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Annotation of embedaddon/libiconv/lib/cp949.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 1999-2001, 2005, 2007 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:  * CP949 is EUC-KR, extended with UHC (Unified Hangul Code).
        !            23:  *
        !            24:  * Some variants of CP949 (in JDK, Windows-2000, ICU) also add:
        !            25:  *
        !            26:  * 2. Private area mappings:
        !            27:  *
        !            28:  *        code           Unicode
        !            29:  *    0xC9{A1..FE}   U+E000..U+E05D
        !            30:  *    0xFE{A1..FE}   U+E05E..U+E0BB
        !            31:  *
        !            32:  * We add them too because, although there are backward compatibility problems
        !            33:  * when a character from a private area is moved to an official Unicode code
        !            34:  * point, they are useful for some people in practice.
        !            35:  */
        !            36: 
        !            37: #include "uhc_1.h"
        !            38: #include "uhc_2.h"
        !            39: 
        !            40: static int
        !            41: cp949_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
        !            42: {
        !            43:   unsigned char c = *s;
        !            44:   /* Code set 0 (ASCII) */
        !            45:   if (c < 0x80)
        !            46:     return ascii_mbtowc(conv,pwc,s,n);
        !            47:   /* UHC part 1 */
        !            48:   if (c >= 0x81 && c <= 0xa0)
        !            49:     return uhc_1_mbtowc(conv,pwc,s,n);
        !            50:   if (c >= 0xa1 && c < 0xff) {
        !            51:     if (n < 2)
        !            52:       return RET_TOOFEW(0);
        !            53:     {
        !            54:       unsigned char c2 = s[1];
        !            55:       if (c2 < 0xa1)
        !            56:         /* UHC part 2 */
        !            57:         return uhc_2_mbtowc(conv,pwc,s,n);
        !            58:       else if (c2 < 0xff && !(c == 0xa2 && c2 == 0xe8)) {
        !            59:         /* Code set 1 (KS C 5601-1992, now KS X 1001:1998) */
        !            60:         unsigned char buf[2];
        !            61:         int ret;
        !            62:         buf[0] = c-0x80; buf[1] = c2-0x80;
        !            63:         ret = ksc5601_mbtowc(conv,pwc,buf,2);
        !            64:         if (ret != RET_ILSEQ)
        !            65:           return ret;
        !            66:         /* User-defined characters */
        !            67:         if (c == 0xc9) {
        !            68:           *pwc = 0xe000 + (c2 - 0xa1);
        !            69:           return 2;
        !            70:         }
        !            71:         if (c == 0xfe) {
        !            72:           *pwc = 0xe05e + (c2 - 0xa1);
        !            73:           return 2;
        !            74:         }
        !            75:       }
        !            76:     }
        !            77:   }
        !            78:   return RET_ILSEQ;
        !            79: }
        !            80: 
        !            81: static int
        !            82: cp949_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
        !            83: {
        !            84:   unsigned char buf[2];
        !            85:   int ret;
        !            86: 
        !            87:   /* Code set 0 (ASCII) */
        !            88:   ret = ascii_wctomb(conv,r,wc,n);
        !            89:   if (ret != RET_ILUNI)
        !            90:     return ret;
        !            91: 
        !            92:   /* Code set 1 (KS C 5601-1992, now KS X 1001:1998) */
        !            93:   if (wc != 0x327e) {
        !            94:     ret = ksc5601_wctomb(conv,buf,wc,2);
        !            95:     if (ret != RET_ILUNI) {
        !            96:       if (ret != 2) abort();
        !            97:       if (n < 2)
        !            98:         return RET_TOOSMALL;
        !            99:       r[0] = buf[0]+0x80;
        !           100:       r[1] = buf[1]+0x80;
        !           101:       return 2;
        !           102:     }
        !           103:   }
        !           104: 
        !           105:   /* UHC */
        !           106:   if (wc >= 0xac00 && wc < 0xd7a4) {
        !           107:     if (wc < 0xc8a5)
        !           108:       return uhc_1_wctomb(conv,r,wc,n);
        !           109:     else
        !           110:       return uhc_2_wctomb(conv,r,wc,n);
        !           111:   }
        !           112: 
        !           113:   /* User-defined characters */
        !           114:   if (wc >= 0xe000 && wc < 0xe0bc) {
        !           115:     if (n < 2)
        !           116:       return RET_TOOSMALL;
        !           117:     if (wc < 0xe05e) {
        !           118:       r[0] = 0xc9;
        !           119:       r[1] = wc - 0xe000 + 0xa1;
        !           120:     } else {
        !           121:       r[0] = 0xfe;
        !           122:       r[1] = wc - 0xe05e + 0xa1;
        !           123:     }
        !           124:     return 2;
        !           125:   }
        !           126: 
        !           127:   return RET_ILUNI;
        !           128: }