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1998-12-08 Andreas Jaeger <aj@arthur.rhein-neckar.de> * posix/regex.c: Get regex.h from system path, not from local directory. * posix/regex.h: Move internal interfaces to ... * include/regex.h: ...here. * posix/unistd.h: Move internal interfaces to ... * include/unistd.h: ...here. * math/math.h: Move internal interfaces to ... * include/math.h: ...here. * posix/glob.h: Move internal interfaces to ... * include/glob.h: ...here. * string/string.h: Move internal interfaces to ... * include/string.h: ...here. * time/sys/time.h: Move internal interfaces to ... * include/sys/time.h: ...here. * resolv/netdb.h: Move internal interfaces to ... * include/netdb.h: ...here. 1998-12-08 Ulrich Drepper <drepper@cygnus.com> * iconvdata/eucjp.c: Handle Yen in overscore conversion from ISO 10646 correctly. * iconvdata/iso-2022-jp.c: Handle Kana in 2022-JP2 correctly Fix various bugs in conversion routine. * iconvdata/jis0201.h: Correct variable name. * iconvdata/jis0208.c: Correct script to generate tables and regenerate them. * iconvdata/jis0208.h: Likewise. * iconvdata/jis0212.c: Likewise. * iconvdata/sjis.c: Likewise. Patch by HANATAKA Shinya <hanataka@abyss.rim.or.jp>.
751 lines
24 KiB
C
751 lines
24 KiB
C
/* Conversion module for ISO-2022-JP.
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <gconv.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "jis0201.h"
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#include "jis0208.h"
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#include "jis0212.h"
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#include "gb2312.h"
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#include "ksc5601.h"
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struct gap
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{
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uint16_t start;
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uint16_t end;
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int32_t idx;
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};
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#include "iso8859-7jp.h"
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/* This makes obvious what everybody knows: 0x1b is the Esc character. */
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#define ESC 0x1b
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/* We provide our own initialization and destructor function. */
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#define DEFINE_INIT 0
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#define DEFINE_FINI 0
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/* Definitions used in the body of the `gconv' function. */
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#define FROM_LOOP from_iso2022jp_loop
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#define TO_LOOP to_iso2022jp_loop
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#define MIN_NEEDED_FROM 1
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#define MAX_NEEDED_FROM 4
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#define MIN_NEEDED_TO 4
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#define MAX_NEEDED_TO 4
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#define FROM_DIRECTION (dir == from_iso2022jp)
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#define PREPARE_LOOP \
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enum direction dir = ((struct iso2022jp_data *) step->data)->dir; \
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enum variant var = ((struct iso2022jp_data *) step->data)->var; \
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int save_set; \
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int *setp = &data->statep->count;
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#define EXTRA_LOOP_ARGS , var, setp
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/* Direction of the transformation. */
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enum direction
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{
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illegal_dir,
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to_iso2022jp,
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from_iso2022jp
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};
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/* We handle ISO-2022-jp and ISO-2022-JP-2 here. */
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enum variant
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{
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illegal_var,
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iso2022jp,
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iso2022jp2
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};
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struct iso2022jp_data
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{
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enum direction dir;
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enum variant var;
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};
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/* The COUNT element of the state keeps track of the currently selected
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character set. The possible values are: */
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enum
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{
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ASCII_set = 0,
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JISX0208_1978_set,
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JISX0208_1983_set,
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JISX0201_Roman_set,
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JISX0201_Kana_set,
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GB2312_set,
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KSC5601_set,
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JISX0212_set,
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ISO88591_set,
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ISO88597_set
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};
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int
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gconv_init (struct gconv_step *step)
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{
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/* Determine which direction. */
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struct iso2022jp_data *new_data;
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enum direction dir = illegal_dir;
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enum variant var = illegal_var;
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int result;
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if (__strcasecmp (step->from_name, "ISO-2022-JP//") == 0)
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{
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dir = from_iso2022jp;
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var = iso2022jp;
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}
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else if (__strcasecmp (step->to_name, "ISO-2022-JP//") == 0)
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{
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dir = to_iso2022jp;
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var = iso2022jp;
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}
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else if (__strcasecmp (step->from_name, "ISO-2022-JP-2//") == 0)
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{
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dir = from_iso2022jp;
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var = iso2022jp2;
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}
