_beg, w2_end);
|
||
rl_insert_text (word1);
|
||
|
||
rl_point = w1_beg;
|
||
rl_delete_text (w1_beg, w1_end);
|
||
rl_insert_text (word2);
|
||
|
||
/* This is exactly correct since the text before this point has not
|
||
changed in length. */
|
||
rl_point = w2_end;
|
||
|
||
/* I think that does it. */
|
||
rl_end_undo_group ();
|
||
free (word1); free (word2);
|
||
}
|
||
|
||
/* Transpose the characters at point. If point is at the end of the line,
|
||
then transpose the characters before point. */
|
||
rl_transpose_chars (count)
|
||
int count;
|
||
{
|
||
if (!count)
|
||
return;
|
||
|
||
if (!rl_point || rl_end < 2) {
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
while (count) {
|
||
if (rl_point == rl_end) {
|
||
int t = the_line[rl_point - 1];
|
||
the_line[rl_point - 1] = the_line[rl_point - 2];
|
||
the_line[rl_point - 2] = t;
|
||
} else {
|
||
int t = the_line[rl_point];
|
||
the_line[rl_point] = the_line[rl_point - 1];
|
||
the_line[rl_point - 1] = t;
|
||
if (count < 0 && rl_point)
|
||
rl_point--;
|
||
else
|
||
rl_point++;
|
||
}
|
||
if (count < 0)
|
||
count++;
|
||
else
|
||
count--;
|
||
}
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Bogus Flow Control */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
rl_restart_output (count, key)
|
||
int count, key;
|
||
{
|
||
int fildes = fileno (stdin);
|
||
#ifdef TIOCSTART
|
||
ioctl (fildes, TIOCSTART, 0);
|
||
#endif /* TIOCSTART */
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Completion matching, from readline's point of view. */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Pointer to the generator function for completion_matches ().
|
||
NULL means to use filename_entry_function (), the default filename
|
||
completer. */
|
||
Function *rl_completion_entry_function = (Function *)NULL;
|
||
|
||
/* Pointer to alternative function to create matches.
|
||
Function is called with TEXT, START, and END.
|
||
START and END are indices in RL_LINE_BUFFER saying what the boundaries
|
||
of TEXT are.
|
||
If this function exists and returns NULL then call the value of
|
||
rl_completion_entry_function to try to match, otherwise use the
|
||
array of strings returned. */
|
||
Function *rl_attempted_completion_function = (Function *)NULL;
|
||
|
||
/* Complete the word at or before point. You have supplied the function
|
||
that does the initial simple matching selection algorithm (see
|
||
completion_matches ()). The default is to do filename completion. */
|
||
rl_complete (ignore, invoking_key)
|
||
int ignore, invoking_key;
|
||
{
|
||
rl_complete_internal (TAB);
|
||
}
|
||
|
||
/* List the possible completions. See description of rl_complete (). */
|
||
rl_possible_completions ()
|
||
{
|
||
rl_complete_internal ('?');
|
||
}
|
||
|
||
/* The user must press "y" or "n". Non-zero return means "y" pressed. */
|
||
get_y_or_n ()
|
||
{
|
||
int c;
|
||
loop:
|
||
c = rl_read_key ();
|
||
if (c == 'y' || c == 'Y') return (1);
|
||
if (c == 'n' || c == 'N') return (0);
|
||
if (c == ABORT_CHAR) rl_abort ();
|
||
ding (); goto loop;
|
||
}
|
||
|
||
/* Up to this many items will be displayed in response to a
|
||
possible-completions call. After that, we ask the user if
|
||
she is sure she wants to see them all. */
|
||
int rl_completion_query_items = 100;
|
||
|
||
/* The basic list of characters that signal a break between words for the
|
||
completer routine. The contents of this variable is what breaks words
|
||
in the shell, i.e. " \t\n\"\\'`@$><=" */
|
||
char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=";
|
||
|
||
/* The list of characters that signal a break between words for
|
||
rl_complete_internal. The default list is the contents of
|
||
rl_basic_word_break_characters. */
|
||
char *rl_completer_word_break_characters = (char *)NULL;
|
||
|
||
/* List of characters that are word break characters, but should be left
|
||
in TEXT when it is passed to the completion function. The shell uses
|
||
this to help determine what kind of completing to do. */
|
||
char *rl_special_prefixes = (char *)NULL;
|
||
|
||
/* If non-zero, then disallow duplicates in the matches. */
|
||
int rl_ignore_completion_duplicates = 1;
|
||
|
||
/* Non-zero means that the results of the matches are to be treated
|
||
as filenames. This is ALWAYS zero on entry, and can only be changed
|
||
within a completion entry finder function. */
|
||
int rl_filename_completion_desired = 0;
|
||
|
||
/* Complete the word at or before point.
|
||
WHAT_TO_DO says what to do with the completion.
|
||
`?' means list the possible completions.
|
||
TAB means do standard completion.
|
||
`*' means insert all of the possible completions. */
|
||
rl_complete_internal (what_to_do)
|
||
int what_to_do;
|
||
{
|
||
char *filename_completion_function ();
|
||
char **completion_matches (), **matches;
|
||
Function *our_func;
|
||
int start, end, delimiter = 0;
|
||
char *text;
|
||
|
||
if (rl_completion_entry_function)
|
||
our_func = rl_completion_entry_function;
|
||
else
|
||
our_func = (int (*)())filename_completion_function;
|
||
|
||
/* Only the completion entry function can change this. */
|
||
rl_filename_completion_desired = 0;
|
||
|
||
/* We now look backwards for the start of a filename/variable word. */
|
||
end = rl_point;
|
||
if (rl_point)
|
||
{
|
||
while (--rl_point &&
|
||
!rindex (rl_completer_word_break_characters, the_line[rl_point]));
|
||
|
||
/* If we are at a word break, then advance past it. */
|
||
if (rindex (rl_completer_word_break_characters, (the_line[rl_point])))
|
||
{
|
||
/* If the character that caused the word break was a quoting
|
||
character, then remember it as the delimiter. */
|
||
if (rindex ("\"'", the_line[rl_point]) && (end - rl_point) > 1)
|
||
delimiter = the_line[rl_point];
|
||
|
||
/* If the character isn't needed to determine something special
|
||
about what kind of completion to perform, then advance past it. */
|
||
|
||
if (!rl_special_prefixes ||
|
||
!rindex (rl_special_prefixes, the_line[rl_point]))
|
||
rl_point++;
|
||
}
|
||
}
|
||
|
||
start = rl_point;
|
||
rl_point = end;
|
||
text = rl_copy (start, end);
|
||
|
||
/* If the user wants to TRY to complete, but then wants to give
|
||
up and use the default completion function, they set the
|
||
variable rl_attempted_completion_function. */
|
||
if (rl_attempted_completion_function)
|
||
{
|
||
matches =
|
||
(char **)(*rl_attempted_completion_function) (text, start, end);
|
||
|
||
if (matches)
|
||
goto after_usual_completion;
|
||
}
|
||
|
||
matches = completion_matches (text, our_func, start, end);
|
||
|
||
after_usual_completion:
|
||
free (text);
|
||
|
||
if (!matches)
|
||
ding ();
|
||
else
|
||
{
|
||
register int i;
|
||
|
||
some_matches:
|
||
|
||
/* It seems to me that in all the cases we handle we would like
|
||
to ignore duplicate possiblilities. Scan for the text to
|
||
insert being identical to the other completions. */
|
||
if (rl_ignore_completion_duplicates)
|
||
{
|
||
char *lowest_common;
|
||
int j, newlen = 0;
|
||
|
||
/* Sort the items. */
|
||
/* It is safe to sort this array, because the lowest common
|
||
denominator found in matches[0] will remain in place. */
|
||
for (i = 0; matches[i]; i++);
|
||
qsort (matches, i, sizeof (char *), compare_strings);
|
||
|
||
/* Remember the lowest common denimator for it may be unique. */
|
||
lowest_common = savestring (matches[0]);
|
||
|
||
for (i = 0; matches[i + 1]; i++)
|
||
{
|
||
if (strcmp (matches[i], matches[i + 1]) == 0)
|
||
{
|
||
free (matches[i]);
|
||
matches[i] = (char *)-1;
|
||
}
|
||
else
|
||
newlen++;
|
||
}
|
||
|
||
/* We have marked all the dead slots with (char *)-1.
|
||
Copy all the non-dead entries into a new array. */
|
||
{
|
||
char **temp_array =
|
||
(char **)malloc ((3 + newlen) * sizeof (char *));
|
||
|
||
for (i = 1, j = 1; matches[i]; i++)
|
||
if (matches[i] != (char *)-1)
|
||
temp_array[j++] = matches[i];
|
||
temp_array[j] = (char *)NULL;
|
||
|
||
if (matches[0] != (char *)-1)
|
||
free (matches[0]);
|
||
free (matches);
|
||
|
||
matches = temp_array;
|
||
}
|
||
|
||
/* Place the lowest common denominator back in [0]. */
|
||
matches[0] = lowest_common;
|
||
|
||
/* If there is one string left, and it is identical to the
|
||
lowest common denominator, then the LCD is the string to
|
||
insert. */
|
||
if (j == 2 && strcmp (matches[0], matches[1]) == 0)
|
||
{
|
||
free (matches[1]);
|
||
matches[1] = (char *)NULL;
|
||
}
|
||
}
|
||
|
||
switch (what_to_do)
|
||
{
|
||
case TAB:
|
||
if (matches[0])
|
||
{
|
||
rl_delete_text (start, rl_point);
|
||
rl_point = start;
|
||
rl_insert_text (matches[0]);
|
||
}
|
||
|
||
/* If there are more matches, ring the bell to indicate.
