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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:  * ISO-8859-6
   23:  */
   24: 
   25: static const unsigned short iso8859_6_2uni[96] = {
   26:   /* 0xa0 */
   27:   0x00a0, 0xfffd, 0xfffd, 0xfffd, 0x00a4, 0xfffd, 0xfffd, 0xfffd,
   28:   0xfffd, 0xfffd, 0xfffd, 0xfffd, 0x060c, 0x00ad, 0xfffd, 0xfffd,
   29:   /* 0xb0 */
   30:   0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
   31:   0xfffd, 0xfffd, 0xfffd, 0x061b, 0xfffd, 0xfffd, 0xfffd, 0x061f,
   32:   /* 0xc0 */
   33:   0xfffd, 0x0621, 0x0622, 0x0623, 0x0624, 0x0625, 0x0626, 0x0627,
   34:   0x0628, 0x0629, 0x062a, 0x062b, 0x062c, 0x062d, 0x062e, 0x062f,
   35:   /* 0xd0 */
   36:   0x0630, 0x0631, 0x0632, 0x0633, 0x0634, 0x0635, 0x0636, 0x0637,
   37:   0x0638, 0x0639, 0x063a, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
   38:   /* 0xe0 */
   39:   0x0640, 0x0641, 0x0642, 0x0643, 0x0644, 0x0645, 0x0646, 0x0647,
   40:   0x0648, 0x0649, 0x064a, 0x064b, 0x064c, 0x064d, 0x064e, 0x064f,
   41:   /* 0xf0 */
   42:   0x0650, 0x0651, 0x0652, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
   43:   0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
   44: };
   45: 
   46: static int
   47: iso8859_6_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
   48: {
   49:   unsigned char c = *s;
   50:   if (c < 0xa0) {
   51:     *pwc = (ucs4_t) c;
   52:     return 1;
   53:   }
   54:   else {
   55:     unsigned short wc = iso8859_6_2uni[c-0xa0];
   56:     if (wc != 0xfffd) {
   57:       *pwc = (ucs4_t) wc;
   58:       return 1;
   59:     }
   60:   }
   61:   return RET_ILSEQ;
   62: }
   63: 
   64: static const unsigned char iso8859_6_page00[16] = {
   65:   0xa0, 0x00, 0x00, 0x00, 0xa4, 0x00, 0x00, 0x00, /* 0xa0-0xa7 */
   66:   0x00, 0x00, 0x00, 0x00, 0x00, 0xad, 0x00, 0x00, /* 0xa8-0xaf */
   67: };
   68: static const unsigned char iso8859_6_page06[80] = {
   69:   0x00, 0x00, 0x00, 0x00, 0xac, 0x00, 0x00, 0x00, /* 0x08-0x0f */
   70:   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10-0x17 */
   71:   0x00, 0x00, 0x00, 0xbb, 0x00, 0x00, 0x00, 0xbf, /* 0x18-0x1f */
   72:   0x00, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 0x20-0x27 */
   73:   0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, /* 0x28-0x2f */
   74:   0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, /* 0x30-0x37 */
   75:   0xd8, 0xd9, 0xda, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38-0x3f */
   76:   0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, /* 0x40-0x47 */
   77:   0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, /* 0x48-0x4f */
   78:   0xf0, 0xf1, 0xf2, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */
   79: };
   80: 
   81: static int
   82: iso8859_6_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
   83: {
   84:   unsigned char c = 0;
   85:   if (wc < 0x00a0) {
   86:     *r = wc;
   87:     return 1;
   88:   }
   89:   else if (wc >= 0x00a0 && wc < 0x00b0)
   90:     c = iso8859_6_page00[wc-0x00a0];
   91:   else if (wc >= 0x0608 && wc < 0x0658)
   92:     c = iso8859_6_page06[wc-0x0608];
   93:   if (c != 0) {
   94:     *r = c;
   95:     return 1;
   96:   }
   97:   return RET_ILUNI;
   98: }