glib.h

   1 /* GLIB - Library of useful routines for C programming
   2  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19 #ifndef __G_LIB_H__
  20 #define __G_LIB_H__
  21
  22 /* system specific config file glibconfig.h provides definitions for
  23  * the extrema of many of the standard types. These are:
  24  *
  25  *  G_MINSHORT, G_MAXSHORT
  26  *  G_MININT, G_MAXINT
  27  *  G_MINLONG, G_MAXLONG
  28  *  G_MINFLOAT, G_MAXFLOAT
  29  *  G_MINDOUBLE, G_MAXDOUBLE
  30  *
  31  * It also provides the following typedefs:
  32  *
  33  *  gint8, guint8
  34  *  gint16, guint16
  35  *  gint32, guint32
  36  *  gint64, guint64
  37  *
  38  * It defines the G_BYTE_ORDER symbol to one of G_*_ENDIAN (see later in
  39  * this file).
  40  *
  41  * And it provides a way to store and retrieve a `gint' in/from a `gpointer'.
  42  * This is useful to pass an integer instead of a pointer to a callback.
  43  *
  44  *  GINT_TO_POINTER(i), GUINT_TO_POINTER(i)
  45  *  GPOINTER_TO_INT(p), GPOINTER_TO_UINT(p)
  46  *
  47  * Finally, it provide the following wrappers to STDC functions:
  48  *
  49  *  g_ATEXIT
  50  *    To register hooks which are executed on exit().
  51  *    Usually a wrapper for STDC atexit.
  52  *
  53  *  void *g_memmove(void *dest, const void *src, guint count);
  54  *    A wrapper for STDC memmove, or an implementation, if memmove doesn't
  55  *    exist.  The prototype looks like the above, give or take a const,
  56  *    or size_t.
  57  */
  58 #include <glibconfig.h>
  59
  60 /* include varargs functions for assertment macros
  61  */
  62 #include <stdarg.h>
  63
  64 /* optionally feature DMALLOC memory allocation debugger
  65  */
  66 #ifdef USE_DMALLOC
  67 #include "dmalloc.h"
  68 #endif
  69
  70
  71 #ifdef NATIVE_WIN32
  72
  73 /* On native Win32, directory separator is the backslash, and search path
  74  * separator is the semicolon.
  75  */
  76 #define G_DIR_SEPARATOR '\\'
  77 #define G_DIR_SEPARATOR_S "\\"
  78 #define G_SEARCHPATH_SEPARATOR ';'
  79 #define G_SEARCHPATH_SEPARATOR_S ";"
  80
  81 #else  /* !NATIVE_WIN32 */
  82
  83 /* Unix */
  84
  85 #define G_DIR_SEPARATOR '/'
  86 #define G_DIR_SEPARATOR_S "/"
  87 #define G_SEARCHPATH_SEPARATOR ':'
  88 #define G_SEARCHPATH_SEPARATOR_S ":"
  89
  90 #endif /* !NATIVE_WIN32 */
  91
  92 #ifdef __cplusplus
  93 extern "C" {
  94 #endif /* __cplusplus */
  95
  96
  97 /* Provide definitions for some commonly used macros.
  98  *  Some of them are only provided if they haven't already
  99  *  been defined. It is assumed that if they are already
 100  *  defined then the current definition is correct.
 101  */
 102 #ifndef NULL
 103 #define NULL    ((void*) 0)
 104 #endif
 105
 106 #ifndef FALSE
 107 #define FALSE   (0)
 108 #endif
 109
 110 #ifndef TRUE
 111 #define TRUE    (!FALSE)
 112 #endif
 113
 114 #undef  MAX
 115 #define MAX(a, b)  (((a) > (b)) ? (a) : (b))
 116
 117 #undef  MIN
 118 #define MIN(a, b)  (((a) < (b)) ? (a) : (b))
 119
 120 #undef  ABS
 121 #define ABS(a)     (((a) < 0) ? -(a) : (a))
 122
 123 #undef  CLAMP
 124 #define CLAMP(x, low, high)  (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
 125
 126
 127 /* Define G_VA_COPY() to do the right thing for copying va_list variables.
 128  * glibconfig.h may have already defined G_VA_COPY as va_copy or __va_copy.
 129  */
 130 #if !defined (G_VA_COPY)
 131 #  if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
 132 #  define G_VA_COPY(ap1, ap2)     (*(ap1) = *(ap2))
 133 #  elif defined (G_VA_COPY_AS_ARRAY)
 134 #  define G_VA_COPY(ap1, ap2)     g_memmove ((ap1), (ap2), sizeof (va_list))
 135 #  else /* va_list is a pointer */
 136 #  define G_VA_COPY(ap1, ap2)     ((ap1) = (ap2))
 137 #  endif /* va_list is a pointer */
 138 #endif /* !G_VA_COPY */
 139
 140
 141 /* Provide convenience macros for handling structure
 142  * fields through their offsets.
 143  */
 144 #define G_STRUCT_OFFSET(struct_type, member)    \
 145     ((gulong) ((gchar*) &((struct_type*) 0)->member))
 146 #define G_STRUCT_MEMBER_P(struct_p, struct_offset)   \
 147     ((gpointer) ((gchar*) (struct_p) + (gulong) (struct_offset)))
 148 #define G_STRUCT_MEMBER(member_type, struct_p, struct_offset)   \
 149     (*(member_type*) G_STRUCT_MEMBER_P ((struct_p), (struct_offset)))
 150
 151
 152 /* inlining hassle. for compilers that don't allow the `inline' keyword,
 153  * mostly because of strict ANSI C compliance or dumbness, we try to fall
 154  * back to either `__inline__' or `__inline'.
 155  * we define G_CAN_INLINE, if the compiler seems to be actually
 156  * *capable* to do function inlining, in which case inline function bodys
 157  * do make sense. we also define G_INLINE_FUNC to properly export the
 158  * function prototypes if no inlining can be performed.
 159  * we special case most of the stuff, so inline functions can have a normal
 160  * implementation by defining G_INLINE_FUNC to extern and G_CAN_INLINE to 1.
 161  */
 162 #ifndef G_INLINE_FUNC
 163 #  define G_CAN_INLINE 1
 164 #endif
 165 #ifdef G_HAVE_INLINE
 166 #  if defined (__GNUC__) && defined (__STRICT_ANSI__)
 167 #    undef inline
 168 #    define inline __inline__
 169 #  endif
 170 #else /* !G_HAVE_INLINE */
 171 #  undef inline
 172 #  if defined (G_HAVE___INLINE__)
 173 #    define inline __inline__
 174 #  else /* !inline && !__inline__ */
 175 #    if defined (G_HAVE___INLINE)
 176 #      define inline __inline
 177 #    else /* !inline && !__inline__ && !__inline */
 178 #      define inline /* don't inline, then */
 179 #      ifndef G_INLINE_FUNC
 180 #        undef G_CAN_INLINE
 181 #      endif
 182 #    endif
 183 #  endif
 184 #endif
 185 #ifndef G_INLINE_FUNC
 186 #  ifdef __GNUC__
 187 #    ifdef __OPTIMIZE__
 188 #      define G_INLINE_FUNC extern inline
 189 #    else
 190 #      undef G_CAN_INLINE
 191 #      define G_INLINE_FUNC extern
 192 #    endif
 193 #  else /* !__GNUC__ */
 194 #    ifdef G_CAN_INLINE
 195 #      define G_INLINE_FUNC static inline
 196 #    else
 197 #      define G_INLINE_FUNC extern
 198 #    endif
 199 #  endif /* !__GNUC__ */
 200 #endif /* !G_INLINE_FUNC */
 201
 202
 203 /* Provide simple macro statement wrappers (adapted from Perl):
 204  *  G_STMT_START { statements; } G_STMT_END;
 205  *  can be used as a single statement, as in
 206  *  if (x) G_STMT_START { ... } G_STMT_END; else ...
 207  *
 208  *  For gcc we will wrap the statements within `({' and `})' braces.
 209  *  For SunOS they will be wrapped within `if (1)' and `else (void) 0',
 210  *  and otherwise within `do' and `while (0)'.
 211  */
 212 #if !(defined (G_STMT_START) && defined (G_STMT_END))
 213 #  if defined (__GNUC__) && !defined (__STRICT_ANSI__) && !defined (__cplusplus)
 214 #    define G_STMT_START        (void)(
 215 #    define G_STMT_END          )
 216 #  else
 217 #    if (defined (sun) || defined (__sun__))
 218 #      define G_STMT_START      if (1)
 219 #      define G_STMT_END        else (void)0
 220 #    else
 221 #      define G_STMT_START      do
 222 #      define G_STMT_END        while (0)
 223 #    endif
 224 #  endif
 225 #endif
 226
 227
 228 /* Provide macros to feature the GCC function attribute.
 229  */
 230 #if     __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
 231 #define G_GNUC_PRINTF( format_idx, arg_idx )    \
 232   __attribute__((format (printf, format_idx, arg_idx)))
 233 #define G_GNUC_SCANF( format_idx, arg_idx )     \
 234   __attribute__((format (scanf, format_idx, arg_idx)))
 235 #define G_GNUC_FORMAT( arg_idx )                \
 236   __attribute__((format_arg (arg_idx)))
 237 #define G_GNUC_NORETURN                         \
 238   __attribute__((noreturn))
 239 #define G_GNUC_CONST                            \
 240   __attribute__((const))
 241 #define G_GNUC_UNUSED                           \
 242   __attribute__((unused))
 243 #else   /* !__GNUC__ */
 244 #define G_GNUC_PRINTF( format_idx, arg_idx )
 245 #define G_GNUC_SCANF( format_idx, arg_idx )
 246 #define G_GNUC_FORMAT( arg_idx )
 247 #define G_GNUC_NORETURN
 248 #define G_GNUC_CONST
 249 #define G_GNUC_UNUSED
 250 #endif  /* !__GNUC__ */
 251
 252
 253 /* Wrap the gcc __PRETTY_FUNCTION__ and __FUNCTION__ variables with
 254  * macros, so we can refer to them as strings unconditionally.
 255  */
 256 #ifdef  __GNUC__
 257 #define G_GNUC_FUNCTION         (__FUNCTION__)
 258 #define G_GNUC_PRETTY_FUNCTION  (__PRETTY_FUNCTION__)
 259 #else   /* !__GNUC__ */
 260 #define G_GNUC_FUNCTION         ("")
 261 #define G_GNUC_PRETTY_FUNCTION  ("")
 262 #endif  /* !__GNUC__ */
 263
 264 /* we try to provide a usefull equivalent for ATEXIT if it is
 265  * not defined, but use is actually abandoned. people should
 266  * use g_atexit() instead.
 267  */
 268 #ifndef ATEXIT
 269 # define ATEXIT(proc)   g_ATEXIT(proc)
 270 #else
 271 # define G_NATIVE_ATEXIT
 272 #endif /* ATEXIT */
 273
 274 /* Hacker macro to place breakpoints for elected machines.
 275  * Actual use is strongly deprecated of course ;)
 276  */
 277 #if defined (__i386__) && defined (__GNUC__) && __GNUC__ >= 2
 278 #define G_BREAKPOINT()          G_STMT_START{ __asm__ __volatile__ ("int $03"); }G_STMT_END
 279 #elif defined (__alpha__) && defined (__GNUC__) && __GNUC__ >= 2
 280 #define G_BREAKPOINT()          G_STMT_START{ __asm__ __volatile__ ("bpt"); }G_STMT_END
 281 #else   /* !__i386__ && !__alpha__ */
 282 #define G_BREAKPOINT()
 283 #endif  /* __i386__ */
 284
 285
 286 /* Provide macros for easily allocating memory. The macros
 287  *  will cast the allocated memory to the specified type
 288  *  in order to avoid compiler warnings. (Makes the code neater).
 289  */
 290
 291 #ifdef __DMALLOC_H__
 292 #  define g_new(type, count)            (ALLOC (type, count))
 293 #  define g_new0(type, count)           (CALLOC (type, count))
 294 #  define g_renew(type, mem, count)     (REALLOC (mem, type, count))
 295 #else /* __DMALLOC_H__ */
 296 #  define g_new(type, count)      \
 297       ((type *) g_malloc ((unsigned) sizeof (type) * (count)))
 298 #  define g_new0(type, count)     \
 299       ((type *) g_malloc0 ((unsigned) sizeof (type) * (count)))
 300 #  define g_renew(type, mem, count)       \
 301       ((type *) g_realloc (mem, (unsigned) sizeof (type) * (count)))
 302 #endif /* __DMALLOC_H__ */
 303
 304 #define g_mem_chunk_create(type, pre_alloc, alloc_type) ( \
 305   g_mem_chunk_new (#type " mem chunks (" #pre_alloc ")", \
 306                    sizeof (type), \
 307                    sizeof (type) * (pre_alloc), \
 308                    (alloc_type)) \
 309 )
 310 #define g_chunk_new(type, chunk)        ( \
 311   (type *) g_mem_chunk_alloc (chunk) \
 312 )
 313 #define g_chunk_new0(type, chunk)       ( \
 314   (type *) g_mem_chunk_alloc0 (chunk) \
 315 )
 316 #define g_chunk_free(mem, mem_chunk)    G_STMT_START { \
 317   g_mem_chunk_free ((mem_chunk), (mem)); \
 318 } G_STMT_END
 319
 320
 321 #define g_string(x) #x
 322
 323
 324 /* Provide macros for error handling. The "assert" macros will
 325  *  exit on failure. The "return" macros will exit the current
 326  *  function. Two different definitions are given for the macros
 327  *  if G_DISABLE_ASSERT is not defined, in order to support gcc's
 328  *  __PRETTY_FUNCTION__ capability.
