1 /* 2 * Copyright (C) 1999-2001 Free Software Foundation, Inc. 3 * This file is part of the GNU LIBICONV Library. 4 * 5 * The GNU LIBICONV Library is free software; you can redistribute it 6 * and/or modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either version 2 8 * of the License, or (at your option) any later version. 9 * 10 * The GNU LIBICONV Library is distributed in the hope that it will be 11 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public 16 * License along with the GNU LIBICONV Library; see the file COPYING.LIB. 17 * If not, write to the Free Software Foundation, Inc., 51 Franklin Street, 18 * Fifth Floor, Boston, MA 02110-1301, USA. 19 */ 20 21 /* 22 * CP950 extensions 23 */ 24 25 static const unsigned short cp950ext_2uni_pagef9[157-116] = { 26 /* 0xf9 */ 27 0x7881, 0x92b9, 0x88cf, 0x58bb, 28 0x6052, 0x7ca7, 0x5afa, 0x2554, 0x2566, 0x2557, 0x2560, 0x256c, 29 0x2563, 0x255a, 0x2569, 0x255d, 0x2552, 0x2564, 0x2555, 0x255e, 30 0x256a, 0x2561, 0x2558, 0x2567, 0x255b, 0x2553, 0x2565, 0x2556, 31 0x255f, 0x256b, 0x2562, 0x2559, 0x2568, 0x255c, 0x2551, 0x2550, 32 0x256d, 0x256e, 0x2570, 0x256f, 0x2593, 33 }; 34 35 static int 36 cp950ext_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) 37 { 38 unsigned char c1 = s[0]; 39 if ((c1 == 0xf9)) { 40 if (n >= 2) { 41 unsigned char c2 = s[1]; 42 if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0xa1 && c2 < 0xff)) { 43 unsigned int i = 157 * (c1 - 0xa1) + (c2 - (c2 >= 0xa1 ? 0x62 : 0x40)); 44 unsigned short wc = 0xfffd; 45 { 46 if (i >= 13932 && i < 13973) 47 wc = cp950ext_2uni_pagef9[i-13932]; 48 } 49 if (wc != 0xfffd) { 50 *pwc = (ucs4_t) wc; 51 return 2; 52 } 53 } 54 return RET_ILSEQ; 55 } 56 return RET_TOOFEW(0); 57 } 58 return RET_ILSEQ; 59 } 60 61 static const unsigned short cp950ext_2charset[41] = { 62 0xf9f9, 0xf9f8, 0xf9e6, 0xf9ef, 0xf9dd, 0xf9e8, 0xf9f1, 0xf9df, 63 0xf9ec, 0xf9f5, 0xf9e3, 0xf9ee, 0xf9f7, 0xf9e5, 0xf9e9, 0xf9f2, 64 0xf9e0, 0xf9eb, 0xf9f4, 0xf9e2, 0xf9e7, 0xf9f0, 0xf9de, 0xf9ed, 65 0xf9f6, 0xf9e4, 0xf9ea, 0xf9f3, 0xf9e1, 0xf9fa, 0xf9fb, 0xf9fd, 66 0xf9fc, 0xf9fe, 0xf9d9, 0xf9dc, 0xf9da, 0xf9d6, 0xf9db, 0xf9d8, 67 0xf9d7, 68 }; 69 70 static const Summary16 cp950ext_uni2indx_page25[10] = { 71 /* 0x2500 */ 72 { 0, 0x0000 }, { 0, 0x0000 }, { 0, 0x0000 }, { 0, 0x0000 }, 73 { 0, 0x0000 }, { 0, 0xffff }, { 16, 0xffff }, { 32, 0x0001 }, 74 { 33, 0x0000 }, { 33, 0x0008 }, 75 }; 76 static const Summary16 cp950ext_uni2indx_page58[12] = { 77 /* 0x5800 */ 78 { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 }, 79 { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 }, 80 { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0800 }, 81 }; 82 static const Summary16 cp950ext_uni2indx_page5a[16] = { 83 /* 0x5a00 */ 84 { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 }, 85 { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 }, 86 { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 }, 87 { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0400 }, 88 }; 89 static const Summary16 cp950ext_uni2indx_page60[6] = { 90 /* 0x6000 */ 91 { 36, 0x0000 }, { 36, 0x0000 }, { 36, 0x0000 }, { 36, 0x0000 }, 92 { 36, 0x0000 }, { 36, 0x0004 }, 93 }; 94 static const Summary16 cp950ext_uni2indx_page78[9] = { 95 /* 0x7800 */ 96 { 37, 0x0000 }, { 37, 0x0000 }, { 37, 0x0000 }, { 37, 0x0000 }, 97 { 37, 0x0000 }, { 37, 0x0000 }, { 37, 0x0000 }, { 37, 0x0000 }, 98 { 37, 0x0002 }, 99 }; 100 static const Summary16 cp950ext_uni2indx_page7c[11] = { 101 /* 0x7c00 */ 102 { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0000 }, 103 { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0000 }, 104 { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0080 }, 105 }; 106 static const Summary16 cp950ext_uni2indx_page88[13] = { 107 /* 0x8800 */ 108 { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, 109 { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, 110 { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, 111 { 39, 0x8000 }, 112 }; 113 static const Summary16 cp950ext_uni2indx_page92[12] = { 114 /* 0x9200 */ 115 { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 }, 116 { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 }, 117 { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0200 }, 118 }; 119 120 static int 121 cp950ext_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) 122 { 123 if (n >= 2) { 124 const Summary16 *summary = NULL; 125 if (wc >= 0x2500 && wc < 0x25a0) 126 summary = &cp950ext_uni2indx_page25[(wc>>4)-0x250]; 127 else if (wc >= 0x5800 && wc < 0x58c0) 128 summary = &cp950ext_uni2indx_page58[(wc>>4)-0x580]; 129 else if (wc >= 0x5a00 && wc < 0x5b00) 130 summary = &cp950ext_uni2indx_page5a[(wc>>4)-0x5a0]; 131 else if (wc >= 0x6000 && wc < 0x6060) 132 summary = &cp950ext_uni2indx_page60[(wc>>4)-0x600]; 133 else if (wc >= 0x7800 && wc < 0x7890) 134 summary = &cp950ext_uni2indx_page78[(wc>>4)-0x780]; 135 else if (wc >= 0x7c00 && wc < 0x7cb0) 136 summary = &cp950ext_uni2indx_page7c[(wc>>4)-0x7c0]; 137 else if (wc >= 0x8800 && wc < 0x88d0) 138 summary = &cp950ext_uni2indx_page88[(wc>>4)-0x880]; 139 else if (wc >= 0x9200 && wc < 0x92c0) 140 summary = &cp950ext_uni2indx_page92[(wc>>4)-0x920]; 141 if (summary) { 142 unsigned short used = summary->used; 143 unsigned int i = wc & 0x0f; 144 if (used & ((unsigned short) 1 << i)) { 145 unsigned short c; 146 /* Keep in `used' only the bits 0..i-1. */ 147 used &= ((unsigned short) 1 << i) - 1; 148 /* Add `summary->indx' and the number of bits set in `used'. */ 149 used = (used & 0x5555) + ((used & 0xaaaa) >> 1); 150 used = (used & 0x3333) + ((used & 0xcccc) >> 2); 151 used = (used & 0x0f0f) + ((used & 0xf0f0) >> 4); 152 used = (used & 0x00ff) + (used >> 8); 153 c = cp950ext_2charset[summary->indx + used]; 154 r[0] = (c >> 8); r[1] = (c & 0xff); 155 return 2; 156 } 157 } 158 return RET_ILUNI; 159 } 160 return RET_TOOSMALL; 161 } 162