Annotation of embedaddon/libiconv/lib/cp950ext.h, revision 1.1.1.2
1.1 misho 1: /*
1.1.1.2 ! misho 2: * Copyright (C) 1999-2001, 2012, 2016 Free Software Foundation, Inc.
1.1 misho 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.
1.1.1.2 ! misho 17: * If not, see <https://www.gnu.org/licenses/>.
1.1 misho 18: */
19:
20: /*
21: * CP950 extensions
22: */
23:
24: static const unsigned short cp950ext_2uni_pagef9[157-116] = {
25: /* 0xf9 */
26: 0x7881, 0x92b9, 0x88cf, 0x58bb,
27: 0x6052, 0x7ca7, 0x5afa, 0x2554, 0x2566, 0x2557, 0x2560, 0x256c,
28: 0x2563, 0x255a, 0x2569, 0x255d, 0x2552, 0x2564, 0x2555, 0x255e,
29: 0x256a, 0x2561, 0x2558, 0x2567, 0x255b, 0x2553, 0x2565, 0x2556,
30: 0x255f, 0x256b, 0x2562, 0x2559, 0x2568, 0x255c, 0x2551, 0x2550,
31: 0x256d, 0x256e, 0x2570, 0x256f, 0x2593,
32: };
33:
34: static int
1.1.1.2 ! misho 35: cp950ext_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
1.1 misho 36: {
37: unsigned char c1 = s[0];
38: if ((c1 == 0xf9)) {
39: if (n >= 2) {
40: unsigned char c2 = s[1];
41: if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0xa1 && c2 < 0xff)) {
42: unsigned int i = 157 * (c1 - 0xa1) + (c2 - (c2 >= 0xa1 ? 0x62 : 0x40));
43: unsigned short wc = 0xfffd;
44: {
45: if (i >= 13932 && i < 13973)
46: wc = cp950ext_2uni_pagef9[i-13932];
47: }
48: if (wc != 0xfffd) {
49: *pwc = (ucs4_t) wc;
50: return 2;
51: }
52: }
53: return RET_ILSEQ;
54: }
55: return RET_TOOFEW(0);
56: }
57: return RET_ILSEQ;
58: }
59:
60: static const unsigned short cp950ext_2charset[41] = {
61: 0xf9f9, 0xf9f8, 0xf9e6, 0xf9ef, 0xf9dd, 0xf9e8, 0xf9f1, 0xf9df,
62: 0xf9ec, 0xf9f5, 0xf9e3, 0xf9ee, 0xf9f7, 0xf9e5, 0xf9e9, 0xf9f2,
63: 0xf9e0, 0xf9eb, 0xf9f4, 0xf9e2, 0xf9e7, 0xf9f0, 0xf9de, 0xf9ed,
64: 0xf9f6, 0xf9e4, 0xf9ea, 0xf9f3, 0xf9e1, 0xf9fa, 0xf9fb, 0xf9fd,
65: 0xf9fc, 0xf9fe, 0xf9d9, 0xf9dc, 0xf9da, 0xf9d6, 0xf9db, 0xf9d8,
66: 0xf9d7,
67: };
68:
69: static const Summary16 cp950ext_uni2indx_page25[10] = {
70: /* 0x2500 */
71: { 0, 0x0000 }, { 0, 0x0000 }, { 0, 0x0000 }, { 0, 0x0000 },
72: { 0, 0x0000 }, { 0, 0xffff }, { 16, 0xffff }, { 32, 0x0001 },
73: { 33, 0x0000 }, { 33, 0x0008 },
74: };
75: static const Summary16 cp950ext_uni2indx_page58[12] = {
76: /* 0x5800 */
77: { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 },
78: { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 },
79: { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0000 }, { 34, 0x0800 },
80: };
81: static const Summary16 cp950ext_uni2indx_page5a[16] = {
82: /* 0x5a00 */
83: { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 }, { 35, 0x0000 },
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, 0x0400 },
87: };
88: static const Summary16 cp950ext_uni2indx_page60[6] = {
89: /* 0x6000 */
90: { 36, 0x0000 }, { 36, 0x0000 }, { 36, 0x0000 }, { 36, 0x0000 },
91: { 36, 0x0000 }, { 36, 0x0004 },
92: };
93: static const Summary16 cp950ext_uni2indx_page78[9] = {
