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Annotation of embedaddon/libiconv/lib/cp949.h, revision 1.1.1.2

1.1       misho       1: /*
1.1.1.2 ! misho       2:  * Copyright (C) 1999-2001, 2005, 2007, 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:  * CP949 is EUC-KR, extended with UHC (Unified Hangul Code).
                     22:  *
                     23:  * Some variants of CP949 (in JDK, Windows-2000, ICU) also add:
                     24:  *
                     25:  * 2. Private area mappings:
                     26:  *
                     27:  *        code           Unicode
                     28:  *    0xC9{A1..FE}   U+E000..U+E05D
                     29:  *    0xFE{A1..FE}   U+E05E..U+E0BB
                     30:  *
                     31:  * We add them too because, although there are backward compatibility problems
                     32:  * when a character from a private area is moved to an official Unicode code
                     33:  * point, they are useful for some people in practice.
                     34:  */
                     35: 
                     36: #include "uhc_1.h"
                     37: #include "uhc_2.h"
                     38: 
                     39: static int
1.1.1.2 ! misho      40: cp949_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
1.1       misho      41: {
                     42:   unsigned char c = *s;
                     43:   /* Code set 0 (ASCII) */
                     44:   if (c < 0x80)
                     45:     return ascii_mbtowc(conv,pwc,s,n);
                     46:   /* UHC part 1 */
                     47:   if (c >= 0x81 && c <= 0xa0)
                     48:     return uhc_1_mbtowc(conv,pwc,s,n);
                     49:   if (c >= 0xa1 && c < 0xff) {
                     50:     if (n < 2)
                     51:       return RET_TOOFEW(0);
                     52:     {
                     53:       unsigned char c2 = s[1];
                     54:       if (c2 < 0xa1)
                     55:         /* UHC part 2 */
                     56:         return uhc_2_mbtowc(conv,pwc,s,n);
                     57:       else if (c2 < 0xff && !(c == 0xa2 && c2 == 0xe8)) {
                     58:         /* Code set 1 (KS C 5601-1992, now KS X 1001:1998) */
                     59:         unsigned char buf[2];
                     60:         int ret;
                     61:         buf[0] = c-0x80; buf[1] = c2-0x80;
                     62:         ret = ksc5601_mbtowc(conv,pwc,buf,2);
                     63:         if (ret != RET_ILSEQ)
                     64:           return ret;
                     65:         /* User-defined characters */
                     66:         if (c == 0xc9) {
                     67:           *pwc = 0xe000 + (c2 - 0xa1);
                     68:           return 2;
                     69:         }
                     70:         if (c == 0xfe) {
                     71:           *pwc = 0xe05e + (c2 - 0xa1);
                     72:           return 2;
                     73:         }
                     74:       }
                     75:     }
                     76:   }
                     77:   return RET_ILSEQ;
                     78: }
                     79: 
                     80: static int
1.1.1.2 ! misho      81: cp949_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
1.1       misho      82: {
                     83:   unsigned char buf[2];
                     84:   int ret;
                     85: 
                     86:   /* Code set 0 (ASCII) */
                     87:   ret = ascii_wctomb(conv,r,wc,n);
                     88:   if (ret != RET_ILUNI)
                     89:     return ret;
                     90: 
                     91:   /* Code set 1 (KS C 5601-1992, now KS X 1001:1998) */
                     92:   if (wc != 0x327e) {
                     93:     ret = ksc5601_wctomb(conv,buf,wc,2);
                     94:     if (ret != RET_ILUNI) {
                     95:       if (ret != 2) abort();
                     96:       if (n < 2)
                     97:         return RET_TOOSMALL;
                     98:       r[0] = buf[0]+0x80;
                     99:       r[1] = buf[1]+0x80;
                    100:       return 2;
                    101:     }
                    102:   }
                    103: 
                    104:   /* UHC */
                    105:   if (wc >= 0xac00 && wc < 0xd7a4) {
                    106:     if (wc < 0xc8a5)
                    107:       return uhc_1_wctomb(conv,r,wc,n);
                    108:     else
                    109:       return uhc_2_wctomb(conv,r,wc,n);
                    110:   }
                    111: 
                    112:   /* User-defined characters */
                    113:   if (wc >= 0xe000 && wc < 0xe0bc) {
                    114:     if (n < 2)
                    115:       return RET_TOOSMALL;
                    116:     if (wc < 0xe05e) {
                    117:       r[0] = 0xc9;
                    118:       r[1] = wc - 0xe000 + 0xa1;
                    119:     } else {
                    120:       r[0] = 0xfe;
                    121:       r[1] = wc - 0xe05e + 0xa1;
                    122:     }
                    123:     return 2;
                    124:   }
                    125: 
                    126:   return RET_ILUNI;
                    127: }