зеркало из https://github.com/github/ruby.git
5353 строки
118 KiB
C
5353 строки
118 KiB
C
/**********************************************************************
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regparse.c - Oniguruma (regular expression library)
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**********************************************************************/
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/*-
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* Copyright (c) 2002-2006 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "regparse.h"
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#define WARN_BUFSIZE 256
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OnigSyntaxType OnigSyntaxRuby = {
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(( SYN_GNU_REGEX_OP | ONIG_SYN_OP_QMARK_NON_GREEDY |
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ONIG_SYN_OP_ESC_OCTAL3 | ONIG_SYN_OP_ESC_X_HEX2 |
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ONIG_SYN_OP_ESC_X_BRACE_HEX8 | ONIG_SYN_OP_ESC_CONTROL_CHARS |
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ONIG_SYN_OP_ESC_C_CONTROL )
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& ~ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END )
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, ( ONIG_SYN_OP2_QMARK_GROUP_EFFECT |
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ONIG_SYN_OP2_OPTION_RUBY |
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ONIG_SYN_OP2_QMARK_LT_NAMED_GROUP | ONIG_SYN_OP2_ESC_K_NAMED_BACKREF |
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ONIG_SYN_OP2_ESC_G_SUBEXP_CALL |
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ONIG_SYN_OP2_PLUS_POSSESSIVE_REPEAT |
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ONIG_SYN_OP2_CCLASS_SET_OP | ONIG_SYN_OP2_ESC_CAPITAL_C_BAR_CONTROL |
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ONIG_SYN_OP2_ESC_CAPITAL_M_BAR_META | ONIG_SYN_OP2_ESC_V_VTAB |
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ONIG_SYN_OP2_ESC_H_XDIGIT )
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, ( SYN_GNU_REGEX_BV |
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ONIG_SYN_ALLOW_INTERVAL_LOW_ABBREV |
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ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND |
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ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP |
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ONIG_SYN_ALLOW_MULTIPLEX_DEFINITION_NAME |
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ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY |
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ONIG_SYN_WARN_CC_OP_NOT_ESCAPED |
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ONIG_SYN_WARN_REDUNDANT_NESTED_REPEAT )
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, ONIG_OPTION_NONE
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};
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OnigSyntaxType* OnigDefaultSyntax = ONIG_SYNTAX_RUBY;
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extern void onig_null_warn(const char* s) { }
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#ifdef RUBY_PLATFORM
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extern void
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onig_rb_warn(const char* s)
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{
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rb_warn("%s", s);
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}
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extern void
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onig_rb_warning(const char* s)
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{
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rb_warning("%s", s);
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}
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#endif
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#ifdef DEFAULT_WARN_FUNCTION
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static OnigWarnFunc onig_warn = (OnigWarnFunc )DEFAULT_WARN_FUNCTION;
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#else
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static OnigWarnFunc onig_warn = onig_null_warn;
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#endif
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#ifdef DEFAULT_VERB_WARN_FUNCTION
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static OnigWarnFunc onig_verb_warn = (OnigWarnFunc )DEFAULT_VERB_WARN_FUNCTION;
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#else
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static OnigWarnFunc onig_verb_warn = onig_null_warn;
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#endif
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extern void onig_set_warn_func(OnigWarnFunc f)
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{
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onig_warn = f;
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}
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extern void onig_set_verb_warn_func(OnigWarnFunc f)
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{
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onig_verb_warn = f;
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}
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static void
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bbuf_free(BBuf* bbuf)
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{
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if (IS_NOT_NULL(bbuf)) {
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if (IS_NOT_NULL(bbuf->p)) xfree(bbuf->p);
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xfree(bbuf);
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}
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}
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static int
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bbuf_clone(BBuf** rto, BBuf* from)
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{
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int r;
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BBuf *to;
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*rto = to = (BBuf* )xmalloc(sizeof(BBuf));
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CHECK_NULL_RETURN_VAL(to, ONIGERR_MEMORY);
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r = BBUF_INIT(to, from->alloc);
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if (r != 0) return r;
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to->used = from->used;
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xmemcpy(to->p, from->p, from->used);
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return 0;
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}
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#define ONOFF(v,f,negative) (negative) ? ((v) &= ~(f)) : ((v) |= (f))
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#define MBCODE_START_POS(enc) \
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(OnigCodePoint )(ONIGENC_MBC_MINLEN(enc) > 1 ? 0 : 0x80)
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#define SET_ALL_MULTI_BYTE_RANGE(enc, pbuf) \
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add_code_range_to_buf(pbuf, MBCODE_START_POS(enc), ~((OnigCodePoint )0))
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#define ADD_ALL_MULTI_BYTE_RANGE(enc, mbuf) do {\
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if (! ONIGENC_IS_SINGLEBYTE(enc)) {\
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r = SET_ALL_MULTI_BYTE_RANGE(enc, &(mbuf));\
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if (r) return r;\
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}\
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} while (0)
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#define BITSET_IS_EMPTY(bs,empty) do {\
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int i;\
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empty = 1;\
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for (i = 0; i < BITSET_SIZE; i++) {\
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if ((bs)[i] != 0) {\
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empty = 0; break;\
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}\
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}\
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} while (0)
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static void
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bitset_set_range(BitSetRef bs, int from, int to)
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{
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int i;
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for (i = from; i <= to && i < SINGLE_BYTE_SIZE; i++) {
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BITSET_SET_BIT(bs, i);
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}
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}
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#if 0
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static void
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bitset_set_all(BitSetRef bs)
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{
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int i;
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for (i = 0; i < BITSET_SIZE; i++) {
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bs[i] = ~((Bits )0);
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}
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}
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#endif
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static void
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bitset_invert(BitSetRef bs)
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{
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int i;
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for (i = 0; i < BITSET_SIZE; i++) {
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bs[i] = ~(bs[i]);
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}
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}
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static void
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bitset_invert_to(BitSetRef from, BitSetRef to)
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{
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int i;
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for (i = 0; i < BITSET_SIZE; i++) {
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to[i] = ~(from[i]);
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}
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}
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static void
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bitset_and(BitSetRef dest, BitSetRef bs)
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{
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int i;
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for (i = 0; i < BITSET_SIZE; i++) {
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dest[i] &= bs[i];
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}
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}
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static void
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bitset_or(BitSetRef dest, BitSetRef bs)
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{
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int i;
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for (i = 0; i < BITSET_SIZE; i++) {
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dest[i] |= bs[i];
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}
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}
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static void
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bitset_copy(BitSetRef dest, BitSetRef bs)
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{
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int i;
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for (i = 0; i < BITSET_SIZE; i++) {
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dest[i] = bs[i];
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}
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}
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extern int
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onig_strncmp(const UChar* s1, const UChar* s2, int n)
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{
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int x;
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while (n-- > 0) {
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x = *s2++ - *s1++;
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if (x) return x;
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}
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return 0;
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}
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static void
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k_strcpy(UChar* dest, const UChar* src, const UChar* end)
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{
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int len = end - src;
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if (len > 0) {
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xmemcpy(dest, src, len);
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dest[len] = (UChar )0;
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}
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}
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static UChar*
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strdup_with_null(OnigEncoding enc, UChar* s, UChar* end)
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{
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int slen, term_len, i;
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UChar *r;
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slen = end - s;
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term_len = ONIGENC_MBC_MINLEN(enc);
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r = (UChar* )xmalloc(slen + term_len);
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CHECK_NULL_RETURN(r);
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xmemcpy(r, s, slen);
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for (i = 0; i < term_len; i++)
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r[slen + i] = (UChar )0;
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return r;
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}
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/* scan pattern methods */
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#define PEND_VALUE 0
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#define PFETCH_READY UChar* pfetch_prev
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#define PEND (p < end ? 0 : 1)
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#define PUNFETCH p = pfetch_prev
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#define PINC do { \
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pfetch_prev = p; \
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p += ONIGENC_MBC_ENC_LEN(enc, p); \
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} while (0)
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#define PFETCH(c) do { \
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c = ONIGENC_MBC_TO_CODE(enc, p, end); \
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pfetch_prev = p; \
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p += ONIGENC_MBC_ENC_LEN(enc, p); \
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} while (0)
