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radare2/libr/cons/dietline.c

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/* radare - LGPL - Copyright 2007-2018 - pancake */
/* dietline is a lightweight and portable library similar to GNU readline */
#include <r_cons.h>
#include <r_core.h>
#include <string.h>
#include <stdlib.h>
#if __WINDOWS__ && !__CYGWIN__
#include <windows.h>
#define USE_UTF8 0
#else
#include <sys/ioctl.h>
#include <termios.h>
#include <signal.h>
#define USE_UTF8 1
#endif
static char *r_line_nullstr = "";
static const char word_break_characters[] = "\t\n ~`!@#$%^&*()-_=+[]{}\\|;:\"'<>,./";
static inline bool is_word_break_char(char ch) {
int i;
int len =
sizeof (word_break_characters) /
sizeof (word_break_characters[0]);
for (i = 0; i < len; ++i) {
if (ch == word_break_characters[i]) {
return true;
}
}
return false;
}
/* https://www.gnu.org/software/bash/manual/html_node/Commands-For-Killing.html */
static void backward_kill_word() {
int i, len;
if (I.buffer.index > 0) {
for (i = I.buffer.index - 1; i > 0 && is_word_break_char (I.buffer.data[i]); i--) {
/* Move the cursor index back until we hit a non-word-break-character */
}
for (; i > 0 && !is_word_break_char (I.buffer.data[i]); i--) {
/* Move the cursor index back until we hit a word-break-character */
}
if (i > 0) {
i++;
} else if (i < 0) {
i = 0;
}
if (I.buffer.index > I.buffer.length) {
I.buffer.length = I.buffer.index;
}
len = I.buffer.index - i + 1;
free (I.clipboard);
I.clipboard = r_str_ndup (I.buffer.data + i, len);
memmove (I.buffer.data + i, I.buffer.data + I.buffer.index,
I.buffer.length - I.buffer.index + 1);
I.buffer.length = strlen (I.buffer.data);
I.buffer.index = i;
}
}
static void kill_word() {
int i, len;
for (i = I.buffer.index + 1; i < I.buffer.length && is_word_break_char (I.buffer.data[i]); i++) {
/* Move the cursor index forward until we hit a non-word-break-character */
}
for (; i < I.buffer.length && !is_word_break_char (I.buffer.data[i]); i++) {
/* Move the cursor index forward we hit a word-break-character */
}
if (I.buffer.index >= I.buffer.length) {
I.buffer.length = I.buffer.index;
}
len = i - I.buffer.index + 1;
free (I.clipboard);
I.clipboard = r_str_ndup (I.buffer.data + I.buffer.index, len);
memmove (I.buffer.data + I.buffer.index, I.buffer.data + i, len);
I.buffer.length = strlen (I.buffer.data);
}
static void paste() {
if (I.clipboard) {
char *cursor = I.buffer.data + I.buffer.index;
int dist = (I.buffer.data + I.buffer.length) - cursor;
int len = strlen (I.clipboard);
I.buffer.length += len;
memmove (cursor + len, cursor, dist);
memcpy (cursor, I.clipboard, len);
I.buffer.index += len;
}
}
static void unix_word_rubout() {
int i;
if (I.buffer.index > 0) {
for (i = I.buffer.index - 1; i > 0 && I.buffer.data[i] == ' '; i--) {
/* Move cursor backwards until we hit a non-space character or EOL */
/* This removes any trailing spaces from the input */
}
for (; i > 0 && I.buffer.data[i] != ' '; i--) {
/* Move cursor backwards until we hit a space character or EOL */
/* This deletes everything back to the previous space character */
}
if (i > 0) {
i++;
} else if (i < 0) {
i = 0;
}
if (I.buffer.index > I.buffer.length) {
I.buffer.length = I.buffer.index;
}
memmove (I.buffer.data + i,
I.buffer.data + I.buffer.index,
I.buffer.length - I.buffer.index + 1);
I.buffer.length = strlen (I.buffer.data);
I.buffer.index = i;
}
}
static int inithist() {
ZERO_FILL (I.history);
if ((I.history.size + 1024) * sizeof (char *) < I.history.size) {
return false;
}
I.history.data = (char **) calloc ((I.history.size + 1024), sizeof(char *));
if (!I.history.data) {
return false;
}
I.history.size = R_LINE_HISTSIZE;
return true;
}
/* initialize history stuff */
R_API int r_line_dietline_init() {
ZERO_FILL (I.completion);
if (!inithist ()) {
return false;
}
I.echo = true;
return true;
}
#if USE_UTF8
/* read utf8 char into 's', return the length in bytes */
static int r_line_readchar_utf8(ut8 *s, int slen) {
// TODO: add support for w32
ssize_t len, i;
if (slen < 1) {
return 0;
}
int ch = r_cons_readchar ();
if (ch == -1) {
return -1;
}
*s = ch;
#if 0
if ((t = read (0, s, 1)) != 1) {
return t;
}
#endif
*s = r_cons_controlz (*s);
if (*s < 0x80) {
len = 1;
} else if ((s[0] & 0xe0) == 0xc0) {
len = 2;
} else if ((s[0] & 0xf0) == 0xe0) {
len = 3;
} else if ((s[0] & 0xf8) == 0xf0) {
len = 4;
} else {
return -1;
}
if (len > slen) {
return -1;
}
for (i = 1; i < len; i++) {
int ch = r_cons_readchar ();
if (ch != -1) {
s[i] = ch;
}
if ((s[i] & 0xc0) != 0x80) {
return -1;
}
}
return len;
}
#endif
#if __WINDOWS__ && !__CYGWIN__
static int r_line_readchar_win(int *vch) { // this function handle the input in console mode
INPUT_RECORD irInBuf;
BOOL ret, bCtrl = FALSE;
DWORD mode, out;
ut8 buf[2];
HANDLE h;
int i;
void *bed;
if (I.zerosep) {
*vch = 0;
buf[0] = 0;
bed = r_cons_sleep_begin ();
int rsz = read (0, buf, 1);
r_cons_sleep_end (bed);
if (rsz != 1)
return -1;
return buf[0];
}
*buf = '\0';
h = GetStdHandle (STD_INPUT_HANDLE);
