lib/iso8859_6.h

   1 /*
   2  * Copyright (C) 1999-2000 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., 59 Temple Place -
  18  * Suite 330, Boston, MA 02111-1307, 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_ILSEQ;
  98 }