 329  */
 330
 331 #ifdef G_DISABLE_ASSERT
 332
 333 #define g_assert(expr)
 334 #define g_assert_not_reached()
 335
 336 #else /* !G_DISABLE_ASSERT */
 337
 338 #ifdef __GNUC__
 339
 340 #define g_assert(expr)                  G_STMT_START{           \
 341      if (!(expr))                                               \
 342        g_log (G_LOG_DOMAIN,                                     \
 343               G_LOG_LEVEL_ERROR,                                \
 344               "file %s: line %d (%s): assertion failed: (%s)",  \
 345               __FILE__,                                         \
 346               __LINE__,                                         \
 347               __PRETTY_FUNCTION__,                              \
 348               #expr);                   }G_STMT_END
 349
 350 #define g_assert_not_reached()          G_STMT_START{           \
 351      g_log (G_LOG_DOMAIN,                                       \
 352             G_LOG_LEVEL_ERROR,                                  \
 353             "file %s: line %d (%s): should not be reached",     \
 354             __FILE__,                                           \
 355             __LINE__,                                           \
 356             __PRETTY_FUNCTION__);       }G_STMT_END
 357
 358 #else /* !__GNUC__ */
 359
 360 #define g_assert(expr)                  G_STMT_START{           \
 361      if (!(expr))                                               \
 362        g_log (G_LOG_DOMAIN,                                     \
 363               G_LOG_LEVEL_ERROR,                                \
 364               "file %s: line %d: assertion failed: (%s)",       \
 365               __FILE__,                                         \
 366               __LINE__,                                         \
 367               #expr);                   }G_STMT_END
 368
 369 #define g_assert_not_reached()          G_STMT_START{   \
 370      g_log (G_LOG_DOMAIN,                               \
 371             G_LOG_LEVEL_ERROR,                          \
 372             "file %s: line %d: should not be reached",  \
 373             __FILE__,                                   \
 374             __LINE__);          }G_STMT_END
 375
 376 #endif /* __GNUC__ */
 377
 378 #endif /* !G_DISABLE_ASSERT */
 379
 380
 381 #ifdef G_DISABLE_CHECKS
 382
 383 #define g_return_if_fail(expr)
 384 #define g_return_val_if_fail(expr,val)
 385
 386 #else /* !G_DISABLE_CHECKS */
 387
 388 #ifdef __GNUC__
 389
 390 #define g_return_if_fail(expr)          G_STMT_START{                   \
 391      if (!(expr))                                                       \
 392        {                                                                \
 393          g_log (G_LOG_DOMAIN,                                           \
 394                 G_LOG_LEVEL_CRITICAL,                                   \
 395                 "file %s: line %d (%s): assertion `%s' failed.",        \
 396                 __FILE__,                                               \
 397                 __LINE__,                                               \
 398                 __PRETTY_FUNCTION__,                                    \
 399                 #expr);                                                 \
 400          return;                                                        \
 401        };                               }G_STMT_END
 402
 403 #define g_return_val_if_fail(expr,val)  G_STMT_START{                   \
 404      if (!(expr))                                                       \
 405        {                                                                \
 406          g_log (G_LOG_DOMAIN,                                           \
 407                 G_LOG_LEVEL_CRITICAL,                                   \
 408                 "file %s: line %d (%s): assertion `%s' failed.",        \
 409                 __FILE__,                                               \
 410                 __LINE__,                                               \
 411                 __PRETTY_FUNCTION__,                                    \
 412                 #expr);                                                 \
 413          return val;                                                    \
 414        };                               }G_STMT_END
 415
 416 #else /* !__GNUC__ */
 417
 418 #define g_return_if_fail(expr)          G_STMT_START{           \
 419      if (!(expr))                                               \
 420        {                                                        \
 421          g_log (G_LOG_DOMAIN,                                   \
 422                 G_LOG_LEVEL_CRITICAL,                           \
 423                 "file %s: line %d: assertion `%s' failed.",     \
 424                 __FILE__,                                       \
 425                 __LINE__,                                       \
 426                 #expr);                                         \
 427          return;                                                \
 428        };                               }G_STMT_END
 429
 430 #define g_return_val_if_fail(expr, val) G_STMT_START{           \
 431      if (!(expr))                                               \
 432        {                                                        \
 433          g_log (G_LOG_DOMAIN,                                   \
 434                 G_LOG_LEVEL_CRITICAL,                           \
 435                 "file %s: line %d: assertion `%s' failed.",     \
 436                 __FILE__,                                       \
 437                 __LINE__,                                       \
 438                 #expr);                                         \
 439          return val;                                            \
 440        };                               }G_STMT_END
 441
 442 #endif /* !__GNUC__ */
 443
 444 #endif /* !G_DISABLE_CHECKS */
 445
 446
 447 /* Provide type definitions for commonly used types.
 448  *  These are useful because a "gint8" can be adjusted
 449  *  to be 1 byte (8 bits) on all platforms. Similarly and
 450  *  more importantly, "gint32" can be adjusted to be
 451  *  4 bytes (32 bits) on all platforms.
 452  */
 453
 454 typedef char   gchar;
 455 typedef short  gshort;
 456 typedef long   glong;
 457 typedef int    gint;
 458 typedef gint   gboolean;
 459
 460 typedef unsigned char   guchar;
 461 typedef unsigned short  gushort;
 462 typedef unsigned long   gulong;
 463 typedef unsigned int    guint;
 464
 465 typedef float   gfloat;
 466 typedef double  gdouble;
 467
 468 /* HAVE_LONG_DOUBLE doesn't work correctly on all platforms.
 469  * Since gldouble isn't used anywhere, just disable it for now */
 470
 471 #if 0
 472 #ifdef HAVE_LONG_DOUBLE
 473 typedef long double gldouble;
 474 #else /* HAVE_LONG_DOUBLE */
 475 typedef double gldouble;
 476 #endif /* HAVE_LONG_DOUBLE */
 477 #endif /* 0 */
 478
 479 typedef void* gpointer;
 480 typedef const void *gconstpointer;
 481
 482
 483 typedef gint32  gssize;
 484 typedef guint32 gsize;
 485 typedef guint32 GQuark;
 486 typedef gint32  GTime;
 487
 488
 489 /* Portable endian checks and conversions
 490  *
 491  * glibconfig.h defines G_BYTE_ORDER which expands to one of
 492  * the below macros.
 493  */
 494 #define G_LITTLE_ENDIAN 1234
 495 #define G_BIG_ENDIAN    4321
 496 #define G_PDP_ENDIAN    3412            /* unused, need specific PDP check */
 497
 498
 499 /* Basic bit swapping functions
 500  */
 501 #define GUINT16_SWAP_LE_BE_CONSTANT(val)        ((guint16) ( \
 502     (((guint16) (val) & (guint16) 0x00ffU) << 8) | \
 503     (((guint16) (val) & (guint16) 0xff00U) >> 8)))
 504 #define GUINT32_SWAP_LE_BE_CONSTANT(val)        ((guint32) ( \
 505     (((guint32) (val) & (guint32) 0x000000ffU) << 24) | \
 506     (((guint32) (val) & (guint32) 0x0000ff00U) <<  8) | \
 507     (((guint32) (val) & (guint32) 0x00ff0000U) >>  8) | \
 508     (((guint32) (val) & (guint32) 0xff000000U) >> 24)))
 509
 510 /* Intel specific stuff for speed
 511  */
 512 #if defined (__i386__) && defined (__GNUC__) && __GNUC__ >= 2
 513 #  define GUINT16_SWAP_LE_BE_X86(val) \
 514      (__extension__                                     \
 515       ({ register guint16 __v;                          \
 516          if (__builtin_constant_p (val))                \
 517            __v = GUINT16_SWAP_LE_BE_CONSTANT (val);     \
 518          else                                           \
 519            __asm__ __const__ ("rorw $8, %w0"            \
 520                               : "=r" (__v)              \
 521                               : "0" ((guint16) (val))); \
 522         __v; }))
 523 #  define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_X86 (val))
 524 #  if !defined(__i486__) && !defined(__i586__) \
 525       && !defined(__pentium__) && !defined(__i686__) && !defined(__pentiumpro__)
 526 #     define GUINT32_SWAP_LE_BE_X86(val) \
 527         (__extension__                                          \
 528          ({ register guint32 __v;                               \
 529             if (__builtin_constant_p (val))                     \
 530               __v = GUINT32_SWAP_LE_BE_CONSTANT (val);          \
 531           else                                                  \
 532             __asm__ __const__ ("rorw $8, %w0\n\t"               \
 533                                "rorl $16, %0\n\t"               \
 534                                "rorw $8, %w0"                   \
 535                                : "=r" (__v)                     \
 536                                : "0" ((guint32) (val)));        \
 537         __v; }))
 538 #  else /* 486 and higher has bswap */
 539 #     define GUINT32_SWAP_LE_BE_X86(val) \
 540         (__extension__                                          \
 541          ({ register guint32 __v;                               \
 542             if (__builtin_constant_p (val))                     \
 543               __v = GUINT32_SWAP_LE_BE_CONSTANT (val);          \
 544           else                                                  \
 545             __asm__ __const__ ("bswap %0"                       \
 546                                : "=r" (__v)                     \
 547                                : "0" ((guint32) (val)));        \
 548         __v; }))
 549 #  endif /* processor specific 32-bit stuff */
 550 #  define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_X86 (val))
 551 #else /* !__i386__ */
 552 #  define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
 553 #  define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val))
 554 #endif /* __i386__ */
 555
 556 #ifdef G_HAVE_GINT64
 557 #  define GUINT64_SWAP_LE_BE_CONSTANT(val)      ((guint64) ( \
 558       (((guint64) (val) &                                               \
 559         (guint64) G_GINT64_CONSTANT(0x00000000000000ffU)) << 56) |      \
 560       (((guint64) (val) &                                               \
 561         (guint64) G_GINT64_CONSTANT(0x000000000000ff00U)) << 40) |      \
 562       (((guint64) (val) &                                               \
 563         (guint64) G_GINT64_CONSTANT(0x0000000000ff0000U)) << 24) |      \
 564       (((guint64) (val) &                                               \
 565         (guint64) G_GINT64_CONSTANT(0x00000000ff000000U)) <<  8) |      \
 566       (((guint64) (val) &                                               \
 567         (guint64) G_GINT64_CONSTANT(0x000000ff00000000U)) >>  8) |      \
 568       (((guint64) (val) &                                               \
 569         (guint64) G_GINT64_CONSTANT(0x0000ff0000000000U)) >> 24) |      \
 570       (((guint64) (val) &                                               \
 571         (guint64) G_GINT64_CONSTANT(0x00ff000000000000U)) >> 40) |      \
 572       (((guint64) (val) &                                               \
 573         (guint64) G_GINT64_CONSTANT(0xff00000000000000U)) >> 56)))
 574 #  if defined (__i386__) && defined (__GNUC__) && __GNUC__ >= 2
 575 #    define GUINT64_SWAP_LE_BE_X86(val) \
 576         (__extension__                                          \
 577          ({ union { guint64 __ll;                               \
 578                     guint32 __l[2]; } __r;                      \
 579             if (__builtin_constant_p (val))                     \
 580               __r.__ll = GUINT64_SWAP_LE_BE_CONSTANT (val);     \
 581             else                                                \
 582               {                                                 \
 583                 union { guint64 __ll;                           \
 584                         guint32 __l[2]; } __w;                  \
 585                 __w.__ll = ((guint64) val);                     \
 586                 __r.__l[0] = GUINT32_SWAP_LE_BE (__w.__l[1]);   \
 587                 __r.__l[1] = GUINT32_SWAP_LE_BE (__w.__l[0]);   \
 588               }                                                 \
 589           __r.__ll; }))
 590 #    define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_X86 (val))
 591 #  else /* !__i386__ */
 592 #    define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT(val))
 593 #  endif
 594 #endif
 595
 596 #define GUINT16_SWAP_LE_PDP(val)        ((guint16) (val))
 597 #define GUINT16_SWAP_BE_PDP(val)        (GUINT16_SWAP_LE_BE (val))
 598 #define GUINT32_SWAP_LE_PDP(val)        ((guint32) ( \
 599     (((guint32) (val) & (guint32) 0x0000ffffU) << 16) | \
 600     (((guint32) (val) & (guint32) 0xffff0000U) >> 16)))
 601 #define GUINT32_SWAP_BE_PDP(val)        ((guint32) ( \
 602     (((guint32) (val) & (guint32) 0x00ff00ffU) << 8) | \
 603     (((guint32) (val) & (guint32) 0xff00ff00U) >> 8)))
 604
 605 /* The G*_TO_?E() macros are defined in glibconfig.h.
 606  * The transformation is symmetric, so the FROM just maps to the TO.
 607  */
 608 #define GINT16_FROM_LE(val)     (GINT16_TO_LE (val))
 609 #define GUINT16_FROM_LE(val)    (GUINT16_TO_LE (val))
 610 #define GINT16_FROM_BE(val)     (GINT16_TO_BE (val))
 611 #define GUINT16_FROM_BE(val)    (GUINT16_TO_BE (val))
 612 #define GINT32_FROM_LE(val)     (GINT32_TO_LE (val))
 613 #define GUINT32_FROM_LE(val)    (GUINT32_TO_LE (val))
 614 #define GINT32_FROM_BE(val)     (GINT32_TO_BE (val))
 615 #define GUINT32_FROM_BE(val)    (GUINT32_TO_BE (val))
 616
 617 #ifdef G_HAVE_GINT64
 618 #define GINT64_FROM_LE(val)     (GINT64_TO_LE (val))
 619 #define GUINT64_FROM_LE(val)    (GUINT64_TO_LE (val))
 620 #define GINT64_FROM_BE(val)     (GINT64_TO_BE (val))
 621 #define GUINT64_FROM_BE(val)    (GUINT64_TO_BE (val))
 622 #endif
 623
 624 #define GLONG_FROM_LE(val)      (GLONG_TO_LE (val))
 625 #define GULONG_FROM_LE(val)     (GULONG_TO_LE (val))
 626 #define GLONG_FROM_BE(val)      (GLONG_TO_BE (val))
 627 #define GULONG_FROM_BE(val)     (GULONG_TO_BE (val))
 628
 629 #define GINT_FROM_LE(val)       (GINT_TO_LE (val))
 630 #define GUINT_FROM_LE(val)      (GUINT_TO_LE (val))
 631 #define GINT_FROM_BE(val)       (GINT_TO_BE (val))
 632 #define GUINT_FROM_BE(val)      (GUINT_TO_BE (val))
 633
 634
 635 /* Portable versions of host-network order stuff
 636  */
 637 #define g_ntohl(val) (GUINT32_FROM_BE (val))
 638 #define g_ntohs(val) (GUINT16_FROM_BE (val))
 639 #define g_htonl(val) (GUINT32_TO_BE (val))
 640 #define g_htons(val) (GUINT16_TO_BE (val))
 641
 642
 643 /* Glib version.
 644  * we prefix variable declarations so they can
 645  * properly get exported in windows dlls.
 646  */
 647 #ifdef NATIVE_WIN32
 648 #  ifdef GLIB_COMPILATION
 649 #    define GUTILS_C_VAR __declspec(dllexport)
 650 #  else /* !GLIB_COMPILATION */
 651 #    define GUTILS_C_VAR extern __declspec(dllimport)
 652 #  endif /* !GLIB_COMPILATION */
 653 #else /* !NATIVE_WIN32 */
 654 #  define GUTILS_C_VAR extern
 655 #endif /* !NATIVE_WIN32 */
 656
 657 GUTILS_C_VAR const guint glib_major_version;
 658 GUTILS_C_VAR const guint glib_minor_version;
 659 GUTILS_C_VAR const guint glib_micro_version;
 660 GUTILS_C_VAR const guint glib_interface_age;
 661 GUTILS_C_VAR const guint glib_binary_age;
 662
 663
 664 /* Forward declarations of glib types.
