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 * EUC-CN 23 */ 24 25 static int 26 euc_cn_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) 27 { 28 unsigned char c = *s; 29 /* Code set 0 (ASCII or GB 1988-89) */ 30 if (c < 0x80) 31 return ascii_mbtowc(conv,pwc,s,n); 32 /* Code set 1 (GB 2312-1980) */ 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 >= 0xa1 && c2 < 0xff) { 39 unsigned char buf[2]; 40 buf[0] = c-0x80; buf[1] = c2-0x80; 41 return gb2312_mbtowc(conv,pwc,buf,2); 42 } else 43 return RET_ILSEQ; 44 } 45 } 46 return RET_ILSEQ; 47 } 48 49 static int 50 euc_cn_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) 51 { 52 unsigned char buf[2]; 53 int ret; 54 55 /* Code set 0 (ASCII or GB 1988-89) */ 56 ret = ascii_wctomb(conv,r,wc,n); 57 if (ret != RET_ILUNI) 58 return ret; 59 60 /* Code set 1 (GB 2312-1980) */ 61 ret = gb2312_wctomb(conv,buf,wc,2); 62 if (ret != RET_ILUNI) { 63 if (ret != 2) abort(); 64 if (n < 2) 65 return RET_TOOSMALL; 66 r[0] = buf[0]+0x80; 67 r[1] = buf[1]+0x80; 68 return 2; 69 } 70 71 return RET_ILUNI; 72 } 73