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tag: oniguruma_2_2_5
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/**********************************************************************
regenc.c - Oniguruma (regular expression library)
Copyright (C) 2003-2004 K.Kosako (kosako@sofnec.co.jp)
**********************************************************************/
#include "regenc.h"
OnigEncoding OnigEncDefaultCharEncoding = ONIG_ENCODING_INIT_DEFAULT;
extern int
onigenc_init()
{
return 0;
}
extern OnigEncoding
onigenc_get_default_encoding()
{
return OnigEncDefaultCharEncoding;
}
extern int
onigenc_set_default_encoding(OnigEncoding enc)
{
OnigEncDefaultCharEncoding = enc;
return 0;
}
extern UChar*
onigenc_get_right_adjust_char_head(OnigEncoding enc, UChar* start, UChar* s)
{
UChar* p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s);
if (p < s) {
p += enc_len(enc, *p);
}
return p;
}
extern UChar*
onigenc_get_right_adjust_char_head_with_prev(OnigEncoding enc,
UChar* start, UChar* s, UChar** prev)
{
UChar* p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s);
if (p < s) {
if (prev) *prev = p;
p += enc_len(enc, *p);
}
else {
if (prev) *prev = (UChar* )NULL; /* Sorry */
}
return p;
}
extern UChar*
onigenc_get_prev_char_head(OnigEncoding enc, UChar* start, UChar* s)
{
if (s <= start)
return (UChar* )NULL;
return ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s - 1);
}
extern UChar*
onigenc_step_back(OnigEncoding enc, UChar* start, UChar* s, int n)
{
while (ONIG_IS_NOT_NULL(s) && n-- > 0) {
if (s <= start)
return (UChar* )NULL;
s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s - 1);
}
return s;
}
#ifndef ONIG_RUBY_M17N
#ifndef NOT_RUBY
#define USE_APPLICATION_TO_LOWER_CASE_TABLE
#endif
UChar* OnigEncAsciiToLowerCaseTable = (UChar* )0;
#ifndef USE_APPLICATION_TO_LOWER_CASE_TABLE
static UChar BuiltInAsciiToLowerCaseTable[] = {
'\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',
'\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
'\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
'\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
'\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
'\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
'\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
'\330', '\331', '\332', '\333', '\334', '\335', '\336', '\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',
};
#endif /* not USE_APPLICATION_TO_LOWER_CASE_TABLE */
unsigned short OnigEncAsciiCtypeTable[256] = {
0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004,
0x1004, 0x1106, 0x1104, 0x1104, 0x1104, 0x1104, 0x1004, 0x1004,
0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004,
0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004, 0x1004,
0x1142, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0,
0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0,
0x1c58, 0x1c58, 0x1c58, 0x1c58, 0x1c58, 0x1c58, 0x1c58, 0x1c58,
0x1c58, 0x1c58, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x10d0,
0x10d0, 0x1e51, 0x1e51, 0x1e51, 0x1e51, 0x1e51, 0x1e51, 0x1a51,
0x1a51, 0x1a51, 0x1a51, 0x1a51, 0x1a51, 0x1a51, 0x1a51, 0x1a51,
0x1a51, 0x1a51, 0x1a51, 0x1a51, 0x1a51, 0x1a51, 0x1a51, 0x1a51,
0x1a51, 0x1a51, 0x1a51, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x18d0,
0x10d0, 0x1c71, 0x1c71, 0x1c71, 0x1c71, 0x1c71, 0x1c71, 0x1871,
0x1871, 0x1871, 0x1871, 0x1871, 0x1871, 0x1871, 0x1871, 0x1871,
0x1871, 0x1871, 0x1871, 0x1871, 0x1871, 0x1871, 0x1871, 0x1871,
0x1871, 0x1871, 0x1871, 0x10d0, 0x10d0, 0x10d0, 0x10d0, 0x1004,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
};
extern void
onigenc_set_default_caseconv_table(UChar* table)
{
if (table == (UChar* )0) {
#ifndef USE_APPLICATION_TO_LOWER_CASE_TABLE
table = BuiltInAsciiToLowerCaseTable;
#else
return ;
#endif
}
if (table != OnigEncAsciiToLowerCaseTable) {