 665  */
 666 typedef struct _GAllocator      GAllocator;
 667 typedef struct _GArray          GArray;
 668 typedef struct _GByteArray      GByteArray;
 669 typedef struct _GCache          GCache;
 670 typedef struct _GCompletion     GCompletion;
 671 typedef struct _GData           GData;
 672 typedef struct _GDebugKey       GDebugKey;
 673 typedef struct _GHashTable      GHashTable;
 674 typedef struct _GHook           GHook;
 675 typedef struct _GHookList       GHookList;
 676 typedef struct _GList           GList;
 677 typedef struct _GMemChunk       GMemChunk;
 678 typedef struct _GNode           GNode;
 679 typedef struct _GPtrArray       GPtrArray;
 680 typedef struct _GRelation       GRelation;
 681 typedef struct _GScanner        GScanner;
 682 typedef struct _GScannerConfig  GScannerConfig;
 683 typedef struct _GSList          GSList;
 684 typedef struct _GString         GString;
 685 typedef struct _GStringChunk    GStringChunk;
 686 typedef struct _GTimer          GTimer;
 687 typedef struct _GTree           GTree;
 688 typedef struct _GTuples         GTuples;
 689 typedef union  _GTokenValue     GTokenValue;
 690 typedef struct _GIOChannel      GIOChannel;
 691
 692 typedef enum
 693 {
 694   G_TRAVERSE_LEAFS      = 1 << 0,
 695   G_TRAVERSE_NON_LEAFS  = 1 << 1,
 696   G_TRAVERSE_ALL        = G_TRAVERSE_LEAFS | G_TRAVERSE_NON_LEAFS,
 697   G_TRAVERSE_MASK       = 0x03
 698 } GTraverseFlags;
 699
 700 typedef enum
 701 {
 702   G_IN_ORDER,
 703   G_PRE_ORDER,
 704   G_POST_ORDER,
 705   G_LEVEL_ORDER
 706 } GTraverseType;
 707
 708 /* Log level shift offset for user defined
 709  * log levels (0-7 are used by GLib).
 710  */
 711 #define G_LOG_LEVEL_USER_SHIFT  (8)
 712
 713 /* Glib log levels and flags.
 714  */
 715 typedef enum
 716 {
 717   /* log flags */
 718   G_LOG_FLAG_RECURSION          = 1 << 0,
 719   G_LOG_FLAG_FATAL              = 1 << 1,
 720
 721   /* GLib log levels */
 722   G_LOG_LEVEL_ERROR             = 1 << 2,       /* always fatal */
 723   G_LOG_LEVEL_CRITICAL          = 1 << 3,
 724   G_LOG_LEVEL_WARNING           = 1 << 4,
 725   G_LOG_LEVEL_MESSAGE           = 1 << 5,
 726   G_LOG_LEVEL_INFO              = 1 << 6,
 727   G_LOG_LEVEL_DEBUG             = 1 << 7,
 728
 729   G_LOG_LEVEL_MASK              = ~(G_LOG_FLAG_RECURSION | G_LOG_FLAG_FATAL)
 730 } GLogLevelFlags;
 731
 732 /* GLib log levels that are considered fatal by default */
 733 #define G_LOG_FATAL_MASK        (G_LOG_FLAG_RECURSION | G_LOG_LEVEL_ERROR)
 734
 735
 736 typedef gpointer        (*GCacheNewFunc)        (gpointer       key);
 737 typedef gpointer        (*GCacheDupFunc)        (gpointer       value);
 738 typedef void            (*GCacheDestroyFunc)    (gpointer       value);
 739 typedef gint            (*GCompareFunc)         (gconstpointer  a,
 740                                                  gconstpointer  b);
 741 typedef gchar*          (*GCompletionFunc)      (gpointer);
 742 typedef void            (*GDestroyNotify)       (gpointer       data);
 743 typedef void            (*GDataForeachFunc)     (GQuark         key_id,
 744                                                  gpointer       data,
 745                                                  gpointer       user_data);
 746 typedef void            (*GFunc)                (gpointer       data,
 747                                                  gpointer       user_data);
 748 typedef guint           (*GHashFunc)            (gconstpointer  key);
 749 typedef void            (*GFreeFunc)            (gpointer       data);
 750 typedef void            (*GHFunc)               (gpointer       key,
 751                                                  gpointer       value,
 752                                                  gpointer       user_data);
 753 typedef gboolean        (*GHRFunc)              (gpointer       key,
 754                                                  gpointer       value,
 755                                                  gpointer       user_data);
 756 typedef gint            (*GHookCompareFunc)     (GHook          *new_hook,
 757                                                  GHook          *sibling);
 758 typedef gboolean        (*GHookFindFunc)        (GHook          *hook,
 759                                                  gpointer        data);
 760 typedef void            (*GHookMarshaller)      (GHook          *hook,
 761                                                  gpointer        data);
 762 typedef gboolean        (*GHookCheckMarshaller) (GHook          *hook,
 763                                                  gpointer        data);
 764 typedef void            (*GHookFunc)            (gpointer        data);
 765 typedef gboolean        (*GHookCheckFunc)       (gpointer        data);
 766 typedef void            (*GHookFreeFunc)        (GHookList      *hook_list,
 767                                                  GHook          *hook);
 768 typedef void            (*GLogFunc)             (const gchar   *log_domain,
 769                                                  GLogLevelFlags log_level,
 770                                                  const gchar   *message,
 771                                                  gpointer       user_data);
 772 typedef gboolean        (*GNodeTraverseFunc)    (GNode         *node,
 773                                                  gpointer       data);
 774 typedef void            (*GNodeForeachFunc)     (GNode         *node,
 775                                                  gpointer       data);
 776 typedef gint            (*GSearchFunc)          (gpointer       key,
 777                                                  gpointer       data);
 778 typedef void            (*GScannerMsgFunc)      (GScanner      *scanner,
 779                                                  gchar         *message,
 780                                                  gint           error);
 781 typedef gint            (*GTraverseFunc)        (gpointer       key,
 782                                                  gpointer       value,
 783                                                  gpointer       data);
 784 typedef void            (*GVoidFunc)            (void);
 785
 786
 787 struct _GList
 788 {
 789   gpointer data;
 790   GList *next;
 791   GList *prev;
 792 };
 793
 794 struct _GSList
 795 {
 796   gpointer data;
 797   GSList *next;
 798 };
 799
 800 struct _GString
 801 {
 802   gchar *str;
 803   gint len;
 804 };
 805
 806 struct _GArray
 807 {
 808   gchar *data;
 809   guint len;
 810 };
 811
 812 struct _GByteArray
 813 {
 814   guint8 *data;
 815   guint   len;
 816 };
 817
 818 struct _GPtrArray
 819 {
 820   gpointer *pdata;
 821   guint     len;
 822 };
 823
 824 struct _GTuples
 825 {
 826   guint len;
 827 };
 828
 829 struct _GDebugKey
 830 {
 831   gchar *key;
 832   guint  value;
 833 };
 834
 835
 836 /* Doubly linked lists
 837  */
 838 void   g_list_push_allocator    (GAllocator     *allocator);
 839 void   g_list_pop_allocator     (void);
 840 GList* g_list_alloc             (void);
 841 void   g_list_free              (GList          *list);
 842 void   g_list_free_1            (GList          *list);
 843 GList* g_list_append            (GList          *list,
 844                                  gpointer        data);
 845 GList* g_list_prepend           (GList          *list,
 846                                  gpointer        data);
 847 GList* g_list_insert            (GList          *list,
 848                                  gpointer        data,
 849                                  gint            position);
 850 GList* g_list_insert_sorted     (GList          *list,
 851                                  gpointer        data,
 852                                  GCompareFunc    func);
 853 GList* g_list_concat            (GList          *list1,
 854                                  GList          *list2);
 855 GList* g_list_remove            (GList          *list,
 856                                  gpointer        data);
 857 GList* g_list_remove_link       (GList          *list,
 858                                  GList          *llink);
 859 GList* g_list_reverse           (GList          *list);
 860 GList* g_list_copy              (GList          *list);
 861 GList* g_list_nth               (GList          *list,
 862                                  guint           n);
 863 GList* g_list_find              (GList          *list,
 864                                  gpointer        data);
 865 GList* g_list_find_custom       (GList          *list,
 866                                  gpointer        data,
 867                                  GCompareFunc    func);
 868 gint   g_list_position          (GList          *list,
 869                                  GList          *llink);
 870 gint   g_list_index             (GList          *list,
 871                                  gpointer        data);
 872 GList* g_list_last              (GList          *list);
 873 GList* g_list_first             (GList          *list);
 874 guint  g_list_length            (GList          *list);
 875 void   g_list_foreach           (GList          *list,
 876                                  GFunc           func,
 877                                  gpointer        user_data);
 878 GList* g_list_sort              (GList          *list,
 879                                  GCompareFunc    compare_func);
 880 gpointer g_list_nth_data        (GList          *list,
 881                                  guint           n);
 882 #define g_list_previous(list)   ((list) ? (((GList *)(list))->prev) : NULL)
 883 #define g_list_next(list)       ((list) ? (((GList *)(list))->next) : NULL)
 884
 885
 886 /* Singly linked lists
 887  */
 888 void    g_slist_push_allocator  (GAllocator     *allocator);
 889 void    g_slist_pop_allocator   (void);
 890 GSList* g_slist_alloc           (void);
 891 void    g_slist_free            (GSList         *list);
 892 void    g_slist_free_1          (GSList         *list);
 893 GSList* g_slist_append          (GSList         *list,
 894                                  gpointer        data);
 895 GSList* g_slist_prepend         (GSList         *list,
 896                                  gpointer        data);
 897 GSList* g_slist_insert          (GSList         *list,
 898                                  gpointer        data,
 899                                  gint            position);
 900 GSList* g_slist_insert_sorted   (GSList         *list,
 901                                  gpointer        data,
 902                                  GCompareFunc    func);
 903 GSList* g_slist_concat          (GSList         *list1,
 904                                  GSList         *list2);
 905 GSList* g_slist_remove          (GSList         *list,
 906                                  gpointer        data);
 907 GSList* g_slist_remove_link     (GSList         *list,
 908                                  GSList         *llink);
 909 GSList* g_slist_reverse         (GSList         *list);
 910 GSList* g_slist_copy            (GSList         *list);
 911 GSList* g_slist_nth             (GSList         *list,
 912                                  guint           n);
 913 GSList* g_slist_find            (GSList         *list,
 914                                  gpointer        data);
 915 GSList* g_slist_find_custom     (GSList         *list,
 916                                  gpointer        data,
 917                                  GCompareFunc    func);
 918 gint    g_slist_position        (GSList         *list,
 919                                  GSList         *llink);
 920 gint    g_slist_index           (GSList         *list,
 921                                  gpointer        data);
 922 GSList* g_slist_last            (GSList         *list);
 923 guint   g_slist_length          (GSList         *list);
 924 void    g_slist_foreach         (GSList         *list,
 925                                  GFunc           func,
 926                                  gpointer        user_data);
 927 GSList*  g_slist_sort           (GSList          *list,
 928                                  GCompareFunc    compare_func);
 929 gpointer g_slist_nth_data       (GSList         *list,
 930                                  guint           n);
 931 #define g_slist_next(slist)     ((slist) ? (((GSList *)(slist))->next) : NULL)
 932
 933
 934 /* Hash tables
 935  */
 936 GHashTable* g_hash_table_new            (GHashFunc       hash_func,
 937                                          GCompareFunc    key_compare_func);
 938 void        g_hash_table_destroy        (GHashTable     *hash_table);
 939 void        g_hash_table_insert         (GHashTable     *hash_table,
 940                                          gpointer        key,
 941                                          gpointer        value);
 942 void        g_hash_table_remove         (GHashTable     *hash_table,
 943                                          gconstpointer   key);
 944 gpointer    g_hash_table_lookup         (GHashTable     *hash_table,
 945                                          gconstpointer   key);
 946 gboolean    g_hash_table_lookup_extended(GHashTable     *hash_table,
 947                                          gconstpointer   lookup_key,
 948                                          gpointer       *orig_key,
 949                                          gpointer       *value);
 950 void        g_hash_table_freeze         (GHashTable     *hash_table);
 951 void        g_hash_table_thaw           (GHashTable     *hash_table);
 952 void        g_hash_table_foreach        (GHashTable     *hash_table,
 953                                          GHFunc          func,
 954                                          gpointer        user_data);
 955 gint        g_hash_table_foreach_remove (GHashTable     *hash_table,
 956                                          GHRFunc         func,
 957                                          gpointer        user_data);
 958 gint        g_hash_table_size           (GHashTable     *hash_table);
 959
 960
 961 /* Caches
 962  */
 963 GCache*  g_cache_new           (GCacheNewFunc      value_new_func,
 964                                 GCacheDestroyFunc  value_destroy_func,
 965                                 GCacheDupFunc      key_dup_func,
 966                                 GCacheDestroyFunc  key_destroy_func,
 967                                 GHashFunc          hash_key_func,
 968                                 GHashFunc          hash_value_func,
 969                                 GCompareFunc       key_compare_func);
 970 void     g_cache_destroy       (GCache            *cache);
 971 gpointer g_cache_insert        (GCache            *cache,
 972                                 gpointer           key);
 973 void     g_cache_remove        (GCache            *cache,
 974                                 gpointer           value);
 975 void     g_cache_key_foreach   (GCache            *cache,
 976                                 GHFunc             func,
 977                                 gpointer           user_data);
 978 void     g_cache_value_foreach (GCache            *cache,
 979                                 GHFunc             func,
 980                                 gpointer           user_data);
 981
 982
 983 /* Balanced binary trees
 984  */
 985 GTree*   g_tree_new      (GCompareFunc   key_compare_func);
 986 void     g_tree_destroy  (GTree         *tree);
 987 void     g_tree_insert   (GTree         *tree,
 988                           gpointer       key,
 989                           gpointer       value);
 990 void     g_tree_remove   (GTree         *tree,
 991                           gpointer       key);
 992 gpointer g_tree_lookup   (GTree         *tree,
 993                           gpointer       key);
 994 void     g_tree_traverse (GTree         *tree,
 995                           GTraverseFunc  traverse_func,
 996                           GTraverseType  traverse_type,
 997                           gpointer       data);
 998 gpointer g_tree_search   (GTree         *tree,
 999                           GSearchFunc    search_func,
1000                           gpointer       data);
1001 gint     g_tree_height   (GTree         *tree);
1002 gint     g_tree_nnodes   (GTree         *tree);
1003
1004
1005
1006 /* N-way tree implementation
1007  */
1008 struct _GNode
1009 {
1010   gpointer data;
1011   GNode   *next;
1012   GNode   *prev;
1013   GNode   *parent;
1014   GNode   *children;
1015 };
1016
1017 #define  G_NODE_IS_ROOT(node)   (((GNode*) (node))->parent == NULL && \
1018                                  ((GNode*) (node))->prev == NULL && \
1019                                  ((GNode*) (node))->next == NULL)
1020 #define  G_NODE_IS_LEAF(node)   (((GNode*) (node))->children == NULL)
1021
1022 void     g_node_push_allocator  (GAllocator       *allocator);
1023 void     g_node_pop_allocator   (void);
1024 GNode*   g_node_new             (gpointer          data);
1025 void     g_node_destroy         (GNode            *root);
1026 void     g_node_unlink          (GNode            *node);
1027 GNode*   g_node_insert          (GNode            *parent,
1028                                  gint              position,
1029                                  GNode            *node);
1030 GNode*   g_node_insert_before   (GNode            *parent,
1031                                  GNode            *sibling,
1032                                  GNode            *node);
1033 GNode*   g_node_prepend         (GNode            *parent,
1034                                  GNode            *node);
1035 guint    g_node_n_nodes         (GNode            *root,
1036                                  GTraverseFlags    flags);
1037 GNode*   g_node_get_root        (GNode            *node);
1038 gboolean g_node_is_ancestor     (GNode            *node,
1039                                  GNode            *descendant);
1040 guint    g_node_depth           (GNode            *node);
1041 GNode*   g_node_find            (GNode            *root,
1042                                  GTraverseType     order,
1043                                  GTraverseFlags    flags,
1044                                  gpointer          data);
1045
1046 /* convenience macros */
1047 #define g_node_append(parent, node)                             \
1048      g_node_insert_before ((parent), NULL, (node))
1049 #define g_node_insert_data(parent, position, data)              \
1050      g_node_insert ((parent), (position), g_node_new (data))
1051 #define g_node_insert_data_before(parent, sibling, data)        \
1052      g_node_insert_before ((parent), (sibling), g_node_new (data))
1053 #define g_node_prepend_data(parent, data)                       \
1054      g_node_prepend ((parent), g_node_new (data))
1055 #define g_node_append_data(parent, data)                        \
1056      g_node_insert_before ((parent), NULL, g_node_new (data))
1057
1058 /* traversal function, assumes that `node' is root
1059  * (only traverses `node' and its subtree).