|
||
If this was the only match, and we are hacking files,
|
||
check the file to see if it was a directory. If so,
|
||
add a '/' to the name. If not, and we are at the end
|
||
of the line, then add a space. */
|
||
if (matches[1])
|
||
{
|
||
ding (); /* There are other matches remaining. */
|
||
}
|
||
else
|
||
{
|
||
char temp_string[2];
|
||
|
||
temp_string[0] = delimiter ? delimiter : ' ';
|
||
temp_string[1] = '\0';
|
||
|
||
if (rl_filename_completion_desired)
|
||
{
|
||
struct stat finfo;
|
||
char *tilde_expand ();
|
||
char *filename = tilde_expand (matches[0]);
|
||
|
||
if ((stat (filename, &finfo) == 0) &&
|
||
((finfo.st_mode & S_IFMT) == S_IFDIR))
|
||
{
|
||
if (the_line[rl_point] != '/')
|
||
rl_insert_text ("/");
|
||
}
|
||
else
|
||
{
|
||
if (rl_point == rl_end)
|
||
rl_insert_text (temp_string);
|
||
}
|
||
free (filename);
|
||
}
|
||
else
|
||
{
|
||
if (rl_point == rl_end)
|
||
rl_insert_text (temp_string);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case '*':
|
||
{
|
||
int i = 1;
|
||
|
||
rl_delete_text (start, rl_point);
|
||
rl_point = start;
|
||
rl_begin_undo_group ();
|
||
if (matches[1])
|
||
{
|
||
while (matches[i])
|
||
{
|
||
rl_insert_text (matches[i++]);
|
||
rl_insert_text (" ");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
rl_insert_text (matches[0]);
|
||
rl_insert_text (" ");
|
||
}
|
||
rl_end_undo_group ();
|
||
}
|
||
break;
|
||
|
||
|
||
case '?':
|
||
{
|
||
int len, count, limit, max = 0;
|
||
int j, k, l;
|
||
|
||
/* Handle simple case first. What if there is only one answer? */
|
||
if (!matches[1])
|
||
{
|
||
char *rindex (), *temp;
|
||
|
||
if (rl_filename_completion_desired)
|
||
temp = rindex (matches[0], '/');
|
||
else
|
||
temp = (char *)NULL;
|
||
|
||
if (!temp)
|
||
temp = matches[0];
|
||
else
|
||
temp++;
|
||
|
||
crlf ();
|
||
fprintf (out_stream, "%s", temp);
|
||
crlf ();
|
||
goto restart;
|
||
}
|
||
|
||
/* There is more than one answer. Find out how many there are,
|
||
and find out what the maximum printed length of a single entry
|
||
is. */
|
||
for (i = 1; matches[i]; i++)
|
||
{
|
||
char *rindex (), *temp = (char *)NULL;
|
||
|
||
/* If we are hacking filenames, then only count the characters
|
||
after the last slash in the pathname. */
|
||
if (rl_filename_completion_desired)
|
||
temp = rindex (matches[i], '/');
|
||
else
|
||
temp = (char *)NULL;
|
||
|
||
if (!temp)
|
||
temp = matches[i];
|
||
else
|
||
temp++;
|
||
|
||
if (strlen (temp) > max)
|
||
max = strlen (temp);
|
||
}
|
||
|
||
len = i;
|
||
|
||
/* If there are many items, then ask the user if she
|
||
really wants to see them all. */
|
||
if (len >= rl_completion_query_items)
|
||
{
|
||
crlf ();
|
||
fprintf (out_stream,
|
||
"There are %d possibilities. Do you really", len);
|
||
crlf ();
|
||
fprintf (out_stream, "wish to see them all? (y or n)");
|
||
fflush (out_stream);
|
||
if (!get_y_or_n ())
|
||
{
|
||
crlf ();
|
||
goto restart;
|
||
}
|
||
}
|
||
/* How many items of MAX length can we fit in the screen window? */
|
||
max += 2;
|
||
limit = screenwidth / max;
|
||
if (limit != 1 && (limit * max == screenwidth))
|
||
limit--;
|
||
|
||
/* How many iterations of the printing loop? */
|
||
count = (len + (limit - 1)) / limit;
|
||
|
||
/* Watch out for special case. If LEN is less than LIMIT, then
|
||
just do the inner printing loop. */
|
||
if (len < limit) count = 1;
|
||
|
||
/* Sort the items if they are not already sorted. */
|
||
if (!rl_ignore_completion_duplicates)
|
||
qsort (matches, len, sizeof (char *), compare_strings);
|
||
|
||
/* Print the sorted items, up-and-down alphabetically, like
|
||
ls might. */
|
||
crlf ();
|
||
|
||
for (i = 1; i < count + 1; i++)
|
||
{
|
||
for (j = 0, l = i; j < limit; j++)
|
||
{
|
||
if (l > len || !matches[l])
|
||
{
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
char *rindex (), *temp = (char *)NULL;
|
||
|
||
if (rl_filename_completion_desired)
|
||
temp = rindex (matches[l], '/');
|
||
else
|
||
temp = (char *)NULL;
|
||
|
||
if (!temp)
|
||
temp = matches[l];
|
||
else
|
||
temp++;
|
||
|
||
fprintf (out_stream, "%s", temp);
|
||
for (k = 0; k < max - strlen (temp); k++)
|
||
putc (' ', out_stream);
|
||
}
|
||
l += count;
|
||
}
|
||
crlf ();
|
||
}
|
||
restart:
|
||
|
||
rl_on_new_line ();
|
||
}
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
|
||
for (i = 0; matches[i]; i++)
|
||
free (matches[i]);
|
||
free (matches);
|
||
}
|
||
}
|
||
|
||
/* Stupid comparison routine for qsort () ing strings. */
|
||
static int
|
||
compare_strings (s1, s2)
|
||
char **s1, **s2;
|
||
{
|
||
return (strcmp (*s1, *s2));
|
||
}
|
||
|
||
/* A completion function for usernames.
|
||
TEXT contains a partial username preceded by a random
|
||
character (usually `~'). */
|
||
char *
|
||
username_completion_function (text, state)
|
||
int state;
|
||
char *text;
|
||
{
|
||
static char *username = (char *)NULL;
|
||
static struct passwd *entry;
|
||
static int namelen;
|
||
|
||
if (!state)
|
||
{
|
||
if (username)
|
||
free (username);
|
||
username = savestring (&text[1]);
|
||
namelen = strlen (username);
|
||
setpwent ();
|
||
}
|
||
|
||
while (entry = getpwent ())
|
||
{
|
||
if (strncmp (username, entry->pw_name, namelen) == 0)
|
||
break;
|
||
}
|
||
|
||
if (!entry)
|
||
{
|
||
endpwent ();
|
||
return ((char *)NULL);
|
||
}
|
||
else
|
||
{
|
||
char *value = (char *)xmalloc (2 + strlen (entry->pw_name));
|
||
*value = *text;
|
||
strcpy (value + 1, entry->pw_name);
|
||
rl_filename_completion_desired = 1;
|
||
return (value);
|
||
}
|
||
}
|
||
|
||
/* If non-null, this contains the address of a function to call if the
|
||
standard meaning for expanding a tilde fails. The function is called
|
||
with the text (sans tilde, as in "foo"), and returns a malloc()'ed string
|
||
which is the expansion, or a NULL pointer if there is no expansion. */
|
||
Function *rl_tilde_expander = (Function *)NULL;
|
||
|
||
/* Expand FILENAME if it begins with a tilde. This always returns
|
||
a new string. */
|
||
char *
|
||
tilde_expand (filename)
|
||
char *filename;
|
||
{
|
||
char *dirname = filename ? savestring (filename) : (char *)NULL;
|
||
|
||
if (dirname && *dirname == '~')
|
||
{
|
||
char *temp_name;
|
||
if (!dirname[1] || dirname[1] == '/')
|
||
{
|
||
/* Prepend $HOME to the rest of the string. */
|
||
char *temp_home = (char *)getenv ("HOME");
|
||
|
||
temp_name = (char *)alloca (1 + strlen (&dirname[1])
|
||
+ (temp_home? strlen (temp_home) : 0));
|
||
temp_name[0] = '\0';
|
||
if (temp_home)
|
||
strcpy (temp_name, temp_home);
|
||
strcat (temp_name, &dirname[1]);
|
||
free (dirname);
|
||
dirname = savestring (temp_name);
|
||
}
|
||
else
|
||
{
|
||
struct passwd *getpwnam (), *user_entry;
|
||
char *username = (char *)alloca (257);
|
||
int i, c;
|
||
|
||
for (i = 1; c = dirname[i]; i++)
|
||
{
|
||
if (c == '/') break;
|
||
else username[i - 1] = c;
|
||
}
|
||
username[i - 1] = '\0';
|
||
|
||
if (!(user_entry = getpwnam (username)))
|
||
{
|
||
/* If the calling program has a special syntax for
|
||
expanding tildes, and we couldn't find a standard
|
||
expansion, then let them try. */
|
||
if (rl_tilde_expander)
|
||
{
|
||
char *expansion;
|
||
|
||
expansion = (char *)(*rl_tilde_expander) (username);
|
||
|
||
if (expansion)
|
||
{
|
||
temp_name = (char *)alloca (1 + strlen (expansion)
|
||
+ strlen (&dirname[i]));
|
||
strcpy (temp_name, expansion);
|
||
strcat (temp_name, &dirname[i]);
|
||
free (expansion);
|
||
goto return_name;
|
||
}
|
||
}
|
||
/*
|
||
* We shouldn't report errors.
