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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>
216 lines
7.1 KiB
C
216 lines
7.1 KiB
C
/* Mapping tables for EUC-JP handling.
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Copyright (C) 1998-2021 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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#include <jis0201.h>
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#include <jis0208.h>
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#include <jis0212.h>
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/* Definitions used in the body of the `gconv' function. */
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#define CHARSET_NAME "EUC-JP//"
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#define FROM_LOOP from_euc_jp
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#define TO_LOOP to_euc_jp
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#define DEFINE_INIT 1
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#define DEFINE_FINI 1
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#define MIN_NEEDED_FROM 1
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#define MAX_NEEDED_FROM 3
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#define MIN_NEEDED_TO 4
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#define ONE_DIRECTION 0
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/* First define the conversion function from EUC-JP to UCS4. */
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#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
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#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
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#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
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#define LOOPFCT FROM_LOOP
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#define BODY \
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{ \
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uint32_t ch = *inptr; \
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\
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if (ch < 0x8e || (ch >= 0x90 && ch <= 0x9f)) \
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++inptr; \
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else if (ch == 0xff) \
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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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else \
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{ \
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/* Two or more byte character. First test whether the next \
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byte is also available. */ \
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int 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. Store the \
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intermediate result. */ \
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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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/* All second bytes of a multibyte character must be >= 0xa1. */ \
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if (__glibc_unlikely (ch2 < 0xa1)) \
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STANDARD_FROM_LOOP_ERR_HANDLER (1); \
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\
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if (ch == 0x8e) \
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{ \
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/* This is code set 2: half-width katakana. */ \
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ch = jisx0201_to_ucs4 (ch2); \
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if (__builtin_expect (ch, 0) == __UNKNOWN_10646_CHAR) \
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STANDARD_FROM_LOOP_ERR_HANDLER (1); \
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\
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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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/* This is code set 3: JIS X 0212-1990. */ \
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endp = inptr + 1; \
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\
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ch = jisx0212_to_ucs4 (&endp, inend - endp, 0x80); \
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} \
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else \
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{ \
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/* This is code set 1: JIS X 0208. */ \
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endp = inptr; \
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\
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ch = jisx0208_to_ucs4 (&endp, inend - inptr, 0x80); \
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} \
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\
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if (__builtin_expect (ch, 1) == 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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if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
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/* 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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} \
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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 ONEBYTE_BODY \
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{ \
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if (c < 0x8e || (c >= 0x90 && c <= 0x9f)) \
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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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#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 = get32 (inptr); \
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\
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if (ch < 0x8e || (ch >= 0x90 && ch <= 0x9f)) \
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/* It's plain ASCII or C1. */ \
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*outptr++ = ch; \
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else if (ch == 0xa5) \
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/* YEN sign => backslash */ \
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*outptr++ = 0x5c; \
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else if (ch == 0x203e) \
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/* overscore => asciitilde */ \
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*outptr++ = 0x7e; \
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else \
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{ \
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/* Try the JIS character sets. */ \
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size_t found; \
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\
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/* See whether we have room for at least two characters. */ \
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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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found = ucs4_to_jisx0201 (ch, outptr + 1); \
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if (found != __UNKNOWN_10646_CHAR) \
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{ \
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/* Yes, it's a JIS 0201 character. Store the shift byte. */ \
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*outptr = 0x8e; \
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outptr += 2; \
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} \
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else \
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{ \
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/* No JIS 0201 character. */ \
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found = ucs4_to_jisx0208 (ch, outptr, 2); \
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/* Please note that we always have enough room for the output. */ \
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if (found != __UNKNOWN_10646_CHAR) \
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{ \
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/* It's a JIS 0208 character, adjust it for EUC-JP. */ \
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*outptr++ += 0x80; \
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*outptr++ += 0x80; \
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} \
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else \
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{ \
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/* No JIS 0208 character. */ \
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found = ucs4_to_jisx0212 (ch, outptr + 1, \
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outend - outptr - 1); \
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\
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if (__builtin_expect (found, 1) == 0) \
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{ \
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/* We ran out of space. */ \
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result = __GCONV_FULL_OUTPUT; \
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break; \
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} \
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else if (__builtin_expect (found, 0) != __UNKNOWN_10646_CHAR) \
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{ \
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/* It's a JIS 0212 character, adjust it for EUC-JP. */ \
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*outptr++ = 0x8f; \
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*outptr++ += 0x80; \
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*outptr++ += 0x80; \
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} \
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else \
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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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} \
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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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#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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