iso8859_15.h

libiconv是一个很不错的字符集转换库。程序接口也很简单

/*
 * 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., 59 Temple Place -
 * Suite 330, Boston, MA 02111-1307, USA.
 */

/*
 * ISO-8859-15
 */

static const unsigned short iso8859_15_2uni[32] = {
  /* 0xa0 */
  0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x20ac, 0x00a5, 0x0160, 0x00a7,
  0x0161, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
  /* 0xb0 */
  0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x017d, 0x00b5, 0x00b6, 0x00b7,
  0x017e, 0x00b9, 0x00ba, 0x00bb, 0x0152, 0x0153, 0x0178, 0x00bf,
};

static int
iso8859_15_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
{
  unsigned char c = *s;
  if (c >= 0xa0 && c < 0xc0)
    *pwc = (ucs4_t) iso8859_15_2uni[c-0xa0];
  else
    *pwc = (ucs4_t) c;
  return 1;
}

static const unsigned char iso8859_15_page00[32] = {
  0xa0, 0xa1, 0xa2, 0xa3, 0x00, 0xa5, 0x00, 0xa7, /* 0xa0-0xa7 */
  0x00, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* 0xa8-0xaf */
  0xb0, 0xb1, 0xb2, 0xb3, 0x00, 0xb5, 0xb6, 0xb7, /* 0xb0-0xb7 */
  0x00, 0xb9, 0xba, 0xbb, 0x00, 0x00, 0x00, 0xbf, /* 0xb8-0xbf */
};
static const unsigned char iso8859_15_page01[48] = {
  0x00, 0x00, 0xbc, 0xbd, 0x00, 0x00, 0x00, 0x00, /* 0x50-0x57 */
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58-0x5f */
  0xa6, 0xa8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60-0x67 */
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68-0x6f */
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70-0x77 */
  0xbe, 0x00, 0x00, 0x00, 0x00, 0xb4, 0xb8, 0x00, /* 0x78-0x7f */
};

static int
iso8859_15_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
{
  unsigned char c = 0;
  if (wc < 0x00a0) {
    *r = wc;
    return 1;
  }
  else if (wc >= 0x00a0 && wc < 0x00c0)
    c = iso8859_15_page00[wc-0x00a0];
  else if (wc >= 0x00c0 && wc < 0x0100)
    c = wc;
  else if (wc >= 0x0150 && wc < 0x0180)
    c = iso8859_15_page01[wc-0x0150];
  else if (wc == 0x20ac)
    c = 0xa4;
  if (c != 0) {
    *r = c;
    return 1;
  }
  return RET_ILUNI;
}