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1035 lines
34 KiB
C
1035 lines
34 KiB
C
/* Conversion module for ISO-2022-JP and ISO-2022-JP-2.
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Copyright (C) 1998-2019 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 Lesser General Public
|
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License as published by the Free Software Foundation; either
|
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <dlfcn.h>
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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 ONE_DIRECTION 0
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#define FROM_LOOP_MIN_NEEDED_FROM 1
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#define FROM_LOOP_MAX_NEEDED_FROM 4
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#define FROM_LOOP_MIN_NEEDED_TO 4
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#define FROM_LOOP_MAX_NEEDED_TO 4
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#define TO_LOOP_MIN_NEEDED_FROM 4
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#define TO_LOOP_MAX_NEEDED_FROM 4
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#define TO_LOOP_MIN_NEEDED_TO 1
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#define TO_LOOP_MAX_NEEDED_TO 6
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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 = 1 << 3,
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JISX0208_1983_set = 2 << 3,
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JISX0201_Roman_set = 3 << 3,
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JISX0201_Kana_set = 4 << 3,
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GB2312_set = 5 << 3,
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KSC5601_set = 6 << 3,
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JISX0212_set = 7 << 3,
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CURRENT_SEL_MASK = 7 << 3
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};
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/* The second value stored is the designation of the G2 set. The following
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values are possible: */
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enum
|
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{
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UNSPECIFIED_set = 0,
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ISO88591_set = 1 << 6,
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ISO88597_set = 2 << 6,
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CURRENT_ASSIGN_MASK = 3 << 6
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};
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/* The third value, only used during conversion from Unicode to ISO-2022-JP-2,
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describes the language tag parsing status. The possible values are as
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follows. Values >= TAG_language are temporary tag parsing states. */
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enum
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{
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TAG_none = 0,
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TAG_language = 4 << 8,
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TAG_language_j = 5 << 8,
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TAG_language_ja = 1 << 8,
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TAG_language_k = 6 << 8,
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TAG_language_ko = 2 << 8,
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TAG_language_z = 7 << 8,
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TAG_language_zh = 3 << 8,
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CURRENT_TAG_MASK = 7 << 8
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};
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extern int gconv_init (struct __gconv_step *step);
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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 (__builtin_expect (dir, from_iso2022jp) != illegal_dir)
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{
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new_data
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= (struct iso2022jp_data *) malloc (sizeof (struct iso2022jp_data));
