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289ac9ddb4
2001-06-06 Ulrich Drepper <drepper@redhat.com> * timezone/zic.c: Update from tzcode2001c. * timezone/private.h: Likewise. * timezone/africa: Update from tzdata2001c. * timezone/asia: Likewise. * timezone/europe: Likewise. * timezone/northamerica: Likewise. * timezone/southamerica: Likewise. * timezone/zone.tab: Likewise.
690 lines
23 KiB
C
690 lines
23 KiB
C
/* Conversion module for ISO-2022-CN-EXT.
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Copyright (C) 2000, 2001 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>, 2000.
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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 <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 "gb2312.h"
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#include "iso-ir-165.h"
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#include "cns11643.h"
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#include "cns11643l1.h"
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#include "cns11643l2.h"
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#include <assert.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 have single-byte shift-in and shift-out sequences, and the single
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shift sequences SS2 and SS3 which replaces the SS2/SS3 designation for
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the next two bytes. */
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#define SI 0x0f
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#define SO 0x0e
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#define SS2_0 ESC
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#define SS2_1 0x4e
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#define SS3_0 ESC
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#define SS3_1 0x4f
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/* Definitions used in the body of the `gconv' function. */
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#define CHARSET_NAME "ISO-2022-CN-EXT//"
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#define DEFINE_INIT 1
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#define DEFINE_FINI 1
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#define FROM_LOOP from_iso2022cn_ext_loop
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#define TO_LOOP to_iso2022cn_ext_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 PREPARE_LOOP \
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int save_set; \
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int *setp = &data->__statep->__count;
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#define EXTRA_LOOP_ARGS , setp
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/* The charsets GB/T 12345-90, GB 7589-87, GB/T 13131-9X, GB 7590-87,
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and GB/T 13132-9X are not registered to the best of my knowledge and
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therefore have no escape sequence assigned. We cannot handle them
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for this reason. Tell the implementation about this. */
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#define X12345 '\0'
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#define X7589 '\0'
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#define X13131 '\0'
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#define X7590 '\0'
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#define X13132 '\0'
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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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GB2312_set,
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GB12345_set,
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CNS11643_1_set,
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ISO_IR_165_set,
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SO_mask = 7,
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GB7589_set = 1 << 3,
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GB13131_set = 2 << 3,
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CNS11643_2_set = 3 << 3,
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SS2_mask = 3 << 3,
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GB7590_set = 1 << 5,
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GB13132_set = 2 << 5,
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CNS11643_3_set = 3 << 5,
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CNS11643_4_set = 4 << 5,
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CNS11643_5_set = 5 << 5,
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CNS11643_6_set = 6 << 5,
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CNS11643_7_set = 7 << 5,
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SS3_mask = 7 << 5,
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#define CURRENT_MASK (SO_mask | SS2_mask | SS3_mask)
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GB2312_ann = 1 << 8,
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GB12345_ann = 2 << 8,
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CNS11643_1_ann = 3 << 8,
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ISO_IR_165_ann = 4 << 8,
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SO_ann = 7 << 8,
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GB7589_ann = 1 << 11,
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GB13131_ann = 2 << 11,
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CNS11643_2_ann = 3 << 11,
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SS2_ann = 3 << 11,
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GB7590_ann = 1 << 13,
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GB13132_ann = 2 << 13,
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CNS11643_3_ann = 3 << 13,
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CNS11643_4_ann = 4 << 13,
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CNS11643_5_ann = 5 << 13,
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CNS11643_6_ann = 6 << 13,
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CNS11643_7_ann = 7 << 13,
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SS3_ann = 7 << 13
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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 >> 3 != ASCII_set) \
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{ \
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if (FROM_DIRECTION) \
