envz_strip.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 <argz.h>
#include <envz.h>
void
_DEFUN (envz_strip, (envz, envz_len),
char **envz _AND
size_t *envz_len)
{
char *entry = 0;
int len = 0;
int null_found = 0;
while((entry = argz_next(*envz, *envz_len, entry)))
{
if(!strchr(entry, '='))
{
null_found = 1;
len = strlen(entry) + 1;
/* Make sure this is not the last entry in envz. If it is, it
will be chopped off by the realloc anyway.*/
if(*envz + *envz_len != entry + len - 1)
{
memmove(entry, entry + len, *envz + *envz_len - entry - len);
}
*envz_len -= len;
}
}
if(null_found)
{
*envz = (char *)realloc(*envz, *envz_len);
}
}
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