vlc_fixups.h 6.9 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 41
#endif

#ifndef HAVE_VASPRINTF
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
42 43
# include <stdio.h>
# include <stdlib.h>
44 45 46
# include <stdarg.h>
static inline int vasprintf (char **strp, const char *fmt, va_list ap)
{
47
#ifndef UNDER_CE
48
    int len = vsnprintf (NULL, 0, fmt, ap) + 1;
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
49
    char *res = (char *)malloc (len);
50 51 52 53
    if (res == NULL)
        return -1;
    *strp = res;
    return vsprintf (res, fmt, ap);
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
#else
    /* HACK: vsnprintf in the WinCE API behaves like
     * 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
     *
     Guess we need no more than 50 bytes. */
    int n, size = 50;
    char *res, *np;

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

    while (1)
    {
        n = vsnprintf (res, size, fmt, ap);

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

        /* Else try again with more space. */
        if (n == -1)
            size *= 2;  /* twice the old size */

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

    }
#endif /* UNDER_CE */
95
}
96 97 98
#endif

#ifndef HAVE_ASPRINTF
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
99
# include <stdio.h>
100 101 102 103 104
# 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
105
    va_start (ap, fmt);
106 107 108 109
    ret = vasprintf (strp, fmt, ap);
    va_end (ap);
    return ret;
}
110 111
#endif

112
#ifndef HAVE_STRNLEN
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
113
# include <string.h>
114 115
static inline size_t strnlen (const char *str, size_t max)
{
Rafaël Carré's avatar
Rafaël Carré committed
116
    const char *end = (const char *) memchr (str, 0, max);
117 118 119 120
    return end ? (size_t)(end - str) : max;
}
#endif

121
#ifndef HAVE_STRNDUP
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
122 123
# include <string.h>
# include <stdlib.h>
124 125
static inline char *strndup (const char *str, size_t max)
{
126
    size_t len = strnlen (str, max);
Rafaël Carré's avatar
Rafaël Carré committed
127
    char *res = (char *) malloc (len + 1);
128 129 130 131 132 133 134
    if (res)
    {
        memcpy (res, str, len);
        res[len] = '\0';
    }
    return res;
}
135 136 137 138 139 140 141
#endif

#ifndef HAVE_STRLCPY
# define strlcpy vlc_strlcpy
#endif

#ifndef HAVE_STRTOF
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
142
# define strtof( a, b ) ((float)strtod (a, b))
143 144
#endif

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
145 146
#ifndef HAVE_ATOF
# define atof( str ) (strtod ((str), (char **)NULL, 10))
147 148 149 150 151 152
#endif

#ifndef HAVE_STRTOLL
# define strtoll vlc_strtoll
#endif

153
#ifndef HAVE_STRSEP
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
static inline char *vlc_strsep( char **ppsz_string, const char *psz_delimiters )
{
    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;
}
171 172
#endif

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
173 174 175 176
#ifndef HAVE_ATOLL
# define atoll( str ) (strtoll ((str), (char **)NULL, 10))
#endif

177
#ifndef HAVE_LLDIV
178 179 180 181 182 183 184 185 186 187
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;
}
188 189 190 191 192 193 194 195
#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
196
static inline char *getenv (const char *name)
197 198 199 200
{
    (void)name;
    return NULL;
}
201 202 203 204
#endif

#ifndef HAVE_STRCASECMP
# ifndef HAVE_STRICMP
205 206 207 208 209 210
#  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]);
211
        if (d || !s1[i]) return d;
212 213 214
    }
    return 0;
}
215 216 217 218 219 220 221
# else
#  define strcasecmp stricmp
# endif
#endif

#ifndef HAVE_STRNCASECMP
# ifndef HAVE_STRNICMP
222 223 224 225 226 227
#  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]);
228
        if (d || !s1[i]) return d;
229 230 231
    }
    return 0;
}
232 233 234 235 236 237 238 239 240 241 242 243 244
# else
#  define strncasecmp strnicmp
# endif
#endif

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

245 246 247 248
#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
249
static inline struct tm *localtime_r (const time_t *timep, struct tm *result)
250 251 252 253 254 255 256 257
{
    struct tm *s = localtime (timep);
    if (s == NULL)
        return NULL;

    *result = *s;
    return result;
}
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
258 259 260 261 262 263 264 265 266
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;
}
267 268
#endif

269 270 271 272 273 274 275
/* 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

276 277 278 279 280 281 282
#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

283
#ifdef WIN32
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
284
# include <dirent.h>
285 286 287 288 289
# define opendir Use_utf8_opendir_or_vlc_wopendir_instead!
# define readdir Use_utf8_readdir_or_vlc_wreaddir_instead!
# define closedir vlc_wclosedir
#endif

290
/* libintl support */
291
#define _(str) vlc_gettext (str)
292 293 294 295 296 297 298 299

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

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

300 301 302 303 304 305 306 307
#ifdef UNDER_CE
static inline void rewind ( FILE *stream )
{
    fseek(stream, 0L, SEEK_SET);
    clearerr(stream);
}
#endif

308
#endif /* !LIBVLC_FIXUPS_H */