envz_get.c from Gdb at Krugle
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/* Copyright (C) 2002 by Red Hat, Incorporated. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software
* is freely granted, provided that this notice is preserved.
*/
#include <errno.h>
#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <envz.h>
#include "buf_findstr.h"
char *
_DEFUN (envz_get, (envz, envz_len, name),
const char *envz _AND
size_t envz_len _AND
const char *name)
{
char *buf_ptr = (char *)envz;
size_t buf_len = envz_len;
while(buf_len)
{
if (_buf_findstr(name, &buf_ptr, &buf_len))
{
if (*buf_ptr == '=')
{
buf_ptr++;
return (char *)buf_ptr;
}
else
{
if (*buf_ptr == '\0')
/* NULL entry. */
return NULL;
}
}
}
/* No matching entries found. */
return NULL;
}
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