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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>
106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
/* Tables for conversion to and from ISO-IR-165.
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converting from UCS using gaps.
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Copyright (C) 2000-2021 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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#ifndef _ISO_IR_165_H
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#define _ISO_IR_165_H 1
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#include <gconv.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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/* Table for ISO-IR-165 (CCITT Chinese) to UCS4 conversion. */
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#define ISOIR165_FROMSIZE 0x2284
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extern const uint16_t __isoir165_to_tab[ISOIR165_FROMSIZE];
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/* XXX If we at some point need an offset value to decode the byte
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sequences another parameter can be added. */
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static inline uint32_t
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__attribute ((always_inline))
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isoir165_to_ucs4 (const unsigned char **s, size_t avail)
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{
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unsigned char ch = *(*s);
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unsigned char ch2;
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uint32_t res;
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if (ch <= 0x20 || ch >= 0x7f)
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return __UNKNOWN_10646_CHAR;
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if (avail < 2)
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return 0;
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ch2 = (*s)[1];
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if (ch2 <= 0x20 || ch2 >= 0x7f)
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return __UNKNOWN_10646_CHAR;
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res = __isoir165_to_tab[(ch - 0x21) * 94 + (ch2 - 0x21)];
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if (res == 0)
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return __UNKNOWN_10646_CHAR;
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*s += 2;
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return res;
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}
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/* Tables for ISO-IR-165 (CCITT Chinese) from UCS4 conversion. */
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extern const struct gap __isoir165_from_idx[];
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extern const char __isoir165_from_tab[];
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static inline size_t
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__attribute ((always_inline))
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ucs4_to_isoir165 (uint32_t wch, unsigned char *s, size_t avail)
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{
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unsigned int ch = (unsigned int) wch;
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const char *cp;
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const struct gap *rp = __isoir165_from_idx;
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if (ch > 0xffe5)
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/* This is an illegal character. */
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return __UNKNOWN_10646_CHAR;
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while (ch > rp->end)
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++rp;
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if (ch < rp->start)
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/* This is an illegal character. */
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return __UNKNOWN_10646_CHAR;
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/* The two bytes following the index given in this record give the
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encoding in ISO-IR-165. Unless the bytes are zero. */
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cp = &__isoir165_from_tab[(ch + rp->idx) * 2];
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if (*cp == '\0')
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/* This is an illegal character. */
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return __UNKNOWN_10646_CHAR;
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if (avail < 2)
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return 0;
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s[0] = cp[0];
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s[1] = cp[1];
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return 2;
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}
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#endif /* iso-ir-165.h */
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