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-rw-r--r--wcsmbs/mbscmp.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/wcsmbs/mbscmp.c b/wcsmbs/mbscmp.c
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+++ b/wcsmbs/mbscmp.c
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+/* Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <mbstr.h>
+#include <stdlib.h>
+
+#define __need_wchar_t
+/* FIXME: should be defined in stddef.h.
+!!! #define __need_uwchar_t */
+typedef unsigned int uwchar_t;
+#include <stddef.h>
+
+
+/* Compare MBS1 and MBS2. */
+int
+mbscmp (mbs1, mbs2)
+ const char *mbs1;
+ const char *mbs2;
+{
+ int len1 = 0;
+ int len2 = 0;
+ uwchar_t c1;
+ uwchar_t c2;
+
+ /* Reset multibyte characters to their initial state. */
+ (void) mblen ((char *) NULL, 0);
+
+ do
+ {
+ len1 = mbtowc ((wchar_t *) &c1, mbs1, MB_CUR_MAX);
+ len2 = mbtowc ((wchar_t *) &c2, mbs2, MB_CUR_MAX);
+
+ if (len1 == 0)
+ return len2 == 0 ? 0 : -1;
+ if (len2 == 0)
+ return 1;
+ if (len1 < 0 || len2 < 0)
+ /* FIXME: an illegal character appears. What to do? */
+ return c1 - c2;
+
+ mbs1 += len1;
+ mbs2 += len2;
+ }
+ while (c1 == c2);
+
+ return c1 - c2;
+}
+