Return to dec_hanyu.h CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libiconv / lib

Annotation of embedaddon/libiconv/lib/dec_hanyu.h, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2001, 2005 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:  * DEC-HANYU
                     23:  */
                     24: 
                     25: static int
                     26: dec_hanyu_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
                     27: {
                     28:   unsigned char c = *s;
                     29:   /* Code set 0 (ASCII) */
                     30:   if (c < 0x80)
                     31:     return ascii_mbtowc(conv,pwc,s,n);
                     32:   /* Code set 1 (CNS 11643-1992 Plane 1),
                     33:      Code set 2 (CNS 11643-1992 Plane 2),
                     34:      Code set 3 (CNS 11643-1992 Plane 3) */
                     35:   if (c >= 0xa1 && c < 0xff) {
                     36:     if (n < 2)
                     37:       return RET_TOOFEW(0);
                     38:     {
                     39:       unsigned char c2 = s[1];
                     40:       if (c == 0xc2 && c2 == 0xcb) {
                     41:         if (n < 4)
                     42:           return RET_TOOFEW(0);
                     43:         if (s[2] >= 0xa1 && s[2] < 0xff && s[3] >= 0xa1 && s[3] < 0xff) {
                     44:           unsigned char buf[2];
                     45:           int ret;
                     46:           buf[0] = s[2]-0x80; buf[1] = s[3]-0x80;
                     47:           ret = cns11643_3_mbtowc(conv,pwc,buf,2);
                     48:           if (ret != RET_ILSEQ) {
                     49:             if (ret != 2) abort();
                     50:             return 4;
                     51:           }
                     52:         }
                     53:       } else if (c2 >= 0xa1 && c2 < 0xff) {
                     54:         if (c != 0xc2 || c2 < 0xc2) {
                     55:           unsigned char buf[2];
                     56:           buf[0] = c-0x80; buf[1] = c2-0x80;
                     57:           return cns11643_1_mbtowc(conv,pwc,buf,2);
                     58:         }
                     59:       } else if (c2 >= 0x21 && c2 < 0x7f) {
                     60:         unsigned char buf[2];
                     61:         buf[0] = c-0x80; buf[1] = c2;
                     62:         return cns11643_2_mbtowc(conv,pwc,buf,2);
                     63:       }
                     64:     }
                     65:   }
                     66:   return RET_ILSEQ;
                     67: }
                     68: 
                     69: static int
                     70: dec_hanyu_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
                     71: {
                     72:   unsigned char buf[3];
                     73:   int ret;
                     74: 
                     75:   /* Code set 0 (ASCII) */
                     76:   ret = ascii_wctomb(conv,r,wc,n);
                     77:   if (ret != RET_ILUNI)
                     78:     return ret;
                     79: 
                     80:   ret = cns11643_wctomb(conv,buf,wc,3);
                     81:   if (ret != RET_ILUNI) {
                     82:     if (ret != 3) abort();
                     83: 
                     84:     /* Code set 1 (CNS 11643-1992 Plane 1) */
                     85:     if (buf[0] == 1 && (buf[1] != 0x42 || buf[2] < 0x42)) {
                     86:       if (n < 2)
                     87:         return RET_TOOSMALL;
                     88:       r[0] = buf[1]+0x80;
                     89:       r[1] = buf[2]+0x80;
                     90:       return 2;
                     91:     }
                     92: 
                     93:     /* Code set 2 (CNS 11643-1992 Plane 2) */
                     94:     if (buf[0] == 2) {
                     95:       if (n < 2)
                     96:         return RET_TOOSMALL;
                     97:       r[0] = buf[1]+0x80;
                     98:       r[1] = buf[2];
                     99:       return 2;
                    100:     }
                    101: 
                    102:     /* Code set 3 (CNS 11643-1992 Plane 3) */
                    103:     if (buf[0] == 3) {
                    104:       if (n < 4)
                    105:         return RET_TOOSMALL;
                    106:       r[0] = 0xc2;
                    107:       r[1] = 0xcb;
                    108:       r[2] = buf[1]+0x80;
                    109:       r[3] = buf[2]+0x80;
                    110:       return 4;
                    111:     }
                    112:   }
                    113: 
                    114:   return RET_ILUNI;
                    115: }