GetConsoleMode (h, &mode);
SetConsoleMode (h, 0); // RAW
do_it_again:
*vch = 0;
bed = r_cons_sleep_begin ();
ret = ReadConsoleInput (h, &irInBuf, 1, &out);
r_cons_sleep_end (bed);
if (ret < 1) {
return 0;
}
if (irInBuf.EventType == KEY_EVENT) {
if (irInBuf.Event.KeyEvent.bKeyDown) {
if (irInBuf.Event.KeyEvent.uChar.AsciiChar) {
*buf = irInBuf.Event.KeyEvent.uChar.AsciiChar;
bCtrl = irInBuf.Event.KeyEvent.dwControlKeyState & 8;
}
else {
switch (irInBuf.Event.KeyEvent.wVirtualKeyCode) {
case VK_DOWN: *vch = bCtrl ? 140 : 40; break;
case VK_UP: *vch = bCtrl ? 138 : 38; break;
case VK_RIGHT: *vch = bCtrl ? 139 : 39; break;
case VK_LEFT: *vch = bCtrl ? 137 : 37; break;
case VK_DELETE: *vch = bCtrl ? 146 : 46; break; // SUPR KEY
case VK_HOME: *vch = bCtrl ? 136 : 36; break; // HOME KEY
case VK_END: *vch = bCtrl ? 135 : 35; break; // END KEY
default: *vch = *buf = 0; break;
}
}
}
}
if (buf[0] == 0 && *vch == 0) {
goto do_it_again;
}
SetConsoleMode (h, mode);
return buf[0];
}
#endif
R_API int r_line_set_hist_callback(RLine *line, RLineHistoryUpCb up, RLineHistoryDownCb down) {
line->cb_history_up = up;
line->cb_history_down = down;
line->offset_hist_index = 0;
line->file_hist_index = 0;
line->sdbshell_hist_iter = r_list_head (line->sdbshell_hist);
return 1;
}
R_API int cmd_history_up(RLine *line) {
if (line->hist_up) {
return line->hist_up (line->user);
}
if (!line->history.data) {
inithist ();
}
if (line->history.index > 0 && line->history.data) {
strncpy (line->buffer.data, line->history.data[--line->history.index], R_LINE_BUFSIZE - 1);
line->buffer.index = line->buffer.length = strlen (line->buffer.data);
return true;
}
return false;
}
R_API int cmd_history_down(RLine *line) {
if (line->hist_down) {
return line->hist_down (line->user);
}
line->buffer.index = 0;
if (!line->history.data) {
inithist ();
}
if (line->history.index == line->history.top) {
return false;
}
line->history.index++;
if (line->history.index == line->history.top) {
line->buffer.data[0] = '\0';
line->buffer.index = line->buffer.length = 0;
return false;
}
if (line->history.data && line->history.data[line->history.index]) {
strncpy (line->buffer.data, line->history.data[line->history.index], R_LINE_BUFSIZE - 1);
line->buffer.index = line->buffer.length = strlen (line->buffer.data);
}
return true;
}
R_API int r_line_hist_add(const char *line) {
if (!line || !*line) {
return false;
}
if (!I.history.data) {
inithist ();
}
/* ignore dup */
if (I.history.top > 0) {
const char *data = I.history.data[I.history.top - 1];
if (data && !strcmp (line, data)) {
I.history.index = I.history.top;
return false;
}
}
if (I.history.top == I.history.size) {
int i;
free (I.history.data[0]);
for (i = 0; i <= I.history.size - 2; i++) {
I.history.data[i] = I.history.data[i + 1];
}
I.history.top--;
}
I.history.data[I.history.top++] = strdup (line);
I.history.index = I.history.top;
return true;
}
static int r_line_hist_up() {
if (!I.cb_history_up) {
r_line_set_hist_callback (&I, &cmd_history_up, &cmd_history_down);
}
return I.cb_history_up (&I);
}
static int r_line_hist_down() {
if (!I.cb_history_down) {
r_line_set_hist_callback (&I, &cmd_history_up, &cmd_history_down);
}
return I.cb_history_down (&I);
}
R_API const char *r_line_hist_get(int n) {
int i = 0;
if (!I.history.data) {
inithist ();
}
n--;
if (I.history.data) {
for (i = 0; i < I.history.size && I.history.data[i]; i++) {
if (n == i) {
return I.history.data[i];
}
}
}
return NULL;
}
R_API int r_line_hist_list() {
int i = 0;
if (!I.history.data) {
inithist ();
}
if (I.history.data) {
for (i = 0; i < I.history.size && I.history.data[i]; i++) {
const char *pad = r_str_pad (' ', 32 - strlen (I.history.data[i]));
r_cons_printf ("%s %s # !%d\n", I.history.data[i], pad, i);
}
}
return i;
}
R_API void r_line_hist_free() {
int i;
if (I.history.data) {
for (i = 0; i < I.history.size; i++) {
R_FREE (I.history.data[i]);
}
}
R_FREE (I.history.data);
R_FREE (I.sdbshell_hist);
I.history.index = 0;
}
/* load history from file. TODO: if file == NULL load from ~/.<prg>.history or so */
R_API int r_line_hist_load(const char *file) {
FILE *fd;
char buf[R_LINE_BUFSIZE], *path = r_str_home (file);
if (!path) {
return false;
}
if (!(fd = fopen (path, "r"))) {
free (path);
return false;
}
while (fgets (buf, sizeof (buf), fd) != NULL) {
buf[strlen (buf) - 1] = 0;
r_line_hist_add (buf);
}
fclose (fd);
free (path);
return true;
}
R_API int r_line_hist_save(const char *file) {
FILE *fd;
int i, ret = false;
if (!file || !*file) {
return false;
}
char *p, *path = r_str_home (file);
if (path != NULL) {
p = (char *) r_str_lastbut (path, R_SYS_DIR[0], NULL); // TODO: use fs
if (p) {
*p = 0;
if (!r_sys_mkdirp (path)) {
eprintf ("could not save history into %s\n", path);
goto end;
}
*p = R_SYS_DIR[0];
}
fd = fopen (path, "w");
if (fd != NULL) {
if (I.history.data) {
for (i = 0; i < I.history.index; i++) {
fputs (I.history.data[i], fd);
fputs ("\n", fd);
}
fclose (fd);
ret = true;
} else {
fclose (fd);
}
}
}
end:
free (path);
return ret;
}
