4 * Copyright 1996 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 * This code is duplicated in user32. If you change something here make sure
22 * to change it in user32 too.
31 #define NO_SHLWAPI_REG
34 #include "wine/debug.h"
36 WINE_DEFAULT_DEBUG_CHANNEL(string);
39 #define WPRINTF_LEFTALIGN 0x0001 /* Align output on the left ('-' prefix) */
40 #define WPRINTF_PREFIX_HEX 0x0002 /* Prefix hex with 0x ('#' prefix) */
41 #define WPRINTF_ZEROPAD 0x0004 /* Pad with zeros ('0' prefix) */
42 #define WPRINTF_LONG 0x0008 /* Long arg ('l' prefix) */
43 #define WPRINTF_SHORT 0x0010 /* Short arg ('h' prefix) */
44 #define WPRINTF_UPPER_HEX 0x0020 /* Upper-case hex ('X' specifier) */
45 #define WPRINTF_WIDE 0x0040 /* Wide arg ('w' prefix) */
75 static const CHAR null_stringA[] = "(null)";
76 static const WCHAR null_stringW[] = { '(', 'n', 'u', 'l', 'l', ')', 0 };
78 /***********************************************************************
79 * WPRINTF_ParseFormatA
81 * Parse a format specification. A format specification has the form:
83 * [-][#][0][width][.precision]type
85 * Return value is the length of the format specification in characters.
87 static INT WPRINTF_ParseFormatA( LPCSTR format, WPRINTF_FORMAT *res )
94 if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
95 if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
96 if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
97 while ((*p >= '0') && (*p <= '9')) /* width field */
99 res->width = res->width * 10 + *p - '0';
102 if (*p == '.') /* precision field */
105 while ((*p >= '0') && (*p <= '9'))
107 res->precision = res->precision * 10 + *p - '0';
111 if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
112 else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
113 else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
117 res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
120 res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
124 res->type = WPR_SIGNED;
127 res->type = (res->flags & (WPRINTF_LONG |WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
130 res->type = (res->flags & (WPRINTF_SHORT|WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
133 res->type = WPR_UNSIGNED;
136 res->flags |= WPRINTF_UPPER_HEX;
139 res->type = WPR_HEXA;
141 default: /* unknown format char */
142 res->type = WPR_UNKNOWN;
143 p--; /* print format as normal char */
146 return (INT)(p - format) + 1;
150 /***********************************************************************
151 * WPRINTF_ParseFormatW
153 * Parse a format specification. A format specification has the form:
155 * [-][#][0][width][.precision]type
157 * Return value is the length of the format specification in characters.
159 static INT WPRINTF_ParseFormatW( LPCWSTR format, WPRINTF_FORMAT *res )
166 if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
167 if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
168 if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
169 while ((*p >= '0') && (*p <= '9')) /* width field */
171 res->width = res->width * 10 + *p - '0';
174 if (*p == '.') /* precision field */
177 while ((*p >= '0') && (*p <= '9'))
179 res->precision = res->precision * 10 + *p - '0';
183 if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
184 else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
185 else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
189 res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
192 res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
196 res->type = WPR_SIGNED;
199 res->type = ((res->flags & WPRINTF_SHORT) && !(res->flags & WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
202 res->type = (res->flags & (WPRINTF_LONG|WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
205 res->type = WPR_UNSIGNED;
208 res->flags |= WPRINTF_UPPER_HEX;
211 res->type = WPR_HEXA;
214 res->type = WPR_UNKNOWN;
215 p--; /* print format as normal char */
218 return (INT)(p - format) + 1;
222 /***********************************************************************
225 static UINT WPRINTF_GetLen( WPRINTF_FORMAT *format, WPRINTF_DATA *arg,
226 LPSTR number, UINT maxlen )
230 if (format->flags & WPRINTF_LEFTALIGN) format->flags &= ~WPRINTF_ZEROPAD;
231 if (format->width > maxlen) format->width = maxlen;
236 return (format->precision = 1);
238 if (!arg->lpcstr_view) arg->lpcstr_view = null_stringA;
239 for (len = 0; !format->precision || (len < format->precision); len++)
240 if (!*(arg->lpcstr_view + len)) break;
241 if (len > maxlen) len = maxlen;
242 return (format->precision = len);
244 if (!arg->lpcwstr_view) arg->lpcwstr_view = null_stringW;
245 for (len = 0; !format->precision || (len < format->precision); len++)
246 if (!*(arg->lpcwstr_view + len)) break;
247 if (len > maxlen) len = maxlen;
248 return (format->precision = len);
250 len = sprintf( number, "%d", arg->int_view );
253 len = sprintf( number, "%u", (UINT)arg->int_view );
256 len = sprintf( number,
257 (format->flags & WPRINTF_UPPER_HEX) ? "%X" : "%x",
258 (UINT)arg->int_view);
263 if (len > maxlen) len = maxlen;
264 if (format->precision < len) format->precision = len;
265 if (format->precision > maxlen) format->precision = maxlen;
266 if ((format->flags & WPRINTF_ZEROPAD) && (format->width > format->precision))
267 format->precision = format->width;
268 if (format->flags & WPRINTF_PREFIX_HEX) len += 2;
273 /***********************************************************************
274 * wvnsprintfA (SHLWAPI.@)
276 * Print formatted output to a string, up to a maximum number of chars.