94: /* 0x7800 */
95: { 37, 0x0000 }, { 37, 0x0000 }, { 37, 0x0000 }, { 37, 0x0000 },
96: { 37, 0x0000 }, { 37, 0x0000 }, { 37, 0x0000 }, { 37, 0x0000 },
97: { 37, 0x0002 },
98: };
99: static const Summary16 cp950ext_uni2indx_page7c[11] = {
100: /* 0x7c00 */
101: { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0000 },
102: { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0000 },
103: { 38, 0x0000 }, { 38, 0x0000 }, { 38, 0x0080 },
104: };
105: static const Summary16 cp950ext_uni2indx_page88[13] = {
106: /* 0x8800 */
107: { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 },
108: { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 },
109: { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 }, { 39, 0x0000 },
110: { 39, 0x8000 },
111: };
112: static const Summary16 cp950ext_uni2indx_page92[12] = {
113: /* 0x9200 */
114: { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 },
115: { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 },
116: { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0000 }, { 40, 0x0200 },
117: };
118:
119: static int
1.1.1.2 ! misho 120: cp950ext_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
1.1 misho 121: {
122: if (n >= 2) {
123: const Summary16 *summary = NULL;
124: if (wc >= 0x2500 && wc < 0x25a0)
125: summary = &cp950ext_uni2indx_page25[(wc>>4)-0x250];
126: else if (wc >= 0x5800 && wc < 0x58c0)
127: summary = &cp950ext_uni2indx_page58[(wc>>4)-0x580];
128: else if (wc >= 0x5a00 && wc < 0x5b00)
129: summary = &cp950ext_uni2indx_page5a[(wc>>4)-0x5a0];
130: else if (wc >= 0x6000 && wc < 0x6060)
131: summary = &cp950ext_uni2indx_page60[(wc>>4)-0x600];
132: else if (wc >= 0x7800 && wc < 0x7890)
133: summary = &cp950ext_uni2indx_page78[(wc>>4)-0x780];
134: else if (wc >= 0x7c00 && wc < 0x7cb0)
135: summary = &cp950ext_uni2indx_page7c[(wc>>4)-0x7c0];
136: else if (wc >= 0x8800 && wc < 0x88d0)
137: summary = &cp950ext_uni2indx_page88[(wc>>4)-0x880];
138: else if (wc >= 0x9200 && wc < 0x92c0)
139: summary = &cp950ext_uni2indx_page92[(wc>>4)-0x920];
140: if (summary) {
141: unsigned short used = summary->used;
142: unsigned int i = wc & 0x0f;
143: if (used & ((unsigned short) 1 << i)) {
144: unsigned short c;
1.1.1.2 ! misho 145: /* Keep in 'used' only the bits 0..i-1. */
1.1 misho 146: used &= ((unsigned short) 1 << i) - 1;
1.1.1.2 ! misho 147: /* Add 'summary->indx' and the number of bits set in 'used'. */
1.1 misho 148: used = (used & 0x5555) + ((used & 0xaaaa) >> 1);
149: used = (used & 0x3333) + ((used & 0xcccc) >> 2);
150: used = (used & 0x0f0f) + ((used & 0xf0f0) >> 4);
151: used = (used & 0x00ff) + (used >> 8);
152: c = cp950ext_2charset[summary->indx + used];
153: r[0] = (c >> 8); r[1] = (c & 0xff);
154: return 2;
155: }
156: }
157: return RET_ILUNI;
158: }
159: return RET_TOOSMALL;
160: }
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