R_API int r_line_hist_chop(const char *file, int limit) {
/* TODO */
return 0;
}
static void selection_widget_draw() {
RCons *cons = r_cons_singleton ();
RSelWidget *sel_widget = I.sel_widget;
int y, pos_y = cons->rows, pos_x = r_str_ansi_len (I.prompt);
for (y = 0; y < sel_widget->options_len; y++) {
sel_widget->w = R_MAX (sel_widget->w, strlen (sel_widget->options[y]));
}
sel_widget->w = R_MIN (sel_widget->w, R_SELWIDGET_MAXW);
char *background_color = cons->color ? cons->pal.widget_bg : Color_INVERT_RESET;
char *selected_color = cons->color ? cons->pal.widget_sel : Color_INVERT;
bool scrollbar = sel_widget->options_len > R_SELWIDGET_MAXH;
int scrollbar_y = 0, scrollbar_l = 0;
if (scrollbar) {
scrollbar_y = (R_SELWIDGET_MAXH * (sel_widget->selection - sel_widget->scroll)) / sel_widget->options_len;
scrollbar_l = (R_SELWIDGET_MAXH * R_SELWIDGET_MAXH) / sel_widget->options_len;
}
for (y = 0; y < R_MIN (sel_widget->h, R_SELWIDGET_MAXH); y++) {
r_cons_gotoxy (pos_x + 1, pos_y - y - 1);
int scroll = R_MAX (0, sel_widget->selection - sel_widget->scroll);
const char *option = y < sel_widget->options_len ? sel_widget->options[y + scroll] : "";
r_cons_printf ("%s", sel_widget->selection == y + scroll ? selected_color : background_color);
r_cons_printf ("%-*.*s", sel_widget->w, sel_widget->w, option);
if (scrollbar && R_BETWEEN (scrollbar_y, y, scrollbar_y + scrollbar_l)) {
r_cons_memcat (Color_INVERT" "Color_INVERT_RESET, 10);
} else {
r_cons_memcat (" ", 1);
}
}
r_cons_gotoxy (pos_x + I.buffer.length, pos_y);
r_cons_memcat (Color_RESET_BG, 5);
r_cons_flush ();
}
static void selection_widget_up(int steps) {
RSelWidget *sel_widget = I.sel_widget;
if (sel_widget) {
int height = R_MIN (sel_widget->h, R_SELWIDGET_MAXH - 1);
sel_widget->selection = R_MIN (sel_widget->selection + steps, sel_widget->options_len - 1);
if (steps == 1) {
sel_widget->scroll = R_MIN (sel_widget->scroll + 1, R_SELWIDGET_MAXH - 1);
} else if (sel_widget->selection + (height - sel_widget->scroll) > sel_widget->options_len - 1) {
sel_widget->scroll = height - (sel_widget->options_len - 1 - sel_widget->selection);
}
}
}
static void selection_widget_down(int steps) {
RSelWidget *sel_widget = I.sel_widget;
if (sel_widget) {
sel_widget->selection = R_MAX (sel_widget->selection - steps, 0);
if (steps == 1) {
sel_widget->scroll = R_MAX (sel_widget->scroll - 1, 0);
} else if (sel_widget->selection - sel_widget->scroll <= 0) {
sel_widget->scroll = sel_widget->selection;
}
}
}
static void print_rline_task(void *core) {
r_cons_clear_line (0);
r_cons_printf ("%s%s%s", Color_RESET, I.prompt, I.buffer.data);
r_cons_flush ();
}
static void selection_widget_erase() {
RSelWidget *sel_widget = I.sel_widget;
if (sel_widget) {
sel_widget->options_len = 0;
sel_widget->selection = -1;
selection_widget_draw ();
R_FREE (I.sel_widget);
RCons *cons = r_cons_singleton ();
if (cons->event_resize && cons->event_data) {
cons->event_resize (cons->event_data);
cons->cb_task_oneshot (cons->user, print_rline_task, NULL);
}
}
}
static void selection_widget_select() {
RSelWidget *sel_widget = I.sel_widget;
if (sel_widget && sel_widget->selection < sel_widget->options_len) {
I.buffer.length = R_MIN (strlen (sel_widget->options[sel_widget->selection]), R_LINE_BUFSIZE - 1);
memcpy (I.buffer.data, sel_widget->options[sel_widget->selection], I.buffer.length);
I.buffer.data[I.buffer.length] = '\0';
I.buffer.index = I.buffer.length;
selection_widget_erase ();
}
}
static void selection_widget_update() {
if (I.completion.argc == 0 ||
(I.completion.argc == 1 && I.buffer.length >= strlen (I.completion.argv[0]))) {
selection_widget_erase ();
return;
}
if (!I.sel_widget) {
RSelWidget *sel_widget = R_NEW0 (RSelWidget);
I.sel_widget = sel_widget;
}
I.sel_widget->scroll = 0;
I.sel_widget->selection = 0;
I.sel_widget->options_len = I.completion.argc;
I.sel_widget->options = I.completion.argv;
I.sel_widget->h = R_MAX (I.sel_widget->h, I.completion.argc);
selection_widget_draw ();
r_cons_flush ();
return;
}
R_API void r_line_autocomplete() {
char *p;
const char **argv = NULL;
int argc = 0, i, j, plen, len = 0;
bool opt = false;
int cols = (int)(r_cons_get_size (NULL) * 0.82);
/* prepare argc and argv */
if (I.completion.run) {
I.completion.opt = false;
I.completion.run (&I);
argc = I.completion.argc;
argv = I.completion.argv;
opt = I.completion.opt;
}
if (I.sel_widget && !I.sel_widget->complete_common) {
selection_widget_update ();
return;
}
if (opt) {
p = (char *) r_sub_str_lchr (I.buffer.data, 0, I.buffer.index, '=');
} else {
p = (char *) r_sub_str_lchr (I.buffer.data, 0, I.buffer.index, ' ');
}
if (!p) {
p = (char *) r_sub_str_lchr (I.buffer.data, 0, I.buffer.index, '@'); // HACK FOR r2
}
if (p) {
p++;
plen = sizeof (I.buffer.data) - (int) (size_t) (p - I.buffer.data);
} else {
p = I.buffer.data; // XXX: removes current buffer
plen = sizeof (I.buffer.data);
}
/* autocomplete */
if (argc == 1) {
const char *end_word = r_sub_str_rchr (I.buffer.data,
I.buffer.index, strlen (I.buffer.data), ' ');
const char *t = end_word != NULL?