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else if (__strcasecmp (step->to_name, "ISO-2022-JP-2//") == 0)
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{
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dir = to_iso2022jp;
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var = iso2022jp2;
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}
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result = GCONV_NOCONV;
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if (dir != illegal_dir
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&& ((new_data
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= (struct iso2022jp_data *) malloc (sizeof (struct iso2022jp_data)))
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!= NULL))
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{
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new_data->dir = dir;
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new_data->var = var;
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step->data = new_data;
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if (dir == from_iso2022jp)
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{
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step->min_needed_from = MIN_NEEDED_FROM;
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step->max_needed_from = MAX_NEEDED_FROM;
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step->min_needed_to = MIN_NEEDED_TO;
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step->max_needed_to = MIN_NEEDED_TO;
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}
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else
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{
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step->min_needed_from = MIN_NEEDED_TO;
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step->max_needed_from = MAX_NEEDED_TO;
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step->min_needed_to = MIN_NEEDED_FROM;
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step->max_needed_to = MIN_NEEDED_FROM + 2;
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}
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/* Yes, this is a stateful encoding. */
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step->stateful = 1;
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result = GCONV_OK;
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}
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return result;
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}
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void
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gconv_end (struct gconv_step *data)
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{
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free (data->data);
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}
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/* Since this is a stateful encoding we have to provide code which resets
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the output state to the initial state. This has to be done during the
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flushing. */
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#define EMIT_SHIFT_TO_INIT \
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if (data->statep->count != ASCII_set) \
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{ \
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enum direction dir = ((struct iso2022jp_data *) step->data)->dir; \
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\
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if (dir == from_iso2022jp) \
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/* It's easy, we don't have to emit anything, we just reset the \
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state for the input. */ \
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data->statep->count = ASCII_set; \
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else \
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{ \
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char *outbuf = data->outbuf; \
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\
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/* We are not in the initial state. To switch back we have \
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to emit the sequence `Esc ( B'. */ \
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if (outbuf + 3 > data->outbufend) \
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/* We don't have enough room in the output buffer. */ \
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status = GCONV_FULL_OUTPUT; \
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else \
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{ \
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/* Write out the shift sequence. */ \
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*outbuf++ = ESC; \
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*outbuf++ = '('; \
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*outbuf++ = 'B'; \
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data->outbuf = outbuf; \
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data->statep->count = ASCII_set; \
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} \
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} \
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}
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/* Since we might have to reset input pointer we must be able to save
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and retore the state. */
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#define SAVE_RESET_STATE(Save) \
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if (Save) \
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save_set = *setp; \
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else \
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*setp = save_set
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/* First define the conversion function from ISO-2022-JP to UCS4. */
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#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
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#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
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#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
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#define LOOPFCT FROM_LOOP
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#define BODY \
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{ \
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uint32_t ch = *inptr; \
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\
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/* Recognize escape sequences. */ \
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if (ch == ESC) \
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{ \
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/* We now must be prepared to read two to three more \
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chracters. If we have a match in the first character but \
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then the input buffer ends we terminate with an error since \
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we must not risk missing an escape sequence just because it \
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is not entirely in the current input buffer. */ \
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if (inptr + 2 >= inend \
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|| (var == iso2022jp2 && inptr[1] == '$' && inptr[2] == '(' \
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&& inptr + 3 >= inend)) \
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{ \