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result = __GCONV_NOMEM;
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if (new_data != 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 = FROM_LOOP_MIN_NEEDED_FROM;
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step->__max_needed_from = FROM_LOOP_MAX_NEEDED_FROM;
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step->__min_needed_to = FROM_LOOP_MIN_NEEDED_TO;
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step->__max_needed_to = FROM_LOOP_MAX_NEEDED_TO;
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}
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else
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{
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step->__min_needed_from = TO_LOOP_MIN_NEEDED_FROM;
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step->__max_needed_from = TO_LOOP_MAX_NEEDED_FROM;
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step->__min_needed_to = TO_LOOP_MIN_NEEDED_TO;
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step->__max_needed_to = TO_LOOP_MAX_NEEDED_TO;
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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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}
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return result;
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}
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extern void gconv_end (struct __gconv_step *data);
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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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/* Avoid warning about unused variable 'var'. */ \
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(void) var; \
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\
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if ((data->__statep->__count & ~7) != ASCII_set) \
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{ \
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if (dir == from_iso2022jp \
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|| (data->__statep->__count & CURRENT_SEL_MASK) == ASCII_set) \
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{ \
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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. Note that this also clears the G2 \
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designation. */ \
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data->__statep->__count &= 7; \
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data->__statep->__count |= ASCII_set; \
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} \
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else \
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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 (__glibc_unlikely (outbuf + 3 > outend)) \
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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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/* Note that this also clears the G2 designation. */ \
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data->__statep->__count &= 7; \
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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 FROM_LOOP_MIN_NEEDED_FROM
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#define MAX_NEEDED_INPUT FROM_LOOP_MAX_NEEDED_FROM
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#define MIN_NEEDED_OUTPUT FROM_LOOP_MIN_NEEDED_TO
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#define MAX_NEEDED_OUTPUT FROM_LOOP_MAX_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 (__builtin_expect (ch, 0) == ESC) \
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{ \
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/* We now must be prepared to read two to three more \
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characters. 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 (__builtin_expect (inptr + 2 >= inend, 0) \
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|| (var == iso2022jp2 && inptr[1] == '$' && inptr[2] == '(' \
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&& __builtin_expect (inptr + 3 >= inend, 0))) \
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{ \
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/* Not enough input available. */ \