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#define PPEEK (p < end ? ONIGENC_MBC_TO_CODE(enc, p, end) : PEND_VALUE)
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#define PPEEK_IS(c) (PPEEK == (OnigCodePoint )c)
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static UChar*
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k_strcat_capa(UChar* dest, UChar* dest_end, const UChar* src, const UChar* src_end,
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int capa)
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{
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UChar* r;
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if (dest)
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r = (UChar* )xrealloc(dest, capa + 1);
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else
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r = (UChar* )xmalloc(capa + 1);
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CHECK_NULL_RETURN(r);
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k_strcpy(r + (dest_end - dest), src, src_end);
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return r;
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}
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/* dest on static area */
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static UChar*
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strcat_capa_from_static(UChar* dest, UChar* dest_end,
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const UChar* src, const UChar* src_end, int capa)
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{
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UChar* r;
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r = (UChar* )xmalloc(capa + 1);
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CHECK_NULL_RETURN(r);
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k_strcpy(r, dest, dest_end);
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k_strcpy(r + (dest_end - dest), src, src_end);
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return r;
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}
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#ifdef USE_NAMED_GROUP
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#define INIT_NAME_BACKREFS_ALLOC_NUM 8
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typedef struct {
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UChar* name;
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int name_len; /* byte length */
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int back_num; /* number of backrefs */
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int back_alloc;
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int back_ref1;
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int* back_refs;
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} NameEntry;
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#ifdef USE_ST_HASH_TABLE
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#include "st.h"
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typedef struct {
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unsigned char* s;
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unsigned char* end;
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} st_strend_key;
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static int strend_cmp(st_strend_key*, st_strend_key*);
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static int strend_hash(st_strend_key*);
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static struct st_hash_type type_strend_hash = {
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strend_cmp,
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strend_hash,
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};
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static st_table*
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onig_st_init_strend_table_with_size(int size)
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{
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return onig_st_init_table_with_size(&type_strend_hash, size);
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}
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static int
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onig_st_lookup_strend(st_table *table, const UChar* str_key, const UChar* end_key, st_data_t *value)
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{
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st_strend_key key;
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key.s = (unsigned char* )str_key;
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key.end = (unsigned char* )end_key;
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return onig_st_lookup(table, (st_data_t )(&key), value);
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}
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static int
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onig_st_insert_strend(st_table *table, const UChar* str_key, const UChar* end_key, st_data_t value)
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{
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st_strend_key* key;
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int result;
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key = (st_strend_key* )xmalloc(sizeof(st_strend_key));
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key->s = (unsigned char* )str_key;
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key->end = (unsigned char* )end_key;
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result = onig_st_insert(table, (st_data_t )key, value);
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if (result) {
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xfree(key);
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}
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return result;
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}
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static int
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strend_cmp(st_strend_key* x, st_strend_key* y)
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{
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unsigned char *p, *q;
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int c;
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if ((x->end - x->s) != (y->end - y->s))
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return 1;
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p = x->s;
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q = y->s;
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while (p < x->end) {
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c = (int )*p - (int )*q;
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if (c != 0) return c;
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p++; q++;
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}
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return 0;
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}
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static int
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strend_hash(st_strend_key* x)
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{
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int val;
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unsigned char *p;
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val = 0;
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p = x->s;
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while (p < x->end) {
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val = val * 997 + (int )*p++;
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}
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return val + (val >> 5);
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}
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typedef st_table NameTable;
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typedef st_data_t HashDataType; /* 1.6 st.h doesn't define st_data_t type */
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#define NAMEBUF_SIZE 24
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#define NAMEBUF_SIZE_1 25
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#ifdef ONIG_DEBUG
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static int
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i_print_name_entry(UChar* key, NameEntry* e, void* arg)
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{
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int i;
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FILE* fp = (FILE* )arg;
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fprintf(fp, "%s: ", e->name);
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if (e->back_num == 0)
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fputs("-", fp);
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else if (e->back_num == 1)
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fprintf(fp, "%d", e->back_ref1);
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else {
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for (i = 0; i < e->back_num; i++) {
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if (i > 0) fprintf(fp, ", ");
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fprintf(fp, "%d", e->back_refs[i]);
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}
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}
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fputs("\n", fp);
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return ST_CONTINUE;
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}
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extern int
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onig_print_names(FILE* fp, regex_t* reg)
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{
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NameTable* t = (NameTable* )reg->name_table;
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if (IS_NOT_NULL(t)) {
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fprintf(fp, "name table\n");
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onig_st_foreach(t, i_print_name_entry, (HashDataType )fp);
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fputs("\n", fp);
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}
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return 0;
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}
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#endif
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static int
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i_free_name_entry(UChar* key, NameEntry* e, void* arg)
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{
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xfree(e->name);
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if (IS_NOT_NULL(e->back_refs)) xfree(e->back_refs);
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xfree(key);
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xfree(e);
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return ST_DELETE;
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}
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static int
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names_clear(regex_t* reg)
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{
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NameTable* t = (NameTable* )reg->name_table;
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if (IS_NOT_NULL(t)) {
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onig_st_foreach(t, i_free_name_entry, 0);
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}
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return 0;
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}
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extern int
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onig_names_free(regex_t* reg)
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{
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int r;
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NameTable* t;
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r = names_clear(reg);
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if (r) return r;
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t = (NameTable* )reg->name_table;
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if (IS_NOT_NULL(t)) onig_st_free_table(t);
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reg->name_table = (void* )NULL;
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return 0;
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}
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static NameEntry*
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name_find(regex_t* reg, const UChar* name, const UChar* name_end)
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{
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NameEntry* e;
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NameTable* t = (NameTable* )reg->name_table;
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e = (NameEntry* )NULL;
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if (IS_NOT_NULL(t)) {
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onig_st_lookup_strend(t, name, name_end, (HashDataType* )((void* )(&e)));
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}
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return e;
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}
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|
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typedef struct {
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int (*func)(const UChar*, const UChar*,int,int*,regex_t*,void*);
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regex_t* reg;
|
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void* arg;
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int ret;
|
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OnigEncoding enc;
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} INamesArg;
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|
|
static int
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i_names(UChar* key, NameEntry* e, INamesArg* arg)
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{
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int r = (*(arg->func))(e->name,
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|
/*e->name + onigenc_str_bytelen_null(arg->enc, e->name), */
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e->name + e->name_len,
|
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e->back_num,
|
|
(e->back_num > 1 ? e->back_refs : &(e->back_ref1)),
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arg->reg, arg->arg);
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if (r != 0) {
|
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arg->ret = r;
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return ST_STOP;
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|
}
|
|
return ST_CONTINUE;
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|
}
|
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|
|
extern int
|
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onig_foreach_name(regex_t* reg,
|
|
int (*func)(const UChar*, const UChar*,int,int*,regex_t*,void*),
|
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void* arg)
|
|
{
|
|
INamesArg narg;
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
narg.ret = 0;
|
|
if (IS_NOT_NULL(t)) {
|
|
narg.func = func;
|
|
narg.reg = reg;
|
|
narg.arg = arg;
|
|
narg.enc = reg->enc; /* should be pattern encoding. */
|
|
onig_st_foreach(t, i_names, (HashDataType )&narg);
|
|
}
|
|
return narg.ret;
|
|
}
|
|
|
|
static int
|
|
i_renumber_name(UChar* key, NameEntry* e, GroupNumRemap* map)
|
|
{
|
|
int i;
|
|
|
|
if (e->back_num > 1) {
|
|
for (i = 0; i < e->back_num; i++) {
