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30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
421 lines
14 KiB
C
421 lines
14 KiB
C
/* Conversion from and to EUC-JISX0213.
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Copyright (C) 2002-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 <dlfcn.h>
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#include <stdint.h>
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#include <gconv.h>
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/* The structure of EUC-JISX0213 is as follows:
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0x00..0x7F: ASCII
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0x8E{A1..FE}: JISX0201 Katakana, with prefix 0x8E, offset by +0x80.
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0x8F{A1..FE}{A1..FE}: JISX0213 plane 2, with prefix 0x8F, offset by +0x8080.
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0x{A1..FE}{A1..FE}: JISX0213 plane 1, offset by +0x8080.
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Note that some JISX0213 characters are not contained in Unicode 3.2
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and are therefore best represented as sequences of Unicode characters.
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*/
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#include "jisx0213.h"
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/* Definitions used in the body of the `gconv' function. */
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#define CHARSET_NAME "EUC-JISX0213//"
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#define FROM_LOOP from_euc_jisx0213
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#define TO_LOOP to_euc_jisx0213
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#define DEFINE_INIT 1
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#define DEFINE_FINI 1
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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 3
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#define FROM_LOOP_MIN_NEEDED_TO 4
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#define FROM_LOOP_MAX_NEEDED_TO 8
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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 3
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#define PREPARE_LOOP \
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int saved_state; \
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int *statep = &data->__statep->__count;
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#define EXTRA_LOOP_ARGS , statep
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/* Since we might have to reset input pointer we must be able to save
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and restore the state. */
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#define SAVE_RESET_STATE(Save) \
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if (Save) \
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saved_state = *statep; \
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else \
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*statep = saved_state
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/* During EUC-JISX0213 to UCS-4 conversion, the COUNT element of the state
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contains the last UCS-4 character, shifted by 3 bits.
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During UCS-4 to EUC-JISX0213 conversion, the COUNT element of the state
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contains the last two bytes to be output, shifted by 3 bits. */
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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 != 0) \
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{ \
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if (FROM_DIRECTION) \
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{ \
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if (__glibc_likely (outbuf + 4 <= outend)) \
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{ \
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/* Write out the last character. */ \
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*((uint32_t *) outbuf) = data->__statep->__count >> 3; \
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outbuf += sizeof (uint32_t); \
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data->__statep->__count = 0; \
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} \
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else \
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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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} \
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else \
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{ \
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if (__glibc_likely (outbuf + 2 <= outend)) \
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{ \
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/* Write out the last character. */ \
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uint32_t lasttwo = data->__statep->__count >> 3; \
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*outbuf++ = (lasttwo >> 8) & 0xff; \
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*outbuf++ = lasttwo & 0xff; \
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data->__statep->__count = 0; \
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} \
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else \
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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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} \
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}
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/* First define the conversion function from EUC-JISX0213 to UCS-4. */
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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; \
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\
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/* Determine whether there is a buffered character pending. */ \
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ch = *statep >> 3; \
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if (__glibc_likely (ch == 0)) \
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{ \
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/* No - so look at the next input byte. */ \
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ch = *inptr; \
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\
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if (ch < 0x80) \
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/* Plain ASCII character. */ \
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++inptr; \
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else if ((ch >= 0xa1 && ch <= 0xfe) || ch == 0x8e || ch == 0x8f) \
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{ \
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/* Two or three byte character. */ \
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uint32_t ch2; \
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\
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if (__glibc_unlikely (inptr + 1 >= inend)) \
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{ \
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/* The second byte is not 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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ch2 = inptr[1]; \
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\
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/* The second byte must be >= 0xa1 and <= 0xfe. */ \
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if (__glibc_unlikely (ch2 < 0xa1 || ch2 > 0xfe)) \
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{ \
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/* This is an illegal character. */ \
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STANDARD_FROM_LOOP_ERR_HANDLER (1); \
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} \
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\
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if (ch == 0x8e) \
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{ \
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/* Half-width katakana. */ \
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if (__glibc_unlikely (ch2 > 0xdf)) \
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STANDARD_FROM_LOOP_ERR_HANDLER (1); \
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\
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ch = ch2 + 0xfec0; \
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inptr += 2; \
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} \
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else \