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result = __GCONV_INCOMPLETE_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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else if (var == iso2022jp2) \
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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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else if (inptr[2] == '(') \
|
|
{ \
|
|
if (inptr[3] == 'C') \
|
|
{ \
|
|
/* KSC 5601-1987 selected. */ \
|
|
set = KSC5601_set; \
|
|
inptr += 4; \
|
|
continue; \
|
|
} \
|
|
else if (inptr[3] == 'D') \
|
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{ \
|
|
/* JIS X 0212-1990 selected. */ \
|
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set = JISX0212_set; \
|
|
inptr += 4; \
|
|
continue; \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
else if (var == iso2022jp2 && inptr[1] == '.') \
|
|
{ \
|
|
if (inptr[2] == 'A') \
|
|
{ \
|
|
/* ISO 8859-1-GR selected. */ \
|
|
set2 = ISO88591_set; \
|
|
inptr += 3; \
|
|
continue; \
|
|
} \
|
|
else if (inptr[2] == 'F') \
|
|
{ \
|
|
/* ISO 8859-7-GR selected. */ \
|
|
set2 = ISO88597_set; \
|
|
inptr += 3; \
|
|
continue; \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
if (ch == ESC && var == iso2022jp2 && inptr[1] == 'N') \
|
|
{ \
|
|
if (set2 == ISO88591_set) \
|
|
{ \
|
|
ch = inptr[2] | 0x80; \
|
|
inptr += 3; \
|
|
} \
|
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else if (__builtin_expect (set2, ISO88597_set) == ISO88597_set) \
|
|
{ \
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|
/* We use the table from the ISO 8859-7 module. */ \
|
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if (inptr[2] < 0x20 || inptr[2] >= 0x80) \
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|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
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|
ch = iso88597_to_ucs4[inptr[2] - 0x20]; \
|
|
if (ch == 0) \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (3); \
|
|
inptr += 3; \
|
|
} \
|
|
else \
|
|
{ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
} \
|
|
} \
|
|
else if (ch >= 0x80) \
|
|
{ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
} \
|
|
else if (set == ASCII_set || (ch < 0x21 || ch == 0x7f)) \
|
|
/* Almost done, just advance the input pointer. */ \
|
|
++inptr; \
|
|
else if (set == JISX0201_Roman_set) \
|
|
{ \
|
|
/* Use the JIS X 0201 table. */ \
|
|
ch = jisx0201_to_ucs4 (ch); \
|
|
if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
++inptr; \
|
|
} \
|
|
else if (set == JISX0201_Kana_set) \
|
|
{ \
|
|
/* Use the JIS X 0201 table. */ \
|
|
ch = jisx0201_to_ucs4 (ch + 0x80); \
|
|
if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
++inptr; \
|
|
} \
|
|
else \
|
|
{ \
|
|
if (set == JISX0208_1978_set || set == JISX0208_1983_set) \
|
|
/* XXX I don't have the tables for these two old variants of \
|
|
JIS X 0208. Therefore I'm using the tables for JIS X \
|
|
0208-1990. If somebody has problems with this please \
|
|
provide the appropriate tables. */ \
|
|
ch = jisx0208_to_ucs4 (&inptr, inend - inptr, 0); \
|
|
else if (set == JISX0212_set) \
|
|
/* Use the JIS X 0212 table. */ \
|
|
ch = jisx0212_to_ucs4 (&inptr, inend - inptr, 0); \
|
|
else if (set == GB2312_set) \
|
|
/* Use the GB 2312 table. */ \
|
|
ch = gb2312_to_ucs4 (&inptr, inend - inptr, 0); \
|
|
else \
|
|
{ \
|
|
assert (set == KSC5601_set); \
|
|
\
|
|
/* Use the KSC 5601 table. */ \
|
|
ch = ksc5601_to_ucs4 (&inptr, inend - inptr, 0); \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (ch == 0)) \
|
|
{ \
|
|
result = __GCONV_INCOMPLETE_INPUT; \
|
|
break; \
|
|
} \
|
|
else if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
|
|
{ \
|
|
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
|
|
} \
|
|
} \
|
|
\
|
|
put32 (outptr, ch); \
|
|
outptr += 4; \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#define EXTRA_LOOP_DECLS , enum variant var, int *setp
|
|
#define INIT_PARAMS int set = *setp & CURRENT_SEL_MASK; \
|
|
int set2 = *setp & CURRENT_ASSIGN_MASK
|
|
#define UPDATE_PARAMS *setp = set | set2
|
|
#include <iconv/loop.c>
|
|
|
|
|
|
/* Next, define the other direction. */
|
|
|
|
enum conversion { none = 0, european, japanese, chinese, korean, other };
|
|
|
|
/* A datatype for conversion lists. */
|
|
typedef unsigned int cvlist_t;
|
|
#define CVLIST(cv1, cv2, cv3, cv4, cv5) \
|
|
((cv1) + ((cv2) << 3) + ((cv3) << 6) + ((cv4) << 9) + ((cv5) << 12))
|
|
#define CVLIST_FIRST(cvl) ((cvl) & ((1 << 3) - 1))