1060  * this function is just a high level interface to
1061  * low level traversal functions, optimized for speed.
1062  */
1063 void     g_node_traverse        (GNode            *root,
1064                                  GTraverseType     order,
1065                                  GTraverseFlags    flags,
1066                                  gint              max_depth,
1067                                  GNodeTraverseFunc func,
1068                                  gpointer          data);
1069
1070 /* return the maximum tree height starting with `node', this is an expensive
1071  * operation, since we need to visit all nodes. this could be shortened by
1072  * adding `guint height' to struct _GNode, but then again, this is not very
1073  * often needed, and would make g_node_insert() more time consuming.
1074  */
1075 guint    g_node_max_height       (GNode *root);
1076
1077 void     g_node_children_foreach (GNode           *node,
1078                                   GTraverseFlags   flags,
1079                                   GNodeForeachFunc func,
1080                                   gpointer         data);
1081 void     g_node_reverse_children (GNode           *node);
1082 guint    g_node_n_children       (GNode           *node);
1083 GNode*   g_node_nth_child        (GNode           *node,
1084                                   guint            n);
1085 GNode*   g_node_last_child       (GNode           *node);
1086 GNode*   g_node_find_child       (GNode           *node,
1087                                   GTraverseFlags   flags,
1088                                   gpointer         data);
1089 gint     g_node_child_position   (GNode           *node,
1090                                   GNode           *child);
1091 gint     g_node_child_index      (GNode           *node,
1092                                   gpointer         data);
1093
1094 GNode*   g_node_first_sibling    (GNode           *node);
1095 GNode*   g_node_last_sibling     (GNode           *node);
1096
1097 #define  g_node_prev_sibling(node)      ((node) ? \
1098                                          ((GNode*) (node))->prev : NULL)
1099 #define  g_node_next_sibling(node)      ((node) ? \
1100                                          ((GNode*) (node))->next : NULL)
1101 #define  g_node_first_child(node)       ((node) ? \
1102                                          ((GNode*) (node))->children : NULL)
1103
1104
1105 /* Callback maintenance functions
1106  */
1107 #define G_HOOK_FLAG_USER_SHIFT  (4)
1108 typedef enum
1109 {
1110   G_HOOK_FLAG_ACTIVE    = 1 << 0,
1111   G_HOOK_FLAG_IN_CALL   = 1 << 1,
1112   G_HOOK_FLAG_MASK      = 0x0f
1113 } GHookFlagMask;
1114
1115 struct _GHookList
1116 {
1117   guint          seq_id;
1118   guint          hook_size;
1119   guint          is_setup : 1;
1120   GHook         *hooks;
1121   GMemChunk     *hook_memchunk;
1122   GHookFreeFunc  hook_free; /* virtual function */
1123 };
1124
1125 struct _GHook
1126 {
1127   gpointer       data;
1128   GHook         *next;
1129   GHook         *prev;
1130   guint          ref_count;
1131   guint          hook_id;
1132   guint          flags;
1133   gpointer       func;
1134   GDestroyNotify destroy;
1135 };
1136
1137 #define G_HOOK_ACTIVE(hook)             ((((GHook*) hook)->flags & \
1138                                           G_HOOK_FLAG_ACTIVE) != 0)
1139 #define G_HOOK_IN_CALL(hook)            ((((GHook*) hook)->flags & \
1140                                           G_HOOK_FLAG_IN_CALL) != 0)
1141 #define G_HOOK_IS_VALID(hook)           (((GHook*) hook)->hook_id != 0 && \
1142                                          G_HOOK_ACTIVE (hook))
1143 #define G_HOOK_IS_UNLINKED(hook)        (((GHook*) hook)->next == NULL && \
1144                                          ((GHook*) hook)->prev == NULL && \
1145                                          ((GHook*) hook)->hook_id == 0 && \
1146                                          ((GHook*) hook)->ref_count == 0)
1147
1148 void     g_hook_list_init               (GHookList              *hook_list,
1149                                          guint                   hook_size);
1150 void     g_hook_list_clear              (GHookList              *hook_list);
1151 GHook*   g_hook_alloc                   (GHookList              *hook_list);
1152 void     g_hook_free                    (GHookList              *hook_list,
1153                                          GHook                  *hook);
1154 void     g_hook_ref                     (GHookList              *hook_list,
1155                                          GHook                  *hook);
1156 void     g_hook_unref                   (GHookList              *hook_list,
1157                                          GHook                  *hook);
1158 gboolean g_hook_destroy                 (GHookList              *hook_list,
1159                                          guint                   hook_id);
1160 void     g_hook_destroy_link            (GHookList              *hook_list,
1161                                          GHook                  *hook);
1162 void     g_hook_prepend                 (GHookList              *hook_list,
1163                                          GHook                  *hook);
1164 void     g_hook_insert_before           (GHookList              *hook_list,
1165                                          GHook                  *sibling,
1166                                          GHook                  *hook);
1167 void     g_hook_insert_sorted           (GHookList              *hook_list,
1168                                          GHook                  *hook,
1169                                          GHookCompareFunc        func);
1170 GHook*   g_hook_get                     (GHookList              *hook_list,
1171                                          guint                   hook_id);
1172 GHook*   g_hook_find                    (GHookList              *hook_list,
1173                                          gboolean                need_valids,
1174                                          GHookFindFunc           func,
1175                                          gpointer                data);
1176 GHook*   g_hook_find_data               (GHookList              *hook_list,
1177                                          gboolean                need_valids,
1178                                          gpointer                data);
1179 GHook*   g_hook_find_func               (GHookList              *hook_list,
1180                                          gboolean                need_valids,
1181                                          gpointer                func);
1182 GHook*   g_hook_find_func_data          (GHookList              *hook_list,
1183                                          gboolean                need_valids,
1184                                          gpointer                func,
1185                                          gpointer                data);
1186 /* return the first valid hook, and increment its reference count */
1187 GHook*   g_hook_first_valid             (GHookList              *hook_list,
1188                                          gboolean                may_be_in_call);
1189 /* return the next valid hook with incremented reference count, and
1190  * decrement the reference count of the original hook
1191  */
1192 GHook*   g_hook_next_valid              (GHookList              *hook_list,
1193                                          GHook                  *hook,
1194                                          gboolean                may_be_in_call);
1195
1196 /* GHookCompareFunc implementation to insert hooks sorted by their id */
1197 gint     g_hook_compare_ids             (GHook                  *new_hook,
1198                                          GHook                  *sibling);
1199
1200 /* convenience macros */
1201 #define  g_hook_append( hook_list, hook )  \
1202      g_hook_insert_before ((hook_list), NULL, (hook))
1203
1204 /* invoke all valid hooks with the (*GHookFunc) signature.
1205  */
1206 void     g_hook_list_invoke             (GHookList              *hook_list,
1207                                          gboolean                may_recurse);
1208 /* invoke all valid hooks with the (*GHookCheckFunc) signature,
1209  * and destroy the hook if FALSE is returned.
1210  */
1211 void     g_hook_list_invoke_check       (GHookList              *hook_list,
1212                                          gboolean                may_recurse);
1213 /* invoke a marshaller on all valid hooks.
1214  */
1215 void     g_hook_list_marshal            (GHookList              *hook_list,
1216                                          gboolean                may_recurse,
1217                                          GHookMarshaller         marshaller,
1218                                          gpointer                data);
1219 void     g_hook_list_marshal_check      (GHookList              *hook_list,
1220                                          gboolean                may_recurse,
1221                                          GHookCheckMarshaller    marshaller,
1222                                          gpointer                data);
1223
1224
1225 /* Fatal error handlers.
1226  * g_on_error_query() will prompt the user to either
1227  * [E]xit, [H]alt, [P]roceed or show [S]tack trace.
1228  * g_on_error_stack_trace() invokes gdb, which attaches to the current
1229  * process and shows a stack trace.
1230  * These function may cause different actions on non-unix platforms.
1231  * The prg_name arg is required by gdb to find the executable, if it is
1232  * passed as NULL, g_on_error_query() will try g_get_prgname().
1233  */
1234 void g_on_error_query (const gchar *prg_name);
1235 void g_on_error_stack_trace (const gchar *prg_name);
1236
1237
1238 /* Logging mechanism
1239  */
1240 extern          const gchar             *g_log_domain_glib;
1241 guint           g_log_set_handler       (const gchar    *log_domain,
1242                                          GLogLevelFlags  log_levels,
1243                                          GLogFunc        log_func,
1244                                          gpointer        user_data);
1245 void            g_log_remove_handler    (const gchar    *log_domain,
1246                                          guint           handler_id);
1247 void            g_log_default_handler   (const gchar    *log_domain,
1248                                          GLogLevelFlags  log_level,
1249                                          const gchar    *message,
1250                                          gpointer        unused_data);
1251 void            g_log                   (const gchar    *log_domain,
1252                                          GLogLevelFlags  log_level,
1253                                          const gchar    *format,
1254                                          ...) G_GNUC_PRINTF (3, 4);
1255 void            g_logv                  (const gchar    *log_domain,
1256                                          GLogLevelFlags  log_level,
1257                                          const gchar    *format,
1258                                          va_list         args);
1259 GLogLevelFlags  g_log_set_fatal_mask    (const gchar    *log_domain,
1260                                          GLogLevelFlags  fatal_mask);
1261 GLogLevelFlags  g_log_set_always_fatal  (GLogLevelFlags  fatal_mask);
1262 #ifndef G_LOG_DOMAIN
1263 #define G_LOG_DOMAIN    (NULL)
1264 #endif  /* G_LOG_DOMAIN */
1265 #ifdef  __GNUC__
1266 #define g_error(format, args...)        g_log (G_LOG_DOMAIN, \
1267                                                G_LOG_LEVEL_ERROR, \
1268                                                format, ##args)
1269 #define g_message(format, args...)      g_log (G_LOG_DOMAIN, \
1270                                                G_LOG_LEVEL_MESSAGE, \
1271                                                format, ##args)
1272 #define g_warning(format, args...)      g_log (G_LOG_DOMAIN, \
1273                                                G_LOG_LEVEL_WARNING, \
1274                                                format, ##args)
1275 #else   /* !__GNUC__ */
1276 static void
1277 g_error (const gchar *format,
1278          ...)
1279 {
1280   va_list args;
1281   va_start (args, format);
1282   g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR, format, args);
1283   va_end (args);
1284 }
1285 static void
1286 g_message (const gchar *format,
1287            ...)
1288 {
1289   va_list args;
1290   va_start (args, format);
1291   g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, format, args);
1292   va_end (args);
1293 }
1294 static void
1295 g_warning (const gchar *format,
1296            ...)
1297 {
1298   va_list args;
1299   va_start (args, format);
1300   g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_WARNING, format, args);
1301   va_end (args);
1302 }
1303 #endif  /* !__GNUC__ */
1304
1305 typedef void    (*GPrintFunc)           (const gchar    *string);
1306 void            g_print                 (const gchar    *format,
1307                                          ...) G_GNUC_PRINTF (1, 2);
1308 GPrintFunc      g_set_print_handler     (GPrintFunc      func);
1309 void            g_printerr              (const gchar    *format,
1310                                          ...) G_GNUC_PRINTF (1, 2);
1311 GPrintFunc      g_set_printerr_handler  (GPrintFunc      func);
1312
1313 /* deprecated compatibility functions, use g_log_set_handler() instead */
1314 typedef void            (*GErrorFunc)           (const gchar *str);
1315 typedef void            (*GWarningFunc)         (const gchar *str);
1316 GErrorFunc   g_set_error_handler   (GErrorFunc   func);
1317 GWarningFunc g_set_warning_handler (GWarningFunc func);
1318 GPrintFunc   g_set_message_handler (GPrintFunc func);
1319
1320
1321 /* Memory allocation and debugging
1322  */
1323 #ifdef USE_DMALLOC
1324
1325 #define g_malloc(size)       ((gpointer) MALLOC (size))
1326 #define g_malloc0(size)      ((gpointer) CALLOC (char, size))
1327 #define g_realloc(mem,size)  ((gpointer) REALLOC (mem, char, size))
1328 #define g_free(mem)          FREE (mem)
1329
1330 #else /* !USE_DMALLOC */
1331
1332 gpointer g_malloc      (gulong    size);
1333 gpointer g_malloc0     (gulong    size);
1334 gpointer g_realloc     (gpointer  mem,
1335                         gulong    size);
1336 void     g_free        (gpointer  mem);
1337
1338 #endif /* !USE_DMALLOC */
1339
1340 void     g_mem_profile (void);
1341 void     g_mem_check   (gpointer  mem);
1342
1343 /* Generic allocators
1344  */
1345 GAllocator* g_allocator_new   (const gchar  *name,
1346                                guint         n_preallocs);
1347 void        g_allocator_free  (GAllocator   *allocator);
1348
1349 #define G_ALLOCATOR_LIST        (1)
1350 #define G_ALLOCATOR_SLIST       (2)
1351 #define G_ALLOCATOR_NODE        (3)
1352
1353
1354 /* "g_mem_chunk_new" creates a new memory chunk.