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/* Not enough input available. */ \
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result = GCONV_EMPTY_INPUT; \
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break; \
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} \
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\
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if (inptr[1] == '(') \
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{ \
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if (inptr[2] == 'B') \
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{ \
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/* ASCII selected. */ \
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set = ASCII_set; \
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inptr += 3; \
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continue; \
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} \
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else if (inptr[2] == 'J') \
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{ \
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/* JIS X 0201 selected. */ \
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set = JISX0201_Roman_set; \
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inptr += 3; \
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continue; \
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} \
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else if (var == iso2022jp2 && inptr[2] == 'I') \
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{ \
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/* JIS X 0201 selected. */ \
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set = JISX0201_Kana_set; \
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inptr += 3; \
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continue; \
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} \
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} \
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else if (inptr[1] == '$') \
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{ \
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if (inptr[2] == '@') \
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{ \
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/* JIS X 0208-1978 selected. */ \
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set = JISX0208_1978_set; \
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inptr += 3; \
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continue; \
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} \
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else if (inptr[2] == 'B') \
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{ \
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/* JIS X 0208-1983 selected. */ \
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set = JISX0208_1983_set; \
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inptr += 3; \
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continue; \
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} \
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else if (var == iso2022jp2) \
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{ \
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if (inptr[2] == 'A') \
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{ \
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/* GB 2312-1980 selected. */ \
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set = GB2312_set; \
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inptr += 3; \
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continue; \
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} \
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else if (inptr[2] == '(') \
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{ \
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if (inptr[3] == 'C') \
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{ \
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/* KSC 5601-1987 selected. */ \
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set = KSC5601_set; \
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inptr += 4; \
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continue; \
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} \
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else if (inptr[3] == 'D') \
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{ \
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/* JIS X 0212-1990 selected. */ \
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set = JISX0212_set; \
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inptr += 4; \
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continue; \
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} \
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} \
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} \
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} \
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else if (var == iso2022jp2 && inptr[1] == '.') \
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{ \
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if (inptr[2] == 'A') \
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{ \
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/* ISO 8859-1-GR selected. */ \
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set = ISO88591_set; \
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inptr += 3; \
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continue; \
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} \
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else if (inptr[2] == 'F') \
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{ \
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/* ISO 8859-7-GR selected. */ \
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set = ISO88597_set; \
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inptr += 3; \
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continue; \
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} \
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} \
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} \
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\
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if (set == ASCII_set \
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|| (var < ISO88591_set && (ch < 0x21 || ch == 0x7f)) \
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|| (var >= ISO88591_set && ch < 0x20)) \
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/* Almost done, just advance the input pointer. */ \
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++inptr; \
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else if (set == JISX0201_Roman_set) \
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{ \
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/* Use the JIS X 0201 table. */ \
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ch = jisx0201_to_ucs4 (ch); \
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if (ch == UNKNOWN_10646_CHAR) \
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{ \
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result = GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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++inptr; \
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} \
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else if (set == JISX0201_Kana_set) \
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{ \
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/* Use the JIS X 0201 table. */ \
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ch = jisx0201_to_ucs4 (ch + 0x80); \
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if (ch == UNKNOWN_10646_CHAR) \
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{ \
