Annotation of embedaddon/libiconv/lib/cp1255.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: * CP1255
! 23: */
! 24:
! 25: #include "flushwc.h"
! 26:
! 27: /* Combining characters used in Hebrew encoding CP1255. */
! 28:
! 29: /* Relevant combining characters:
! 30: 0x05b4, 0x05b7, 0x05b8, 0x05b9, 0x05bc, 0x05bf, 0x05c1, 0x05c2. */
! 31:
! 32: /* Composition tables for each of the relevant combining characters. */
! 33: static const struct { unsigned short base; unsigned short composed; } cp1255_comp_table_data[] = {
! 34: #define cp1255_comp_table05b4_idx 0
! 35: #define cp1255_comp_table05b4_len 1
! 36: { 0x05D9, 0xFB1D },
! 37: #define cp1255_comp_table05b7_idx (cp1255_comp_table05b4_idx+cp1255_comp_table05b4_len)
! 38: #define cp1255_comp_table05b7_len 2
! 39: { 0x05D0, 0xFB2E },
! 40: { 0x05F2, 0xFB1F },
! 41: #define cp1255_comp_table05b8_idx (cp1255_comp_table05b7_idx+cp1255_comp_table05b7_len)
! 42: #define cp1255_comp_table05b8_len 1
! 43: { 0x05D0, 0xFB2F },
! 44: #define cp1255_comp_table05b9_idx (cp1255_comp_table05b8_idx+cp1255_comp_table05b8_len)
! 45: #define cp1255_comp_table05b9_len 1
! 46: { 0x05D5, 0xFB4B },
! 47: #define cp1255_comp_table05bc_idx (cp1255_comp_table05b9_idx+cp1255_comp_table05b9_len)
! 48: #define cp1255_comp_table05bc_len 24
! 49: { 0x05D0, 0xFB30 },
! 50: { 0x05D1, 0xFB31 },
! 51: { 0x05D2, 0xFB32 },
! 52: { 0x05D3, 0xFB33 },
! 53: { 0x05D4, 0xFB34 },
! 54: { 0x05D5, 0xFB35 },
! 55: { 0x05D6, 0xFB36 },
! 56: { 0x05D8, 0xFB38 },
! 57: { 0x05D9, 0xFB39 },
! 58: { 0x05DA, 0xFB3A },
! 59: { 0x05DB, 0xFB3B },
! 60: { 0x05DC, 0xFB3C },
! 61: { 0x05DE, 0xFB3E },
! 62: { 0x05E0, 0xFB40 },
! 63: { 0x05E1, 0xFB41 },
! 64: { 0x05E3, 0xFB43 },
! 65: { 0x05E4, 0xFB44 },
! 66: { 0x05E6, 0xFB46 },
! 67: { 0x05E7, 0xFB47 },
! 68: { 0x05E8, 0xFB48 },
! 69: { 0x05E9, 0xFB49 },
! 70: { 0x05EA, 0xFB4A },
! 71: { 0xFB2A, 0xFB2C },
! 72: { 0xFB2B, 0xFB2D },
! 73: #define cp1255_comp_table05bf_idx (cp1255_comp_table05bc_idx+cp1255_comp_table05bc_len)
! 74: #define cp1255_comp_table05bf_len 3
! 75: { 0x05D1, 0xFB4C },
! 76: { 0x05DB, 0xFB4D },
! 77: { 0x05E4, 0xFB4E },
! 78: #define cp1255_comp_table05c1_idx (cp1255_comp_table05bf_idx+cp1255_comp_table05bf_len)
! 79: #define cp1255_comp_table05c1_len 2
! 80: { 0x05E9, 0xFB2A },
! 81: { 0xFB49, 0xFB2C },
! 82: #define cp1255_comp_table05c2_idx (cp1255_comp_table05c1_idx+cp1255_comp_table05c1_len)
! 83: #define cp1255_comp_table05c2_len 2
! 84: { 0x05E9, 0xFB2B },
! 85: { 0xFB49, 0xFB2D },
! 86: };
! 87: static const struct { unsigned int len; unsigned int idx; } cp1255_comp_table[] = {
! 88: { cp1255_comp_table05b4_len, cp1255_comp_table05b4_idx },
! 89: { cp1255_comp_table05b7_len, cp1255_comp_table05b7_idx },
! 90: { cp1255_comp_table05b8_len, cp1255_comp_table05b8_idx },
! 91: { cp1255_comp_table05b9_len, cp1255_comp_table05b9_idx },
! 92: { cp1255_comp_table05bc_len, cp1255_comp_table05bc_idx },
! 93: { cp1255_comp_table05bf_len, cp1255_comp_table05bf_idx },
! 94: { cp1255_comp_table05c1_len, cp1255_comp_table05c1_idx },
! 95: { cp1255_comp_table05c2_len, cp1255_comp_table05c2_idx },
! 96: };
! 97:
! 98: /* Decomposition table for the relevant Unicode characters. */
! 99: struct cp1255_decomp { unsigned short composed; unsigned short base; int comb1 : 8; signed int comb2 : 8; };
! 100: static const struct cp1255_decomp cp1255_decomp_table[] = {
! 101: { 0xFB1D, 0x05D9, 0, -1 },
