thodg/libgit2/src/util.h

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• Hash : ced645ea
  Author :
  Date : 2009-01-12T19:42:13
  

  Add git__dirname and git__basename utility routines These routines are intended to extract the directory and base name from a path string. Note that these routines do not interact with any filesystem and work only on the text of the path. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

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• src/util.h

• #ifndef INCLUDE_util_h__
  #define INCLUDE_util_h__
  
  #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
  
  extern void *git__malloc(size_t);
  extern void *git__calloc(size_t, size_t);
  extern char *git__strdup(const char *);
  
  #ifndef GIT__NO_HIDE_MALLOC
  # define GIT__FORBID_MALLOC do_not_use_malloc_directly
  
  # ifdef malloc
  #  undef malloc
  # endif
  # define malloc(a)          GIT__FORBID_MALLOC
  
  # ifdef calloc
  #  undef calloc
  # endif
  # define calloc(a,b)        GIT__FORBID_MALLOC
  
  # ifdef strdup
  #  undef strdup
  # endif
  # define strdup(a)          GIT__FORBID_MALLOC
  #endif
  
  extern int git__fmt(char *, size_t, const char *, ...)
  	GIT_FORMAT_PRINTF(3, 4);
  extern int git__prefixcmp(const char *str, const char *prefix);
  extern int git__suffixcmp(const char *str, const char *suffix);
  
  extern int git__dirname(char *dir, size_t n, char *path);
  extern int git__basename(char *base, size_t n, char *path);
  
  /** @return true if p fits into the range of a size_t */
  GIT_INLINE(int) git__is_sizet(off_t p)
  {
  	size_t r = (size_t)p;
  	return p == r;
  }
  
  /*
   * Realloc the buffer pointed at by variable 'x' so that it can hold
   * at least 'nr' entries; the number of entries currently allocated
   * is 'alloc', using the standard growing factor alloc_nr() macro.
   *
   * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
   */
  #define alloc_nr(x) (((x)+16)*3/2)
  #define ALLOC_GROW(x, nr, alloc) \
  	do { \
  		if ((nr) > alloc) { \
  			if (alloc_nr(alloc) < (nr)) \
  				alloc = (nr); \
  			else \
  				alloc = alloc_nr(alloc); \
  			x = xrealloc((x), alloc * sizeof(*(x))); \
  		} \
  	} while(0)
  
  #endif /* INCLUDE_util_h__ */
  

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