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Annotation of embedaddon/libiconv/lib/cp936ext.h, revision 1.1.1.2

1.1       misho       1: /*
1.1.1.2 ! misho       2:  * Copyright (C) 1999-2001, 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:  * CP936 extensions
                     22:  */
                     23: 
                     24: static const unsigned short cp936ext_2uni_pagea6[181-159] = {
                     25:   /* 0xa6 */
                     26:                                                           0xfe35,
                     27:   0xfe36, 0xfe39, 0xfe3a, 0xfe3f, 0xfe40, 0xfe3d, 0xfe3e, 0xfe41,
                     28:   0xfe42, 0xfe43, 0xfe44, 0xfffd, 0xfffd, 0xfe3b, 0xfe3c, 0xfe37,
                     29:   0xfe38, 0xfe31, 0xfffd, 0xfe33, 0xfe34,
                     30: };
                     31: static const unsigned short cp936ext_2uni_pagea8[128-122] = {
                     32:   /* 0xa8 */
                     33:                   0x0251, 0xfffd, 0x0144, 0x0148, 0xfffd, 0x0261,
                     34: };
                     35: 
                     36: static int
1.1.1.2 ! misho      37: cp936ext_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
1.1       misho      38: {
                     39:   unsigned char c1 = s[0];
                     40:   if ((c1 == 0xa6) || (c1 == 0xa8)) {
                     41:     if (n >= 2) {
                     42:       unsigned char c2 = s[1];
                     43:       if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0x80 && c2 < 0xff)) {
                     44:         unsigned int i = 190 * (c1 - 0x81) + (c2 - (c2 >= 0x80 ? 0x41 : 0x40));
                     45:         unsigned short wc = 0xfffd;
                     46:         if (i < 7410) {
                     47:           if (i >= 7189 && i < 7211)
                     48:             wc = cp936ext_2uni_pagea6[i-7189];
                     49:         } else {
                     50:           if (i >= 7532 && i < 7538)
                     51:             wc = cp936ext_2uni_pagea8[i-7532];
                     52:         }
                     53:         if (wc != 0xfffd) {
                     54:           *pwc = (ucs4_t) wc;
                     55:           return 2;
                     56:         }
                     57:       }
                     58:       return RET_ILSEQ;
                     59:     }
                     60:     return RET_TOOFEW(0);
                     61:   }
                     62:   return RET_ILSEQ;
                     63: }
                     64: 
                     65: static const unsigned short cp936ext_page01[16] = {
                     66:   0x0000, 0x0000, 0x0000, 0x0000, 0xa8bd, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
                     67:   0xa8be, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x48-0x4f*/
                     68: };
                     69: static const unsigned short cp936ext_page02[24] = {
                     70:   0x0000, 0xa8bb, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x50-0x57*/
                     71:   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x58-0x5f*/
                     72:   0x0000, 0xa8c0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x60-0x67*/
                     73: };
                     74: static const unsigned short cp936ext_pagefe[24] = {
                     75:   0x0000, 0xa6f2, 0x0000, 0xa6f4, 0xa6f5, 0xa6e0, 0xa6e1, 0xa6f0, /*0x30-0x37*/
                     76:   0xa6f1, 0xa6e2, 0xa6e3, 0xa6ee, 0xa6ef, 0xa6e6, 0xa6e7, 0xa6e4, /*0x38-0x3f*/
                     77:   0xa6e5, 0xa6e8, 0xa6e9, 0xa6ea, 0xa6eb, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
                     78: };
                     79: 
                     80: static int
1.1.1.2 ! misho      81: cp936ext_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
1.1       misho      82: {
                     83:   if (n >= 2) {
                     84:     unsigned short c = 0;
                     85:     if (wc >= 0x0140 && wc < 0x0150)
                     86:       c = cp936ext_page01[wc-0x0140];
                     87:     else if (wc >= 0x0250 && wc < 0x0268)
                     88:       c = cp936ext_page02[wc-0x0250];
                     89:     else if (wc >= 0xfe30 && wc < 0xfe48)
                     90:       c = cp936ext_pagefe[wc-0xfe30];
                     91:     if (c != 0) {
                     92:       r[0] = (c >> 8); r[1] = (c & 0xff);
                     93:       return 2;
                     94:     }
                     95:     return RET_ILUNI;
                     96:   }
                     97:   return RET_TOOSMALL;
                     98: }