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/*
* string.c
*
* Miscellaneous macro's and functions.
*
* Copyright 1999-2008 Gentoo Foundation
* Copyright 2004-2007 Martin Schlemmer <azarah@nosferatu.za.org>
* Licensed under the GPL-2
*/
#include "headers.h"
#include "rcscripts/rcutil.h"
char *
rc_memrepchr (char **str, char old, char new, size_t size)
{
char *str_p;
if (!check_arg_strv (str))
return NULL;
str_p = memchr (*str, old, size);
while (NULL != str_p)
{
str_p[0] = new;
str_p = memchr (&str_p[1], old, size - (str_p - *str) - 1);
}
return *str;
}
char *
rc_strcatpaths (const char *pathname1, const char *pathname2)
{
char *new_path = NULL;
int lenght;
if ((!check_arg_str (pathname1)) || (!check_arg_str (pathname2)))
return 0;
/* Lenght of pathname1 + lenght of pathname2 + '/' if needed */
lenght = strlen (pathname1) + strlen (pathname2) + 2;
/* lenght + '\0' */
new_path = xmalloc (lenght);
if (NULL == new_path)
return NULL;
snprintf (new_path, lenght, "%s%s%s", pathname1,
(pathname1[strlen (pathname1) - 1] != '/') ? "/" : "",
pathname2);
return new_path;
}
char *
rc_strndup (const char *str, size_t size)
{
char *new_str = NULL;
size_t len;
/* We cannot check if its a valid string here, as it might
* not be '\0' terminated ... */
if (!check_arg_ptr (str))
return NULL;
/* Check lenght of str without breaching the size limit */
for (len = 0; (len < size) && ('\0' != str[len]); len++);
new_str = xmalloc (len + 1);
if (NULL == new_str)
return NULL;
/* Make sure our string is NULL terminated */
new_str[len] = '\0';
return (char *) memcpy (new_str, str, len);
}
char *
rc_basename (const char *path)
{
char *new_path = NULL;
if (!check_arg_str (path))
return NULL;
/* Copied from glibc */
new_path = strrchr (path, '/');
return new_path ? new_path + 1 : (char *) path;
}
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