end_word: I.buffer.data + I.buffer.index;
int largv0 = strlen (argv[0]? argv[0]: "");
size_t len_t = strlen (t);
p[largv0]='\0';
if ((p - I.buffer.data) + largv0 + 1 + len_t < plen) {
if (len_t > 0) {
int tt = largv0;
if (*t != ' ') {
p[tt++] = ' ';
}
memmove (p + tt, t, len_t);
}
memcpy (p, argv[0], largv0);
if (p[largv0 - 1] != '/') {
p[largv0] = ' ';
if (!len_t) {
p[largv0 + 1] = '\0';
}
}
I.buffer.length = strlen (I.buffer.data);
I.buffer.index = I.buffer.length;
}
} else if (argc > 0) {
if (*p) {
// TODO: avoid overflow
const char *t = I.buffer.data + I.buffer.index;
const char *root = argv[0];
int min_common_len = strlen (root);
size_t len_t = strlen (t);
// try to autocomplete argument
for (i = 0; i < argc; i++) {
j = 0;
if (!argv[i]) {
break;
}
while (argv[i][j] == root[j] && root[j] != '\0') j++;
if (j < min_common_len) {
min_common_len = j;
}
root = argv[i];
}
if (len_t > 0) {
int tt = min_common_len;
memmove (p + tt, t, len_t);
p[tt + len_t] = '\0';
}
memmove (p, root, min_common_len);
if (!len_t) {
p[min_common_len] = '\0';
}
I.buffer.length = strlen (I.buffer.data);
I.buffer.index = (p - I.buffer.data) + min_common_len;
}
}
if (I.offset_prompt || I.file_prompt) {
selection_widget_update ();
if (I.sel_widget) {
I.sel_widget->complete_common = false;
}
return;
}
/* show options */
if (argc > 1 && I.echo) {
const int sep = 3;
int slen, col = 10;
printf ("%s%s\n", I.prompt, I.buffer.data);
for (i = 0; i < argc && argv[i]; i++) {
int l = strlen (argv[i]);
if (sep + l > col) {
col = sep + l;
}
if (col > (cols >> 1)) {
col = (cols >> 1);
break;
}
}
for (len = i = 0; i < argc && argv[i]; i++) {
if (len + col > cols) {
printf ("\n");
len = 0;
}
printf ("%-*s ", col - sep, argv[i]);
slen = strlen (argv[i]);
len += (slen > col)? (slen + sep): (col + sep);
}
printf ("\n");
}
fflush (stdout);
}
R_API const char *r_line_readline() {
return r_line_readline_cb (NULL, NULL);
}
#if __WINDOWS__ && !__CYGWIN__
R_API const char *r_line_readline_cb_win(RLineReadCallback cb, void *user) {
int columns = r_cons_get_size (NULL) - 2;
const char *gcomp_line = "";
static int gcomp_idx = 0;
static int gcomp = 0;
signed char buf[10];
int ch, i = 0; /* grep completion */
int vch = 0;
char *tmp_ed_cmd, prev = 0;
HANDLE hClipBoard;
char *clipText;
int prev_buflen = 0;
I.buffer.index = I.buffer.length = 0;
I.buffer.data[0] = '\0';
if (I.contents) {
memmove (I.buffer.data, I.contents,
R_MIN (strlen (I.contents) + 1, R_LINE_BUFSIZE - 1));
I.buffer.data[R_LINE_BUFSIZE - 1] = '\0';
I.buffer.index = I.buffer.length = strlen (I.contents);
}
if (I.disable) {
if (!fgets (I.buffer.data, R_LINE_BUFSIZE - 1, stdin)) {
return NULL;
}
I.buffer.data[strlen (I.buffer.data)] = '\0';
return (*I.buffer.data)? I.buffer.data: r_line_nullstr;
}
memset (&buf, 0, sizeof buf);
r_cons_set_raw (1);
if (I.echo) {
if (I.ansicon) {
printf ("\r%s", R_CONS_CLEAR_LINE);
printf ("%s%s%s", Color_RESET, I.prompt, I.buffer.data);
} else {
r_cons_clear_line (0);
printf ("%s%s", I.prompt, I.buffer.data);
}
fflush (stdout);
}
r_cons_break_push (NULL, NULL);
for (;;) {
I.buffer.data[I.buffer.length] = '\0';
if (cb && !cb (user, I.buffer.data)) {
I.buffer.data[0] = 0;
I.buffer.length = 0;
}
ch = r_line_readchar_win (&vch);
if (ch == -1) {
r_cons_break_pop ();
return NULL;
}
buf[0] = ch;
if (I.echo) {
if (I.ansicon) {
printf ("\r%s", R_CONS_CLEAR_LINE);
} else {
r_cons_clear_line (0);
}
}
/* process special at vch codes first*/
switch (vch) {
case 37: // left arrow
I.buffer.index = I.buffer.index? I.buffer.index - 1: 0;
break;
case 38: // up arrow
if (I.sel_widget) {
selection_widget_up (1);
selection_widget_draw ();
} else if (gcomp) {
gcomp_idx++;
} else if (r_line_hist_up () == -1) {
r_cons_break_pop ();
return NULL;
}
break;
case 39:// right arrow
I.buffer.index = I.buffer.index < I.buffer.length?