1355  * Memory chunks are used to allocate pieces of memory which are
1356  *  always the same size. Lists are a good example of such a data type.
1357  * The memory chunk allocates and frees blocks of memory as needed.
1358  *  Just be sure to call "g_mem_chunk_free" and not "g_free" on data
1359  *  allocated in a mem chunk. ("g_free" will most likely cause a seg
1360  *  fault...somewhere).
1361  *
1362  * Oh yeah, GMemChunk is an opaque data type. (You don't really
1363  *  want to know what's going on inside do you?)
1364  */
1365
1366 /* ALLOC_ONLY MemChunk's can only allocate memory. The free operation
1367  *  is interpreted as a no op. ALLOC_ONLY MemChunk's save 4 bytes per
1368  *  atom. (They are also useful for lists which use MemChunk to allocate
1369  *  memory but are also part of the MemChunk implementation).
1370  * ALLOC_AND_FREE MemChunk's can allocate and free memory.
1371  */
1372
1373 #define G_ALLOC_ONLY      1
1374 #define G_ALLOC_AND_FREE  2
1375
1376 GMemChunk* g_mem_chunk_new     (gchar     *name,
1377                                 gint       atom_size,
1378                                 gulong     area_size,
1379                                 gint       type);
1380 void       g_mem_chunk_destroy (GMemChunk *mem_chunk);
1381 gpointer   g_mem_chunk_alloc   (GMemChunk *mem_chunk);
1382 gpointer   g_mem_chunk_alloc0  (GMemChunk *mem_chunk);
1383 void       g_mem_chunk_free    (GMemChunk *mem_chunk,
1384                                 gpointer   mem);
1385 void       g_mem_chunk_clean   (GMemChunk *mem_chunk);
1386 void       g_mem_chunk_reset   (GMemChunk *mem_chunk);
1387 void       g_mem_chunk_print   (GMemChunk *mem_chunk);
1388 void       g_mem_chunk_info    (void);
1389
1390 /* Ah yes...we have a "g_blow_chunks" function.
1391  * "g_blow_chunks" simply compresses all the chunks. This operation
1392  *  consists of freeing every memory area that should be freed (but
1393  *  which we haven't gotten around to doing yet). And, no,
1394  *  "g_blow_chunks" doesn't follow the naming scheme, but it is a
1395  *  much better name than "g_mem_chunk_clean_all" or something
1396  *  similar.
1397  */
1398 void g_blow_chunks (void);
1399
1400
1401 /* Timer
1402  */
1403 GTimer* g_timer_new     (void);
1404 void    g_timer_destroy (GTimer  *timer);
1405 void    g_timer_start   (GTimer  *timer);
1406 void    g_timer_stop    (GTimer  *timer);
1407 void    g_timer_reset   (GTimer  *timer);
1408 gdouble g_timer_elapsed (GTimer  *timer,
1409                          gulong  *microseconds);
1410
1411
1412 /* String utility functions that modify a string argument or
1413  * return a constant string that must not be freed.
1414  */
1415 #define  G_STR_DELIMITERS       "_-|> <."
1416 gchar*   g_strdelimit           (gchar       *string,
1417                                  const gchar *delimiters,
1418                                  gchar        new_delimiter);
1419 gdouble  g_strtod               (const gchar *nptr,
1420                                  gchar      **endptr);
1421 gchar*   g_strerror             (gint         errnum);
1422 gchar*   g_strsignal            (gint         signum);
1423 gint     g_strcasecmp           (const gchar *s1,
1424                                  const gchar *s2);
1425 gint     g_strncasecmp          (const gchar *s1,
1426                                  const gchar *s2,
1427                                  guint        n);
1428 void     g_strdown              (gchar       *string);
1429 void     g_strup                (gchar       *string);
1430 void     g_strreverse           (gchar       *string);
1431 /* removes leading spaces */
1432 gchar*   g_strchug              (gchar        *string);
1433 /* removes trailing spaces */
1434 gchar*  g_strchomp              (gchar        *string);
1435 /* removes leading & trailing spaces */
1436 #define g_strstrip( string )    g_strchomp (g_strchug (string))
1437
1438 /* String utility functions that return a newly allocated string which
1439  * ought to be freed from the caller at some point.
1440  */
1441 gchar*   g_strdup               (const gchar *str);
1442 gchar*   g_strdup_printf        (const gchar *format,
1443                                  ...) G_GNUC_PRINTF (1, 2);
1444 gchar*   g_strdup_vprintf       (const gchar *format,
1445                                  va_list      args);
1446 gchar*   g_strndup              (const gchar *str,
1447                                  guint        n);
1448 gchar*   g_strnfill             (guint        length,
1449                                  gchar        fill_char);
1450 gchar*   g_strconcat            (const gchar *string1,
1451                                  ...); /* NULL terminated */
1452 gchar*   g_strjoin              (const gchar  *separator,
1453                                  ...); /* NULL terminated */
1454 gchar*   g_strescape            (gchar        *string);
1455 gpointer g_memdup               (gconstpointer mem,
1456                                  guint         byte_size);
1457
1458 /* NULL terminated string arrays.
1459  * g_strsplit() splits up string into max_tokens tokens at delim and
1460  * returns a newly allocated string array.
1461  * g_strjoinv() concatenates all of str_array's strings, sliding in an
1462  * optional separator, the returned string is newly allocated.
1463  * g_strfreev() frees the array itself and all of its strings.
1464  */
1465 gchar**  g_strsplit             (const gchar  *string,
1466                                  const gchar  *delimiter,
1467                                  gint          max_tokens);
1468 gchar*   g_strjoinv             (const gchar  *separator,
1469                                  gchar       **str_array);
1470 void     g_strfreev             (gchar       **str_array);
1471
1472
1473
1474 /* calculate a string size, guarranteed to fit format + args.
1475  */
1476 guint   g_printf_string_upper_bound (const gchar* format,
1477                                      va_list      args);
1478
1479
1480 /* Retrive static string info
1481  */
1482 gchar*  g_get_user_name         (void);
1483 gchar*  g_get_real_name         (void);
1484 gchar*  g_get_home_dir          (void);
1485 gchar*  g_get_tmp_dir           (void);
1486 gchar*  g_get_prgname           (void);
1487 void    g_set_prgname           (const gchar *prgname);
1488
1489
1490 /* Miscellaneous utility functions
1491  */
1492 guint   g_parse_debug_string    (const gchar *string,
1493                                  GDebugKey   *keys,
1494                                  guint        nkeys);
1495 gint    g_snprintf              (gchar       *string,
1496                                  gulong       n,
1497                                  gchar const *format,
1498                                  ...) G_GNUC_PRINTF (3, 4);
1499 gint    g_vsnprintf             (gchar       *string,
1500                                  gulong       n,
1501                                  gchar const *format,
1502                                  va_list      args);
1503 gchar*  g_basename              (const gchar *file_name);
1504 /* Check if a file name is an absolute path */
1505 gboolean g_path_is_absolute     (const gchar *file_name);
1506 /* In case of absolute paths, skip the root part */
1507 gchar*  g_path_skip_root        (gchar       *file_name);
1508
1509 /* strings are newly allocated with g_malloc() */
1510 gchar*  g_dirname               (const gchar *file_name);
1511 gchar*  g_get_current_dir       (void);
1512 gchar*  g_getenv                (const gchar *variable);
1513
1514
1515 /* we use a GLib function as a replacement for ATEXIT, so
1516  * the programmer is not required to check the return value
1517  * (if there is any in the implementation) and doesn't encounter
1518  * missing include files.
1519  */
1520 void    g_atexit                (GVoidFunc    func);
1521
1522
1523 /* Bit tests
1524  */
1525 G_INLINE_FUNC gint      g_bit_nth_lsf (guint32 mask,
1526                                        gint    nth_bit);
1527 #ifdef  G_CAN_INLINE
1528 G_INLINE_FUNC gint
1529 g_bit_nth_lsf (guint32 mask,
1530                gint    nth_bit)
1531 {
1532   do
1533     {
1534       nth_bit++;
1535       if (mask & (1 << (guint) nth_bit))
1536         return nth_bit;
1537     }
1538   while (nth_bit < 32);
1539   return -1;
1540 }
1541 #endif  /* G_CAN_INLINE */
1542
1543 G_INLINE_FUNC gint      g_bit_nth_msf (guint32 mask,
1544                                        gint    nth_bit);
1545 #ifdef G_CAN_INLINE
1546 G_INLINE_FUNC gint
1547 g_bit_nth_msf (guint32 mask,
1548                gint    nth_bit)
1549 {
1550   if (nth_bit < 0)
1551     nth_bit = 32;
1552   do
1553     {
1554       nth_bit--;
1555       if (mask & (1 << (guint) nth_bit))
1556         return nth_bit;
1557     }
1558   while (nth_bit > 0);
1559   return -1;
1560 }
1561 #endif  /* G_CAN_INLINE */
1562
1563 G_INLINE_FUNC guint     g_bit_storage (guint number);
1564 #ifdef G_CAN_INLINE
1565 G_INLINE_FUNC guint
1566 g_bit_storage (guint number)
1567 {
1568   register guint n_bits = 0;
1569
1570   do
1571     {
1572       n_bits++;
1573       number >>= 1;
1574     }
1575   while (number);
1576   return n_bits;
1577 }
1578 #endif  /* G_CAN_INLINE */
1579
1580 /* String Chunks
1581  */
1582 GStringChunk* g_string_chunk_new           (gint size);
1583 void          g_string_chunk_free          (GStringChunk *chunk);
1584 gchar*        g_string_chunk_insert        (GStringChunk *chunk,
1585                                             const gchar  *string);
1586 gchar*        g_string_chunk_insert_const  (GStringChunk *chunk,
1587                                             const gchar  *string);
1588
1589
1590 /* Strings
1591  */
1592 GString* g_string_new       (const gchar *init);
1593 GString* g_string_sized_new (guint        dfl_size);
1594 void     g_string_free      (GString     *string,
1595                              gint         free_segment);
1596 GString* g_string_assign    (GString     *lval,
1597                              const gchar *rval);
1598 GString* g_string_truncate  (GString     *string,
1599                              gint         len);
1600 GString* g_string_append    (GString     *string,
1601                              const gchar *val);
1602 GString* g_string_append_c  (GString     *string,
1603                              gchar        c);
1604 GString* g_string_prepend   (GString     *string,
1605                              const gchar *val);
1606 GString* g_string_prepend_c (GString     *string,
1607                              gchar        c);
1608 GString* g_string_insert    (GString     *string,
1609                              gint         pos,
1610                              const gchar *val);
1611 GString* g_string_insert_c  (GString     *string,
1612                              gint         pos,
1613                              gchar        c);
1614 GString* g_string_erase     (GString     *string,
1615                              gint         pos,
1616                              gint         len);
1617 GString* g_string_down      (GString     *string);
1618 GString* g_string_up        (GString     *string);
1619 void     g_string_sprintf   (GString     *string,
1620                              const gchar *format,
1621                              ...) G_GNUC_PRINTF (2, 3);
1622 void     g_string_sprintfa  (GString     *string,
1623                              const gchar *format,
1624                              ...) G_GNUC_PRINTF (2, 3);
1625
1626
1627 /* Resizable arrays, remove fills any cleared spot and shortens the
1628  * array, while preserving the order. remove_fast will distort the
1629  * order by moving the last element to the position of the removed
1630  */
1631
1632 #define g_array_append_val(a,v) g_array_append_vals(a,&v,1)
1633 #define g_array_prepend_val(a,v) g_array_prepend_vals(a,&v,1)
1634 #define g_array_insert_val(a,i,v) g_array_insert_vals(a,i,&v,1)
1635 #define g_array_index(a,t,i) (((t*)a->data)[i])
1636
1637 GArray* g_array_new               (gboolean         zero_terminated,
1638                                    gboolean         clear,
1639                                    guint            element_size);
1640 void    g_array_free              (GArray          *array,
1641                                    gboolean         free_segment);
1642 GArray* g_array_append_vals       (GArray          *array,
1643                                    gconstpointer    data,
1644                                    guint            len);
1645 GArray* g_array_prepend_vals      (GArray          *array,
1646                                    gconstpointer    data,
1647                                    guint            len);
1648 GArray* g_array_insert_vals       (GArray          *array,
1649                                    guint            index,
1650                                    gconstpointer    data,
1651                                    guint            len);
1652 GArray* g_array_set_size          (GArray          *array,
1653                                    guint            length);
1654 GArray* g_array_remove_index      (GArray          *array,
1655                                    guint            index);
1656 GArray* g_array_remove_index_fast (GArray          *array,
1657                                    guint            index);
1658
1659 /* Resizable pointer array.  This interface is much less complicated
1660  * than the above.  Add appends appends a pointer.  Remove fills any
1661  * cleared spot and shortens the array. remove_fast will again distort
1662  * order.
1663  */
1664 #define     g_ptr_array_index(array,index) (array->pdata)[index]
1665 GPtrArray*  g_ptr_array_new                (void);
1666 void        g_ptr_array_free               (GPtrArray   *array,
1667                                             gboolean     free_seg);
1668 void        g_ptr_array_set_size           (GPtrArray   *array,
1669                                             gint         length);
1670 gpointer    g_ptr_array_remove_index       (GPtrArray   *array,
1671                                             guint        index);
1672 gpointer    g_ptr_array_remove_index_fast  (GPtrArray   *array,
1673                                             guint        index);
1674 gboolean    g_ptr_array_remove             (GPtrArray   *array,
1675                                             gpointer     data);
1676 gboolean    g_ptr_array_remove_fast        (GPtrArray   *array,
1677                                             gpointer     data);
1678 void        g_ptr_array_add                (GPtrArray   *array,
1679                                             gpointer     data);
1680
1681 /* Byte arrays, an array of guint8.  Implemented as a GArray,
1682  * but type-safe.
1683  */
1684
1685 GByteArray* g_byte_array_new               (void);
1686 void        g_byte_array_free              (GByteArray   *array,
1687                                             gboolean      free_segment);
1688 GByteArray* g_byte_array_append            (GByteArray   *array,
1689                                             const guint8 *data,
1690                                             guint         len);
1691 GByteArray* g_byte_array_prepend           (GByteArray   *array,
1692                                             const guint8 *data,
1693                                             guint         len);
1694 GByteArray* g_byte_array_set_size          (GByteArray   *array,
1695                                             guint         length);
1696 GByteArray* g_byte_array_remove_index      (GByteArray   *array,
1697                                             guint         index);
1698 GByteArray* g_byte_array_remove_index_fast (GByteArray   *array,
1699                                             guint         index);
1700
1701
1702 /* Hash Functions
1703  */
1704 gint  g_str_equal (gconstpointer   v,
1705                    gconstpointer   v2);
1706 guint g_str_hash  (gconstpointer   v);
1707
1708 gint  g_int_equal (gconstpointer   v,
1709                    gconstpointer   v2);
1710 guint g_int_hash  (gconstpointer   v);
1711
1712 /* This "hash" function will just return the key's adress as an
1713  * unsigned integer. Useful for hashing on plain adresses or
1714  * simple integer values.
