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574 lines
17 KiB
C
574 lines
17 KiB
C
/*
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* wsprintf functions
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*
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* Copyright 1996 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* NOTE:
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* This code is duplicated in user32. If you change something here make sure
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* to change it in user32 too.
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*/
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#include <stdarg.h>
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#include <string.h>
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#include <stdio.h>
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#include "windef.h"
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#include "winbase.h"
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#define NO_SHLWAPI_REG
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#include "shlwapi.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(string);
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#define WPRINTF_LEFTALIGN 0x0001 /* Align output on the left ('-' prefix) */
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#define WPRINTF_PREFIX_HEX 0x0002 /* Prefix hex with 0x ('#' prefix) */
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#define WPRINTF_ZEROPAD 0x0004 /* Pad with zeros ('0' prefix) */
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#define WPRINTF_LONG 0x0008 /* Long arg ('l' prefix) */
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#define WPRINTF_SHORT 0x0010 /* Short arg ('h' prefix) */
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#define WPRINTF_UPPER_HEX 0x0020 /* Upper-case hex ('X' specifier) */
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#define WPRINTF_WIDE 0x0040 /* Wide arg ('w' prefix) */
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#define WPRINTF_INTPTR 0x0080 /* Pointer-size arg ('I' prefix) */
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#define WPRINTF_I64 0x0100 /* 64-bit arg ('I64' prefix) */
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typedef enum
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{
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WPR_UNKNOWN,
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WPR_CHAR,
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WPR_WCHAR,
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WPR_STRING,
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WPR_WSTRING,
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WPR_SIGNED,
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WPR_UNSIGNED,
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WPR_HEXA
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} WPRINTF_TYPE;
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typedef struct
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{
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UINT flags;
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UINT width;
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UINT precision;
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WPRINTF_TYPE type;
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} WPRINTF_FORMAT;
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typedef union {
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WCHAR wchar_view;
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CHAR char_view;
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LPCSTR lpcstr_view;
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LPCWSTR lpcwstr_view;
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LONGLONG int_view;
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} WPRINTF_DATA;
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static const CHAR null_stringA[] = "(null)";
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static const WCHAR null_stringW[] = { '(', 'n', 'u', 'l', 'l', ')', 0 };
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/***********************************************************************
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* WPRINTF_ParseFormatA
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*
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* Parse a format specification. A format specification has the form:
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*
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* [-][#][0][width][.precision]type
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*
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* Return value is the length of the format specification in characters.
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*/
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static INT WPRINTF_ParseFormatA( LPCSTR format, WPRINTF_FORMAT *res )
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{
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LPCSTR p = format;
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res->flags = 0;
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res->width = 0;
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res->precision = 0;
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if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
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if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
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if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
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while ((*p >= '0') && (*p <= '9')) /* width field */
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{
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res->width = res->width * 10 + *p - '0';
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p++;
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}
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if (*p == '.') /* precision field */
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{
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p++;
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while ((*p >= '0') && (*p <= '9'))
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{
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res->precision = res->precision * 10 + *p - '0';
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p++;
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}
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}
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if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
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else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
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else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
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else if (*p == 'I')
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{
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if (p[1] == '6' && p[2] == '4') { res->flags |= WPRINTF_I64; p += 3; }
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else if (p[1] == '3' && p[2] == '2') p += 3;
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else { res->flags |= WPRINTF_INTPTR; p++; }
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}
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switch(*p)
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{
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case 'c':
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res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
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break;
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case 'C':
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res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
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break;
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case 'd':
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case 'i':
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res->type = WPR_SIGNED;
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break;
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case 's':
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res->type = (res->flags & (WPRINTF_LONG |WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
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break;
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case 'S':
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res->type = (res->flags & (WPRINTF_SHORT|WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
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break;
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case 'u':
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res->type = WPR_UNSIGNED;
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break;
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case 'p':
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res->width = 2 * sizeof(void *);
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res->flags |= WPRINTF_ZEROPAD | WPRINTF_INTPTR;
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/* fall through */
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case 'X':
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res->flags |= WPRINTF_UPPER_HEX;
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/* fall through */
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case 'x':
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res->type = WPR_HEXA;
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break;
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default: /* unknown format char */
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res->type = WPR_UNKNOWN;
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p--; /* print format as normal char */
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break;
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}
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return (INT)(p - format) + 1;
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}
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/***********************************************************************
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* WPRINTF_ParseFormatW
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*
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* Parse a format specification. A format specification has the form:
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*
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* [-][#][0][width][.precision]type
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*
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* Return value is the length of the format specification in characters.
