Annotation of embedaddon/libiconv/lib/cp1258.h, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 1999-2001, 2004 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: * CP1258
! 23: */
! 24:
! 25: #include "flushwc.h"
! 26: #include "vietcomb.h"
! 27:
! 28: static const unsigned char cp1258_comb_table[] = {
! 29: 0xcc, 0xec, 0xde, 0xd2, 0xf2,
! 30: };
! 31:
! 32: /* The possible bases in viet_comp_table_data:
! 33: 0x0041..0x0045, 0x0047..0x0049, 0x004B..0x0050, 0x0052..0x0057,
! 34: 0x0059..0x005A, 0x0061..0x0065, 0x0067..0x0069, 0x006B..0x0070,
! 35: 0x0072..0x0077, 0x0079..0x007A, 0x00A5, 0x00A8, 0x00C2, 0x00C5..0x00C7,
! 36: 0x00CA, 0x00CF, 0x00D3..0x00D4, 0x00D6, 0x00D8, 0x00DA, 0x00DC, 0x00E2,
! 37: 0x00E5..0x00E7, 0x00EA, 0x00EF, 0x00F3..0x00F4, 0x00F6, 0x00F8, 0x00FA,
! 38: 0x00FC, 0x0102..0x0103, 0x01A0..0x01A1, 0x01AF..0x01B0. */
! 39: static const unsigned int cp1258_comp_bases[] = {
! 40: 0x06fdfbbe, 0x06fdfbbe, 0x00000000, 0x00000120, 0x155884e4, 0x155884e4,
! 41: 0x0000000c, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00018003
! 42: };
! 43:
! 44: static const unsigned short cp1258_2uni[128] = {
! 45: /* 0x80 */
! 46: 0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
! 47: 0x02c6, 0x2030, 0xfffd, 0x2039, 0x0152, 0xfffd, 0xfffd, 0xfffd,
! 48: /* 0x90 */
! 49: 0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
! 50: 0x02dc, 0x2122, 0xfffd, 0x203a, 0x0153, 0xfffd, 0xfffd, 0x0178,
! 51: /* 0xa0 */
! 52: 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,
! 53: 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
! 54: /* 0xb0 */
! 55: 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
! 56: 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,
! 57: /* 0xc0 */
! 58: 0x00c0, 0x00c1, 0x00c2, 0x0102, 0x00c4, 0x00c5, 0x00c6, 0x00c7,
! 59: 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x0300, 0x00cd, 0x00ce, 0x00cf,
! 60: /* 0xd0 */
! 61: 0x0110, 0x00d1, 0x0309, 0x00d3, 0x00d4, 0x01a0, 0x00d6, 0x00d7,
! 62: 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x01af, 0x0303, 0x00df,
! 63: /* 0xe0 */
! 64: 0x00e0, 0x00e1, 0x00e2, 0x0103, 0x00e4, 0x00e5, 0x00e6, 0x00e7,
! 65: 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x0301, 0x00ed, 0x00ee, 0x00ef,
! 66: /* 0xf0 */
! 67: 0x0111, 0x00f1, 0x0323, 0x00f3, 0x00f4, 0x01a1, 0x00f6, 0x00f7,
! 68: 0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x01b0, 0x20ab, 0x00ff,
! 69: };
! 70:
! 71: /* In the CP1258 to Unicode direction, the state contains a buffered
! 72: character, or 0 if none. */
! 73:
! 74: static int
! 75: cp1258_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
! 76: {
! 77: unsigned char c = *s;
! 78: unsigned short wc;
! 79: unsigned short last_wc;
! 80: if (c < 0x80) {
! 81: wc = c;
! 82: } else {
! 83: wc = cp1258_2uni[c-0x80];
! 84: if (wc == 0xfffd)
! 85: return RET_ILSEQ;
! 86: }
! 87: last_wc = conv->istate;
! 88: if (last_wc) {
! 89: if (wc >= 0x0300 && wc < 0x0340) {
! 90: /* See whether last_wc and wc can be combined. */
! 91: unsigned int k;
! 92: unsigned int i1, i2;
! 93: switch (wc) {
! 94: case 0x0300: k = 0; break;
! 95: case 0x0301: k = 1; break;
! 96: case 0x0303: k = 2; break;
! 97: case 0x0309: k = 3; break;
! 98: case 0x0323: k = 4; break;
! 99: default: abort();
! 100: }
! 101: i1 = viet_comp_table[k].idx;
! 102: i2 = i1 + viet_comp_table[k].len-1;
! 103: if (last_wc >= viet_comp_table_data[i1].base
! 104: && last_wc <= viet_comp_table_data[i2].base) {
! 105: unsigned int i;
! 106: for (;;) {
! 107: i = (i1+i2)>>1;
