1: /*
2: * Copyright (C) 1999-2001, 2004, 2016 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, see <https://www.gnu.org/licenses/>.
18: */
19:
20: /*
21: * CP1255
22: */
23:
24: #include "flushwc.h"
25:
26: /* Combining characters used in Hebrew encoding CP1255. */
27:
28: /* Relevant combining characters:
29: 0x05b4, 0x05b7, 0x05b8, 0x05b9, 0x05bc, 0x05bf, 0x05c1, 0x05c2. */
30:
31: /* Composition tables for each of the relevant combining characters. */
32: static const struct { unsigned short base; unsigned short composed; } cp1255_comp_table_data[] = {
33: #define cp1255_comp_table05b4_idx 0
34: #define cp1255_comp_table05b4_len 1
35: { 0x05D9, 0xFB1D },
36: #define cp1255_comp_table05b7_idx (cp1255_comp_table05b4_idx+cp1255_comp_table05b4_len)
37: #define cp1255_comp_table05b7_len 2
38: { 0x05D0, 0xFB2E },
39: { 0x05F2, 0xFB1F },
40: #define cp1255_comp_table05b8_idx (cp1255_comp_table05b7_idx+cp1255_comp_table05b7_len)
41: #define cp1255_comp_table05b8_len 1
42: { 0x05D0, 0xFB2F },
43: #define cp1255_comp_table05b9_idx (cp1255_comp_table05b8_idx+cp1255_comp_table05b8_len)
44: #define cp1255_comp_table05b9_len 1
45: { 0x05D5, 0xFB4B },
46: #define cp1255_comp_table05bc_idx (cp1255_comp_table05b9_idx+cp1255_comp_table05b9_len)
47: #define cp1255_comp_table05bc_len 24
48: { 0x05D0, 0xFB30 },
49: { 0x05D1, 0xFB31 },
50: { 0x05D2, 0xFB32 },
51: { 0x05D3, 0xFB33 },
52: { 0x05D4, 0xFB34 },
53: { 0x05D5, 0xFB35 },
54: { 0x05D6, 0xFB36 },
55: { 0x05D8, 0xFB38 },
56: { 0x05D9, 0xFB39 },
57: { 0x05DA, 0xFB3A },
58: { 0x05DB, 0xFB3B },
59: { 0x05DC, 0xFB3C },
60: { 0x05DE, 0xFB3E },
61: { 0x05E0, 0xFB40 },
62: { 0x05E1, 0xFB41 },
63: { 0x05E3, 0xFB43 },
64: { 0x05E4, 0xFB44 },
65: { 0x05E6, 0xFB46 },
66: { 0x05E7, 0xFB47 },
67: { 0x05E8, 0xFB48 },
68: { 0x05E9, 0xFB49 },
69: { 0x05EA, 0xFB4A },
70: { 0xFB2A, 0xFB2C },
71: { 0xFB2B, 0xFB2D },
72: #define cp1255_comp_table05bf_idx (cp1255_comp_table05bc_idx+cp1255_comp_table05bc_len)
73: #define cp1255_comp_table05bf_len 3
74: { 0x05D1, 0xFB4C },
75: { 0x05DB, 0xFB4D },
76: { 0x05E4, 0xFB4E },
77: #define cp1255_comp_table05c1_idx (cp1255_comp_table05bf_idx+cp1255_comp_table05bf_len)
78: #define cp1255_comp_table05c1_len 2
79: { 0x05E9, 0xFB2A },
80: { 0xFB49, 0xFB2C },
81: #define cp1255_comp_table05c2_idx (cp1255_comp_table05c1_idx+cp1255_comp_table05c1_len)
82: #define cp1255_comp_table05c2_len 2
83: { 0x05E9, 0xFB2B },
84: { 0xFB49, 0xFB2D },
85: };
86: static const struct { unsigned int len; unsigned int idx; } cp1255_comp_table[] = {
87: { cp1255_comp_table05b4_len, cp1255_comp_table05b4_idx },
88: { cp1255_comp_table05b7_len, cp1255_comp_table05b7_idx },
89: { cp1255_comp_table05b8_len, cp1255_comp_table05b8_idx },
90: { cp1255_comp_table05b9_len, cp1255_comp_table05b9_idx },
91: { cp1255_comp_table05bc_len, cp1255_comp_table05bc_idx },
92: { cp1255_comp_table05bf_len, cp1255_comp_table05bf_idx },
93: { cp1255_comp_table05c1_len, cp1255_comp_table05c1_idx },
94: { cp1255_comp_table05c2_len, cp1255_comp_table05c2_idx },
95: };
96:
97: /* Decomposition table for the relevant Unicode characters. */
98: struct cp1255_decomp { unsigned short composed; unsigned short base; int comb1 : 8; signed int comb2 : 8; };
99: static const struct cp1255_decomp cp1255_decomp_table[] = {