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*/
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static INT WPRINTF_ParseFormatW( LPCWSTR format, WPRINTF_FORMAT *res )
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{
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LPCWSTR p = format;
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res->flags = 0;
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res->width = 0;
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res->precision = 0;
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if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
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if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
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if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
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while ((*p >= '0') && (*p <= '9')) /* width field */
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{
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res->width = res->width * 10 + *p - '0';
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p++;
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}
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if (*p == '.') /* precision field */
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{
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p++;
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while ((*p >= '0') && (*p <= '9'))
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{
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res->precision = res->precision * 10 + *p - '0';
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p++;
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}
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}
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if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
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else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
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else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
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else if (*p == 'I')
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{
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if (p[1] == '6' && p[2] == '4') { res->flags |= WPRINTF_I64; p += 3; }
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else if (p[1] == '3' && p[2] == '2') p += 3;
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else { res->flags |= WPRINTF_INTPTR; p++; }
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}
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switch(*p)
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{
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case 'c':
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res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
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break;
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case 'C':
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res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
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break;
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case 'd':
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case 'i':
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res->type = WPR_SIGNED;
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break;
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case 's':
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res->type = ((res->flags & WPRINTF_SHORT) && !(res->flags & WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
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break;
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case 'S':
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res->type = (res->flags & (WPRINTF_LONG|WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
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break;
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case 'u':
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res->type = WPR_UNSIGNED;
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break;
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case 'p':
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res->width = 2 * sizeof(void *);
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res->flags |= WPRINTF_ZEROPAD | WPRINTF_INTPTR;
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/* fall through */
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case 'X':
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res->flags |= WPRINTF_UPPER_HEX;
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/* fall through */
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case 'x':
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res->type = WPR_HEXA;
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break;
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default:
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res->type = WPR_UNKNOWN;
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p--; /* print format as normal char */
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break;
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}
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return (INT)(p - format) + 1;
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}
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/***********************************************************************
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* WPRINTF_GetLen
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*/
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static UINT WPRINTF_GetLen( WPRINTF_FORMAT *format, WPRINTF_DATA *arg,
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LPSTR number, UINT maxlen )
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{
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UINT len;
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if (format->flags & WPRINTF_LEFTALIGN) format->flags &= ~WPRINTF_ZEROPAD;
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if (format->width > maxlen) format->width = maxlen;
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switch(format->type)
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{
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case WPR_CHAR:
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case WPR_WCHAR:
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return (format->precision = 1);
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case WPR_STRING:
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if (!arg->lpcstr_view) arg->lpcstr_view = null_stringA;
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for (len = 0; !format->precision || (len < format->precision); len++)
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if (!*(arg->lpcstr_view + len)) break;
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if (len > maxlen) len = maxlen;
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return (format->precision = len);
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case WPR_WSTRING:
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if (!arg->lpcwstr_view) arg->lpcwstr_view = null_stringW;
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for (len = 0; !format->precision || (len < format->precision); len++)
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if (!*(arg->lpcwstr_view + len)) break;
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if (len > maxlen) len = maxlen;
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return (format->precision = len);
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case WPR_SIGNED:
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case WPR_UNSIGNED:
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case WPR_HEXA:
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{
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const char *digits = (format->flags & WPRINTF_UPPER_HEX) ? "0123456789ABCDEF" : "0123456789abcdef";
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ULONGLONG num = arg->int_view;
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int base = format->type == WPR_HEXA ? 16 : 10;
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char buffer[20], *p = buffer, *dst = number;
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if (format->type == WPR_SIGNED && arg->int_view < 0)
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{
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*dst++ = '-';
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num = -arg->int_view;
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}
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if (format->flags & WPRINTF_INTPTR) num = (UINT_PTR)num;
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else if (!(format->flags & WPRINTF_I64)) num = (UINT)num;
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do
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{
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*p++ = digits[num % base];
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num /= base;
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} while (num);
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while (p > buffer) *dst++ = *(--p);
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*dst = 0;
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len = dst - number;
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break;
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}
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default:
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return 0;
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}
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if (len > maxlen) len = maxlen;
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if (format->precision < len) format->precision = len;
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if (format->precision > maxlen) format->precision = maxlen;
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if ((format->flags & WPRINTF_ZEROPAD) && (format->width > format->precision))
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format->precision = format->width;
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if (format->flags & WPRINTF_PREFIX_HEX) len += 2;
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return len;
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}
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/***********************************************************************
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* wvnsprintfA (SHLWAPI.@)
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*
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* Print formatted output to a string, up to a maximum number of chars.
