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-rw-r--r--iconvdata/ibm939.c270
1 files changed, 270 insertions, 0 deletions
diff --git a/iconvdata/ibm939.c b/iconvdata/ibm939.c
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+++ b/iconvdata/ibm939.c
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+/* Conversion to and from IBM939.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Masahide Washizawa <washi@yamato.ibm.co.jp>, 2000.
+
+ 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 <dlfcn.h>
+#include <stdint.h>
+#include <wchar.h>
+#include <byteswap.h>
+#include "ibm939.h"
+
+/* The shift sequences for this charset (it does not use ESC). */
+#define SI 0x0F /* Shift In, host code to turn DBCS off. */
+#define SO 0x0E /* Shift Out, host code to turn DBCS on. */
+
+/* Definitions used in the body of the `gconv' function. */
+#define CHARSET_NAME "IBM939//"
+#define FROM_LOOP from_ibm939
+#define TO_LOOP to_ibm939
+
+/* Definitions of initialization and destructor function. */
+#define DEFINE_INIT 1
+#define DEFINE_FINI 1
+
+#define MIN_NEEDED_FROM 1
+#define MIN_NEEDED_TO 4
+
+/* Current codeset type. */
+enum
+{
+ init = 0,
+ sb,
+ db
+};
+
+/* First, define the conversion function from IBM-939 to UCS4. */
+#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
+#define INIT_PARAMS int curcs = init;
+#define LOOPFCT FROM_LOOP
+#define BODY \
+ { \
+ uint32_t ch = *inptr; \
+ uint32_t res; \
+ const struct gap *rp1 = __ibm939sb_to_ucs4_idx; \
+ const struct gap *rp2 = __ibm939db_to_ucs4_idx; \
+ \
+ if (__builtin_expect (ch, 0) == SO) \
+ { \
+ if (__builtin_expect (inptr + 1 >= inend, 0)) \
+ { \
+ result = __GCONV_INCOMPLETE_INPUT; \
+ break; \
+ } \
+ \
+ /* Shift OUT, change to DBCS converter. */ \
+ if (curcs == db) \
+ { \
+ result = __GCONV_ILLEGAL_INPUT; \
+ break; \
+ } \
+ curcs = db; \
+ ++inptr; \
+ ch = *inptr; \
+ } \
+ else if (__builtin_expect (ch, 0) == SI) \
+ { \
+ if (__builtin_expect (inptr + 1 >= inend, 0)) \
+ { \
+ result = __GCONV_INCOMPLETE_INPUT; \
+ break; \
+ } \
+ \
+ /* Shift IN, change to SBCS converter. */ \
+ if (curcs == sb) \
+ { \
+ result = __GCONV_ILLEGAL_INPUT; \
+ break; \
+ } \
+ curcs = sb; \
+ ++inptr; \
+ ch = *inptr; \
+ } \
+ \
+ if (curcs == sb || curcs == init) \
+ { \
+ /* Use the IBM939 table for single byte. */ \
+ while (ch > rp1->end) \
+ ++rp1; \
+ \
+ if (__builtin_expect (rp1 == NULL, 0) \
+ || __builtin_expect (ch < rp1->start, 0) \
+ || (res = __ibm939sb_to_ucs4[ch + rp1->idx], \
+ __builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
+ { \
+ /* This is an illegal character. */ \
+ if (! ignore_errors_p ()) \
+ { \
+ result = __GCONV_ILLEGAL_INPUT; \
+ break; \
+ } \
+ ++*irreversible; \
+ ++inptr; \
+ continue; \
+ } \
+ else \
+ { \
+ if (res == 0xa5) \
+ res = 0x5c; \
+ put32 (outptr, res); \
+ outptr += 4; \
+ ++inptr; \
+ } \
+ } \
+ else if (curcs == db) \
+ { \
+ /* Use the IBM939 table for double byte. */ \
+ if (__builtin_expect (inptr + 1 >= inend, 0)) \
+ { \
