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Diffstat (limited to 'epan/g_ascii_strcasecmp.c')
-rw-r--r-- | epan/g_ascii_strcasecmp.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/epan/g_ascii_strcasecmp.c b/epan/g_ascii_strcasecmp.c new file mode 100644 index 0000000000..1607a22d5c --- /dev/null +++ b/epan/g_ascii_strcasecmp.c @@ -0,0 +1,120 @@ +/* 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 "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; +} + |