I.buffer.index + 1: I.buffer.length;
break;
case 40:// down arrow
if (I.sel_widget) {
selection_widget_up (1);
selection_widget_draw ();
} else if (gcomp) {
if (gcomp_idx > 0) {
gcomp_idx--;
}
} else if (r_line_hist_down () == -1) {
r_cons_break_pop ();
return NULL;
}
break;
/* ctrl+arrows */
case 137:// ctrl+left arrow
// previous word
for (i = I.buffer.index; i > 0; i--) {
if (I.buffer.data[i] == ' ') {
I.buffer.index = i - 1;
break;
}
}
if (I.buffer.data[i] != ' ') {
I.buffer.index = 0;
}
break;
case 138:// ctrl+up arrow
// first
I.buffer.index = 0;
break;
case 139:// ctrl+right arrow
// next word
for (i = I.buffer.index; i < I.buffer.length; i++) {
if (I.buffer.data[i] == ' ') {
I.buffer.index = i + 1;
break;
}
}
if (I.buffer.data[i] != ' ') {
I.buffer.index = I.buffer.length;
}
break;
case 140:// ctrl+down arrow
// end
I.buffer.index = I.buffer.length;
break;
case 36:// HOME
I.buffer.index = 0;
break;
case 35:// END
I.buffer.index = I.buffer.length;
break;
/*case 0x37: // HOME xrvt-unicode
// r_cons_readchar ();
case 0x38: // END xrvt-unicode
// r_cons_readchar ();*/
case 46:// supr
if (I.buffer.index < I.buffer.length) {
memmove (I.buffer.data + I.buffer.index,
I.buffer.data + I.buffer.index + 1,
strlen (I.buffer.data + I.buffer.index + 1) + 1);
}
if (buf[1] == -1) {
r_cons_break_pop ();
return NULL;
}
break;
default:
break;
}
vch = 0;
switch (*buf) {
// case -1: // ^D
// return NULL;
case 0: // no key must by handle by the code up
// ignore
break;
case 1: // ^A
I.buffer.index = 0;
break;
case 2: // ^b // emacs left
I.buffer.index = I.buffer.index? I.buffer.index - 1: 0;
break;
case 5: // ^E
if (prev == 24) { // ^X = 0x18
I.buffer.data[I.buffer.length] = 0; // probably unnecessary
tmp_ed_cmd = I.cb_editor (I.user, I.buffer.data);
if (tmp_ed_cmd) {
/* copied from yank (case 25) */
I.buffer.length = strlen (tmp_ed_cmd);
if (I.buffer.length < R_LINE_BUFSIZE) {
I.buffer.index = I.buffer.length;
strncpy (I.buffer.data, tmp_ed_cmd, R_LINE_BUFSIZE - 1);
I.buffer.data[R_LINE_BUFSIZE - 1] = '\0';
} else {
I.buffer.length -= strlen (tmp_ed_cmd);
}
free (tmp_ed_cmd);
}
} else {
I.buffer.index = I.buffer.length;
}
break;
case 3: // ^C
if (I.echo) {
eprintf ("^C\n");
}
I.buffer.index = I.buffer.length = 0;
*I.buffer.data = '\0';
gcomp = 0;
goto _end;
case 4: // ^D
if (!I.buffer.data[0]) {/* eof */
if (I.echo) {
printf ("^D\n");
}
r_cons_set_raw (false);
r_cons_break_pop ();
return NULL;
}
if (I.buffer.index < I.buffer.length) {
memmove (I.buffer.data + I.buffer.index,
I.buffer.data + I.buffer.index + 1,
strlen (I.buffer.data + I.buffer.index + 1) + 1);
}
break;
case 10:// ^J -- ignore
return I.buffer.data;
case 11:// ^K -- ignore
break;
case 6: // ^f // emacs right
I.buffer.index = I.buffer.index < I.buffer.length
? I.buffer.index + 1
: I.buffer.length;
break;
case 12:// ^L -- right
I.buffer.index = (I.buffer.index < I.buffer.length)
? I.buffer.index + 1
: I.buffer.length;
if (I.echo) {
eprintf ("\x1b[2J\x1b[0;0H");
}
fflush (stdout);
break;
case 18:// ^R -- autocompletion
gcomp = 1;
break;
case 19:// ^S -- backspace
if (gcomp) {
gcomp--;
} else {
I.buffer.index =
I.buffer.index? I.buffer.index - 1: 0;
}
break;
case 21:// ^U - cut
free (I.clipboard);
I.clipboard = strdup (I.buffer.data);
I.buffer.data[0] = '\0';
I.buffer.length = 0;
I.buffer.index = 0;
break;
case 22:// ^V - Paste from windows clipboard
if (OpenClipboard (NULL)) {
hClipBoard = GetClipboardData (CF_TEXT);
if (hClipBoard) {
clipText = GlobalLock (hClipBoard);
if (clipText) {
I.buffer.length += strlen (clipText);
if (I.buffer.length < R_LINE_BUFSIZE) {
I.buffer.index = I.buffer.length;
strcat (I.buffer.data, clipText);
} else {
I.buffer.length -= strlen (I.clipboard);
}
}
GlobalUnlock (hClipBoard);
}
CloseClipboard ();
}
break;
case 23:// ^W ^w
unix_word_rubout ();
break;
case 24:// ^X -- do nothing but store in prev = *buf
break;
case 25:// ^Y - paste
paste ();
break;
case 14:// ^n
if (I.sel_widget) {
selection_widget_down (1);
selection_widget_draw ();
} else if (gcomp) {
if (gcomp_idx > 0) {
gcomp_idx--;
}
} else {
r_line_hist_down ();
}
break;
case 16:// ^p
if (I.sel_widget) {
selection_widget_down (1);
selection_widget_draw ();
} else if (gcomp) {
gcomp_idx++;
} else {
r_line_hist_up ();
}
break;
case 8:
case 127:
if (I.buffer.index < I.buffer.length) {
if (I.buffer.index > 0) {
int len = 0;
// TODO: WIP
len = 1;
I.buffer.index--;
memmove (I.buffer.data + I.buffer.index,
I.buffer.data + I.buffer.index + len,
strlen (I.buffer.data + I.buffer.index));
I.buffer.length -= len;
I.buffer.data[I.buffer.length] = 0;
}
} else {
// OK
I.buffer.index = --I.buffer.length;
if (I.buffer.length < 0) {
I.buffer.length = 0;
}
I.buffer.data[I.buffer.length] = '\0';
}
if (I.buffer.index < 0) {
I.buffer.index = 0;
}
break;
/* tab */
case 9: // tab
if (I.sel_widget) {
I.sel_widget->complete_common = true;
}
r_line_autocomplete ();
break;
/* enter */
case 13:
if (I.sel_widget) {
selection_widget_select ();
break;
}
if (gcomp && I.buffer.length > 0) {
strncpy (I.buffer.data, gcomp_line, R_LINE_BUFSIZE - 1);
I.buffer.data[R_LINE_BUFSIZE - 1] = '\0';
I.buffer.length = strlen (gcomp_line);
}
gcomp_idx = gcomp = 0;
goto _end;
default:
if (gcomp) {
gcomp++;
}
if (I.buffer.index < I.buffer.length) {
for (i = ++I.buffer.length; i > I.buffer.index; i--) {
I.buffer.data[i] = I.buffer.data[i - 1];
}
I.buffer.data[I.buffer.index] = buf[0];
} else {
I.buffer.data[I.buffer.length] = buf[0];
I.buffer.length++;
if (I.buffer.length > (R_LINE_BUFSIZE - 1)) {
I.buffer.length--;
}
I.buffer.data[I.buffer.length] = '\0';
}
I.buffer.index++;
break;
}
if (I.sel_widget && I.buffer.length != prev_buflen) {
prev_buflen = I.buffer.length;
r_line_autocomplete ();
}
prev = buf[0];
if (I.echo) {
if (gcomp) {
gcomp_line = "";
if (I.history.data) {
for (i = 0; i < I.history.size; i++) {
if (!I.history.data[i]) {
break;
}
if (strstr (I.history.data[i], I.buffer.data)) {
gcomp_line = I.history.data[i];
if (!gcomp_idx--) {
break;
}
}
}
}
printf ("\r (reverse-i-search (%s)): %s\r", I.buffer.data, gcomp_line);
} else {
int chars = R_MAX (1, strlen (I.buffer.data)); // wtf?
