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Annotation of embedaddon/libiconv/lib/cp936ext.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 1999-2001 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:  * CP936 extensions
        !            23:  */
        !            24: 
        !            25: static const unsigned short cp936ext_2uni_pagea6[181-159] = {
        !            26:   /* 0xa6 */
        !            27:                                                           0xfe35,
        !            28:   0xfe36, 0xfe39, 0xfe3a, 0xfe3f, 0xfe40, 0xfe3d, 0xfe3e, 0xfe41,
        !            29:   0xfe42, 0xfe43, 0xfe44, 0xfffd, 0xfffd, 0xfe3b, 0xfe3c, 0xfe37,
        !            30:   0xfe38, 0xfe31, 0xfffd, 0xfe33, 0xfe34,
        !            31: };
        !            32: static const unsigned short cp936ext_2uni_pagea8[128-122] = {
        !            33:   /* 0xa8 */
        !            34:                   0x0251, 0xfffd, 0x0144, 0x0148, 0xfffd, 0x0261,
        !            35: };
        !            36: 
        !            37: static int
        !            38: cp936ext_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
        !            39: {
        !            40:   unsigned char c1 = s[0];
        !            41:   if ((c1 == 0xa6) || (c1 == 0xa8)) {
        !            42:     if (n >= 2) {
        !            43:       unsigned char c2 = s[1];
        !            44:       if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0x80 && c2 < 0xff)) {
        !            45:         unsigned int i = 190 * (c1 - 0x81) + (c2 - (c2 >= 0x80 ? 0x41 : 0x40));
        !            46:         unsigned short wc = 0xfffd;
        !            47:         if (i < 7410) {
        !            48:           if (i >= 7189 && i < 7211)
        !            49:             wc = cp936ext_2uni_pagea6[i-7189];
        !            50:         } else {
        !            51:           if (i >= 7532 && i < 7538)
        !            52:             wc = cp936ext_2uni_pagea8[i-7532];
        !            53:         }
        !            54:         if (wc != 0xfffd) {
        !            55:           *pwc = (ucs4_t) wc;
        !            56:           return 2;
        !            57:         }
        !            58:       }
        !            59:       return RET_ILSEQ;
        !            60:     }
        !            61:     return RET_TOOFEW(0);
        !            62:   }
        !            63:   return RET_ILSEQ;
        !            64: }
        !            65: 
        !            66: static const unsigned short cp936ext_page01[16] = {
        !            67:   0x0000, 0x0000, 0x0000, 0x0000, 0xa8bd, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
        !            68:   0xa8be, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x48-0x4f*/
        !            69: };
        !            70: static const unsigned short cp936ext_page02[24] = {
        !            71:   0x0000, 0xa8bb, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x50-0x57*/
        !            72:   0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x58-0x5f*/
        !            73:   0x0000, 0xa8c0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x60-0x67*/
        !            74: };
        !            75: static const unsigned short cp936ext_pagefe[24] = {
        !            76:   0x0000, 0xa6f2, 0x0000, 0xa6f4, 0xa6f5, 0xa6e0, 0xa6e1, 0xa6f0, /*0x30-0x37*/
        !            77:   0xa6f1, 0xa6e2, 0xa6e3, 0xa6ee, 0xa6ef, 0xa6e6, 0xa6e7, 0xa6e4, /*0x38-0x3f*/
        !            78:   0xa6e5, 0xa6e8, 0xa6e9, 0xa6ea, 0xa6eb, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
        !            79: };
        !            80: 
        !            81: static int
        !            82: cp936ext_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
        !            83: {
        !            84:   if (n >= 2) {
        !            85:     unsigned short c = 0;
        !            86:     if (wc >= 0x0140 && wc < 0x0150)
        !            87:       c = cp936ext_page01[wc-0x0140];
        !            88:     else if (wc >= 0x0250 && wc < 0x0268)
        !            89:       c = cp936ext_page02[wc-0x0250];
        !            90:     else if (wc >= 0xfe30 && wc < 0xfe48)
        !            91:       c = cp936ext_pagefe[wc-0xfe30];
        !            92:     if (c != 0) {
        !            93:       r[0] = (c >> 8); r[1] = (c & 0xff);
        !            94:       return 2;
        !            95:     }
        !            96:     return RET_ILUNI;
        !            97:   }
        !            98:   return RET_TOOSMALL;
        !            99: }