! 108: if (last_wc == viet_comp_table_data[i].base)
! 109: break;
! 110: if (last_wc < viet_comp_table_data[i].base) {
! 111: if (i1 == i)
! 112: goto not_combining;
! 113: i2 = i;
! 114: } else {
! 115: if (i1 != i)
! 116: i1 = i;
! 117: else {
! 118: i = i2;
! 119: if (last_wc == viet_comp_table_data[i].base)
! 120: break;
! 121: goto not_combining;
! 122: }
! 123: }
! 124: }
! 125: last_wc = viet_comp_table_data[i].composed;
! 126: /* Output the combined character. */
! 127: conv->istate = 0;
! 128: *pwc = (ucs4_t) last_wc;
! 129: return 1;
! 130: }
! 131: }
! 132: not_combining:
! 133: /* Output the buffered character. */
! 134: conv->istate = 0;
! 135: *pwc = (ucs4_t) last_wc;
! 136: return 0; /* Don't advance the input pointer. */
! 137: }
! 138: if (wc >= 0x0041 && wc <= 0x01b0
! 139: && ((cp1258_comp_bases[(wc - 0x0040) >> 5] >> (wc & 0x1f)) & 1)) {
! 140: /* wc is a possible match in viet_comp_table_data. Buffer it. */
! 141: conv->istate = wc;
! 142: return RET_TOOFEW(1);
! 143: } else {
! 144: /* Output wc immediately. */
! 145: *pwc = (ucs4_t) wc;
! 146: return 1;
! 147: }
! 148: }
! 149:
! 150: #define cp1258_flushwc normal_flushwc
! 151:
! 152: static const unsigned char cp1258_page00[88] = {
! 153: 0xc0, 0xc1, 0xc2, 0x00, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xc0-0xc7 */
! 154: 0xc8, 0xc9, 0xca, 0xcb, 0x00, 0xcd, 0xce, 0xcf, /* 0xc8-0xcf */
! 155: 0x00, 0xd1, 0x00, 0xd3, 0xd4, 0x00, 0xd6, 0xd7, /* 0xd0-0xd7 */
! 156: 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0x00, 0x00, 0xdf, /* 0xd8-0xdf */
! 157: 0xe0, 0xe1, 0xe2, 0x00, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xe0-0xe7 */
! 158: 0xe8, 0xe9, 0xea, 0xeb, 0x00, 0xed, 0xee, 0xef, /* 0xe8-0xef */
! 159: 0x00, 0xf1, 0x00, 0xf3, 0xf4, 0x00, 0xf6, 0xf7, /* 0xf0-0xf7 */
! 160: 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0x00, 0x00, 0xff, /* 0xf8-0xff */
! 161: /* 0x0100 */
! 162: 0x00, 0x00, 0xc3, 0xe3, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x07 */
! 163: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x08-0x0f */
! 164: 0xd0, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10-0x17 */
! 165: };
! 166: static const unsigned char cp1258_page01[104] = {
! 167: 0x00, 0x00, 0x8c, 0x9c, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */
! 168: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58-0x5f */
! 169: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */
! 170: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6f */
! 171: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */
! 172: 0x9f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78-0x7f */
! 173: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80-0x87 */
! 174: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88-0x8f */
! 175: 0x00, 0x00, 0x83, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x97 */
! 176: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98-0x9f */
! 177: 0xd5, 0xf5, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0-0xa7 */
! 178: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xdd, /* 0xa8-0xaf */
! 179: 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb0-0xb7 */
! 180: };
! 181: static const unsigned char cp1258_page02[32] = {
! 182: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, /* 0xc0-0xc7 */
! 183: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
! 184: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0-0xd7 */
! 185: 0x00, 0x00, 0x00, 0x00, 0x98, 0x00, 0x00, 0x00, /* 0xd8-0xdf */
! 186: };
! 187: static const unsigned char cp1258_page03[40] = {
