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/*
 * Copyright (C) 1999-2001 Free Software Foundation, Inc.
 * This file is part of the GNU LIBICONV Library.
 *
 * The GNU LIBICONV Library is free software; you can redistribute it
 * and/or modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * The GNU LIBICONV Library is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
 * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA 02110-1301, USA.
 */

/*
 * CP1256
 */

static const unsigned short cp1256_2uni[128] = {
  /* 0x80 */
  0x20ac0x067e0x201a0x01920x201e0x20260x20200x2021,
  0x02c60x20300x06790x20390x01520x06860x06980x0688,
  /* 0x90 */
  0x06af0x20180x20190x201c0x201d0x20220x20130x2014,
  0x06a90x21220x06910x203a0x01530x200c0x200d0x06ba,
  /* 0xa0 */
  0x00a00x060c0x00a20x00a30x00a40x00a50x00a60x00a7,
  0x00a80x00a90x06be0x00ab0x00ac0x00ad0x00ae0x00af,
  /* 0xb0 */
  0x00b00x00b10x00b20x00b30x00b40x00b50x00b60x00b7,
  0x00b80x00b90x061b0x00bb0x00bc0x00bd0x00be0x061f,
  /* 0xc0 */
  0x06c10x06210x06220x06230x06240x06250x06260x0627,
  0x06280x06290x062a0x062b0x062c0x062d0x062e0x062f,
  /* 0xd0 */
  0x06300x06310x06320x06330x06340x06350x06360x00d7,
  0x06370x06380x06390x063a0x06400x06410x06420x0643,
  /* 0xe0 */
  0x00e00x06440x00e20x06450x06460x06470x06480x00e7,
  0x00e80x00e90x00ea0x00eb0x06490x064a0x00ee0x00ef,
  /* 0xf0 */
  0x064b0x064c0x064d0x064e0x00f40x064f0x06500x00f7,
  0x06510x00f90x06520x00fb0x00fc0x200e0x200f0x06d2,
};

static int
cp1256_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
{
  unsigned char c = *s;
  if (c < 0x80)
    *pwc = (ucs4_t) c;
  else
    *pwc = (ucs4_t) cp1256_2uni[c-0x80];
  return 1;
}