|
|
e->back_refs[i] = map[e->back_refs[i]].new_val;
|
|
}
|
|
}
|
|
else if (e->back_num == 1) {
|
|
e->back_ref1 = map[e->back_ref1].new_val;
|
|
}
|
|
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
extern int
|
|
onig_renumber_name_table(regex_t* reg, GroupNumRemap* map)
|
|
{
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
if (IS_NOT_NULL(t)) {
|
|
onig_st_foreach(t, i_renumber_name, (HashDataType )map);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
extern int
|
|
onig_number_of_names(regex_t* reg)
|
|
{
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
if (IS_NOT_NULL(t))
|
|
return t->num_entries;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
#else /* USE_ST_HASH_TABLE */
|
|
|
|
#define INIT_NAMES_ALLOC_NUM 8
|
|
|
|
typedef struct {
|
|
NameEntry* e;
|
|
int num;
|
|
int alloc;
|
|
} NameTable;
|
|
|
|
|
|
#ifdef ONIG_DEBUG
|
|
extern int
|
|
onig_print_names(FILE* fp, regex_t* reg)
|
|
{
|
|
int i, j;
|
|
NameEntry* e;
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
if (IS_NOT_NULL(t) && t->num > 0) {
|
|
fprintf(fp, "name table\n");
|
|
for (i = 0; i < t->num; i++) {
|
|
e = &(t->e[i]);
|
|
fprintf(fp, "%s: ", e->name);
|
|
if (e->back_num == 0) {
|
|
fputs("-", fp);
|
|
}
|
|
else if (e->back_num == 1) {
|
|
fprintf(fp, "%d", e->back_ref1);
|
|
}
|
|
else {
|
|
for (j = 0; j < e->back_num; j++) {
|
|
if (j > 0) fprintf(fp, ", ");
|
|
fprintf(fp, "%d", e->back_refs[j]);
|
|
}
|
|
}
|
|
fputs("\n", fp);
|
|
}
|
|
fputs("\n", fp);
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
names_clear(regex_t* reg)
|
|
{
|
|
int i;
|
|
NameEntry* e;
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
if (IS_NOT_NULL(t)) {
|
|
for (i = 0; i < t->num; i++) {
|
|
e = &(t->e[i]);
|
|
if (IS_NOT_NULL(e->name)) {
|
|
xfree(e->name);
|
|
e->name = NULL;
|
|
e->name_len = 0;
|
|
e->back_num = 0;
|
|
e->back_alloc = 0;
|
|
if (IS_NOT_NULL(e->back_refs)) xfree(e->back_refs);
|
|
e->back_refs = (int* )NULL;
|
|
}
|
|
}
|
|
if (IS_NOT_NULL(t->e)) {
|
|
xfree(t->e);
|
|
t->e = NULL;
|
|
}
|
|
t->num = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
extern int
|
|
onig_names_free(regex_t* reg)
|
|
{
|
|
int r;
|
|
NameTable* t;
|
|
|
|
r = names_clear(reg);
|
|
if (r) return r;
|
|
|
|
t = (NameTable* )reg->name_table;
|
|
if (IS_NOT_NULL(t)) xfree(t);
|
|
reg->name_table = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static NameEntry*
|
|
name_find(regex_t* reg, UChar* name, UChar* name_end)
|
|
{
|
|
int i, len;
|
|
NameEntry* e;
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
if (IS_NOT_NULL(t)) {
|
|
len = name_end - name;
|
|
for (i = 0; i < t->num; i++) {
|
|
e = &(t->e[i]);
|
|
if (len == e->name_len && onig_strncmp(name, e->name, len) == 0)
|
|
return e;
|
|
}
|
|
}
|
|
return (NameEntry* )NULL;
|
|
}
|
|
|
|
extern int
|
|
onig_foreach_name(regex_t* reg,
|
|
int (*func)(const UChar*, const UChar*,int,int*,regex_t*,void*),
|
|
void* arg)
|
|
{
|
|
int i, r;
|
|
NameEntry* e;
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
if (IS_NOT_NULL(t)) {
|
|
for (i = 0; i < t->num; i++) {
|
|
e = &(t->e[i]);
|
|
r = (*func)(e->name, e->name + e->name_len, e->back_num,
|
|
(e->back_num > 1 ? e->back_refs : &(e->back_ref1)),
|
|
reg, arg);
|
|
if (r != 0) return r;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
extern int
|
|
onig_number_of_names(regex_t* reg)
|
|
{
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
if (IS_NOT_NULL(t))
|
|
return t->num;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
#endif /* else USE_ST_HASH_TABLE */
|
|
|
|
static int
|
|
name_add(regex_t* reg, UChar* name, UChar* name_end, int backref, ScanEnv* env)
|
|
{
|
|
int alloc;
|
|
NameEntry* e;
|
|
NameTable* t = (NameTable* )reg->name_table;
|
|
|
|
if (name_end - name <= 0)
|
|
return ONIGERR_EMPTY_GROUP_NAME;
|
|
|
|
e = name_find(reg, name, name_end);
|
|
if (IS_NULL(e)) {
|
|
#ifdef USE_ST_HASH_TABLE
|
|
if (IS_NULL(t)) {
|
|
t = onig_st_init_strend_table_with_size(5);
|
|
reg->name_table = (void* )t;
|
|
}
|
|
e = (NameEntry* )xmalloc(sizeof(NameEntry));
|
|
CHECK_NULL_RETURN_VAL(e, ONIGERR_MEMORY);
|
|
|
|
e->name = strdup_with_null(reg->enc, name, name_end);
|
|
if (IS_NULL(e->name)) return ONIGERR_MEMORY;
|
|
onig_st_insert_strend(t, e->name, (e->name + (name_end - name)),
|
|
(HashDataType )e);
|
|
|
|
e->name_len = name_end - name;
|
|
e->back_num = 0;
|
|
e->back_alloc = 0;
|
|
e->back_refs = (int* )NULL;
|
|
|
|
#else
|
|
|
|
if (IS_NULL(t)) {
|
|
alloc = INIT_NAMES_ALLOC_NUM;
|
|
t = (NameTable* )xmalloc(sizeof(NameTable));
|
|
CHECK_NULL_RETURN_VAL(t, ONIGERR_MEMORY);
|
|
t->e = NULL;
|
|
t->alloc = 0;
|
|
t->num = 0;
|
|
|
|
t->e = (NameEntry* )xmalloc(sizeof(NameEntry) * alloc);
|
|
if (IS_NULL(t->e)) {
|
|
xfree(t);
|
|
return ONIGERR_MEMORY;
|
|
}
|
|
t->alloc = alloc;
|
|
reg->name_table = t;
|
|
goto clear;
|
|
}
|
|
else if (t->num == t->alloc) {
|
|
int i;
|
|
|
|
alloc = t->alloc * 2;
|
|
t->e = (NameEntry* )xrealloc(t->e, sizeof(NameEntry) * alloc);
|
|
CHECK_NULL_RETURN_VAL(t->e, ONIGERR_MEMORY);
|
|
t->alloc = alloc;
|
|
|
|
clear:
|
|
for (i = t->num; i < t->alloc; i++) {
|
|
t->e[i].name = NULL;
|
|
t->e[i].name_len = 0;
|
|
t->e[i].back_num = 0;
|
|
t->e[i].back_alloc = 0;
|
|
t->e[i].back_refs = (int* )NULL;
|
|
}
|
|
}
|
|
e = &(t->e[t->num]);
|
|
t->num++;
|
|
e->name = strdup_with_null(reg->enc, name, name_end);
|
|
e->name_len = name_end - name;
|
|
#endif
|
|
}
|
|
|
|
if (e->back_num >= 1 &&
|
|
! IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_MULTIPLEX_DEFINITION_NAME)) {
|
|
onig_scan_env_set_error_string(env, ONIGERR_MULTIPLEX_DEFINED_NAME,
|
|
name, name_end);
|
|
return ONIGERR_MULTIPLEX_DEFINED_NAME;
|
|
}
|
|
|
|
e->back_num++;
|
|
if (e->back_num == 1) {
|
|
e->back_ref1 = backref;
|
|
}
|
|
else {
|
|
if (e->back_num == 2) {
|
|
alloc = INIT_NAME_BACKREFS_ALLOC_NUM;
|
|
e->back_refs = (int* )xmalloc(sizeof(int) * alloc);
|
|
CHECK_NULL_RETURN_VAL(e->back_refs, ONIGERR_MEMORY);
|
|
e->back_alloc = alloc;
|
|
e->back_refs[0] = e->back_ref1;
|
|
e->back_refs[1] = backref;
|
|
}
|
|
else {
|
|
if (e->back_num > e->back_alloc) {
|
|
alloc = e->back_alloc * 2;
|
|
e->back_refs = (int* )xrealloc(e->back_refs, sizeof(int) * alloc);
|
|
CHECK_NULL_RETURN_VAL(e->back_refs, ONIGERR_MEMORY);
|
|
e->back_alloc = alloc;
|
|
}
|
|
e->back_refs[e->back_num - 1] = backref;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
extern int
|
|
onig_name_to_group_numbers(regex_t* reg, const UChar* name,
|
|
const UChar* name_end, int** nums)
|
|
{
|
|
NameEntry* e;
|
|
|
|
e = name_find(reg, name, name_end);
|
|
if (IS_NULL(e)) return ONIGERR_UNDEFINED_NAME_REFERENCE;
|
|
|
|
switch (e->back_num) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
*nums = &(e->back_ref1);
|
|
break;
|
|
default:
|
|
*nums = e->back_refs;
|
|
break;
|
|
}
|
|
return e->back_num;
|
|
}
|
|
|
|
extern int
|
|
onig_name_to_backref_number(regex_t* reg, const UChar* name,
|
|
const UChar* name_end, OnigRegion *region)
|
|
{
|
|
int i, n, *nums;
|
|
|
|
n = onig_name_to_group_numbers(reg, name, name_end, &nums);
|
|
if (n < 0)
|
|
return n;
|
|
else if (n == 0)
|
|
return ONIGERR_PARSER_BUG;
|
|
else if (n == 1)
|
|
return nums[0];
|
|
else {
|
|
if (IS_NOT_NULL(region)) {
|
|
for (i = n - 1; i >= 0; i--) {
|
|
if (region->beg[nums[i]] != ONIG_REGION_NOTPOS)
|
|
return nums[i];
|
|
}
|
|
}
|
|
return nums[n - 1];
|
|
}
|
|
}
|
|
|
|
#else /* USE_NAMED_GROUP */
|
|
|
|
extern int
|
|
onig_name_to_group_numbers(regex_t* reg, const UChar* name,
|
|
const UChar* name_end, int** nums)
|
|
{
|
|
return ONIG_NO_SUPPORT_CONFIG;
|
|
}
|
|
|
|
extern int
|
|
onig_name_to_backref_number(regex_t* reg, const UChar* name,
|
|
const UChar* name_end, OnigRegion* region)
|
|
{
|
|
return ONIG_NO_SUPPORT_CONFIG;
|
|
}
|
|
|
|
extern int
|
|
onig_foreach_name(regex_t* reg,
|
|
int (*func)(const UChar*, const UChar*,int,int*,regex_t*,void*),
|
|
void* arg)
|
|
{
|
|
return ONIG_NO_SUPPORT_CONFIG;
|
|
}
|
|
|
|
extern int
|
|
onig_number_of_names(regex_t* reg)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* else USE_NAMED_GROUP */
|
|
|
|
extern int
|
|
onig_noname_group_capture_is_active(regex_t* reg)
|
|
{
|
|
if (ONIG_IS_OPTION_ON(reg->options, ONIG_OPTION_DONT_CAPTURE_GROUP))
|
|
return 0;
|
|
|
|
#ifdef USE_NAMED_GROUP
|
|
if (onig_number_of_names(reg) > 0 &&
|
|
IS_SYNTAX_BV(reg->syntax, ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP) &&
|
|
!ONIG_IS_OPTION_ON(reg->options, ONIG_OPTION_CAPTURE_GROUP)) {
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
#define INIT_SCANENV_MEMNODES_ALLOC_SIZE 16
|
|
|
|
static void
|
|
scan_env_clear(ScanEnv* env)
|
|
{
|
|
int i;
|
|
|
|
BIT_STATUS_CLEAR(env->capture_history);
|
|
BIT_STATUS_CLEAR(env->bt_mem_start);
|
|
BIT_STATUS_CLEAR(env->bt_mem_end);
|
|
BIT_STATUS_CLEAR(env->backrefed_mem);
|
|
env->error = (UChar* )NULL;
|
|
env->error_end = (UChar* )NULL;
|
|
env->num_call = 0;
|
|
env->num_mem = 0;
|
|
#ifdef USE_NAMED_GROUP
|
|
env->num_named = 0;
|
|
#endif
|
|
env->mem_alloc = 0;
|
|
env->mem_nodes_dynamic = (Node** )NULL;
|
|
|
|
for (i = 0; i < SCANENV_MEMNODES_SIZE; i++)
|
|
env->mem_nodes_static[i] = NULL_NODE;
|
|
|
|
#ifdef USE_COMBINATION_EXPLOSION_CHECK
|
|
env->num_comb_exp_check = 0;
|
|
env->comb_exp_max_regnum = 0;
|
|
env->curr_max_regnum = 0;
|
|
env->has_recursion = 0;
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
scan_env_add_mem_entry(ScanEnv* env)
|
|
{
|
|
int i, need, alloc;
|
|
Node** p;
|
|
|
|
need = env->num_mem + 1;
|
|
if (need >= SCANENV_MEMNODES_SIZE) {
|
|
if (env->mem_alloc <= need) {
|
|
if (IS_NULL(env->mem_nodes_dynamic)) {
|
|
alloc = INIT_SCANENV_MEMNODES_ALLOC_SIZE;
|
|
p = (Node** )xmalloc(sizeof(Node*) * alloc);
|
|
xmemcpy(p, env->mem_nodes_static,
|
|
sizeof(Node*) * SCANENV_MEMNODES_SIZE);
|
|
}
|
|
else {
|
|
alloc = env->mem_alloc * 2;
|
|
p = (Node** )xrealloc(env->mem_nodes_dynamic, sizeof(Node*) * alloc);
|
|
}
|
|
CHECK_NULL_RETURN_VAL(p, ONIGERR_MEMORY);
|
|
|
|
for (i = env->num_mem + 1; i < alloc; i++)
|
|
p[i] = NULL_NODE;
|
|
|
|
env->mem_nodes_dynamic = p;
|
|
env->mem_alloc = alloc;
|
|
}
|
|
}
|
|
|
|
env->num_mem++;
|
|
return env->num_mem;
|
|
}
|
|
|
|
static int
|
|
scan_env_set_mem_node(ScanEnv* env, int num, Node* node)
|
|
{
|
|
if (env->num_mem >= num)
|
|
SCANENV_MEM_NODES(env)[num] = node;
|
|
else
|
|
return ONIGERR_PARSER_BUG;
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifdef USE_RECYCLE_NODE
|
|
typedef struct _FreeNode {
|
|
struct _FreeNode* next;
|
|
} FreeNode;
|
|
|
|
static FreeNode* FreeNodeList = (FreeNode* )NULL;
|
|
#endif
|
|
|
|
extern void
|
|
onig_node_free(Node* node)
|
|
{
|
|
start:
|
|
if (IS_NULL(node)) return ;
|
|
|
|
switch (NTYPE(node)) {
|
|
case N_STRING:
|
|
if (IS_NOT_NULL(NSTRING(node).s) && NSTRING(node).s != NSTRING(node).buf) {
|
|
xfree(NSTRING(node).s);
|
|
}
|
|
break;
|
|
|
|
case N_LIST:
|
|
case N_ALT:
|
|
onig_node_free(NCONS(node).left);
|
|
/* onig_node_free(NCONS(node).right); */
|
|
{
|
|
Node* next_node = NCONS(node).right;
|
|
|
|
#ifdef USE_RECYCLE_NODE
|
|
{
|
|
FreeNode* n = (FreeNode* )node;
|
|
|
|
THREAD_ATOMIC_START;
|
|
n->next = FreeNodeList;
|
|
FreeNodeList = n;
|
|
THREAD_ATOMIC_END;
|
|
}
|
|
#else
|
|
xfree(node);
|
|
#endif
|
|
|
|
node = next_node;
|
|
goto start;
|
|
}
|
|
break;
|
|
|
|
case N_CCLASS:
|
|
{
|
|
CClassNode* cc = &(NCCLASS(node));
|
|
|
|
if (IS_CCLASS_SHARE(cc))
|
|
return ;
|
|
|
|
if (cc->mbuf)
|
|
bbuf_free(cc->mbuf);
|
|
}
|
|
break;
|
|
|
|
case N_QUALIFIER:
|
|
if (NQUALIFIER(node).target)
|
|
onig_node_free(NQUALIFIER(node).target);
|
|
break;
|
|
|
|
case N_EFFECT:
|
|
if (NEFFECT(node).target)
|
|
onig_node_free(NEFFECT(node).target);
|
|
break;
|
|
|
|
case N_BACKREF:
|
|
if (IS_NOT_NULL(NBACKREF(node).back_dynamic))
|
|
xfree(NBACKREF(node).back_dynamic);
|
|
break;
|
|
|
|
case N_ANCHOR:
|
|
if (NANCHOR(node).target)
|
|
onig_node_free(NANCHOR(node).target);
|
|
break;
|
|
}
|
|
|
|
#ifdef USE_RECYCLE_NODE
|
|
{
|
|
FreeNode* n = (FreeNode* )node;
|
|
|
|
THREAD_ATOMIC_START;
|
|
n->next = FreeNodeList;
|
|
FreeNodeList = n;
|
|
THREAD_ATOMIC_END;
|
|
}
|
|
#else
|
|
xfree(node);
|
|
#endif
|
|
}
|
|
|
|
#ifdef USE_RECYCLE_NODE
|
|
extern int
|
|
onig_free_node_list()
|
|
{
|
|
FreeNode* n;
|
|
|
|
/* THREAD_ATOMIC_START; */
|
|
while (IS_NOT_NULL(FreeNodeList)) {
|
|
n = FreeNodeList;
|
|
FreeNodeList = FreeNodeList->next;
|
|
xfree(n);
|
|
}
|
|
/* THREAD_ATOMIC_END; */
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static Node*
|
|
node_new()
|
|
{
|
|
Node* node;
|
|
|
|
#ifdef USE_RECYCLE_NODE
|
|
THREAD_ATOMIC_START;
|
|
if (IS_NOT_NULL(FreeNodeList)) {
|
|
node = (Node* )FreeNodeList;
|
|
FreeNodeList = FreeNodeList->next;
|
|
THREAD_ATOMIC_END;
|
|
return node;
|
|
}
|
|
THREAD_ATOMIC_END;
|
|
#endif
|
|
|
|
node = (Node* )xmalloc(sizeof(Node));
|
|
return node;
|
|
}
|
|
|
|
|
|
static void
|
|
initialize_cclass(CClassNode* cc)
|
|
{
|
|
BITSET_CLEAR(cc->bs);
|
|
cc->flags = 0;
|
|
cc->mbuf = NULL;
|
|
}
|
|
|
|
static Node*
|
|
node_new_cclass()
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_CCLASS;
|
|
|
|
initialize_cclass(&(NCCLASS(node)));
|
|
return node;
|
|
}
|
|
|
|
static Node*
|
|
node_new_cclass_by_codepoint_range(int not,
|
|
const OnigCodePoint sbr[], const OnigCodePoint mbr[])
|
|
{
|
|
CClassNode* cc;
|
|
int n, i, j;
|
|
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_CCLASS;
|
|
|
|
cc = &(NCCLASS(node));
|
|
cc->flags = 0;
|
|
if (not != 0) CCLASS_SET_NOT(cc);
|
|
|
|
BITSET_CLEAR(cc->bs);
|
|
if (IS_NOT_NULL(sbr)) {
|
|
n = ONIGENC_CODE_RANGE_NUM(sbr);
|
|
for (i = 0; i < n; i++) {
|
|
for (j = ONIGENC_CODE_RANGE_FROM(sbr, i);
|
|
j <= (int )ONIGENC_CODE_RANGE_TO(sbr, i); j++) {
|
|
BITSET_SET_BIT(cc->bs, j);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (IS_NULL(mbr)) {
|
|
is_null:
|
|
cc->mbuf = NULL;
|
|
}
|
|
else {
|
|
BBuf* bbuf;
|
|
|
|
n = ONIGENC_CODE_RANGE_NUM(mbr);
|
|
if (n == 0) goto is_null;
|
|
|
|
bbuf = (BBuf* )xmalloc(sizeof(BBuf));
|
|
CHECK_NULL_RETURN_VAL(bbuf, NULL);
|
|
bbuf->alloc = n + 1;
|
|
bbuf->used = n + 1;
|
|
bbuf->p = (UChar* )((void* )mbr);
|
|
|
|
cc->mbuf = bbuf;
|
|
}
|
|
|
|
return node;
|
|
}
|
|
|
|
static Node*
|
|
node_new_ctype(int type)
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_CTYPE;
|
|
NCTYPE(node).type = type;
|
|
return node;
|
|
}
|
|
|
|
static Node*
|
|
node_new_anychar()
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_ANYCHAR;
|
|
return node;
|
|
}
|
|
|
|
static Node*
|
|
node_new_list(Node* left, Node* right)
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_LIST;
|
|
NCONS(node).left = left;
|
|
NCONS(node).right = right;
|
|
return node;
|
|
}
|
|
|
|
extern Node*
|
|
onig_node_new_list(Node* left, Node* right)
|
|
{
|
|
return node_new_list(left, right);
|
|
}
|
|
|
|
static Node*
|
|
node_new_alt(Node* left, Node* right)
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_ALT;
|
|
NCONS(node).left = left;
|
|
NCONS(node).right = right;
|
|
return node;
|
|
}
|
|
|
|
extern Node*
|
|
onig_node_new_anchor(int type)
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_ANCHOR;
|
|
NANCHOR(node).type = type;
|
|
NANCHOR(node).target = NULL;
|
|
NANCHOR(node).char_len = -1;
|
|
return node;
|
|
}
|
|
|
|
static Node*
|
|
node_new_backref(int back_num, int* backrefs, int by_name,
|
|
#ifdef USE_BACKREF_AT_LEVEL
|
|
int exist_level, int nest_level,
|
|
#endif
|
|
ScanEnv* env)
|
|
{
|
|
int i;
|
|
Node* node = node_new();
|
|
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_BACKREF;
|
|
NBACKREF(node).state = 0;
|
|
NBACKREF(node).back_num = back_num;
|
|
NBACKREF(node).back_dynamic = (int* )NULL;
|
|
if (by_name != 0)
|
|
NBACKREF(node).state |= NST_NAME_REF;
|
|
|
|
#ifdef USE_BACKREF_AT_LEVEL
|
|
if (exist_level != 0) {
|
|
NBACKREF(node).state |= NST_NEST_LEVEL;
|
|
NBACKREF(node).nest_level = nest_level;
|
|
}
|
|
#endif
|
|
|
|
for (i = 0; i < back_num; i++) {
|
|
if (backrefs[i] <= env->num_mem &&
