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/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
/*
* $Id$
*
* "g_ascii_strcasecmp()" and "g_ascii_strncasecmp()" extracted from
* GLib 2.4.8, for use with GLibs that don't have it (e.g., GLib 1.2[.x]).
*/
#include <glib.h>
#include "g_ascii_strcasecmp.h"
#define ISUPPER(c) ((c) >= 'A' && (c) <= 'Z')
#define ISLOWER(c) ((c) >= 'a' && (c) <= 'z')
#define TOUPPER(c) (ISLOWER (c) ? (c) - 'a' + 'A' : (c))
#define TOLOWER(c) (ISUPPER (c) ? (c) - 'A' + 'a' : (c))
/**
* g_ascii_strcasecmp:
* @s1: string to compare with @s2.
* @s2: string to compare with @s1.
*
* Compare two strings, ignoring the case of ASCII characters.
*
* Unlike the BSD strcasecmp() function, this only recognizes standard
* ASCII letters and ignores the locale, treating all non-ASCII
* characters as if they are not letters.
*
* Return value: an integer less than, equal to, or greater than
* zero if @s1 is found, respectively, to be less than,
* to match, or to be greater than @s2.
**/
gint
g_ascii_strcasecmp (const gchar *s1,
const gchar *s2)
{
gint c1, c2;
g_return_val_if_fail (s1 != NULL, 0);
g_return_val_if_fail (s2 != NULL, 0);
while (*s1 && *s2)
{
c1 = (gint)(guchar) TOLOWER (*s1);
c2 = (gint)(guchar) TOLOWER (*s2);
if (c1 != c2)
return (c1 - c2);
s1++; s2++;
}
return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
}
/**
* g_ascii_strncasecmp:
* @s1: string to compare with @s2.
* @s2: string to compare with @s1.
* @n: number of characters to compare.
*
* Compare @s1 and @s2, ignoring the case of ASCII characters and any
* characters after the first @n in each string.
*
* Unlike the BSD strcasecmp() function, this only recognizes standard
* ASCII letters and ignores the locale, treating all non-ASCII
* characters as if they are not letters.
*
* Return value: an integer less than, equal to, or greater than zero
* if the first @n bytes of @s1 is found, respectively,
* to be less than, to match, or to be greater than the
* first @n bytes of @s2.
**/
gint
g_ascii_strncasecmp (const gchar *s1,
const gchar *s2,
gsize n)
{
gint c1, c2;
g_return_val_if_fail (s1 != NULL, 0);
g_return_val_if_fail (s2 != NULL, 0);
while (n && *s1 && *s2)
{
n -= 1;
c1 = (gint)(guchar) TOLOWER (*s1);
c2 = (gint)(guchar) TOLOWER (*s2);
if (c1 != c2)
return (c1 - c2);
s1++; s2++;
}
if (n)
return (((gint) (guchar) *s1) - ((gint) (guchar) *s2));
else
return 0;
}
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