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result = GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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++inptr; \
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} \
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else if (set == ISO88591_set) \
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{ \
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/* This is quite easy. All characters are defined and the \
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ISO 10646 value is computed by adding 0x80. */ \
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ch |= 0x80; \
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++inptr; \
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} \
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else if (set == ISO88597_set) \
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{ \
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/* We use the table from the ISO 8859-7 module. */ \
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ch = iso88597_to_ucs4[(ch & 0x7f) - 0x20]; \
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if (ch == 0) \
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{ \
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result = GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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++inptr; \
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} \
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else \
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{ \
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if (set == JISX0208_1978_set || set == JISX0208_1983_set) \
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/* XXX I don't have the tables for these two old variants of \
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JIS X 0208. Therefore I'm using the tables for JIS X \
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0208-1990. If somebody has problems with this please \
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provide the appropriate tables. */ \
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ch = jisx0208_to_ucs4 (&inptr, \
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NEED_LENGTH_TEST ? inend - inptr : 2, 0); \
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else if (set == JISX0212_set) \
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/* Use the JIS X 0212 table. */ \
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ch = jisx0212_to_ucs4 (&inptr, \
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NEED_LENGTH_TEST ? inend - inptr : 2, 0); \
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else if (set == GB2312_set) \
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/* Use the GB 2312 table. */ \
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ch = gb2312_to_ucs4 (&inptr, \
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NEED_LENGTH_TEST ? inend - inptr : 2, 0); \
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else \
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{ \
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assert (set == KSC5601_set); \
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\
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/* Use the KSC 5601 table. */ \
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ch = ksc5601_to_ucs4 (&inptr, \
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NEED_LENGTH_TEST ? inend - inptr : 2, 0); \
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} \
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\
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if (NEED_LENGTH_TEST && ch == 0) \
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{ \
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result = GCONV_EMPTY_INPUT; \
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break; \
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} \
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else if (ch == UNKNOWN_10646_CHAR) \
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{ \
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result = GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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} \
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\
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*((uint32_t *) outptr)++ = ch; \
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}
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#define EXTRA_LOOP_DECLS , enum variant var, int *setp
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#define INIT_PARAMS int set = *setp
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#define UPDATE_PARAMS *setp = set
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#include <iconv/loop.c>
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/* Next, define the other direction. */
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#define MIN_NEEDED_INPUT MIN_NEEDED_TO
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#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
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#define MAX_NEEDED_OUTPUT (MAX_NEEDED_FROM + 2)
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#define LOOPFCT TO_LOOP
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#define BODY \
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{ \
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uint32_t ch; \
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size_t written = 0; \
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\
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ch = *((uint32_t *) inptr); \
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\
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/* First see whether we can write the character using the currently \
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selected character set. */ \
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if (set == ASCII_set) \
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{ \
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/* Please note that the NUL byte is *not* matched if we are not \
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currently using the ASCII charset. This is because we must \
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switch to the initial state whenever a NUL byte is written. */ \
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if (ch <= 0x7f) \
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{ \
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*outptr++ = ch; \
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written = 1; \
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} \
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} \
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else if (set == JISX0201_Roman_set) \
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{ \
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unsigned char buf[2]; \
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written = ucs4_to_jisx0201 (ch, buf); \
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if (written != UNKNOWN_10646_CHAR && buf[0] > 0x20 && buf[0] < 0x80) \
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{ \
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*outptr++ = buf[0]; \
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written = 1; \
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} \
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else \
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written = UNKNOWN_10646_CHAR; \
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} \
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else if (set == JISX0201_Kana_set) \
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{ \
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unsigned char buf[2]; \