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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 << 3; \
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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 `SI'. */ \
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if (__builtin_expect (outbuf == outend, 0)) \
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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++ = SI; \
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if (data->__flags & __GCONV_IS_LAST) \
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*irreversible += 1; \
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data->__statep->__count = ASCII_set << 3; \
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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-CN 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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/* This is a 7bit character set, disallow all 8bit characters. */ \
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if (ch > 0x7f) \
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{ \
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if (! ignore_errors_p ()) \
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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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++*irreversible; \
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continue; \
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} \
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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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/* There are three kinds of escape sequences we have to handle: \
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- those announcing the use of GB and CNS characters on the \
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line; we can simply ignore them \
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- the initial byte of the SS2 sequence. \
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- the initial byte of the SS3 sequence. \
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*/ \
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if (inptr + 2 > inend \
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|| (inptr[1] == '$' \
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&& (inptr + 3 > inend \
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|| (inptr[2] == ')' && inptr + 4 > inend) \
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|| (inptr[2] == '*' && inptr + 4 > inend) \
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|| (inptr[2] == '+' && inptr + 4 > inend))) \
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|| (inptr[1] == SS2_1 && inptr + 4 > inend) \
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|| (inptr[1] == SS3_1 && inptr + 4 > inend)) \
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{ \
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result = __GCONV_INCOMPLETE_INPUT; \
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break; \
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} \
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if (inptr[1] == '$' \
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&& ((inptr[2] == ')' \
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&& (inptr[3] == 'A' \
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|| (X12345 != '\0' && inptr[3] == X12345) \
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|| inptr[3] == 'E' || inptr[3] == 'G')) \
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|| (inptr[2] == '*' \
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&& ((X7589 != '\0' && inptr[3] == X7589) \
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|| (X13131 != '\0' && inptr[3] == X13131) \
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|| inptr[3] == 'H')) \
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|| (inptr[2] == '+' \
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&& ((X7590 != '\0' && inptr[3] == X7590) \
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|| (X13132 != '\0' && inptr[3] == X13132) \
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|| inptr[3] == 'I' || inptr[3] == 'J' \
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|| inptr[3] == 'K' || inptr[3] == 'L' \
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|| inptr[3] == 'M')))) \
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{ \
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/* OK, we accept those character sets. */ \
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if (inptr[3] == 'A') \
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ann = (ann & ~SO_ann) | GB2312_ann; \
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else if (inptr[3] == 'G') \
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ann = (ann & ~SO_ann) | CNS11643_1_ann; \
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else if (inptr[3] == 'E') \
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ann = (ann & ~SO_ann) | ISO_IR_165_ann; \
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else if (X12345 != '\0' && inptr[3] == X12345) \
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ann = (ann & ~SO_ann) | GB12345_ann; \
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else if (inptr[3] == 'H') \
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ann = (ann & ~SS2_ann) | CNS11643_2_ann; \
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else if (X7589 != '\0' && inptr[3] == X7589) \
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ann = (ann & ~SS2_ann) | GB7589_ann; \
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else if (X13131 != '\0' && inptr[3] == X13131) \
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ann = (ann & ~SS2_ann) | GB13131_ann; \
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else if (inptr[3] == 'I') \
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ann = (ann & ~SS3_ann) | CNS11643_3_ann; \
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else if (inptr[3] == 'J') \
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ann = (ann & ~SS3_ann) | CNS11643_4_ann; \
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else if (inptr[3] == 'K') \
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ann = (ann & ~SS3_ann) | CNS11643_5_ann; \
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else if (inptr[3] == 'L') \
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ann = (ann & ~SS3_ann) | CNS11643_6_ann; \