+ /* The second character is not available. Store the \
+ intermediate result. */ \
+ result = __GCONV_INCOMPLETE_INPUT; \
+ break; \
+ } \
+ \
+ ch = (ch * 0x100) + inptr[1]; \
+ while (ch > rp2->end) \
+ ++rp2; \
+ \
+ if (__builtin_expect (rp2 == NULL, 0) \
+ || __builtin_expect (ch < rp2->start, 0) \
+ || (res = __ibm939db_to_ucs4[ch + rp2->idx], \
+ __builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
+ { \
+ /* This is an illegal character. */ \
+ if (! ignore_errors_p ()) \
+ { \
+ result = __GCONV_ILLEGAL_INPUT; \
+ break; \
+ } \
+ ++*irreversible; \
+ inptr += 2; \
+ continue; \
+ } \
+ else \
+ { \
+ put32 (outptr, res); \
+ outptr += 4; \
+ inptr += 2; \
+ } \
+ } \
+ }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+/* Next, define the other direction */
+#define MIN_NEEDED_INPUT MIN_NEEDED_TO
+#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
+#define INIT_PARAMS int curcs = init;
+#define LOOPFCT TO_LOOP
+#define BODY \
+ { \
+ uint32_t ch = get32 (inptr); \
+ const struct gap *rp1 = __ucs4_to_ibm939sb_idx; \
+ const struct gap *rp2 = __ucs4_to_ibm939db_idx; \
+ const char *cp; \
+ \
+ if (__builtin_expect (ch, 0) >= 0xffff) \
+ { \
+ rp1 = NULL; \
+ rp2 = NULL; \
+ } \
+ else \
+ while (ch > rp1->end) \
+ ++rp1; \
+ \
+ /* Use the UCS4 table for single byte. */ \
+ if (__builtin_expect (rp1 == NULL, 0) \
+ || __builtin_expect (ch < rp1->start, 0) \
+ || (cp = __ucs4_to_ibm939sb[ch + rp1->idx], \
+ __builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \
+ { \
+ /* Use the UCS4 table for double byte. */ \
+ while (ch > rp2->end) \
+ ++rp2; \
+ \
+ if (__builtin_expect (rp2 == NULL, 0) \
+ || __builtin_expect (ch < rp2->start, 0) \
+ || (cp = __ucs4_to_ibm939db[ch + rp2->idx], \
+ __builtin_expect (cp[0], L'\1')==L'\0' && ch != '\0')) \
+ { \
+ /* This is an illegal character. */ \
+ if (! ignore_errors_p ()) \
+ { \
+ result = __GCONV_ILLEGAL_INPUT; \
+ break; \
+ } \
+ ++*irreversible; \
+ } \
+ else \
+ { \
+ if (curcs == init || curcs == sb) \
+ { \
+ if (__builtin_expect (outptr+1 > outend, 0)) \
+ { \
+ result = __GCONV_FULL_OUTPUT; \
+ break; \
+ } \
+ *outptr++ = SO; \
+ curcs = db; \
+ } \
+ \
+ if (__builtin_expect (outptr + 2 > outend, 0)) \
+ { \
+ result = __GCONV_FULL_OUTPUT; \
+ break; \
+ } \
+ *outptr++ = cp[0]; \
+ *outptr++ = cp[1]; \
+ } \
+ } \
+ else \
+ { \
+ if (curcs == db) \
+ { \
+ if (__builtin_expect (outptr + 1 > outend, 0)) \
+ { \
+ result = __GCONV_FULL_OUTPUT; \
+ break; \
+ } \
+ *outptr++ = SI; \
+ } \
+ \
+ if (__builtin_expect (outptr + 1 > outend, 0)) \
+ { \
+ result = __GCONV_FULL_OUTPUT; \
+ break; \
+ } \
+ if (ch == 0x7e) \
+ *outptr++ = 0xa0; \
+ else if (ch == 0x5c) \
+ *outptr++ = 0xb2; \
+ else \
+ *outptr++ = cp[0]; \
+ curcs = sb; \
+ } \
+ \
+ /* Now that we wrote the output increment the input pointer. */ \
+ inptr += 4; \
+ }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+
+/* Now define the toplevel functions. */
+#include <iconv/skeleton.c>
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