int len, cols = R_MAX (1, columns - r_str_ansi_len (I.prompt) - 2);
/* print line */
if (I.ansicon) {
printf ("\r%s%s", Color_RESET, I.prompt);
} else {
printf ("\r%s", I.prompt);
}
fwrite (I.buffer.data, 1, R_MIN (cols, chars), stdout);
/* place cursor */
printf ("\r%s", I.prompt);
if (I.buffer.index > cols) {
printf ("< ");
i = I.buffer.index - cols;
if (i > sizeof (I.buffer.data)) {
i = sizeof (I.buffer.data) - 1;
}
} else {
i = 0;
}
len = I.buffer.index - i;
if (len > 0 && (i + len) <= I.buffer.length) {
fwrite (I.buffer.data + i, 1, len, stdout);
}
}
fflush (stdout);
}
}
_end:
r_cons_break_pop ();
r_cons_set_raw (0);
if (I.echo) {
printf ("\r%s%s\n", I.prompt, I.buffer.data);
fflush (stdout);
}
R_FREE (I.sel_widget);
// should be here or not?
if (!memcmp (I.buffer.data, "!history", 8)) {
r_line_hist_list ();
return r_line_nullstr;
}
return I.buffer.data[0] != '\0'? I.buffer.data: r_line_nullstr;
}
#endif
R_API const char *r_line_readline_cb(RLineReadCallback cb, void *user) {
#if __WINDOWS__ && !__CYGWIN__
// new implementation for read input at windows by skuater. If something fail set this to 0
return r_line_readline_cb_win (cb, user);
#endif
int columns = r_cons_get_size (NULL) - 2;
const char *gcomp_line = "";
static int gcomp_idx = 0;
static int gcomp = 0;
signed char buf[10];
#if USE_UTF8
int utflen;
#endif
int ch, i = 0; /* grep completion */
char *tmp_ed_cmd, prev = 0;
int prev_buflen = -1;
I.buffer.index = I.buffer.length = 0;
I.buffer.data[0] = '\0';
if (I.contents) {
memmove (I.buffer.data, I.contents,
R_MIN (strlen (I.contents) + 1, R_LINE_BUFSIZE - 1));
I.buffer.data[R_LINE_BUFSIZE - 1] = '\0';
I.buffer.index = I.buffer.length = strlen (I.contents);
}
if (I.disable) {
if (!fgets (I.buffer.data, R_LINE_BUFSIZE - 1, stdin)) {
return NULL;
}
I.buffer.data[strlen (I.buffer.data)] = '\0';
return (*I.buffer.data)? I.buffer.data: r_line_nullstr;
}
memset (&buf, 0, sizeof buf);
r_cons_set_raw (1);
if (I.echo) {
r_cons_clear_line (0);
printf ("%s%s%s", Color_RESET, I.prompt, I.buffer.data);
fflush (stdout);
}
r_cons_break_push (NULL, NULL);
for (;;) {
if (r_cons_is_breaked ()) {
break;
}
I.buffer.data[I.buffer.length] = '\0';
if (cb) {
int cbret = cb (user, I.buffer.data);
if (cbret == 0) {
I.buffer.data[0] = 0;
I.buffer.length = 0;
}
}
#if USE_UTF8
utflen = r_line_readchar_utf8 ((ut8 *) buf, sizeof (buf));
if (utflen < 1) {
r_cons_break_pop ();
return NULL;
}
buf[utflen] = 0;
#else
ch = r_cons_readchar ();
if (ch == -1) {
r_cons_break_pop ();
return NULL;
}
buf[0] = ch;
#endif
if (I.echo) {
r_cons_clear_line (0);
}
if (columns < 1) {
columns = 40;
}
#if __WINDOWS__ && !__CYGWIN__
if (I.echo) {
printf ("\r%*c\r", columns, ' ');
}
#else
if (I.echo) {
printf ("\r\x1b[2K\r"); // %*c\r", columns, ' ');
}
#endif
switch (*buf) {
case 0: // control-space
/* ignore atm */
break;
case 1: // ^A
if (gcomp) {
strcpy (I.buffer.data, gcomp_line);
I.buffer.length = strlen (I.buffer.data);
I.buffer.index = 0;
gcomp = false;
}
I.buffer.index = 0;
break;
case 2: // ^b // emacs left
#if USE_UTF8
{
char *s = I.buffer.data + I.buffer.index - 1;
utflen = 1;
while (s > I.buffer.data && (*s & 0xc0) == 0x80) {
utflen++;
s--;
}
}
I.buffer.index = I.buffer.index
? I.buffer.index - utflen
: 0;
#else
I.buffer.index = I.buffer.index
? I.buffer.index - 1
: 0;
#endif
break;
case 5: // ^E
if (gcomp) {
strcpy (I.buffer.data, gcomp_line);
I.buffer.index = strlen (I.buffer.data);
I.buffer.length = I.buffer.index;
gcomp = false;
} else if (prev == 24) {// ^X = 0x18
I.buffer.data[I.buffer.length] = 0; // probably unnecessary
tmp_ed_cmd = I.cb_editor (I.user, I.buffer.data);
if (tmp_ed_cmd) {
/* copied from yank (case 25) */
I.buffer.length = strlen (tmp_ed_cmd);
if (I.buffer.length < R_LINE_BUFSIZE) {
I.buffer.index = I.buffer.length;
strncpy (I.buffer.data, tmp_ed_cmd, R_LINE_BUFSIZE - 1);
I.buffer.data[R_LINE_BUFSIZE - 1] = '\0';
} else {
I.buffer.length -= strlen (tmp_ed_cmd);
}
free (tmp_ed_cmd);
}
} else {
I.buffer.index = I.buffer.length;
}
break;
case 3: // ^C
if (I.echo) {
eprintf ("^C\n");
}
I.buffer.index = I.buffer.length = 0;
*I.buffer.data = '\0';
gcomp = 0;
goto _end;
case 4: // ^D
if (!I.buffer.data[0]) {/* eof */
if (I.echo) {
printf ("^D\n");
}
r_cons_set_raw (false);
r_cons_break_pop ();
return NULL;
}
if (I.buffer.index < I.buffer.length) {
memmove (I.buffer.data + I.buffer.index,
I.buffer.data + I.buffer.index + 1,
strlen (I.buffer.data + I.buffer.index + 1) + 1);
}
break;
case 10:// ^J -- ignore
r_cons_break_pop ();
return I.buffer.data;
case 11:// ^K
I.buffer.data[I.buffer.index] = '\0';
I.buffer.length = I.buffer.index;
break;
case 6: // ^f // emacs right
#if USE_UTF8
{
char *s = I.buffer.data + I.buffer.index + 1;