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else if (inptr[3] == 'M') \
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ann = (ann & ~SS3_ann) | CNS11643_7_ann; \
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else if (X7590 != '\0' && inptr[3] == X7590) \
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ann = (ann & ~SS3_ann) | GB7590_ann; \
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else if (X13132 != '\0' && inptr[3] == X13132) \
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ann = (ann & ~SS3_ann) | GB13132_ann; \
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inptr += 4; \
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continue; \
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} \
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} \
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else if (ch == SO) \
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{ \
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/* Switch to use GB2312, GB12345, CNS 11643 plane 1, or ISO-IR-165, \
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depending on which S0 designation came last. The only problem \
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is what to do with faulty input files where no designator came. \
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XXX For now I'll default to use GB2312. If this is not the \
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best behavior (e.g., we should flag an error) let me know. */ \
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++inptr; \
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if ((ann & SO_ann) != 0) \
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switch (ann & SO_ann) \
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{ \
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case GB2312_ann: \
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set = GB2312_set; \
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break; \
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case GB12345_ann: \
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set = GB12345_set; \
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break; \
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case CNS11643_1_ann: \
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set = CNS11643_1_set; \
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break; \
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case ISO_IR_165_ann: \
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set = ISO_IR_165_set; \
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break; \
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default: \
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abort (); \
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} \
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else \
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{ \
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if (! ignore_errors_p ()) \
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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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++*irreversible; \
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} \
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continue; \
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} \
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else if (ch == SI) \
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{ \
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/* Switch to use ASCII. */ \
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++inptr; \
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set = ASCII_set; \
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continue; \
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} \
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\
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if (ch == ESC && inptr[1] == SS2_1) \
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{ \
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/* This is a character from CNS 11643 plane 2. \
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XXX We could test here whether the use of this character \
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set was announced. \
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XXX Currently GB7589 and GB13131 are not supported. */ \
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inptr += 2; \
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ch = cns11643l2_to_ucs4 (&inptr, 2, 0); \
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if (ch == __UNKNOWN_10646_CHAR) \
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{ \
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if (! ignore_errors_p ()) \
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{ \
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inptr -= 2; \
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result = __GCONV_ILLEGAL_INPUT; \
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break; \
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} \
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inptr += 2; \
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++*irreversible; \
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continue; \
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} \
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} \
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/* Note that we can assume here that at least 4 bytes are available if \
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the first byte is ESC since otherwise the first if would have been \
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true. */ \
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else if (ch == ESC && inptr[1] == SS3_1) \
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{ \
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/* This is a character from CNS 11643 plane 3 or higher. \
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XXX Currently GB7590 and GB13132 are not supported. */ \
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char buf[3]; \
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const char *tmp = buf; \
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\
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buf[1] = inptr[2]; \
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buf[2] = inptr[3]; \
