src/util.h

   1 #ifndef INCLUDE_util_h__
   2 #define INCLUDE_util_h__
   3
   4 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
   5
   6 extern void *git__malloc(size_t);
   7 extern void *git__calloc(size_t, size_t);
   8 extern char *git__strdup(const char *);
   9
  10 #ifndef GIT__NO_HIDE_MALLOC
  11 # define GIT__FORBID_MALLOC do_not_use_malloc_directly
  12
  13 # ifdef malloc
  14 #  undef malloc
  15 # endif
  16 # define malloc(a)          GIT__FORBID_MALLOC
  17
  18 # ifdef calloc
  19 #  undef calloc
  20 # endif
  21 # define calloc(a,b)        GIT__FORBID_MALLOC
  22
  23 # ifdef strdup
  24 #  undef strdup
  25 # endif
  26 # define strdup(a)          GIT__FORBID_MALLOC
  27 #endif
  28
  29 extern int git__fmt(char *, size_t, const char *, ...)
  30         GIT_FORMAT_PRINTF(3, 4);
  31 extern int git__prefixcmp(const char *str, const char *prefix);
  32 extern int git__suffixcmp(const char *str, const char *suffix);
  33
  34 extern int git__dirname(char *dir, size_t n, char *path);
  35 extern int git__basename(char *base, size_t n, char *path);
  36
  37 extern void git__hexdump(const char *buffer, size_t n);
  38
  39 /** @return true if p fits into the range of a size_t */
  40 GIT_INLINE(int) git__is_sizet(off_t p)
  41 {
  42         size_t r = (size_t)p;
  43         return p == (off_t)r;
  44 }
  45
  46 /*
  47  * Realloc the buffer pointed at by variable 'x' so that it can hold
  48  * at least 'nr' entries; the number of entries currently allocated
  49  * is 'alloc', using the standard growing factor alloc_nr() macro.
  50  *
  51  * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
  52  */
  53 #define alloc_nr(x) (((x)+16)*3/2)
  54 #define ALLOC_GROW(x, nr, alloc) \
  55         do { \
  56                 if ((nr) > alloc) { \
  57                         if (alloc_nr(alloc) < (nr)) \
  58                                 alloc = (nr); \
  59                         else \
  60                                 alloc = alloc_nr(alloc); \
  61                         x = xrealloc((x), alloc * sizeof(*(x))); \
  62                 } \
  63         } while (0)
  64
  65 #endif /* INCLUDE_util_h__ */