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enc/iso_8859_7.c

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00001 /**********************************************************************
00002   iso8859_7.c -  Oniguruma (regular expression library)
00003 **********************************************************************/
00004 /*-
00005  * Copyright (c) 2002-2007  K.Kosako  <sndgk393 AT ybb DOT ne DOT jp>
00006  * All rights reserved.
00007  *
00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions
00010  * are met:
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  */
00029 
00030 #include "regenc.h"
00031 
00032 #define ENC_ISO_8859_7_TO_LOWER_CASE(c) EncISO_8859_7_ToLowerCaseTable[c]
00033 #define ENC_IS_ISO_8859_7_CTYPE(code,ctype) \
00034   ((EncISO_8859_7_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
00035 
00036 static const UChar EncISO_8859_7_ToLowerCaseTable[256] = {
00037   '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
00038   '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
00039   '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
00040   '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
00041   '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
00042   '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
00043   '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
00044   '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
00045   '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
00046   '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
00047   '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
00048   '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
00049   '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
00050   '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
00051   '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
00052   '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
00053   '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
00054   '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
00055   '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
00056   '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
00057   '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
00058   '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
00059   '\260', '\261', '\262', '\263', '\264', '\265', '\334', '\267',
00060   '\335', '\336', '\337', '\273', '\374', '\275', '\375', '\376',
00061   '\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
00062   '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
00063   '\360', '\361', '\322', '\363', '\364', '\365', '\366', '\367',
00064   '\370', '\371', '\372', '\373', '\334', '\335', '\336', '\337',
00065   '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
00066   '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
00067   '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
00068   '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
00069 };
00070 
00071 static const unsigned short EncISO_8859_7_CtypeTable[256] = {
00072   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
00073   0x4008, 0x420c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
00074   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
00075   0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
00076   0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
00077   0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
00078   0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
00079   0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
00080   0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
00081   0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
00082   0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
00083   0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
00084   0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
00085   0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
00086   0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
00087   0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
00088   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
00089   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
00090   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
00091   0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008,
00092   0x0284, 0x01a0, 0x01a0, 0x00a0, 0x0000, 0x0000, 0x00a0, 0x00a0,
00093   0x00a0, 0x00a0, 0x0000, 0x01a0, 0x00a0, 0x01a0, 0x0000, 0x01a0,
00094   0x00a0, 0x00a0, 0x10a0, 0x10a0, 0x00a0, 0x00a0, 0x34a2, 0x01a0,