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switch (ann & SS3_ann) \
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{ \
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case CNS11643_3_ann: \
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buf[0] = 0x23; \
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ch = cns11643_to_ucs4 (&tmp, 3, 0); \
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break; \
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case CNS11643_4_ann: \
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buf[0] = 0x24; \
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ch = cns11643_to_ucs4 (&tmp, 3, 0); \
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break; \
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case CNS11643_5_ann: \
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buf[0] = 0x25; \
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ch = cns11643_to_ucs4 (&tmp, 3, 0); \
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break; \
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case CNS11643_6_ann: \
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buf[0] = 0x26; \
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ch = cns11643_to_ucs4 (&tmp, 3, 0); \
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break; \
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case CNS11643_7_ann: \
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buf[0] = 0x27; \
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ch = cns11643_to_ucs4 (&tmp, 3, 0); \
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break; \
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default: \
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/* XXX Currently GB7590 and GB13132 are not supported. */ \
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ch = __UNKNOWN_10646_CHAR; \
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break; \
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} \
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if (ch == __UNKNOWN_10646_CHAR) \
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{ \
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if (! ignore_errors_p ()) \
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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 += 4; \
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++*irreversible; \
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continue; \
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} \
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assert (tmp == buf + 3); \
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inptr += 4; \
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} \
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else if (set == ASCII_set) \
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{ \
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/* Almost done, just advance the input pointer. */ \
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++inptr; \
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} \
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else \
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{ \
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/* That's pretty easy, we have a dedicated functions for this. */ \
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if (inend - inptr < 2) \
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{ \
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result = __GCONV_INCOMPLETE_INPUT; \
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break; \
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} \
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if (set == GB2312_set) \
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ch = gb2312_to_ucs4 (&inptr, inend - inptr, 0); \
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else if (set == ISO_IR_165_set) \
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ch = isoir165_to_ucs4 (&inptr, inend - inptr); \
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else \
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{ \
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assert (set == CNS11643_1_set); \
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ch = cns11643l1_to_ucs4 (&inptr, inend - inptr, 0); \
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} \
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\
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if (ch == 0) \
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{ \
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result = __GCONV_INCOMPLETE_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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if (! ignore_errors_p ()) \
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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 += 2; \
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++*irreversible; \
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continue; \
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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 , int *setp
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#define INIT_PARAMS int set = (*setp >> 3) & CURRENT_MASK; \
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int ann = (*setp >> 3) & ~CURRENT_MASK
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#define UPDATE_PARAMS *setp = (set | ann) << 3
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#define LOOP_NEED_FLAGS
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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
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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 = *((const 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 (ch < 0x80) \
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{ \
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if (set != ASCII_set) \
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{ \
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*outptr++ = SI; \
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set = ASCII_set; \
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if (outptr == outend) \
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{ \
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result = __GCONV_FULL_OUTPUT; \
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break; \
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} \
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} \
