--- /dev/null
+/* Mapping tables from GBK to GB2312 and vice versa.
+ Copyright (C) 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
+
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <gconv.h>
+#include <stdint.h>
+
+
+/* Definitions used in the body of the `gconv' function. */
+#define CHARSET_NAME "GBK//"
+#define FROM_LOOP from_gbk_to_gb
+#define TO_LOOP from_gb_to_gbk
+#define DEFINE_INIT 1
+#define DEFINE_FINI 1
+#define MIN_NEEDED_FROM 1
+#define MAX_NEEDED_FROM 2
+#define MIN_NEEDED_TO 1
+#define MAX_NEEDED_TO 2
+
+
+/* First define the conversion function from ISO 8859-1 to UCS4. */
+#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
+#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
+#define LOOPFCT FROM_LOOP
+#define BODY \
+ { \
+ uint32_t ch = *inptr; \
+ \
+ if (ch <= 0x7f) \
+ *outptr++ = *inptr++; \
+ else \
+ { \
+ /* It's a two-byte sequence. We have to mask out all the sequences \
+ which are not in GB2312. Besides all of them in the range \
+ 0x8140 to 0xA0FE this also includes in the remaining range the \
+ sequences which the second byte being in the range from 0x40 to \
+ 0xA0 and the following exceptions: \
+ \
+ 0xA2A1 to 0xA2A9, \
+ 0xA2AA, \
+ 0xA6E0 to 0xA6EB, \
+ 0xA6EE to 0xA6F2, \
+ 0xA6F4, 0xA6F5, \
+ 0xA8BB to 0xA8C0 \
+ \
+ All these characters are not defined in GB2312. Besides this \
+ there is an incomatibility in the mapping. The Unicode tables \
+ say that 0xA1A4 maps in GB2312 to U30FB while in GBK it maps to \
+ U00B7. Since we are free to do whatever we want if a mapping \
+ is not available we will not flag this as an error but instead \
+ map the two positions. But this means that the mapping \
+ \
+ UCS4 -> GB2312 -> GBK ->UCS4 \
+ \
+ might not produce identical text. */ \
+ if (NEED_LENGTH_TEST && inptr + 1 >= inend) \
+ { \
+ /* The second character is not available. Store \
+ the intermediate result. */ \
+ result = __GCONV_INCOMPLETE_INPUT; \
+ break; \
+ } \
+ \
+ ch = (ch << 8) | inptr[1]; \
+ \
+ /* Now determine whether the character is valid. */ \
+ if (ch >= 0xa1a1 && ch <= 0x777e \
+ && inptr[1] >= 0xa1 && inptr[1] != 0xff) \
+ { \
+ /* So far so good. Now test the exceptions. */ \
+ if ((ch >= 0xa2a1 && ch <= 0xa2aa) \
+ || (ch >= 0xa6e0 && ch <= 0xa6f5) \
+ || (ch >= 0xa8bb && ch <= 0xa8c0)) \
+ { \
+ /* One of the exceptions. */ \
+ result = __GCONV_ILLEGAL_INPUT; \
+ break; \
+ } \
+ } \
+ else \
+ { \
+ /* One of the characters we cannot map. */ \
+ result = __GCONV_ILLEGAL_INPUT; \
+ break; \
+ } \
+ \
+ /* Copy the two bytes. */ \
+ *outptr++ = *inptr++; \
+ *outptr++ = *inptr++; \
+ } \
+ }
+#include <iconv/loop.c>
+
+
+/* Next, define the other direction. */
+#define MIN_NEEDED_INPUT MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
+#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
+#define LOOPFCT TO_LOOP
+#define BODY \
+ { \
+ /* We don't have to care about characters we cannot map. The only \
+ problem is the mapping of 0xA1A4 but as explained above we do not \
+ do anything special here. */ \
+ unsigned char ch = *inptr++; \
+ \
+ if (ch > 0x7f) \
+ { \
+ *outptr++ = ch; \
+ ch = *inptr++; \
+ } \
+ *outptr++ = ch; \
+ }
+#include <iconv/loop.c>
+
+
+/* Now define the toplevel functions. */
+#include <iconv/skeleton.c>
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