1715  */
1716 guint g_direct_hash  (gconstpointer v);
1717 gint  g_direct_equal (gconstpointer v,
1718                       gconstpointer v2);
1719
1720
1721 /* Quarks (string<->id association)
1722  */
1723 GQuark    g_quark_try_string            (const gchar    *string);
1724 GQuark    g_quark_from_static_string    (const gchar    *string);
1725 GQuark    g_quark_from_string           (const gchar    *string);
1726 gchar*    g_quark_to_string             (GQuark          quark);
1727
1728
1729 /* Keyed Data List
1730  */
1731 void      g_datalist_init                (GData          **datalist);
1732 void      g_datalist_clear               (GData          **datalist);
1733 gpointer  g_datalist_id_get_data         (GData          **datalist,
1734                                           GQuark           key_id);
1735 void      g_datalist_id_set_data_full    (GData          **datalist,
1736                                           GQuark           key_id,
1737                                           gpointer         data,
1738                                           GDestroyNotify   destroy_func);
1739 void      g_datalist_id_remove_no_notify (GData          **datalist,
1740                                           GQuark           key_id);
1741 void      g_datalist_foreach             (GData          **datalist,
1742                                           GDataForeachFunc func,
1743                                           gpointer         user_data);
1744 #define   g_datalist_id_set_data(dl, q, d)      \
1745      g_datalist_id_set_data_full ((dl), (q), (d), NULL)
1746 #define   g_datalist_id_remove_data(dl, q)      \
1747      g_datalist_id_set_data ((dl), (q), NULL)
1748 #define   g_datalist_get_data(dl, k)            \
1749      (g_datalist_id_get_data ((dl), g_quark_try_string (k)))
1750 #define   g_datalist_set_data_full(dl, k, d, f) \
1751      g_datalist_id_set_data_full ((dl), g_quark_from_string (k), (d), (f))
1752 #define   g_datalist_remove_no_notify(dl, k)    \
1753      g_datalist_id_remove_no_notify ((dl), g_quark_try_string (k))
1754 #define   g_datalist_set_data(dl, k, d)         \
1755      g_datalist_set_data_full ((dl), (k), (d), NULL)
1756 #define   g_datalist_remove_data(dl, k)         \
1757      g_datalist_id_set_data ((dl), g_quark_try_string (k), NULL)
1758
1759
1760 /* Location Associated Keyed Data
1761  */
1762 void      g_dataset_destroy             (gconstpointer    dataset_location);
1763 gpointer  g_dataset_id_get_data         (gconstpointer    dataset_location,
1764                                          GQuark           key_id);
1765 void      g_dataset_id_set_data_full    (gconstpointer    dataset_location,
1766                                          GQuark           key_id,
1767                                          gpointer         data,
1768                                          GDestroyNotify   destroy_func);
1769 void      g_dataset_id_remove_no_notify (gconstpointer    dataset_location,
1770                                          GQuark           key_id);
1771 void      g_dataset_foreach             (gconstpointer    dataset_location,
1772                                          GDataForeachFunc func,
1773                                          gpointer         user_data);
1774 #define   g_dataset_id_set_data(l, k, d)        \
1775      g_dataset_id_set_data_full ((l), (k), (d), NULL)
1776 #define   g_dataset_id_remove_data(l, k)        \
1777      g_dataset_id_set_data ((l), (k), NULL)
1778 #define   g_dataset_get_data(l, k)              \
1779      (g_dataset_id_get_data ((l), g_quark_try_string (k)))
1780 #define   g_dataset_set_data_full(l, k, d, f)   \
1781      g_dataset_id_set_data_full ((l), g_quark_from_string (k), (d), (f))
1782 #define   g_dataset_remove_no_notify(l, k)      \
1783      g_dataset_id_remove_no_notify ((l), g_quark_try_string (k))
1784 #define   g_dataset_set_data(l, k, d)           \
1785      g_dataset_set_data_full ((l), (k), (d), NULL)
1786 #define   g_dataset_remove_data(l, k)           \
1787      g_dataset_id_set_data ((l), g_quark_try_string (k), NULL)
1788
1789
1790 /* GScanner: Flexible lexical scanner for general purpose.
1791  */
1792
1793 /* Character sets */
1794 #define G_CSET_A_2_Z    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1795 #define G_CSET_a_2_z    "abcdefghijklmnopqrstuvwxyz"
1796 #define G_CSET_LATINC   "\300\301\302\303\304\305\306"\
1797                         "\307\310\311\312\313\314\315\316\317\320"\
1798                         "\321\322\323\324\325\326"\
1799                         "\330\331\332\333\334\335\336"
1800 #define G_CSET_LATINS   "\337\340\341\342\343\344\345\346"\
1801                         "\347\350\351\352\353\354\355\356\357\360"\
1802                         "\361\362\363\364\365\366"\
1803                         "\370\371\372\373\374\375\376\377"
1804
1805 /* Error types */
1806 typedef enum
1807 {
1808   G_ERR_UNKNOWN,
1809   G_ERR_UNEXP_EOF,
1810   G_ERR_UNEXP_EOF_IN_STRING,
1811   G_ERR_UNEXP_EOF_IN_COMMENT,
1812   G_ERR_NON_DIGIT_IN_CONST,
1813   G_ERR_DIGIT_RADIX,
1814   G_ERR_FLOAT_RADIX,
1815   G_ERR_FLOAT_MALFORMED
1816 } GErrorType;
1817
1818 /* Token types */
1819 typedef enum
1820 {
1821   G_TOKEN_EOF                   =   0,
1822
1823   G_TOKEN_LEFT_PAREN            = '(',
1824   G_TOKEN_RIGHT_PAREN           = ')',
1825   G_TOKEN_LEFT_CURLY            = '{',
1826   G_TOKEN_RIGHT_CURLY           = '}',
1827   G_TOKEN_LEFT_BRACE            = '[',
1828   G_TOKEN_RIGHT_BRACE           = ']',
1829   G_TOKEN_EQUAL_SIGN            = '=',
1830   G_TOKEN_COMMA                 = ',',
1831
1832   G_TOKEN_NONE                  = 256,
1833
1834   G_TOKEN_ERROR,
1835
1836   G_TOKEN_CHAR,
1837   G_TOKEN_BINARY,
1838   G_TOKEN_OCTAL,
1839   G_TOKEN_INT,
1840   G_TOKEN_HEX,
1841   G_TOKEN_FLOAT,
1842   G_TOKEN_STRING,
1843
1844   G_TOKEN_SYMBOL,
1845   G_TOKEN_IDENTIFIER,
1846   G_TOKEN_IDENTIFIER_NULL,
1847
1848   G_TOKEN_COMMENT_SINGLE,
1849   G_TOKEN_COMMENT_MULTI,
1850   G_TOKEN_LAST
1851 } GTokenType;
1852
1853 union   _GTokenValue
1854 {
1855   gpointer      v_symbol;
1856   gchar         *v_identifier;
1857   gulong        v_binary;
1858   gulong        v_octal;
1859   gulong        v_int;
1860   gdouble       v_float;
1861   gulong        v_hex;
1862   gchar         *v_string;
1863   gchar         *v_comment;
1864   guchar        v_char;
1865   guint         v_error;
1866 };
1867
1868 struct  _GScannerConfig
1869 {
1870   /* Character sets
1871    */
1872   gchar         *cset_skip_characters;          /* default: " \t\n" */
1873   gchar         *cset_identifier_first;
1874   gchar         *cset_identifier_nth;
1875   gchar         *cpair_comment_single;          /* default: "#\n" */
1876
1877   /* Should symbol lookup work case sensitive?
1878    */
1879   guint         case_sensitive : 1;
1880
1881   /* Boolean values to be adjusted "on the fly"
1882    * to configure scanning behaviour.
1883    */
1884   guint         skip_comment_multi : 1;         /* C like comment */
1885   guint         skip_comment_single : 1;        /* single line comment */
1886   guint         scan_comment_multi : 1;         /* scan multi line comments? */
1887   guint         scan_identifier : 1;
1888   guint         scan_identifier_1char : 1;
1889   guint         scan_identifier_NULL : 1;
1890   guint         scan_symbols : 1;
1891   guint         scan_binary : 1;
1892   guint         scan_octal : 1;
1893   guint         scan_float : 1;
1894   guint         scan_hex : 1;                   /* `0x0ff0' */
1895   guint         scan_hex_dollar : 1;            /* `$0ff0' */
1896   guint         scan_string_sq : 1;             /* string: 'anything' */
1897   guint         scan_string_dq : 1;             /* string: "\\-escapes!\n" */
1898   guint         numbers_2_int : 1;              /* bin, octal, hex => int */
1899   guint         int_2_float : 1;                /* int => G_TOKEN_FLOAT? */
1900   guint         identifier_2_string : 1;
1901   guint         char_2_token : 1;               /* return G_TOKEN_CHAR? */
1902   guint         symbol_2_token : 1;
1903   guint         scope_0_fallback : 1;           /* try scope 0 on lookups? */
1904 };
1905
1906 struct  _GScanner
1907 {
1908   /* unused fields */
1909   gpointer              user_data;
1910   guint                 max_parse_errors;
1911
1912   /* g_scanner_error() increments this field */
1913   guint                 parse_errors;
1914
1915   /* name of input stream, featured by the default message handler */
1916   const gchar           *input_name;
1917
1918   /* data pointer for derived structures */
1919   gpointer              derived_data;
1920
1921   /* link into the scanner configuration */
1922   GScannerConfig        *config;
1923
1924   /* fields filled in after g_scanner_get_next_token() */
1925   GTokenType            token;
1926   GTokenValue           value;
1927   guint                 line;
1928   guint                 position;
1929
1930   /* fields filled in after g_scanner_peek_next_token() */
1931   GTokenType            next_token;
1932   GTokenValue           next_value;
1933   guint                 next_line;
1934   guint                 next_position;
1935
1936   /* to be considered private */
1937   GHashTable            *symbol_table;
1938   gint                  input_fd;
1939   const gchar           *text;
1940   const gchar           *text_end;
1941   gchar                 *buffer;
1942   guint                 scope_id;
1943
1944   /* handler function for _warn and _error */
1945   GScannerMsgFunc       msg_handler;
1946 };
1947
1948 GScanner*       g_scanner_new                   (GScannerConfig *config_templ);
1949 void            g_scanner_destroy               (GScanner       *scanner);
1950 void            g_scanner_input_file            (GScanner       *scanner,
1951                                                  gint           input_fd);
1952 void            g_scanner_sync_file_offset      (GScanner       *scanner);
1953 void            g_scanner_input_text            (GScanner       *scanner,
1954                                                  const  gchar   *text,
1955                                                  guint          text_len);
1956 GTokenType      g_scanner_get_next_token        (GScanner       *scanner);
1957 GTokenType      g_scanner_peek_next_token       (GScanner       *scanner);
1958 GTokenType      g_scanner_cur_token             (GScanner       *scanner);
1959 GTokenValue     g_scanner_cur_value             (GScanner       *scanner);
1960 guint           g_scanner_cur_line              (GScanner       *scanner);
1961 guint           g_scanner_cur_position          (GScanner       *scanner);
1962 gboolean        g_scanner_eof                   (GScanner       *scanner);
1963 guint           g_scanner_set_scope             (GScanner       *scanner,
1964                                                  guint           scope_id);
1965 void            g_scanner_scope_add_symbol      (GScanner       *scanner,
1966                                                  guint           scope_id,
1967                                                  const gchar    *symbol,
1968                                                  gpointer       value);
1969 void            g_scanner_scope_remove_symbol   (GScanner       *scanner,
1970                                                  guint           scope_id,
1971                                                  const gchar    *symbol);
1972 gpointer        g_scanner_scope_lookup_symbol   (GScanner       *scanner,
1973                                                  guint           scope_id,
1974                                                  const gchar    *symbol);
1975 void            g_scanner_scope_foreach_symbol  (GScanner       *scanner,
1976                                                  guint           scope_id,
1977                                                  GHFunc          func,
1978                                                  gpointer        user_data);
1979 gpointer        g_scanner_lookup_symbol         (GScanner       *scanner,
1980                                                  const gchar    *symbol);
1981 void            g_scanner_freeze_symbol_table   (GScanner       *scanner);
1982 void            g_scanner_thaw_symbol_table     (GScanner       *scanner);
1983 void            g_scanner_unexp_token           (GScanner       *scanner,
1984                                                  GTokenType     expected_token,
1985                                                  const gchar    *identifier_spec,
1986                                                  const gchar    *symbol_spec,
1987                                                  const gchar    *symbol_name,
1988                                                  const gchar    *message,
1989                                                  gint            is_error);
1990 void            g_scanner_error                 (GScanner       *scanner,
1991                                                  const gchar    *format,
1992                                                  ...) G_GNUC_PRINTF (2,3);
1993 void            g_scanner_warn                  (GScanner       *scanner,
1994                                                  const gchar    *format,
1995                                                  ...) G_GNUC_PRINTF (2,3);
1996 gint            g_scanner_stat_mode             (const gchar    *filename);
1997 /* keep downward source compatibility */
1998 #define         g_scanner_add_symbol( scanner, symbol, value )  G_STMT_START { \
1999   g_scanner_scope_add_symbol ((scanner), 0, (symbol), (value)); \
2000 } G_STMT_END
2001 #define         g_scanner_remove_symbol( scanner, symbol )      G_STMT_START { \
2002   g_scanner_scope_remove_symbol ((scanner), 0, (symbol)); \
2003 } G_STMT_END
2004 #define         g_scanner_foreach_symbol( scanner, func, data ) G_STMT_START { \
2005   g_scanner_scope_foreach_symbol ((scanner), 0, (func), (data)); \
2006 } G_STMT_END
2007
2008
2009 /* GCompletion
2010  */
2011
2012 struct _GCompletion
2013 {
2014   GList* items;
2015   GCompletionFunc func;
2016
2017   gchar* prefix;
2018   GList* cache;
2019 };
2020
2021 GCompletion* g_completion_new          (GCompletionFunc func);
2022 void         g_completion_add_items    (GCompletion*    cmp,
2023                                         GList*          items);
2024 void         g_completion_remove_items (GCompletion*    cmp,
2025                                         GList*          items);
2026 void         g_completion_clear_items  (GCompletion*    cmp);
2027 GList*       g_completion_complete     (GCompletion*    cmp,
2028                                         gchar*          prefix,
2029                                         gchar**         new_prefix);
2030 void         g_completion_free         (GCompletion*    cmp);
2031
2032
2033 /* GDate
2034  *
2035  * Date calculations (not time for now, to be resolved). These are a
2036  * mutant combination of Steffen Beyer's DateCalc routines
2037  * (http://www.perl.com/CPAN/authors/id/STBEY/) and Jon Trowbridge's
2038  * date routines (written for in-house software).  Written by Havoc
2039  * Pennington <hp@pobox.com>
2040  */
2041
2042 typedef guint16 GDateYear;
2043 typedef guint8  GDateDay;   /* day of the month */
2044 typedef struct _GDate GDate;
2045 /* make struct tm known without having to include time.h */
2046 struct tm;
2047
2048 /* enum used to specify order of appearance in parsed date strings */
2049 typedef enum
2050 {
2051   G_DATE_DAY   = 0,
2052   G_DATE_MONTH = 1,
2053   G_DATE_YEAR  = 2
2054 } GDateDMY;
2055
2056 /* actual week and month values */
2057 typedef enum
2058 {
2059   G_DATE_BAD_WEEKDAY  = 0,
2060   G_DATE_MONDAY       = 1,
2061   G_DATE_TUESDAY      = 2,
2062   G_DATE_WEDNESDAY    = 3,
2063   G_DATE_THURSDAY     = 4,
2064   G_DATE_FRIDAY       = 5,
2065   G_DATE_SATURDAY     = 6,
2066   G_DATE_SUNDAY       = 7
2067 } GDateWeekday;
2068 typedef enum
2069 {
2070   G_DATE_BAD_MONTH = 0,
2071   G_DATE_JANUARY   = 1,
2072   G_DATE_FEBRUARY  = 2,
2073   G_DATE_MARCH     = 3,
2074   G_DATE_APRIL     = 4,
2075   G_DATE_MAY       = 5,
2076   G_DATE_JUNE      = 6,
2077   G_DATE_JULY      = 7,
2078   G_DATE_AUGUST    = 8,
2079   G_DATE_SEPTEMBER = 9,
2080   G_DATE_OCTOBER   = 10,
2081   G_DATE_NOVEMBER  = 11,
2082   G_DATE_DECEMBER  = 12
2083 } GDateMonth;
2084
2085 #define G_DATE_BAD_JULIAN 0U
2086 #define G_DATE_BAD_DAY    0U
2087 #define G_DATE_BAD_YEAR   0U
2088
2089 /* Note: directly manipulating structs is generally a bad idea, but
2090  * in this case it's an *incredibly* bad idea, because all or part
2091  * of this struct can be invalid at any given time. Use the functions,
2092  * or you will get hosed, I promise.
