vlc_fixups.h 9.98 KB
Newer Older
1 2 3
/*****************************************************************************
 * fixups.h: portability fixups included from config.h
 *****************************************************************************
4
 * Copyright © 1998-2008 the VideoLAN project
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, 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 General Public License for more details.
 *
 * You should have received a copy of the GNU 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.
 *****************************************************************************/

/**
 * \file
 * This file is a collection of portability fixes
 */

26 27 28
#ifndef LIBVLC_FIXUPS_H
# define LIBVLC_FIXUPS_H 1

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
29
#ifndef HAVE_STRDUP
30 31 32 33 34
# include <string.h>
# include <stdlib.h>
static inline char *strdup (const char *str)
{
    size_t len = strlen (str) + 1;
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
35
    char *res = (char *)malloc (len);
36 37 38
    if (res) memcpy (res, str, len);
    return res;
}
39 40
#endif

41
#ifdef WIN32
42 43
/* Windows' printf doesn't support %z modifiers, thus we need to rewrite
 * the format string in a wrapper. */
44
# include <string.h>
45
# include <stdlib.h>
46
static inline char *vlc_fix_format_string (const char *format)
47
{
48 49 50 51 52 53
    char *fmt;
# ifdef WIN64
    const char *src = format, *tmp;
    char *dst;
    size_t n = 0;
    while ((tmp = strstr (src, "%z")) != NULL)
54 55
    {
        n++;
56
        src = tmp + 2;
57
    }
58 59
    if (n == 0)
        return NULL;
60

61 62 63
    fmt = (char*)malloc (strlen (format) + n + 1);
    if (fmt == NULL)
        return NULL;
64

65 66
    src = format;
    dst = fmt;
67 68 69 70 71
    while ((tmp = strstr (src, "%z")) != NULL)
    {
        size_t d = tmp - src;
        memcpy (dst, src, d);
        dst += d;
72 73
        memcpy (dst, "%ll", 3);
        dst += 3;
74 75 76
        src = tmp + 2;
    }
    strcpy (dst, src);
77 78 79 80 81 82 83 84 85 86 87 88 89 90 91
# else
    char *f;
    if (strstr (format, "%z") == NULL)
        return NULL;

    fmt = strdup (format);
    if (fmt == NULL)
        return NULL;

    while ((f = strstr (fmt, "%z")) != NULL)
    {
       f[1] = 'l';
    }
# endif
    return fmt;
92 93 94 95 96 97 98
}

# include <stdio.h>
# include <stdarg.h>

static inline int vlc_vprintf (const char *format, va_list ap)
{
99 100 101
    char *fmt = vlc_fix_format_string (format);
    int ret = vprintf (fmt ? fmt : format, ap);
    free (fmt);
102 103 104 105 106 107
    return ret;
}
# define vprintf vlc_vprintf

static inline int vlc_vfprintf (FILE *stream, const char *format, va_list ap)
{
108 109 110
    char *fmt = vlc_fix_format_string (format);
    int ret = vfprintf (stream, fmt ? fmt : format, ap);
    free (fmt);
111 112 113 114 115 116
    return ret;
}
# define vfprintf vlc_vfprintf

static inline int vlc_vsprintf (char *str, const char *format, va_list ap)
{
117 118 119
    char *fmt = vlc_fix_format_string (format);
    int ret = vsprintf (str, fmt ? fmt : format, ap);
    free (fmt);
120 121 122 123 124 125
    return ret;
}
# define vsprintf vlc_vsprintf

static inline int vlc_vsnprintf (char *str, size_t size, const char *format, va_list ap)
{
126
    char *fmt = vlc_fix_format_string (format);
127
    int ret = vsnprintf (str, size, fmt ? fmt : format, ap);
128
    free (fmt);
129 130 131 132 133 134 135 136 137
    return ret;
}
# define vsnprintf vlc_vsnprintf

static inline int vlc_printf (const char *format, ...)
{
    va_list ap;
    int ret;
    va_start (ap, format);
138
    ret = vprintf (format, ap);
139 140 141 142 143 144 145 146 147 148
    va_end (ap);
    return ret;
}
# define printf(...) vlc_printf(__VA_ARGS__)

static inline int vlc_fprintf (FILE *stream, const char *format, ...)
{
    va_list ap;
    int ret;
    va_start (ap, format);
149
    ret = vfprintf (stream, format, ap);
150 151 152 153 154
    va_end (ap);
    return ret;
}
# define fprintf vlc_fprintf