OnigEncAsciiToLowerCaseTable = table;
}
}
extern UChar*
onigenc_get_left_adjust_char_head(OnigEncoding enc, UChar* start, UChar* s)
{
return ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s);
}
extern int
onigenc_nothing_get_all_fold_match_code(OnigCodePoint** codes)
{
return 0;
}
extern int
onigenc_nothing_get_fold_match_info(UChar* p, UChar* end,
OnigEncFoldMatchInfo** info)
{
return -1;
}
extern int
onigenc_nothing_get_ctype_code_range(int ctype, int* nsb, int* nmb,
OnigCodePointRange* sbr[], OnigCodePointRange* mbr[])
{
return -1;
}
/* for single byte encodings */
extern int
onigenc_ascii_mbc_to_lower(UChar* p, UChar* lower)
{
*lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p);
return 1; /* return byte length of converted char to lower */
}
extern int
onigenc_ascii_mbc_is_case_ambig(UChar* p)
{
return ONIGENC_IS_ASCII_CODE_CASE_AMBIG(*p);
}
extern OnigCodePoint
onigenc_single_byte_mbc_to_code(UChar* p, UChar* end)
{
return (OnigCodePoint )(*p);
}
extern int
onigenc_single_byte_code_to_mbclen(OnigCodePoint code)
{
return 1;
}
extern int
onigenc_single_byte_code_to_mbc_first(OnigCodePoint code)
{
return (code & 0xff);
}
extern int
onigenc_single_byte_code_to_mbc(OnigCodePoint code, UChar *buf)
{
*buf = (UChar )(code & 0xff);
return 1;
}
extern UChar*
onigenc_single_byte_left_adjust_char_head(UChar* start, UChar* s)
{
return s;
}
extern int
onigenc_single_byte_is_allowed_reverse_match(UChar* s, UChar* end)
{
return TRUE;
}
extern OnigCodePoint
onigenc_mbn_mbc_to_code(OnigEncoding enc, UChar* p, UChar* end)
{
int c, i, len;
OnigCodePoint n;
c = *p++;
len = enc_len(enc, c);
n = c;
if (len == 1) return n;
for (i = 1; i < len; i++) {
if (p >= end) break;
c = *p++;
n <<= 8; n += c;
}
return n;
}
extern int
onigenc_mbn_mbc_to_lower(OnigEncoding enc, UChar* p, UChar* lower)
{
int len;
if (ONIGENC_IS_MBC_ASCII(p)) {
*lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p);
return 1;
}
else {
len = enc_len(enc, *p);
if (lower != p) {
/* memcpy(lower, p, len); */
int i;
for (i = 0; i < len; i++) {
*lower++ = *p++;
}
}
return len; /* return byte length of converted to lower char */
}
}
extern int
onigenc_mbn_mbc_is_case_ambig(UChar* p)
{
if (ONIGENC_IS_MBC_ASCII(p))
return ONIGENC_IS_ASCII_CODE_CASE_AMBIG(*p);
return FALSE;
}
extern int
onigenc_mb2_code_to_mbclen(OnigCodePoint code)
{
if ((code & 0xff00) != 0) return 2;
else return 1;
}
extern int
onigenc_mb4_code_to_mbclen(OnigCodePoint code)
{
if ((code & 0xff000000) != 0) return 4;
else if ((code & 0xff0000) != 0) return 3;
else if ((code & 0xff00) != 0) return 2;
else return 1;
}
extern int
onigenc_mb2_code_to_mbc_first(OnigCodePoint code)
{
int first;
if ((code & 0xff00) != 0) {
first = (code >> 8) & 0xff;
}
else {
return (int )code;
}
return first;
}
extern int
onigenc_mb4_code_to_mbc_first(OnigCodePoint code)
{
int first;
if ((code & 0xff000000) != 0) {
first = (code >> 24) & 0xff;
}
else if ((code & 0xff0000) != 0) {
first = (code >> 16) & 0xff;
}
else if ((code & 0xff00) != 0) {
first = (code >> 8) & 0xff;
}
else {
return (int )code;
}
return first;
}
extern int
onigenc_mb2_code_to_mbc(OnigEncoding enc, OnigCodePoint code, UChar *buf)
{
UChar *p = buf;
if ((code & 0xff00) != 0) {
*p++ = (UChar )((code >> 8) & 0xff);
}
*p++ = (UChar )(code & 0xff);
#if 1
if (enc_len(enc, buf[0]) != (p - buf))
return ONIGENCERR_INVALID_WIDE_CHAR_VALUE;
#endif
return p - buf;
}
extern int
onigenc_mb4_code_to_mbc(OnigEncoding enc, OnigCodePoint code, UChar *buf)
{
UChar *p = buf;
if ((code & 0xff000000) != 0) {
*p++ = (UChar )((code >> 24) & 0xff);
}
if ((code & 0xff0000) != 0) {
*p++ = (UChar )((code >> 16) & 0xff);
}
if ((code & 0xff00) != 0) {
*p++ = (UChar )((code >> 8) & 0xff);
}
*p++ = (UChar )(code & 0xff);
#if 1
if (enc_len(enc, buf[0]) != (p - buf))
return ONIGENCERR_INVALID_WIDE_CHAR_VALUE;
#endif
return p - buf;
}
extern int