|
||
*/
|
||
}
|
||
else
|
||
{
|
||
temp_name = (char *)alloca (1 + strlen (user_entry->pw_dir)
|
||
+ strlen (&dirname[i]));
|
||
strcpy (temp_name, user_entry->pw_dir);
|
||
strcat (temp_name, &dirname[i]);
|
||
return_name:
|
||
free (dirname);
|
||
dirname = savestring (temp_name);
|
||
}
|
||
}
|
||
}
|
||
return (dirname);
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Undo, and Undoing */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Non-zero tells rl_delete_text and rl_insert_text to not add to
|
||
the undo list. */
|
||
int doing_an_undo = 0;
|
||
|
||
/* The current undo list for THE_LINE. */
|
||
UNDO_LIST *rl_undo_list = (UNDO_LIST *)NULL;
|
||
|
||
/* Remember how to undo something. Concatenate some undos if that
|
||
seems right. */
|
||
rl_add_undo (what, start, end, text)
|
||
enum undo_code what;
|
||
int start, end;
|
||
char *text;
|
||
{
|
||
UNDO_LIST *temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST));
|
||
temp->what = what;
|
||
temp->start = start;
|
||
temp->end = end;
|
||
temp->text = text;
|
||
temp->next = rl_undo_list;
|
||
rl_undo_list = temp;
|
||
}
|
||
|
||
/* Free the existing undo list. */
|
||
free_undo_list ()
|
||
{
|
||
while (rl_undo_list) {
|
||
UNDO_LIST *release = rl_undo_list;
|
||
rl_undo_list = rl_undo_list->next;
|
||
|
||
if (release->what == UNDO_DELETE)
|
||
free (release->text);
|
||
|
||
free (release);
|
||
}
|
||
}
|
||
|
||
/* Undo the next thing in the list. Return 0 if there
|
||
is nothing to undo, or non-zero if there was. */
|
||
int
|
||
rl_do_undo ()
|
||
{
|
||
UNDO_LIST *release;
|
||
int waiting_for_begin = 0;
|
||
|
||
undo_thing:
|
||
if (!rl_undo_list)
|
||
return (0);
|
||
|
||
doing_an_undo = 1;
|
||
|
||
switch (rl_undo_list->what) {
|
||
|
||
/* Undoing deletes means inserting some text. */
|
||
case UNDO_DELETE:
|
||
rl_point = rl_undo_list->start;
|
||
rl_insert_text (rl_undo_list->text);
|
||
free (rl_undo_list->text);
|
||
break;
|
||
|
||
/* Undoing inserts means deleting some text. */
|
||
case UNDO_INSERT:
|
||
rl_delete_text (rl_undo_list->start, rl_undo_list->end);
|
||
rl_point = rl_undo_list->start;
|
||
break;
|
||
|
||
/* Undoing an END means undoing everything 'til we get to
|
||
a BEGIN. */
|
||
case UNDO_END:
|
||
waiting_for_begin++;
|
||
break;
|
||
|
||
/* Undoing a BEGIN means that we are done with this group. */
|
||
case UNDO_BEGIN:
|
||
if (waiting_for_begin)
|
||
waiting_for_begin--;
|
||
else
|
||
abort ();
|
||
break;
|
||
}
|
||
|
||
doing_an_undo = 0;
|
||
|
||
release = rl_undo_list;
|
||
rl_undo_list = rl_undo_list->next;
|
||
free (release);
|
||
|
||
if (waiting_for_begin)
|
||
goto undo_thing;
|
||
|
||
return (1);
|
||
}
|
||
|
||
/* Begin a group. Subsequent undos are undone as an atomic operation. */
|
||
rl_begin_undo_group ()
|
||
{
|
||
rl_add_undo (UNDO_BEGIN, 0, 0, 0);
|
||
}
|
||
|
||
/* End an undo group started with rl_begin_undo_group (). */
|
||
rl_end_undo_group ()
|
||
{
|
||
rl_add_undo (UNDO_END, 0, 0, 0);
|
||
}
|
||
|
||
/* Save an undo entry for the text from START to END. */
|
||
rl_modifying (start, end)
|
||
int start, end;
|
||
{
|
||
if (start > end)
|
||
{
|
||
int t = start;
|
||
start = end;
|
||
end = t;
|
||
}
|
||
|
||
if (start != end)
|
||
{
|
||
char *temp = rl_copy (start, end);
|
||
rl_begin_undo_group ();
|
||
rl_add_undo (UNDO_DELETE, start, end, temp);
|
||
rl_add_undo (UNDO_INSERT, start, end, (char *)NULL);
|
||
rl_end_undo_group ();
|
||
}
|
||
}
|
||
|
||
/* Revert the current line to its previous state. */
|
||
rl_revert_line ()
|
||
{
|
||
if (!rl_undo_list) ding ();
|
||
else {
|
||
while (rl_undo_list)
|
||
rl_do_undo ();
|
||
}
|
||
}
|
||
|
||
/* Do some undoing of things that were done. */
|
||
rl_undo_command (count)
|
||
{
|
||
if (count < 0) return; /* Nothing to do. */
|
||
|
||
while (count)
|
||
{
|
||
if (rl_do_undo ())
|
||
{
|
||
count--;
|
||
}
|
||
else
|
||
{
|
||
ding ();
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* History Utilities */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* We already have a history library, and that is what we use to control
|
||
the history features of readline. However, this is our local interface
|
||
to the history mechanism. */
|
||
|
||
/* While we are editing the history, this is the saved
|
||
version of the original line. */
|
||
HIST_ENTRY *saved_line_for_history = (HIST_ENTRY *)NULL;
|
||
|
||
/* Set the history pointer back to the last entry in the history. */
|
||
start_using_history ()
|
||
{
|
||
using_history ();
|
||
if (saved_line_for_history)
|
||
free_history_entry (saved_line_for_history);
|
||
|
||
saved_line_for_history = (HIST_ENTRY *)NULL;
|
||
}
|
||
|
||
/* Free the contents (and containing structure) of a HIST_ENTRY. */
|
||
free_history_entry (entry)
|
||
HIST_ENTRY *entry;
|
||
{
|
||
if (!entry) return;
|
||
if (entry->line)
|
||
free (entry->line);
|
||
free (entry);
|
||
}
|
||
|
||
/* Perhaps put back the current line if it has changed. */
|
||
maybe_replace_line ()
|
||
{
|
||
HIST_ENTRY *temp = current_history ();
|
||
|
||
/* If the current line has changed, save the changes. */
|
||
if (temp && ((UNDO_LIST *)(temp->data) != rl_undo_list)) {
|
||
temp = replace_history_entry (where_history (), the_line, rl_undo_list);
|
||
free (temp->line);
|
||
free (temp);
|
||
}
|
||
}
|
||
|
||
/* Put back the saved_line_for_history if there is one. */
|
||
maybe_unsave_line ()
|
||
{
|
||
if (saved_line_for_history) {
|
||
strcpy (the_line, saved_line_for_history->line);
|
||
rl_undo_list = (UNDO_LIST *)saved_line_for_history->data;
|
||
free_history_entry (saved_line_for_history);
|
||
saved_line_for_history = (HIST_ENTRY *)NULL;
|
||
rl_end = rl_point = strlen (the_line);
|
||
} else {
|
||
ding ();
|
||
}
|
||
}
|
||
|
||
/* Save the current line in saved_line_for_history. */
|
||
maybe_save_line ()
|
||
{
|
||
if (!saved_line_for_history) {
|
||
saved_line_for_history = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
|
||
saved_line_for_history->line = savestring (the_line);
|
||
saved_line_for_history->data = (char *)rl_undo_list;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* History Commands */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Meta-< goes to the start of the history. */
|
||
rl_beginning_of_history ()
|
||
{
|
||
rl_get_previous_history (1 + where_history ());
|
||
}
|
||
|
||
/* Meta-> goes to the end of the history. (The current line). */
|
||
rl_end_of_history ()
|
||
{
|
||
maybe_replace_line ();
|
||
using_history ();
|
||
maybe_unsave_line ();
|
||
}
|
||
|
||
/* Move down to the next history line. */
|
||
rl_get_next_history (count)
|
||
int count;
|
||
{
|
||
HIST_ENTRY *temp = (HIST_ENTRY *)NULL;
|
||
|
||
if (count < 0)
|
||
{
|
||
rl_get_previous_history (-count);
|
||
return;
|
||
}
|
||
|
||
if (!count)
|
||
return;
|
||
|
||
maybe_replace_line ();
|
||
|
||
while (count)
|
||
{
|
||
temp = next_history ();
|
||
if (!temp)
|
||
break;
|
||
--count;
|
||
}
|
||
|
||
if (!temp)
|
||
maybe_unsave_line ();
|
||
else
|
||
{
|
||
strcpy (the_line, temp->line);
|
||
rl_undo_list = (UNDO_LIST *)temp->data;
|
||
rl_end = rl_point = strlen (the_line);
|
||
}
|
||
}
|
||
|
||
/* Get the previous item out of our interactive history, making it the current
|
||
line. If there is no previous history, just ding. */
|
||
rl_get_previous_history (count)
|
||
int count;
|
||
{
|
||
HIST_ENTRY *old_temp = (HIST_ENTRY *)NULL;
|
||
HIST_ENTRY *temp = (HIST_ENTRY *)NULL;
|
||
|
||
if (count < 0)
|
||
{
|
||
rl_get_next_history (-count);
|
||
return;
|
||
}
|
||
|
||
if (!count)
|
||
return;
|
||
|
||
/* If we don't have a line saved, then save this one. */
|
||
maybe_save_line ();
|
||
|
||
/* If the current line has changed, save the changes. */
|
||
maybe_replace_line ();
|
||
|
||
while (count)
|
||
{
|
||
temp = previous_history ();
|
||
if (!temp)
|
||
break;
|
||
else
|
||
old_temp = temp;
|
||
--count;
|
||
}
|
||
|
||
/* If there was a large argument, and we moved back to the start of the
|
||
history, that is not an error. So use the last value found. */
|
||
if (!temp && old_temp)
|
||
temp = old_temp;
|
||
|
||
if (!temp)
|
||
ding ();
|
||
else
|
||
{
|
||
strcpy (the_line, temp->line);
|
||
rl_undo_list = (UNDO_LIST *)temp->data;
|
||
rl_end = rl_point = strlen (the_line);
|
||
#ifdef VI_MODE
|
||
if (rl_editing_mode == vi_mode)
|
||
rl_point = 0;
|
||
#endif /* VI_MODE */
|
||
}
|
||
}
|
||
|
||
/* There is a command in ksh which yanks into this line, the last word
|
||
of the previous line. Here it is. We left it on M-. */
|
||
rl_yank_previous_last_arg (ignore)
|
||
int ignore;
|
||
{
|
||
}
|
||
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* I-Search and Searching */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Search backwards through the history looking for a string which is typed
|
||
interactively. Start with the current line. */
|
||
rl_reverse_search_history (sign, key)
|
||
int sign;
|
||
int key;
|
||
{
|
||
rl_search_history (-sign, key);
|
||
}
|
||
|
||
/* Search forwards through the history looking for a string which is typed
|
||
interactively. Start with the current line. */
|
||
rl_forward_search_history (sign, key)
|
||
int sign;
|
||
int key;
|
||
{
|
||
rl_search_history (sign, key);
|
||
}
|
||
|
||
/* Display the current state of the search in the echo-area.