100: { 0xFB1D, 0x05D9, 0, -1 },
101: { 0xFB1F, 0x05F2, 1, -1 },
102: { 0xFB2A, 0x05E9, 6, -1 },
103: { 0xFB2B, 0x05E9, 7, -1 },
104: { 0xFB2C, 0x05E9, 4, 6 },
105: { 0xFB2D, 0x05E9, 4, 7 },
106: { 0xFB2E, 0x05D0, 1, -1 },
107: { 0xFB2F, 0x05D0, 2, -1 },
108: { 0xFB30, 0x05D0, 4, -1 },
109: { 0xFB31, 0x05D1, 4, -1 },
110: { 0xFB32, 0x05D2, 4, -1 },
111: { 0xFB33, 0x05D3, 4, -1 },
112: { 0xFB34, 0x05D4, 4, -1 },
113: { 0xFB35, 0x05D5, 4, -1 },
114: { 0xFB36, 0x05D6, 4, -1 },
115: { 0xFB38, 0x05D8, 4, -1 },
116: { 0xFB39, 0x05D9, 4, -1 },
117: { 0xFB3A, 0x05DA, 4, -1 },
118: { 0xFB3B, 0x05DB, 4, -1 },
119: { 0xFB3C, 0x05DC, 4, -1 },
120: { 0xFB3E, 0x05DE, 4, -1 },
121: { 0xFB40, 0x05E0, 4, -1 },
122: { 0xFB41, 0x05E1, 4, -1 },
123: { 0xFB43, 0x05E3, 4, -1 },
124: { 0xFB44, 0x05E4, 4, -1 },
125: { 0xFB46, 0x05E6, 4, -1 },
126: { 0xFB47, 0x05E7, 4, -1 },
127: { 0xFB48, 0x05E8, 4, -1 },
128: { 0xFB49, 0x05E9, 4, -1 },
129: { 0xFB4A, 0x05EA, 4, -1 },
130: { 0xFB4B, 0x05D5, 3, -1 },
131: { 0xFB4C, 0x05D1, 5, -1 },
132: { 0xFB4D, 0x05DB, 5, -1 },
133: { 0xFB4E, 0x05E4, 5, -1 },
134: };
135:
136: static const unsigned char cp1255_comb_table[] = {
137: 0xc4, 0xc7, 0xc8, 0xc9, 0xcc, 0xcf, 0xd1, 0xd2,
138: };
139:
140: static const unsigned short cp1255_2uni[128] = {
141: /* 0x80 */
142: 0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
143: 0x02c6, 0x2030, 0xfffd, 0x2039, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
144: /* 0x90 */
145: 0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
146: 0x02dc, 0x2122, 0xfffd, 0x203a, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
147: /* 0xa0 */
148: 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x20aa, 0x00a5, 0x00a6, 0x00a7,
149: 0x00a8, 0x00a9, 0x00d7, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
150: /* 0xb0 */
151: 0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
152: 0x00b8, 0x00b9, 0x00f7, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,
153: /* 0xc0 */
154: 0x05b0, 0x05b1, 0x05b2, 0x05b3, 0x05b4, 0x05b5, 0x05b6, 0x05b7,
155: 0x05b8, 0x05b9, 0x05ba, 0x05bb, 0x05bc, 0x05bd, 0x05be, 0x05bf,
156: /* 0xd0 */
157: 0x05c0, 0x05c1, 0x05c2, 0x05c3, 0x05f0, 0x05f1, 0x05f2, 0x05f3,
158: 0x05f4, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
159: /* 0xe0 */
160: 0x05d0, 0x05d1, 0x05d2, 0x05d3, 0x05d4, 0x05d5, 0x05d6, 0x05d7,
161: 0x05d8, 0x05d9, 0x05da, 0x05db, 0x05dc, 0x05dd, 0x05de, 0x05df,
162: /* 0xf0 */
163: 0x05e0, 0x05e1, 0x05e2, 0x05e3, 0x05e4, 0x05e5, 0x05e6, 0x05e7,
164: 0x05e8, 0x05e9, 0x05ea, 0xfffd, 0xfffd, 0x200e, 0x200f, 0xfffd,
165: };
166:
167: /* In the CP1255 to Unicode direction, the state contains a buffered
168: character, or 0 if none. */
169:
170: static int
171: cp1255_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
172: {
173: unsigned char c = *s;
174: unsigned short wc;
175: unsigned short last_wc;
176: if (c < 0x80) {
177: wc = c;
178: } else {
179: wc = cp1255_2uni[c-0x80];
180: if (wc == 0xfffd)
181: return RET_ILSEQ;
182: }
183: last_wc = conv->istate;
184: if (last_wc) {
185: if (wc >= 0x05b0 && wc < 0x05c5) {
186: /* See whether last_wc and wc can be combined. */
187: unsigned int k;
188: unsigned int i1, i2;
189: switch (wc) {
190: case 0x05b4: k = 0; break;