2093  */
2094 struct _GDate
2095 {
2096   guint julian_days : 32; /* julian days representation - we use a
2097                            *  bitfield hoping that 64 bit platforms
2098                            *  will pack this whole struct in one big
2099                            *  int
2100                            */
2101
2102   guint julian : 1;    /* julian is valid */
2103   guint dmy    : 1;    /* dmy is valid */
2104
2105   /* DMY representation */
2106   guint day    : 6;
2107   guint month  : 4;
2108   guint year   : 16;
2109 };
2110
2111 /* g_date_new() returns an invalid date, you then have to _set() stuff
2112  * to get a usable object. You can also allocate a GDate statically,
2113  * then call g_date_clear() to initialize.
2114  */
2115 GDate*       g_date_new                   (void);
2116 GDate*       g_date_new_dmy               (GDateDay     day,
2117                                            GDateMonth   month,
2118                                            GDateYear    year);
2119 GDate*       g_date_new_julian            (guint32      julian_day);
2120 void         g_date_free                  (GDate       *date);
2121
2122 /* check g_date_valid() after doing an operation that might fail, like
2123  * _parse.  Almost all g_date operations are undefined on invalid
2124  * dates (the exceptions are the mutators, since you need those to
2125  * return to validity).
2126  */
2127 gboolean     g_date_valid                 (GDate       *date);
2128 gboolean     g_date_valid_day             (GDateDay     day);
2129 gboolean     g_date_valid_month           (GDateMonth   month);
2130 gboolean     g_date_valid_year            (GDateYear    year);
2131 gboolean     g_date_valid_weekday         (GDateWeekday weekday);
2132 gboolean     g_date_valid_julian          (guint32      julian_date);
2133 gboolean     g_date_valid_dmy             (GDateDay     day,
2134                                            GDateMonth   month,
2135                                            GDateYear    year);
2136
2137 GDateWeekday g_date_weekday               (GDate       *date);
2138 GDateMonth   g_date_month                 (GDate       *date);
2139 GDateYear    g_date_year                  (GDate       *date);
2140 GDateDay     g_date_day                   (GDate       *date);
2141 guint32      g_date_julian                (GDate       *date);
2142 guint        g_date_day_of_year           (GDate       *date);
2143
2144 /* First monday/sunday is the start of week 1; if we haven't reached
2145  * that day, return 0. These are not ISO weeks of the year; that
2146  * routine needs to be added.
2147  * these functions return the number of weeks, starting on the
2148  * corrsponding day
2149  */
2150 guint        g_date_monday_week_of_year   (GDate      *date);
2151 guint        g_date_sunday_week_of_year   (GDate      *date);
2152
2153 /* If you create a static date struct you need to clear it to get it
2154  * in a sane state before use. You can clear a whole array at
2155  * once with the ndates argument.
2156  */
2157 void         g_date_clear                 (GDate       *date,
2158                                            guint        n_dates);
2159
2160 /* The parse routine is meant for dates typed in by a user, so it
2161  * permits many formats but tries to catch common typos. If your data
2162  * needs to be strictly validated, it is not an appropriate function.
2163  */
2164 void         g_date_set_parse             (GDate       *date,
2165                                            const gchar *str);
2166 void         g_date_set_time              (GDate       *date,
2167                                            GTime        time);
2168 void         g_date_set_month             (GDate       *date,
2169                                            GDateMonth   month);
2170 void         g_date_set_day               (GDate       *date,
2171                                            GDateDay     day);
2172 void         g_date_set_year              (GDate       *date,
2173                                            GDateYear    year);
2174 void         g_date_set_dmy               (GDate       *date,
2175                                            GDateDay     day,
2176                                            GDateMonth   month,
2177                                            GDateYear    y);
2178 void         g_date_set_julian            (GDate       *date,
2179                                            guint32      julian_date);
2180 gboolean     g_date_is_first_of_month     (GDate       *date);
2181 gboolean     g_date_is_last_of_month      (GDate       *date);
2182
2183 /* To go forward by some number of weeks just go forward weeks*7 days */
2184 void         g_date_add_days              (GDate       *date,
2185                                            guint        n_days);
2186 void         g_date_subtract_days         (GDate       *date,
2187                                            guint        n_days);
2188
2189 /* If you add/sub months while day > 28, the day might change */
2190 void         g_date_add_months            (GDate       *date,
2191                                            guint        n_months);
2192 void         g_date_subtract_months       (GDate       *date,
2193                                            guint        n_months);
2194
2195 /* If it's feb 29, changing years can move you to the 28th */
2196 void         g_date_add_years             (GDate       *date,
2197                                            guint        n_years);
2198 void         g_date_subtract_years        (GDate       *date,
2199                                            guint        n_years);
2200 gboolean     g_date_is_leap_year          (GDateYear    year);
2201 guint8       g_date_days_in_month         (GDateMonth   month,
2202                                            GDateYear    year);
2203 guint8       g_date_monday_weeks_in_year  (GDateYear    year);
2204 guint8       g_date_sunday_weeks_in_year  (GDateYear    year);
2205
2206 /* qsort-friendly (with a cast...) */
2207 gint         g_date_compare               (GDate       *lhs,
2208                                            GDate       *rhs);
2209 void         g_date_to_struct_tm          (GDate       *date,
2210                                            struct tm   *tm);
2211
2212 /* Just like strftime() except you can only use date-related formats.
2213  *   Using a time format is undefined.
2214  */
2215 gsize        g_date_strftime              (gchar       *s,
2216                                            gsize        slen,
2217                                            const gchar *format,
2218                                            GDate       *date);
2219
2220
2221 /* GRelation
2222  *
2223  * Indexed Relations.  Imagine a really simple table in a
2224  * database.  Relations are not ordered.  This data type is meant for
2225  * maintaining a N-way mapping.
2226  *
2227  * g_relation_new() creates a relation with FIELDS fields
2228  *
2229  * g_relation_destroy() frees all resources
2230  * g_tuples_destroy() frees the result of g_relation_select()
2231  *
2232  * g_relation_index() indexes relation FIELD with the provided
2233  *   equality and hash functions.  this must be done before any
2234  *   calls to insert are made.
2235  *
2236  * g_relation_insert() inserts a new tuple.  you are expected to
2237  *   provide the right number of fields.
2238  *
2239  * g_relation_delete() deletes all relations with KEY in FIELD
2240  * g_relation_select() returns ...
2241  * g_relation_count() counts ...
2242  */
2243
2244 GRelation* g_relation_new     (gint         fields);
2245 void       g_relation_destroy (GRelation   *relation);
2246 void       g_relation_index   (GRelation   *relation,
2247                                gint         field,
2248                                GHashFunc    hash_func,
2249                                GCompareFunc key_compare_func);
2250 void       g_relation_insert  (GRelation   *relation,
2251                                ...);
2252 gint       g_relation_delete  (GRelation   *relation,
2253                                gconstpointer  key,
2254                                gint         field);
2255 GTuples*   g_relation_select  (GRelation   *relation,
2256                                gconstpointer  key,
2257                                gint         field);
2258 gint       g_relation_count   (GRelation   *relation,
2259                                gconstpointer  key,
2260                                gint         field);
2261 gboolean   g_relation_exists  (GRelation   *relation,
2262                                ...);
2263 void       g_relation_print   (GRelation   *relation);
2264
2265 void       g_tuples_destroy   (GTuples     *tuples);
2266 gpointer   g_tuples_index     (GTuples     *tuples,
2267                                gint         index,
2268                                gint         field);
2269
2270
2271 /* Prime numbers.
2272  */
2273
2274 /* This function returns prime numbers spaced by approximately 1.5-2.0
2275  * and is for use in resizing data structures which prefer
2276  * prime-valued sizes.  The closest spaced prime function returns the
2277  * next largest prime, or the highest it knows about which is about
2278  * MAXINT/4.
2279  */
2280 guint      g_spaced_primes_closest (guint num);
2281
2282
2283 /* GIOChannel
2284  */
2285
2286 typedef struct _GIOFuncs GIOFuncs;
2287 typedef enum
2288 {
2289   G_IO_ERROR_NONE,
2290   G_IO_ERROR_AGAIN,
2291   G_IO_ERROR_INVAL,
2292   G_IO_ERROR_UNKNOWN
2293 } GIOError;
2294 typedef enum
2295 {
2296   G_SEEK_CUR,
2297   G_SEEK_SET,
2298   G_SEEK_END
2299 } GSeekType;
2300 typedef enum
2301 {
2302   G_IO_IN       GLIB_SYSDEF_POLLIN,
2303   G_IO_OUT      GLIB_SYSDEF_POLLOUT,
2304   G_IO_PRI      GLIB_SYSDEF_POLLPRI,
2305   G_IO_ERR      GLIB_SYSDEF_POLLERR,
2306   G_IO_HUP      GLIB_SYSDEF_POLLHUP,
2307   G_IO_NVAL     GLIB_SYSDEF_POLLNVAL
2308 } GIOCondition;
2309
2310 struct _GIOChannel
2311 {
2312   guint channel_flags;
2313   guint ref_count;
2314   GIOFuncs *funcs;
2315 };
2316
2317 typedef gboolean (*GIOFunc) (GIOChannel   *source,
2318                              GIOCondition  condition,
2319                              gpointer      data);
2320 struct _GIOFuncs
2321 {
2322   GIOError (*io_read)   (GIOChannel     *channel,
2323                          gchar          *buf,
2324                          guint           count,
2325                          guint          *bytes_read);
2326   GIOError (*io_write)  (GIOChannel     *channel,
2327                          gchar          *buf,
2328                          guint           count,
2329                          guint          *bytes_written);
2330   GIOError (*io_seek)   (GIOChannel     *channel,
2331                          gint            offset,
2332                          GSeekType       type);
2333   void (*io_close)      (GIOChannel     *channel);
2334   guint (*io_add_watch) (GIOChannel     *channel,
2335                          gint            priority,
2336                          GIOCondition    condition,
2337                          GIOFunc         func,
2338                          gpointer        user_data,
2339                          GDestroyNotify  notify);
2340   void (*io_free)       (GIOChannel     *channel);
2341 };
2342
2343 void        g_io_channel_init   (GIOChannel    *channel);
2344 void        g_io_channel_ref    (GIOChannel    *channel);
2345 void        g_io_channel_unref  (GIOChannel    *channel);
2346 GIOError    g_io_channel_read   (GIOChannel    *channel,
2347                                  gchar         *buf,
2348                                  guint          count,
2349                                  guint         *bytes_read);
2350 GIOError  g_io_channel_write    (GIOChannel    *channel,
2351                                  gchar         *buf,
2352                                  guint          count,
2353                                  guint         *bytes_written);
2354 GIOError  g_io_channel_seek     (GIOChannel    *channel,
2355                                  gint           offset,
2356                                  GSeekType      type);
2357 void      g_io_channel_close    (GIOChannel    *channel);
2358 guint     g_io_add_watch_full   (GIOChannel    *channel,
2359                                  gint           priority,
2360                                  GIOCondition   condition,
2361                                  GIOFunc        func,
2362                                  gpointer       user_data,
2363                                  GDestroyNotify notify);
2364 guint    g_io_add_watch         (GIOChannel    *channel,
2365                                  GIOCondition   condition,
2366                                  GIOFunc        func,
2367                                  gpointer       user_data);
2368
2369
2370 /* Main loop
2371  */
2372 typedef struct _GTimeVal        GTimeVal;
2373 typedef struct _GSourceFuncs    GSourceFuncs;
2374 typedef struct _GMainLoop       GMainLoop;      /* Opaque */
2375
2376 struct _GTimeVal
2377 {
2378   glong tv_sec;
2379   glong tv_usec;
2380 };
2381 struct _GSourceFuncs
2382 {
2383   gboolean (*prepare)  (gpointer  source_data,
2384                         GTimeVal *current_time,
2385                         gint     *timeout);
2386   gboolean (*check)    (gpointer  source_data,
2387                         GTimeVal *current_time);
2388   gboolean (*dispatch) (gpointer  source_data,
2389                         GTimeVal *current_time,
2390                         gpointer  user_data);
2391   GDestroyNotify destroy;
2392 };
2393
2394 /* Standard priorities */
2395
2396 #define G_PRIORITY_HIGH            -100
2397 #define G_PRIORITY_DEFAULT          0
2398 #define G_PRIORITY_HIGH_IDLE        100
2399 #define G_PRIORITY_DEFAULT_IDLE     200
2400 #define G_PRIORITY_LOW              300
2401
2402 typedef gboolean (*GSourceFunc) (gpointer data);
2403
2404 /* Hooks for adding to the main loop */
2405 guint g_source_add                  (gint           priority,
2406                                      gboolean       can_recurse,
2407                                      GSourceFuncs  *funcs,
2408                                      gpointer       source_data,
2409                                      gpointer       user_data,
2410                                      GDestroyNotify notify);
2411 void g_source_remove                (guint          tag);
2412 void g_source_remove_by_user_data   (gpointer       user_data);
2413 void g_source_remove_by_source_data (gpointer       source_data);
2414
2415 void g_get_current_time             (GTimeVal      *result);
2416
2417 /* Running the main loop */
2418 GMainLoop*      g_main_new              (gboolean        is_running);
2419 void            g_main_run              (GMainLoop      *loop);
2420 void            g_main_quit             (GMainLoop      *loop);
2421 void            g_main_destroy          (GMainLoop      *loop);
2422 gboolean        g_main_is_running       (GMainLoop      *loop);
2423
2424 /* Run a single iteration of the mainloop. If block is FALSE,
2425  * will never block
2426  */
2427 gboolean        g_main_iteration        (gboolean       may_block);
2428
2429 /* See if any events are pending */
2430 gboolean        g_main_pending          (void);
2431
2432 /* Idles and timeouts */
2433 guint           g_timeout_add_full      (gint           priority,
2434                                          guint          interval,
2435                                          GSourceFunc    function,
2436                                          gpointer       data,
2437                                          GDestroyNotify notify);
2438 guint           g_timeout_add           (guint          interval,
2439                                          GSourceFunc    function,
2440                                          gpointer       data);
2441 guint           g_idle_add              (GSourceFunc    function,
2442                                          gpointer       data);
2443 guint           g_idle_add_full         (gint           priority,
2444                                          GSourceFunc    function,
2445                                          gpointer       data,
2446                                          GDestroyNotify destroy);
2447
2448 /* GPollFD
2449  *
2450  * Unix-specific IO and main loop calls
2451  */
2452
2453 typedef struct _GPollFD GPollFD;
2454 typedef gint    (*GPollFunc)    (GPollFD *ufds,
2455                                  guint    nfsd,
2456                                  gint     timeout);
2457 struct _GPollFD
2458 {
2459   gint          fd;
2460   gushort       events;
2461   gushort       revents;
2462 };
2463
2464 void        g_main_add_poll          (GPollFD    *fd,
2465                                       gint        priority);
2466 void        g_main_remove_poll       (GPollFD    *fd);
2467 void        g_main_set_poll_func     (GPollFunc   func);
2468
2469 GIOChannel* g_io_channel_unix_new    (int         fd);
2470 gint        g_io_channel_unix_get_fd (GIOChannel *channel);
2471
2472
2473 /* old IO Channels */
2474 #if 0
2475 /* IO Channels.