00095   0x34a2, 0x34a2, 0x34a2, 0x01a0, 0x34a2, 0x10a0, 0x34a2, 0x34a2,
00096   0x30e2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
00097   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
00098   0x34a2, 0x34a2, 0x0000, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
00099   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
00100   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
00101   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
00102   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2,
00103   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x0000
00104 };
00105 
00106 static int
00107 mbc_case_fold(OnigCaseFoldType flag,
00108               const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower,
00109               OnigEncoding enc ARG_UNUSED)
00110 {
00111   const UChar* p = *pp;
00112 
00113   *lower = ENC_ISO_8859_7_TO_LOWER_CASE(*p);
00114   (*pp)++;
00115   return 1;
00116 }
00117 
00118 #if 0
00119 static int
00120 is_mbc_ambiguous(OnigCaseFoldType flag,
00121                  const UChar** pp, const UChar* end)
00122 {
00123   int v;
00124   const UChar* p = *pp;
00125 
00126   (*pp)++;
00127   v = (EncISO_8859_7_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
00128   if ((v | BIT_CTYPE_LOWER) != 0) {
00129     if (*p == 0xc0 || *p == 0xe0)
00130       return FALSE;
00131     else
00132       return TRUE;
00133   }
00134 
00135   return (v != 0 ? TRUE : FALSE);
00136 }
00137 #endif
00138 
00139 static int
00140 is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
00141 {
00142   if (code < 256)
00143     return ENC_IS_ISO_8859_7_CTYPE(code, ctype);
00144   else
00145     return FALSE;
00146 }
00147 
00148 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
00149  { 0xb6, 0xdc },
00150  { 0xb8, 0xdd },
00151  { 0xb9, 0xde },
00152  { 0xba, 0xdf },
00153  { 0xbc, 0xfc },
00154  { 0xbe, 0xfd },
00155  { 0xbf, 0xfe },
00156 
00157  { 0xc1, 0xe1 },
00158  { 0xc2, 0xe2 },
00159  { 0xc3, 0xe3 },
00160  { 0xc4, 0xe4 },
00161  { 0xc5, 0xe5 },
00162  { 0xc6, 0xe6 },
00163  { 0xc7, 0xe7 },
00164  { 0xc8, 0xe8 },
00165  { 0xc9, 0xe9 },
00166  { 0xca, 0xea },
00167  { 0xcb, 0xeb },
00168  { 0xcc, 0xec },
00169  { 0xcd, 0xed },
00170  { 0xce, 0xee },
00171  { 0xcf, 0xef },
00172 
00173  { 0xd0, 0xf0 },
00174  { 0xd1, 0xf1 },
00175  { 0xd2, 0xf2 },
00176  { 0xd3, 0xf3 },
00177  { 0xd4, 0xf4 },
00178  { 0xd5, 0xf5 },
00179  { 0xd6, 0xf6 },
00180  { 0xd7, 0xf7 },
00181  { 0xd8, 0xf8 },
00182  { 0xd9, 0xf9 },
00183  { 0xda, 0xfa },
00184  { 0xdb, 0xfb }
00185 };
00186 
00187 static int
00188 apply_all_case_fold(OnigCaseFoldType flag,
00189                     OnigApplyAllCaseFoldFunc f, void* arg,
00190                     OnigEncoding enc ARG_UNUSED)
00191 {
00192   return onigenc_apply_all_case_fold_with_map(
00193              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 0,
00194              flag, f, arg);
00195 }
00196 
00197 static int
00198 get_case_fold_codes_by_str(OnigCaseFoldType flag,
00199                            const OnigUChar* p, const OnigUChar* end,
00200                            OnigCaseFoldCodeItem items[],
00201                            OnigEncoding enc ARG_UNUSED)
00202 {
00203   return onigenc_get_case_fold_codes_by_str_with_map(
00204              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 0,
00205              flag, p, end, items);
00206 }
00207 
00208 
00209 OnigEncodingDefine(iso_8859_7, ISO_8859_7) = {
00210   onigenc_single_byte_mbc_enc_len,
00211   "ISO-8859-7",  /* name */
00212   1,             /* max enc length */
00213   1,             /* min enc length */
00214   onigenc_is_mbc_newline_0x0a,
00215   onigenc_single_byte_mbc_to_code,
00216   onigenc_single_byte_code_to_mbclen,
00217   onigenc_single_byte_code_to_mbc,
00218   mbc_case_fold,
00219   apply_all_case_fold,
00220   get_case_fold_codes_by_str,
00221   onigenc_minimum_property_name_to_ctype,
00222   is_code_ctype,
00223   onigenc_not_support_get_ctype_code_range,
00224   onigenc_single_byte_left_adjust_char_head,
00225   onigenc_always_true_is_allowed_reverse_match
00226 };
00227 ENC_ALIAS("ISO8859-7", "ISO-8859-7")
00228 
00229 /*
00230  * Name: windows-1253
00231  * MIBenum: 2253
00232  * Link: http://www.iana.org/assignments/character-sets
00233  * Link: http://www.microsoft.com/globaldev/reference/sbcs/1253.mspx
00234  * Link: http://en.wikipedia.org/wiki/Windows-1253
00235  */
00236 ENC_REPLICATE("Windows-1253", "ISO-8859-7")
00237 ENC_ALIAS("CP1253", "Windows-1253")
00238 

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