aboutsummaryrefslogtreecommitdiffstats
path: root/intl/printf.c
blob: 004c66f783d1914199507d4c0ce78a879364d84d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
/* Formatted output to strings, using POSIX/XSI format strings with positions.
   Copyright (C) 2003, 2006 Free Software Foundation, Inc.
   Written by Bruno Haible <bruno@clisp.org>, 2003.

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU Library General Public License as published
   by the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
   USA.  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#ifdef __GNUC__
# define alloca __builtin_alloca
# define HAVE_ALLOCA 1
#else
# ifdef _MSC_VER
#  include <malloc.h>
#  define alloca _alloca
# else
#  if defined HAVE_ALLOCA_H || defined _LIBC
#   include <alloca.h>
#  else
#   ifdef _AIX
 #pragma alloca
#   else
#    ifndef alloca
char *alloca ();
#    endif
#   endif
#  endif
# endif
#endif

#include <stdio.h>

#if !HAVE_POSIX_PRINTF

#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>

/* Some systems, like OSF/1 4.0 and Woe32, don't have EOVERFLOW.  */
#ifndef EOVERFLOW
# define EOVERFLOW E2BIG
#endif

/* When building a DLL, we must export some functions.  Note that because
   the functions are only defined for binary backward compatibility, we
   don't need to use __declspec(dllimport) in any case.  */
#if defined _MSC_VER && BUILDING_DLL
# define DLL_EXPORTED __declspec(dllexport)
#else
# define DLL_EXPORTED
#endif

#define STATIC static

/* This needs to be consistent with libgnuintl.h.in.  */
#if defined __NetBSD__ || defined __CYGWIN__ || defined __MINGW32__
/* Don't break __attribute__((format(printf,M,N))).
   This redefinition is only possible because the libc in NetBSD, Cygwin,
   mingw does not have a function __printf__.  */
# define libintl_printf __printf__
#endif

/* Define auxiliary functions declared in "printf-args.h".  */
#include "printf-args.c"

/* Define auxiliary functions declared in "printf-parse.h".  */
#include "printf-parse.c"

/* Define functions declared in "vasnprintf.h".  */
#define vasnprintf libintl_vasnprintf
#include "vasnprintf.c"
#if 0 /* not needed */
#define asnprintf libintl_asnprintf
#include "asnprintf.c"
#endif

DLL_EXPORTED
int
libintl_vfprintf (FILE *stream, const char *format, va_list args)
{
  if (strchr (format, '$') == NULL)
    return vfprintf (stream, format, args);
  else
    {
      size_t length;
      char *result = libintl_vasnprintf (NULL, &length, format, args);
      int retval = -1;
      if (result != NULL)
	{
	  size_t written = fwrite (result, 1, length, stream);
	  free (result);
	  if (written == length)
	    {
	      if (length > INT_MAX)
		errno = EOVERFLOW;
	      else
		retval = length;
	    }
	}
      return retval;
    }
}

DLL_EXPORTED
int
libintl_fprintf (FILE *stream, const char *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = libintl_vfprintf (stream, format, args);
  va_end (args);
  return retval;
}

DLL_EXPORTED
int
libintl_vprintf (const char *format, va_list args)
{
  return libintl_vfprintf (stdout, format, args);
}

DLL_EXPORTED
int
libintl_printf (const char *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = libintl_vprintf (format, args);
  va_end (args);
  return retval;
}

DLL_EXPORTED
int
libintl_vsprintf (char *resultbuf, const char *format, va_list args)
{
  if (strchr (format, '$') == NULL)
    return vsprintf (resultbuf, format, args);
  else
    {
      size_t length = (size_t) ~0 / (4 * sizeof (char));
      char *result = libintl_vasnprintf (resultbuf, &length, format, args);
      if (result != resultbuf)
	{
	  free (result);
	  return -1;
	}
      if (length > INT_MAX)
	{
	  errno = EOVERFLOW;
	  return -1;
	}
      else
	return length;
    }
}

DLL_EXPORTED
int
libintl_sprintf (char *resultbuf, const char *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = libintl_vsprintf (resultbuf, format, args);
  va_end (args);
  return retval;
}

#if HAVE_SNPRINTF

# if HAVE_DECL__SNPRINTF
   /* Windows.  */
#  define system_vsnprintf _vsnprintf
# else
   /* Unix.  */
#  define system_vsnprintf vsnprintf
# endif