2476  * These are used for plug-in communication in the GIMP, for instance.
2477  * On Unix, it's simply an encapsulated file descriptor (a pipe).
2478  * On Windows, it's a handle to an anonymouos pipe, *and* (in the case
2479  * of the writable end) a thread id to post a message to when you have written
2480  * stuff.
2481  */
2482 struct _GIOChannel
2483 {
2484   gint fd;                      /* file handle (pseudo such in Win32) */
2485 #ifdef NATIVE_WIN32
2486   guint peer;                   /* thread to post message to */
2487   guint peer_fd;                /* read handle (in the other process) */
2488   guint offset;                 /* counter of accumulated bytes, to
2489                                  * be included in the message posted
2490                                  * so we keep in sync.
2491                                  */
2492   guint need_wakeups;           /* in output channels whether the reader
2493                                  * needs wakeups
2494                                  */
2495 #endif
2496 };
2497 GIOChannel *g_iochannel_new            (gint        fd);
2498 void        g_iochannel_free           (GIOChannel *channel);
2499 void        g_iochannel_close_and_free (GIOChannel *channel);
2500 void        g_iochannel_wakeup_peer    (GIOChannel *channel);
2501 #ifndef NATIVE_WIN32
2502 #  define   g_iochannel_wakeup_peer(channel) G_STMT_START { } G_STMT_END
2503 #endif
2504 #endif  /* old IO Channels */
2505
2506
2507 /* Windows emulation stubs for common unix functions
2508  */
2509 #ifdef NATIVE_WIN32
2510 #  define MAXPATHLEN 1024
2511 #  ifdef _MSC_VER
2512 typedef int pid_t;
2513
2514 /* These POSIXish functions are available in the Microsoft C library
2515  * prefixed with underscore (which of course technically speaking is
2516  * the Right Thing, as they are non-ANSI. Not that being non-ANSI
2517  * prevents Microsoft from practically requiring you to include
2518  * <windows.h> every now and then...).
2519  *
2520  * You still need to include the appropriate headers to get the
2521  * prototypes, <io.h> or <direct.h>.
2522  *
2523  * For some functions, we provide emulators in glib, which are prefixed
2524  * with gwin_.
2525  */
2526 #    define getcwd              _getcwd
2527 #    define getpid              _getpid
2528 #    define access              _access
2529 #    define open                _open
2530 #    define read                _read
2531 #    define write               _write
2532 #    define lseek               _lseek
2533 #    define close               _close
2534 #    define pipe(phandles)      _pipe (phandles, 4096, _O_BINARY)
2535 #    define popen               _popen
2536 #    define pclose              _pclose
2537 #    define fdopen              _fdopen
2538 #    define ftruncate(fd, size) gwin_ftruncate (fd, size)
2539 #    define opendir             gwin_opendir
2540 #    define readdir             gwin_readdir
2541 #    define rewinddir           gwin_rewinddir
2542 #    define closedir            gwin_closedir
2543 #    define NAME_MAX 255
2544 struct DIR
2545 {
2546   gchar    *dir_name;
2547   gboolean  just_opened;
2548   guint     find_file_handle;
2549   gpointer  find_file_data;
2550 };
2551 typedef struct DIR DIR;
2552 struct dirent
2553 {
2554   gchar  d_name[NAME_MAX + 1];
2555 };
2556 /* emulation functions */
2557 extern int      gwin_ftruncate  (gint            f,
2558                                  guint           size);
2559 DIR*            gwin_opendir    (const gchar    *dirname);
2560 struct dirent*  gwin_readdir    (DIR            *dir);
2561 void            gwin_rewinddir  (DIR            *dir);
2562 gint            gwin_closedir   (DIR            *dir);
2563 #  endif /* _MSC_VER */
2564 #endif   /* NATIVE_WIN32 */
2565
2566
2567 /* GLib Thread support
2568  */
2569 typedef struct _GMutex          GMutex;
2570 typedef struct _GCond           GCond;
2571 typedef struct _GPrivate        GPrivate;
2572 typedef struct _GStaticPrivate  GStaticPrivate;
2573 typedef struct _GThreadFunctions GThreadFunctions;
2574 struct _GThreadFunctions
2575 {
2576   GMutex*  (*mutex_new)       (void);
2577   void     (*mutex_lock)      (GMutex           *mutex);
2578   gboolean (*mutex_trylock)   (GMutex           *mutex);
2579   void     (*mutex_unlock)    (GMutex           *mutex);
2580   void     (*mutex_free)      (GMutex           *mutex);
2581   GCond*   (*cond_new)        (void);
2582   void     (*cond_signal)     (GCond            *cond);
2583   void     (*cond_broadcast)  (GCond            *cond);
2584   void     (*cond_wait)       (GCond            *cond,
2585                                GMutex           *mutex);
2586   gboolean (*cond_timed_wait) (GCond            *cond,
2587                                GMutex           *mutex,
2588                                GTimeVal         *end_time);
2589   void      (*cond_free)      (GCond            *cond);
2590   GPrivate* (*private_new)    (GDestroyNotify    destructor);
2591   gpointer  (*private_get)    (GPrivate         *private_key);
2592   void      (*private_set)    (GPrivate         *private_key,
2593                                gpointer          data);
2594 };
2595
2596 GUTILS_C_VAR GThreadFunctions   g_thread_functions_for_glib_use;
2597 GUTILS_C_VAR gboolean           g_thread_use_default_impl;
2598 GUTILS_C_VAR gboolean           g_threads_got_initialized;
2599
2600 /* initializes the mutex/cond/private implementation for glib, might
2601  * only be called once, and must not be called directly or indirectly
2602  * from another glib-function, e.g. as a callback.
2603  */
2604 void    g_thread_init   (GThreadFunctions       *vtable);
2605
2606 /* internal function for fallback static mutex implementation */
2607 GMutex* g_static_mutex_get_mutex_impl   (GMutex **mutex);
2608
2609 /* shorthands for conditional and unconditional function calls */
2610 #define G_THREAD_UF(name, arglist) \
2611     (*g_thread_functions_for_glib_use . name) arglist
2612 #define G_THREAD_CF(name, fail, arg) \
2613     (g_thread_supported () ? G_THREAD_UF (name, arg) : (fail))
2614 /* keep in mind, all those mutexes and static mutexes are not
2615  * recursive in general, don't rely on that
2616  */
2617 #define g_thread_supported()    (g_threads_got_initialized)
2618 #define g_mutex_new()            G_THREAD_UF (mutex_new,      ())
2619 #define g_mutex_lock(mutex)      G_THREAD_CF (mutex_lock,     (void)0, (mutex))
2620 #define g_mutex_trylock(mutex)   G_THREAD_CF (mutex_trylock,  TRUE,    (mutex))
2621 #define g_mutex_unlock(mutex)    G_THREAD_CF (mutex_unlock,   (void)0, (mutex))
2622 #define g_mutex_free(mutex)      G_THREAD_CF (mutex_free,     (void)0, (mutex))
2623 #define g_cond_new()             G_THREAD_UF (cond_new,       ())
2624 #define g_cond_signal(cond)      G_THREAD_CF (cond_signal,    (void)0, (cond))
2625 #define g_cond_broadcast(cond)   G_THREAD_CF (cond_broadcast, (void)0, (cond))
2626 #define g_cond_wait(cond, mutex) G_THREAD_CF (cond_wait,      (void)0, (cond, \
2627                                                                         mutex))
2628 #define g_cond_free(cond)        G_THREAD_CF (cond_free,      (void)0, (cond))
2629 #define g_cond_timed_wait(cond, mutex, abs_time) G_THREAD_CF (cond_timed_wait, \
2630                                                               TRUE, \
2631                                                               (cond, mutex, \
2632                                                                abs_time))
2633 #define g_private_new(destructor)         G_THREAD_UF (private_new, (destructor))
2634 #define g_private_get(private_key)        G_THREAD_CF (private_get, \
2635                                                        ((gpointer)private_key), \
2636                                                        (private_key))
2637 #define g_private_set(private_key, value) G_THREAD_CF (private_set, \
2638                                                        (void) (private_key = \
2639                                                         (GPrivate*) (value)), \
2640                                                        (private_key, value))
2641 /* GStaticMutexes can be statically initialized with the value
2642  * G_STATIC_MUTEX_INIT, and then they can directly be used, that is
2643  * much easier, than having to explicitly allocate the mutex before
2644  * use
2645  */
2646 #define g_static_mutex_lock(mutex) \
2647     g_mutex_lock (g_static_mutex_get_mutex (mutex))
2648 #define g_static_mutex_trylock(mutex) \
2649     g_mutex_trylock (g_static_mutex_get_mutex (mutex))
2650 #define g_static_mutex_unlock(mutex) \
2651     g_mutex_unlock (g_static_mutex_get_mutex (mutex))
2652 struct _GStaticPrivate
2653 {
2654   guint index;
2655 };
2656 #define G_STATIC_PRIVATE_INIT { 0 }
2657 gpointer g_static_private_get (GStaticPrivate   *private_key);
2658 void     g_static_private_set (GStaticPrivate   *private_key,
2659                                gpointer          data,
2660                                GDestroyNotify    notify);
2661
2662 /* these are some convenience macros that expand to nothing if GLib was
2663  * configured with --deisable-threads. for using StaticMutexes, you
2664  * declare them with G_LOCK_DECLARE_STATIC (name) or G_LOCK_DECLARE (name)
2665  * if you need to export the mutex. name is a unique identifier for the
2666  * protected varibale or code portion. locking, testing and unlocking of
2667  * such mutexes can be done with G_LOCK(), G_UNLOCK() and G_TRYLOCK()
2668  * respectively.
2669  */
2670 extern void glib_dummy_decl (void);
2671 #define G_LOCK_NAME(name)               (g__ ## name ## _lock)
2672 #ifdef  G_THREADS_ENABLED
2673 #  define G_LOCK_DECLARE_STATIC(name)   static G_LOCK_DECLARE (name)
2674 #  define G_LOCK_DECLARE(name)          \
2675     GStaticMutex G_LOCK_NAME (name) = G_STATIC_MUTEX_INIT
2676
2677 #  ifdef G_DEBUG_LOCKS
2678 #    define G_LOCK(name)                G_STMT_START{             \
2679         g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG,                   \
2680                "file %s: line %d (%s): locking: %s ",             \
2681                __FILE__,        __LINE__, G_GNUC_PRETTY_FUNCTION, \
2682                #name);                                            \
2683         g_static_mutex_lock (G_LOCK_NAME (name));                 \
2684      }G_STMT_END
2685 #    define G_UNLOCK(name)              G_STMT_START{             \
2686         g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG,                   \
2687                "file %s: line %d (%s): unlocking: %s ",           \
2688                __FILE__,        __LINE__, G_GNUC_PRETTY_FUNCTION, \
2689                #name);                                            \
2690        g_static_mutex_unlock (G_LOCK_NAME (name));                \
2691      }G_STMT_END
2692 #    define G_TRYLOCK(name)             G_STMT_START{             \
2693         g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG,                   \
2694                "file %s: line %d (%s): try locking: %s ",         \
2695                __FILE__,        __LINE__, G_GNUC_PRETTY_FUNCTION, \
2696                #name);                                            \
2697      }G_STMT_END,       g_static_mutex_trylock (G_LOCK_NAME (name))
2698 #  else  /* !G_DEBUG_LOCKS */
2699 #    define G_LOCK(name) g_static_mutex_lock       (G_LOCK_NAME (name))
2700 #    define G_UNLOCK(name) g_static_mutex_unlock   (G_LOCK_NAME (name))
2701 #    define G_TRYLOCK(name) g_static_mutex_trylock (G_LOCK_NAME (name))
2702 #  endif /* !G_DEBUG_LOCKS */
2703 #else   /* !G_THREADS_ENABLED */
2704 #  define G_LOCK_DECLARE_STATIC(name)   extern void glib_dummy_decl (void)
2705 #  define G_LOCK_DECLARE(name)          extern void glib_dummy_decl (void)
2706 #  define G_LOCK(name)
2707 #  define G_UNLOCK(name)
2708 #  define G_TRYLOCK(name)               (FALSE)
2709 #endif  /* !G_THREADS_ENABLED */
2710
2711 #ifdef __cplusplus
2712 }
2713 #endif /* __cplusplus */
2714
2715
2716 #endif /* __G_LIB_H__ */