Add gb2312 encoding.

3 files changed, 120 insertions, 1 deletions

diff --git a/lib/libc/locale/Makefile.inc b/lib/libc/locale/Makefile.inc
index 9003321..54e9e23 100644
--- a/lib/libc/locale/Makefile.inc
+++ b/lib/libc/locale/Makefile.inc
@@ -5,7 +5,7 @@
 .PATH: ${.CURDIR}/${MACHINE_ARCH}/locale ${.CURDIR}/locale
 
 SRCS+=	big5.c btowc.c collate.c collcmp.c euc.c fix_grouping.c frune.c \
-	gb18030.c gbk.c isctype.c iswctype.c \
+	gb18030.c gb2312.c gbk.c isctype.c iswctype.c \
 	ldpart.c lmessages.c lmonetary.c lnumeric.c localeconv.c mblen.c \
 	mbrlen.c \
 	mbrtowc.c mbrune.c mbsinit.c mbsrtowcs.c mbtowc.c mbstowcs.c \
diff --git a/lib/libc/locale/gb2312.c b/lib/libc/locale/gb2312.c
new file mode 100644
index 0000000..0b82eca
--- /dev/null
+++ b/lib/libc/locale/gb2312.c
@@ -0,0 +1,116 @@
+/*-
+ * Copyright (c) 2003 David Xu <davidxu@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <runetype.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+extern size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict,
+    size_t, mbstate_t * __restrict);
+extern size_t (*__wcrtomb)(char * __restrict, wchar_t, mbstate_t * __restrict);
+
+int	_GB2312_init(_RuneLocale *);
+size_t	_GB2312_mbrtowc(wchar_t * __restrict, const char * __restrict, size_t,
+	    mbstate_t * __restrict);
+size_t	_GB2312_wcrtomb(char * __restrict, wchar_t, mbstate_t * __restrict);
+
+int
+_GB2312_init(_RuneLocale *rl)
+{
+
+	_CurrentRuneLocale = rl;
+	__mbrtowc = _GB2312_mbrtowc;
+	__wcrtomb = _GB2312_wcrtomb;
+	__mb_cur_max = 2;
+	return (0);
+}
+
+static inline int
+_GB2312_check(const char *str, size_t n)
+{
+	const u_char *s = (const u_char *)str;
+
+	if (n == 0)
+		/* Incomplete multibyte sequence */
+		return (-2);
+	if (s[0] >= 0xa1 && s[0] <= 0xfe) {
+		if (n < 2)
+			/* Incomplete multibyte sequence */
+			return (-2);
+		if (s[1] < 0xa1 || s[1] > 0xfe)
+			/* Invalid multibyte sequence */
+			return (-1);
+		return (2);
+	} else if (s[0] & 0x80) {
+		/* Invalid multibyte sequence */
+		return (-1);
+	} 
+	return (1);
+}
+
+size_t
+_GB2312_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
+    mbstate_t * __restrict ps __unused)
+{
+	wchar_t wc;
+	int i, len;
+
+	if (s == NULL)
+		/* Reset to initial shift state (no-op) */
+		return (0);
+	if ((len = _GB2312_check(s, n)) < 0)
+		return ((size_t)len);
+	wc = 0;
+	i = len;
+	while (i-- > 0)
+		wc = (wc << 8) | (unsigned char)*s++;
+	if (pwc != NULL)
+		*pwc = wc;
+	return (wc == L'\0' ? 0 : len);
+}
+
+size_t
+_GB2312_wcrtomb(char * __restrict s, wchar_t wc,
+    mbstate_t * __restrict ps __unused)
+{
+
+	if (s == NULL)
+		/* Reset to initial shift state (no-op) */
+		return (1);
+	if (wc & 0x8000) {
+		*s++ = (wc >> 8) & 0xff;
+		*s = wc & 0xff;
+		return (2);
+	}
+	*s = wc & 0xff;
+	return (1);
+}
diff --git a/lib/libc/locale/setrunelocale.c b/lib/libc/locale/setrunelocale.c
index 0037f9c..43b759a 100644
--- a/lib/libc/locale/setrunelocale.c
+++ b/lib/libc/locale/setrunelocale.c
@@ -56,6 +56,7 @@ extern int		_UTF2_init(_RuneLocale *);
 extern int		_UTF8_init(_RuneLocale *);
 extern int		_EUC_init(_RuneLocale *);
 extern int		_GB18030_init(_RuneLocale *);
+extern int		_GB2312_init(_RuneLocale *);
 extern int		_GBK_init(_RuneLocale *);
 extern int		_BIG5_init(_RuneLocale *);
 extern int		_MSKanji_init(_RuneLocale *);
@@ -157,6 +158,8 @@ __setrunelocale(const char *encoding)
 		ret = _EUC_init(rl);
  	else if (strcmp(rl->encoding, "GB18030") == 0)
  		ret = _GB18030_init(rl);
+	else if (strcmp(rl->encoding, "GB2312") == 0)
+		ret = _GB2312_init(rl);
 	else if (strcmp(rl->encoding, "GBK") == 0)
 		ret = _GBK_init(rl);
 	else if (strcmp(rl->encoding, "BIG5") == 0)