Annotation of embedaddon/libiconv/lib/cp950ext.h, revision 1.1
1.1 ! misho 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: }
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