utflen = 1;
while ((*s & 0xc0) == 0x80) {
utflen++;
s++;
}
I.buffer.index = I.buffer.index < I.buffer.length
? I.buffer.index + utflen
: I.buffer.length;
}
#else
I.buffer.index = I.buffer.index < I.buffer.length
? I.buffer.index + 1
: I.buffer.length;
#endif
break;
case 12:// ^L -- right
I.buffer.index = I.buffer.index < I.buffer.length
? I.buffer.index + 1
: I.buffer.length;
if (I.echo) {
eprintf ("\x1b[2J\x1b[0;0H");
}
fflush (stdout);
break;
case 18:// ^R -- autocompletion
gcomp = 1;
break;
case 19:// ^S -- backspace
if (gcomp) {
gcomp--;
} else {
#if USE_UTF8
if (I.buffer.index > 0) {
char *s;
do {
I.buffer.index--;
s = I.buffer.data + I.buffer.index;
} while ((*s & 0xc0) == 0x80);
}
#else
I.buffer.index = I.buffer.index? I.buffer.index - 1: 0;
#endif
}
break;
case 21:// ^U - cut
free (I.clipboard);
I.clipboard = strdup (I.buffer.data);
I.buffer.data[0] = '\0';
I.buffer.length = 0;
I.buffer.index = 0;
break;
case 23:// ^W ^w unix-word-rubout
unix_word_rubout ();
break;
case 24:// ^X -- do nothing but store in prev = *buf
break;
case 25:// ^Y - paste
paste ();
break;
case 14:// ^n
if (I.sel_widget) {
selection_widget_down (1);
selection_widget_draw ();
} else if (gcomp) {
if (gcomp_idx > 0) {
gcomp_idx--;
}
} else {
r_line_hist_down ();
}
break;
case 16:// ^p
if (I.sel_widget) {
selection_widget_up (1);
selection_widget_draw ();
} else if (gcomp) {
gcomp_idx++;
} else {
r_line_hist_up ();
}
break;
case 27: // esc-5b-41-00-00 alt/meta key
buf[0] = r_cons_readchar ();
switch (buf[0]) {
case 127: // alt+bkspace
backward_kill_word ();
break;
case -1:
r_cons_break_pop ();
return NULL;
case 1: // begin
I.buffer.index = 0;
break;
case 5: // end
I.buffer.index = I.buffer.length;
break;
case 'B':
case 'b':
// previous word
for (i = I.buffer.index - 2; i >= 0; i--) {
if (is_word_break_char (I.buffer.data[i]) && !is_word_break_char (I.buffer.data[i + 1])) {
I.buffer.index = i + 1;
break;
}
}
if (i < 0) {
I.buffer.index = 0;
}
break;
case 'D':
case 'd':
kill_word ();
break;
case 'F':
case 'f':
// next word
for (i = I.buffer.index + 1; i < I.buffer.length; i++) {
if (!is_word_break_char (I.buffer.data[i]) && is_word_break_char (I.buffer.data[i - 1])) {
I.buffer.index = i;
break;
}
}
if (i >= I.buffer.length) {
I.buffer.index = I.buffer.length;
}
break;
default:
buf[1] = r_cons_readchar ();
if (buf[1] == -1) {
r_cons_break_pop ();
return NULL;
}
if (buf[0] == 0x5b) { // [
switch (buf[1]) {
case '3': // supr
if (I.buffer.index < I.buffer.length) {
memmove (I.buffer.data + I.buffer.index,
I.buffer.data + I.buffer.index + 1,
strlen (I.buffer.data + I.buffer.index + 1) + 1);
}
buf[1] = r_cons_readchar ();
if (buf[1] == -1) {
r_cons_break_pop ();
return NULL;
}
break;
case '5': // pag up
buf[1] = r_cons_readchar ();
if (I.sel_widget) {
selection_widget_up (R_MIN (I.sel_widget->h, R_SELWIDGET_MAXH));
selection_widget_draw ();
}
break;
case '6': // pag down
buf[1] = r_cons_readchar ();
if (I.sel_widget) {
selection_widget_down (R_MIN (I.sel_widget->h, R_SELWIDGET_MAXH));
selection_widget_draw ();
}
break;
/* arrows */
case 'A': // up arrow
if (I.sel_widget) {
selection_widget_up (1);
selection_widget_draw ();
} else if (gcomp) {
gcomp_idx++;
} else if (r_line_hist_up () == -1) {
r_cons_break_pop ();
return NULL;
}
break;
case 'B': // down arrow
if (I.sel_widget) {
selection_widget_down (1);
selection_widget_draw ();
} else if (gcomp) {
if (gcomp_idx > 0) {
gcomp_idx--;
}
} else if (r_line_hist_down () == -1) {
r_cons_break_pop ();
return NULL;
}
break;
case 'C': // right arrow
#if USE_UTF8
{
char *s = I.buffer.data + I.buffer.index + 1;
utflen = 1;
while ((*s & 0xc0) == 0x80) {
utflen++;
s++;
}
I.buffer.index = I.buffer.index < I.buffer.length
? I.buffer.index + utflen
: I.buffer.length;
}
#else
I.buffer.index = I.buffer.index < I.buffer.length
? I.buffer.index + 1
: I.buffer.length;
#endif
break;
case 'D': // left arrow
#if USE_UTF8
{
char *s = I.buffer.data + I.buffer.index - 1;
utflen = 1;
while (s > I.buffer.data && (*s & 0xc0) == 0x80) {
utflen++;
s--;
}
}
I.buffer.index = I.buffer.index
? I.buffer.index - utflen
: 0;
#else
I.buffer.index = I.buffer.index
? I.buffer.index - 1
: 0;
#endif
break;
case 0x31: // control + arrow
ch = r_cons_readchar ();
if (ch == 0x7e) { // HOME in screen/tmux
// corresponding END is 0x34 below (the 0x7e is ignored there)
I.buffer.index = 0;
break;
}
r_cons_readchar ();
ch = r_cons_readchar ();
switch (ch) {
case 0x41:
// first
I.buffer.index = 0;
break;
case 0x44:
// previous word
for (i = I.buffer.index; i > 0; i--) {
if (I.buffer.data[i] == ' ') {
I.buffer.index = i - 1;
break;
}
}
if (I.buffer.data[i] != ' ') {
I.buffer.index = 0;
}
break;
case 0x42:
// end