191: case 0x05b7: k = 1; break;
192: case 0x05b8: k = 2; break;
193: case 0x05b9: k = 3; break;
194: case 0x05bc: k = 4; break;
195: case 0x05bf: k = 5; break;
196: case 0x05c1: k = 6; break;
197: case 0x05c2: k = 7; break;
198: default: goto not_combining;
199: }
200: i1 = cp1255_comp_table[k].idx;
201: i2 = i1 + cp1255_comp_table[k].len-1;
202: if (last_wc >= cp1255_comp_table_data[i1].base
203: && last_wc <= cp1255_comp_table_data[i2].base) {
204: unsigned int i;
205: for (;;) {
206: i = (i1+i2)>>1;
207: if (last_wc == cp1255_comp_table_data[i].base)
208: break;
209: if (last_wc < cp1255_comp_table_data[i].base) {
210: if (i1 == i)
211: goto not_combining;
212: i2 = i;
213: } else {
214: if (i1 != i)
215: i1 = i;
216: else {
217: i = i2;
218: if (last_wc == cp1255_comp_table_data[i].base)
219: break;
220: goto not_combining;
221: }
222: }
223: }
224: last_wc = cp1255_comp_table_data[i].composed;
225: if (last_wc == 0xfb2a || last_wc == 0xfb2b || last_wc == 0xfb49) {
226: /* Buffer the combined character. */
227: conv->istate = last_wc;
228: return RET_TOOFEW(1);
229: } else {
230: /* Output the combined character. */
231: conv->istate = 0;
232: *pwc = (ucs4_t) last_wc;
233: return 1;
234: }
235: }
236: }
237: not_combining:
238: /* Output the buffered character. */
239: conv->istate = 0;
240: *pwc = (ucs4_t) last_wc;
241: return 0; /* Don't advance the input pointer. */
242: }
243: if ((wc >= 0x05d0 && wc <= 0x05ea && ((0x07db5f7f >> (wc - 0x05d0)) & 1))
244: || wc == 0x05f2) {
245: /* wc is a possible match in cp1255_comp_table_data. Buffer it. */
246: conv->istate = wc;
247: return RET_TOOFEW(1);
248: } else {
249: /* Output wc immediately. */
250: *pwc = (ucs4_t) wc;
251: return 1;
252: }
253: }
254:
255: #define cp1255_flushwc normal_flushwc
256:
257: static const unsigned char cp1255_page00[88] = {
258: 0xa0, 0xa1, 0xa2, 0xa3, 0x00, 0xa5, 0xa6, 0xa7, /* 0xa0-0xa7 */
259: 0xa8, 0xa9, 0x00, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
260: 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
261: 0xb8, 0xb9, 0x00, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, /* 0xb8-0xbf */
262: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc0-0xc7 */
263: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
264: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, /* 0xd0-0xd7 */
265: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8-0xdf */
266: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe0-0xe7 */
267: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8-0xef */
268: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xba, /* 0xf0-0xf7 */
269: };
270: static const unsigned char cp1255_page02[32] = {
271: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, /* 0xc0-0xc7 */
272: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
273: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0-0xd7 */
274: 0x00, 0x00, 0x00, 0x00, 0x98, 0x00, 0x00, 0x00, /* 0xd8-0xdf */
275: };
276: static const unsigned char cp1255_page05[72] = {
277: 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0xb0-0xb7 */
278: 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0xb8-0xbf */
279: 0xd0, 0xd1, 0xd2, 0xd3, 0x00, 0x00, 0x00, 0x00, /* 0xc0-0xc7 */
280: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
