1 /* Mapping tables for EUC-JP handling. 2 Copyright (C) 1998-2022 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 #include <gconv.h> 22 #include <jis0201.h> 23 #include <jis0208.h> 24 #include <jis0212.h> 25 26 /* Definitions used in the body of the `gconv' function. */ 27 #define CHARSET_NAME "EUC-JP//" 28 #define FROM_LOOP from_euc_jp 29 #define TO_LOOP to_euc_jp 30 #define DEFINE_INIT 1 31 #define DEFINE_FINI 1 32 #define MIN_NEEDED_FROM 1 33 #define MAX_NEEDED_FROM 3 34 #define MIN_NEEDED_TO 4 35 #define ONE_DIRECTION 0 36 37 38 /* First define the conversion function from EUC-JP to UCS4. */ 39 #define MIN_NEEDED_INPUT MIN_NEEDED_FROM 40 #define MAX_NEEDED_INPUT MAX_NEEDED_FROM 41 #define MIN_NEEDED_OUTPUT MIN_NEEDED_TO 42 #define LOOPFCT FROM_LOOP 43 #define BODY \ 44 { \ 45 uint32_t ch = *inptr; \ 46 \ 47 if (ch < 0x8e || (ch >= 0x90 && ch <= 0x9f)) \ 48 ++inptr; \ 49 else if (ch == 0xff) \ 50 { \ 51 /* This is illegal. */ \ 52 STANDARD_FROM_LOOP_ERR_HANDLER (1); \ 53 } \ 54 else \ 55 { \ 56 /* Two or more byte character. First test whether the next \ 57 byte is also available. */ \ 58 int ch2; \ 59 \ 60 if (__glibc_unlikely (inptr + 1 >= inend)) \ 61 { \ 62 /* The second byte is not available. Store the \ 63 intermediate result. */ \ 64 result = __GCONV_INCOMPLETE_INPUT; \ 65 break; \ 66 } \ 67 \ 68 ch2 = inptr[1]; \ 69 \ 70 /* All second bytes of a multibyte character must be >= 0xa1. */ \ 71 if (__glibc_unlikely (ch2 < 0xa1)) \ 72 STANDARD_FROM_LOOP_ERR_HANDLER (1); \ 73 \ 74 if (ch == 0x8e) \ 75 { \ 76 /* This is code set 2: half-width katakana. */ \ 77 ch = jisx0201_to_ucs4 (ch2); \ 78 if (__builtin_expect (ch, 0) == __UNKNOWN_10646_CHAR) \ 79 STANDARD_FROM_LOOP_ERR_HANDLER (1); \ 80 \ 81 inptr += 2; \ 82 } \ 83 else \ 84 { \ 85 const unsigned char *endp; \ 86 \ 87 if (ch == 0x8f) \ 88 { \ 89 /* This is code set 3: JIS X 0212-1990. */ \ 90 endp = inptr + 1; \ 91 \ 92 ch = jisx0212_to_ucs4 (&endp, inend - endp, 0x80); \ 93 } \ 94 else \ 95 { \ 96 /* This is code set 1: JIS X 0208. */ \ 97 endp = inptr; \ 98 \ 99 ch = jisx0208_to_ucs4 (&endp, inend - inptr, 0x80); \ 100 } \ 101 \ 102 if (__builtin_expect (ch, 1) == 0) \ 103 { \ 104 /* Not enough input available. */ \ 105 result = __GCONV_INCOMPLETE_INPUT; \ 106 break; \ 107 } \ 108 if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \ 109 /* Illegal character. */ \ 110 STANDARD_FROM_LOOP_ERR_HANDLER (1); \ 111 \ 112 inptr = endp; \ 113 } \ 114 } \ 115 \ 116 put32 (outptr, ch); \ 117 outptr += 4; \ 118 } 119 #define ONEBYTE_BODY \ 120 { \ 121 if (c < 0x8e || (c >= 0x90 && c <= 0x9f)) \ 122 return c; \ 123 else \ 124 return WEOF; \ 125 } 126 #define LOOP_NEED_FLAGS 127 #include <iconv/loop.c> 128 129 130 /* Next, define the other direction. */ 131 #define MIN_NEEDED_INPUT MIN_NEEDED_TO 132 #define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM 133 #define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM 134 #define LOOPFCT TO_LOOP 135 #define BODY \ 136 { \ 137 uint32_t ch = get32 (inptr); \ 138 \ 139 if (ch < 0x8e || (ch >= 0x90 && ch <= 0x9f)) \ 140 /* It's plain ASCII or C1. */ \ 141 *outptr++ = ch; \ 142 else if (ch == 0xa5) \ 143 /* YEN sign => backslash */ \ 144 *outptr++ = 0x5c; \ 145 else if (ch == 0x203e) \ 146 /* overscore => asciitilde */ \ 147 *outptr++ = 0x7e; \ 148 else \ 149 { \ 150 /* Try the JIS character sets. */ \ 151 size_t found; \ 152 \ 153 /* See whether we have room for at least two characters. */ \ 154 if (__glibc_unlikely (outptr + 1 >= outend)) \ 155 { \ 156 result = __GCONV_FULL_OUTPUT; \ 157 break; \ 158 } \ 159 \ 160 found = ucs4_to_jisx0201 (ch, outptr + 1); \ 161 if (found != __UNKNOWN_10646_CHAR) \ 162 { \ 163 /* Yes, it's a JIS 0201 character. Store the shift byte. */ \ 164 *outptr = 0x8e; \ 165 outptr += 2; \ 166 } \ 167 else \ 168 { \ 169 /* No JIS 0201 character. */ \ 170 found = ucs4_to_jisx0208 (ch, outptr, 2); \ 171 /* Please note that we always have enough room for the output. */ \ 172 if (found != __UNKNOWN_10646_CHAR) \ 173 { \ 174 /* It's a JIS 0208 character, adjust it for EUC-JP. */ \ 175 *outptr++ += 0x80; \ 176 *outptr++ += 0x80; \ 177 } \ 178 else \ 179 { \ 180 /* No JIS 0208 character. */ \ 181 found = ucs4_to_jisx0212 (ch, outptr + 1, \ 182 outend - outptr - 1); \ 183 \ 184 if (__builtin_expect (found, 1) == 0) \ 185 { \ 186 /* We ran out of space. */ \ 187 result = __GCONV_FULL_OUTPUT; \ 188 break; \ 189 } \ 190 else if (__builtin_expect (found, 0) != __UNKNOWN_10646_CHAR) \ 191 { \ 192 /* It's a JIS 0212 character, adjust it for EUC-JP. */ \ 193 *outptr++ = 0x8f; \ 194 *outptr++ += 0x80; \ 195 *outptr++ += 0x80; \ 196 } \ 197 else \ 198 { \ 199 UNICODE_TAG_HANDLER (ch, 4); \ 200 \ 201 /* Illegal character. */ \ 202 STANDARD_TO_LOOP_ERR_HANDLER (4); \ 203 } \ 204 } \ 205 } \ 206 } \ 207 \ 208 inptr += 4; \ 209 } 210 #define LOOP_NEED_FLAGS 211 #include <iconv/loop.c> 212 213 214 /* Now define the toplevel functions. */ 215 #include <iconv/skeleton.c> 216