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*
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* PARAMS
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* buffer [O] Destination for output string
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* maxlen [I] Maximum number of characters to write
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* spec [I] Format string
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*
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* RETURNS
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* Success: The number of characters written.
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* Failure: -1.
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*/
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INT WINAPI wvnsprintfA( LPSTR buffer, INT maxlen, LPCSTR spec, __ms_va_list args )
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{
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WPRINTF_FORMAT format;
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LPSTR p = buffer;
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UINT i, len, sign;
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CHAR number[20];
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WPRINTF_DATA argData;
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TRACE("%p %u %s\n", buffer, maxlen, debugstr_a(spec));
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while (*spec && (maxlen > 1))
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{
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if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
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spec++;
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if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
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spec += WPRINTF_ParseFormatA( spec, &format );
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switch(format.type)
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{
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case WPR_WCHAR:
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argData.wchar_view = (WCHAR)va_arg( args, int );
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break;
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case WPR_CHAR:
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argData.char_view = (CHAR)va_arg( args, int );
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break;
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case WPR_STRING:
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argData.lpcstr_view = va_arg( args, LPCSTR );
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break;
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case WPR_WSTRING:
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argData.lpcwstr_view = va_arg( args, LPCWSTR );
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break;
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case WPR_HEXA:
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case WPR_SIGNED:
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case WPR_UNSIGNED:
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if (format.flags & WPRINTF_INTPTR) argData.int_view = va_arg(args, INT_PTR);
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else if (format.flags & WPRINTF_I64) argData.int_view = va_arg(args, LONGLONG);
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else argData.int_view = va_arg(args, INT);
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break;
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default:
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argData.wchar_view = 0;
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break;
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}
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len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
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sign = 0;
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if (!(format.flags & WPRINTF_LEFTALIGN))
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for (i = format.precision; i < format.width; i++, maxlen--)
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*p++ = ' ';
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switch(format.type)
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{
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case WPR_WCHAR:
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*p++ = argData.wchar_view;
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break;
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case WPR_CHAR:
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*p++ = argData.char_view;
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break;
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case WPR_STRING:
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memcpy( p, argData.lpcstr_view, len );
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p += len;
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break;
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case WPR_WSTRING:
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{
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LPCWSTR ptr = argData.lpcwstr_view;
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for (i = 0; i < len; i++) *p++ = (CHAR)*ptr++;
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}
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break;
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case WPR_HEXA:
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if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
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{
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*p++ = '0';
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*p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
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maxlen -= 2;
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len -= 2;
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}
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/* fall through */
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case WPR_SIGNED:
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/* Transfer the sign now, just in case it will be zero-padded*/
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if (number[0] == '-')
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{
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*p++ = '-';
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sign = 1;
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}
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/* fall through */
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case WPR_UNSIGNED:
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for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
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memcpy( p, number + sign, len - sign );
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p += len - sign;
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break;
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case WPR_UNKNOWN:
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continue;
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}
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if (format.flags & WPRINTF_LEFTALIGN)
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for (i = format.precision; i < format.width; i++, maxlen--)
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*p++ = ' ';
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maxlen -= len;
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}
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*p = 0;
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TRACE("%s\n",debugstr_a(buffer));
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return (maxlen > 1) ? (INT)(p - buffer) : -1;
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}
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/***********************************************************************
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* wvnsprintfW (SHLWAPI.@)
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*
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* See wvnsprintfA.
