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ruby/enc/iso_8859_1.c

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/**********************************************************************
iso8859_1.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"
#include "iso_8859.h"
#define ENC_IS_ISO_8859_1_CTYPE(code,ctype) \
((EncISO_8859_1_CtypeTable[code] & CTYPE_TO_BIT(ctype)) != 0)
static const unsigned short EncISO_8859_1_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, 0x00a0, 0x00a0, 0x00a0,
0x00a0, 0x00a0, 0x30e2, 0x01a0, 0x00a0, 0x01a0, 0x00a0, 0x00a0,
0x00a0, 0x00a0, 0x10a0, 0x10a0, 0x00a0, 0x30e2, 0x00a0, 0x01a0,
0x00a0, 0x10a0, 0x30e2, 0x01a0, 0x10a0, 0x10a0, 0x10a0, 0x01a0,
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, 0x30e2
};
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,
OnigEncoding enc ARG_UNUSED)
{
return onigenc_apply_all_case_fold_with_map(
numberof(CaseFoldMap), CaseFoldMap, 1,
flag, f, arg);
}
static int
get_case_fold_codes_by_str(OnigCaseFoldType flag,
const OnigUChar* p, const OnigUChar* end,
OnigCaseFoldCodeItem items[],
OnigEncoding enc ARG_UNUSED)
{
if (0x41 <= *p && *p <= 0x5a) {
items[0].byte_len = 1;
items[0].code_len = 1;
items[0].code[0] = (OnigCodePoint )(*p + 0x20);
if (*p == 0x53 && end > p + 1
&& (*(p+1) == 0x53 || *(p+1) == 0x73)) { /* SS */
items[1].byte_len = 2;
items[1].code_len = 1;
items[1].code[0] = (OnigCodePoint )SHARP_s;
return 2;
}
else
return 1;
}
else if (0x61 <= *p && *p <= 0x7a) {
items[0].byte_len = 1;
items[0].code_len = 1;
items[0].code[0] = (OnigCodePoint )(*p - 0x20);
if (*p == 0x73 && end > p + 1
&& (*(p+1) == 0x73 || *(p+1) == 0x53)) { /* ss */
items[1].byte_len = 2;
items[1].code_len = 1;
items[1].code[0] = (OnigCodePoint )SHARP_s;
return 2;
}
else
return 1;
}
else if (0xc0 <= *p && *p <= 0xcf) {
items[0].byte_len = 1;
items[0].code_len = 1;
items[0].code[0] = (OnigCodePoint )(*p + 0x20);
return 1;
}
else if (0xd0 <= *p && *p <= 0xdf) {
if (*p == SHARP_s) {
items[0].byte_len = 1;
items[0].code_len = 2;
items[0].code[0] = (OnigCodePoint )'s';
items[0].code[1] = (OnigCodePoint )'s';
items[1].byte_len = 1;
items[1].code_len = 2;
items[1].code[0] = (OnigCodePoint )'S';
items[1].code[1] = (OnigCodePoint )'S';
items[2].byte_len = 1;
items[2].code_len = 2;
items[2].code[0] = (OnigCodePoint )'s';
items[2].code[1] = (OnigCodePoint )'S';
items[3].byte_len = 1;
items[3].code_len = 2;
items[3].code[0] = (OnigCodePoint )'S';
items[3].code[1] = (OnigCodePoint )'s';
return 4;
}
else if (*p != 0xd7) {
items[0].byte_len = 1;
items[0].code_len = 1;
items[0].code[0] = (OnigCodePoint )(*p + 0x20);
return 1;
}
}
else if (0xe0 <= *p && *p <= 0xef) {
items[0].byte_len = 1;
items[0].code_len = 1;
items[0].code[0] = (OnigCodePoint )(*p - 0x20);
return 1;
}
else if (0xf0 <= *p && *p <= 0xfe) {
if (*p != 0xf7) {
items[0].byte_len = 1;
items[0].code_len = 1;
items[0].code[0] = (OnigCodePoint )(*p - 0x20);
return 1;
}
}
return 0;
}
static int
mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end ARG_UNUSED,
UChar* lower, OnigEncoding enc ARG_UNUSED)
{
const UChar* p = *pp;
if (*p == SHARP_s && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
*lower++ = 's';
*lower = 's';
(*pp)++;
return 2;
}
*lower = ONIGENC_ISO_8859_1_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 == SHARP_s && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
(*pp)++;
return TRUE;
}
(*pp)++;
v = (EncISO_8859_1_CtypeTable[*p] & (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
if ((v | BIT_CTYPE_LOWER) != 0) {
/* 0xdf, 0xaa, 0xb5, 0xba are lower case letter, but can't convert. */
if (*p >= 0xaa && *p <= 0xba)
return FALSE;
else
return TRUE;
}
return (v != 0 ? TRUE : FALSE);
}
#endif
static int
is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
{
if (code < 256)
return ENC_IS_ISO_8859_1_CTYPE(code, ctype);
else
return FALSE;
}
static int
case_map (OnigCaseFoldType* flagP, const OnigUChar** pp,
const OnigUChar* end, OnigUChar* to, OnigUChar* to_end,
const struct OnigEncodingTypeST* enc)
{
OnigCodePoint code;
OnigUChar *to_start = to;
OnigCaseFoldType flags = *flagP;
while (*pp<end && to<to_end) {
code = *(*pp)++;
if (code==SHARP_s) {
if (flags&ONIGENC_CASE_UPCASE) {
flags |= ONIGENC_CASE_MODIFIED;
*to++ = 'S';
code = (flags&ONIGENC_CASE_TITLECASE) ? 's' : 'S';
}
else if (flags&ONIGENC_CASE_FOLD) {
flags |= ONIGENC_CASE_MODIFIED;
*to++ = 's';
code = 's';
}
}
else if ((EncISO_8859_1_CtypeTable[code] & BIT_CTYPE_UPPER)
&& (flags & (ONIGENC_CASE_DOWNCASE|ONIGENC_CASE_FOLD))) {
flags |= ONIGENC_CASE_MODIFIED;
code += 0x20;
}
else if (code==0xAA || code==0xBA || code==0xB5 || code==0xFF) ;
else if ((EncISO_8859_1_CtypeTable[code]&BIT_CTYPE_LOWER)
&& (flags&ONIGENC_CASE_UPCASE)) {
flags |= ONIGENC_CASE_MODIFIED;
code -= 0x20;
}
*to++ = code;
if (flags&ONIGENC_CASE_TITLECASE) /* switch from titlecase to lowercase for capitalize */
flags ^= (ONIGENC_CASE_UPCASE|ONIGENC_CASE_DOWNCASE|ONIGENC_CASE_TITLECASE);
}
*flagP = flags;
return (int)(to-to_start);
}
OnigEncodingDefine(iso_8859_1, ISO_8859_1) = {
onigenc_single_byte_mbc_enc_len,
"ISO-8859-1", /* 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,
0,
ONIGENC_FLAG_NONE,
case_map,
};
ENC_ALIAS("ISO8859-1", "ISO-8859-1")
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