Ruby 1.9.3p327(2012-11-10revision37606)
enc/iso_8859_10.c
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00001 /**********************************************************************
00002   iso8859_10.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_10_TO_LOWER_CASE(c) EncISO_8859_10_ToLowerCaseTable[c]
00033 #define ENC_IS_ISO_8859_10_CTYPE(code,ctype) \
00034   ((EncISO_8859_10_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
00035 
00036 static const UChar EncISO_8859_10_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', '\261', '\262', '\263', '\264', '\265', '\266', '\247',
00058   '\270', '\271', '\272', '\273', '\274', '\255', '\276', '\277',
00059   '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
00060   '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
00061   '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
00062   '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
00063   '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
00064   '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\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_10_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, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x00a0,
00093   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x01a0, 0x34a2, 0x34a2,
00094   0x00a0, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0,
00095   0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x30e2, 0x01a0, 0x30e2, 0x30e2,
00096   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
00097   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
00098   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2,
00099   0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 0x34a2, 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, 0x30e2
00104 };
00105 
00106 static int
00107 mbc_case_fold(OnigCaseFoldType flag,
00108                           const UChar** pp, const UChar* end ARG_UNUSED,
00109                           UChar* lower, OnigEncoding enc ARG_UNUSED)
00110 {
00111   const UChar* p = *pp;
00112 
00113   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
00114     *lower++ = 's';
00115     *lower   = 's';
00116     (*pp)++;
00117     return 2;
00118   }
00119 
00120   *lower = ENC_ISO_8859_10_TO_LOWER_CASE(*p);
00121   (*pp)++;
00122   return 1;
00123 }
00124 
00125 #if 0
00126 static int
00127 is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end)
00128 {
00129   int v;
00130   const UChar* p = *pp;
00131 
00132   if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
00133     (*pp)++;
00134     return TRUE;
00135   }
00136 
00137   (*pp)++;
00138   v = (EncISO_8859_10_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
00139   if ((v | BIT_CTYPE_LOWER) != 0) {
00140     return TRUE;
00141   }
00142 
00143   return (v != 0 ? TRUE : FALSE);
00144 }
00145 #endif
00146 
00147 static int
00148 is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
00149 {
00150   if (code < 256)
00151     return ENC_IS_ISO_8859_10_CTYPE(code, ctype);
00152   else
00153     return FALSE;
00154 }
00155 
00156 static const OnigPairCaseFoldCodes CaseFoldMap[] = {
00157  { 0xa1, 0xb1 },
00158  { 0xa2, 0xb2 },
00159  { 0xa3, 0xb3 },
00160  { 0xa4, 0xb4 },
00161  { 0xa5, 0xb5 },
00162  { 0xa6, 0xb6 },
00163  { 0xa8, 0xb8 },
00164  { 0xa9, 0xb9 },
00165  { 0xaa, 0xba },
00166  { 0xab, 0xbb },
00167  { 0xac, 0xbc },
00168  { 0xae, 0xbe },
00169  { 0xaf, 0xbf },
00170 
00171  { 0xc0, 0xe0 },
00172  { 0xc1, 0xe1 },
00173  { 0xc2, 0xe2 },
00174  { 0xc3, 0xe3 },
00175  { 0xc4, 0xe4 },
00176  { 0xc5, 0xe5 },
00177  { 0xc6, 0xe6 },
00178  { 0xc7, 0xe7 },
00179  { 0xc8, 0xe8 },
00180  { 0xc9, 0xe9 },
00181  { 0xca, 0xea },
00182  { 0xcb, 0xeb },
00183  { 0xcc, 0xec },
00184  { 0xcd, 0xed },
00185  { 0xce, 0xee },
00186  { 0xcf, 0xef },
00187 
00188  { 0xd0, 0xf0 },
00189  { 0xd1, 0xf1 },
00190  { 0xd2, 0xf2 },
00191  { 0xd3, 0xf3 },
00192  { 0xd4, 0xf4 },
00193  { 0xd5, 0xf5 },
00194  { 0xd6, 0xf6 },
00195  { 0xd7, 0xf7 },
00196  { 0xd8, 0xf8 },
00197  { 0xd9, 0xf9 },
00198  { 0xda, 0xfa },
00199  { 0xdb, 0xfb },
00200  { 0xdc, 0xfc },
00201  { 0xdd, 0xfd },
00202  { 0xde, 0xfe }
00203 };
00204 
00205 static int
00206 apply_all_case_fold(OnigCaseFoldType flag,
00207                                OnigApplyAllCaseFoldFunc f, void* arg,
00208                                OnigEncoding enc ARG_UNUSED)
00209 {
00210   return onigenc_apply_all_case_fold_with_map(
00211              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
00212              flag, f, arg);
00213 }
00214 
00215 static int
00216 get_case_fold_codes_by_str(OnigCaseFoldType flag,
00217                                        const OnigUChar* p, const OnigUChar* end,
00218                                        OnigCaseFoldCodeItem items[],
00219                                        OnigEncoding enc ARG_UNUSED)
00220 {
00221   return onigenc_get_case_fold_codes_by_str_with_map(
00222              sizeof(CaseFoldMap)/sizeof(OnigPairCaseFoldCodes), CaseFoldMap, 1,
00223              flag, p, end, items);
00224 }
00225 
00226 OnigEncodingDefine(iso_8859_10, ISO_8859_10) = {
00227   onigenc_single_byte_mbc_enc_len,
00228   "ISO-8859-10", /* name */
00229   1,             /* max enc length */
00230   1,             /* min enc length */
00231   onigenc_is_mbc_newline_0x0a,
00232   onigenc_single_byte_mbc_to_code,
00233   onigenc_single_byte_code_to_mbclen,
00234   onigenc_single_byte_code_to_mbc,
00235   mbc_case_fold,
00236   apply_all_case_fold,
00237   get_case_fold_codes_by_str,
00238   onigenc_minimum_property_name_to_ctype,
00239   is_code_ctype,
00240   onigenc_not_support_get_ctype_code_range,
00241   onigenc_single_byte_left_adjust_char_head,
00242   onigenc_always_true_is_allowed_reverse_match
00243 };
00244 ENC_ALIAS("ISO8859-10", "ISO-8859-10")
00245