|
||
SEARCH_STRING contains the string that is being searched for,
|
||
DIRECTION is zero for forward, or 1 for reverse,
|
||
WHERE is the history list number of the current line. If it is
|
||
-1, then this line is the starting one. */
|
||
rl_display_search (search_string, reverse_p, where)
|
||
char *search_string;
|
||
int reverse_p, where;
|
||
{
|
||
char *message = (char *)NULL;
|
||
|
||
message =
|
||
(char *)alloca (1 + (search_string ? strlen (search_string) : 0) + 30);
|
||
|
||
*message = '\0';
|
||
|
||
#ifdef NEVER
|
||
if (where != -1)
|
||
sprintf (message, "[%d]", where + history_base);
|
||
#endif
|
||
|
||
strcat (message, "(");
|
||
|
||
if (reverse_p)
|
||
strcat (message, "reverse-");
|
||
|
||
strcat (message, "i-search)`");
|
||
|
||
if (search_string)
|
||
strcat (message, search_string);
|
||
|
||
strcat (message, "': ");
|
||
rl_message (message, 0, 0);
|
||
rl_redisplay ();
|
||
}
|
||
|
||
/* Search through the history looking for an interactively typed string.
|
||
This is analogous to i-search. We start the search in the current line.
|
||
DIRECTION is which direction to search; > 0 means forward, < 0 means
|
||
backwards. */
|
||
rl_search_history (direction, invoking_key)
|
||
int direction;
|
||
int invoking_key;
|
||
{
|
||
/* The string that the user types in to search for. */
|
||
char *search_string = (char *)alloca (128);
|
||
|
||
/* The current length of SEARCH_STRING. */
|
||
int search_string_index;
|
||
|
||
/* The list of lines to search through. */
|
||
char **lines;
|
||
|
||
/* The length of LINES. */
|
||
int hlen;
|
||
|
||
/* Where we get LINES from. */
|
||
HIST_ENTRY **hlist = history_list ();
|
||
|
||
int orig_point = rl_point;
|
||
int orig_line = where_history ();
|
||
int last_found_line = orig_line;
|
||
int c, done = 0;
|
||
register int i = 0;
|
||
|
||
|
||
/* The line currently being searched. */
|
||
char *sline;
|
||
|
||
/* Offset in that line. */
|
||
int index;
|
||
|
||
/* Non-zero if we are doing a reverse search. */
|
||
int reverse = (direction < 0);
|
||
|
||
/* Create an arrary of pointers to the lines that we want to search. */
|
||
|
||
maybe_replace_line ();
|
||
if (hlist)
|
||
for (i = 0; hlist[i]; i++);
|
||
|
||
/* Allocate space for this many lines, +1 for the current input line,
|
||
and remember those lines. */
|
||
lines = (char **)alloca ((1 + (hlen = i)) * sizeof (char *));
|
||
for (i = 0; i < hlen; i++)
|
||
lines[i] = hlist[i]->line;
|
||
|
||
if (saved_line_for_history)
|
||
lines[i] = saved_line_for_history->line;
|
||
else
|
||
{
|
||
/* So I have to type it in this way instead. */
|
||
lines[i] = (char *)alloca (1 + strlen (the_line));
|
||
strcpy (lines[i], &the_line[0]);
|
||
}
|
||
|
||
hlen++;
|
||
|
||
/* The line where we start the search. */
|
||
i = orig_line;
|
||
|
||
/* Initialize search parameters. */
|
||
*search_string = '\0';
|
||
search_string_index = 0;
|
||
|
||
rl_display_search (search_string, reverse, -1);
|
||
|
||
sline = the_line;
|
||
index = rl_point;
|
||
|
||
while (!done)
|
||
{
|
||
c = rl_read_key ();
|
||
|
||
/* Hack C to Do What I Mean. */
|
||
{
|
||
Function *f = (Function *)NULL;
|
||
|
||
if (keymap[c].type == ISFUNC)
|
||
f = keymap[c].function;
|
||
|
||
if (f == rl_reverse_search_history)
|
||
c = reverse ? -1 : -2;
|
||
else if (f == rl_forward_search_history)
|
||
c = !reverse ? -1 : -2;
|
||
}
|
||
|
||
switch (c)
|
||
{
|
||
case ESC:
|
||
done = 1;
|
||
continue;
|
||
|
||
/* case invoking_key: */
|
||
case -1:
|
||
goto search_again;
|
||
|
||
/* switch directions */
|
||
case -2:
|
||
direction = -direction;
|
||
reverse = (direction < 0);
|
||
|
||
goto do_search;
|
||
|
||
case CTRL ('G'):
|
||
strcpy (the_line, lines[orig_line]);
|
||
rl_point = orig_point;
|
||
rl_end = strlen (the_line);
|
||
rl_clear_message ();
|
||
return;
|
||
|
||
default:
|
||
if (c < 32 || c > 126)
|
||
{
|
||
rl_execute_next (c);
|
||
done = 1;
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
search_string[search_string_index++] = c;
|
||
search_string[search_string_index] = '\0';
|
||
goto do_search;
|
||
|
||
search_again:
|
||
|
||
if (!search_string_index)
|
||
continue;
|
||
else
|
||
{
|
||
if (reverse)
|
||
--index;
|
||
else
|
||
if (index != strlen (sline))
|
||
++index;
|
||
else
|
||
ding ();
|
||
}
|
||
do_search:
|
||
|
||
while (1)
|
||
{
|
||
if (reverse)
|
||
{
|
||
while (index >= 0)
|
||
if (strncmp
|
||
(search_string,
|
||
sline + index,
|
||
search_string_index) == 0)
|
||
goto string_found;
|
||
else
|
||
index--;
|
||
}
|
||
else
|
||
{
|
||
register int limit =
|
||
(strlen (sline) - search_string_index) + 1;
|
||
|
||
while (index < limit)
|
||
{
|
||
if (strncmp (search_string,
|
||
sline + index,
|
||
search_string_index) == 0)
|
||
goto string_found;
|
||
index++;
|
||
}
|
||
}
|
||
|
||
next_line:
|
||
i += direction;
|
||
|
||
/* At limit for direction? */
|
||
if ((reverse && i < 0) ||
|
||
(!reverse && i == hlen))
|
||
goto search_failed;
|
||
|
||
sline = lines[i];
|
||
if (reverse)
|
||
index = strlen (sline);
|
||
else
|
||
index = 0;
|
||
|
||
/* If the search string is longer than the current
|
||
line, no match. */
|
||
if (search_string_index > strlen (sline))
|
||
goto next_line;
|
||
|
||
/* Start actually searching. */
|
||
if (reverse)
|
||
index -= search_string_index;
|
||
}
|
||
|
||
search_failed:
|
||
/* We cannot find the search string. Ding the bell. */
|
||
ding ();
|
||
i = last_found_line;
|
||
break;
|
||
|
||
string_found:
|
||
/* We have found the search string. Just display it. But don't
|
||
actually move there in the history list until the user accepts
|
||
the location. */
|
||
strcpy (the_line, lines[i]);
|
||
rl_point = index;
|
||
rl_end = strlen (the_line);
|
||
last_found_line = i;
|
||
rl_display_search (search_string, reverse,
|
||
(i == orig_line) ? -1 : i);
|
||
}
|
||
}
|
||
continue;
|
||
}
|
||
/* The user has won. They found the string that they wanted. Now all
|
||
we have to do is place them there. */
|
||
{
|
||
int now = last_found_line;
|
||
|
||
/* First put back the original state. */
|
||
strcpy (the_line, lines[orig_line]);
|
||
|
||
if (now < orig_line)
|
||
rl_get_previous_history (orig_line - now);
|
||
else
|
||
rl_get_next_history (now - orig_line);
|
||
|
||
rl_point = index;
|
||
rl_clear_message ();
|
||
}
|
||
}
|
||
|
||
/* Make C be the next command to be executed. */
|
||
rl_execute_next (c)
|
||
int c;
|
||
{
|
||
rl_pending_input = c;
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Killing Mechanism */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* What we assume for a max number of kills. */
|
||
#define DEFAULT_MAX_KILLS 10
|
||
|
||
/* The real variable to look at to find out when to flush kills. */
|
||
int rl_max_kills = DEFAULT_MAX_KILLS;
|
||
|
||
/* Where to store killed text. */
|
||
char **rl_kill_ring = (char **)NULL;
|
||
|
||
/* Where we are in the kill ring. */
|
||
int rl_kill_index = 0;
|
||
|
||
/* How many slots we have in the kill ring. */
|
||
int rl_kill_ring_length = 0;
|
||
|
||
/* How to say that you only want to save a certain amount
|
||
of kill material. */
|
||
rl_set_retained_kills (num)
|
||
int num;
|
||
{}
|
||
|
||
/* The way to kill something. This appends or prepends to the last
|
||
kill, if the last command was a kill command. if FROM is less
|
||
than TO, then the text is appended, otherwise prepended. If the
|
||
last command was not a kill command, then a new slot is made for
|
||
this kill. */
|
||
rl_kill_text (from, to)
|
||
int from, to;
|
||
{
|
||
int slot;
|
||
char *text = rl_copy (from, to);
|
||
|
||
/* Is there anything to kill? */
|
||
if (from == to) {
|
||
free (text);
|
||
last_command_was_kill++;
|
||
return;
|
||
}
|
||
|
||
/* Delete the copied text from the line. */
|
||
rl_delete_text (from, to);
|
||
|
||
/* First, find the slot to work with. */
|
||
if (!last_command_was_kill) {
|
||
|
||
/* Get a new slot. */
|
||
if (!rl_kill_ring) {
|
||
|
||
/* If we don't have any defined, then make one. */
|
||
rl_kill_ring =
|
||
(char **)xmalloc (((rl_kill_ring_length = 1) + 1) * sizeof (char *));
|
||
slot = 1;
|
||
|
||
} else {
|
||
|
||
/* We have to add a new slot on the end, unless we have exceeded
|
||
the max limit for remembering kills. */
|
||
slot = rl_kill_ring_length;
|
||
if (slot == rl_max_kills) {
|
||
register int i;
|
||
free (rl_kill_ring[0]);
|
||
for (i = 0; i < slot; i++)
|
||
rl_kill_ring[i] = rl_kill_ring[i + 1];
|
||
} else {
|
||
rl_kill_ring =
|
||
(char **)xrealloc (rl_kill_ring,
|
||
((slot = (rl_kill_ring_length += 1)) + 1)
|
||
* sizeof (char *));
|
||
}
|
||
}
|
||
slot--;
|
||
} else {
|
||
slot = rl_kill_ring_length - 1;
|
||
}
|
||
|
||
/* If the last command was a kill, prepend or append. */
|
||
if (last_command_was_kill) {
|
||
char *old = rl_kill_ring[slot];
|
||
char *new = (char *)xmalloc (1 + strlen (old) + strlen (text));
|
||
|
||
if (from < to) {
|
||
strcpy (new, old);
|
||
strcat (new, text);
|
||
} else {
|
||
strcpy (new, text);
|
||
strcat (new, old);
|
||
}
|
||
free (old);
|
||
free (text);
|
||
rl_kill_ring[slot] = new;
|
||
} else {
