include/vlc_fixups.h

   1 /*****************************************************************************
   2  * fixups.h: portability fixups included from config.h
   3  *****************************************************************************
   4  * Copyright © 1998-2008 the VideoLAN project
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20
  21 /**
  22  * \file
  23  * This file is a collection of portability fixes
  24  */
  25
  26 #ifndef LIBVLC_FIXUPS_H
  27 # define LIBVLC_FIXUPS_H 1
  28
  29 #ifndef HAVE_STRDUP
  30 # include <string.h>
  31 # include <stdlib.h>
  32 static inline char *strdup (const char *str)
  33 {
  34     size_t len = strlen (str) + 1;
  35     char *res = (char *)malloc (len);
  36     if (res) memcpy (res, str, len);
  37     return res;
  38 }
  39 #endif
  40
  41 #ifndef HAVE_VASPRINTF
  42 # include <stdio.h>
  43 # include <stdlib.h>
  44 # include <stdarg.h>
  45 static inline int vasprintf (char **strp, const char *fmt, va_list ap)
  46 {
  47     int len = vsnprintf (NULL, 0, fmt, ap) + 1;
  48     char *res = (char *)malloc (len);
  49     if (res == NULL)
  50         return -1;
  51     *strp = res;
  52     return vsprintf (res, fmt, ap);
  53 }
  54 #endif
  55
  56 #ifndef HAVE_ASPRINTF
  57 # include <stdio.h>
  58 # include <stdarg.h>
  59 static inline int asprintf (char **strp, const char *fmt, ...)
  60 {
  61     va_list ap;
  62     int ret;
  63     va_start (ap, fmt);
  64     ret = vasprintf (strp, fmt, ap);
  65     va_end (ap);
  66     return ret;
  67 }
  68 #endif
  69
  70 #ifndef HAVE_STRNLEN
  71 # include <string.h>
  72 static inline size_t strnlen (const char *str, size_t max)
  73 {
  74     const char *end = (const char *) memchr (str, 0, max);
  75     return end ? (size_t)(end - str) : max;
  76 }
  77 #endif
  78
  79 #ifndef HAVE_STRNDUP
  80 # include <string.h>
  81 # include <stdlib.h>
  82 static inline char *strndup (const char *str, size_t max)
  83 {
  84     size_t len = strnlen (str, max);
  85     char *res = (char *) malloc (len + 1);
  86     if (res)
  87     {
  88         memcpy (res, str, len);
  89         res[len] = '\0';
  90     }
  91     return res;
  92 }
  93 #endif
  94
  95 #ifndef HAVE_STRLCPY
  96 # define strlcpy vlc_strlcpy
  97 #endif
  98
  99 #ifndef HAVE_STRTOF
 100 # define strtof( a, b ) ((float)strtod (a, b))
 101 #endif
 102
 103 #ifndef HAVE_ATOF
 104 # define atof( str ) (strtod ((str), (char **)NULL, 10))
 105 #endif
 106
 107 #ifndef HAVE_STRTOLL
 108 # define strtoll vlc_strtoll
 109 #endif
 110
 111 #ifndef HAVE_ATOLL
 112 # define atoll( str ) (strtoll ((str), (char **)NULL, 10))
 113 #endif
 114
 115 #ifndef HAVE_LLDIV
 116 typedef struct {
 117     long long quot; /* Quotient. */
 118     long long rem;  /* Remainder. */
 119 } lldiv_t;
 120
 121 static inline lldiv_t lldiv (long long numer, long long denom)
 122 {
 123     lldiv_t d = { .quot = numer / denom, .rem = numer % denom };
 124     return d;
 125 }
 126 #endif
 127
 128 #ifndef HAVE_SCANDIR
 129 # define scandir vlc_scandir
 130 # define alphasort vlc_alphasort
 131 #endif
 132
 133 #ifndef HAVE_GETENV
 134 static inline getenv (const char *name)
 135 {
 136     (void)name;
 137     return NULL;
 138 }
 139 #endif
 140
 141 #ifndef HAVE_STRCASECMP
 142 # ifndef HAVE_STRICMP
 143 #  include <ctype.h>
 144 static inline int strcasecmp (const char *s1, const char *s2)
 145 {
 146     for (size_t i = 0;; i++)
 147     {
 148         int d = tolower (s1[i]) - tolower (s2[i]);
 149         if (d || !s1[i]) return d;
 150     }
 151     return 0;
 152 }
 153 # else
 154 #  define strcasecmp stricmp
 155 # endif
 156 #endif
 157
 158 #ifndef HAVE_STRNCASECMP
 159 # ifndef HAVE_STRNICMP
 160 #  include <ctype.h>
 161 static inline int strncasecmp (const char *s1, const char *s2, size_t n)
 162 {
 163     for (size_t i = 0; i < n; i++)
 164     {
 165         int d = tolower (s1[i]) - tolower (s2[i]);
 166         if (d || !s1[i]) return d;
 167     }
 168     return 0;
 169 }
 170 # else
 171 #  define strncasecmp strnicmp
 172 # endif
 173 #endif
 174
 175 #ifndef HAVE_STRCASESTR
 176 # ifndef HAVE_STRISTR
 177 #  define strcasestr vlc_strcasestr
 178 # else
 179 #  define strcasestr stristr
 180 # endif
 181 #endif
 182
 183 #ifndef HAVE_LOCALTIME_R
 184 /* If localtime_r() is not provided, we assume localtime() uses
 185  * thread-specific storage. */
 186 # include <time.h>
 187 static inline struct tm *localtime_r (const time_t *timep, struct tm *result)
 188 {
 189     struct tm *s = localtime (timep);
 190     if (s == NULL)
 191         return NULL;
 192
 193     *result = *s;
 194     return result;
 195 }
 196 static inline struct tm *gmtime_r (const time_t *timep, struct tm *result)
 197 {
 198     struct tm *s = gmtime (timep);
 199     if (s == NULL)
 200         return NULL;
 201
 202     *result = *s;
 203     return result;
 204 }
 205 #endif
 206
 207 /* Alignment of critical static data structures */
 208 #ifdef ATTRIBUTE_ALIGNED_MAX
 209 #   define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
 210 #else
 211 #   define ATTR_ALIGN(align)
 212 #endif
 213
 214 #ifndef HAVE_USELOCALE
 215 typedef void *locale_t;
 216 # define newlocale( a, b, c ) ((locale_t)0)
 217 # define uselocale( a ) ((locale_t)0)
 218 # define freelocale( a ) (void)0
 219 #endif
 220
 221 #ifdef WIN32
 222 # include <dirent.h>
 223 # define opendir Use_utf8_opendir_or_vlc_wopendir_instead!
 224 # define readdir Use_utf8_readdir_or_vlc_wreaddir_instead!
 225 # define closedir vlc_wclosedir
 226 #endif
 227
 228 /* libintl support */
 229 #define _(str) vlc_gettext (str)
 230
 231 #if defined (ENABLE_NLS)
 232 # include <libintl.h>
 233 #endif
 234
 235 #define N_(str) gettext_noop (str)
 236 #define gettext_noop(str) (str)
 237
 238 #endif /* !LIBVLC_FIXUPS_H */