155
#if 0
156 157 158 159 160
static inline int vlc_sprintf (char *str, const char *format, ...)
{
    va_list ap;
    int ret;
    va_start (ap, format);
161
    ret = vsprintf (str, format, ap);
162 163 164 165
    va_end (ap);
    return ret;
}
# define sprintf vlc_sprintf
166
#endif
167 168 169 170 171 172

static inline int vlc_snprintf (char *str, size_t size, const char *format, ...)
{
    va_list ap;
    int ret;
    va_start (ap, format);
173
    ret = vsnprintf (str, size, format, ap);
174 175 176 177 178 179 180 181 182 183
    va_end (ap);
    return ret;
}
# define snprintf vlc_snprintf

/* Make sure we don't use flawed vasprintf or asprintf either */
# undef HAVE_VASPRINTF
# undef HAVE_ASPRINTF
#endif

184
#ifndef HAVE_VASPRINTF
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
185 186
# include <stdio.h>
# include <stdlib.h>
187 188 189
# include <stdarg.h>
static inline int vasprintf (char **strp, const char *fmt, va_list ap)
{
190
#ifndef UNDER_CE
191
    int len = vsnprintf (NULL, 0, fmt, ap) + 1;
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
192
    char *res = (char *)malloc (len);
193 194 195
    if (res == NULL)
        return -1;
    *strp = res;
Ken Self's avatar
Ken Self committed
196
    return vsnprintf (res, len, fmt, ap);
197
#else
198
    /* HACK: vsnprintf in the WinCE API behaves like
199 200 201 202
     * the one in glibc 2.0 and doesn't return the number of characters
     * it needed to copy the string.
     * cf http://msdn.microsoft.com/en-us/library/1kt27hek.aspx
     * and cf the man page of vsnprintf
203 204 205
     *
     Guess we need no more than 50 bytes. */
    int n, size = 50;
206 207 208 209 210 211 212
    char *res, *np;

    if ((res = (char *) malloc (size)) == NULL)
        return -1;

    while (1)
    {
213
        n = vsnprintf (res, size, fmt, ap);
214 215 216 217 218 219 220 221 222

        /* If that worked, return the string. */
        if (n > -1 && n < size)
        {
            *strp = res;
            return n;
        }

        /* Else try again with more space. */
223
        size *= 2;  /* twice the old size */
224 225 226 227 228 229 230 231 232 233 234 235

        if ((np = (char *) realloc (res, size)) == NULL)
        {
            free(res);
            return -1;
        }
        else
        {
            res = np;
        }

    }
236
#endif /* UNDER_CE */
237
}
238 239 240
#endif

#ifndef HAVE_ASPRINTF
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
241
# include <stdio.h>
242 243 244 245 246
# include <stdarg.h>
static inline int asprintf (char **strp, const char *fmt, ...)
{
    va_list ap;
    int ret;
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
247
    va_start (ap, fmt);
248 249 250 251
    ret = vasprintf (strp, fmt, ap);
    va_end (ap);
    return ret;
}
252 253
#endif

254
#ifndef HAVE_STRNLEN
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
255
# include <string.h>
256 257
static inline size_t strnlen (const char *str, size_t max)
{
Rafaël Carré's avatar
Rafaël Carré committed
258
    const char *end = (const char *) memchr (str, 0, max);
259 260 261 262
    return end ? (size_t)(end - str) : max;
}
#endif

263
#ifndef HAVE_STRNDUP
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
264 265
# include <string.h>
# include <stdlib.h>
266 267
static inline char *strndup (const char *str, size_t max)
{
268
    size_t len = strnlen (str, max);
Rafaël Carré's avatar
Rafaël Carré committed
269
    char *res = (char *) malloc (len + 1);
270 271 272 273 274 275 276
    if (res)
    {
        memcpy (res, str, len);
        res[len] = '\0';
    }
    return res;
}
277 278 279 280 281 282 283
#endif

#ifndef HAVE_STRLCPY
# define strlcpy vlc_strlcpy
#endif

#ifndef HAVE_STRTOF
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
284
# define strtof( a, b ) ((float)strtod (a, b))
285 286
#endif

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
287 288
#ifndef HAVE_ATOF
# define atof( str ) (strtod ((str), (char **)NULL, 10))
289 290 291 292 293 294
#endif

#ifndef HAVE_STRTOLL
# define strtoll vlc_strtoll
#endif

295
#ifndef HAVE_STRSEP
Rémi Denis-Courmont's avatar
typo  
Rémi Denis-Courmont committed
296
static inline char *strsep( char **ppsz_string, const char *psz_delimiters )
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312
{
    char *psz_string = *ppsz_string;
    if( !psz_string )
        return NULL;

    char *p = strpbrk( psz_string, psz_delimiters );
    if( !p )
    {
        *ppsz_string = NULL;
        return psz_string;
    }
    *p++ = '\0';

