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