|
||
rl_kill_ring[slot] = text;
|
||
}
|
||
rl_kill_index = slot;
|
||
last_command_was_kill++;
|
||
}
|
||
|
||
/* Now REMEMBER! In order to do prepending or appending correctly, kill
|
||
commands always make rl_point's original position be the FROM argument,
|
||
and rl_point's extent be the TO argument. */
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Killing Commands */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Delete the word at point, saving the text in the kill ring. */
|
||
rl_kill_word (count)
|
||
int count;
|
||
{
|
||
int orig_point = rl_point;
|
||
|
||
if (count < 0)
|
||
rl_backward_kill_word (-count);
|
||
else
|
||
{
|
||
rl_forward_word (count);
|
||
|
||
if (rl_point != orig_point)
|
||
rl_kill_text (orig_point, rl_point);
|
||
|
||
rl_point = orig_point;
|
||
}
|
||
}
|
||
|
||
/* Rubout the word before point, placing it on the kill ring. */
|
||
rl_backward_kill_word (count)
|
||
int count;
|
||
{
|
||
int orig_point = rl_point;
|
||
|
||
if (count < 0)
|
||
rl_kill_word (-count);
|
||
else
|
||
{
|
||
rl_backward_word (count);
|
||
|
||
if (rl_point != orig_point)
|
||
rl_kill_text (orig_point, rl_point);
|
||
}
|
||
}
|
||
|
||
/* Kill from here to the end of the line. If DIRECTION is negative, kill
|
||
back to the line start instead. */
|
||
rl_kill_line (direction)
|
||
int direction;
|
||
{
|
||
int orig_point = rl_point;
|
||
|
||
if (direction < 0)
|
||
rl_backward_kill_line (1);
|
||
else
|
||
{
|
||
rl_end_of_line ();
|
||
if (orig_point != rl_point)
|
||
rl_kill_text (orig_point, rl_point);
|
||
rl_point = orig_point;
|
||
}
|
||
}
|
||
|
||
/* Kill backwards to the start of the line. If DIRECTION is negative, kill
|
||
forwards to the line end instead. */
|
||
rl_backward_kill_line (direction)
|
||
int direction;
|
||
{
|
||
int orig_point = rl_point;
|
||
|
||
if (direction < 0)
|
||
rl_kill_line (1);
|
||
else
|
||
{
|
||
if (!rl_point)
|
||
ding ();
|
||
else
|
||
{
|
||
rl_beg_of_line ();
|
||
rl_kill_text (orig_point, rl_point);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Yank back the last killed text. This ignores arguments. */
|
||
rl_yank ()
|
||
{
|
||
if (!rl_kill_ring) rl_abort ();
|
||
rl_insert_text (rl_kill_ring[rl_kill_index]);
|
||
}
|
||
|
||
/* If the last command was yank, or yank_pop, and the text just
|
||
before point is identical to the current kill item, then
|
||
delete that text from the line, rotate the index down, and
|
||
yank back some other text. */
|
||
rl_yank_pop ()
|
||
{
|
||
int l;
|
||
|
||
if (((rl_last_func != rl_yank_pop) && (rl_last_func != rl_yank)) ||
|
||
!rl_kill_ring)
|
||
{
|
||
rl_abort ();
|
||
}
|
||
|
||
l = strlen (rl_kill_ring[rl_kill_index]);
|
||
if (((rl_point - l) >= 0) &&
|
||
(strncmp (the_line + (rl_point - l),
|
||
rl_kill_ring[rl_kill_index], l) == 0))
|
||
{
|
||
rl_delete_text ((rl_point - l), rl_point);
|
||
rl_point -= l;
|
||
rl_kill_index--;
|
||
if (rl_kill_index < 0)
|
||
rl_kill_index = rl_kill_ring_length - 1;
|
||
rl_yank ();
|
||
}
|
||
else
|
||
rl_abort ();
|
||
|
||
}
|
||
|
||
/* Yank the COUNTth argument from the previous history line. */
|
||
rl_yank_nth_arg (count, ignore)
|
||
int count;
|
||
{
|
||
register HIST_ENTRY *entry = previous_history ();
|
||
char *arg;
|
||
|
||
if (entry)
|
||
next_history ();
|
||
else
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
arg = history_arg_extract (count, count, entry->line);
|
||
if (!arg || !*arg)
|
||
{
|
||
ding ();
|
||
return;
|
||
}
|
||
|
||
rl_begin_undo_group ();
|
||
if (rl_point && the_line[rl_point - 1] != ' ')
|
||
rl_insert_text (" ");
|
||
rl_insert_text (arg);
|
||
free (arg);
|
||
rl_end_undo_group ();
|
||
}
|
||
|
||
/* Vi Mode. */
|
||
#ifdef VI_MODE
|
||
#include "vi_mode.c"
|
||
#endif /* VI_MODE */
|
||
|
||
/* How to toggle back and forth between editing modes. */
|
||
rl_vi_editing_mode ()
|
||
{
|
||
#ifdef VI_MODE
|
||
rl_editing_mode = vi_mode;
|
||
rl_vi_insertion_mode ();
|
||
#endif /* VI_MODE */
|
||
}
|
||
|
||
rl_emacs_editing_mode ()
|
||
{
|
||
rl_editing_mode = emacs_mode;
|
||
keymap = emacs_standard_keymap;
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Completion */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Non-zero means that case is not significant in completion. */
|
||
int completion_case_fold = 0;
|
||
|
||
/* Return an array of (char *) which is a list of completions for TEXT.
|
||
If there are no completions, return a NULL pointer.
|
||
The first entry in the returned array is the substitution for TEXT.
|
||
The remaining entries are the possible completions.
|
||
The array is terminated with a NULL pointer.
|
||
|
||
ENTRY_FUNCTION is a function of two args, and returns a (char *).
|
||
The first argument is TEXT.
|
||
The second is a state argument; it should be zero on the first call, and
|
||
non-zero on subsequent calls. It returns a NULL pointer to the caller
|
||
when there are no more matches.
|
||
*/
|
||
char **
|
||
completion_matches (text, entry_function)
|
||
char *text;
|
||
char *(*entry_function) ();
|
||
{
|
||
/* Number of slots in match_list. */
|
||
int match_list_size;
|
||
|
||
/* The list of matches. */
|
||
char **match_list =
|
||
(char **)xmalloc (((match_list_size = 10) + 1) * sizeof (char *));
|
||
|
||
/* Number of matches actually found. */
|
||
int matches = 0;
|
||
|
||
/* Temporary string binder. */
|
||
char *string;
|
||
|
||
match_list[1] = (char *)NULL;
|
||
|
||
while (string = (*entry_function) (text, matches))
|
||
{
|
||
if (matches + 1 == match_list_size)
|
||
match_list =
|
||
(char **)xrealloc (match_list,
|
||
((match_list_size += 10) + 1) * sizeof (char *));
|
||
|
||
match_list[++matches] = string;
|
||
match_list[matches + 1] = (char *)NULL;
|
||
}
|
||
|
||
/* If there were any matches, then look through them finding out the
|
||
lowest common denominator. That then becomes match_list[0]. */
|
||
if (matches)
|
||
{
|
||
register int i = 1;
|
||
int low = 100000; /* Count of max-matched characters. */
|
||
|
||
/* If only one match, just use that. */
|
||
if (matches == 1)
|
||
{
|
||
match_list[0] = match_list[1];
|
||
match_list[1] = (char *)NULL;
|
||
}
|
||
else
|
||
{
|
||
/* Otherwise, compare each member of the list with
|
||
the next, finding out where they stop matching. */
|
||
|
||
while (i < matches)
|
||
{
|
||
register int c1, c2, si;
|
||
|
||
if (completion_case_fold)
|
||
{
|
||
for (si = 0;
|
||
(c1 = to_lower(match_list[i][si])) &&
|
||
(c2 = to_lower(match_list[i + 1][si]));
|
||
si++)
|
||
if (c1 != c2) break;
|
||
}
|
||
else
|
||
{
|
||
for (si = 0;
|
||
(c1 = match_list[i][si]) &&
|
||
(c2 = match_list[i + 1][si]);
|
||
si++)
|
||
if (c1 != c2) break;
|
||
}
|
||
|
||
if (low > si) low = si;
|
||
i++;
|
||
}
|
||
match_list[0] = (char *)xmalloc (low + 1);
|
||
strncpy (match_list[0], match_list[1], low);
|
||
match_list[0][low] = '\0';
|
||
}
|
||
}
|
||
else /* There were no matches. */
|
||
{
|
||
free (match_list);
|
||
match_list = (char **)NULL;
|
||
}
|
||
return (match_list);
|
||
}
|
||
|
||
/* Okay, now we write the entry_function for filename completion. In the
|
||
general case. Note that completion in the shell is a little different
|
||
because of all the pathnames that must be followed when looking up the
|
||
completion for a command. */
|
||
char *
|
||
filename_completion_function (text, state)
|
||
int state;
|
||
char *text;
|
||
{
|
||
static DIR *directory;
|
||
static char *filename = (char *)NULL;
|
||
static char *dirname = (char *)NULL;
|
||
static char *users_dirname = (char *)NULL;
|
||
static int filename_len;
|
||
|
||
struct direct *entry = (struct direct *)NULL;
|
||
|
||
/* If we don't have any state, then do some initialization. */
|
||
if (!state)
|
||
{
|
||
char *rindex (), *temp;
|
||
|
||
if (dirname) free (dirname);
|
||
if (filename) free (filename);
|
||
if (users_dirname) free (users_dirname);
|
||
|
||
filename = savestring (text);
|
||
if (!*text) text = ".";
|
||
dirname = savestring (text);
|
||
|
||
temp = rindex (dirname, '/');
|
||
|
||
if (temp)
|
||
{
|
||
strcpy (filename, ++temp);
|
||
*temp = '\0';
|
||
}
|
||
else
|
||
strcpy (dirname, ".");
|
||
|
||
/* We aren't done yet. We also support the "~user" syntax. */
|
||
|
||
/* Save the version of the directory that the user typed. */
|
||
users_dirname = savestring (dirname);
|
||
{
|
||
char *tilde_expand (), *temp_dirname = tilde_expand (dirname);
|
||
free (dirname);
|
||
dirname = temp_dirname;
|
||
|
||
if (rl_symbolic_link_hook)
|
||
(*rl_symbolic_link_hook) (&dirname);
|
||
}
|
||
directory = opendir (dirname);
|
||
filename_len = strlen (filename);
|
||
|
||
rl_filename_completion_desired = 1;
|
||
}
|
||
|
||
/* At this point we should entertain the possibility of hacking wildcarded
|
||
filenames, like /usr/man*\/te<TAB>. If the directory name contains
|
||
globbing characters, then build an array of directories to glob on, and
|
||
glob on the first one. */
|
||
|
||
/* Now that we have some state, we can read the directory. */
|
||
|
||
while (directory && (entry = readdir (directory)))
|
||
{
|
||
/* Special case for no filename.