! 102: { 0xFB1F, 0x05F2, 1, -1 },
! 103: { 0xFB2A, 0x05E9, 6, -1 },
! 104: { 0xFB2B, 0x05E9, 7, -1 },
! 105: { 0xFB2C, 0x05E9, 4, 6 },
! 106: { 0xFB2D, 0x05E9, 4, 7 },
! 107: { 0xFB2E, 0x05D0, 1, -1 },
! 108: { 0xFB2F, 0x05D0, 2, -1 },
! 109: { 0xFB30, 0x05D0, 4, -1 },
! 110: { 0xFB31, 0x05D1, 4, -1 },
! 111: { 0xFB32, 0x05D2, 4, -1 },
! 112: { 0xFB33, 0x05D3, 4, -1 },
! 113: { 0xFB34, 0x05D4, 4, -1 },
! 114: { 0xFB35, 0x05D5, 4, -1 },
! 115: { 0xFB36, 0x05D6, 4, -1 },
! 116: { 0xFB38, 0x05D8, 4, -1 },
! 117: { 0xFB39, 0x05D9, 4, -1 },
! 118: { 0xFB3A, 0x05DA, 4, -1 },
! 119: { 0xFB3B, 0x05DB, 4, -1 },
! 120: { 0xFB3C, 0x05DC, 4, -1 },
! 121: { 0xFB3E, 0x05DE, 4, -1 },
! 122: { 0xFB40, 0x05E0, 4, -1 },
! 123: { 0xFB41, 0x05E1, 4, -1 },
! 124: { 0xFB43, 0x05E3, 4, -1 },
! 125: { 0xFB44, 0x05E4, 4, -1 },
! 126: { 0xFB46, 0x05E6, 4, -1 },
! 127: { 0xFB47, 0x05E7, 4, -1 },
! 128: { 0xFB48, 0x05E8, 4, -1 },
! 129: { 0xFB49, 0x05E9, 4, -1 },
! 130: { 0xFB4A, 0x05EA, 4, -1 },
! 131: { 0xFB4B, 0x05D5, 3, -1 },
! 132: { 0xFB4C, 0x05D1, 5, -1 },
! 133: { 0xFB4D, 0x05DB, 5, -1 },
! 134: { 0xFB4E, 0x05E4, 5, -1 },
! 135: };
! 136:
! 137: static const unsigned char cp1255_comb_table[] = {
! 138: 0xc4, 0xc7, 0xc8, 0xc9, 0xcc, 0xcf, 0xd1, 0xd2,
! 139: };
! 140:
! 141: static const unsigned short cp1255_2uni[128] = {
! 142: /* 0x80 */
! 143: 0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
! 144: 0x02c6, 0x2030, 0xfffd, 0x2039, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
! 145: /* 0x90 */
! 146: 0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
! 147: 0x02dc, 0x2122, 0xfffd, 0x203a, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
! 148: /* 0xa0 */
! 149: 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x20aa, 0x00a5, 0x00a6, 0x00a7,
! 150: 0x00a8, 0x00a9, 0x00d7, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
! 151: /* 0xb0 */
! 152: 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
! 153: 0x00b8, 0x00b9, 0x00f7, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,
! 154: /* 0xc0 */
! 155: 0x05b0, 0x05b1, 0x05b2, 0x05b3, 0x05b4, 0x05b5, 0x05b6, 0x05b7,
! 156: 0x05b8, 0x05b9, 0xfffd, 0x05bb, 0x05bc, 0x05bd, 0x05be, 0x05bf,
! 157: /* 0xd0 */
! 158: 0x05c0, 0x05c1, 0x05c2, 0x05c3, 0x05f0, 0x05f1, 0x05f2, 0x05f3,
! 159: 0x05f4, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
! 160: /* 0xe0 */
! 161: 0x05d0, 0x05d1, 0x05d2, 0x05d3, 0x05d4, 0x05d5, 0x05d6, 0x05d7,
! 162: 0x05d8, 0x05d9, 0x05da, 0x05db, 0x05dc, 0x05dd, 0x05de, 0x05df,
! 163: /* 0xf0 */
! 164: 0x05e0, 0x05e1, 0x05e2, 0x05e3, 0x05e4, 0x05e5, 0x05e6, 0x05e7,
! 165: 0x05e8, 0x05e9, 0x05ea, 0xfffd, 0xfffd, 0x200e, 0x200f, 0xfffd,
! 166: };
! 167:
! 168: /* In the CP1255 to Unicode direction, the state contains a buffered
! 169: character, or 0 if none. */
! 170:
! 171: static int
! 172: cp1255_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
! 173: {
! 174: unsigned char c = *s;
! 175: unsigned short wc;
! 176: unsigned short last_wc;
! 177: if (c < 0x80) {
! 178: wc = c;
! 179: } else {
! 180: wc = cp1255_2uni[c-0x80];
! 181: if (wc == 0xfffd)
! 182: return RET_ILSEQ;
! 183: }
! 184: last_wc = conv->istate;
! 185: if (last_wc) {
! 186: if (wc >= 0x05b0 && wc < 0x05c5) {
! 187: /* See whether last_wc and wc can be combined. */
! 188: unsigned int k;
! 189: unsigned int i1, i2;
! 190: switch (wc) {
! 191: case 0x05b4: k = 0; break;
! 192: case 0x05b7: k = 1; break;
