include/vlc_fixups.h

   1 /*****************************************************************************
   2  * vlc_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 it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * 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 #if !defined (HAVE_GMTIME_R) || !defined (HAVE_LOCALTIME_R)
  30 # include <time.h> /* time_t */
  31 #endif
  32
  33 #ifndef HAVE_LLDIV
  34 typedef struct
  35 {
  36     long long quot; /* Quotient. */
  37     long long rem;  /* Remainder. */
  38 } lldiv_t;
  39 #endif
  40
  41 #if !defined(HAVE_GETENV) || \
  42     !defined(HAVE_USELOCALE)
  43 # include <stddef.h> /* NULL */
  44 #endif
  45
  46 #if !defined (HAVE_REWIND) || \
  47     !defined (HAVE_GETDELIM)
  48 # include <stdio.h> /* FILE */
  49 #endif
  50
  51 #if !defined (HAVE_POSIX_MEMALIGN) || \
  52     !defined (HAVE_STRLCPY) || \
  53     !defined (HAVE_STRNDUP) || \
  54     !defined (HAVE_STRNLEN)
  55 # include <stddef.h> /* size_t */
  56 #endif
  57
  58 #ifndef HAVE_VASPRINTF
  59 # include <stdarg.h> /* va_list */
  60 #endif
  61
  62 #if !defined (HAVE_GETDELIM) || \
  63     !defined (HAVE_GETPID)   || \
  64     !defined (HAVE_SWAB)
  65 # include <sys/types.h> /* ssize_t, pid_t */
  66 #endif
  67
  68 #if !defined (HAVE_DIRFD) || \
  69     !defined (HAVE_FDOPENDIR)
  70 # include <dirent.h>
  71 #endif
  72
  73 #ifdef __cplusplus
  74 # define VLC_NOTHROW throw ()
  75 extern "C" {
  76 #else
  77 # define VLC_NOTHROW
  78 #endif
  79
  80 /* stdio.h */
  81 #ifndef HAVE_ASPRINTF
  82 int asprintf (char **, const char *, ...);
  83 #endif
  84
  85 #ifndef HAVE_FLOCKFILE
  86 void flockfile (FILE *);
  87 int ftrylockfile (FILE *);
  88 void funlockfile (FILE *);
  89 int getc_unlocked (FILE *);
  90 int getchar_unlocked (void);
  91 int putc_unlocked (int, FILE *);
  92 int putchar_unlocked (int);
  93 #endif
  94
  95 #ifndef HAVE_GETDELIM
  96 ssize_t getdelim (char **, size_t *, int, FILE *);
  97 ssize_t getline (char **, size_t *, FILE *);
  98 #endif
  99
 100 #ifndef HAVE_REWIND
 101 void rewind (FILE *);
 102 #endif
 103
 104 #ifndef HAVE_VASPRINTF
 105 int vasprintf (char **, const char *, va_list);
 106 #endif
 107
 108 /* string.h */
 109 #ifndef HAVE_STRCASECMP
 110 int strcasecmp (const char *, const char *);
 111 #endif
 112
 113 #ifndef HAVE_STRCASESTR
 114 char *strcasestr (const char *, const char *);
 115 #endif
 116
 117 #ifndef HAVE_STRDUP
 118 char *strdup (const char *);
 119 #endif
 120
 121 #ifndef HAVE_STRVERSCMP
 122 int strverscmp (const char *, const char *);
 123 #endif
 124
 125 #ifndef HAVE_STRNLEN
 126 size_t strnlen (const char *, size_t);
 127 #endif
 128
 129 #ifndef HAVE_STRNDUP
 130 char *strndup (const char *, size_t);
 131 #endif
 132
 133 #ifndef HAVE_STRLCPY
 134 size_t strlcpy (char *, const char *, size_t);
 135 #endif
 136
 137 #ifndef HAVE_STRSEP
 138 char *strsep (char **, const char *);
 139 #endif
 140
 141 #ifndef HAVE_STRTOK_R
 142 char *strtok_r(char *, const char *, char **);
 143 #endif
 144
 145 /* stdlib.h */
 146 #ifndef HAVE_ATOF
 147 #ifndef __ANDROID__
 148 double atof (const char *);
 149 #endif
 150 #endif
 151
 152 #ifndef HAVE_ATOLL
 153 long long atoll (const char *);
 154 #endif
 155
 156 #ifndef HAVE_LLDIV
 157 lldiv_t lldiv (long long, long long);
 158 #endif
 159
 160 #ifndef HAVE_STRTOF
 161 #ifndef __ANDROID__
 162 float strtof (const char *, char **);
 163 #endif
 164 #endif
 165
 166 #ifndef HAVE_STRTOLL
 167 long long int strtoll (const char *, char **, int);
 168 #endif
 169
 170 /* time.h */
 171 #ifndef HAVE_GMTIME_R
 172 struct tm *gmtime_r (const time_t *, struct tm *);
 173 #endif
 174
 175 #ifndef HAVE_LOCALTIME_R
 176 struct tm *localtime_r (const time_t *, struct tm *);
 177 #endif
 178
 179 /* unistd.h */
 180 #ifndef HAVE_GETPID
 181 pid_t getpid (void) VLC_NOTHROW;
 182 #endif
 183
 184 #ifndef HAVE_FSYNC
 185 int fsync (int fd);
 186 #endif
 187
 188 /* dirent.h */
 189 #ifndef HAVE_DIRFD
 190 int (dirfd) (DIR *);
 191 #endif
 192
 193 #ifndef HAVE_FDOPENDIR
 194 DIR *fdopendir (int);
 195 #endif
 196