|
|
IS_NULL(SCANENV_MEM_NODES(env)[backrefs[i]])) {
|
|
NBACKREF(node).state |= NST_RECURSION; /* /...(\1).../ */
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (back_num <= NODE_BACKREFS_SIZE) {
|
|
for (i = 0; i < back_num; i++)
|
|
NBACKREF(node).back_static[i] = backrefs[i];
|
|
}
|
|
else {
|
|
int* p = (int* )xmalloc(sizeof(int) * back_num);
|
|
if (IS_NULL(p)) {
|
|
onig_node_free(node);
|
|
return NULL;
|
|
}
|
|
NBACKREF(node).back_dynamic = p;
|
|
for (i = 0; i < back_num; i++)
|
|
p[i] = backrefs[i];
|
|
}
|
|
return node;
|
|
}
|
|
|
|
#ifdef USE_SUBEXP_CALL
|
|
static Node*
|
|
node_new_call(UChar* name, UChar* name_end)
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
|
|
node->type = N_CALL;
|
|
NCALL(node).state = 0;
|
|
NCALL(node).ref_num = CALLNODE_REFNUM_UNDEF;
|
|
NCALL(node).target = NULL_NODE;
|
|
NCALL(node).name = name;
|
|
NCALL(node).name_end = name_end;
|
|
return node;
|
|
}
|
|
#endif
|
|
|
|
static Node*
|
|
node_new_qualifier(int lower, int upper, int by_number)
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_QUALIFIER;
|
|
NQUALIFIER(node).state = 0;
|
|
NQUALIFIER(node).target = NULL;
|
|
NQUALIFIER(node).lower = lower;
|
|
NQUALIFIER(node).upper = upper;
|
|
NQUALIFIER(node).greedy = 1;
|
|
NQUALIFIER(node).target_empty_info = NQ_TARGET_ISNOT_EMPTY;
|
|
NQUALIFIER(node).head_exact = NULL_NODE;
|
|
NQUALIFIER(node).next_head_exact = NULL_NODE;
|
|
NQUALIFIER(node).is_refered = 0;
|
|
if (by_number != 0)
|
|
NQUALIFIER(node).state |= NST_BY_NUMBER;
|
|
|
|
#ifdef USE_COMBINATION_EXPLOSION_CHECK
|
|
NQUALIFIER(node).comb_exp_check_num = 0;
|
|
#endif
|
|
|
|
return node;
|
|
}
|
|
|
|
static Node*
|
|
node_new_effect(int type)
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
node->type = N_EFFECT;
|
|
NEFFECT(node).type = type;
|
|
NEFFECT(node).state = 0;
|
|
NEFFECT(node).regnum = 0;
|
|
NEFFECT(node).option = 0;
|
|
NEFFECT(node).target = NULL;
|
|
NEFFECT(node).call_addr = -1;
|
|
NEFFECT(node).opt_count = 0;
|
|
return node;
|
|
}
|
|
|
|
extern Node*
|
|
onig_node_new_effect(int type)
|
|
{
|
|
return node_new_effect(type);
|
|
}
|
|
|
|
static Node*
|
|
node_new_effect_memory(OnigOptionType option, int is_named)
|
|
{
|
|
Node* node = node_new_effect(EFFECT_MEMORY);
|
|
CHECK_NULL_RETURN(node);
|
|
if (is_named != 0)
|
|
SET_EFFECT_STATUS(node, NST_NAMED_GROUP);
|
|
|
|
#ifdef USE_SUBEXP_CALL
|
|
NEFFECT(node).option = option;
|
|
#endif
|
|
return node;
|
|
}
|
|
|
|
static Node*
|
|
node_new_option(OnigOptionType option)
|
|
{
|
|
Node* node = node_new_effect(EFFECT_OPTION);
|
|
CHECK_NULL_RETURN(node);
|
|
NEFFECT(node).option = option;
|
|
return node;
|
|
}
|
|
|
|
extern int
|
|
onig_node_str_cat(Node* node, const UChar* s, const UChar* end)
|
|
{
|
|
int addlen = end - s;
|
|
|
|
if (addlen > 0) {
|
|
int len = NSTRING(node).end - NSTRING(node).s;
|
|
|
|
if (NSTRING(node).capa > 0 || (len + addlen > NODE_STR_BUF_SIZE - 1)) {
|
|
UChar* p;
|
|
int capa = len + addlen + NODE_STR_MARGIN;
|
|
|
|
if (capa <= NSTRING(node).capa) {
|
|
k_strcpy(NSTRING(node).s + len, s, end);
|
|
}
|
|
else {
|
|
if (NSTRING(node).s == NSTRING(node).buf)
|
|
p = strcat_capa_from_static(NSTRING(node).s, NSTRING(node).end,
|
|
s, end, capa);
|
|
else
|
|
p = k_strcat_capa(NSTRING(node).s, NSTRING(node).end, s, end, capa);
|
|
|
|
CHECK_NULL_RETURN_VAL(p, ONIGERR_MEMORY);
|
|
NSTRING(node).s = p;
|
|
NSTRING(node).capa = capa;
|
|
}
|
|
}
|
|
else {
|
|
k_strcpy(NSTRING(node).s + len, s, end);
|
|
}
|
|
NSTRING(node).end = NSTRING(node).s + len + addlen;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
node_str_cat_char(Node* node, UChar c)
|
|
{
|
|
UChar s[1];
|
|
|
|
s[0] = c;
|
|
return onig_node_str_cat(node, s, s + 1);
|
|
}
|
|
|
|
extern void
|
|
onig_node_conv_to_str_node(Node* node, int flag)
|
|
{
|
|
node->type = N_STRING;
|
|
|
|
NSTRING(node).flag = flag;
|
|
NSTRING(node).capa = 0;
|
|
NSTRING(node).s = NSTRING(node).buf;
|
|
NSTRING(node).end = NSTRING(node).buf;
|
|
}
|
|
|
|
extern void
|
|
onig_node_str_clear(Node* node)
|
|
{
|
|
if (NSTRING(node).capa != 0 &&
|
|
IS_NOT_NULL(NSTRING(node).s) && NSTRING(node).s != NSTRING(node).buf) {
|
|
xfree(NSTRING(node).s);
|
|
}
|
|
|
|
NSTRING(node).capa = 0;
|
|
NSTRING(node).flag = 0;
|
|
NSTRING(node).s = NSTRING(node).buf;
|
|
NSTRING(node).end = NSTRING(node).buf;
|
|
}
|
|
|
|
static Node*
|
|
node_new_str(const UChar* s, const UChar* end)
|
|
{
|
|
Node* node = node_new();
|
|
CHECK_NULL_RETURN(node);
|
|
|
|
node->type = N_STRING;
|
|
NSTRING(node).capa = 0;
|
|
NSTRING(node).flag = 0;
|
|
NSTRING(node).s = NSTRING(node).buf;
|
|
NSTRING(node).end = NSTRING(node).buf;
|
|
if (onig_node_str_cat(node, s, end)) {
|
|
onig_node_free(node);
|
|
return NULL;
|
|
}
|
|
return node;
|
|
}
|
|
|
|
extern Node*
|
|
onig_node_new_str(const UChar* s, const UChar* end)
|
|
{
|
|
return node_new_str(s, end);
|
|
}
|
|
|
|
static Node*
|
|
node_new_str_raw(UChar* s, UChar* end)
|
|
{
|
|
Node* node = node_new_str(s, end);
|
|
NSTRING_SET_RAW(node);
|
|
return node;
|
|
}
|
|
|
|
static Node*
|
|
node_new_empty()
|
|
{
|
|
return node_new_str(NULL, NULL);
|
|
}
|
|
|
|
static Node*
|
|
node_new_str_raw_char(UChar c)
|
|
{
|
|
UChar p[1];
|
|
|
|
p[0] = c;
|
|
return node_new_str_raw(p, p + 1);
|
|
}
|
|
|
|
static Node*
|
|
str_node_split_last_char(StrNode* sn, OnigEncoding enc)
|
|
{
|
|
const UChar *p;
|
|
Node* n = NULL_NODE;
|
|
|
|
if (sn->end > sn->s) {
|
|
p = onigenc_get_prev_char_head(enc, sn->s, sn->end);
|
|
if (p && p > sn->s) { /* can be splitted. */
|
|
n = node_new_str(p, sn->end);
|
|
if ((sn->flag & NSTR_RAW) != 0)
|
|
NSTRING_SET_RAW(n);
|
|
sn->end = (UChar* )p;
|
|
}
|
|
}
|
|
return n;
|
|
}
|
|
|
|
static int
|
|
str_node_can_be_split(StrNode* sn, OnigEncoding enc)
|
|
{
|
|
if (sn->end > sn->s) {
|
|
return ((enc_len(enc, sn->s) < sn->end - sn->s) ? 1 : 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
extern int
|
|
onig_scan_unsigned_number(UChar** src, const UChar* end, OnigEncoding enc)
|
|
{
|
|
unsigned int num, val;
|
|
OnigCodePoint c;
|
|
UChar* p = *src;
|
|
PFETCH_READY;
|
|
|
|
num = 0;
|
|
while (!PEND) {
|
|
PFETCH(c);
|
|
if (ONIGENC_IS_CODE_DIGIT(enc, c)) {
|
|
val = (unsigned int )DIGITVAL(c);
|
|
if ((INT_MAX_LIMIT - val) / 10UL < num)
|
|
return -1; /* overflow */
|
|
|
|
num = num * 10 + val;
|
|
}
|
|
else {
|
|
PUNFETCH;
|
|
break;
|
|
}
|
|
}
|
|
*src = p;
|
|
return num;
|
|
}
|
|
|
|
static int
|
|
scan_unsigned_hexadecimal_number(UChar** src, UChar* end, int maxlen,
|
|
OnigEncoding enc)
|
|
{
|
|
OnigCodePoint c;
|
|
unsigned int num, val;
|
|
UChar* p = *src;
|
|
PFETCH_READY;
|
|
|
|
num = 0;
|
|
while (!PEND && maxlen-- != 0) {
|
|
PFETCH(c);
|
|
if (ONIGENC_IS_CODE_XDIGIT(enc, c)) {
|
|
val = (unsigned int )XDIGITVAL(enc,c);
|
|
if ((INT_MAX_LIMIT - val) / 16UL < num)
|
|
return -1; /* overflow */
|
|
|
|
num = (num << 4) + XDIGITVAL(enc,c);
|
|
}
|
|
else {
|
|
PUNFETCH;
|
|
break;
|
|
}
|
|
}
|
|
*src = p;
|
|
return num;
|
|
}
|
|
|
|
static int
|
|
scan_unsigned_octal_number(UChar** src, UChar* end, int maxlen,
|
|
OnigEncoding enc)
|
|
{
|
|
OnigCodePoint c;
|
|
unsigned int num, val;
|
|
UChar* p = *src;
|
|
PFETCH_READY;
|
|
|
|
num = 0;
|
|
while (!PEND && maxlen-- != 0) {
|
|
PFETCH(c);
|
|
if (ONIGENC_IS_CODE_DIGIT(enc, c) && c < '8') {
|
|
val = ODIGITVAL(c);
|
|
if ((INT_MAX_LIMIT - val) / 8UL < num)
|
|
return -1; /* overflow */
|
|
|
|
num = (num << 3) + val;
|
|
}
|
|
else {
|
|
PUNFETCH;
|
|
break;
|
|
}
|
|
}
|
|
*src = p;
|
|
return num;
|
|
}
|
|
|
|
|
|
#define BBUF_WRITE_CODE_POINT(bbuf,pos,code) \
|
|
BBUF_WRITE(bbuf, pos, &(code), SIZE_CODE_POINT)
|
|
|
|
/* data format:
|
|
[n][from-1][to-1][from-2][to-2] ... [from-n][to-n]
|
|
(all data size is OnigCodePoint)
|
|
*/
|
|
static int
|
|
new_code_range(BBuf** pbuf)
|
|
{
|
|
#define INIT_MULTI_BYTE_RANGE_SIZE (SIZE_CODE_POINT * 5)
|
|
int r;
|
|
OnigCodePoint n;
|
|
BBuf* bbuf;
|
|
|
|
bbuf = *pbuf = (BBuf* )xmalloc(sizeof(BBuf));
|
|
CHECK_NULL_RETURN_VAL(*pbuf, ONIGERR_MEMORY);
|
|
r = BBUF_INIT(*pbuf, INIT_MULTI_BYTE_RANGE_SIZE);
|
|
if (r) return r;
|
|
|
|
n = 0;
|
|
BBUF_WRITE_CODE_POINT(bbuf, 0, n);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
add_code_range_to_buf(BBuf** pbuf, OnigCodePoint from, OnigCodePoint to)
|
|
{
|
|
int r, inc_n, pos;
|
|
int low, high, bound, x;
|
|
OnigCodePoint n, *data;
|
|
BBuf* bbuf;
|
|
|
|
if (from > to) {
|
|
n = from; from = to; to = n;
|
|
}
|
|
|
|
if (IS_NULL(*pbuf)) {
|
|
r = new_code_range(pbuf);
|
|
if (r) return r;
|
|
bbuf = *pbuf;
|
|
n = 0;
|
|
}
|
|
else {
|
|
bbuf = *pbuf;
|
|
GET_CODE_POINT(n, bbuf->p);
|
|
}
|
|
data = (OnigCodePoint* )(bbuf->p);
|
|
data++;
|
|
|
|
for (low = 0, bound = n; low < bound; ) {
|
|
x = (low + bound) >> 1;
|
|
if (from > data[x*2 + 1])
|
|
low = x + 1;
|
|
else
|
|
bound = x;
|
|
}
|
|
|
|
for (high = low, bound = n; high < bound; ) {
|
|
x = (high + bound) >> 1;
|
|
if (to >= data[x*2] - 1)
|
|
high = x + 1;
|
|
else
|
|
bound = x;
|
|
}
|
|
|
|
inc_n = low + 1 - high;
|
|
if (n + inc_n > ONIG_MAX_MULTI_BYTE_RANGES_NUM)
|
|
return ONIGERR_TOO_MANY_MULTI_BYTE_RANGES;
|
|
|
|
if (inc_n != 1) {
|
|
if (from > data[low*2])
|
|
from = data[low*2];
|
|
if (to < data[(high - 1)*2 + 1])
|
|
to = data[(high - 1)*2 + 1];
|
|
}
|
|
|
|
if (inc_n != 0 && (OnigCodePoint )high < n) {
|
|
int from_pos = SIZE_CODE_POINT * (1 + high * 2);
|
|
int to_pos = SIZE_CODE_POINT * (1 + (low + 1) * 2);
|
|
int size = (n - high) * 2 * SIZE_CODE_POINT;
|
|
|
|
if (inc_n > 0) {
|
|
BBUF_MOVE_RIGHT(bbuf, from_pos, to_pos, size);
|
|
}
|
|
else {
|
|
BBUF_MOVE_LEFT_REDUCE(bbuf, from_pos, to_pos);
|
|
}
|
|
}
|
|
|
|
pos = SIZE_CODE_POINT * (1 + low * 2);
|
|
BBUF_ENSURE_SIZE(bbuf, pos + SIZE_CODE_POINT * 2);
|
|
BBUF_WRITE_CODE_POINT(bbuf, pos, from);
|
|
BBUF_WRITE_CODE_POINT(bbuf, pos + SIZE_CODE_POINT, to);
|
|
n += inc_n;
|
|
BBUF_WRITE_CODE_POINT(bbuf, 0, n);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
add_code_range(BBuf** pbuf, ScanEnv* env, OnigCodePoint from, OnigCodePoint to)
|
|
{
|
|
if (from > to) {
|
|
if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC))
|
|
return 0;
|
|
else
|
|
return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS;
|
|
}
|
|
|
|
return add_code_range_to_buf(pbuf, from, to);
|
|
}
|
|
|
|
static int
|
|
not_code_range_buf(OnigEncoding enc, BBuf* bbuf, BBuf** pbuf)
|
|
{
|
|
int r, i, n;
|
|
OnigCodePoint pre, from, *data, to = 0;
|
|
|
|
*pbuf = (BBuf* )NULL;
|
|
if (IS_NULL(bbuf)) {
|
|
set_all:
|
|
return SET_ALL_MULTI_BYTE_RANGE(enc, pbuf);
|
|
}
|
|
|
|
data = (OnigCodePoint* )(bbuf->p);
|
|
GET_CODE_POINT(n, data);
|
|
data++;
|
|
if (n <= 0) goto set_all;
|
|
|
|
r = 0;
|
|
pre = MBCODE_START_POS(enc);
|
|
for (i = 0; i < n; i++) {
|
|
from = data[i*2];
|
|
to = data[i*2+1];
|
|
if (pre <= from - 1) {
|
|
r = add_code_range_to_buf(pbuf, pre, from - 1);
|
|
if (r != 0) return r;
|
|
}
|
|
if (to == ~((OnigCodePoint )0)) break;
|
|
pre = to + 1;
|
|
}
|
|
if (to < ~((OnigCodePoint )0)) {
|
|
r = add_code_range_to_buf(pbuf, to + 1, ~((OnigCodePoint )0));
|
|
}
|
|
return r;
|
|
}
|
|
|
|
#define SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2) do {\
|
|
BBuf *tbuf; \
|
|
int tnot; \
|
|
tnot = not1; not1 = not2; not2 = tnot; \
|
|
tbuf = bbuf1; bbuf1 = bbuf2; bbuf2 = tbuf; \
|
|
} while (0)
|
|
|
|
static int
|
|
or_code_range_buf(OnigEncoding enc, BBuf* bbuf1, int not1,
|
|
BBuf* bbuf2, int not2, BBuf** pbuf)
|
|
{
|
|
int r;
|
|
OnigCodePoint i, n1, *data1;
|
|
OnigCodePoint from, to;
|
|
|
|
*pbuf = (BBuf* )NULL;
|
|
if (IS_NULL(bbuf1) && IS_NULL(bbuf2)) {
|
|
if (not1 != 0 || not2 != 0)
|
|
return SET_ALL_MULTI_BYTE_RANGE(enc, pbuf);
|
|
return 0;
|
|
}
|
|
|
|
r = 0;
|
|
if (IS_NULL(bbuf2))
|
|
SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);
|
|
|
|
if (IS_NULL(bbuf1)) {
|
|
if (not1 != 0) {
|
|
return SET_ALL_MULTI_BYTE_RANGE(enc, pbuf);
|
|
}
|
|
else {
|
|
if (not2 == 0) {
|
|
return bbuf_clone(pbuf, bbuf2);
|
|
}
|
|
else {
|
|
return not_code_range_buf(enc, bbuf2, pbuf);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (not1 != 0)
|
|
SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);
|
|
|
|
data1 = (OnigCodePoint* )(bbuf1->p);
|
|
GET_CODE_POINT(n1, data1);
|
|
data1++;
|
|
|
|
if (not2 == 0 && not1 == 0) { /* 1 OR 2 */
|
|
r = bbuf_clone(pbuf, bbuf2);
|
|
}
|
|
else if (not1 == 0) { /* 1 OR (not 2) */
|
|
r = not_code_range_buf(enc, bbuf2, pbuf);
|
|
}
|
|
if (r != 0) return r;
|
|
|
|
for (i = 0; i < n1; i++) {
|
|
from = data1[i*2];
|
|
to = data1[i*2+1];
|
|
r = add_code_range_to_buf(pbuf, from, to);
|
|
if (r != 0) return r;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
and_code_range1(BBuf** pbuf, OnigCodePoint from1, OnigCodePoint to1,
|
|
OnigCodePoint* data, int n)
|
|
{
|
|
int i, r;
|
|
OnigCodePoint from2, to2;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
from2 = data[i*2];
|
|
to2 = data[i*2+1];
|
|
if (from2 < from1) {
|
|
if (to2 < from1) continue;
|
|
else {
|
|
from1 = to2 + 1;
|
|
}
|
|
}
|
|
else if (from2 <= to1) {
|
|
if (to2 < to1) {
|
|
if (from1 <= from2 - 1) {
|
|
r = add_code_range_to_buf(pbuf, from1, from2-1);
|
|
if (r != 0) return r;
|
|
}
|
|
from1 = to2 + 1;
|
|
}
|
|
else {
|
|
to1 = from2 - 1;
|
|
}
|
|
}
|
|
else {
|
|
from1 = from2;
|
|
}
|
|
if (from1 > to1) break;
|
|
}
|
|
if (from1 <= to1) {
|
|
r = add_code_range_to_buf(pbuf, from1, to1);
|
|
if (r != 0) return r;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
and_code_range_buf(BBuf* bbuf1, int not1, BBuf* bbuf2, int not2, BBuf** pbuf)
|
|
{
|
|
int r;
|
|
OnigCodePoint i, j, n1, n2, *data1, *data2;
|
|
OnigCodePoint from, to, from1, to1, from2, to2;
|
|
|
|
*pbuf = (BBuf* )NULL;
|
|
if (IS_NULL(bbuf1)) {
|
|
if (not1 != 0 && IS_NOT_NULL(bbuf2)) /* not1 != 0 -> not2 == 0 */
|
|
return bbuf_clone(pbuf, bbuf2);
|
|
return 0;
|
|
}
|
|
else if (IS_NULL(bbuf2)) {
|
|
if (not2 != 0)
|
|
return bbuf_clone(pbuf, bbuf1);
|
|
return 0;
|
|
}
|
|
|
|
if (not1 != 0)
|
|
SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);
|
|
|
|
data1 = (OnigCodePoint* )(bbuf1->p);
|
|
data2 = (OnigCodePoint* )(bbuf2->p);
|
|
GET_CODE_POINT(n1, data1);
|
|
GET_CODE_POINT(n2, data2);
|
|
data1++;
|
|
data2++;
|
|
|
|
if (not2 == 0 && not1 == 0) { /* 1 AND 2 */
|
|
for (i = 0; i < n1; i++) {
|
|
from1 = data1[i*2];
|
|
to1 = data1[i*2+1];
|
|
for (j = 0; j < n2; j++) {
|
|
from2 = data2[j*2];
|
|
to2 = data2[j*2+1];
|
|
if (from2 > to1) break;
|
|
if (to2 < from1) continue;
|
|
from = MAX(from1, from2);
|
|
to = MIN(to1, to2);
|
|
r = add_code_range_to_buf(pbuf, from, to);
|
|
if (r != 0) return r;
|
|
}
|
|
}
|
|
}
|
|
else if (not1 == 0) { /* 1 AND (not 2) */
|
|
for (i = 0; i < n1; i++) {
|
|
from1 = data1[i*2];
|
|
to1 = data1[i*2+1];
|
|
r = and_code_range1(pbuf, from1, to1, data2, n2);
|
|
if (r != 0) return r;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
clear_not_flag_cclass(CClassNode* cc, OnigEncoding enc)
|
|
{
|
|
BBuf *tbuf;
|
|
int r;
|
|
|
|
if (IS_CCLASS_NOT(cc)) {
|
|
bitset_invert(cc->bs);
|
|
|
|
if (! ONIGENC_IS_SINGLEBYTE(enc)) {
|
|
r = not_code_range_buf(enc, cc->mbuf, &tbuf);
|
|
if (r != 0) return r;
|
|
|
|
bbuf_free(cc->mbuf);
|
|
cc->mbuf = tbuf;
|
|
}
|
|
|
|
CCLASS_CLEAR_NOT(cc);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
and_cclass(CClassNode* dest, CClassNode* cc, OnigEncoding enc)
|
|
{
|
|
int r, not1, not2;
|
|
BBuf *buf1, *buf2, *pbuf;
|
|
BitSetRef bsr1, bsr2;
|
|
BitSet bs1, bs2;
|
|
|
|
not1 = IS_CCLASS_NOT(dest);
|
|
bsr1 = dest->bs;
|
|
buf1 = dest->mbuf;
|
|
not2 = IS_CCLASS_NOT(cc);
|
|
bsr2 = cc->bs;
|
|
buf2 = cc->mbuf;
|
|
|
|
if (not1 != 0) {
|
|
bitset_invert_to(bsr1, bs1);
|
|
bsr1 = bs1;
|
|
}
|
|
if (not2 != 0) {
|
|
bitset_invert_to(bsr2, bs2);
|
|
bsr2 = bs2;
|
|
}
|
|
bitset_and(bsr1, bsr2);
|
|
if (bsr1 != dest->bs) {
|
|
bitset_copy(dest->bs, bsr1);
|
|
bsr1 = dest->bs;
|
|
}
|
|
if (not1 != 0) {
|
|
bitset_invert(dest->bs);
|
|
}
|
|
|
|
