| 1 | /* Conversion to and from ISO 11548-1. |
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| 2 | Copyright (C) 1997-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <dlfcn.h> |
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| 20 | #include <stdint.h> |
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| 21 | |
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| 22 | /* Definitions used in the body of the `gconv' function. */ |
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| 23 | #define CHARSET_NAME "ISO_11548-1//" |
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| 24 | #define FROM_LOOP from_iso11548_1 |
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| 25 | #define TO_LOOP to_iso11548_1 |
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| 26 | #define DEFINE_INIT 1 |
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| 27 | #define DEFINE_FINI 1 |
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| 28 | #define MIN_NEEDED_FROM 1 |
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| 29 | #define MIN_NEEDED_TO 4 |
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| 30 | #define ONE_DIRECTION 0 |
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| 31 | |
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| 32 | #define BRAILLE_UCS_BASE 0x2800 |
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| 33 | |
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| 34 | /* First define the conversion function from ISO 11548-1 to UCS4. */ |
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| 35 | #define MIN_NEEDED_INPUT MIN_NEEDED_FROM |
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| 36 | #define MIN_NEEDED_OUTPUT MIN_NEEDED_TO |
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| 37 | #define LOOPFCT FROM_LOOP |
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| 38 | #define BODY \ |
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| 39 | *((uint32_t *) outptr) = BRAILLE_UCS_BASE | (*inptr++); \ |
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| 40 | outptr += sizeof (uint32_t); |
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| 41 | #define ONEBYTE_BODY \ |
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| 42 | { \ |
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| 43 | return BRAILLE_UCS_BASE | c; \ |
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| 44 | } |
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| 45 | #include <iconv/loop.c> |
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| 46 | |
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| 47 | |
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| 48 | /* Next, define the other direction. */ |
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| 49 | #define MIN_NEEDED_INPUT MIN_NEEDED_TO |
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| 50 | #define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM |
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| 51 | #define LOOPFCT TO_LOOP |
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| 52 | #define BODY \ |
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| 53 | { \ |
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| 54 | uint32_t ch = *((const uint32_t *) inptr); \ |
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| 55 | if (__glibc_unlikely ((ch & 0xffffff00u) != BRAILLE_UCS_BASE)) \ |
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| 56 | { \ |
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| 57 | UNICODE_TAG_HANDLER (ch, 4); \ |
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| 58 | \ |
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| 59 | /* We have an illegal character. */ \ |
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| 60 | STANDARD_TO_LOOP_ERR_HANDLER (4); \ |
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| 61 | } \ |
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| 62 | else \ |
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| 63 | *outptr++ = (unsigned char) (ch & 0xff); \ |
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| 64 | inptr += 4; \ |
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| 65 | } |
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| 66 | #define LOOP_NEED_FLAGS |
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| 67 | #include <iconv/loop.c> |
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| 68 | |
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| 69 | |
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| 70 | /* Now define the toplevel functions. */ |
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| 71 | #include <iconv/skeleton.c> |
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| 72 | |
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