text: /**********************************************************************
    iso8859_13.c -  Oniguruma (regular expression library)
  **********************************************************************/
  /*-
   * Copyright (c) 2002-2007  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #include "regenc.h"
  
  #define ENC_ISO_8859_13_TO_LOWER_CASE(c) EncISO_8859_13_ToLowerCaseTable[c]
  #define ENC_IS_ISO_8859_13_CTYPE(code,ctype) \
    ((EncISO_8859_13_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
  
  static const UChar EncISO_8859_13_ToLowerCaseTable[256] = {
    '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
    '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
    '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
    '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
    '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
    '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
    '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
    '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
    '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
    '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
    '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
    '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
    '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
    '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
    '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
    '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
    '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
    '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
    '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
    '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
    '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
    '\270', '\251', '\272', '\253', '\254', '\255', '\256', '\277',
    '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
    '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
    '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
    '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
    '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\327',
    '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\337',
    '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
    '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
    '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
    '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
  };
  
  static const unsigned short EncISO_8859_13_CtypeTable[256] = {
    0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
    0x4008, 0x420c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
    0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
    0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
    0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
    0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
    0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
    0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
    0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
    0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
    0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
    0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
    0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
    0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
    0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
    0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
    0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
    0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
    0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
    0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
    0x0284, 0x01a0, 0x00a0, 0x00a0, 0x00a0, 0x01a0, 0x00a0, 0x00a0,
    0x34a2, 0x00a0, 0x34a2, 0x01a0, 0x00a0, 0x01a0, 0x00a0, 0x34a2,
    0x00a0, 0x00a0, 0x10a0, 0x10a0, 0x01a0, 0x30e2, 0x00a0, 0x01a0,
    0x30e2, 0x10a0, 0x30e2, 0x01a0, 0x10a0, 0x10a0, 0x10a0, 0x30e2,
    0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
    0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
    0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x00a0,
    0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x30e2,
    0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
    0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
    0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x00a0,
    0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0
  };
  
  static int
  mbc_case_fold(OnigCaseFoldType flag,
  	      const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower)
  {
    const UChar* p = *pp;
  
    if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
      *lower++ = 's';
      *lower   = 's';
      (*pp)++;
      return 2;
    }
  
    *lower = ENC_ISO_8859_13_TO_LOWER_CASE(*p);
    (*pp)++;
    return 1;
  }
  
  #if 0
  static int
  is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end)
  {
    int v;
    const UChar* p = *pp;
  
    if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
      (*pp)++;
      return TRUE;
    }
  
    (*pp)++;
    v = (EncISO_8859_13_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
    if ((v | BIT_CTYPE_LOWER) != 0) {
      /* 0xdf, 0xb5 are lower case letter, but can't convert. */
      if (*p == 0xb5)
        return FALSE;
      else
        return TRUE;
    }
  
    return (v != 0 ? TRUE : FALSE);
  }
  #endif
  
  static int
  is_code_ctype(OnigCodePoint code, unsigned int ctype)
  {
    if (code < 256)
      return ENC_IS_ISO_8859_13_CTYPE(code, ctype);
    else
      return FALSE;
  }
  
  static const OnigPairCaseFoldCodes CaseFoldMap[] = {
   { 0xc0, 0xe0 },
   { 0xc1, 0xe1 },
   { 0xc2, 0xe2 },
   { 0xc3, 0xe3 },
   { 0xc4, 0xe4 },
   { 0xc5, 0xe5 },
   { 0xc6, 0xe6 },
   { 0xc7, 0xe7 },
   { 0xc8, 0xe8 },
   { 0xc9, 0xe9 },
   { 0xca, 0xea },
   { 0xcb, 0xeb },
   { 0xcc, 0xec },
   { 0xcd, 0xed },
   { 0xce, 0xee },
   { 0xcf, 0xef },
  
   { 0xd0, 0xf0 },
   { 0xd1, 0xf1 },
   { 0xd2, 0xf2 },
   { 0xd3, 0xf3 },
   { 0xd4, 0xf4 },
   { 0xd5, 0xf5 },
   { 0xd6, 0xf6 },
   { 0xd8, 0xf8 },
   { 0xd9, 0xf9 },
   { 0xda, 0xfa },
   { 0xdb, 0xfb },
   { 0xdc, 0xfc },
   { 0xdd, 0xfd },
   { 0xde, 0xfe }
  };
  
  static int
  apply_all_case_fold(OnigCaseFoldType flag,
  		    OnigApplyAllCaseFoldFunc f, void* arg)
  {
    return onigenc_apply_all_case_fold_with_map(
               sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
               flag, f, arg);
  }
  
  static int
  get_case_fold_codes_by_str(OnigCaseFoldType flag,
     const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
  {
    return onigenc_get_case_fold_codes_by_str_with_map(
  	     sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
  	     flag, p, end, items);
  }
  
  OnigEncodingType OnigEncodingISO_8859_13 = {
    onigenc_single_byte_mbc_enc_len,
    "ISO-8859-13",  /* name */
    1,             /* max enc length */
    1,             /* min enc length */
    onigenc_is_mbc_newline_0x0a,
    onigenc_single_byte_mbc_to_code,
    onigenc_single_byte_code_to_mbclen,
    onigenc_single_byte_code_to_mbc,
    mbc_case_fold,
    apply_all_case_fold,
    get_case_fold_codes_by_str,
    onigenc_minimum_property_name_to_ctype,
    is_code_ctype,
    onigenc_not_support_get_ctype_code_range,
    onigenc_single_byte_left_adjust_char_head,
    onigenc_always_true_is_allowed_reverse_match
  };
  