    *ppsz_string = p;
    return psz_string;
}
313 314
#endif

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
315 316 317 318
#ifndef HAVE_ATOLL
# define atoll( str ) (strtoll ((str), (char **)NULL, 10))
#endif

319
#ifndef HAVE_LLDIV
320 321 322 323 324 325 326 327 328 329
typedef struct {
    long long quot; /* Quotient. */
    long long rem;  /* Remainder. */
} lldiv_t;

static inline lldiv_t lldiv (long long numer, long long denom)
{
    lldiv_t d = { .quot = numer / denom, .rem = numer % denom };
    return d;
}
330 331 332 333 334 335 336 337
#endif

#ifndef HAVE_SCANDIR
# define scandir vlc_scandir
# define alphasort vlc_alphasort
#endif

#ifndef HAVE_GETENV
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
338
static inline char *getenv (const char *name)
339 340 341 342
{
    (void)name;
    return NULL;
}
343 344 345 346
#endif

#ifndef HAVE_STRCASECMP
# ifndef HAVE_STRICMP
347 348 349 350 351 352
#  include <ctype.h>
static inline int strcasecmp (const char *s1, const char *s2)
{
    for (size_t i = 0;; i++)
    {
        int d = tolower (s1[i]) - tolower (s2[i]);
353
        if (d || !s1[i]) return d;
354 355 356
    }
    return 0;
}
357 358 359 360 361 362 363
# else
#  define strcasecmp stricmp
# endif
#endif

#ifndef HAVE_STRNCASECMP
# ifndef HAVE_STRNICMP
364 365 366 367 368 369
#  include <ctype.h>
static inline int strncasecmp (const char *s1, const char *s2, size_t n)
{
    for (size_t i = 0; i < n; i++)
    {
        int d = tolower (s1[i]) - tolower (s2[i]);
370
        if (d || !s1[i]) return d;
371 372 373
    }
    return 0;
}
374 375 376 377 378 379 380 381 382 383 384 385 386
# else
#  define strncasecmp strnicmp
# endif
#endif

#ifndef HAVE_STRCASESTR
# ifndef HAVE_STRISTR
#  define strcasestr vlc_strcasestr
# else
#  define strcasestr stristr
# endif
#endif

387 388 389 390
#ifndef HAVE_LOCALTIME_R
/* If localtime_r() is not provided, we assume localtime() uses
 * thread-specific storage. */
# include <time.h>
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
391
static inline struct tm *localtime_r (const time_t *timep, struct tm *result)
392 393 394 395 396 397 398 399
{
    struct tm *s = localtime (timep);
    if (s == NULL)
        return NULL;

    *result = *s;
    return result;
}
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
400 401 402 403 404 405 406 407 408
static inline struct tm *gmtime_r (const time_t *timep, struct tm *result)
{
    struct tm *s = gmtime (timep);
    if (s == NULL)
        return NULL;

    *result = *s;
    return result;
}
409 410
#endif

411 412 413 414 415 416 417
/* Alignment of critical static data structures */
#ifdef ATTRIBUTE_ALIGNED_MAX
#   define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
#else
#   define ATTR_ALIGN(align)
#endif

418 419 420 421 422 423 424
#ifndef HAVE_USELOCALE
typedef void *locale_t;
# define newlocale( a, b, c ) ((locale_t)0)
# define uselocale( a ) ((locale_t)0)
# define freelocale( a ) (void)0
#endif

425
#ifdef WIN32
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
426
# include <dirent.h>
427 428 429 430 431
# define opendir Use_utf8_opendir_or_vlc_wopendir_instead!
# define readdir Use_utf8_readdir_or_vlc_wreaddir_instead!
# define closedir vlc_wclosedir
#endif

432
/* libintl support */
433
#define _(str) vlc_gettext (str)
434 435 436 437 438 439 440 441

#if defined (ENABLE_NLS)
# include <libintl.h>
#endif

#define N_(str) gettext_noop (str)
#define gettext_noop(str) (str)

442 443 444 445 446 447 448 449
#ifdef UNDER_CE
static inline void rewind ( FILE *stream )
{
    fseek(stream, 0L, SEEK_SET);
    clearerr(stream);
}
#endif

450
#endif /* !LIBVLC_FIXUPS_H */