lcUtil.c revision 61b2299d 
1/* $Xorg: lcUtil.c,v 1.3 2000/08/17 19:45:20 cpqbld Exp $ */
2/*
3 * Copyright 1992, 1993 by TOSHIBA Corp.
4 *
5 * Permission to use, copy, modify, and distribute this software and its
6 * documentation for any purpose and without fee is hereby granted, provided
7 * that the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of TOSHIBA not be used in advertising
10 * or publicity pertaining to distribution of the software without specific,
11 * written prior permission. TOSHIBA make no representations about the
12 * suitability of this software for any purpose.  It is provided "as is"
13 * without express or implied warranty.
14 *
15 * TOSHIBA DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
16 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
17 * TOSHIBA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
18 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
19 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
20 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
21 * SOFTWARE.
22 *
23 * Author: Katsuhisa Yano	TOSHIBA Corp.
24 *			   	mopi@osa.ilab.toshiba.co.jp
25 * Bug fixes: Bruno Haible	XFree86 Inc.
26 */
27/* $XFree86: xc/lib/X11/lcUtil.c,v 1.3 2000/11/29 17:40:24 dawes Exp $ */
28
29#ifdef HAVE_CONFIG_H
30#include <config.h>
31#endif
32#include <X11/Xlib.h>
33#include "XlcPublic.h"
34
35/* Don't use <ctype.h> here because it is locale dependent. */
36
37#define set_toupper(ch) \
38  if (ch >= 'a' && ch <= 'z') \
39    ch = ch - 'a' + 'A';
40
41/* Compares two ISO 8859-1 strings, ignoring case of ASCII letters.
42   Like strcasecmp in an ASCII locale. */
43int
44_XlcCompareISOLatin1(
45    const char *str1,
46    const char *str2)
47{
48    unsigned char ch1, ch2;
49
50    for ( ; ; str1++, str2++) {
51	ch1 = *str1;
52	ch2 = *str2;
53	if (ch1 == '\0' || ch2 == '\0')
54	    break;
55	set_toupper(ch1);
56	set_toupper(ch2);
57	if (ch1 != ch2)
58	    break;
59    }
60
61    return ch1 - ch2;
62}
63
64/* Compares two ISO 8859-1 strings, at most len bytes of each, ignoring
65   case of ASCII letters. Like strncasecmp in an ASCII locale. */
66int
67_XlcNCompareISOLatin1(
68    const char *str1,
69    const char *str2,
70    int len)
71{
72    unsigned char ch1, ch2;
73
74    for ( ; ; str1++, str2++, len--) {
75	if (len == 0)
76	    return 0;
77	ch1 = *str1;
78	ch2 = *str2;
79	if (ch1 == '\0' || ch2 == '\0')
80	    break;
81	set_toupper(ch1);
82	set_toupper(ch2);
83	if (ch1 != ch2)
84	    break;
85    }
86
87    return ch1 - ch2;
88}
89