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*/
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INT WINAPI wvnsprintfW( LPWSTR buffer, INT maxlen, LPCWSTR spec, __ms_va_list args )
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{
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WPRINTF_FORMAT format;
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LPWSTR p = buffer;
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UINT i, len, sign;
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CHAR number[20];
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WPRINTF_DATA argData;
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TRACE("%p %u %s\n", buffer, maxlen, debugstr_w(spec));
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while (*spec && (maxlen > 1))
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{
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if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
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spec++;
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if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
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spec += WPRINTF_ParseFormatW( spec, &format );
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switch(format.type)
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{
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case WPR_WCHAR:
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argData.wchar_view = (WCHAR)va_arg( args, int );
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break;
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case WPR_CHAR:
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argData.char_view = (CHAR)va_arg( args, int );
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break;
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case WPR_STRING:
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argData.lpcstr_view = va_arg( args, LPCSTR );
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break;
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case WPR_WSTRING:
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argData.lpcwstr_view = va_arg( args, LPCWSTR );
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break;
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case WPR_HEXA:
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case WPR_SIGNED:
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case WPR_UNSIGNED:
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if (format.flags & WPRINTF_INTPTR) argData.int_view = va_arg(args, INT_PTR);
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else if (format.flags & WPRINTF_I64) argData.int_view = va_arg(args, LONGLONG);
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else argData.int_view = va_arg(args, INT);
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break;
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default:
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argData.wchar_view = 0;
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break;
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}
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len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
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sign = 0;
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if (!(format.flags & WPRINTF_LEFTALIGN))
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for (i = format.precision; i < format.width; i++, maxlen--)
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*p++ = ' ';
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switch(format.type)
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{
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case WPR_WCHAR:
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*p++ = argData.wchar_view;
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break;
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case WPR_CHAR:
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*p++ = argData.char_view;
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break;
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case WPR_STRING:
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{
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LPCSTR ptr = argData.lpcstr_view;
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for (i = 0; i < len; i++) *p++ = (BYTE)*ptr++;
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}
|
|
break;
|
|
case WPR_WSTRING:
|
|
if (len) memcpy( p, argData.lpcwstr_view, len * sizeof(WCHAR) );
|
|
p += len;
|
|
break;
|
|
case WPR_HEXA:
|
|
if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
|
|
{
|
|
*p++ = '0';
|
|
*p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
|
|
maxlen -= 2;
|
|
len -= 2;
|
|
}
|
|
/* fall through */
|
|
case WPR_SIGNED:
|
|
/* Transfer the sign now, just in case it will be zero-padded*/
|
|
if (number[0] == '-')
|
|
{
|
|
*p++ = '-';
|
|
sign = 1;
|
|
}
|
|
/* fall through */
|
|
case WPR_UNSIGNED:
|
|
for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
|
|
for (i = sign; i < len; i++) *p++ = (BYTE)number[i];
|
|
break;
|
|
case WPR_UNKNOWN:
|
|
continue;
|
|
}
|
|
if (format.flags & WPRINTF_LEFTALIGN)
|
|
for (i = format.precision; i < format.width; i++, maxlen--)
|
|
*p++ = ' ';
|
|
maxlen -= len;
|
|
}
|
|
*p = 0;
|
|
TRACE("%s\n",debugstr_w(buffer));
|
|
return (maxlen > 1) ? (INT)(p - buffer) : -1;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* wnsprintfA (SHLWAPI.@)
|
|
*
|
|
* Print formatted output to a string, up to a maximum number of chars.
|
|
*
|
|
* PARAMS
|
|
* lpOut [O] Destination for output string
|
|
* cchLimitIn [I] Maximum number of characters to write
|
|
* lpFmt [I] Format string
|
|
*
|
|
* RETURNS
|
|
* Success: The number of characters written.
|
|
* Failure: -1.
|
|
*/
|
|
int WINAPIV wnsprintfA(LPSTR lpOut, int cchLimitIn, LPCSTR lpFmt, ...)
|
|
{
|
|
__ms_va_list valist;
|
|
INT res;
|
|
|
|
__ms_va_start( valist, lpFmt );
|
|
res = wvnsprintfA( lpOut, cchLimitIn, lpFmt, valist );
|
|
__ms_va_end( valist );
|
|
return res;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* wnsprintfW (SHLWAPI.@)
|
|
*
|
|
* See wnsprintfA.
|
|
*/
|
|
int WINAPIV wnsprintfW(LPWSTR lpOut, int cchLimitIn, LPCWSTR lpFmt, ...)
|
|
{
|
|
__ms_va_list valist;
|
|
INT res;
|
|
|
|
__ms_va_start( valist, lpFmt );
|
|
res = wvnsprintfW( lpOut, cchLimitIn, lpFmt, valist );
|
|
__ms_va_end( valist );
|
|
return res;
|
|
}
|