onigenc_mb2_code_is_ctype(OnigEncoding enc, OnigCodePoint code,
unsigned int ctype)
{
if ((ctype & ONIGENC_CTYPE_WORD) != 0) {
if (code < 128)
return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
else {
int first = onigenc_mb2_code_to_mbc_first(code);
return (enc_len(enc, first) > 1 ? TRUE : FALSE);
}
ctype &= ~ONIGENC_CTYPE_WORD;
if (ctype == 0) return FALSE;
}
if (code < 128)
return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
else
return FALSE;
}
extern int
onigenc_mb4_code_is_ctype(OnigEncoding enc, OnigCodePoint code,
unsigned int ctype)
{
if ((ctype & ONIGENC_CTYPE_WORD) != 0) {
if (code < 128)
return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
else {
int first = onigenc_mb4_code_to_mbc_first(code);
return (enc_len(enc, first) > 1 ? TRUE : FALSE);
}
ctype &= ~ONIGENC_CTYPE_WORD;
if (ctype == 0) return FALSE;
}
if (code < 128)
return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
else
return FALSE;
}
extern int
onigenc_get_all_fold_match_code_ss_0xdf(OnigCodePoint** codes)
{
static OnigCodePoint list[] = { 0xdf };
*codes = list;
return 1;
}
extern int
onigenc_get_fold_match_info_ss_0xdf(UChar* p, UChar* end,
OnigEncFoldMatchInfo** info)
{
/* German alphabet ess-tsett(U+00DF) */
static OnigEncFoldMatchInfo ss = {
3,
{ 1, 2, 2 },
{ "\337", "ss", "SS" } /* 0337: 0xdf */
};
if (p >= end) return -1;
if (*p == 0xdf) {
*info = &ss;
return 1;
}
else if (p + 1 < end) {
if ((*p == 'S' && *(p+1) == 'S') ||
(*p == 's' && *(p+1) == 's')) {
*info = &ss;
return 2;
}
}
return -1; /* is not a fold string. */
}
#else /* ONIG_RUBY_M17N */
extern int
onigenc_is_code_ctype(OnigEncoding enc, OnigCodePoint code, int ctype)
{
switch (ctype) {
case ONIGENC_CTYPE_ALPHA:
return m17n_isalpha(enc, code);
break;
case ONIGENC_CTYPE_BLANK:
return ONIGENC_IS_CODE_BLANK(enc, (int )(code));
break;
case ONIGENC_CTYPE_CNTRL:
return m17n_iscntrl(enc, code);
break;
case ONIGENC_CTYPE_DIGIT:
return m17n_isdigit(enc, code);
break;
case ONIGENC_CTYPE_GRAPH:
return ONIGENC_IS_CODE_GRAPH(enc, (int )(code));
break;
case ONIGENC_CTYPE_LOWER:
return m17n_islower(enc, code);
break;
case ONIGENC_CTYPE_PRINT:
return m17n_isprint(enc, code);
break;
case ONIGENC_CTYPE_PUNCT:
return m17n_ispunct(enc, code);
break;
case ONIGENC_CTYPE_SPACE:
return m17n_isspace(enc, code);
break;
case ONIGENC_CTYPE_UPPER:
return m17n_isupper(enc, code);
break;
case ONIGENC_CTYPE_XDIGIT:
return m17n_isxdigit(enc, code);
break;
case ONIGENC_CTYPE_WORD:
return m17n_iswchar(enc, code);
break;
case ONIGENC_CTYPE_ASCII:
return (code < 128 ? TRUE : FALSE);
break;
case ONIGENC_CTYPE_ALNUM:
return m17n_isalnum(enc, code);
break;
default:
break;
}
return 0;
}
extern int
onigenc_code_to_mbc(OnigEncoding enc, OnigCodePoint code, UChar *buf)
{
int c, len;
m17n_mbcput(enc, code, buf);
c = m17n_firstbyte(enc, code);
len = enc_len(enc, c);
return len;
}
extern int
onigenc_mbc_to_lower(OnigEncoding enc, UChar* p, UChar* buf)
{
unsigned int c, low;
c = m17n_codepoint(enc, p, p + enc_len(enc, *p));
low = m17n_tolower(enc, c);
m17n_mbcput(enc, low, buf);
return m17n_codelen(enc, low);
}
extern int
onigenc_mbc_is_case_ambig(OnigEncoding enc, UChar* p)
{
unsigned int c = m17n_codepoint(enc, p, p + enc_len(enc, *p));
if (m17n_isupper(enc, c) || m17n_islower(enc, c))
return TRUE;
return FALSE;
}
extern UChar*
onigenc_get_left_adjust_char_head(OnigEncoding enc, UChar* start, UChar* s)
{
UChar *p;
int len;
if (s <= start) return s;
p = s;
while (!m17n_islead(enc, *p) && p > start) p--;
while (p + (len = enc_len(enc, *p)) < s) {
p += len;
}
if (p + len == s) return s;
return p;
}
extern int
onigenc_is_allowed_reverse_match(OnigEncoding enc, UChar* s, UChar* end)
{
return ONIGENC_IS_SINGLEBYTE(enc);
}
extern void
onigenc_set_default_caseconv_table(UChar* table) { }
#endif /* ONIG_RUBY_M17N */
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