if (! ONIGENC_IS_SINGLEBYTE(enc)) {
|
|
if (not1 != 0 && not2 != 0) {
|
|
r = or_code_range_buf(enc, buf1, 0, buf2, 0, &pbuf);
|
|
}
|
|
else {
|
|
r = and_code_range_buf(buf1, not1, buf2, not2, &pbuf);
|
|
if (r == 0 && not1 != 0) {
|
|
BBuf *tbuf;
|
|
r = not_code_range_buf(enc, pbuf, &tbuf);
|
|
if (r != 0) {
|
|
bbuf_free(pbuf);
|
|
return r;
|
|
}
|
|
bbuf_free(pbuf);
|
|
pbuf = tbuf;
|
|
}
|
|
}
|
|
if (r != 0) return r;
|
|
|
|
dest->mbuf = pbuf;
|
|
bbuf_free(buf1);
|
|
return r;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
or_cclass(CClassNode* dest, CClassNode* cc, OnigEncoding enc)
|
|
{
|
|
int r, not1, not2;
|
|
BBuf *buf1, *buf2, *pbuf;
|
|
BitSetRef bsr1, bsr2;
|
|
BitSet bs1, bs2;
|
|
|
|
not1 = IS_CCLASS_NOT(dest);
|
|
bsr1 = dest->bs;
|
|
buf1 = dest->mbuf;
|
|
not2 = IS_CCLASS_NOT(cc);
|
|
bsr2 = cc->bs;
|
|
buf2 = cc->mbuf;
|
|
|
|
if (not1 != 0) {
|
|
bitset_invert_to(bsr1, bs1);
|
|
bsr1 = bs1;
|
|
}
|
|
if (not2 != 0) {
|
|
bitset_invert_to(bsr2, bs2);
|
|
bsr2 = bs2;
|
|
}
|
|
bitset_or(bsr1, bsr2);
|
|
if (bsr1 != dest->bs) {
|
|
bitset_copy(dest->bs, bsr1);
|
|
bsr1 = dest->bs;
|
|
}
|
|
if (not1 != 0) {
|
|
bitset_invert(dest->bs);
|
|
}
|
|
|
|
if (! ONIGENC_IS_SINGLEBYTE(enc)) {
|
|
if (not1 != 0 && not2 != 0) {
|
|
r = and_code_range_buf(buf1, 0, buf2, 0, &pbuf);
|
|
}
|
|
else {
|
|
r = or_code_range_buf(enc, buf1, not1, buf2, not2, &pbuf);
|
|
if (r == 0 && not1 != 0) {
|
|
BBuf *tbuf;
|
|
r = not_code_range_buf(enc, pbuf, &tbuf);
|
|
if (r != 0) {
|
|
bbuf_free(pbuf);
|
|
return r;
|
|
}
|
|
bbuf_free(pbuf);
|
|
pbuf = tbuf;
|
|
}
|
|
}
|
|
if (r != 0) return r;
|
|
|
|
dest->mbuf = pbuf;
|
|
bbuf_free(buf1);
|
|
return r;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
conv_backslash_value(int c, ScanEnv* env)
|
|
{
|
|
if (IS_SYNTAX_OP(env->syntax, ONIG_SYN_OP_ESC_CONTROL_CHARS)) {
|
|
switch (c) {
|
|
case 'n': return '\n';
|
|
case 't': return '\t';
|
|
case 'r': return '\r';
|
|
case 'f': return '\f';
|
|
case 'a': return '\007';
|
|
case 'b': return '\010';
|
|
case 'e': return '\033';
|
|
case 'v':
|
|
if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_ESC_V_VTAB))
|
|
return '\v';
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return c;
|
|
}
|
|
|
|
static int
|
|
is_invalid_qualifier_target(Node* node)
|
|
{
|
|
switch (NTYPE(node)) {
|
|
case N_ANCHOR:
|
|
return 1;
|
|
break;
|
|
|
|
case N_EFFECT:
|
|
if (NEFFECT(node).type == EFFECT_OPTION)
|
|
return is_invalid_qualifier_target(NEFFECT(node).target);
|
|
break;
|
|
|
|
case N_LIST: /* ex. (?:\G\A)* */
|
|
do {
|
|
if (! is_invalid_qualifier_target(NCONS(node).left)) return 0;
|
|
} while (IS_NOT_NULL(node = NCONS(node).right));
|
|
return 0;
|
|
break;
|
|
|
|
case N_ALT: /* ex. (?:abc|\A)* */
|
|
do {
|
|
if (is_invalid_qualifier_target(NCONS(node).left)) return 1;
|
|
} while (IS_NOT_NULL(node = NCONS(node).right));
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* ?:0, *:1, +:2, ??:3, *?:4, +?:5 */
|
|
static int
|
|
popular_qualifier_num(QualifierNode* qf)
|
|
{
|
|
if (qf->greedy) {
|
|
if (qf->lower == 0) {
|
|
if (qf->upper == 1) return 0;
|
|
else if (IS_REPEAT_INFINITE(qf->upper)) return 1;
|
|
}
|
|
else if (qf->lower == 1) {
|
|
if (IS_REPEAT_INFINITE(qf->upper)) return 2;
|
|
}
|
|
}
|
|
else {
|
|
if (qf->lower == 0) {
|
|
if (qf->upper == 1) return 3;
|
|
else if (IS_REPEAT_INFINITE(qf->upper)) return 4;
|
|
}
|
|
else if (qf->lower == 1) {
|
|
if (IS_REPEAT_INFINITE(qf->upper)) return 5;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
enum ReduceType {
|
|
RQ_ASIS = 0, /* as is */
|
|
RQ_DEL = 1, /* delete parent */
|
|
RQ_A, /* to '*' */
|
|
RQ_AQ, /* to '*?' */
|
|
RQ_QQ, /* to '??' */
|
|
RQ_P_QQ, /* to '+)??' */
|
|
RQ_PQ_Q /* to '+?)?' */
|
|
};
|
|
|
|
static enum ReduceType ReduceTypeTable[6][6] = {
|
|
{RQ_DEL, RQ_A, RQ_A, RQ_QQ, RQ_AQ, RQ_ASIS}, /* '?' */
|
|
{RQ_DEL, RQ_DEL, RQ_DEL, RQ_P_QQ, RQ_P_QQ, RQ_DEL}, /* '*' */
|
|
{RQ_A, RQ_A, RQ_DEL, RQ_ASIS, RQ_P_QQ, RQ_DEL}, /* '+' */
|
|
{RQ_DEL, RQ_AQ, RQ_AQ, RQ_DEL, RQ_AQ, RQ_AQ}, /* '??' */
|
|
{RQ_DEL, RQ_DEL, RQ_DEL, RQ_DEL, RQ_DEL, RQ_DEL}, /* '*?' */
|
|
{RQ_ASIS, RQ_PQ_Q, RQ_DEL, RQ_AQ, RQ_AQ, RQ_DEL} /* '+?' */
|
|
};
|
|
|
|
extern void
|
|
onig_reduce_nested_qualifier(Node* pnode, Node* cnode)
|
|
{
|
|
int pnum, cnum;
|
|
QualifierNode *p, *c;
|
|
|
|
p = &(NQUALIFIER(pnode));
|
|
c = &(NQUALIFIER(cnode));
|
|
pnum = popular_qualifier_num(p);
|
|
cnum = popular_qualifier_num(c);
|
|
|
|
switch(ReduceTypeTable[cnum][pnum]) {
|
|
case RQ_DEL:
|
|
*p = *c;
|
|
break;
|
|
case RQ_A:
|
|
p->target = c->target;
|
|
p->lower = 0; p->upper = REPEAT_INFINITE; p->greedy = 1;
|
|
break;
|
|
case RQ_AQ:
|
|
p->target = c->target;
|
|
p->lower = 0; p->upper = REPEAT_INFINITE; p->greedy = 0;
|
|
break;
|
|
case RQ_QQ:
|
|
p->target = c->target;
|
|
p->lower = 0; p->upper = 1; p->greedy = 0;
|
|
break;
|
|
case RQ_P_QQ:
|
|
p->target = cnode;
|
|
p->lower = 0; p->upper = 1; p->greedy = 0;
|
|
c->lower = 1; c->upper = REPEAT_INFINITE; c->greedy = 1;
|
|
return ;
|
|
break;
|
|
case RQ_PQ_Q:
|
|
p->target = cnode;
|
|
p->lower = 0; p->upper = 1; p->greedy = 1;
|
|
c->lower = 1; c->upper = REPEAT_INFINITE; c->greedy = 0;
|
|
return ;
|
|
break;
|
|
case RQ_ASIS:
|
|
p->target = cnode;
|
|
return ;
|
|
break;
|
|
}
|
|
|
|
c->target = NULL_NODE;
|
|
onig_node_free(cnode);
|
|
}
|
|
|
|
|
|
enum TokenSyms {
|
|
TK_EOT = 0, /* end of token */
|
|
TK_RAW_BYTE = 1,
|
|
TK_CHAR,
|
|
TK_STRING,
|
|
TK_CODE_POINT,
|
|
TK_ANYCHAR,
|
|
TK_CHAR_TYPE,
|
|
TK_BACKREF,
|
|
TK_CALL,
|
|
TK_ANCHOR,
|
|
TK_OP_REPEAT,
|
|
TK_INTERVAL,
|
|
TK_ANYCHAR_ANYTIME, /* SQL '%' == .* */
|
|
TK_ALT,
|
|
TK_SUBEXP_OPEN,
|
|
TK_SUBEXP_CLOSE,
|
|
TK_CC_OPEN,
|
|
TK_QUOTE_OPEN,
|
|
TK_CHAR_PROPERTY, /* \p{...}, \P{...} */
|
|
/* in cc */
|
|
TK_CC_CLOSE,
|
|
TK_CC_RANGE,
|
|
TK_POSIX_BRACKET_OPEN,
|
|
TK_CC_AND, /* && */
|
|
TK_CC_CC_OPEN /* [ */
|
|
};
|
|
|
|
typedef struct {
|
|
enum TokenSyms type;
|
|
int escaped;
|
|
int base; /* is number: 8, 16 (used in [....]) */
|
|
UChar* backp;
|
|
union {
|
|
UChar* s;
|
|
int c;
|
|
OnigCodePoint code;
|
|
int anchor;
|
|
int subtype;
|
|
struct {
|
|
int lower;
|
|
int upper;
|
|
int greedy;
|
|
int possessive;
|
|
} repeat;
|
|
struct {
|
|
int num;
|
|
int ref1;
|
|
int* refs;
|
|
int by_name;
|
|
#ifdef USE_BACKREF_AT_LEVEL
|
|
int exist_level;
|
|
int level; /* \k<name+n> */
|
|
#endif
|
|
} backref;
|
|
struct {
|
|
UChar* name;
|
|
UChar* name_end;
|
|
} call;
|
|
struct {
|
|
int not;
|
|
} prop;
|
|
} u;
|
|
} OnigToken;
|
|
|
|
|
|
static int
|
|
fetch_range_qualifier(UChar** src, UChar* end, OnigToken* tok, ScanEnv* env)
|
|
{
|
|
int low, up, syn_allow, non_low = 0;
|
|
int r = 0;
|
|
OnigCodePoint c;
|
|
OnigEncoding enc = env->enc;
|
|
UChar* p = *src;
|
|
PFETCH_READY;
|
|
|
|
syn_allow = IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_INVALID_INTERVAL);
|
|
|
|
if (PEND) {
|
|
if (syn_allow)
|
|
return 1; /* "....{" : OK! */
|
|
else
|
|
return ONIGERR_END_PATTERN_AT_LEFT_BRACE; /* "....{" syntax error */
|
|
}
|
|
|
|
if (! syn_allow) {
|
|
c = PPEEK;
|
|
if (c == ')' || c == '(' || c == '|') {
|
|
return ONIGERR_END_PATTERN_AT_LEFT_BRACE;
|
|
}
|
|
}
|
|
|
|
low = onig_scan_unsigned_number(&p, end, env->enc);
|
|
if (low < 0) return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE;
|
|
if (low > ONIG_MAX_REPEAT_NUM)
|
|
return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE;
|
|
|
|
if (p == *src) { /* can't read low */
|
|
if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_INTERVAL_LOW_ABBREV)) {
|
|
/* allow {,n} as {0,n} */
|
|
low = 0;
|
|
non_low = 1;
|
|
}
|
|
else
|
|
goto invalid;
|
|
}
|
|
|
|
if (PEND) goto invalid;
|
|
PFETCH(c);
|
|
if (c == ',') {
|
|
UChar* prev = p;
|
|
up = onig_scan_unsigned_number(&p, end, env->enc);
|
|
if (up < 0) return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE;
|
|
if (up > ONIG_MAX_REPEAT_NUM)
|
|
return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE;
|
|
|
|
if (p == prev) {
|
|
if (non_low != 0)
|
|
goto invalid;
|
|
up = REPEAT_INFINITE; /* {n,} : {n,infinite} */
|
|
}
|
|
}
|
|
else {
|
|
if (non_low != 0)
|
|
goto invalid;
|
|
|
|
PUNFETCH;
|
|
up = low; /* {n} : exact n times */
|
|
r = 2; /* fixed */
|
|
}
|
|
|
|
if (PEND) goto invalid;
|
|
PFETCH(c);
|
|
if (IS_SYNTAX_OP(env->syntax, ONIG_SYN_OP_ESC_BRACE_INTERVAL)) {
|
|
if (c != MC_ESC(enc)) goto invalid;
|
|
PFETCH(c);
|
|
}
|
|
if (c != '}') goto invalid;
|
|
|
|
if (!IS_REPEAT_INFINITE(up) && low > up) {
|
|
return ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE;
|
|
}
|
|
|
|
tok->type = TK_INTERVAL;
|
|
tok->u.repeat.lower = low;
|
|
tok->u.repeat.upper = up;
|
|
*src = p;
|
|
return r; /* 0: normal {n,m}, 2: fixed {n} */
|
|
|
|
invalid:
|
|
if (syn_allow)
|
|
return 1; /* OK */
|
|
else
|
|
return ONIGERR_INVALID_REPEAT_RANGE_PATTERN;
|
|
}
|
|
|
|
/* \M-, \C-, \c, or \... */
|
|
static int
|
|
fetch_escaped_value(UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
int v;
|
|
OnigCodePoint c;
|
|
OnigEncoding enc = env->enc;
|
|
UChar* p = *src;
|
|
PFETCH_READY;
|
|
|
|
if (PEND) return ONIGERR_END_PATTERN_AT_ESCAPE;
|
|
|
|
PFETCH(c);
|
|
switch (c) {
|
|
case 'M':
|
|
if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_ESC_CAPITAL_M_BAR_META)) {
|
|
if (PEND) return ONIGERR_END_PATTERN_AT_META;
|
|
PFETCH(c);
|
|
if (c != '-') return ONIGERR_META_CODE_SYNTAX;
|
|
if (PEND) return ONIGERR_END_PATTERN_AT_META;
|
|
PFETCH(c);
|
|
if (c == MC_ESC(enc)) {
|
|
v = fetch_escaped_value(&p, end, env);
|
|
if (v < 0) return v;
|
|
c = (OnigCodePoint )v;
|
|
}
|
|
c = ((c & 0xff) | 0x80);
|
|
}
|
|
else
|
|
goto backslash;
|
|
break;
|
|
|
|
case 'C':
|
|
if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_ESC_CAPITAL_C_BAR_CONTROL)) {
|
|
if (PEND) return ONIGERR_END_PATTERN_AT_CONTROL;
|
|
PFETCH(c);
|
|
if (c != '-') return ONIGERR_CONTROL_CODE_SYNTAX;
|
|
goto control;
|
|
}
|
|
else
|
|
goto backslash;
|
|
|
|
case 'c':
|
|
if (IS_SYNTAX_OP(env->syntax, ONIG_SYN_OP_ESC_C_CONTROL)) {
|
|
control:
|
|
if (PEND) return ONIGERR_END_PATTERN_AT_CONTROL;
|
|
PFETCH(c);
|
|
if (c == '?') {
|
|
c = 0177;
|
|
}
|
|
else {
|
|
if (c == MC_ESC(enc)) {
|
|
v = fetch_escaped_value(&p, end, env);
|
|
if (v < 0) return v;
|
|
c = (OnigCodePoint )v;
|
|
}
|
|
c &= 0x9f;
|
|
}
|
|
break;
|
|
}
|
|
/* fall through */
|
|
|
|
default:
|
|
{
|
|
backslash:
|
|
c = conv_backslash_value(c, env);
|
|
}
|
|
break;
|
|
}
|
|
|
|
*src = p;
|
|
return c;
|
|
}
|
|
|
|
static int fetch_token(OnigToken* tok, UChar** src, UChar* end, ScanEnv* env);
|
|
|
|
#ifdef USE_NAMED_GROUP
|
|
#ifdef USE_BACKREF_AT_LEVEL
|
|
/*
|
|
\k<name+n>, \k<name-n>
|
|
*/
|
|
static int
|
|
fetch_name_with_level(UChar** src, UChar* end, UChar** rname_end
|
|
, ScanEnv* env, int* level)
|
|
{
|
|
int r, exist_level = 0;
|
|
OnigCodePoint c = 0;
|
|
OnigCodePoint first_code;
|
|
OnigEncoding enc = env->enc;
|
|
UChar *name_end;
|
|
UChar *p = *src;
|
|
PFETCH_READY;
|
|
|
|
name_end = end;
|
|
r = 0;
|
|
if (PEND) {
|
|
return ONIGERR_EMPTY_GROUP_NAME;
|
|
}
|
|
else {
|
|
PFETCH(c);
|
|
first_code = c;
|
|
if (c == '>')
|
|
return ONIGERR_EMPTY_GROUP_NAME;
|
|
|
|
if (!ONIGENC_IS_CODE_WORD(enc, c)) {
|
|
r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
|
|
}
|
|
}
|
|
|
|
while (!PEND) {
|
|
name_end = p;
|
|
PFETCH(c);
|
|
if (c == '>' || c == ')' || c == '+' || c == '-') break;
|
|
|
|
if (!ONIGENC_IS_CODE_WORD(enc, c)) {
|
|
r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
|
|
}
|
|
}
|
|
|
|
if (c != '>') {
|
|
if (c == '+' || c == '-') {
|
|
int num;
|
|
int flag = (c == '-' ? -1 : 1);
|
|
|
|
PFETCH(c);
|
|
if (! ONIGENC_IS_CODE_DIGIT(enc, c)) goto err;
|
|
PUNFETCH;
|
|
num = onig_scan_unsigned_number(&p, end, enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
|
|
*level = (num * flag);
|
|
exist_level = 1;
|
|
|
|
PFETCH(c);
|
|
if (c == '>')
|
|
goto first_check;
|
|
}
|
|
|
|
err:
|
|
r = ONIGERR_INVALID_GROUP_NAME;
|
|
name_end = end;
|
|
}
|
|
else {
|
|
first_check:
|
|
if (ONIGENC_IS_CODE_ASCII(first_code) &&
|
|
ONIGENC_IS_CODE_UPPER(enc, first_code))
|
|
r = ONIGERR_INVALID_GROUP_NAME;
|
|
}
|
|
|
|
if (r == 0) {
|
|
*rname_end = name_end;
|
|
*src = p;
|
|
return (exist_level ? 1 : 0);
|
|
}
|
|
else {
|
|
onig_scan_env_set_error_string(env, r, *src, name_end);
|
|
return r;
|
|
}
|
|
}
|
|
#endif /* USE_BACKREF_AT_LEVEL */
|
|
|
|
/*
|
|
def: 0 -> define name (don't allow number name)
|
|
1 -> reference name (allow number name)
|
|
*/
|
|
static int
|
|
fetch_name(UChar** src, UChar* end, UChar** rname_end, ScanEnv* env, int ref)
|
|
{
|
|
int r, is_num;
|
|
OnigCodePoint c = 0;
|
|
OnigCodePoint first_code;
|
|
OnigEncoding enc = env->enc;
|
|
UChar *name_end;
|
|
UChar *p = *src;
|
|
PFETCH_READY;
|
|
|
|
name_end = end;
|
|
r = 0;
|
|
is_num = 0;
|
|
if (PEND) {
|
|
return ONIGERR_EMPTY_GROUP_NAME;
|
|
}
|
|
else {
|
|
PFETCH(c);
|
|
first_code = c;
|
|
if (c == '>')
|
|
return ONIGERR_EMPTY_GROUP_NAME;
|
|
|
|
if (ONIGENC_IS_CODE_DIGIT(enc, c)) {
|
|
if (ref == 1)
|
|
is_num = 1;
|
|
else {
|
|
r = ONIGERR_INVALID_GROUP_NAME;
|
|
}
|
|
}
|
|
else if (!ONIGENC_IS_CODE_WORD(enc, c)) {
|
|
r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
|
|
}
|
|
}
|
|
|
|
while (!PEND) {
|
|
name_end = p;
|
|
PFETCH(c);
|
|
if (c == '>' || c == ')') break;
|
|
|
|
if (is_num == 1) {
|
|
if (! ONIGENC_IS_CODE_DIGIT(enc, c)) {
|
|
if (!ONIGENC_IS_CODE_WORD(enc, c))
|
|
r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
|
|
else
|
|
r = ONIGERR_INVALID_GROUP_NAME;
|
|
}
|
|
}
|
|
else {
|
|
if (!ONIGENC_IS_CODE_WORD(enc, c)) {
|
|
r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (c != '>') {
|
|
r = ONIGERR_INVALID_GROUP_NAME;
|
|
name_end = end;
|
|
}
|
|
else {
|
|
if (ONIGENC_IS_CODE_ASCII(first_code) &&
|
|
ONIGENC_IS_CODE_UPPER(enc, first_code))
|
|
r = ONIGERR_INVALID_GROUP_NAME;
|
|
}
|
|
|
|
if (r == 0) {
|
|
*rname_end = name_end;
|
|
*src = p;
|
|
return 0;
|
|
}
|
|
else {
|
|
onig_scan_env_set_error_string(env, r, *src, name_end);
|
|
return r;
|
|
}
|
|
}
|
|
#else
|
|
static int
|
|
fetch_name(UChar** src, UChar* end, UChar** rname_end, ScanEnv* env, int ref)
|
|
{
|
|
int r, len;
|
|
OnigCodePoint c = 0;
|
|
UChar *name_end;
|
|
OnigEncoding enc = env->enc;
|
|
UChar *p = *src;
|
|
PFETCH_READY;
|
|
|
|
r = 0;
|
|
while (!PEND) {
|
|
name_end = p;
|
|
if (enc_len(enc, p) > 1)
|
|
r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
|
|
|
|
PFETCH(c);
|
|
if (c == '>' || c == ')') break;
|
|
if (! ONIGENC_IS_CODE_DIGIT(enc, c))
|
|
r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
|
|
}
|
|
if (c != '>') {
|
|
r = ONIGERR_INVALID_GROUP_NAME;
|
|
name_end = end;
|
|
}
|
|
|
|
if (r == 0) {
|
|
*rname_end = name_end;
|
|
*src = p;
|
|
return 0;
|
|
}
|
|
else {
|
|
err:
|
|
onig_scan_env_set_error_string(env, r, *src, name_end);
|
|
return r;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
CC_ESC_WARN(ScanEnv* env, UChar *c)
|
|
{
|
|
if (onig_warn == onig_null_warn) return ;
|
|
|
|
if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_WARN_CC_OP_NOT_ESCAPED) &&
|
|
IS_SYNTAX_BV(env->syntax, ONIG_SYN_BACKSLASH_ESCAPE_IN_CC)) {
|
|
UChar buf[WARN_BUFSIZE];
|
|
onig_snprintf_with_pattern(buf, WARN_BUFSIZE, env->enc,
|
|
env->pattern, env->pattern_end,
|
|
(UChar* )"character class has '%s' without escape", c);
|
|
(*onig_warn)((char* )buf);
|
|
}
|
|
}
|
|
|
|
static void
|
|
CCEND_ESC_WARN(ScanEnv* env, UChar* c)
|
|
{
|
|
if (onig_warn == onig_null_warn) return ;
|
|
|
|
if (IS_SYNTAX_BV((env)->syntax, ONIG_SYN_WARN_CC_OP_NOT_ESCAPED)) {
|
|
UChar buf[WARN_BUFSIZE];
|
|
onig_snprintf_with_pattern(buf, WARN_BUFSIZE, (env)->enc,
|
|
(env)->pattern, (env)->pattern_end,
|
|
(UChar* )"regular expression has '%s' without escape", c);
|
|
(*onig_warn)((char* )buf);
|
|
}
|
|
}
|
|
|
|
static UChar*
|
|
find_str_position(OnigCodePoint s[], int n, UChar* from, UChar* to,
|
|
UChar **next, OnigEncoding enc)
|
|
{
|
|
int i;
|
|
