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688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/* Generic conversion to and from 8bit charsets,
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converting from UCS using gaps.
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Copyright (C) 1997-2018 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>, 1997.
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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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<http://www.gnu.org/licenses/>. */
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#include <dlfcn.h>
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#include <stdint.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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/* Now we can include the tables. */
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#include TABLES
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#ifndef NONNUL
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# define NONNUL(c) ((c) != '\0')
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#endif
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#define FROM_LOOP from_gap
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#define TO_LOOP to_gap
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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 MIN_NEEDED_TO 4
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#define ONE_DIRECTION 0
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/* First define the conversion function from the 8bit charset to UCS4. */
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#define MIN_NEEDED_INPUT MIN_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 = to_ucs4[*inptr]; \
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\
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if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (*inptr)) \
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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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else \
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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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\
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++inptr; \
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}
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#define LOOP_NEED_FLAGS
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#define ONEBYTE_BODY \
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{ \
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uint32_t ch = to_ucs4[c]; \
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\
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if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (c)) \
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return WEOF; \
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else \
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return ch; \
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}
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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 LOOPFCT TO_LOOP
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#define BODY \
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{ \
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const struct gap *rp = from_idx; \
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uint32_t ch = get32 (inptr); \
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unsigned char res; \
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\
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if (__glibc_unlikely (ch >= 0xffff)) \
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{ \
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UNICODE_TAG_HANDLER (ch, 4); \
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rp = NULL; \
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} \
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else \
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while (ch > rp->end) \
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++rp; \
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if (__builtin_expect (rp == NULL, 0) \
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|| __builtin_expect (ch < rp->start, 0) \
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|| (res = from_ucs4[ch + rp->idx], \
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__builtin_expect (res, '\1') == '\0' && ch != 0)) \
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{ \
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/* This is an illegal character. */ \
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STANDARD_TO_LOOP_ERR_HANDLER (4); \
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} \
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\
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*outptr++ = res; \
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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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