DLL_EXPORTED
int
libintl_vsnprintf (char *resultbuf, size_t length, const char *format, va_list args)
{
  if (strchr (format, '$') == NULL)
    return system_vsnprintf (resultbuf, length, format, args);
  else
    {
      size_t maxlength = length;
      char *result = libintl_vasnprintf (resultbuf, &length, format, args);
      if (result != resultbuf)
	{
	  if (maxlength > 0)
	    {
	      size_t pruned_length =
		(length < maxlength ? length : maxlength - 1);
	      memcpy (resultbuf, result, pruned_length);
	      resultbuf[pruned_length] = '\0';
	    }
	  free (result);
	}
      if (length > INT_MAX)
	{
	  errno = EOVERFLOW;
	  return -1;
	}
      else
	return length;
    }
}

DLL_EXPORTED
int
libintl_snprintf (char *resultbuf, size_t length, const char *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = libintl_vsnprintf (resultbuf, length, format, args);
  va_end (args);
  return retval;
}

#endif

#if HAVE_ASPRINTF

DLL_EXPORTED
int
libintl_vasprintf (char **resultp, const char *format, va_list args)
{
  size_t length;
  char *result = libintl_vasnprintf (NULL, &length, format, args);
  if (result == NULL)
    return -1;
  if (length > INT_MAX)
    {
      free (result);
      errno = EOVERFLOW;
      return -1;
    }
  *resultp = result;
  return length;
}

DLL_EXPORTED
int
libintl_asprintf (char **resultp, const char *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = libintl_vasprintf (resultp, format, args);
  va_end (args);
  return retval;
}

#endif

#if HAVE_FWPRINTF

#include <wchar.h>

#define WIDE_CHAR_VERSION 1

/* Define auxiliary functions declared in "wprintf-parse.h".  */
#include "printf-parse.c"

/* Define functions declared in "vasnprintf.h".  */
#define vasnwprintf libintl_vasnwprintf
#include "vasnprintf.c"
#if 0 /* not needed */
#define asnwprintf libintl_asnwprintf
#include "asnprintf.c"
#endif

# if HAVE_DECL__SNWPRINTF
   /* Windows.  */
#  define system_vswprintf _vsnwprintf
# else
   /* Unix.  */
#  define system_vswprintf vswprintf
# endif

DLL_EXPORTED
int
libintl_vfwprintf (FILE *stream, const wchar_t *format, va_list args)
{
  if (wcschr (format, '$') == NULL)
    return vfwprintf (stream, format, args);
  else
    {
      size_t length;
      wchar_t *result = libintl_vasnwprintf (NULL, &length, format, args);
      int retval = -1;
      if (result != NULL)
	{
	  size_t i;
	  for (i = 0; i < length; i++)
	    if (fputwc (result[i], stream) == WEOF)
	      break;
	  free (result);
	  if (i == length)
	    {
	      if (length > INT_MAX)
		errno = EOVERFLOW;
	      else
		retval = length;
	    }
	}
      return retval;
    }
}

DLL_EXPORTED
int
libintl_fwprintf (FILE *stream, const wchar_t *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = libintl_vfwprintf (stream, format, args);
  va_end (args);
  return retval;
}

DLL_EXPORTED
int
libintl_vwprintf (const wchar_t *format, va_list args)
{
  return libintl_vfwprintf (stdout, format, args);
}

DLL_EXPORTED
int
libintl_wprintf (const wchar_t *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = libintl_vwprintf (format, args);
  va_end (args);
  return retval;
}

DLL_EXPORTED
int
libintl_vswprintf (wchar_t *resultbuf, size_t length, const wchar_t *format, va_list args)
{
  if (wcschr (format, '$') == NULL)
    return system_vswprintf (resultbuf, length, format, args);
  else
    {
      size_t maxlength = length;
      wchar_t *result = libintl_vasnwprintf (resultbuf, &length, format, args);
      if (result != resultbuf)
	{
	  if (maxlength > 0)
	    {
	      size_t pruned_length =
		(length < maxlength ? length : maxlength - 1);
	      memcpy (resultbuf, result, pruned_length * sizeof (wchar_t));
	      resultbuf[pruned_length] = 0;
	    }
	  free (result);
	  /* Unlike vsnprintf, which has to return the number of character that
	     would have been produced if the resultbuf had been sufficiently
	     large, the vswprintf function has to return a negative value if
	     the resultbuf was not sufficiently large.  */
	  if (length >= maxlength)
	    return -1;
	}
      if (length > INT_MAX)
	{
	  errno = EOVERFLOW;
	  return -1;
	}
      else
	return length;
    }
}

DLL_EXPORTED
int
libintl_swprintf (wchar_t *resultbuf, size_t length, const wchar_t *format, ...)
{
  va_list args;
  int retval;

  va_start (args, format);
  retval = libintl_vswprintf (resultbuf, length, format, args);
  va_end (args);
  return retval;
}

#endif

#endif