|
||
All entries except "." and ".." match. */
|
||
if (!filename_len)
|
||
{
|
||
if ((strcmp (entry->d_name, ".") != 0) &&
|
||
(strcmp (entry->d_name, "..") != 0))
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
/* Otherwise, if these match upto the length of filename, then
|
||
it is a match. */
|
||
#ifdef TMB_SYSV
|
||
if ((strlen (entry->d_name) >= filename_len) &&
|
||
(strncmp (filename, entry->d_name, filename_len) == 0))
|
||
#else
|
||
if ((entry->d_namlen >= filename_len) &&
|
||
(strncmp (filename, entry->d_name, filename_len) == 0))
|
||
#endif /* TMB_SYSV */
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!entry)
|
||
{
|
||
if (directory)
|
||
{
|
||
closedir (directory);
|
||
directory = (DIR *)NULL;
|
||
}
|
||
return (char *)NULL;
|
||
}
|
||
else
|
||
{
|
||
char *temp;
|
||
|
||
if (dirname && (strcmp (dirname, ".") != 0))
|
||
{
|
||
#ifdef TMB_SYSV
|
||
temp = (char *)xmalloc (1 + strlen (users_dirname)
|
||
+ strlen (entry->d_name));
|
||
#else
|
||
temp = (char *)xmalloc (1 + strlen (users_dirname)
|
||
+ entry->d_namlen);
|
||
#endif /* TMB_SYSV */
|
||
strcpy (temp, users_dirname);
|
||
strcat (temp, entry->d_name);
|
||
}
|
||
else
|
||
{
|
||
temp = (savestring (entry->d_name));
|
||
}
|
||
return (temp);
|
||
}
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Binding keys */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* rl_add_defun (char *name, Function *function, int key)
|
||
Add NAME to the list of named functions. Make FUNCTION
|
||
be the function that gets called.
|
||
If KEY is not -1, then bind it. */
|
||
rl_add_defun (name, function, key)
|
||
char *name;
|
||
Function *function;
|
||
int key;
|
||
{
|
||
if (key != -1)
|
||
rl_bind_key (key, function);
|
||
rl_add_funmap_entry (name, function);
|
||
}
|
||
|
||
/* Bind KEY to FUNCTION. Returns non-zero if KEY is out of range. */
|
||
int
|
||
rl_bind_key (key, function)
|
||
int key;
|
||
Function *function;
|
||
{
|
||
if (key < 0)
|
||
return (key);
|
||
|
||
if (key > 127 && key < 256)
|
||
{
|
||
if (keymap[ESC].type == ISKMAP)
|
||
{
|
||
Keymap escmap = (Keymap)keymap[ESC].function;
|
||
|
||
key -= 128;
|
||
escmap[key].type = ISFUNC;
|
||
escmap[key].function = function;
|
||
return (0);
|
||
}
|
||
return (key);
|
||
}
|
||
|
||
keymap[key].type = ISFUNC;
|
||
keymap[key].function = function;
|
||
return (0);
|
||
}
|
||
|
||
/* Bind KEY to FUNCTION in MAP. Returns non-zero in case of invalid
|
||
KEY. */
|
||
int
|
||
rl_bind_key_in_map (key, function, map)
|
||
int key;
|
||
Function *function;
|
||
Keymap map;
|
||
{
|
||
int result;
|
||
Keymap oldmap = keymap;
|
||
|
||
keymap = map;
|
||
result = rl_bind_key (key, function);
|
||
keymap = oldmap;
|
||
return (result);
|
||
}
|
||
|
||
/* Make KEY do nothing in the currently selected keymap.
|
||
Returns non-zero in case of error. */
|
||
int
|
||
rl_unbind_key (key)
|
||
int key;
|
||
{
|
||
return (rl_bind_key (key, (Function *)NULL));
|
||
}
|
||
|
||
/* Make KEY do nothing in MAP.
|
||
Returns non-zero in case of error. */
|
||
int
|
||
rl_unbind_key_in_map (key, map)
|
||
int key;
|
||
Keymap map;
|
||
{
|
||
return (rl_bind_key_in_map (key, (Function *)NULL, map));
|
||
}
|
||
|
||
/* Bind the key sequence represented by the string KEYSEQ to
|
||
FUNCTION. This makes new keymaps as necessary. The initial
|
||
place to do bindings is in MAP. */
|
||
rl_set_key (keyseq, function, map)
|
||
char *keyseq;
|
||
Function *function;
|
||
Keymap map;
|
||
{
|
||
rl_generic_bind (ISFUNC, keyseq, function, map);
|
||
}
|
||
|
||
/* Bind the key sequence represented by the string KEYSEQ to
|
||
the string of characters MACRO. This makes new keymaps as
|
||
necessary. The initial place to do bindings is in MAP. */
|
||
rl_macro_bind (keyseq, macro, map)
|
||
char *keyseq, *macro;
|
||
Keymap map;
|
||
{
|
||
char *macro_keys = (char *)xmalloc (2 * (strlen (macro)));
|
||
int macro_keys_len;
|
||
|
||
if (rl_translate_keyseq (macro, macro_keys, ¯o_keys_len))
|
||
{
|
||
free (macro_keys);
|
||
return;
|
||
}
|
||
rl_generic_bind (ISMACR, keyseq, macro_keys, map);
|
||
}
|
||
|
||
/* Bind the key sequence represented by the string KEYSEQ to
|
||
the arbitrary pointer DATA. TYPE says what kind of data is
|
||
pointed to by DATA, right now this can be a function (ISFUNC),
|
||
a macro (ISMACR), or a keymap (ISKMAP). This makes new keymaps
|
||
as necessary. The initial place to do bindings is in MAP. */
|
||
rl_generic_bind (type, keyseq, data, map)
|
||
int type;
|
||
char *keyseq, *data;
|
||
Keymap map;
|
||
{
|
||
char *keys;
|
||
int keys_len;
|
||
register int i;
|
||
|
||
/* If no keys to bind to, exit right away. */
|
||
if (!keyseq || !*keyseq)
|
||
{
|
||
if (type == ISMACR)
|
||
free (data);
|
||
return;
|
||
}
|
||
|
||
keys = (char *)alloca (1 + (2 * strlen (keyseq)));
|
||
|
||
/* Translate the ASCII representation of KEYSEQ into an array
|
||
of characters. Stuff the characters into ARRAY, and the
|
||
length of ARRAY into LENGTH. */
|
||
if (rl_translate_keyseq (keyseq, keys, &keys_len))
|
||
return;
|
||
|
||
/* Bind keys, making new keymaps as necessary. */
|
||
for (i = 0; i < keys_len; i++)
|
||
{
|
||
if (i + 1 < keys_len)
|
||
{
|
||
if (map[keys[i]].type != ISKMAP)
|
||
{
|
||
if (map[i].type == ISMACR)
|
||
free ((char *)map[i].function);
|
||
|
||
map[keys[i]].type = ISKMAP;
|
||
map[keys[i]].function = (Function *)rl_make_bare_keymap ();
|
||
}
|
||
map = (Keymap)map[keys[i]].function;
|
||
}
|
||
else
|
||
{
|
||
if (map[keys[i]].type == ISMACR)
|
||
free ((char *)map[keys[i]].function);
|
||
|
||
map[keys[i]].function = (Function *)data;
|
||
map[keys[i]].type = type;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Translate the ASCII representation of SEQ, stuffing the
|
||
values into ARRAY, an array of characters. LEN gets the
|
||
final length of ARRAY. Return non-zero if there was an
|
||
error parsing SEQ. */
|
||
rl_translate_keyseq (seq, array, len)
|
||
char *seq, *array;
|
||
int *len;
|
||
{
|
||
register int i, c, l = 0;
|
||
|
||
for (i = 0; c = seq[i]; i++)
|
||
{
|
||
if (c == '\\')
|
||
{
|
||
c = seq[++i];
|
||
|
||
if (!c)
|
||
break;
|
||
|
||
if (((c == 'C' || c == 'M') && seq[i + 1] == '-') ||
|
||
(c == 'e'))
|
||
{
|
||
/* Handle special case of backwards define. */
|
||
if (strncmp (&seq[i], "C-\\M-", 5) == 0)
|
||
{
|
||
array[l++] = ESC;
|
||
i += 5;
|
||
array[l++] = CTRL (to_upper (seq[i]));
|
||
if (!seq[i])
|
||
i--;
|
||
continue;
|
||
}
|
||
|
||
switch (c)
|
||
{
|
||
case 'M':
|
||
i++;
|
||
array[l++] = ESC;
|
||
break;
|
||
|
||
case 'C':
|
||
i += 2;
|
||
array[l++] = CTRL (to_upper (seq[i]));
|
||
break;
|
||
|
||
case 'e':
|
||
array[l++] = ESC;
|
||
}
|
||
|
||
continue;
|
||
}
|
||
}
|
||
array[l++] = c;
|
||
}
|
||
|
||
*len = l;
|
||
array[l] = '\0';
|
||
return (0);
|
||
}
|
||
|
||
/* Return a pointer to the function that STRING represents.