OnigCodePoint x;
|
|
UChar *q;
|
|
UChar *p = from;
|
|
|
|
while (p < to) {
|
|
x = ONIGENC_MBC_TO_CODE(enc, p, to);
|
|
q = p + enc_len(enc, p);
|
|
if (x == s[0]) {
|
|
for (i = 1; i < n && q < to; i++) {
|
|
x = ONIGENC_MBC_TO_CODE(enc, q, to);
|
|
if (x != s[i]) break;
|
|
q += enc_len(enc, q);
|
|
}
|
|
if (i >= n) {
|
|
if (IS_NOT_NULL(next))
|
|
*next = q;
|
|
return p;
|
|
}
|
|
}
|
|
p = q;
|
|
}
|
|
return NULL_UCHARP;
|
|
}
|
|
|
|
static int
|
|
str_exist_check_with_esc(OnigCodePoint s[], int n, UChar* from, UChar* to,
|
|
OnigCodePoint bad, OnigEncoding enc)
|
|
{
|
|
int i, in_esc;
|
|
OnigCodePoint x;
|
|
UChar *q;
|
|
UChar *p = from;
|
|
|
|
in_esc = 0;
|
|
while (p < to) {
|
|
if (in_esc) {
|
|
in_esc = 0;
|
|
p += enc_len(enc, p);
|
|
}
|
|
else {
|
|
x = ONIGENC_MBC_TO_CODE(enc, p, to);
|
|
q = p + enc_len(enc, p);
|
|
if (x == s[0]) {
|
|
for (i = 1; i < n && q < to; i++) {
|
|
x = ONIGENC_MBC_TO_CODE(enc, q, to);
|
|
if (x != s[i]) break;
|
|
q += enc_len(enc, q);
|
|
}
|
|
if (i >= n) return 1;
|
|
p += enc_len(enc, p);
|
|
}
|
|
else {
|
|
x = ONIGENC_MBC_TO_CODE(enc, p, to);
|
|
if (x == bad) return 0;
|
|
else if (x == MC_ESC(enc)) in_esc = 1;
|
|
p = q;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
fetch_token_in_cc(OnigToken* tok, UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
int num;
|
|
OnigCodePoint c, c2;
|
|
OnigSyntaxType* syn = env->syntax;
|
|
OnigEncoding enc = env->enc;
|
|
UChar* prev;
|
|
UChar* p = *src;
|
|
PFETCH_READY;
|
|
|
|
if (PEND) {
|
|
tok->type = TK_EOT;
|
|
return tok->type;
|
|
}
|
|
|
|
PFETCH(c);
|
|
tok->type = TK_CHAR;
|
|
tok->base = 0;
|
|
tok->u.c = c;
|
|
tok->escaped = 0;
|
|
|
|
if (c == ']') {
|
|
tok->type = TK_CC_CLOSE;
|
|
}
|
|
else if (c == '-') {
|
|
tok->type = TK_CC_RANGE;
|
|
}
|
|
else if (c == MC_ESC(enc)) {
|
|
if (! IS_SYNTAX_BV(syn, ONIG_SYN_BACKSLASH_ESCAPE_IN_CC))
|
|
goto end;
|
|
|
|
if (PEND) return ONIGERR_END_PATTERN_AT_ESCAPE;
|
|
|
|
PFETCH(c);
|
|
tok->escaped = 1;
|
|
tok->u.c = c;
|
|
switch (c) {
|
|
case 'w':
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_WORD;
|
|
break;
|
|
case 'W':
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_NOT_WORD;
|
|
break;
|
|
case 'd':
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_DIGIT;
|
|
break;
|
|
case 'D':
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_NOT_DIGIT;
|
|
break;
|
|
case 's':
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_WHITE_SPACE;
|
|
break;
|
|
case 'S':
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_NOT_WHITE_SPACE;
|
|
break;
|
|
case 'h':
|
|
if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_H_XDIGIT)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_XDIGIT;
|
|
break;
|
|
case 'H':
|
|
if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_H_XDIGIT)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_NOT_XDIGIT;
|
|
break;
|
|
|
|
case 'p':
|
|
case 'P':
|
|
c2 = PPEEK;
|
|
if (c2 == '{' &&
|
|
IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY)) {
|
|
PINC;
|
|
tok->type = TK_CHAR_PROPERTY;
|
|
tok->u.prop.not = (c == 'P' ? 1 : 0);
|
|
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT)) {
|
|
PFETCH(c2);
|
|
if (c2 == '^') {
|
|
tok->u.prop.not = (tok->u.prop.not == 0 ? 1 : 0);
|
|
}
|
|
else
|
|
PUNFETCH;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'x':
|
|
if (PEND) break;
|
|
|
|
prev = p;
|
|
if (PPEEK_IS('{') && IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_X_BRACE_HEX8)) {
|
|
PINC;
|
|
num = scan_unsigned_hexadecimal_number(&p, end, 8, enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE;
|
|
if (!PEND) {
|
|
c2 = PPEEK;
|
|
if (ONIGENC_IS_CODE_XDIGIT(enc, c2))
|
|
return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE;
|
|
}
|
|
|
|
if (p > prev + enc_len(enc, prev) && !PEND && (PPEEK_IS('}'))) {
|
|
PINC;
|
|
tok->type = TK_CODE_POINT;
|
|
tok->base = 16;
|
|
tok->u.code = (OnigCodePoint )num;
|
|
}
|
|
else {
|
|
/* can't read nothing or invalid format */
|
|
p = prev;
|
|
}
|
|
}
|
|
else if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_X_HEX2)) {
|
|
num = scan_unsigned_hexadecimal_number(&p, end, 2, enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
|
|
if (p == prev) { /* can't read nothing. */
|
|
num = 0; /* but, it's not error */
|
|
}
|
|
tok->type = TK_RAW_BYTE;
|
|
tok->base = 16;
|
|
tok->u.c = num;
|
|
}
|
|
break;
|
|
|
|
case 'u':
|
|
if (PEND) break;
|
|
|
|
prev = p;
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_U_HEX4)) {
|
|
num = scan_unsigned_hexadecimal_number(&p, end, 4, enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
|
|
if (p == prev) { /* can't read nothing. */
|
|
num = 0; /* but, it's not error */
|
|
}
|
|
tok->type = TK_CODE_POINT;
|
|
tok->base = 16;
|
|
tok->u.code = (OnigCodePoint )num;
|
|
}
|
|
break;
|
|
|
|
case '0':
|
|
case '1': case '2': case '3': case '4': case '5': case '6': case '7':
|
|
if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_OCTAL3)) {
|
|
PUNFETCH;
|
|
prev = p;
|
|
num = scan_unsigned_octal_number(&p, end, 3, enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
|
|
if (p == prev) { /* can't read nothing. */
|
|
num = 0; /* but, it's not error */
|
|
}
|
|
tok->type = TK_RAW_BYTE;
|
|
tok->base = 8;
|
|
tok->u.c = num;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
PUNFETCH;
|
|
num = fetch_escaped_value(&p, end, env);
|
|
if (num < 0) return num;
|
|
if (tok->u.c != num) {
|
|
tok->u.code = (OnigCodePoint )num;
|
|
tok->type = TK_CODE_POINT;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else if (c == '[') {
|
|
if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_POSIX_BRACKET) && (PPEEK_IS(':'))) {
|
|
OnigCodePoint send[] = { (OnigCodePoint )':', (OnigCodePoint )']' };
|
|
tok->backp = p; /* point at '[' is readed */
|
|
PINC;
|
|
if (str_exist_check_with_esc(send, 2, p, end,
|
|
(OnigCodePoint )']', enc)) {
|
|
tok->type = TK_POSIX_BRACKET_OPEN;
|
|
}
|
|
else {
|
|
PUNFETCH;
|
|
goto cc_in_cc;
|
|
}
|
|
}
|
|
else {
|
|
cc_in_cc:
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_CCLASS_SET_OP)) {
|
|
tok->type = TK_CC_CC_OPEN;
|
|
}
|
|
else {
|
|
CC_ESC_WARN(env, (UChar* )"[");
|
|
}
|
|
}
|
|
}
|
|
else if (c == '&') {
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_CCLASS_SET_OP) &&
|
|
!PEND && (PPEEK_IS('&'))) {
|
|
PINC;
|
|
tok->type = TK_CC_AND;
|
|
}
|
|
}
|
|
|
|
end:
|
|
*src = p;
|
|
return tok->type;
|
|
}
|
|
|
|
static int
|
|
fetch_token(OnigToken* tok, UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
int r, num;
|
|
OnigCodePoint c;
|
|
OnigEncoding enc = env->enc;
|
|
OnigSyntaxType* syn = env->syntax;
|
|
UChar* prev;
|
|
UChar* p = *src;
|
|
PFETCH_READY;
|
|
|
|
start:
|
|
if (PEND) {
|
|
tok->type = TK_EOT;
|
|
return tok->type;
|
|
}
|
|
|
|
tok->type = TK_STRING;
|
|
tok->base = 0;
|
|
tok->backp = p;
|
|
|
|
PFETCH(c);
|
|
if (IS_MC_ESC_CODE(c, enc, syn)) {
|
|
if (PEND) return ONIGERR_END_PATTERN_AT_ESCAPE;
|
|
|
|
tok->backp = p;
|
|
PFETCH(c);
|
|
|
|
tok->u.c = c;
|
|
tok->escaped = 1;
|
|
switch (c) {
|
|
case '*':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_ASTERISK_ZERO_INF)) break;
|
|
tok->type = TK_OP_REPEAT;
|
|
tok->u.repeat.lower = 0;
|
|
tok->u.repeat.upper = REPEAT_INFINITE;
|
|
goto greedy_check;
|
|
break;
|
|
|
|
case '+':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_PLUS_ONE_INF)) break;
|
|
tok->type = TK_OP_REPEAT;
|
|
tok->u.repeat.lower = 1;
|
|
tok->u.repeat.upper = REPEAT_INFINITE;
|
|
goto greedy_check;
|
|
break;
|
|
|
|
case '?':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_QMARK_ZERO_ONE)) break;
|
|
tok->type = TK_OP_REPEAT;
|
|
tok->u.repeat.lower = 0;
|
|
tok->u.repeat.upper = 1;
|
|
greedy_check:
|
|
if (!PEND && PPEEK_IS('?') &&
|
|
IS_SYNTAX_OP(syn, ONIG_SYN_OP_QMARK_NON_GREEDY)) {
|
|
PFETCH(c);
|
|
tok->u.repeat.greedy = 0;
|
|
tok->u.repeat.possessive = 0;
|
|
}
|
|
else {
|
|
possessive_check:
|
|
if (!PEND && PPEEK_IS('+') &&
|
|
((IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_PLUS_POSSESSIVE_REPEAT) &&
|
|
tok->type != TK_INTERVAL) ||
|
|
(IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_PLUS_POSSESSIVE_INTERVAL) &&
|
|
tok->type == TK_INTERVAL))) {
|
|
PFETCH(c);
|
|
tok->u.repeat.greedy = 1;
|
|
tok->u.repeat.possessive = 1;
|
|
}
|
|
else {
|
|
tok->u.repeat.greedy = 1;
|
|
tok->u.repeat.possessive = 0;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case '{':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_BRACE_INTERVAL)) break;
|
|
r = fetch_range_qualifier(&p, end, tok, env);
|
|
if (r < 0) return r; /* error */
|
|
if (r == 0) goto greedy_check;
|
|
else if (r == 2) { /* {n} */
|
|
if (IS_SYNTAX_BV(syn, ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY))
|
|
goto possessive_check;
|
|
|
|
goto greedy_check;
|
|
}
|
|
/* r == 1 : normal char */
|
|
break;
|
|
|
|
case '|':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_VBAR_ALT)) break;
|
|
tok->type = TK_ALT;
|
|
break;
|
|
|
|
case '(':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_LPAREN_SUBEXP)) break;
|
|
tok->type = TK_SUBEXP_OPEN;
|
|
break;
|
|
|
|
case ')':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_LPAREN_SUBEXP)) break;
|
|
tok->type = TK_SUBEXP_CLOSE;
|
|
break;
|
|
|
|
case 'w':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_W_WORD)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_WORD;
|
|
break;
|
|
|
|
case 'W':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_W_WORD)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_NOT_WORD;
|
|
break;
|
|
|
|
case 'b':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_B_WORD_BOUND)) break;
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.anchor = ANCHOR_WORD_BOUND;
|
|
break;
|
|
|
|
case 'B':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_B_WORD_BOUND)) break;
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.anchor = ANCHOR_NOT_WORD_BOUND;
|
|
break;
|
|
|
|
#ifdef USE_WORD_BEGIN_END
|
|
case '<':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END)) break;
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.anchor = ANCHOR_WORD_BEGIN;
|
|
break;
|
|
|
|
case '>':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END)) break;
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.anchor = ANCHOR_WORD_END;
|
|
break;
|
|
#endif
|
|
|
|
case 's':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_S_WHITE_SPACE)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_WHITE_SPACE;
|
|
break;
|
|
|
|
case 'S':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_S_WHITE_SPACE)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_NOT_WHITE_SPACE;
|
|
break;
|
|
|
|
case 'd':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_D_DIGIT)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_DIGIT;
|
|
break;
|
|
|
|
case 'D':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_D_DIGIT)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_NOT_DIGIT;
|
|
break;
|
|
|
|
case 'h':
|
|
if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_H_XDIGIT)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_XDIGIT;
|
|
break;
|
|
|
|
case 'H':
|
|
if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_H_XDIGIT)) break;
|
|
tok->type = TK_CHAR_TYPE;
|
|
tok->u.subtype = CTYPE_NOT_XDIGIT;
|
|
break;
|
|
|
|
case 'A':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR)) break;
|
|
begin_buf:
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.subtype = ANCHOR_BEGIN_BUF;
|
|
break;
|
|
|
|
case 'Z':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR)) break;
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.subtype = ANCHOR_SEMI_END_BUF;
|
|
break;
|
|
|
|
case 'z':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR)) break;
|
|
end_buf:
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.subtype = ANCHOR_END_BUF;
|
|
break;
|
|
|
|
case 'G':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_CAPITAL_G_BEGIN_ANCHOR)) break;
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.subtype = ANCHOR_BEGIN_POSITION;
|
|
break;
|
|
|
|
case '`':
|
|
if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR)) break;
|
|
goto begin_buf;
|
|
break;
|
|
|
|
case '\'':
|
|
if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR)) break;
|
|
goto end_buf;
|
|
break;
|
|
|
|
case 'x':
|
|
if (PEND) break;
|
|
|
|
prev = p;
|
|
if (PPEEK_IS('{') && IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_X_BRACE_HEX8)) {
|
|
PINC;
|
|
num = scan_unsigned_hexadecimal_number(&p, end, 8, enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE;
|
|
if (!PEND) {
|
|
if (ONIGENC_IS_CODE_XDIGIT(enc, PPEEK))
|
|
return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE;
|
|
}
|
|
|
|
if ((p > prev + enc_len(enc, prev)) && !PEND && PPEEK_IS('}')) {
|
|
PINC;
|
|
tok->type = TK_CODE_POINT;
|
|
tok->u.code = (OnigCodePoint )num;
|
|
}
|
|
else {
|
|
/* can't read nothing or invalid format */
|
|
p = prev;
|
|
}
|
|
}
|
|
else if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_X_HEX2)) {
|
|
num = scan_unsigned_hexadecimal_number(&p, end, 2, enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
|
|
if (p == prev) { /* can't read nothing. */
|
|
num = 0; /* but, it's not error */
|
|
}
|
|
tok->type = TK_RAW_BYTE;
|
|
tok->base = 16;
|
|
tok->u.c = num;
|
|
}
|
|
break;
|
|
|
|
case 'u':
|
|
if (PEND) break;
|
|
|
|
prev = p;
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_U_HEX4)) {
|
|
num = scan_unsigned_hexadecimal_number(&p, end, 4, enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
|
|
if (p == prev) { /* can't read nothing. */
|
|
num = 0; /* but, it's not error */
|
|
}
|
|
tok->type = TK_CODE_POINT;
|
|
tok->base = 16;
|
|
tok->u.code = (OnigCodePoint )num;
|
|
}
|
|
break;
|
|
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
PUNFETCH;
|
|
prev = p;
|
|
num = onig_scan_unsigned_number(&p, end, enc);
|
|
if (num < 0 || num > ONIG_MAX_BACKREF_NUM) {
|
|
goto skip_backref;
|
|
}
|
|
|
|
if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_DECIMAL_BACKREF) &&
|
|
(num <= env->num_mem || num <= 9)) { /* This spec. from GNU regex */
|
|
if (IS_SYNTAX_BV(syn, ONIG_SYN_STRICT_CHECK_BACKREF)) {
|
|
if (num > env->num_mem || IS_NULL(SCANENV_MEM_NODES(env)[num]))
|
|
return ONIGERR_INVALID_BACKREF;
|
|
}
|
|
|
|
tok->type = TK_BACKREF;
|
|
tok->u.backref.num = 1;
|
|
tok->u.backref.ref1 = num;
|
|
tok->u.backref.by_name = 0;
|
|
#ifdef USE_BACKREF_AT_LEVEL
|
|
tok->u.backref.exist_level = 0;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
skip_backref:
|
|
if (c == '8' || c == '9') {
|
|
/* normal char */
|
|
p = prev; PINC;
|
|
break;
|
|
}
|
|
|
|
p = prev;
|
|
/* fall through */
|
|
case '0':
|
|
if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_OCTAL3)) {
|
|
prev = p;
|
|
num = scan_unsigned_octal_number(&p, end, (c == '0' ? 2:3), enc);
|
|
if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
|
|
if (p == prev) { /* can't read nothing. */
|
|
num = 0; /* but, it's not error */
|
|
}
|
|
tok->type = TK_RAW_BYTE;
|
|
tok->base = 8;
|
|
tok->u.c = num;
|
|
}
|
|
else if (c != '0') {
|
|
PINC;
|
|
}
|
|
break;
|
|
|
|
#ifdef USE_NAMED_GROUP
|
|
case 'k':
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_K_NAMED_BACKREF)) {
|
|
PFETCH(c);
|
|
if (c == '<') {
|
|
UChar* name_end;
|
|
int* backs;
|
|
|
|
prev = p;
|
|
|
|
#ifdef USE_BACKREF_AT_LEVEL
|
|
name_end = NULL_UCHARP; /* no need. escape gcc warning. */
|
|
r = fetch_name_with_level(&p, end, &name_end, env, &tok->u.backref.level);
|
|
if (r == 1) tok->u.backref.exist_level = 1;
|
|
else tok->u.backref.exist_level = 0;
|
|
#else
|
|
r = fetch_name(&p, end, &name_end, env, 1);
|
|
#endif
|
|
if (r < 0) return r;
|
|
|
|
num = onig_name_to_group_numbers(env->reg, prev, name_end, &backs);
|
|
if (num <= 0) {
|
|
onig_scan_env_set_error_string(env,
|
|
ONIGERR_UNDEFINED_NAME_REFERENCE, prev, name_end);
|
|
return ONIGERR_UNDEFINED_NAME_REFERENCE;
|
|
}
|
|
if (IS_SYNTAX_BV(syn, ONIG_SYN_STRICT_CHECK_BACKREF)) {
|
|
int i;
|
|
for (i = 0; i < num; i++) {
|
|