! 193: case 0x05b8: k = 2; break;
! 194: case 0x05b9: k = 3; break;
! 195: case 0x05bc: k = 4; break;
! 196: case 0x05bf: k = 5; break;
! 197: case 0x05c1: k = 6; break;
! 198: case 0x05c2: k = 7; break;
! 199: default: goto not_combining;
! 200: }
! 201: i1 = cp1255_comp_table[k].idx;
! 202: i2 = i1 + cp1255_comp_table[k].len-1;
! 203: if (last_wc >= cp1255_comp_table_data[i1].base
! 204: && last_wc <= cp1255_comp_table_data[i2].base) {
! 205: unsigned int i;
! 206: for (;;) {
! 207: i = (i1+i2)>>1;
! 208: if (last_wc == cp1255_comp_table_data[i].base)
! 209: break;
! 210: if (last_wc < cp1255_comp_table_data[i].base) {
! 211: if (i1 == i)
! 212: goto not_combining;
! 213: i2 = i;
! 214: } else {
! 215: if (i1 != i)
! 216: i1 = i;
! 217: else {
! 218: i = i2;
! 219: if (last_wc == cp1255_comp_table_data[i].base)
! 220: break;
! 221: goto not_combining;
! 222: }
! 223: }
! 224: }
! 225: last_wc = cp1255_comp_table_data[i].composed;
! 226: if (last_wc == 0xfb2a || last_wc == 0xfb2b || last_wc == 0xfb49) {
! 227: /* Buffer the combined character. */
! 228: conv->istate = last_wc;
! 229: return RET_TOOFEW(1);
! 230: } else {
! 231: /* Output the combined character. */
! 232: conv->istate = 0;
! 233: *pwc = (ucs4_t) last_wc;
! 234: return 1;
! 235: }
! 236: }
! 237: }
! 238: not_combining:
! 239: /* Output the buffered character. */
! 240: conv->istate = 0;
! 241: *pwc = (ucs4_t) last_wc;
! 242: return 0; /* Don't advance the input pointer. */
! 243: }
! 244: if ((wc >= 0x05d0 && wc <= 0x05ea && ((0x07db5f7f >> (wc - 0x05d0)) & 1))
! 245: || wc == 0x05f2) {
! 246: /* wc is a possible match in cp1255_comp_table_data. Buffer it. */
! 247: conv->istate = wc;
! 248: return RET_TOOFEW(1);
! 249: } else {
! 250: /* Output wc immediately. */
! 251: *pwc = (ucs4_t) wc;
! 252: return 1;
! 253: }
! 254: }
! 255:
! 256: #define cp1255_flushwc normal_flushwc
! 257:
! 258: static const unsigned char cp1255_page00[88] = {
! 259: 0xa0, 0xa1, 0xa2, 0xa3, 0x00, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
! 260: 0xa8, 0xa9, 0x00, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
! 261: 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
! 262: 0xb8, 0xb9, 0x00, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
! 263: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc0-0xc7 */
! 264: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
! 265: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, /* 0xd0-0xd7 */
! 266: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8-0xdf */
! 267: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe0-0xe7 */
! 268: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8-0xef */
! 269: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xba, /* 0xf0-0xf7 */
! 270: };
! 271: static const unsigned char cp1255_page02[32] = {
! 272: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, /* 0xc0-0xc7 */
! 273: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
! 274: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0-0xd7 */
! 275: 0x00, 0x00, 0x00, 0x00, 0x98, 0x00, 0x00, 0x00, /* 0xd8-0xdf */
! 276: };
! 277: static const unsigned char cp1255_page05[72] = {
! 278: 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xb0-0xb7 */
! 279: 0xc8, 0xc9, 0x00, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xb8-0xbf */
! 280: 0xd0, 0xd1, 0xd2, 0xd3, 0x00, 0x00, 0x00, 0x00, /* 0xc0-0xc7 */
! 281: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