static const unsigned char cp1256_page00[96] = {
  0xa00x000xa20xa30xa40xa50xa60xa7/* 0xa0-0xa7 */
  0xa80xa90x000xab0xac0xad0xae0xaf/* 0xa8-0xaf */
  0xb00xb10xb20xb30xb40xb50xb60xb7/* 0xb0-0xb7 */
  0xb80xb90x000xbb0xbc0xbd0xbe0x00/* 0xb8-0xbf */
  0x000x000x000x000x000x000x000x00/* 0xc0-0xc7 */
  0x000x000x000x000x000x000x000x00/* 0xc8-0xcf */
  0x000x000x000x000x000x000x000xd7/* 0xd0-0xd7 */
  0x000x000x000x000x000x000x000x00/* 0xd8-0xdf */
  0xe00x000xe20x000x000x000x000xe7/* 0xe0-0xe7 */
  0xe80xe90xea0xeb0x000x000xee0xef/* 0xe8-0xef */
  0x000x000x000x000xf40x000x000xf7/* 0xf0-0xf7 */
  0x000xf90x000xfb0xfc0x000x000x00/* 0xf8-0xff */
};
static const unsigned char cp1256_page01[72] = {
  0x000x000x8c0x9c0x000x000x000x00/* 0x50-0x57 */
  0x000x000x000x000x000x000x000x00/* 0x58-0x5f */
  0x000x000x000x000x000x000x000x00/* 0x60-0x67 */
  0x000x000x000x000x000x000x000x00/* 0x68-0x6f */
  0x000x000x000x000x000x000x000x00/* 0x70-0x77 */
  0x000x000x000x000x000x000x000x00/* 0x78-0x7f */
  0x000x000x000x000x000x000x000x00/* 0x80-0x87 */
  0x000x000x000x000x000x000x000x00/* 0x88-0x8f */
  0x000x000x830x000x000x000x000x00/* 0x90-0x97 */
};
static const unsigned char cp1256_page06[208] = {
  0x000x000x000x000xa10x000x000x00/* 0x08-0x0f */
  0x000x000x000x000x000x000x000x00/* 0x10-0x17 */
  0x000x000x000xba0x000x000x000xbf/* 0x18-0x1f */
  0x000xc10xc20xc30xc40xc50xc60xc7/* 0x20-0x27 */
  0xc80xc90xca0xcb0xcc0xcd0xce0xcf/* 0x28-0x2f */
  0xd00xd10xd20xd30xd40xd50xd60xd8/* 0x30-0x37 */
  0xd90xda0xdb0x000x000x000x000x00/* 0x38-0x3f */
  0xdc0xdd0xde0xdf0xe10xe30xe40xe5/* 0x40-0x47 */
  0xe60xec0xed0xf00xf10xf20xf30xf5/* 0x48-0x4f */
  0xf60xf80xfa0x000x000x000x000x00/* 0x50-0x57 */
  0x000x000x000x000x000x000x000x00/* 0x58-0x5f */
  0x000x000x000x000x000x000x000x00/* 0x60-0x67 */
  0x000x000x000x000x000x000x000x00/* 0x68-0x6f */
  0x000x000x000x000x000x000x000x00/* 0x70-0x77 */
  0x000x8a0x000x000x000x000x810x00/* 0x78-0x7f */
  0x000x000x000x000x000x000x8d0x00/* 0x80-0x87 */
  0x8f0x000x000x000x000x000x000x00/* 0x88-0x8f */
  0x000x9a0x000x000x000x000x000x00/* 0x90-0x97 */
  0x8e0x000x000x000x000x000x000x00/* 0x98-0x9f */
  0x000x000x000x000x000x000x000x00/* 0xa0-0xa7 */
  0x000x980x000x000x000x000x000x90/* 0xa8-0xaf */
  0x000x000x000x000x000x000x000x00/* 0xb0-0xb7 */
  0x000x000x9f0x000x000x000xaa0x00/* 0xb8-0xbf */
  0x000xc00x000x000x000x000x000x00/* 0xc0-0xc7 */
  0x000x000x000x000x000x000x000x00/* 0xc8-0xcf */
  0x000x000xff0x000x000x000x000x00/* 0xd0-0xd7 */
};
static const unsigned char cp1256_page20[56] = {
  0x000x000x000x000x9d0x9e0xfd0xfe/* 0x08-0x0f */
  0x000x000x000x960x970x000x000x00/* 0x10-0x17 */
  0x910x920x820x000x930x940x840x00/* 0x18-0x1f */
  0x860x870x950x000x000x000x850x00/* 0x20-0x27 */
  0x000x000x000x000x000x000x000x00/* 0x28-0x2f */
  0x890x000x000x000x000x000x000x00/* 0x30-0x37 */
  0x000x8b0x9b0x000x000x000x000x00/* 0x38-0x3f */
};

static int
cp1256_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
{
  unsigned char c = 0;
  if (wc < 0x0080) {
    *r = wc;
    return 1;
  }
  else if (wc >= 0x00a0 && wc < 0x0100)
    c = cp1256_page00[wc-0x00a0];
  else if (wc >= 0x0150 && wc < 0x0198)
    c = cp1256_page01[wc-0x0150];
  else if (wc == 0x02c6)
    c = 0x88;
  else if (wc >= 0x0608 && wc < 0x06d8)
    c = cp1256_page06[wc-0x0608];
  else if (wc >= 0x2008 && wc < 0x2040)
    c = cp1256_page20[wc-0x2008];
  else if (wc == 0x20ac)
    c = 0x80;
  else if (wc == 0x2122)
    c = 0x99;
  if (c != 0) {
    *r = c;
    return 1;
  }
  return RET_ILUNI;
}