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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>
117 lines
3.4 KiB
C
117 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) 1997-2021 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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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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