| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Generic conversion to and from 8bit charsets, |
| 2 | converting from UCS using gaps. |
| 3 | Copyright (C) 1997-2015 Free Software Foundation, Inc. |
| 4 | This file is part of the GNU C Library. |
| 5 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| 6 | |
| 7 | The GNU C Library is free software; you can redistribute it and/or |
| 8 | modify it under the terms of the GNU Lesser General Public |
| 9 | License as published by the Free Software Foundation; either |
| 10 | version 2.1 of the License, or (at your option) any later version. |
| 11 | |
| 12 | The GNU C Library is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | Lesser General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU Lesser General Public |
| 18 | License along with the GNU C Library; if not, see |
| 19 | <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include <dlfcn.h> |
| 22 | #include <stdint.h> |
| 23 | |
| 24 | struct gap |
| 25 | { |
| 26 | uint16_t start; |
| 27 | uint16_t end; |
| 28 | int32_t idx; |
| 29 | }; |
| 30 | |
| 31 | /* Now we can include the tables. */ |
| 32 | #include TABLES |
| 33 | |
| 34 | #ifndef NONNUL |
| 35 | # define NONNUL(c) ((c) != '\0') |
| 36 | #endif |
| 37 | |
| 38 | |
| 39 | #define FROM_LOOP from_gap |
| 40 | #define TO_LOOP to_gap |
| 41 | #define DEFINE_INIT 1 |
| 42 | #define DEFINE_FINI 1 |
| 43 | #define MIN_NEEDED_FROM 1 |
| 44 | #define MIN_NEEDED_TO 4 |
| 45 | #define ONE_DIRECTION 0 |
| 46 | |
| 47 | |
| 48 | /* First define the conversion function from the 8bit charset to UCS4. */ |
| 49 | #define MIN_NEEDED_INPUT MIN_NEEDED_FROM |
| 50 | #define MIN_NEEDED_OUTPUT MIN_NEEDED_TO |
| 51 | #define LOOPFCT FROM_LOOP |
| 52 | #define BODY \ |
| 53 | { \ |
| 54 | uint32_t ch = to_ucs4[*inptr]; \ |
| 55 | \ |
| 56 | if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (*inptr)) \ |
| 57 | { \ |
| 58 | /* This is an illegal character. */ \ |
| 59 | STANDARD_FROM_LOOP_ERR_HANDLER (1); \ |
| 60 | } \ |
| 61 | else \ |
| 62 | { \ |
| 63 | put32 (outptr, ch); \ |
| 64 | outptr += 4; \ |
| 65 | } \ |
| 66 | \ |
| 67 | ++inptr; \ |
| 68 | } |
| 69 | #define LOOP_NEED_FLAGS |
| 70 | #define ONEBYTE_BODY \ |
| 71 | { \ |
| 72 | uint32_t ch = to_ucs4[c]; \ |
| 73 | \ |
| 74 | if (HAS_HOLES && __builtin_expect (ch == L'\0', 0) && NONNUL (c)) \ |
| 75 | return WEOF; \ |
| 76 | else \ |
| 77 | return ch; \ |
| 78 | } |
| 79 | #include <iconv/loop.c> |
| 80 | |
| 81 | |
| 82 | /* Next, define the other direction. */ |
| 83 | #define MIN_NEEDED_INPUT MIN_NEEDED_TO |
| 84 | #define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM |
| 85 | #define LOOPFCT TO_LOOP |
| 86 | #define BODY \ |
| 87 | { \ |
| 88 | const struct gap *rp = from_idx; \ |
| 89 | uint32_t ch = get32 (inptr); \ |
| 90 | unsigned char res; \ |
| 91 | \ |
| 92 | if (__glibc_unlikely (ch >= 0xffff)) \ |
| 93 | { \ |
| 94 | UNICODE_TAG_HANDLER (ch, 4); \ |
| 95 | rp = NULL; \ |
| 96 | } \ |
| 97 | else \ |
| 98 | while (ch > rp->end) \ |
| 99 | ++rp; \ |
| 100 | if (__builtin_expect (rp == NULL, 0) \ |
| 101 | || __builtin_expect (ch < rp->start, 0) \ |
| 102 | || (res = from_ucs4[ch + rp->idx], \ |
| 103 | __builtin_expect (res, '\1') == '\0' && ch != 0)) \ |
| 104 | { \ |
| 105 | /* This is an illegal character. */ \ |
| 106 | STANDARD_TO_LOOP_ERR_HANDLER (4); \ |
| 107 | } \ |
| 108 | \ |
| 109 | *outptr++ = res; \ |
| 110 | inptr += 4; \ |
| 111 | } |
| 112 | #define LOOP_NEED_FLAGS |
| 113 | #include <iconv/loop.c> |
| 114 | |
| 115 | |
| 116 | /* Now define the toplevel functions. */ |
| 117 | #include <iconv/skeleton.c> |