|
||
If STRING doesn't have a matching function, then a NULL pointer
|
||
is returned. */
|
||
Function *
|
||
rl_named_function (string)
|
||
char *string;
|
||
{
|
||
register int i;
|
||
|
||
for (i = 0; funmap[i]; i++)
|
||
if (stricmp (funmap[i]->name, string) == 0)
|
||
return (funmap[i]->function);
|
||
return ((Function *)NULL);
|
||
}
|
||
|
||
/* The last key bindings file read. */
|
||
static char *last_readline_init_file = "~/.inputrc";
|
||
|
||
/* Re-read the current keybindings file. */
|
||
rl_re_read_init_file (count, ignore)
|
||
int count, ignore;
|
||
{
|
||
rl_read_init_file (last_readline_init_file);
|
||
}
|
||
|
||
/* Do key bindings from a file. If FILENAME is NULL it defaults
|
||
to `~/.inputrc'. If the file existed and could be opened and
|
||
read, 0 is returned, otherwise errno is returned. */
|
||
int
|
||
rl_read_init_file (filename)
|
||
char *filename;
|
||
{
|
||
extern int errno;
|
||
int line_size, line_index;
|
||
char *line = (char *)xmalloc (line_size = 100);
|
||
char *openname;
|
||
FILE *file;
|
||
|
||
int c;
|
||
|
||
/* Default the filename. */
|
||
if (!filename)
|
||
filename = "~/.inputrc";
|
||
|
||
openname = tilde_expand (filename);
|
||
|
||
/* Open the file. */
|
||
file = fopen (openname, "r");
|
||
free (openname);
|
||
|
||
if (!file)
|
||
return (errno);
|
||
|
||
last_readline_init_file = filename;
|
||
|
||
/* Loop reading lines from the file. Lines that start with `#' are
|
||
comments, all other lines are commands for readline initialization. */
|
||
while ((c = rl_getc (file)) != EOF)
|
||
{
|
||
/* If comment, flush to EOL. */
|
||
if (c == '#')
|
||
{
|
||
while ((c = rl_getc (file)) != EOF && c != '\n');
|
||
if (c == EOF)
|
||
goto function_exit;
|
||
continue;
|
||
}
|
||
|
||
/* Otherwise, this is the start of a line. Read the
|
||
line from the file. */
|
||
line_index = 0;
|
||
while (c != EOF && c != '\n')
|
||
{
|
||
line[line_index++] = c;
|
||
if (line_index == line_size)
|
||
line = (char *)xrealloc (line, line_size += 100);
|
||
c = rl_getc (file);
|
||
}
|
||
line[line_index] = '\0';
|
||
|
||
/* Parse the line. */
|
||
rl_parse_and_bind (line);
|
||
}
|
||
|
||
function_exit:
|
||
|
||
free (line);
|
||
/* Close up the file and exit. */
|
||
fclose (file);
|
||
return (0);
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Parser Directives */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Conditionals. */
|
||
|
||
/* Calling programs set this to have their argv[0]. */
|
||
char *rl_readline_name = "other";
|
||
|
||
/* Stack of previous values of parsing_conditionalized_out. */
|
||
static unsigned char *if_stack = (unsigned char *)NULL;
|
||
static int if_stack_depth = 0;
|
||
static int if_stack_size = 0;
|
||
|
||
/* Push parsing_conditionalized_out, and set parser state based on ARGS. */
|
||
parser_if (args)
|
||
char *args;
|
||
{
|
||
register int i;
|
||
|
||
/* Push parser state. */
|
||
if (if_stack_depth + 1 >= if_stack_size)
|
||
{
|
||
if (!if_stack)
|
||
if_stack = (unsigned char *)xmalloc (if_stack_size = 20);
|
||
else
|
||
if_stack = (unsigned char *)xrealloc (if_stack, if_stack_size += 20);
|
||
}
|
||
if_stack[if_stack_depth++] = parsing_conditionalized_out;
|
||
|
||
/* We only check to see if the first word in ARGS is the same as the
|
||
value stored in rl_readline_name. */
|
||
|
||
/* Isolate first argument. */
|
||
for (i = 0; args[i] && !whitespace (args[i]); i++);
|
||
|
||
if (args[i])
|
||
args[i++] = '\0';
|
||
|
||
if (stricmp (args, rl_readline_name) == 0)
|
||
parsing_conditionalized_out = 0;
|
||
else
|
||
parsing_conditionalized_out = 1;
|
||
}
|
||
|
||
/* Invert the current parser state if there is anything on the stack. */
|
||
parser_else (args)
|
||
char *args;
|
||
{
|
||
if (if_stack_depth)
|
||
parsing_conditionalized_out = !parsing_conditionalized_out;
|
||
else
|
||
{
|
||
/* *** What, no error message? *** */
|
||
}
|
||
}
|
||
|
||
/* Terminate a conditional, popping the value of
|
||
parsing_conditionalized_out from the stack. */
|
||
parser_endif (args)
|
||
char *args;
|
||
{
|
||
if (if_stack_depth)
|
||
parsing_conditionalized_out = if_stack[--if_stack_depth];
|
||
else
|
||
{
|
||
/* *** What, no error message? *** */
|
||
}
|
||
}
|
||
|
||
/* Associate textual names with actual functions. */
|
||
static struct {
|
||
char *name;
|
||
Function *function;
|
||
} parser_directives [] = {
|
||
{ "if", parser_if },
|
||
{ "endif", parser_endif },
|
||
{ "else", parser_else },
|
||
{ (char *)0x0, (Function *)0x0 }
|
||
};
|
||
|
||
/* Handle a parser directive. STATEMENT is the line of the directive
|
||
without any leading `$'. */
|
||
static int
|
||
handle_parser_directive (statement)
|
||
char *statement;
|
||
{
|
||
register int i;
|
||
char *directive, *args;
|
||
|
||
/* Isolate the actual directive. */
|
||
|
||
/* Skip whitespace. */
|
||
for (i = 0; whitespace (statement[i]); i++);
|
||
|
||
directive = &statement[i];
|
||
|
||
for (; statement[i] && !whitespace (statement[i]); i++);
|
||
|
||
if (statement[i])
|
||
statement[i++] = '\0';
|
||
|
||
for (; statement[i] && whitespace (statement[i]); i++);
|
||
|
||
args = &statement[i];
|
||
|
||
/* Lookup the command, and act on it. */
|
||
for (i = 0; parser_directives[i].name; i++)
|
||
if (stricmp (directive, parser_directives[i].name) == 0)
|
||
{
|
||
(*parser_directives[i].function) (args);
|
||
return (0);
|
||
}
|
||
|
||
/* *** Should an error message be output? */
|
||
return (1);
|
||
}
|
||
|
||
/* Read the binding command from STRING and perform it.
|
||
A key binding command looks like: Keyname: function-name\0,
|
||
a variable binding command looks like: set variable value.
|
||
A new-style keybinding looks like "\C-x\C-x": exchange-point-and-mark. */
|
||
rl_parse_and_bind (string)
|
||
char *string;
|
||
{
|
||
extern char *possible_control_prefixes[], *possible_meta_prefixes[];
|
||
char *rindex (), *funname, *kname;
|
||
static int substring_member_of_array ();
|
||
register int c;
|
||
int key, i;
|
||
|
||
if (!string || !*string || *string == '#')
|
||
return;
|
||
|
||
/* If this is a parser directive, act on it. */
|
||
if (*string == '$')
|
||
{
|
||
handle_parser_directive (&string[1]);
|
||
return;
|
||
}
|
||
|
||
/* If we are supposed to be skipping parsing right now, then do it. */
|
||
if (parsing_conditionalized_out)
|
||
return;
|
||
|
||
i = 0;
|
||
/* If this keyname is a complex key expression surrounded by quotes,
|
||
advance to after the matching close quote. */
|
||
if (*string == '"')
|
||
{
|
||
for (i = 1; c = string[i]; i++)
|
||
{
|
||
if (c == '"' && string[i - 1] != '\\')
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Advance to the colon (:) or whitespace which separates the two objects. */
|
||
for (; (c = string[i]) && c != ':' && c != ' ' && c != '\t'; i++ );
|
||
|
||
/* Mark the end of the command (or keyname). */
|
||
if (string[i])
|
||
string[i++] = '\0';
|
||
|
||
/* If this is a command to set a variable, then do that. */
|
||
if (stricmp (string, "set") == 0)
|
||
{
|
||
char *var = string + i;
|
||
char *value;
|
||
|
||
/* Make VAR point to start of variable name. */
|
||
while (*var && whitespace (*var)) var++;
|
||
|
||
/* Make value point to start of value string. */
|
||
value = var;
|
||
while (*value && !whitespace (*value)) value++;
|
||
if (*value)
|
||
*value++ = '\0';
|
||
while (*value && whitespace (*value)) value++;
|
||
|
||
rl_variable_bind (var, value);
|
||
return;
|
||
}
|
||
|
||
/* Skip any whitespace between keyname and funname. */
|
||
for (; string[i] && whitespace (string[i]); i++);
|
||
funname = &string[i];
|
||
|
||
/* Now isolate funname.