! 188: 0xcc, 0xec, 0x00, 0xde, 0x00, 0x00, 0x00, 0x00, /* 0x00-0x07 */
! 189: 0x00, 0xd2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x08-0x0f */
! 190: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10-0x17 */
! 191: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18-0x1f */
! 192: 0x00, 0x00, 0x00, 0xf2, 0x00, 0x00, 0x00, 0x00, /* 0x20-0x27 */
! 193: };
! 194: static const unsigned char cp1258_page20[48] = {
! 195: 0x00, 0x00, 0x00, 0x96, 0x97, 0x00, 0x00, 0x00, /* 0x10-0x17 */
! 196: 0x91, 0x92, 0x82, 0x00, 0x93, 0x94, 0x84, 0x00, /* 0x18-0x1f */
! 197: 0x86, 0x87, 0x95, 0x00, 0x00, 0x00, 0x85, 0x00, /* 0x20-0x27 */
! 198: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */
! 199: 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */
! 200: 0x00, 0x8b, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */
! 201: };
! 202:
! 203: static int
! 204: cp1258_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
! 205: {
! 206: unsigned char c = 0;
! 207: if (wc < 0x0080) {
! 208: *r = wc;
! 209: return 1;
! 210: }
! 211: else if (wc >= 0x00a0 && wc < 0x00c0)
! 212: c = wc;
! 213: else if (wc >= 0x00c0 && wc < 0x0118)
! 214: c = cp1258_page00[wc-0x00c0];
! 215: else if (wc >= 0x0150 && wc < 0x01b8)
! 216: c = cp1258_page01[wc-0x0150];
! 217: else if (wc >= 0x02c0 && wc < 0x02e0)
! 218: c = cp1258_page02[wc-0x02c0];
! 219: else if (wc >= 0x0300 && wc < 0x0328)
! 220: c = cp1258_page03[wc-0x0300];
! 221: else if (wc >= 0x0340 && wc < 0x0342) /* deprecated Vietnamese tone marks */
! 222: c = cp1258_page03[wc-0x0340];
! 223: else if (wc >= 0x2010 && wc < 0x2040)
! 224: c = cp1258_page20[wc-0x2010];
! 225: else if (wc == 0x20ab)
! 226: c = 0xfe;
! 227: else if (wc == 0x20ac)
! 228: c = 0x80;
! 229: else if (wc == 0x2122)
! 230: c = 0x99;
! 231: if (c != 0) {
! 232: *r = c;
! 233: return 1;
! 234: }
! 235: /* Try canonical decomposition. */
! 236: {
! 237: /* Binary search through viet_decomp_table. */
! 238: unsigned int i1 = 0;
! 239: unsigned int i2 = sizeof(viet_decomp_table)/sizeof(viet_decomp_table[0])-1;
! 240: if (wc >= viet_decomp_table[i1].composed
! 241: && wc <= viet_decomp_table[i2].composed) {
! 242: unsigned int i;
! 243: for (;;) {
! 244: /* Here i2 - i1 > 0. */
! 245: i = (i1+i2)>>1;
! 246: if (wc == viet_decomp_table[i].composed)
! 247: break;
! 248: if (wc < viet_decomp_table[i].composed) {
! 249: if (i1 == i)
! 250: return RET_ILUNI;
! 251: /* Here i1 < i < i2. */
! 252: i2 = i;
! 253: } else {
! 254: /* Here i1 <= i < i2. */
! 255: if (i1 != i)
! 256: i1 = i;
! 257: else {
! 258: /* Here i2 - i1 = 1. */
! 259: i = i2;
! 260: if (wc == viet_decomp_table[i].composed)
! 261: break;
! 262: else
! 263: return RET_ILUNI;
! 264: }
! 265: }
! 266: }
! 267: /* Found a canonical decomposition. */
! 268: wc = viet_decomp_table[i].base;
! 269: /* wc is one of 0x0020, 0x0041..0x005a, 0x0061..0x007a, 0x00a5, 0x00a8,
! 270: 0x00c2, 0x00c5..0x00c7, 0x00ca, 0x00cf, 0x00d3, 0x00d4, 0x00d6,
! 271: 0x00d8, 0x00da, 0x00dc, 0x00e2, 0x00e5..0x00e7, 0x00ea, 0x00ef,
! 272: 0x00f3, 0x00f4, 0x00f6, 0x00f8, 0x00fc, 0x0102, 0x0103, 0x01a0,
! 273: 0x01a1, 0x01af, 0x01b0. */
! 274: if (wc < 0x0100)
! 275: c = wc;
! 276: else if (wc < 0x0118)
! 277: c = cp1258_page00[wc-0x00c0];
! 278: else
! 279: c = cp1258_page01[wc-0x0150];
! 280: if (n < 2)
! 281: return RET_TOOSMALL;
! 282: r[0] = c;
! 283: r[1] = cp1258_comb_table[viet_decomp_table[i].comb1];
! 284: return 2;
! 285: }
! 286: }
! 287: return RET_ILUNI;
! 288: }
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