279 * buffer [O] Destination for output string
280 * maxlen [I] Maximum number of characters to write
281 * spec [I] Format string
284 * Success: The number of characters written.
287 INT WINAPI wvnsprintfA( LPSTR buffer, INT maxlen, LPCSTR spec, va_list args )
289 WPRINTF_FORMAT format;
293 WPRINTF_DATA argData;
295 TRACE("%p %u %s\n", buffer, maxlen, debugstr_a(spec));
297 while (*spec && (maxlen > 1))
299 if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
301 if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
302 spec += WPRINTF_ParseFormatA( spec, &format );
307 argData.wchar_view = (WCHAR)va_arg( args, int );
310 argData.char_view = (CHAR)va_arg( args, int );
313 argData.lpcstr_view = va_arg( args, LPCSTR );
316 argData.lpcwstr_view = va_arg( args, LPCWSTR );
321 argData.int_view = va_arg( args, INT );
324 argData.wchar_view = 0;
328 len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
330 if (!(format.flags & WPRINTF_LEFTALIGN))
331 for (i = format.precision; i < format.width; i++, maxlen--)
336 *p++ = argData.wchar_view;
339 *p++ = argData.char_view;
342 memcpy( p, argData.lpcstr_view, len );
347 LPCWSTR ptr = argData.lpcwstr_view;
348 for (i = 0; i < len; i++) *p++ = (CHAR)*ptr++;
352 if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
355 *p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
361 /* Transfer the sign now, just in case it will be zero-padded*/
362 if (number[0] == '-')
369 for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
370 memcpy( p, number + sign, len - sign );
376 if (format.flags & WPRINTF_LEFTALIGN)
377 for (i = format.precision; i < format.width; i++, maxlen--)
382 TRACE("%s\n",debugstr_a(buffer));
383 return (maxlen > 1) ? (INT)(p - buffer) : -1;
387 /***********************************************************************
388 * wvnsprintfW (SHLWAPI.@)
392 INT WINAPI wvnsprintfW( LPWSTR buffer, INT maxlen, LPCWSTR spec, va_list args )
394 WPRINTF_FORMAT format;
398 WPRINTF_DATA argData;
400 TRACE("%p %u %s\n", buffer, maxlen, debugstr_w(spec));
402 while (*spec && (maxlen > 1))
404 if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
406 if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
407 spec += WPRINTF_ParseFormatW( spec, &format );
412 argData.wchar_view = (WCHAR)va_arg( args, int );
415 argData.char_view = (CHAR)va_arg( args, int );
418 argData.lpcstr_view = va_arg( args, LPCSTR );
421 argData.lpcwstr_view = va_arg( args, LPCWSTR );
426 argData.int_view = va_arg( args, INT );
429 argData.wchar_view = 0;
433 len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
435 if (!(format.flags & WPRINTF_LEFTALIGN))
436 for (i = format.precision; i < format.width; i++, maxlen--)
441 *p++ = argData.wchar_view;
444 *p++ = argData.char_view;
448 LPCSTR ptr = argData.lpcstr_view;
449 for (i = 0; i < len; i++) *p++ = (WCHAR)*ptr++;
453 if (len) memcpy( p, argData.lpcwstr_view, len * sizeof(WCHAR) );
457 if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
460 *p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
466 /* Transfer the sign now, just in case it will be zero-padded*/
467 if (number[0] == '-')
474 for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
475 for (i = sign; i < len; i++) *p++ = (WCHAR)number[i];
480 if (format.flags & WPRINTF_LEFTALIGN)
481 for (i = format.precision; i < format.width; i++, maxlen--)
486 TRACE("%s\n",debugstr_w(buffer));
487 return (maxlen > 1) ? (INT)(p - buffer) : -1;
491 /*************************************************************************
492 * wnsprintfA (SHLWAPI.@)
494 * Print formatted output to a string, up to a maximum number of chars.
497 * lpOut [O] Destination for output string
498 * cchLimitIn [I] Maximum number of characters to write
499 * lpFmt [I] Format string
502 * Success: The number of characters written.
505 int WINAPIV wnsprintfA(LPSTR lpOut, int cchLimitIn, LPCSTR lpFmt, ...)
510 va_start( valist, lpFmt );
511 res = wvnsprintfA( lpOut, cchLimitIn, lpFmt, valist );
517 /*************************************************************************
518 * wnsprintfW (SHLWAPI.@)
522 int WINAPIV wnsprintfW(LPWSTR lpOut, int cchLimitIn, LPCWSTR lpFmt, ...)
527 va_start( valist, lpFmt );
528 res = wvnsprintfW( lpOut, cchLimitIn, lpFmt, valist );