1 /* 2 * Copyright (C) 1999-2001, 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 * GBK 23 */ 24 25 static int 26 ces_gbk_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) 27 { 28 unsigned char c = *s; 29 30 /* Code set 0 (ASCII or GB 1988-89) */ 31 if (c < 0x80) 32 return ascii_mbtowc(conv,pwc,s,n); 33 /* Code set 1 (GBK) */ 34 if (c >= 0x81 && c < 0xff) { 35 if (n < 2) 36 return RET_TOOFEW(0); 37 return gbk_mbtowc(conv,pwc,s,2); 38 } 39 return RET_ILSEQ; 40 } 41 42 static int 43 ces_gbk_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) 44 { 45 unsigned char buf[2]; 46 int ret; 47 48 /* Code set 0 (ASCII or GB 1988-89) */ 49 ret = ascii_wctomb(conv,r,wc,n); 50 if (ret != RET_ILUNI) 51 return ret; 52 53 /* Code set 1 (GBK) */ 54 ret = gbk_wctomb(conv,buf,wc,2); 55 if (ret != RET_ILUNI) { 56 if (ret != 2) abort(); 57 if (n < 2) 58 return RET_TOOSMALL; 59 r[0] = buf[0]; 60 r[1] = buf[1]; 61 return 2; 62 } 63 64 return RET_ILUNI; 65 } 66