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{ \
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const unsigned char *endp; \
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\
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if (ch == 0x8f) \
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{ \
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/* JISX 0213 plane 2. */ \
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uint32_t ch3; \
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\
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if (__glibc_unlikely (inptr + 2 >= inend)) \
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{ \
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/* The third byte is not 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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ch3 = inptr[2]; \
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endp = inptr + 3; \
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\
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ch = jisx0213_to_ucs4 (0x200 - 0x80 + ch2, ch3 ^ 0x80); \
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} \
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else \
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{ \
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/* JISX 0213 plane 1. */ \
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endp = inptr + 2; \
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\
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ch = jisx0213_to_ucs4 (0x100 - 0x80 + ch, ch2 ^ 0x80); \
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} \
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\
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if (ch == 0) \
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/* This is an illegal character. */ \
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STANDARD_FROM_LOOP_ERR_HANDLER (1); \
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\
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inptr = endp; \
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\
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if (ch < 0x80) \
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{ \
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/* It's a combining character. */ \
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uint32_t u1 = __jisx0213_to_ucs_combining[ch - 1][0]; \
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uint32_t u2 = __jisx0213_to_ucs_combining[ch - 1][1]; \
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\
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put32 (outptr, u1); \
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outptr += 4; \
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\
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/* See whether we have room for two characters. */ \
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if (outptr + 4 <= outend) \
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{ \
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put32 (outptr, u2); \
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outptr += 4; \
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continue; \
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} \
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\
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/* Otherwise store only the first character now, and \
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put the second one into the queue. */ \
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*statep = u2 << 3; \
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/* Tell the caller why we terminate the loop. */ \
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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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else \
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{ \
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/* This is illegal. */ \
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STANDARD_FROM_LOOP_ERR_HANDLER (1); \
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} \
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} \
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\
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put32 (outptr, ch); \
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outptr += 4; \
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}
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#define LOOP_NEED_FLAGS
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#define EXTRA_LOOP_DECLS , int *statep
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#define ONEBYTE_BODY \
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{ \
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if (c < 0x80) \
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return c; \
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else \
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return WEOF; \
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}
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#include <iconv/loop.c>
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/* Next, define the other direction, from UCS-4 to EUC-JISX0213. */
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/* Composition tables for each of the relevant combining characters. */
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static const struct
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{
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uint16_t base;
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uint16_t composed;
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} comp_table_data[] =
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{
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#define COMP_TABLE_IDX_02E5 0
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#define COMP_TABLE_LEN_02E5 1
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{ 0xabe4, 0xabe5 }, /* 0x12B65 = 0x12B64 U+02E5 */
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#define COMP_TABLE_IDX_02E9 (COMP_TABLE_IDX_02E5 + COMP_TABLE_LEN_02E5)
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#define COMP_TABLE_LEN_02E9 1
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{ 0xabe0, 0xabe6 }, /* 0x12B66 = 0x12B60 U+02E9 */
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#define COMP_TABLE_IDX_0300 (COMP_TABLE_IDX_02E9 + COMP_TABLE_LEN_02E9)
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#define COMP_TABLE_LEN_0300 5
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{ 0xa9dc, 0xabc4 }, /* 0x12B44 = 0x1295C U+0300 */
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{ 0xabb8, 0xabc8 }, /* 0x12B48 = 0x12B38 U+0300 */
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{ 0xabb7, 0xabca }, /* 0x12B4A = 0x12B37 U+0300 */
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{ 0xabb0, 0xabcc }, /* 0x12B4C = 0x12B30 U+0300 */
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{ 0xabc3, 0xabce }, /* 0x12B4E = 0x12B43 U+0300 */
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#define COMP_TABLE_IDX_0301 (COMP_TABLE_IDX_0300 + COMP_TABLE_LEN_0300)
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#define COMP_TABLE_LEN_0301 4
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{ 0xabb8, 0xabc9 }, /* 0x12B49 = 0x12B38 U+0301 */
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{ 0xabb7, 0xabcb }, /* 0x12B4B = 0x12B37 U+0301 */
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{ 0xabb0, 0xabcd }, /* 0x12B4D = 0x12B30 U+0301 */
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{ 0xabc3, 0xabcf }, /* 0x12B4F = 0x12B43 U+0301 */
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#define COMP_TABLE_IDX_309A (COMP_TABLE_IDX_0301 + COMP_TABLE_LEN_0301)
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#define COMP_TABLE_LEN_309A 14
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{ 0xa4ab, 0xa4f7 }, /* 0x12477 = 0x1242B U+309A */
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{ 0xa4ad, 0xa4f8 }, /* 0x12478 = 0x1242D U+309A */
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{ 0xa4af, 0xa4f9 }, /* 0x12479 = 0x1242F U+309A */
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{ 0xa4b1, 0xa4fa }, /* 0x1247A = 0x12431 U+309A */
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{ 0xa4b3, 0xa4fb }, /* 0x1247B = 0x12433 U+309A */
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{ 0xa5ab, 0xa5f7 }, /* 0x12577 = 0x1252B U+309A */
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{ 0xa5ad, 0xa5f8 }, /* 0x12578 = 0x1252D U+309A */
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{ 0xa5af, 0xa5f9 }, /* 0x12579 = 0x1252F U+309A */
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{ 0xa5b1, 0xa5fa }, /* 0x1257A = 0x12531 U+309A */
