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Annotation of embedaddon/libiconv/lib/ces_big5.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:  * BIG-5
        !            23:  */
        !            24: 
        !            25: static int
        !            26: ces_big5_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 (BIG5) */
        !            33:   if (c >= 0xa1 && c < 0xff) {
        !            34:     if (n < 2)
        !            35:       return RET_TOOFEW(0);
        !            36:     {
        !            37:       unsigned char c2 = s[1];
        !            38:       if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0xa1 && c2 < 0xff))
        !            39:         return big5_mbtowc(conv,pwc,s,2);
        !            40:       else
        !            41:         return RET_ILSEQ;
        !            42:     }
        !            43:   }
        !            44:   return RET_ILSEQ;
        !            45: }
        !            46: 
        !            47: static int
        !            48: ces_big5_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
        !            49: {
        !            50:   unsigned char buf[2];
        !            51:   int ret;
        !            52: 
        !            53:   /* Code set 0 (ASCII) */
        !            54:   ret = ascii_wctomb(conv,r,wc,n);
        !            55:   if (ret != RET_ILUNI)
        !            56:     return ret;
        !            57: 
        !            58:   /* Code set 1 (BIG5) */
        !            59:   ret = big5_wctomb(conv,buf,wc,2);
        !            60:   if (ret != RET_ILUNI) {
        !            61:     if (ret != 2) abort();
        !            62:     if (n < 2)
        !            63:       return RET_TOOSMALL;
        !            64:     r[0] = buf[0];
        !            65:     r[1] = buf[1];
        !            66:     return 2;
        !            67:   }
        !            68: 
        !            69:   return RET_ILUNI;
        !            70: }