|
|
#define CVLIST_REST(cvl) ((cvl) >> 3)
|
|
static const cvlist_t conversion_lists[4] =
|
|
{
|
|
/* TAG_none */ CVLIST (japanese, european, chinese, korean, other),
|
|
/* TAG_language_ja */ CVLIST (japanese, european, chinese, korean, other),
|
|
/* TAG_language_ko */ CVLIST (korean, european, japanese, chinese, other),
|
|
/* TAG_language_zh */ CVLIST (chinese, european, japanese, korean, other)
|
|
};
|
|
|
|
#define MIN_NEEDED_INPUT TO_LOOP_MIN_NEEDED_FROM
|
|
#define MAX_NEEDED_INPUT TO_LOOP_MAX_NEEDED_FROM
|
|
#define MIN_NEEDED_OUTPUT TO_LOOP_MIN_NEEDED_TO
|
|
#define MAX_NEEDED_OUTPUT TO_LOOP_MAX_NEEDED_TO
|
|
#define LOOPFCT TO_LOOP
|
|
#define BODY \
|
|
{ \
|
|
uint32_t ch; \
|
|
size_t written; \
|
|
\
|
|
ch = get32 (inptr); \
|
|
\
|
|
if (var == iso2022jp2) \
|
|
{ \
|
|
/* Handle Unicode tag characters (range U+E0000..U+E007F). */ \
|
|
if (__glibc_unlikely ((ch >> 7) == (0xe0000 >> 7))) \
|
|
{ \
|
|
ch &= 0x7f; \
|
|
if (ch >= 'A' && ch <= 'Z') \
|
|
ch += 'a' - 'A'; \
|
|
if (ch == 0x01) \
|
|
tag = TAG_language; \
|
|
else if (ch == 'j' && tag == TAG_language) \
|
|
tag = TAG_language_j; \
|
|
else if (ch == 'a' && tag == TAG_language_j) \
|
|
tag = TAG_language_ja; \
|
|
else if (ch == 'k' && tag == TAG_language) \
|
|
tag = TAG_language_k; \
|
|
else if (ch == 'o' && tag == TAG_language_k) \
|
|
tag = TAG_language_ko; \
|
|
else if (ch == 'z' && tag == TAG_language) \
|
|
tag = TAG_language_z; \
|
|
else if (ch == 'h' && tag == TAG_language_z) \
|
|
tag = TAG_language_zh; \
|
|
else if (ch == 0x7f) \
|
|
tag = TAG_none; \
|
|
else \
|
|
{ \
|
|
/* Other tag characters reset the tag parsing state (if the \
|
|
current state is a temporary state) or are ignored (if \
|
|
the current state is a stable one). */ \
|
|
if (tag >= TAG_language) \
|
|
tag = TAG_none; \
|
|
} \
|
|
\
|
|
inptr += 4; \
|
|
continue; \
|
|
} \
|
|
\
|
|
/* Non-tag characters reset the tag parsing state, if the current \
|
|
state is a temporary state. */ \
|
|
if (__glibc_unlikely (tag >= TAG_language)) \
|
|
tag = TAG_none; \
|
|
} \
|
|
\
|
|
/* First see whether we can write the character using the currently \
|
|
selected character set. But ignore the selected character set if \
|
|
the current language tag shows different preferences. */ \
|
|
if (set == ASCII_set) \
|
|
{ \
|
|
/* Please note that the NUL byte is *not* matched if we are not \
|
|
currently using the ASCII charset. This is because we must \
|
|
switch to the initial state whenever a NUL byte is written. */ \
|
|
if (ch <= 0x7f) \
|
|
{ \
|
|
*outptr++ = ch; \
|
|
written = 1; \
|
|
\
|
|
/* At the beginning of a line, G2 designation is cleared. */ \
|
|
if (var == iso2022jp2 && ch == 0x0a) \
|
|
set2 = UNSPECIFIED_set; \
|
|
} \
|
|
else \
|
|
written = __UNKNOWN_10646_CHAR; \
|
|
} \
|
|
/* ISO-2022-JP recommends to encode the newline character always in \
|
|
ASCII since this allows a context-free interpretation of the \
|
|
characters at the beginning of the next line. Otherwise it would \
|
|
have to be known whether the last line ended using ASCII or \
|
|
JIS X 0201. */ \
|
|
else if (set == JISX0201_Roman_set \
|
|
&& (__builtin_expect (tag == TAG_none, 1) \
|
|
|| tag == TAG_language_ja)) \
|
|
{ \
|
|
unsigned char buf[1]; \
|
|
written = ucs4_to_jisx0201 (ch, buf); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
if (buf[0] > 0x20 && buf[0] < 0x80) \
|
|
{ \
|
|
*outptr++ = buf[0]; \
|
|
written = 1; \
|
|
} \
|
|
else \
|
|
written = __UNKNOWN_10646_CHAR; \
|
|
} \
|
|
} \
|
|
else if (set == JISX0201_Kana_set \
|
|
&& (__builtin_expect (tag == TAG_none, 1) \
|
|
|| tag == TAG_language_ja)) \
|
|
{ \
|
|
unsigned char buf[1]; \
|
|
written = ucs4_to_jisx0201 (ch, buf); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
if (buf[0] > 0xa0 && buf[0] < 0xe0) \
|
|
{ \
|
|
*outptr++ = buf[0] - 0x80; \
|
|
written = 1; \
|
|
} \
|
|
else \
|
|
written = __UNKNOWN_10646_CHAR; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
if ((set == JISX0208_1978_set || set == JISX0208_1983_set) \
|
|
&& (__builtin_expect (tag == TAG_none, 1) \
|
|
|| tag == TAG_language_ja)) \
|
|
written = ucs4_to_jisx0208 (ch, outptr, outend - outptr); \
|
|
else if (set == JISX0212_set \
|
|
&& (__builtin_expect (tag == TAG_none, 1) \
|
|
|| tag == TAG_language_ja)) \
|
|
written = ucs4_to_jisx0212 (ch, outptr, outend - outptr); \
|
|
else if (set == GB2312_set \
|
|
&& (__builtin_expect (tag == TAG_none, 1) \