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{ 0xa5b3, 0xa5fb }, /* 0x1257B = 0x12533 U+309A */
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{ 0xa5bb, 0xa5fc }, /* 0x1257C = 0x1253B U+309A */
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{ 0xa5c4, 0xa5fd }, /* 0x1257D = 0x12544 U+309A */
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{ 0xa5c8, 0xa5fe }, /* 0x1257E = 0x12548 U+309A */
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{ 0xa6f5, 0xa6f8 }, /* 0x12678 = 0x12675 U+309A */
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};
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#define MIN_NEEDED_INPUT TO_LOOP_MIN_NEEDED_FROM
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#define MAX_NEEDED_INPUT TO_LOOP_MAX_NEEDED_FROM
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#define MIN_NEEDED_OUTPUT TO_LOOP_MIN_NEEDED_TO
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#define MAX_NEEDED_OUTPUT TO_LOOP_MAX_NEEDED_TO
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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 = get32 (inptr); \
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\
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if ((*statep >> 3) != 0) \
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{ \
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/* Attempt to combine the last character with this one. */ \
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uint16_t lasttwo = *statep >> 3; \
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unsigned int idx; \
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unsigned int len; \
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\
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if (ch == 0x02e5) \
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idx = COMP_TABLE_IDX_02E5, len = COMP_TABLE_LEN_02E5; \
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else if (ch == 0x02e9) \
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idx = COMP_TABLE_IDX_02E9, len = COMP_TABLE_LEN_02E9; \
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else if (ch == 0x0300) \
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idx = COMP_TABLE_IDX_0300, len = COMP_TABLE_LEN_0300; \
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else if (ch == 0x0301) \
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idx = COMP_TABLE_IDX_0301, len = COMP_TABLE_LEN_0301; \
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else if (ch == 0x309a) \
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idx = COMP_TABLE_IDX_309A, len = COMP_TABLE_LEN_309A; \
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else \
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goto not_combining; \
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\
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do \
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if (comp_table_data[idx].base == lasttwo) \
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break; \
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while (++idx, --len > 0); \
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\
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if (len > 0) \
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{ \
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/* Output the combined character. */ \
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if (__glibc_unlikely (outptr + 1 >= 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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lasttwo = comp_table_data[idx].composed; \
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*outptr++ = (lasttwo >> 8) & 0xff; \
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*outptr++ = lasttwo & 0xff; \
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*statep = 0; \
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inptr += 4; \
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continue; \
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} \
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\
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not_combining: \
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/* Output the buffered character. */ \
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if (__glibc_unlikely (outptr + 1 >= 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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*outptr++ = (lasttwo >> 8) & 0xff; \
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*outptr++ = lasttwo & 0xff; \
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*statep = 0; \
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continue; \
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} \
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\
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if (ch < 0x80) \
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/* Plain ASCII character. */ \
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*outptr++ = ch; \
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else if (ch >= 0xff61 && ch <= 0xff9f) \
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{ \
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/* Half-width katakana. */ \
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if (__glibc_unlikely (outptr + 1 >= 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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*outptr++ = 0x8e; \
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*outptr++ = ch - 0xfec0; \
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} \
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else \
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{ \
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uint32_t jch = ucs4_to_jisx0213 (ch); \
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if (jch == 0) \
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{ \
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UNICODE_TAG_HANDLER (ch, 4); \
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\
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/* Illegal character. */ \
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STANDARD_TO_LOOP_ERR_HANDLER (4); \
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} \
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\
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if (jch & 0x0080) \
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{ \
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/* A possible match in comp_table_data. We have to buffer it. */\
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\
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/* We know it's a JISX 0213 plane 1 character. */ \
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assert ((jch & 0x8000) == 0); \
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\
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*statep = (jch | 0x8080) << 3; \
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inptr += 4; \
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continue; \
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} \
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\
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if (jch & 0x8000) \
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{ \
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/* JISX 0213 plane 2. */ \
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if (__glibc_unlikely (outptr + 2 >= 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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*outptr++ = 0x8f; \
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} \
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else \
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{ \
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/* JISX 0213 plane 1. */ \
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if (__glibc_unlikely (outptr + 1 >= 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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*outptr++ = (jch >> 8) | 0x80; \
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*outptr++ = (jch & 0xff) | 0x80; \
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} \
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\
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inptr += 4; \
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}
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#define LOOP_NEED_FLAGS
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#define EXTRA_LOOP_DECLS , int *statep
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#include <iconv/loop.c>
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/* Now define the toplevel functions. */
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#include <iconv/skeleton.c>
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