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/*
* Copyright 2010-2013 Various Authors
* Copyright 2010 Johannes Weißl
*
* based on gunicollate.c from glib
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "u_collate.h"
#include "uchar.h"
#include "xmalloc.h"
#include "ui_curses.h" /* using_utf8, charset */
#include "convert.h"
#include <stdlib.h>
#include <string.h>
#include <limits.h>
int u_strcoll(const char *str1, const char *str2)
{
int result;
if (using_utf8) {
result = strcoll(str1, str2);
} else {
char *str1_locale = NULL, *str2_locale = NULL;
convert(str1, -1, &str1_locale, -1, charset, "UTF-8");
convert(str2, -1, &str2_locale, -1, charset, "UTF-8");
if (str1_locale && str2_locale)
result = strcoll(str1_locale, str2_locale);
else
result = strcmp(str1, str2);
if (str2_locale)
free(str2_locale);
if (str1_locale)
free(str1_locale);
}
return result;
}
int u_strcasecoll(const char *str1, const char *str2)
{
char *cf_a, *cf_b;
int res;
cf_a = u_casefold(str1);
cf_b = u_casefold(str2);
res = u_strcoll(cf_a, cf_b);
free(cf_b);
free(cf_a);
return res;
}
int u_strcasecoll0(const char *str1, const char *str2)
{
if (!str1)
return str2 ? -1 : 0;
if (!str2)
return 1;
return u_strcasecoll(str1, str2);
}
char *u_strcoll_key(const char *str)
{
char *result = NULL;
if (using_utf8) {
size_t xfrm_len = strxfrm(NULL, str, 0);
if ((ssize_t) xfrm_len >= 0 && xfrm_len < INT_MAX - 2) {
result = xnew(char, xfrm_len + 1);
strxfrm(result, str, xfrm_len + 1);
}
}
if (!result) {
char *str_locale = NULL;
convert(str, -1, &str_locale, -1, charset, "UTF-8");
if (str_locale) {
size_t xfrm_len = strxfrm(NULL, str_locale, 0);
if ((ssize_t) xfrm_len >= 0 && xfrm_len < INT_MAX - 2) {
result = xnew(char, xfrm_len + 2);
result[0] = 'A';
strxfrm(result + 1, str_locale, xfrm_len + 1);
}
free(str_locale);
}
}
if (!result) {
size_t xfrm_len = strlen(str);
result = xmalloc(xfrm_len + 2);
result[0] = 'B';
memcpy(result + 1, str, xfrm_len);
result[xfrm_len+1] = '\0';
}
return result;
}
char *u_strcasecoll_key(const char *str)
{
char *key, *cf_str;
cf_str = u_casefold(str);
key = u_strcoll_key(cf_str);
free(cf_str);
return key;
}
char *u_strcasecoll_key0(const char *str)
{
return str ? u_strcasecoll_key(str) : NULL;
}
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