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\
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*outptr++ = ch; \
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written = 1; \
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\
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/* At the end of the line we have to clear the `ann' flags since \
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every line must contain this information again. */ \
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if (ch == L'\n') \
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ann = 0; \
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} \
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else \
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{ \
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char buf[2]; \
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int used; \
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\
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if (set == GB2312_set || ((ann & SO_ann) != CNS11643_1_ann \
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&& (ann & SO_ann) != ISO_IR_165_ann)) \
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{ \
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written = ucs4_to_gb2312 (ch, buf, 2); \
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used = GB2312_set; \
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} \
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else if (set == ISO_IR_165_set || (ann & SO_ann) == ISO_IR_165_set) \
|
|
{ \
|
|
written = ucs4_to_isoir165 (ch, buf, 2); \
|
|
used = ISO_IR_165_set; \
|
|
} \
|
|
else \
|
|
{ \
|
|
written = ucs4_to_cns11643l1 (ch, buf, 2); \
|
|
used = CNS11643_1_set; \
|
|
} \
|
|
\
|
|
if (written == __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
/* Cannot convert it using the currently selected SO set. \
|
|
Next try the SS2 set. */ \
|
|
written = ucs4_to_cns11643l2 (ch, buf, 2); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
/* Yep, that worked. */ \
|
|
used = CNS11643_2_set; \
|
|
else \
|
|
{ \
|
|
char tmpbuf[3]; \
|
|
\
|
|
switch (0) \
|
|
{ \
|
|
default: \
|
|
/* Well, see whether we have to change the SO set. */ \
|
|
\
|
|
if (used != GB2312_set) \
|
|
{ \
|
|
written = ucs4_to_gb2312 (ch, buf, 2); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
used = GB2312_set; \
|
|
break; \
|
|
} \
|
|
} \
|
|
\
|
|
if (used != ISO_IR_165_set) \
|
|
{ \
|
|
written = ucs4_to_isoir165 (ch, buf, 2); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
used = ISO_IR_165_set; \
|
|
break; \
|
|
} \
|
|
} \
|
|
\
|
|
if (used != CNS11643_1_set) \
|
|
{ \
|
|
written = ucs4_to_cns11643l1 (ch, buf, 2); \
|
|
if (written != __UNKNOWN_10646_CHAR) \
|
|
{ \
|
|
used = CNS11643_1_set; \
|
|
break; \
|
|
} \
|
|
} \
|
|
\
|
|
written = ucs4_to_cns11643 (ch, tmpbuf, 3); \
|
|
if (written == 3 && tmpbuf[0] >= 3 && tmpbuf[0] <= 7) \
|
|
{ \
|
|
buf[0] = tmpbuf[1]; \
|
|
buf[1] = tmpbuf[2]; \
|
|
switch (tmpbuf[0]) \
|
|
{ \
|
|
case 3: \
|
|
used = CNS11643_3_set; \
|
|
break; \
|
|
case 4: \
|
|
used = CNS11643_4_set; \
|
|
break; \
|
|
case 5: \
|
|
used = CNS11643_5_set; \
|
|
break; \
|
|
case 6: \
|
|
used = CNS11643_6_set; \
|
|
break; \
|
|
case 7: \
|
|
used = CNS11643_7_set; \
|
|
break; \
|
|
default: \
|
|
abort (); \
|
|
} \
|
|
written = 2; \
|
|
break; \
|
|
} \
|
|
\
|
|
/* XXX Currently GB7590 and GB13132 are not supported. */\
|
|
\
|
|
/* Even this does not work. Error. */ \
|
|
used = ASCII_set; \
|
|
} \
|
|
if (used == ASCII_set) \
|
|
{ \
|
|
UNICODE_TAG_HANDLER (ch, 4); \
|
|
STANDARD_ERR_HANDLER (4); \
|
|
} \
|
|
} \
|
|
} \
|
|
assert (written == 2); \
|
|
\
|
|
/* See whether we have to emit an escape sequence. */ \
|
|
if (set != used) \
|
|
{ \
|
|
/* First see whether we announced that we use this \
|
|
character set. */ \
|
|
if ((used & SO_mask) != 0 && (ann & SO_ann) != (used << 8)) \
|
|
{ \
|
|
const char *escseq; \
|
|
\
|
|
if (outptr + 4 > outend) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
assert (used >= 1 && used <= 4); \
|
|
escseq = ")A\0\0)G)E" + (used - 1) * 2; \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = *escseq++; \
|
|
*outptr++ = *escseq++; \
|
|
\
|
|
ann = (ann & ~SO_ann) | (used << 8); \
|
|
} \
|
|
else if ((used & SS2_mask) != 0 && (ann & SS2_ann) != (used << 8))\
|
|
{ \
|
|
const char *escseq; \
|
|
\
|
|
assert (used == CNS11643_2_set); /* XXX */ \
|
|
escseq = "*H"; \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = *escseq++; \
|
|
*outptr++ = *escseq++; \
|
|
\
|
|
ann = (ann & ~SS2_ann) | (used << 8); \
|
|
} \
|
|
else if ((used & SS3_mask) != 0 && (ann & SS3_ann) != (used << 8))\
|
|
{ \
|
|
const char *escseq; \
|
|
\
|
|
assert ((used >> 5) >= 3 && (used >> 5) <= 7); \
|
|
escseq = "+I+J+K+L+M" + ((used >> 5) - 3) * 2; \
|
|
*outptr++ = ESC; \
|
|
*outptr++ = '$'; \
|
|
*outptr++ = *escseq++; \
|
|
*outptr++ = *escseq++; \
|
|
\
|
|
ann = (ann & ~SS3_ann) | (used << 8); \
|
|
} \
|
|
\
|
|
if (used == CNS11643_2_set) \
|
|
{ \
|
|
if (outptr + 2 > outend) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = SS2_0; \
|
|
*outptr++ = SS2_1; \
|
|
} \
|
|
else if (used >= CNS11643_3_set && used <= CNS11643_7_set) \
|
|
{ \
|
|
if (outptr + 2 > outend) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = SS3_0; \
|
|
*outptr++ = SS3_1; \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* We only have to emit something if currently ASCII is \
|
|
selected. Otherwise we are switching within the \
|
|
SO charset. */ \
|
|
if (set == ASCII_set) \
|
|
{ \
|
|
if (outptr + 1 > outend) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
*outptr++ = SO; \
|
|
} \
|
|
} \
|
|
\
|
|
/* Always test the length here since we have used up all the \
|
|
guaranteed output buffer slots. */ \
|
|
if (outptr + 2 > outend) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
} \
|
|
else if (outptr + 2 > outend) \
|
|
{ \
|
|
result = __GCONV_FULL_OUTPUT; \
|
|
break; \
|
|
} \
|
|
\
|
|
*outptr++ = buf[0]; \
|
|
*outptr++ = buf[1]; \
|
|
set = used; \
|
|
} \
|
|
\
|
|
/* Now that we wrote the output increment the input pointer. */ \
|
|
inptr += 4; \
|
|
}
|
|
#define EXTRA_LOOP_DECLS , int *setp
|
|
#define INIT_PARAMS int set = (*setp >> 3) & CURRENT_MASK; \
|
|
int ann = (*setp >> 3) & ~CURRENT_MASK
|
|
#define UPDATE_PARAMS *setp = (set | ann) << 3
|
|
#define LOOP_NEED_FLAGS
|
|
#include <iconv/loop.c>
|
|
|
|
|
|
/* Now define the toplevel functions. */
|
|
#include <iconv/skeleton.c>
|