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/*
librc-strlist.h
String list functions for using char ** arrays
Copyright 2007 Gentoo Foundation
Based on a previous implementation by Martin Schlemmer
Released under the GPLv2
*/
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "rc.h"
#include "rc-misc.h"
char **rc_strlist_add (char **list, const char *item)
{
char **newlist;
int i = 0;
if (! item)
return (list);
while (list && list[i])
i++;
newlist = rc_xrealloc (list, sizeof (char *) * (i + 2));
newlist[i] = rc_xstrdup (item);
newlist[i + 1] = NULL;
return (newlist);
}
static char **_rc_strlist_addsort (char **list, const char *item,
int (*sortfunc) (const char *s1,
const char *s2))
{
char **newlist;
int i = 0;
char *tmp1;
char *tmp2;
if (! item)
return (list);
while (list && list[i])
i++;
newlist = rc_xrealloc (list, sizeof (char *) * (i + 2));
if (! i)
newlist[i] = NULL;
newlist[i + 1] = NULL;
i = 0;
while (newlist[i] && sortfunc (newlist[i], item) < 0)
i++;
tmp1 = newlist[i];
newlist[i] = rc_xstrdup (item);
do
{
i++;
tmp2 = newlist[i];
newlist[i] = tmp1;
tmp1 = tmp2;
} while (tmp1);
return (newlist);
}
char **rc_strlist_addsort (char **list, const char *item)
{
return (_rc_strlist_addsort (list, item, strcoll));
}
char **rc_strlist_addsortc (char **list, const char *item)
{
return (_rc_strlist_addsort (list, item, strcmp));
}
char **rc_strlist_delete (char **list, const char *item)
{
int i = 0;
if (!list || ! item)
return (list);
while (list[i])
if (! strcmp (list[i], item))
{
free (list[i]);
do
{
list[i] = list[i + 1];
i++;
} while (list[i]);
}
return (list);
}
void rc_strlist_reverse (char **list)
{
char *item;
int i = 0;
int j = 0;
if (! list)
return;
while (list[j])
j++;
j--;
while (i < j && list[i] && list[j])
{
item = list[i];
list[i] = list[j];
list[j] = item;
i++;
j--;
}
}
void rc_strlist_free (char **list)
{
int i = 0;
if (! list)
return;
while (list[i])
{
free (list[i]);
list[i++] = NULL;
}
free (list);
}
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