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libiconv

    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:  * CP1252
   23:  */
   24: 
   25: static const unsigned short cp1252_2uni[32] = {
   26:   /* 0x80 */
   27:   0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
   28:   0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0xfffd, 0x017d, 0xfffd,
   29:   /* 0x90 */
   30:   0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
   31:   0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0xfffd, 0x017e, 0x0178,
   32: };
   33: 
   34: static int
   35: cp1252_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
   36: {
   37:   unsigned char c = *s;
   38:   if (c < 0x80 || c >= 0xa0) {
   39:     *pwc = (ucs4_t) c;
   40:     return 1;
   41:   }
   42:   else {
   43:     unsigned short wc = cp1252_2uni[c-0x80];
   44:     if (wc != 0xfffd) {
   45:       *pwc = (ucs4_t) wc;
   46:       return 1;
   47:     }
   48:   }
   49:   return RET_ILSEQ;
   50: }
   51: 
   52: static const unsigned char cp1252_page01[72] = {
   53:   0x00, 0x00, 0x8c, 0x9c, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */
   54:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58-0x5f */
   55:   0x8a, 0x9a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */
   56:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6f */
   57:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */
   58:   0x9f, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x9e, 0x00, /* 0x78-0x7f */
   59:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80-0x87 */
   60:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88-0x8f */
   61:   0x00, 0x00, 0x83, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90-0x97 */
   62: };
   63: static const unsigned char cp1252_page02[32] = {
   64:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, /* 0xc0-0xc7 */
   65:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8-0xcf */
   66:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0-0xd7 */
   67:   0x00, 0x00, 0x00, 0x00, 0x98, 0x00, 0x00, 0x00, /* 0xd8-0xdf */
   68: };
   69: static const unsigned char cp1252_page20[48] = {
   70:   0x00, 0x00, 0x00, 0x96, 0x97, 0x00, 0x00, 0x00, /* 0x10-0x17 */
   71:   0x91, 0x92, 0x82, 0x00, 0x93, 0x94, 0x84, 0x00, /* 0x18-0x1f */
   72:   0x86, 0x87, 0x95, 0x00, 0x00, 0x00, 0x85, 0x00, /* 0x20-0x27 */
   73:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28-0x2f */
   74:   0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30-0x37 */
   75:   0x00, 0x8b, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */
   76: };
   77: 
   78: static int
   79: cp1252_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
   80: {
   81:   unsigned char c = 0;
   82:   if (wc < 0x0080) {
   83:     *r = wc;
   84:     return 1;
   85:   }
   86:   else if (wc >= 0x00a0 && wc < 0x0100)
   87:     c = wc;
   88:   else if (wc >= 0x0150 && wc < 0x0198)
   89:     c = cp1252_page01[wc-0x0150];
   90:   else if (wc >= 0x02c0 && wc < 0x02e0)
   91:     c = cp1252_page02[wc-0x02c0];
   92:   else if (wc >= 0x2010 && wc < 0x2040)
   93:     c = cp1252_page20[wc-0x2010];
   94:   else if (wc == 0x20ac)
   95:     c = 0x80;
   96:   else if (wc == 0x2122)
   97:     c = 0x99;
   98:   if (c != 0) {
   99:     *r = c;
  100:     return 1;
  101:   }
  102:   return RET_ILUNI;
  103: }