281: 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0xd0-0xd7 */
282: 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0xd8-0xdf */
283: 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 0xe0-0xe7 */
284: 0xf8, 0xf9, 0xfa, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8-0xef */
285: 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0x00, 0x00, 0x00, /* 0xf0-0xf7 */
286: };
287: static const unsigned char cp1255_page20[56] = {
288: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfd, 0xfe, /* 0x08-0x0f */
289: 0x00, 0x00, 0x00, 0x96, 0x97, 0x00, 0x00, 0x00, /* 0x10-0x17 */
290: 0x91, 0x92, 0x82, 0x00, 0x93, 0x94, 0x84, 0x00, /* 0x18-0x1f */
291: 0x86, 0x87, 0x95, 0x00, 0x00, 0x00, 0x85, 0x00, /* 0x20-0x27 */
292: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */
293: 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */
294: 0x00, 0x8b, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */
295: };
296:
297: static int
298: cp1255_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
299: {
300: unsigned char c = 0;
301: if (wc < 0x0080) {
302: *r = wc;
303: return 1;
304: }
305: else if (wc >= 0x00a0 && wc < 0x00f8)
306: c = cp1255_page00[wc-0x00a0];
307: else if (wc == 0x0192)
308: c = 0x83;
309: else if (wc >= 0x02c0 && wc < 0x02e0)
310: c = cp1255_page02[wc-0x02c0];
311: else if (wc >= 0x05b0 && wc < 0x05f8)
312: c = cp1255_page05[wc-0x05b0];
313: else if (wc >= 0x2008 && wc < 0x2040)
314: c = cp1255_page20[wc-0x2008];
315: else if (wc == 0x20aa)
316: c = 0xa4;
317: else if (wc == 0x20ac)
318: c = 0x80;
319: else if (wc == 0x2122)
320: c = 0x99;
321: if (c != 0) {
322: *r = c;
323: return 1;
324: }
325: /* Try canonical decomposition. */
326: {
327: /* Binary search through cp1255_decomp_table. */
328: unsigned int i1 = 0;
329: unsigned int i2 = sizeof(cp1255_decomp_table)/sizeof(cp1255_decomp_table[0])-1;
330: if (wc >= cp1255_decomp_table[i1].composed
331: && wc <= cp1255_decomp_table[i2].composed) {
332: unsigned int i;
333: for (;;) {
334: /* Here i2 - i1 > 0. */
335: i = (i1+i2)>>1;
336: if (wc == cp1255_decomp_table[i].composed)
337: break;
338: if (wc < cp1255_decomp_table[i].composed) {
339: if (i1 == i)
340: return RET_ILUNI;
341: /* Here i1 < i < i2. */
342: i2 = i;
343: } else {
344: /* Here i1 <= i < i2. */
345: if (i1 != i)
346: i1 = i;
347: else {
348: /* Here i2 - i1 = 1. */
349: i = i2;
350: if (wc == cp1255_decomp_table[i].composed)
351: break;
352: else
353: return RET_ILUNI;
354: }
355: }
356: }
357: /* Found a canonical decomposition. */
358: wc = cp1255_decomp_table[i].base;
359: /* wc is one of 0x05d0..0x05d6, 0x05d8..0x05dc, 0x05de, 0x05e0..0x05e1,
360: 0x05e3..0x05e4, 0x05e6..0x05ea, 0x05f2. */
361: c = cp1255_page05[wc-0x05b0];
362: if (cp1255_decomp_table[i].comb2 < 0) {
363: if (n < 2)
364: return RET_TOOSMALL;
365: r[0] = c;
366: r[1] = cp1255_comb_table[cp1255_decomp_table[i].comb1];
367: return 2;
368: } else {
369: if (n < 3)
370: return RET_TOOSMALL;
371: r[0] = c;
372: r[1] = cp1255_comb_table[cp1255_decomp_table[i].comb1];
373: r[2] = cp1255_comb_table[cp1255_decomp_table[i].comb2];
374: return 3;
375: }
376: }
377: }
378: return RET_ILUNI;
379: }
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