|
||
For straight function names just look for whitespace, since
|
||
that will signify the end of the string. But this could be a
|
||
macro definition. In that case, the string is quoted, so skip
|
||
to the matching delimiter. */
|
||
if (*funname == '\'' || *funname == '"')
|
||
{
|
||
int delimiter = string[i++];
|
||
|
||
for (; c = string[i]; i++)
|
||
{
|
||
if (c == delimiter && string[i - 1] != '\\')
|
||
break;
|
||
}
|
||
if (c)
|
||
i++;
|
||
}
|
||
|
||
/* Advance to the end of the string. */
|
||
for (; string[i] && !whitespace (string[i]); i++);
|
||
|
||
/* No extra whitespace at the end of the string. */
|
||
string[i] = '\0';
|
||
|
||
/* If this is a new-style key-binding, then do the binding with
|
||
rl_set_key (). Otherwise, let the older code deal with it. */
|
||
if (*string == '"')
|
||
{
|
||
char *seq = (char *)alloca (1 + strlen (string));
|
||
register int j, k = 0;
|
||
|
||
for (j = 1; string[j]; j++)
|
||
{
|
||
if (string[j] == '"' && string[j - 1] != '\\')
|
||
break;
|
||
|
||
seq[k++] = string[j];
|
||
}
|
||
seq[k] = '\0';
|
||
|
||
/* Binding macro? */
|
||
if (*funname == '\'' || *funname == '"')
|
||
{
|
||
j = strlen (funname);
|
||
|
||
if (j && funname[j - 1] == *funname)
|
||
funname[j - 1] = '\0';
|
||
|
||
rl_macro_bind (seq, &funname[1], keymap);
|
||
}
|
||
else
|
||
rl_set_key (seq, rl_named_function (funname), keymap);
|
||
|
||
return;
|
||
}
|
||
|
||
/* Get the actual character we want to deal with. */
|
||
kname = rindex (string, '-');
|
||
if (!kname)
|
||
kname = string;
|
||
else
|
||
kname++;
|
||
|
||
key = glean_key_from_name (kname);
|
||
|
||
/* Add in control and meta bits. */
|
||
if (substring_member_of_array (string, possible_control_prefixes))
|
||
key = CTRL (to_upper (key));
|
||
|
||
if (substring_member_of_array (string, possible_meta_prefixes))
|
||
key = META (key);
|
||
|
||
/* Temporary. Handle old-style keyname with macro-binding. */
|
||
if (*funname == '\'' || *funname == '"')
|
||
{
|
||
char seq[2];
|
||
int fl = strlen (funname);
|
||
|
||
seq[0] = key; seq[1] = '\0';
|
||
if (fl && funname[fl - 1] == *funname)
|
||
funname[fl - 1] = '\0';
|
||
|
||
rl_macro_bind (seq, &funname[1], keymap);
|
||
}
|
||
else
|
||
rl_bind_key (key, rl_named_function (funname));
|
||
}
|
||
|
||
rl_variable_bind (name, value)
|
||
char *name, *value;
|
||
{
|
||
if (stricmp (name, "editing-mode") == 0)
|
||
{
|
||
if (strnicmp (value, "vi", 2) == 0)
|
||
{
|
||
#ifdef VI_MODE
|
||
keymap = vi_insertion_keymap;
|
||
rl_editing_mode = vi_mode;
|
||
#endif /* VI_MODE */
|
||
}
|
||
else if (strnicmp (value, "emacs", 5) == 0)
|
||
{
|
||
keymap = emacs_standard_keymap;
|
||
rl_editing_mode = emacs_mode;
|
||
}
|
||
}
|
||
else if (stricmp (name, "horizontal-scroll-mode") == 0)
|
||
{
|
||
if (!*value || stricmp (value, "On") == 0)
|
||
horizontal_scroll_mode = 1;
|
||
else
|
||
horizontal_scroll_mode = 0;
|
||
}
|
||
else if (stricmp (name, "mark-modified-lines") == 0)
|
||
{
|
||
if (!*value || stricmp (value, "On") == 0)
|
||
mark_modified_lines = 1;
|
||
else
|
||
mark_modified_lines = 0;
|
||
}
|
||
}
|
||
|
||
/* Return the character which matches NAME.
|
||
For example, `Space' returns ' '. */
|
||
|
||
typedef struct {
|
||
char *name;
|
||
int value;
|
||
} assoc_list;
|
||
|
||
assoc_list name_key_alist[] = {
|
||
{ "Space", ' ' },
|
||
{ "SPC", ' ' },
|
||
{ "Rubout", 0x7f },
|
||
{ "DEL", 0x7f },
|
||
{ "Tab", 0x09 },
|
||
{ "Newline", '\n' },
|
||
{ "Return", '\r' },
|
||
{ "RET", '\r' },
|
||
{ "LFD", '\n' },
|
||
{ "Escape", '\033' },
|
||
{ "ESC", '\033' },
|
||
|
||
{ (char *)0x0, 0 }
|
||
};
|
||
|
||
int
|
||
glean_key_from_name (name)
|
||
char *name;
|
||
{
|
||
register int i;
|
||
|
||
for (i = 0; name_key_alist[i].name; i++)
|
||
if (stricmp (name, name_key_alist[i].name) == 0)
|
||
return (name_key_alist[i].value);
|
||
|
||
return (*name);
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* String Utility Functions */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Return non-zero if any members of ARRAY are a substring in STRING. */
|
||
static int
|
||
substring_member_of_array (string, array)
|
||
char *string, **array;
|
||
{
|
||
static char *strindex ();
|
||
|
||
while (*array)
|
||
{
|
||
if (strindex (string, *array))
|
||
return (1);
|
||
array++;
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
/* Whoops, Unix doesn't have strnicmp. */
|
||
|
||
/* Compare at most COUNT characters from string1 to string2. Case
|
||
doesn't matter. */
|
||
static int
|
||
strnicmp (string1, string2, count)
|
||
char *string1, *string2;
|
||
{
|
||
register char ch1, ch2;
|
||
|
||
while (count)
|
||
{
|
||
ch1 = *string1++;
|
||
ch2 = *string2++;
|
||
if (to_upper(ch1) == to_upper(ch2))
|
||
count--;
|
||
else break;
|
||
}
|
||
return (count);
|
||
}
|
||
|
||
/* strcmp (), but caseless. */
|
||
static int
|
||
stricmp (string1, string2)
|
||
char *string1, *string2;
|
||
{
|
||
register char ch1, ch2;
|
||
|
||
while (*string1 && *string2)
|
||
{
|
||
ch1 = *string1++;
|
||
ch2 = *string2++;
|
||
if (to_upper(ch1) != to_upper(ch2))
|
||
return (1);
|
||
}
|
||
return (*string1 | *string2);
|
||
}
|
||
|
||
/* Determine if s2 occurs in s1. If so, return a pointer to the
|
||
match in s1. The compare is case insensitive. */
|
||
static char *
|
||
strindex (s1, s2)
|
||
register char *s1, *s2;
|
||
{
|
||
register int i, l = strlen (s2);
|
||
register int len = strlen (s1);
|
||
|
||
for (i = 0; (len - i) >= l; i++)
|
||
if (strnicmp (&s1[i], s2, l) == 0)
|
||
return (s1 + i);
|
||
return ((char *)NULL);
|
||
}
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* SYSV Support */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Since system V reads input differently than we do, I have to
|
||
make a special version of getc for that. */
|
||
|
||
#ifdef SYSV
|
||
|
||
extern int errno;
|
||
#include <sys/errno.h>
|
||
|
||
int
|
||
rl_getc (stream)
|
||
FILE *stream;
|
||
{
|
||
int result;
|
||
unsigned char c;
|
||
|
||
while (1)
|
||
{
|
||
result = read (fileno (stream), &c, sizeof (char));
|
||
if (result == sizeof (char))
|
||
return (c);
|
||
|
||
if (errno != EINTR)
|
||
return (EOF);
|
||
}
|
||
}
|
||
#else
|
||
int
|
||
rl_getc (stream)
|
||
FILE *stream;
|
||
{
|
||
return (getc (stream));
|
||
}
|
||
#endif
|
||
|
||
#ifdef STATIC_MALLOC
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* xmalloc and xrealloc () */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
static void memory_error_and_abort ();
|
||
|
||
static char *
|
||
xmalloc (bytes)
|
||
int bytes;
|
||
{
|
||
char *temp = (char *)malloc (bytes);
|
||
|
||
if (!temp)
|
||
memory_error_and_abort ();
|
||
return (temp);
|
||
}
|
||
|
||
static char *
|
||
xrealloc (pointer, bytes)
|
||
char *pointer;
|
||
int bytes;
|
||
{
|
||
char *temp = (char *)realloc (pointer, bytes);
|
||
|
||
if (!temp)
|
||
memory_error_and_abort ();
|
||
return (temp);
|
||
}
|
||
|
||
static void
|
||
memory_error_and_abort ()
|
||
{
|
||
fprintf (stderr, "readline: Out of virtual memory!\n");
|
||
abort ();
|
||
}
|
||
#endif /* STATIC_MALLOC */
|
||
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Testing Readline */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
#ifdef TEST
|
||
|
||
main ()
|
||
{
|
||
HIST_ENTRY **history_list ();
|
||
char *temp = (char *)NULL;
|
||
char *prompt = "readline% ";
|
||
int done = 0;
|
||
|
||
while (!done)
|
||
{
|
||
temp = readline (prompt);
|
||
|
||
/* Test for EOF. */
|
||
if (!temp)
|
||
exit (1);
|
||
|
||
/* If there is anything on the line, print it and remember it. */
|
||
if (*temp)
|
||
{
|
||
fprintf (stderr, "%s\r\n", temp);
|
||
add_history (temp);
|
||
}
|
||
|
||
/* Check for `command' that we handle. */
|
||
if (strcmp (temp, "quit") == 0)
|
||
done = 1;
|
||
|
||
if (strcmp (temp, "list") == 0) {
|
||
HIST_ENTRY **list = history_list ();
|
||
register int i;
|
||
if (list) {
|
||
for (i = 0; list[i]; i++) {
|
||
fprintf (stderr, "%d: %s\r\n", i, list[i]->line);
|
||
free (list[i]->line);
|
||
}
|
||
free (list);
|
||
}
|
||
}
|
||
free (temp);
|
||
}
|
||
}
|
||
|
||
#endif /* TEST */
|
||
|
||
|
||
/*
|
||
* Local variables:
|
||
* compile-command: "gcc -g -traditional -I. -I.. -DTEST -o readline readline.c keymaps.o funmap.o history.o -ltermcap"
|
||
* end:
|
||
*/
|