if (backs[i] > env->num_mem ||
|
|
IS_NULL(SCANENV_MEM_NODES(env)[backs[i]]))
|
|
return ONIGERR_INVALID_BACKREF;
|
|
}
|
|
}
|
|
|
|
tok->type = TK_BACKREF;
|
|
tok->u.backref.by_name = 1;
|
|
if (num == 1) {
|
|
tok->u.backref.num = 1;
|
|
tok->u.backref.ref1 = backs[0];
|
|
}
|
|
else {
|
|
tok->u.backref.num = num;
|
|
tok->u.backref.refs = backs;
|
|
}
|
|
}
|
|
else
|
|
PUNFETCH;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef USE_SUBEXP_CALL
|
|
case 'g':
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_G_SUBEXP_CALL)) {
|
|
PFETCH(c);
|
|
if (c == '<') {
|
|
UChar* name_end;
|
|
|
|
prev = p;
|
|
r = fetch_name(&p, end, &name_end, env, 1);
|
|
if (r < 0) return r;
|
|
|
|
tok->type = TK_CALL;
|
|
tok->u.call.name = prev;
|
|
tok->u.call.name_end = name_end;
|
|
}
|
|
else
|
|
PUNFETCH;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
case 'Q':
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_CAPITAL_Q_QUOTE)) {
|
|
tok->type = TK_QUOTE_OPEN;
|
|
}
|
|
break;
|
|
|
|
case 'p':
|
|
case 'P':
|
|
if (PPEEK_IS('{') &&
|
|
IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY)) {
|
|
PINC;
|
|
tok->type = TK_CHAR_PROPERTY;
|
|
tok->u.prop.not = (c == 'P' ? 1 : 0);
|
|
|
|
if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT)) {
|
|
PFETCH(c);
|
|
if (c == '^') {
|
|
tok->u.prop.not = (tok->u.prop.not == 0 ? 1 : 0);
|
|
}
|
|
else
|
|
PUNFETCH;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
PUNFETCH;
|
|
num = fetch_escaped_value(&p, end, env);
|
|
if (num < 0) return num;
|
|
/* set_raw: */
|
|
if (tok->u.c != num) {
|
|
tok->type = TK_CODE_POINT;
|
|
tok->u.code = (OnigCodePoint )num;
|
|
}
|
|
else { /* string */
|
|
p = tok->backp + enc_len(enc, tok->backp);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
tok->u.c = c;
|
|
tok->escaped = 0;
|
|
|
|
#ifdef USE_VARIABLE_META_CHARS
|
|
if ((c != ONIG_INEFFECTIVE_META_CHAR) &&
|
|
IS_SYNTAX_OP(syn, ONIG_SYN_OP_VARIABLE_META_CHARACTERS)) {
|
|
if (c == MC_ANYCHAR(enc))
|
|
goto any_char;
|
|
else if (c == MC_ANYTIME(enc))
|
|
goto anytime;
|
|
else if (c == MC_ZERO_OR_ONE_TIME(enc))
|
|
goto zero_or_one_time;
|
|
else if (c == MC_ONE_OR_MORE_TIME(enc))
|
|
goto one_or_more_time;
|
|
else if (c == MC_ANYCHAR_ANYTIME(enc)) {
|
|
tok->type = TK_ANYCHAR_ANYTIME;
|
|
goto out;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
switch (c) {
|
|
case '.':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_DOT_ANYCHAR)) break;
|
|
#ifdef USE_VARIABLE_META_CHARS
|
|
any_char:
|
|
#endif
|
|
tok->type = TK_ANYCHAR;
|
|
break;
|
|
|
|
case '*':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ASTERISK_ZERO_INF)) break;
|
|
#ifdef USE_VARIABLE_META_CHARS
|
|
anytime:
|
|
#endif
|
|
tok->type = TK_OP_REPEAT;
|
|
tok->u.repeat.lower = 0;
|
|
tok->u.repeat.upper = REPEAT_INFINITE;
|
|
goto greedy_check;
|
|
break;
|
|
|
|
case '+':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_PLUS_ONE_INF)) break;
|
|
#ifdef USE_VARIABLE_META_CHARS
|
|
one_or_more_time:
|
|
#endif
|
|
tok->type = TK_OP_REPEAT;
|
|
tok->u.repeat.lower = 1;
|
|
tok->u.repeat.upper = REPEAT_INFINITE;
|
|
goto greedy_check;
|
|
break;
|
|
|
|
case '?':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_QMARK_ZERO_ONE)) break;
|
|
#ifdef USE_VARIABLE_META_CHARS
|
|
zero_or_one_time:
|
|
#endif
|
|
tok->type = TK_OP_REPEAT;
|
|
tok->u.repeat.lower = 0;
|
|
tok->u.repeat.upper = 1;
|
|
goto greedy_check;
|
|
break;
|
|
|
|
case '{':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_BRACE_INTERVAL)) break;
|
|
r = fetch_range_qualifier(&p, end, tok, env);
|
|
if (r < 0) return r; /* error */
|
|
if (r == 0) goto greedy_check;
|
|
else if (r == 2) { /* {n} */
|
|
if (IS_SYNTAX_BV(syn, ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY))
|
|
goto possessive_check;
|
|
|
|
goto greedy_check;
|
|
}
|
|
/* r == 1 : normal char */
|
|
break;
|
|
|
|
case '|':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_VBAR_ALT)) break;
|
|
tok->type = TK_ALT;
|
|
break;
|
|
|
|
case '(':
|
|
if (PPEEK_IS('?') &&
|
|
IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_QMARK_GROUP_EFFECT)) {
|
|
PINC;
|
|
if (PPEEK_IS('#')) {
|
|
PFETCH(c);
|
|
while (1) {
|
|
if (PEND) return ONIGERR_END_PATTERN_IN_GROUP;
|
|
PFETCH(c);
|
|
if (c == MC_ESC(enc)) {
|
|
if (!PEND) PFETCH(c);
|
|
}
|
|
else {
|
|
if (c == ')') break;
|
|
}
|
|
}
|
|
goto start;
|
|
}
|
|
PUNFETCH;
|
|
}
|
|
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_LPAREN_SUBEXP)) break;
|
|
tok->type = TK_SUBEXP_OPEN;
|
|
break;
|
|
|
|
case ')':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_LPAREN_SUBEXP)) break;
|
|
tok->type = TK_SUBEXP_CLOSE;
|
|
break;
|
|
|
|
case '^':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_LINE_ANCHOR)) break;
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.subtype = (IS_SINGLELINE(env->option)
|
|
? ANCHOR_BEGIN_BUF : ANCHOR_BEGIN_LINE);
|
|
break;
|
|
|
|
case '$':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_LINE_ANCHOR)) break;
|
|
tok->type = TK_ANCHOR;
|
|
tok->u.subtype = (IS_SINGLELINE(env->option)
|
|
? ANCHOR_END_BUF : ANCHOR_END_LINE);
|
|
break;
|
|
|
|
case '[':
|
|
if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_BRACKET_CC)) break;
|
|
tok->type = TK_CC_OPEN;
|
|
break;
|
|
|
|
case ']':
|
|
if (*src > env->pattern) /* /].../ is allowed. */
|
|
CCEND_ESC_WARN(env, (UChar* )"]");
|
|
break;
|
|
|
|
case '#':
|
|
if (IS_EXTEND(env->option)) {
|
|
while (!PEND) {
|
|
PFETCH(c);
|
|
if (ONIGENC_IS_CODE_NEWLINE(enc, c))
|
|
break;
|
|
}
|
|
goto start;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case ' ': case '\t': case '\n': case '\r': case '\f':
|
|
if (IS_EXTEND(env->option))
|
|
goto start;
|
|
break;
|
|
|
|
default:
|
|
/* string */
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifdef USE_VARIABLE_META_CHARS
|
|
out:
|
|
#endif
|
|
*src = p;
|
|
return tok->type;
|
|
}
|
|
|
|
static int
|
|
add_ctype_to_cc_by_range(CClassNode* cc, int ctype, int not, OnigEncoding enc,
|
|
const OnigCodePoint sbr[], const OnigCodePoint mbr[])
|
|
{
|
|
int i, r;
|
|
OnigCodePoint j;
|
|
|
|
int nsb = ONIGENC_CODE_RANGE_NUM(sbr);
|
|
int nmb = ONIGENC_CODE_RANGE_NUM(mbr);
|
|
|
|
if (not == 0) {
|
|
for (i = 0; i < nsb; i++) {
|
|
for (j = ONIGENC_CODE_RANGE_FROM(sbr, i);
|
|
j <= ONIGENC_CODE_RANGE_TO(sbr, i); j++) {
|
|
BITSET_SET_BIT(cc->bs, j);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < nmb; i++) {
|
|
r = add_code_range_to_buf(&(cc->mbuf),
|
|
ONIGENC_CODE_RANGE_FROM(mbr, i),
|
|
ONIGENC_CODE_RANGE_TO(mbr, i));
|
|
if (r != 0) return r;
|
|
}
|
|
}
|
|
else {
|
|
OnigCodePoint prev = 0;
|
|
|
|
if (ONIGENC_MBC_MINLEN(enc) == 1) {
|
|
for (i = 0; i < nsb; i++) {
|
|
for (j = prev;
|
|
j < ONIGENC_CODE_RANGE_FROM(sbr, i); j++) {
|
|
BITSET_SET_BIT(cc->bs, j);
|
|
}
|
|
prev = ONIGENC_CODE_RANGE_TO(sbr, i) + 1;
|
|
}
|
|
if (prev < 0x7f) {
|
|
for (j = prev; j < 0x7f; j++) {
|
|
BITSET_SET_BIT(cc->bs, j);
|
|
}
|
|
}
|
|
|
|
prev = 0x80;
|
|
}
|
|
|
|
for (i = 0; i < nmb; i++) {
|
|
if (prev < ONIGENC_CODE_RANGE_FROM(mbr, i)) {
|
|
r = add_code_range_to_buf(&(cc->mbuf), prev,
|
|
ONIGENC_CODE_RANGE_FROM(mbr, i) - 1);
|
|
if (r != 0) return r;
|
|
}
|
|
prev = ONIGENC_CODE_RANGE_TO(mbr, i) + 1;
|
|
}
|
|
if (prev < 0x7fffffff) {
|
|
r = add_code_range_to_buf(&(cc->mbuf), prev, 0x7fffffff);
|
|
if (r != 0) return r;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
add_ctype_to_cc(CClassNode* cc, int ctype, int not, ScanEnv* env)
|
|
{
|
|
int c, r;
|
|
const OnigCodePoint *sbr, *mbr;
|
|
OnigEncoding enc = env->enc;
|
|
|
|
r = ONIGENC_GET_CTYPE_CODE_RANGE(enc, ctype, &sbr, &mbr);
|
|
if (r == 0) {
|
|
return add_ctype_to_cc_by_range(cc, ctype, not, env->enc, sbr, mbr);
|
|
}
|
|
else if (r != ONIG_NO_SUPPORT_CONFIG) {
|
|
return r;
|
|
}
|
|
|
|
r = 0;
|
|
switch (ctype) {
|
|
case ONIGENC_CTYPE_ALPHA:
|
|
case ONIGENC_CTYPE_BLANK:
|
|
case ONIGENC_CTYPE_CNTRL:
|
|
case ONIGENC_CTYPE_DIGIT:
|
|
case ONIGENC_CTYPE_LOWER:
|
|
case ONIGENC_CTYPE_PUNCT:
|
|
case ONIGENC_CTYPE_SPACE:
|
|
case ONIGENC_CTYPE_UPPER:
|
|
case ONIGENC_CTYPE_XDIGIT:
|
|
case ONIGENC_CTYPE_ASCII:
|
|
case ONIGENC_CTYPE_ALNUM:
|
|
if (not != 0) {
|
|
for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
|
|
if (! ONIGENC_IS_CODE_CTYPE(enc, (OnigCodePoint )c, ctype))
|
|
BITSET_SET_BIT(cc->bs, c);
|
|
}
|
|
ADD_ALL_MULTI_BYTE_RANGE(enc, cc->mbuf);
|
|
}
|
|
else {
|
|
for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
|
|
if (ONIGENC_IS_CODE_CTYPE(enc, (OnigCodePoint )c, ctype))
|
|
BITSET_SET_BIT(cc->bs, c);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ONIGENC_CTYPE_GRAPH:
|
|
case ONIGENC_CTYPE_PRINT:
|
|
if (not != 0) {
|
|
for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
|
|
if (! ONIGENC_IS_CODE_CTYPE(enc, (OnigCodePoint )c, ctype))
|
|
BITSET_SET_BIT(cc->bs, c);
|
|
}
|
|
}
|
|
else {
|
|
for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
|
|
if (ONIGENC_IS_CODE_CTYPE(enc, (OnigCodePoint )c, ctype))
|
|
BITSET_SET_BIT(cc->bs, c);
|
|
}
|
|
ADD_ALL_MULTI_BYTE_RANGE(enc, cc->mbuf);
|
|
}
|
|
break;
|
|
|
|
case ONIGENC_CTYPE_WORD:
|
|
if (not == 0) {
|
|
for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
|
|
if (ONIGENC_IS_CODE_SB_WORD(enc, c)) BITSET_SET_BIT(cc->bs, c);
|
|
}
|
|
ADD_ALL_MULTI_BYTE_RANGE(enc, cc->mbuf);
|
|
}
|
|
else {
|
|
for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
|
|
if ((ONIGENC_CODE_TO_MBCLEN(enc, c) > 0) /* 0: invalid code point */
|
|
&& ! ONIGENC_IS_CODE_WORD(enc, c))
|
|
BITSET_SET_BIT(cc->bs, c);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return ONIGERR_PARSER_BUG;
|
|
break;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static int
|
|
parse_ctype_to_enc_ctype(int pctype, int* not)
|
|
{
|
|
int ctype;
|
|
|
|
switch (pctype) {
|
|
case CTYPE_WORD:
|
|
ctype = ONIGENC_CTYPE_WORD;
|
|
*not = 0;
|
|
break;
|
|
case CTYPE_NOT_WORD:
|
|
ctype = ONIGENC_CTYPE_WORD;
|
|
*not = 1;
|
|
break;
|
|
case CTYPE_WHITE_SPACE:
|
|
ctype = ONIGENC_CTYPE_SPACE;
|
|
*not = 0;
|
|
break;
|
|
case CTYPE_NOT_WHITE_SPACE:
|
|
ctype = ONIGENC_CTYPE_SPACE;
|
|
*not = 1;
|
|
break;
|
|
case CTYPE_DIGIT:
|
|
ctype = ONIGENC_CTYPE_DIGIT;
|
|
*not = 0;
|
|
break;
|
|
case CTYPE_NOT_DIGIT:
|
|
ctype = ONIGENC_CTYPE_DIGIT;
|
|
*not = 1;
|
|
break;
|
|
case CTYPE_XDIGIT:
|
|
ctype = ONIGENC_CTYPE_XDIGIT;
|
|
*not = 0;
|
|
break;
|
|
case CTYPE_NOT_XDIGIT:
|
|
ctype = ONIGENC_CTYPE_XDIGIT;
|
|
*not = 1;
|
|
break;
|
|
default:
|
|
return ONIGERR_PARSER_BUG;
|
|
break;
|
|
}
|
|
return ctype;
|
|
}
|
|
|
|
typedef struct {
|
|
UChar *name;
|
|
int ctype;
|
|
short int len;
|
|
} PosixBracketEntryType;
|
|
|
|
static int
|
|
parse_posix_bracket(CClassNode* cc, UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
#define POSIX_BRACKET_CHECK_LIMIT_LENGTH 20
|
|
#define POSIX_BRACKET_NAME_MAX_LEN 6
|
|
|
|
static PosixBracketEntryType PBS[] = {
|
|
{ (UChar* )"alnum", ONIGENC_CTYPE_ALNUM, 5 },
|
|
{ (UChar* )"alpha", ONIGENC_CTYPE_ALPHA, 5 },
|
|
{ (UChar* )"blank", ONIGENC_CTYPE_BLANK, 5 },
|
|
{ (UChar* )"cntrl", ONIGENC_CTYPE_CNTRL, 5 },
|
|
{ (UChar* )"digit", ONIGENC_CTYPE_DIGIT, 5 },
|
|
{ (UChar* )"graph", ONIGENC_CTYPE_GRAPH, 5 },
|
|
{ (UChar* )"lower", ONIGENC_CTYPE_LOWER, 5 },
|
|
{ (UChar* )"print", ONIGENC_CTYPE_PRINT, 5 },
|
|
{ (UChar* )"punct", ONIGENC_CTYPE_PUNCT, 5 },
|
|
{ (UChar* )"space", ONIGENC_CTYPE_SPACE, 5 },
|
|
{ (UChar* )"upper", ONIGENC_CTYPE_UPPER, 5 },
|
|
{ (UChar* )"xdigit", ONIGENC_CTYPE_XDIGIT, 6 },
|
|
{ (UChar* )"ascii", ONIGENC_CTYPE_ASCII, 5 },
|
|
{ (UChar* )NULL, -1, 0 }
|
|
};
|
|
|
|
PosixBracketEntryType *pb;
|
|
int not, i, r;
|
|
OnigCodePoint c;
|
|
OnigEncoding enc = env->enc;
|
|
UChar *p = *src;
|
|
PFETCH_READY;
|
|
|
|
if (PPEEK_IS('^')) {
|
|
PINC;
|
|
not = 1;
|
|
}
|
|
else
|
|
not = 0;
|
|
|
|
if (onigenc_strlen(enc, p, end) < POSIX_BRACKET_NAME_MAX_LEN + 2)
|
|
goto not_posix_bracket;
|
|
|
|
for (pb = PBS; IS_NOT_NULL(pb->name); pb++) {
|
|
if (onigenc_with_ascii_strncmp(enc, p, end, pb->name, pb->len) == 0) {
|
|
p = (UChar* )onigenc_step(enc, p, end, pb->len);
|
|
if (onigenc_with_ascii_strncmp(enc, p, end, (UChar* )":]", 2) != 0)
|
|
return ONIGERR_INVALID_POSIX_BRACKET_TYPE;
|
|
|
|
r = add_ctype_to_cc(cc, pb->ctype, not, env);
|
|
if (r != 0) return r;
|
|
|
|
PINC; PINC;
|
|
*src = p;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
not_posix_bracket:
|
|
c = 0;
|
|
i = 0;
|
|
while (!PEND && ((c = PPEEK) != ':') && c != ']') {
|
|
PINC;
|
|
if (++i > POSIX_BRACKET_CHECK_LIMIT_LENGTH) break;
|
|
}
|
|
if (c == ':' && ! PEND) {
|
|
PINC;
|
|
if (! PEND) {
|
|
PFETCH(c);
|
|
if (c == ']')
|
|
return ONIGERR_INVALID_POSIX_BRACKET_TYPE;
|
|
}
|
|
}
|
|
|
|
return 1; /* 1: is not POSIX bracket, but no error. */
|
|
}
|
|
|
|
static int
|
|
property_name_to_ctype(UChar* p, UChar* end, OnigEncoding enc)
|
|
{
|
|
static PosixBracketEntryType PBS[] = {
|
|
{ (UChar* )"Alnum", ONIGENC_CTYPE_ALNUM, 5 },
|
|
{ (UChar* )"Alpha", ONIGENC_CTYPE_ALPHA, 5 },
|
|
{ (UChar* )"Blank", ONIGENC_CTYPE_BLANK, 5 },
|
|
{ (UChar* )"Cntrl", ONIGENC_CTYPE_CNTRL, 5 },
|
|
{ (UChar* )"Digit", ONIGENC_CTYPE_DIGIT, 5 },
|
|
{ (UChar* )"Graph", ONIGENC_CTYPE_GRAPH, 5 },
|
|
{ (UChar* )"Lower", ONIGENC_CTYPE_LOWER, 5 },
|
|
{ (UChar* )"Print", ONIGENC_CTYPE_PRINT, 5 },
|
|
{ (UChar* )"Punct", ONIGENC_CTYPE_PUNCT, 5 },
|
|
{ (UChar* )"Space", ONIGENC_CTYPE_SPACE, 5 },
|
|
{ (UChar* )"Upper", ONIGENC_CTYPE_UPPER, 5 },
|
|
{ (UChar* )"XDigit", ONIGENC_CTYPE_XDIGIT, 6 },
|
|
{ (UChar* )"ASCII", ONIGENC_CTYPE_ASCII, 5 },
|
|
{ (UChar* )NULL, -1, 0 }
|
|
};
|
|
|
|
PosixBracketEntryType *pb;
|
|
int len;
|
|
|
|
len = onigenc_strlen(enc, p, end);
|
|
for (pb = PBS; IS_NOT_NULL(pb->name); pb++) {
|
|
if (len == pb->len &&
|
|
onigenc_with_ascii_strncmp(enc, p, end, pb->name, pb->len) == 0)
|
|
return pb->ctype;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
fetch_char_property_to_ctype(UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
int ctype;
|
|
OnigCodePoint c;
|
|
OnigEncoding enc = env->enc;
|
|
UChar *prev, *start, *p = *src;
|
|
PFETCH_READY;
|
|
|
|
/* 'IsXXXX' => 'XXXX' */
|
|
if (!PEND &&
|
|
IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_CHAR_PROPERTY_PREFIX_IS)) {
|
|
c = PPEEK;
|
|
if (c == 'I') {
|
|
PINC;
|
|
if (! PEND) {
|
|
c = PPEEK;
|
|
if (c == 's')
|
|
PINC;
|
|
else
|
|
PUNFETCH;
|
|
}
|
|
}
|
|
}
|
|
|
|
start = prev = p;
|
|
|
|
while (!PEND) {
|
|
prev = p;
|
|
PFETCH(c);
|
|
if (c == '}') {
|
|
ctype = property_name_to_ctype(start, prev, enc);
|
|
if (ctype < 0) break;
|
|
|
|
*src = p;
|
|
return ctype;
|
|
}
|
|
else if (c == '(' || c == ')' || c == '{' || c == '|')
|
|
break;
|
|
}
|
|
|
|
onig_scan_env_set_error_string(env, ONIGERR_INVALID_CHAR_PROPERTY_NAME,
|
|
*src, prev);
|
|
return ONIGERR_INVALID_CHAR_PROPERTY_NAME;
|
|
}
|
|
|
|
static int
|
|
parse_char_property(Node** np, OnigToken* tok, UChar** src, UChar* end,
|
|
ScanEnv* env)
|
|
{
|
|
int r, ctype;
|
|
CClassNode* cc;
|
|
|
|
ctype = fetch_char_property_to_ctype(src, end, env);
|
|
if (ctype < 0) return ctype;
|
|
|
|
*np = node_new_cclass();
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
cc = &(NCCLASS(*np));
|
|
r = add_ctype_to_cc(cc, ctype, 0, env);
|
|
if (r != 0) return r;
|
|
if (tok->u.prop.not != 0) CCLASS_SET_NOT(cc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
enum CCSTATE {
|
|
CCS_VALUE,
|
|
CCS_RANGE,
|
|
CCS_COMPLETE,
|
|
CCS_START
|
|
};
|
|
|
|
enum CCVALTYPE {
|
|
CCV_SB,
|
|
CCV_CODE_POINT,
|
|
CCV_CLASS
|
|
};
|
|
|
|
static int
|
|
next_state_class(CClassNode* cc, OnigCodePoint* vs, enum CCVALTYPE* type,
|
|
enum CCSTATE* state, ScanEnv* env)
|
|
{
|
|
int r;
|
|
|
|
if (*state == CCS_RANGE)
|
|
return ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE;
|
|
|
|
if (*state == CCS_VALUE && *type != CCV_CLASS) {
|
|
if (*type == CCV_SB)
|
|
BITSET_SET_BIT(cc->bs, (int )(*vs));
|
|
else if (*type == CCV_CODE_POINT) {
|
|
r = add_code_range(&(cc->mbuf), env, *vs, *vs);
|
|
if (r < 0) return r;
|
|
}
|
|
}
|
|
|
