thodg/libgit2/src/util.c

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• Hash : 2c4b7707
  Author :
  Date : 2008-12-31T16:06:48
  

  Add git__fmt as an easier to use snprintf Checking the return value of snprintf is a pain, as it must be >= 0 and < sizeof(buffer). git__fmt is a simple wrapper to perform these checks. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

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• src/util.c

• #define GIT__NO_HIDE_MALLOC
  #include "common.h"
  #include <stdarg.h>
  #include <stdio.h>
  
  void *git__malloc(size_t n)
  {
  	void *r = malloc(n);
  	if (!r)
  		return git_ptr_error(GIT_ENOMEM);
  	return r;
  }
  
  void *git__calloc(size_t a, size_t b)
  {
  	void *r = calloc(a, b);
  	if (!r)
  		return git_ptr_error(GIT_ENOMEM);
  	return r;
  }
  
  char *git__strdup(const char *s)
  {
  	char *r = strdup(s);
  	if (!s)
  		return git_ptr_error(GIT_ENOMEM);
  	return r;
  }
  
  int git__fmt(char *buf, size_t buf_sz, const char *fmt, ...)
  {
  	va_list va;
  	int r;
  
  	va_start(va, fmt);
  	r = vsnprintf(buf, buf_sz, fmt, va);
  	va_end(va);
  	if (r < 0 || r >= buf_sz)
  		return GIT_ERROR;
  	return r;
  }
  
  int git__prefixcmp(const char *str, const char *prefix)
  {
  	for (;;) {
  		char p = *(prefix++), s;
  		if (!p)
  			return 0;
  		if ((s = *(str++)) != p)
  			return s - p;
  	}
  }
  
  int git__suffixcmp(const char *str, const char *suffix)
  {
  	size_t a = strlen(str);
  	size_t b = strlen(suffix);
  	if (a < b)
  		return -1;
  	return strcmp(str + (a - b), suffix);
  }
  

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