|
|
|| tag == TAG_language_zh)) \
|
|
written = ucs4_to_gb2312 (ch, outptr, outend - outptr); \
|
|
else if (set == KSC5601_set \
|
|
&& (__builtin_expect (tag == TAG_none, 1) \
|
|
|| tag == TAG_language_ko)) \
|
|
written = ucs4_to_ksc5601 (ch, outptr, outend - outptr); \
|
|
else \
|
|
written = __UNKNOWN_10646_CHAR; \
|
|
\
|
|
if (__glibc_unlikely (written == 0)) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
else if (written != __UNKNOWN_10646_CHAR) \
|
|
outptr += written; \
|
|
} \
|
|
\
|
|
if (written == __UNKNOWN_10646_CHAR \
|
|
&& __builtin_expect (tag == TAG_none, 1)) \
|
|
{ \
|
|
if (set2 == ISO88591_set) \
|
|
{ \
|
|
if (ch >= 0x80 && ch <= 0xff) \
|
|
{ \
|
|
if (__glibc_unlikely (outptr + 3 > outend)) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = ESC; \
|
|
*outptr++ = 'N'; \
|
|
*outptr++ = ch & 0x7f; \
|
|
written = 3; \
|
|
} \
|
|
} \
|
|
else if (set2 == ISO88597_set) \
|
|
{ \
|
|
if (__glibc_likely (ch < 0xffff)) \
|
|
{ \
|
|
const struct gap *rp = from_idx; \
|
|
\
|
|
while (ch > rp->end) \
|
|
++rp; \
|
|
if (ch >= rp->start) \
|
|
{ \
|
|
unsigned char res = \
|
|
iso88597_from_ucs4[ch - 0xa0 + rp->idx]; \
|
|
if (res != '\0') \
|
|
{ \
|
|
if (__glibc_unlikely (outptr + 3 > outend)) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = ESC; \
|
|
*outptr++ = 'N'; \
|
|
*outptr++ = res & 0x7f; \
|
|
written = 3; \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
if (written == __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
/* The attempts to use the currently selected character set \
|
|
failed, either because the language tag changed, or because \
|
|
the character requires a different character set, or because \
|
|
the character is unknown. \
|
|
The CJK character sets partially overlap when seen as subsets \
|
|
of ISO 10646; therefore there is no single correct result. \
|
|
We use a preferrence order which depends on the language tag. */ \
|
|
\
|
|
if (ch <= 0x7f) \
|
|
{ \
|
|
/* We must encode using ASCII. First write out the \
|
|
escape sequence. */ \
|
|
if (__glibc_unlikely (outptr + 3 > outend)) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'B'; \
|
|
set = ASCII_set; \
|
|
\
|
|
if (__glibc_unlikely (outptr + 1 > outend)) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ch; \
|
|
\
|
|
/* At the beginning of a line, G2 designation is cleared. */ \
|
|
if (var == iso2022jp2 && ch == 0x0a) \
|
|
set2 = UNSPECIFIED_set; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* Now it becomes difficult. We must search the other \
|
|
character sets one by one. Use an ordered conversion \
|
|
list that depends on the current language tag. */ \
|
|
cvlist_t conversion_list; \
|
|
unsigned char buf[2]; \
|
|
int res = __GCONV_ILLEGAL_INPUT; \
|
|
\
|
|
if (var == iso2022jp2) \
|
|
conversion_list = conversion_lists[tag >> 8]; \
|
|
else \
|
|
conversion_list = CVLIST (japanese, 0, 0, 0, 0); \
|
|
\
|
|
do \
|
|
switch (CVLIST_FIRST (conversion_list)) \
|
|
{ \
|
|
case european: \
|
|
\
|
|
/* Try ISO 8859-1 upper half. */ \
|
|
if (ch >= 0x80 && ch <= 0xff) \
|
|
{ \
|
|
if (set2 != ISO88591_set) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 3 > outend, 0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '.'; \
|
|
*outptr++ = 'A'; \
|
|
set2 = ISO88591_set; \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (outptr + 3 > outend)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = 'N'; \
|
|
*outptr++ = ch - 0x80; \
|
|
res = __GCONV_OK; \
|
|
break; \
|
|
} \
|
|
\
|
|
/* Try ISO 8859-7 upper half. */ \
|
|
if (__glibc_likely (ch < 0xffff)) \
|
|
{ \
|
|
const struct gap *rp = from_idx; \
|
|
\
|
|
while (ch > rp->end) \
|
|
++rp; \
|
|
if (ch >= rp->start) \
|
|
{ \
|
|
unsigned char ch2 = \
|
|
iso88597_from_ucs4[ch - 0xa0 + rp->idx]; \
|
|
if (ch2 != '\0') \
|
|
{ \
|
|
if (set2 != ISO88597_set) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 3 > outend, \
|
|
0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '.'; \
|
|
*outptr++ = 'F'; \
|
|
set2 = ISO88597_set; \
|
|
} \
|
|
\
|
|
if (__builtin_expect (outptr + 3 > outend, 0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = 'N'; \
|
|
*outptr++ = ch2 - 0x80; \
|
|
res = __GCONV_OK; \
|
|
break; \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
break; \
|
|
\
|
|
case japanese: \
|
|
\
|
|
/* Try JIS X 0201 Roman. */ \
|
|
written = ucs4_to_jisx0201 (ch, buf); \
|
|
if (written != __UNKNOWN_10646_CHAR \
|
|