! 282: 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xd0-0xd7 */
! 283: 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xd8-0xdf */
! 284: 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xe0-0xe7 */
! 285: 0xf8, 0xf9, 0xfa, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8-0xef */
! 286: 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0x00, 0x00, 0x00, /* 0xf0-0xf7 */
! 287: };
! 288: static const unsigned char cp1255_page20[56] = {
! 289: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfd, 0xfe, /* 0x08-0x0f */
! 290: 0x00, 0x00, 0x00, 0x96, 0x97, 0x00, 0x00, 0x00, /* 0x10-0x17 */
! 291: 0x91, 0x92, 0x82, 0x00, 0x93, 0x94, 0x84, 0x00, /* 0x18-0x1f */
! 292: 0x86, 0x87, 0x95, 0x00, 0x00, 0x00, 0x85, 0x00, /* 0x20-0x27 */
! 293: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */
! 294: 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */
! 295: 0x00, 0x8b, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */
! 296: };
! 297:
! 298: static int
! 299: cp1255_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
! 300: {
! 301: unsigned char c = 0;
! 302: if (wc < 0x0080) {
! 303: *r = wc;
! 304: return 1;
! 305: }
! 306: else if (wc >= 0x00a0 && wc < 0x00f8)
! 307: c = cp1255_page00[wc-0x00a0];
! 308: else if (wc == 0x0192)
! 309: c = 0x83;
! 310: else if (wc >= 0x02c0 && wc < 0x02e0)
! 311: c = cp1255_page02[wc-0x02c0];
! 312: else if (wc >= 0x05b0 && wc < 0x05f8)
! 313: c = cp1255_page05[wc-0x05b0];
! 314: else if (wc >= 0x2008 && wc < 0x2040)
! 315: c = cp1255_page20[wc-0x2008];
! 316: else if (wc == 0x20aa)
! 317: c = 0xa4;
! 318: else if (wc == 0x20ac)
! 319: c = 0x80;
! 320: else if (wc == 0x2122)
! 321: c = 0x99;
! 322: if (c != 0) {
! 323: *r = c;
! 324: return 1;
! 325: }
! 326: /* Try canonical decomposition. */
! 327: {
! 328: /* Binary search through cp1255_decomp_table. */
! 329: unsigned int i1 = 0;
! 330: unsigned int i2 = sizeof(cp1255_decomp_table)/sizeof(cp1255_decomp_table[0])-1;
! 331: if (wc >= cp1255_decomp_table[i1].composed
! 332: && wc <= cp1255_decomp_table[i2].composed) {
! 333: unsigned int i;
! 334: for (;;) {
! 335: /* Here i2 - i1 > 0. */
! 336: i = (i1+i2)>>1;
! 337: if (wc == cp1255_decomp_table[i].composed)
! 338: break;
! 339: if (wc < cp1255_decomp_table[i].composed) {
! 340: if (i1 == i)
! 341: return RET_ILUNI;
! 342: /* Here i1 < i < i2. */
! 343: i2 = i;
! 344: } else {
! 345: /* Here i1 <= i < i2. */
! 346: if (i1 != i)
! 347: i1 = i;
! 348: else {
! 349: /* Here i2 - i1 = 1. */
! 350: i = i2;
! 351: if (wc == cp1255_decomp_table[i].composed)
! 352: break;
! 353: else
! 354: return RET_ILUNI;
! 355: }
! 356: }
! 357: }
! 358: /* Found a canonical decomposition. */
! 359: wc = cp1255_decomp_table[i].base;
! 360: /* wc is one of 0x05d0..0x05d6, 0x05d8..0x05dc, 0x05de, 0x05e0..0x05e1,
! 361: 0x05e3..0x05e4, 0x05e6..0x05ea, 0x05f2. */
! 362: c = cp1255_page05[wc-0x05b0];
! 363: if (cp1255_decomp_table[i].comb2 < 0) {
! 364: if (n < 2)
! 365: return RET_TOOSMALL;
! 366: r[0] = c;
! 367: r[1] = cp1255_comb_table[cp1255_decomp_table[i].comb1];
! 368: return 2;
! 369: } else {
! 370: if (n < 3)
! 371: return RET_TOOSMALL;
! 372: r[0] = c;
! 373: r[1] = cp1255_comb_table[cp1255_decomp_table[i].comb1];
! 374: r[2] = cp1255_comb_table[cp1255_decomp_table[i].comb2];
! 375: return 3;
! 376: }
! 377: }
! 378: }
! 379: return RET_ILUNI;
! 380: }
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