 197 #ifdef __cplusplus
 198 } /* extern "C" */
 199 #endif
 200
 201 /* stdlib.h */
 202 #ifndef HAVE_GETENV
 203 static inline char *getenv (const char *name)
 204 {
 205     (void)name;
 206     return NULL;
 207 }
 208 #endif
 209
 210 #ifndef HAVE_SETENV
 211 int setenv (const char *, const char *, int);
 212 int unsetenv (const char *);
 213 #endif
 214
 215 #ifndef HAVE_POSIX_MEMALIGN
 216 int posix_memalign (void **, size_t, size_t);
 217 #endif
 218
 219 /* locale.h */
 220 #ifndef HAVE_USELOCALE
 221 #define LC_ALL_MASK      0
 222 #define LC_NUMERIC_MASK  0
 223 #define LC_MESSAGES_MASK 0
 224 #define LC_GLOBAL_LOCALE ((locale_t)(uintptr_t)1)
 225 typedef void *locale_t;
 226 static inline locale_t uselocale(locale_t loc)
 227 {
 228     (void)loc;
 229     return NULL;
 230 }
 231 static inline void freelocale(locale_t loc)
 232 {
 233     (void)loc;
 234 }
 235 static inline locale_t newlocale(int mask, const char * locale, locale_t base)
 236 {
 237     (void)mask; (void)locale; (void)base;
 238     return NULL;
 239 }
 240 #endif
 241
 242 #if !defined (HAVE_STATIC_ASSERT)
 243 # define _Static_assert(x, s) ((void) sizeof (struct { unsigned:-!(x); }))
 244 # define static_assert _Static_assert
 245 #endif
 246
 247 /* Alignment of critical static data structures */
 248 #ifdef ATTRIBUTE_ALIGNED_MAX
 249 #   define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
 250 #else
 251 #   define ATTR_ALIGN(align)
 252 #endif
 253
 254 /* libintl support */
 255 #define _(str)            vlc_gettext (str)
 256 #define N_(str)           gettext_noop (str)
 257 #define gettext_noop(str) (str)
 258
 259 #ifdef __cplusplus
 260 extern "C" {
 261 #endif
 262
 263 #ifndef HAVE_SWAB
 264 void swab (const void *, void *, ssize_t);
 265 #endif
 266
 267 /* Socket stuff */
 268 #ifndef HAVE_INET_PTON
 269 int inet_pton(int, const char *, void *);
 270 const char *inet_ntop(int, const void *, char *, int);
 271 #endif
 272
 273 #ifndef HAVE_STRUCT_POLLFD
 274 enum
 275 {
 276     POLLIN=1,
 277     POLLOUT=2,
 278     POLLPRI=4,
 279     POLLERR=8,  // unsupported stub
 280     POLLHUP=16, // unsupported stub
 281     POLLNVAL=32 // unsupported stub
 282 };
 283
 284 struct pollfd
 285 {
 286     int fd;
 287     unsigned events;
 288     unsigned revents;
 289 };
 290 #endif
 291 #ifndef HAVE_POLL
 292 struct pollfd;
 293 int poll (struct pollfd *, unsigned, int);
 294 #endif
 295
 296 #ifndef HAVE_IF_NAMEINDEX
 297 #include <errno.h>
 298 struct if_nameindex
 299 {
 300     unsigned if_index;
 301     char    *if_name;
 302 };
 303 # ifndef HAVE_IF_NAMETOINDEX
 304 #  define if_nametoindex(name)   atoi(name)
 305 # endif
 306 # define if_nameindex()         (errno = ENOBUFS, NULL)
 307 # define if_freenameindex(list) (void)0
 308 #endif
 309
 310 /* search.h */
 311 #ifndef HAVE_SEARCH_H
 312 typedef struct entry {
 313     char *key;
 314     void *data;
 315 } ENTRY;
 316
 317 typedef enum {
 318     FIND, ENTER
 319 } ACTION;
 320
 321 typedef enum {
 322     preorder,
 323     postorder,
 324     endorder,
 325     leaf
 326 } VISIT;
 327
 328 void *tsearch( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 329 void *tfind( const void *key, const void **rootp, int(*cmp)(const void *, const void *) );
 330 void *tdelete( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 331 void twalk( const void *root, void(*action)(const void *nodep, VISIT which, int depth) );
 332 void tdestroy( void *root, void (*free_node)(void *nodep) );
 333 #else // HAVE_SEARCH_H
 334 # ifndef HAVE_TDESTROY
 335 #  define tdestroy vlc_tdestroy
 336 # endif
 337 #endif
 338
 339 /* Random numbers */
 340 #ifndef HAVE_NRAND48
 341 double erand48 (unsigned short subi[3]);
 342 long jrand48 (unsigned short subi[3]);
 343 long nrand48 (unsigned short subi[3]);
 344 #endif
 345
 346 #ifdef __cplusplus
 347 } /* extern "C" */
 348 #endif
 349
 350 #ifdef __OS2__
 351 # undef HAVE_FORK   /* Implementation of fork() is imperfect on OS/2 */
 352 #endif
 353
 354 /* math.h */
 355
 356 #ifndef HAVE_NANF
 357 #define nanf(tagp) NAN
 358 #endif
 359
 360 #endif /* !LIBVLC_FIXUPS_H */