&& buf[0] > 0x20 && buf[0] < 0x80) \
|
|
{ \
|
|
if (set != JISX0201_Roman_set) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 3 > outend, 0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'J'; \
|
|
set = JISX0201_Roman_set; \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (outptr + 1 > outend)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = buf[0]; \
|
|
res = __GCONV_OK; \
|
|
break; \
|
|
} \
|
|
\
|
|
/* Try JIS X 0208. */ \
|
|
written = ucs4_to_jisx0208 (ch, buf, 2); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
if (set != JISX0208_1983_set) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 3 > outend, 0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = 'B'; \
|
|
set = JISX0208_1983_set; \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (outptr + 2 > outend)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
res = __GCONV_OK; \
|
|
break; \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (var == iso2022jp)) \
|
|
/* Don't use the other Japanese character sets. */ \
|
|
break; \
|
|
\
|
|
/* Try JIS X 0212. */ \
|
|
written = ucs4_to_jisx0212 (ch, buf, 2); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
if (set != JISX0212_set) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 4 > outend, 0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'D'; \
|
|
set = JISX0212_set; \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (outptr + 2 > outend)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
res = __GCONV_OK; \
|
|
break; \
|
|
} \
|
|
\
|
|
break; \
|
|
\
|
|
case chinese: \
|
|
assert (var == iso2022jp2); \
|
|
\
|
|
/* Try GB 2312. */ \
|
|
written = ucs4_to_gb2312 (ch, buf, 2); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
if (set != GB2312_set) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 3 > outend, 0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = 'A'; \
|
|
set = GB2312_set; \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (outptr + 2 > outend)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
res = __GCONV_OK; \
|
|
break; \
|
|
} \
|
|
\
|
|
break; \
|
|
\
|
|
case korean: \
|
|
assert (var == iso2022jp2); \
|
|
\
|
|
/* Try KSC 5601. */ \
|
|
written = ucs4_to_ksc5601 (ch, buf, 2); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
if (set != KSC5601_set) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 4 > outend, 0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'C'; \
|
|
set = KSC5601_set; \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (outptr + 2 > outend)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
res = __GCONV_OK; \
|
|
break; \
|
|
} \
|
|
\
|
|
break; \
|
|
\
|
|
case other: \
|
|
assert (var == iso2022jp2); \
|
|
\
|
|
/* Try JIS X 0201 Kana. This is not officially part \
|
|
of ISO-2022-JP-2, according to RFC 1554. Therefore \
|
|
we try this only after all other attempts. */ \
|
|
written = ucs4_to_jisx0201 (ch, buf); \
|
|
if (written != __UNKNOWN_10646_CHAR && buf[0] >= 0x80) \
|
|
{ \
|
|
if (set != JISX0201_Kana_set) \
|
|
{ \
|
|
if (__builtin_expect (outptr + 3 > outend, 0)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '('; \
|
|
*outptr++ = 'I'; \
|
|
set = JISX0201_Kana_set; \
|
|
} \
|
|
\
|
|
if (__glibc_unlikely (outptr + 1 > outend)) \
|
|
{ \
|
|
res = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = buf[0] - 0x80; \
|
|
res = __GCONV_OK; \
|
|
break; \
|
|
} \
|
|
\
|
|
break; \
|
|
\
|
|
default: \
|
|
abort (); \
|
|
} \
|
|
while (res == __GCONV_ILLEGAL_INPUT \
|
|
&& (conversion_list = CVLIST_REST (conversion_list)) != 0);\
|
|
\
|
|
if (res == __GCONV_FULL_OUTPUT) \
|
|
{ \
|
|
result = res; \
|
|
break; \
|
|
} \
|
|
\
|
|
if (res == __GCONV_ILLEGAL_INPUT) \
|
|
{ \
|
|
STANDARD_TO_LOOP_ERR_HANDLER (4); \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
/* Now that we wrote the output increment the input pointer. */ \
|
|
inptr += 4; \
|
|
}
|
|
#define LOOP_NEED_FLAGS
|
|
#define EXTRA_LOOP_DECLS , enum variant var, int *setp
|
|
#define INIT_PARAMS int set = *setp & CURRENT_SEL_MASK; \
|
|
int set2 = *setp & CURRENT_ASSIGN_MASK; \
|
|
int tag = *setp & CURRENT_TAG_MASK;
|
|
#define REINIT_PARAMS do \
|
|
{ \
|
|
set = *setp & CURRENT_SEL_MASK; \
|
|
set2 = *setp & CURRENT_ASSIGN_MASK; \
|
|
tag = *setp & CURRENT_TAG_MASK; \
|
|
} \
|
|
while (0)
|
|
#define UPDATE_PARAMS *setp = set | set2 | tag
|
|
#include <iconv/loop.c>
|
|
|
|
|
|
/* Now define the toplevel functions. */
|
|
#include <iconv/skeleton.c>
|