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written = ucs4_to_jisx0201 (ch, buf); \
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if (written != UNKNOWN_10646_CHAR && buf[0] > 0xa0 && buf[0] < 0xe0) \
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{ \
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*outptr++ = buf[0] - 0x80; \
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written = 1; \
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} \
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else \
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written = UNKNOWN_10646_CHAR; \
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} \
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else if (set == ISO88591_set) \
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{ \
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if (ch >= 0x80 && ch <= 0xff) \
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{ \
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*outptr++ = ch; \
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written = 1; \
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} \
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} \
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else if (set == ISO88597_set) \
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{ \
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const struct gap *rp = from_idx; \
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\
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while (ch > rp->end) \
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++rp; \
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if (ch >= rp->start) \
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{ \
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unsigned char res = iso88597_from_ucs4[ch + rp->idx]; \
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if (res != '\0') \
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{ \
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*outptr++ = res | 0x80; \
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written = 1; \
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} \
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} \
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} \
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|
else \
|
|
{ \
|
|
if (set == JISX0208_1978_set || set == JISX0208_1983_set) \
|
|
written = ucs4_to_jisx0208 (ch, outptr, \
|
|
(NEED_LENGTH_TEST \
|
|
? outend - outptr : 2)); \
|
|
else if (set == JISX0212_set) \
|
|
written = ucs4_to_jisx0212 (ch, outptr, \
|
|
(NEED_LENGTH_TEST \
|
|
? outend - outptr : 2)); \
|
|
else if (set == GB2312_set) \
|
|
written = ucs4_to_gb2312 (ch, outptr, (NEED_LENGTH_TEST \
|
|
? outend - outptr : 2)); \
|
|
else \
|
|
{ \
|
|
assert (set == KSC5601_set); \
|
|
\
|
|
written = ucs4_to_ksc5601 (ch, outptr, \
|
|
(NEED_LENGTH_TEST \
|
|
? outend - outptr : 2)); \
|
|
} \
|
|
\
|
|
if (NEED_LENGTH_TEST && written == 0) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
else if (written != UNKNOWN_10646_CHAR) \
|
|
outptr += written; \
|
|
} \
|
|
\
|
|
if (written == UNKNOWN_10646_CHAR || written == 0) \
|
|
{ \
|
|
/* Either this is an unknown character or we have to switch \
|
|
the currently selected character set. The character sets \
|
|
do not code entirely separate parts of ISO 10646 and \
|
|
therefore there is no single correct result. If we choose \
|
|
the character set to use wrong we might be end up with \
|
|
using yet another character set for the next character \
|
|
though the current and the next could be encoded with one \
|
|
character set. We leave this kind of optimization for \
|
|
later and now simply use a fixed order in which we test for \
|
|
availability */ \
|
|
\
|
|
/* First test whether we have at least three more bytes for \
|
|
the escape sequence. The two charsets which require four \
|
|
bytes will be handled later. */ \
|
|
if (NEED_LENGTH_TEST && outptr + 3 > outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
if (ch <= 0x7f) \
|
|
{ \
|
|
/* We must encode using ASCII. First write out the \
|
|
escape sequence. */ \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'B'; \
|
|
set = ASCII_set; \
|
|
\
|
|
if (NEED_LENGTH_TEST && outptr == outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = ch; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* Now it becomes difficult. We must search the other \
|
|
character sets one by one and we cannot use simple \
|
|
arithmetic to determine whether the character can be \
|
|
encoded using this set. */ \
|
|
size_t written; \
|
|
unsigned char buf[2]; \
|
|
\
|
|
written = ucs4_to_jisx0201 (ch, buf); \
|
|
if (written != UNKNOWN_10646_CHAR && buf[0] < 0x80) \
|
|
{ \
|
|
/* We use JIS X 0201. */ \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'J'; \
|
|
set = JISX0201_Roman_set; \
|
|
\
|
|
if (NEED_LENGTH_TEST && outptr == outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = buf[0]; \
|
|
} \
|
|
else \
|
|
{ \
|
|
written = ucs4_to_jisx0208 (ch, buf, 2); \
|
|
if (written != UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
/* We use JIS X 0208. */ \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = 'B'; \
|
|
set = JISX0208_1983_set; \
|
|
\
|
|
if (NEED_LENGTH_TEST && outptr + 2 > outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
} \
|
|
else if (var == iso2022jp) \
|
|
{ \
|
|
/* We have no other choice. */ \
|
|
result = GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
else \
|
|
{ \
|
|
written = ucs4_to_jisx0212 (ch, buf, 2); \
|
|
if (written != UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
/* We use JIS X 0212. */ \
|
|
if (NEED_LENGTH_TEST && outptr + 4 > outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'D'; \
|
|
set = JISX0212_set; \
|
|
\
|
|
if (NEED_LENGTH_TEST && outptr + 2 > outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
} \
|
|
else \
|
|
{ \
|
|
written = ucs4_to_jisx0201 (ch, buf); \
|
|
if (written != UNKNOWN_10646_CHAR && buf[0] >= 0x80) \
|
|
{ \
|
|
/* We use JIS X 0201. */ \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'I'; \
|
|
set = JISX0201_Kana_set; \
|
|
\
|
|
if (NEED_LENGTH_TEST && outptr == outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = buf[0] - 0x80; \
|
|
} \
|
|
else if (ch != 0xa5 && ch >= 0x80 && ch <= 0xff) \
|
|
{ \
|
|
/* ISO 8859-1 upper half. */ \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '.'; \
|
|
*outptr++ = 'A'; \
|
|
set = ISO88591_set; \
|
|
\
|
|
if (NEED_LENGTH_TEST && outptr == outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = ch; \
|
|
} \
|
|
else \
|
|
{ \
|
|
written = ucs4_to_gb2312 (ch, buf, 2); \
|
|
if (written != UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
/* We use GB 2312. */ \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = 'A'; \
|
|
set = GB2312_set; \
|
|
\
|
|
if (NEED_LENGTH_TEST && outptr + 2 > outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
} \
|
|
else \
|
|
{ \
|
|
written = ucs4_to_ksc5601 (ch, buf, 2); \
|
|
if (written != UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
/* We use KSC 5601. */ \
|
|
if (NEED_LENGTH_TEST \
|
|
&& outptr + 4 > outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'C'; \
|
|
set = KSC5601_set; \
|
|
\
|
|
if (NEED_LENGTH_TEST \
|
|
&& outptr + 2 > outend) \
|
|
{ \
|
|
result = GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
} \
|
|
else \
|
|
{ \
|
|
result = GCONV_ILLEGAL_INPUT; \
|
|
break; \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
/* Now that we wrote the output increment the input pointer. */ \
|
|
inptr += 4; \
|
|
}
|
|
#define EXTRA_LOOP_DECLS , enum variant var, int *setp
|
|
#define INIT_PARAMS int set = *setp
|
|
#define UPDATE_PARAMS *setp = set
|
|
#include <iconv/loop.c>
|
|
|
|
|
|
/* Now define the toplevel functions. */
|
|
#include <iconv/skeleton.c>
|