I.buffer.index = I.buffer.length;
break;
case 0x43:
// next word
for (i = I.buffer.index; i < I.buffer.length; i++) {
if (I.buffer.data[i] == ' ') {
I.buffer.index = i + 1;
break;
}
}
if (I.buffer.data[i] != ' ') {
I.buffer.index = I.buffer.length;
}
break;
}
r_cons_set_raw (1);
break;
case 0x37: // HOME xrvt-unicode
r_cons_readchar ();
case 0x48: // HOME
if (I.sel_widget) {
selection_widget_up (I.sel_widget->options_len - 1);
selection_widget_draw ();
break;
}
I.buffer.index = 0;
break;
case 0x34: // END
case 0x38: // END xrvt-unicode
r_cons_readchar ();
case 0x46: // END
if (I.sel_widget) {
selection_widget_down (I.sel_widget->options_len - 1);
selection_widget_draw ();
break;
}
I.buffer.index = I.buffer.length;
break;
}
}
}
break;
case 8:
case 127:
if (I.buffer.index < I.buffer.length) {
if (I.buffer.index > 0) {
int len = 0;
// TODO: WIP
#if USE_UTF8
char *s;
do {
I.buffer.index--;
s = I.buffer.data + I.buffer.index;
len++;
} while ((*s & 0xc0) == 0x80);
#else
len = 1;
I.buffer.index--;
#endif
memmove (I.buffer.data + I.buffer.index,
I.buffer.data + I.buffer.index + len,
strlen (I.buffer.data + I.buffer.index));
I.buffer.length -= len;
I.buffer.data[I.buffer.length] = 0;
}
} else {
// OK
#if USE_UTF8
char *s;
// utf8 backward size
do {
I.buffer.length--;
if (I.buffer.length < 0) {
I.buffer.length = 0;
break;
}
s = I.buffer.data + I.buffer.length;
i++;
} while ((*s & 0xc0) == 0x80);
I.buffer.index = I.buffer.length;
#else
I.buffer.index = --I.buffer.length;
#endif
if (I.buffer.length < 0) {
I.buffer.length = 0;
}
I.buffer.data[I.buffer.length] = '\0';
}
if (I.buffer.index < 0) {
I.buffer.index = 0;
}
break;
case 9: // tab
if (I.buffer.data[I.buffer.length - 1] == '@') {
strcpy (I.buffer.data + I.buffer.length, " ");
I.buffer.length++;
I.buffer.index++;
}
if (I.sel_widget) {
I.sel_widget->complete_common = true;
}
r_line_autocomplete ();
break;
case 13: // enter
if (I.sel_widget) {
selection_widget_select ();
break;
}
if (gcomp && I.buffer.length > 0) {
strncpy (I.buffer.data, gcomp_line, R_LINE_BUFSIZE - 1);
I.buffer.data[R_LINE_BUFSIZE - 1] = '\0';
I.buffer.length = strlen (gcomp_line);
}
gcomp_idx = gcomp = 0;
goto _end;
default:
if (gcomp) {
gcomp++;
}
if (I.buffer.index < I.buffer.length) {
#if USE_UTF8
if ((I.buffer.length + utflen) < sizeof (I.buffer.data)) {
I.buffer.length += utflen;
for (i = I.buffer.length; i > I.buffer.index; i--) {
I.buffer.data[i] = I.buffer.data[i - utflen];
}
memcpy (I.buffer.data + I.buffer.index, buf, utflen);
}
#else
for (i = ++I.buffer.length; i > I.buffer.index; i--) {
I.buffer.data[i] = I.buffer.data[i - 1];
}
I.buffer.data[I.buffer.index] = buf[0];
#endif
} else {
#if USE_UTF8
if ((I.buffer.length + utflen) < sizeof (I.buffer.data)) {
memcpy (I.buffer.data + I.buffer.length, buf, utflen);
I.buffer.length += utflen;
}
I.buffer.data[I.buffer.length] = '\0';
#else
I.buffer.data[I.buffer.length] = buf[0];
I.buffer.length++;
if (I.buffer.length > (R_LINE_BUFSIZE - 1)) {
I.buffer.length--;
}
I.buffer.data[I.buffer.length] = '\0';
#endif
}
#if USE_UTF8
if ((I.buffer.index + utflen) <= I.buffer.length) {
I.buffer.index += utflen;
}
#else
if (I.buffer.index < I.buffer.length) {
I.buffer.index++;
}
#endif
break;
}
if (I.sel_widget && I.buffer.length != prev_buflen) {
prev_buflen = I.buffer.length;
r_line_autocomplete ();
}
prev = buf[0];
if (I.echo) {
if (gcomp) {
gcomp_line = "";
if (I.history.data != NULL) {
for (i = 0; i < I.history.size; i++) {
if (!I.history.data[i]) {
break;
}
if (strstr (I.history.data[i], I.buffer.data)) {
gcomp_line = I.history.data[i];
if (!gcomp_idx--) {
break;
}
}
}
}
printf ("\r (reverse-i-search (%s)): %s\r", I.buffer.data, gcomp_line);
} else {
int chars = R_MAX (1, strlen (I.buffer.data)); // wtf?
int len, cols = R_MAX (1, columns - r_str_ansi_len (I.prompt) - 2);
/* print line */
printf ("\r%s%s", Color_RESET, I.prompt);
fwrite (I.buffer.data, 1, R_MIN (cols, chars), stdout);
/* place cursor */
printf ("\r%s", I.prompt);
if (I.buffer.index > cols) {
printf ("< ");
i = I.buffer.index - cols;
if (i > sizeof (I.buffer.data)) {
i = sizeof (I.buffer.data) - 1;
}
} else {
i = 0;
}
len = I.buffer.index - i;
if (len > 0 && (i + len) <= I.buffer.length) {
fwrite (I.buffer.data + i, 1, len, stdout);
}
}
fflush (stdout);
}
}
_end:
r_cons_break_pop ();
r_cons_set_raw (0);
if (I.echo) {
printf ("\r%s%s\n", I.prompt, I.buffer.data);
fflush (stdout);
}
R_FREE (I.sel_widget);
// should be here or not?
if (!memcmp (I.buffer.data, "!history", 8)) {
// if (I.buffer.data[0]=='!' && I.buffer.data[1]=='\0') {
r_line_hist_list ();
return r_line_nullstr;
}
return I.buffer.data[0] != '\0'? I.buffer.data: r_line_nullstr;
}
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