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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>
231 lines
5.1 KiB
C
231 lines
5.1 KiB
C
/* Access functions for GB2312 conversion.
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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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#ifndef _GB2312_H
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#define _GB2312_H 1
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#include <gconv.h>
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#include <stdint.h>
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#include <assert.h>
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/* Conversion table. */
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extern const uint16_t __gb2312_to_ucs[];
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static inline uint32_t
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__attribute ((always_inline))
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gb2312_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset)
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{
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unsigned char ch = *(*s);
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unsigned char ch2;
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int idx;
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if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x77)
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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 - offset) <= 0x20 || (ch2 - offset) >= 0x7f)
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return __UNKNOWN_10646_CHAR;
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idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset);
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if (idx > 0x1ff1)
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return __UNKNOWN_10646_CHAR;
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(*s) += 2;
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return __gb2312_to_ucs[idx] ?: ((*s) -= 2, __UNKNOWN_10646_CHAR);
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}
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extern const char __gb2312_from_ucs4_tab1[][2];
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extern const char __gb2312_from_ucs4_tab2[][2];
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extern const char __gb2312_from_ucs4_tab3[][2];
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extern const char __gb2312_from_ucs4_tab4[][2];
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extern const char __gb2312_from_ucs4_tab5[][2];
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extern const char __gb2312_from_ucs4_tab6[][2];
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extern const char __gb2312_from_ucs4_tab7[][2];
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extern const char __gb2312_from_ucs4_tab8[][2];
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extern const char __gb2312_from_ucs4_tab9[][2];
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static inline size_t
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__attribute ((always_inline))
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ucs4_to_gb2312 (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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char buf[2];
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const char *cp = buf;
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switch (ch)
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{
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case 0xa4 ... 0x101:
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cp = __gb2312_from_ucs4_tab1[ch - 0xa4];
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break;
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case 0x113:
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cp = "\x28\x25";
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break;
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case 0x11b:
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cp = "\x28\x27";
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break;
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case 0x12b:
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cp = "\x28\x29";
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break;
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case 0x14d:
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cp = "\x28\x2d";
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break;
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case 0x16b:
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cp = "\x28\x31";
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break;
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case 0x1ce:
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cp = "\x28\x23";
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break;
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case 0x1d0:
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cp = "\x28\x2b";
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break;
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case 0x1d2:
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cp = "\x28\x2f";
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break;
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case 0x1d4:
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cp = "\x28\x33";
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break;
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case 0x1d6:
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cp = "\x28\x35";
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break;
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case 0x1d8:
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cp = "\x28\x36";
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break;
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case 0x1da:
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cp = "\x28\x37";
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break;
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case 0x1dc:
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cp = "\x28\x38";
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break;
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case 0x2c7:
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cp = "\x21\x26";
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break;
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case 0x2c9:
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cp = "\x21\x25";
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break;
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case 0x391 ... 0x3c9:
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cp = __gb2312_from_ucs4_tab2[ch - 0x391];
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break;
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case 0x401 ... 0x451:
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cp = __gb2312_from_ucs4_tab3[ch - 0x401];
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break;
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case 0x2015 ... 0x203b:
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cp = __gb2312_from_ucs4_tab4[ch - 0x2015];
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break;
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case 0x2103 ... 0x22a5:
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cp = __gb2312_from_ucs4_tab5[ch - 0x2103];
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break;
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case 0x2312:
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cp = "\x21\x50";
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break;
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case 0x2460 ... 0x249b:
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cp = __gb2312_from_ucs4_tab6[ch - 0x2460];
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break;
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case 0x2500 ... 0x254b:
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buf[0] = '\x29';
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buf[1] = '\x24' + (ch % 256);
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break;
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case 0x25a0:
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cp = "\x21\x76";
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break;
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case 0x25a1:
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cp = "\x21\x75";
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break;
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case 0x25b2:
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cp = "\x21\x78";
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break;
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case 0x25b3:
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cp = "\x21\x77";
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break;
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case 0x25c6:
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cp = "\x21\x74";
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break;
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case 0x25c7:
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cp = "\x21\x73";
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break;
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case 0x25cb:
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cp = "\x21\x70";
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break;
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case 0x25ce:
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cp = "\x21\x72";
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break;
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case 0x25cf:
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cp = "\x21\x71";
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break;
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case 0x2605:
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cp = "\x21\x6f";
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break;
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case 0x2606:
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cp = "\x21\x6e";
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break;
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case 0x2640:
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cp = "\x21\x62";
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break;
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case 0x2642:
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cp = "\x21\x61";
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break;
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case 0x3000 ... 0x3129:
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cp = __gb2312_from_ucs4_tab7[ch - 0x3000];
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break;
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case 0x3220 ... 0x3229:
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buf[0] = '\x22';
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buf[1] = '\x65' + (ch - 0x3220);
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break;
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case 0x4e00 ... 0x9fa0:
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cp = __gb2312_from_ucs4_tab8[ch - 0x4e00];
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break;
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case 0xff01 ... 0xff5e:
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cp = __gb2312_from_ucs4_tab9[ch - 0xff01];
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break;
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case 0xffe0:
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cp = "\x21\x69";
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break;
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case 0xffe1:
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cp = "\x21\x6a";
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break;
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case 0xffe3:
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cp = "\x23\x7e";
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break;
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case 0xffe5:
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cp = "\x23\x24";
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break;
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default:
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return __UNKNOWN_10646_CHAR;
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}
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if (cp[0] == '\0')
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return __UNKNOWN_10646_CHAR;
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assert (cp[1] != '\0');
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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 /* gb2312.h */
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