|
*state = CCS_VALUE;
|
|
*type = CCV_CLASS;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
next_state_val(CClassNode* cc, OnigCodePoint *vs, OnigCodePoint v,
|
|
int* vs_israw, int v_israw,
|
|
enum CCVALTYPE intype, enum CCVALTYPE* type,
|
|
enum CCSTATE* state, ScanEnv* env)
|
|
{
|
|
int r;
|
|
|
|
switch (*state) {
|
|
case CCS_VALUE:
|
|
if (*type == CCV_SB)
|
|
BITSET_SET_BIT(cc->bs, (int )(*vs));
|
|
else if (*type == CCV_CODE_POINT) {
|
|
r = add_code_range(&(cc->mbuf), env, *vs, *vs);
|
|
if (r < 0) return r;
|
|
}
|
|
break;
|
|
|
|
case CCS_RANGE:
|
|
if (intype == *type) {
|
|
if (intype == CCV_SB) {
|
|
if (*vs > 0xff || v > 0xff)
|
|
return ONIGERR_INVALID_WIDE_CHAR_VALUE;
|
|
|
|
if (*vs > v) {
|
|
if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC))
|
|
goto ccs_range_end;
|
|
else
|
|
return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS;
|
|
}
|
|
bitset_set_range(cc->bs, (int )*vs, (int )v);
|
|
}
|
|
else {
|
|
r = add_code_range(&(cc->mbuf), env, *vs, v);
|
|
if (r < 0) return r;
|
|
}
|
|
}
|
|
else {
|
|
#if 0
|
|
if (intype == CCV_CODE_POINT && *type == CCV_SB) {
|
|
#endif
|
|
if (*vs > v) {
|
|
if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC))
|
|
goto ccs_range_end;
|
|
else
|
|
return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS;
|
|
}
|
|
bitset_set_range(cc->bs, (int )*vs, (int )(v < 0xff ? v : 0xff));
|
|
r = add_code_range(&(cc->mbuf), env, (OnigCodePoint )*vs, v);
|
|
if (r < 0) return r;
|
|
#if 0
|
|
}
|
|
else
|
|
return ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE;
|
|
#endif
|
|
}
|
|
ccs_range_end:
|
|
*state = CCS_COMPLETE;
|
|
break;
|
|
|
|
case CCS_COMPLETE:
|
|
case CCS_START:
|
|
*state = CCS_VALUE;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
*vs_israw = v_israw;
|
|
*vs = v;
|
|
*type = intype;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
code_exist_check(OnigCodePoint c, UChar* from, UChar* end, int ignore_escaped,
|
|
OnigEncoding enc)
|
|
{
|
|
int in_esc;
|
|
OnigCodePoint code;
|
|
UChar* p = from;
|
|
PFETCH_READY;
|
|
|
|
in_esc = 0;
|
|
while (! PEND) {
|
|
if (ignore_escaped && in_esc) {
|
|
in_esc = 0;
|
|
}
|
|
else {
|
|
PFETCH(code);
|
|
if (code == c) return 1;
|
|
if (code == MC_ESC(enc)) in_esc = 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
parse_char_class(Node** np, OnigToken* tok, UChar** src, UChar* end,
|
|
ScanEnv* env)
|
|
{
|
|
int r, neg, len, fetched, and_start;
|
|
OnigCodePoint v, vs;
|
|
UChar *p;
|
|
Node* node;
|
|
CClassNode *cc, *prev_cc;
|
|
CClassNode work_cc;
|
|
|
|
enum CCSTATE state;
|
|
enum CCVALTYPE val_type, in_type;
|
|
int val_israw, in_israw;
|
|
|
|
prev_cc = (CClassNode* )NULL;
|
|
*np = NULL_NODE;
|
|
r = fetch_token_in_cc(tok, src, end, env);
|
|
if (r == TK_CHAR && tok->u.c == '^' && tok->escaped == 0) {
|
|
neg = 1;
|
|
r = fetch_token_in_cc(tok, src, end, env);
|
|
}
|
|
else {
|
|
neg = 0;
|
|
}
|
|
|
|
if (r < 0) return r;
|
|
if (r == TK_CC_CLOSE) {
|
|
if (! code_exist_check((OnigCodePoint )']',
|
|
*src, env->pattern_end, 1, env->enc))
|
|
return ONIGERR_EMPTY_CHAR_CLASS;
|
|
|
|
CC_ESC_WARN(env, (UChar* )"]");
|
|
r = tok->type = TK_CHAR; /* allow []...] */
|
|
}
|
|
|
|
*np = node = node_new_cclass();
|
|
CHECK_NULL_RETURN_VAL(node, ONIGERR_MEMORY);
|
|
cc = &(NCCLASS(node));
|
|
|
|
and_start = 0;
|
|
state = CCS_START;
|
|
p = *src;
|
|
while (r != TK_CC_CLOSE) {
|
|
fetched = 0;
|
|
switch (r) {
|
|
case TK_CHAR:
|
|
len = ONIGENC_CODE_TO_MBCLEN(env->enc, tok->u.c);
|
|
if (len > 1) {
|
|
in_type = CCV_CODE_POINT;
|
|
}
|
|
else {
|
|
sb_char:
|
|
in_type = CCV_SB;
|
|
}
|
|
v = (OnigCodePoint )tok->u.c;
|
|
in_israw = 0;
|
|
goto val_entry2;
|
|
break;
|
|
|
|
case TK_RAW_BYTE:
|
|
/* tok->base != 0 : octal or hexadec. */
|
|
if (! ONIGENC_IS_SINGLEBYTE(env->enc) && tok->base != 0) {
|
|
UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN];
|
|
UChar* bufe = buf + ONIGENC_CODE_TO_MBC_MAXLEN;
|
|
UChar* psave = p;
|
|
int i, base = tok->base;
|
|
|
|
buf[0] = tok->u.c;
|
|
for (i = 1; i < ONIGENC_MBC_MAXLEN(env->enc); i++) {
|
|
r = fetch_token_in_cc(tok, &p, end, env);
|
|
if (r < 0) goto err;
|
|
if (r != TK_RAW_BYTE || tok->base != base) {
|
|
fetched = 1;
|
|
break;
|
|
}
|
|
buf[i] = tok->u.c;
|
|
}
|
|
|
|
if (i < ONIGENC_MBC_MINLEN(env->enc)) {
|
|
r = ONIGERR_TOO_SHORT_MULTI_BYTE_STRING;
|
|
goto err;
|
|
}
|
|
|
|
len = enc_len(env->enc, buf);
|
|
if (i < len) {
|
|
r = ONIGERR_TOO_SHORT_MULTI_BYTE_STRING;
|
|
goto err;
|
|
}
|
|
else if (i > len) { /* fetch back */
|
|
p = psave;
|
|
for (i = 1; i < len; i++) {
|
|
r = fetch_token_in_cc(tok, &p, end, env);
|
|
}
|
|
fetched = 0;
|
|
}
|
|
|
|
if (i == 1) {
|
|
v = (OnigCodePoint )buf[0];
|
|
goto raw_single;
|
|
}
|
|
else {
|
|
v = ONIGENC_MBC_TO_CODE(env->enc, buf, bufe);
|
|
in_type = CCV_CODE_POINT;
|
|
}
|
|
}
|
|
else {
|
|
v = (OnigCodePoint )tok->u.c;
|
|
raw_single:
|
|
in_type = CCV_SB;
|
|
}
|
|
in_israw = 1;
|
|
goto val_entry2;
|
|
break;
|
|
|
|
case TK_CODE_POINT:
|
|
v = tok->u.code;
|
|
in_israw = 1;
|
|
val_entry:
|
|
len = ONIGENC_CODE_TO_MBCLEN(env->enc, v);
|
|
if (len < 0) {
|
|
r = len;
|
|
goto err;
|
|
}
|
|
in_type = (len == 1 ? CCV_SB : CCV_CODE_POINT);
|
|
val_entry2:
|
|
r = next_state_val(cc, &vs, v, &val_israw, in_israw, in_type, &val_type,
|
|
&state, env);
|
|
if (r != 0) goto err;
|
|
break;
|
|
|
|
case TK_POSIX_BRACKET_OPEN:
|
|
r = parse_posix_bracket(cc, &p, end, env);
|
|
if (r < 0) goto err;
|
|
if (r == 1) { /* is not POSIX bracket */
|
|
CC_ESC_WARN(env, (UChar* )"[");
|
|
p = tok->backp;
|
|
v = (OnigCodePoint )tok->u.c;
|
|
in_israw = 0;
|
|
goto val_entry;
|
|
}
|
|
goto next_class;
|
|
break;
|
|
|
|
case TK_CHAR_TYPE:
|
|
{
|
|
int ctype, not;
|
|
ctype = parse_ctype_to_enc_ctype(tok->u.subtype, ¬);
|
|
r = add_ctype_to_cc(cc, ctype, not, env);
|
|
if (r != 0) return r;
|
|
}
|
|
|
|
next_class:
|
|
r = next_state_class(cc, &vs, &val_type, &state, env);
|
|
if (r != 0) goto err;
|
|
break;
|
|
|
|
case TK_CHAR_PROPERTY:
|
|
{
|
|
int ctype;
|
|
|
|
ctype = fetch_char_property_to_ctype(&p, end, env);
|
|
if (ctype < 0) return ctype;
|
|
r = add_ctype_to_cc(cc, ctype, tok->u.prop.not, env);
|
|
if (r != 0) return r;
|
|
goto next_class;
|
|
}
|
|
break;
|
|
|
|
case TK_CC_RANGE:
|
|
if (state == CCS_VALUE) {
|
|
r = fetch_token_in_cc(tok, &p, end, env);
|
|
if (r < 0) goto err;
|
|
fetched = 1;
|
|
if (r == TK_CC_CLOSE) { /* allow [x-] */
|
|
range_end_val:
|
|
v = (OnigCodePoint )'-';
|
|
in_israw = 0;
|
|
goto val_entry;
|
|
}
|
|
else if (r == TK_CC_AND) {
|
|
CC_ESC_WARN(env, (UChar* )"-");
|
|
goto range_end_val;
|
|
}
|
|
state = CCS_RANGE;
|
|
}
|
|
else if (state == CCS_START) {
|
|
/* [-xa] is allowed */
|
|
v = (OnigCodePoint )tok->u.c;
|
|
in_israw = 0;
|
|
|
|
r = fetch_token_in_cc(tok, &p, end, env);
|
|
if (r < 0) goto err;
|
|
fetched = 1;
|
|
/* [--x] or [a&&-x] is warned. */
|
|
if (r == TK_CC_RANGE || and_start != 0)
|
|
CC_ESC_WARN(env, (UChar* )"-");
|
|
|
|
goto val_entry;
|
|
}
|
|
else if (state == CCS_RANGE) {
|
|
CC_ESC_WARN(env, (UChar* )"-");
|
|
goto sb_char; /* [!--x] is allowed */
|
|
}
|
|
else { /* CCS_COMPLETE */
|
|
r = fetch_token_in_cc(tok, &p, end, env);
|
|
if (r < 0) goto err;
|
|
fetched = 1;
|
|
if (r == TK_CC_CLOSE) goto range_end_val; /* allow [a-b-] */
|
|
else if (r == TK_CC_AND) {
|
|
CC_ESC_WARN(env, (UChar* )"-");
|
|
goto range_end_val;
|
|
}
|
|
|
|
if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_DOUBLE_RANGE_OP_IN_CC)) {
|
|
CC_ESC_WARN(env, (UChar* )"-");
|
|
goto sb_char; /* [0-9-a] is allowed as [0-9\-a] */
|
|
}
|
|
r = ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS;
|
|
goto err;
|
|
}
|
|
break;
|
|
|
|
case TK_CC_CC_OPEN: /* [ */
|
|
{
|
|
Node *anode;
|
|
CClassNode* acc;
|
|
|
|
r = parse_char_class(&anode, tok, &p, end, env);
|
|
if (r != 0) goto cc_open_err;
|
|
acc = &(NCCLASS(anode));
|
|
r = or_cclass(cc, acc, env->enc);
|
|
|
|
onig_node_free(anode);
|
|
cc_open_err:
|
|
if (r != 0) goto err;
|
|
}
|
|
break;
|
|
|
|
case TK_CC_AND: /* && */
|
|
{
|
|
if (state == CCS_VALUE) {
|
|
r = next_state_val(cc, &vs, 0, &val_israw, 0, val_type,
|
|
&val_type, &state, env);
|
|
if (r != 0) goto err;
|
|
}
|
|
/* initialize local variables */
|
|
and_start = 1;
|
|
state = CCS_START;
|
|
|
|
if (IS_NOT_NULL(prev_cc)) {
|
|
r = and_cclass(prev_cc, cc, env->enc);
|
|
if (r != 0) goto err;
|
|
bbuf_free(cc->mbuf);
|
|
}
|
|
else {
|
|
prev_cc = cc;
|
|
cc = &work_cc;
|
|
}
|
|
initialize_cclass(cc);
|
|
}
|
|
break;
|
|
|
|
case TK_EOT:
|
|
r = ONIGERR_PREMATURE_END_OF_CHAR_CLASS;
|
|
goto err;
|
|
break;
|
|
default:
|
|
r = ONIGERR_PARSER_BUG;
|
|
goto err;
|
|
break;
|
|
}
|
|
|
|
if (fetched)
|
|
r = tok->type;
|
|
else {
|
|
r = fetch_token_in_cc(tok, &p, end, env);
|
|
if (r < 0) goto err;
|
|
}
|
|
}
|
|
|
|
if (state == CCS_VALUE) {
|
|
r = next_state_val(cc, &vs, 0, &val_israw, 0, val_type,
|
|
&val_type, &state, env);
|
|
if (r != 0) goto err;
|
|
}
|
|
|
|
if (IS_NOT_NULL(prev_cc)) {
|
|
r = and_cclass(prev_cc, cc, env->enc);
|
|
if (r != 0) goto err;
|
|
bbuf_free(cc->mbuf);
|
|
cc = prev_cc;
|
|
}
|
|
|
|
if (neg != 0)
|
|
CCLASS_SET_NOT(cc);
|
|
else
|
|
CCLASS_CLEAR_NOT(cc);
|
|
if (IS_CCLASS_NOT(cc) &&
|
|
IS_SYNTAX_BV(env->syntax, ONIG_SYN_NOT_NEWLINE_IN_NEGATIVE_CC)) {
|
|
int is_empty;
|
|
|
|
is_empty = (IS_NULL(cc->mbuf) ? 1 : 0);
|
|
if (is_empty != 0)
|
|
BITSET_IS_EMPTY(cc->bs, is_empty);
|
|
|
|
if (is_empty == 0) {
|
|
#define NEWLINE_CODE 0x0a
|
|
|
|
if (ONIGENC_IS_CODE_NEWLINE(env->enc, NEWLINE_CODE)) {
|
|
if (ONIGENC_CODE_TO_MBCLEN(env->enc, NEWLINE_CODE) == 1)
|
|
BITSET_SET_BIT(cc->bs, NEWLINE_CODE);
|
|
else
|
|
add_code_range(&(cc->mbuf), env, NEWLINE_CODE, NEWLINE_CODE);
|
|
}
|
|
}
|
|
}
|
|
*src = p;
|
|
return 0;
|
|
|
|
err:
|
|
if (cc != &(NCCLASS(*np)))
|
|
bbuf_free(cc->mbuf);
|
|
onig_node_free(*np);
|
|
return r;
|
|
}
|
|
|
|
static int parse_subexp(Node** top, OnigToken* tok, int term,
|
|
UChar** src, UChar* end, ScanEnv* env);
|
|
|
|
static int
|
|
parse_effect(Node** np, OnigToken* tok, int term, UChar** src, UChar* end,
|
|
ScanEnv* env)
|
|
{
|
|
int r, num;
|
|
int list_capture;
|
|
Node *target;
|
|
OnigOptionType option;
|
|
OnigEncoding enc = env->enc;
|
|
OnigCodePoint c;
|
|
UChar* p = *src;
|
|
PFETCH_READY;
|
|
|
|
*np = NULL;
|
|
if (PEND) return ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS;
|
|
|
|
option = env->option;
|
|
if (PPEEK_IS('?') &&
|
|
IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_QMARK_GROUP_EFFECT)) {
|
|
PINC;
|
|
if (PEND) return ONIGERR_END_PATTERN_IN_GROUP;
|
|
|
|
PFETCH(c);
|
|
switch (c) {
|
|
case ':': /* (?:...) grouping only */
|
|
group:
|
|
r = fetch_token(tok, &p, end, env);
|
|
if (r < 0) return r;
|
|
r = parse_subexp(np, tok, term, &p, end, env);
|
|
if (r < 0) return r;
|
|
*src = p;
|
|
return 1; /* group */
|
|
break;
|
|
|
|
case '=':
|
|
*np = onig_node_new_anchor(ANCHOR_PREC_READ);
|
|
break;
|
|
case '!': /* preceding read */
|
|
*np = onig_node_new_anchor(ANCHOR_PREC_READ_NOT);
|
|
break;
|
|
case '>': /* (?>...) stop backtrack */
|
|
*np = node_new_effect(EFFECT_STOP_BACKTRACK);
|
|
break;
|
|
|
|
case '<': /* look behind (?<=...), (?<!...) */
|
|
PFETCH(c);
|
|
if (c == '=')
|
|
*np = onig_node_new_anchor(ANCHOR_LOOK_BEHIND);
|
|
else if (c == '!')
|
|
*np = onig_node_new_anchor(ANCHOR_LOOK_BEHIND_NOT);
|
|
#ifdef USE_NAMED_GROUP
|
|
else if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_QMARK_LT_NAMED_GROUP)) {
|
|
UChar *name;
|
|
UChar *name_end;
|
|
|
|
PUNFETCH;
|
|
list_capture = 0;
|
|
|
|
named_group:
|
|
name = p;
|
|
r = fetch_name(&p, end, &name_end, env, 0);
|
|
if (r < 0) return r;
|
|
|
|
num = scan_env_add_mem_entry(env);
|
|
if (num < 0) return num;
|
|
if (list_capture != 0 && num >= BIT_STATUS_BITS_NUM)
|
|
return ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY;
|
|
|
|
r = name_add(env->reg, name, name_end, num, env);
|
|
if (r != 0) return r;
|
|
*np = node_new_effect_memory(env->option, 1);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
NEFFECT(*np).regnum = num;
|
|
if (list_capture != 0)
|
|
BIT_STATUS_ON_AT_SIMPLE(env->capture_history, num);
|
|
env->num_named++;
|
|
}
|
|
#endif
|
|
else
|
|
return ONIGERR_UNDEFINED_GROUP_OPTION;
|
|
break;
|
|
|
|
case '@':
|
|
if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_ATMARK_CAPTURE_HISTORY)) {
|
|
#ifdef USE_NAMED_GROUP
|
|
if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_QMARK_LT_NAMED_GROUP)) {
|
|
PFETCH(c);
|
|
if (c == '<') {
|
|
list_capture = 1;
|
|
goto named_group; /* (?@<name>...) */
|
|
}
|
|
PUNFETCH;
|
|
}
|
|
#endif
|
|
*np = node_new_effect_memory(env->option, 0);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
num = scan_env_add_mem_entry(env);
|
|
if (num < 0) {
|
|
onig_node_free(*np);
|
|
return num;
|
|
}
|
|
else if (num >= BIT_STATUS_BITS_NUM) {
|
|
onig_node_free(*np);
|
|
return ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY;
|
|
}
|
|
NEFFECT(*np).regnum = num;
|
|
BIT_STATUS_ON_AT_SIMPLE(env->capture_history, num);
|
|
}
|
|
else {
|
|
return ONIGERR_UNDEFINED_GROUP_OPTION;
|
|
}
|
|
break;
|
|
|
|
#ifdef USE_POSIXLINE_OPTION
|
|
case 'p':
|
|
#endif
|
|
case '-': case 'i': case 'm': case 's': case 'x':
|
|
{
|
|
int neg = 0;
|
|
|
|
while (1) {
|
|
switch (c) {
|
|
case ':':
|
|
case ')':
|
|
break;
|
|
|
|
case '-': neg = 1; break;
|
|
case 'x': ONOFF(option, ONIG_OPTION_EXTEND, neg); break;
|
|
case 'i': ONOFF(option, ONIG_OPTION_IGNORECASE, neg); break;
|
|
case 's':
|
|
if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_OPTION_PERL)) {
|
|
ONOFF(option, ONIG_OPTION_MULTILINE, neg);
|
|
}
|
|
else
|
|
return ONIGERR_UNDEFINED_GROUP_OPTION;
|
|
break;
|
|
|
|
case 'm':
|
|
if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_OPTION_PERL)) {
|
|
ONOFF(option, ONIG_OPTION_SINGLELINE, (neg == 0 ? 1 : 0));
|
|
}
|
|
else if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_OPTION_RUBY)) {
|
|
ONOFF(option, ONIG_OPTION_MULTILINE, neg);
|
|
}
|
|
else
|
|
return ONIGERR_UNDEFINED_GROUP_OPTION;
|
|
break;
|
|
#ifdef USE_POSIXLINE_OPTION
|
|
case 'p':
|
|
ONOFF(option, ONIG_OPTION_MULTILINE|ONIG_OPTION_SINGLELINE, neg);
|
|
break;
|
|
#endif
|
|
default:
|
|
return ONIGERR_UNDEFINED_GROUP_OPTION;
|
|
}
|
|
|
|
if (c == ')') {
|
|
*np = node_new_option(option);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
*src = p;
|
|
return 2; /* option only */
|
|
}
|
|
else if (c == ':') {
|
|
OnigOptionType prev = env->option;
|
|
|
|
env->option = option;
|
|
r = fetch_token(tok, &p, end, env);
|
|
if (r < 0) return r;
|
|
r = parse_subexp(&target, tok, term, &p, end, env);
|
|
env->option = prev;
|
|
if (r < 0) return r;
|
|
*np = node_new_option(option);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
NEFFECT(*np).target = target;
|
|
*src = p;
|
|
return 0;
|
|
}
|
|
|
|
if (PEND) return ONIGERR_END_PATTERN_IN_GROUP;
|
|
PFETCH(c);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return ONIGERR_UNDEFINED_GROUP_OPTION;
|
|
}
|
|
}
|
|
else {
|
|
if (ONIG_IS_OPTION_ON(env->option, ONIG_OPTION_DONT_CAPTURE_GROUP))
|
|
goto group;
|
|
|
|
*np = node_new_effect_memory(env->option, 0);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
num = scan_env_add_mem_entry(env);
|
|
if (num < 0) return num;
|
|
NEFFECT(*np).regnum = num;
|
|
}
|
|
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
r = fetch_token(tok, &p, end, env);
|
|
if (r < 0) return r;
|
|
r = parse_subexp(&target, tok, term, &p, end, env);
|
|
if (r < 0) return r;
|
|
|
|
if (NTYPE(*np) == N_ANCHOR)
|
|
NANCHOR(*np).target = target;
|
|
else {
|
|
NEFFECT(*np).target = target;
|
|
if (NEFFECT(*np).type == EFFECT_MEMORY) {
|
|
/* Don't move this to previous of parse_subexp() */
|
|
r = scan_env_set_mem_node(env, NEFFECT(*np).regnum, *np);
|
|
if (r != 0) return r;
|
|
}
|
|
}
|
|
|
|
*src = p;
|
|
return 0;
|
|
}
|
|
|
|
static const char* PopularQStr[] = {
|
|
"?", "*", "+", "??", "*?", "+?"
|
|
};
|
|
|
|
static const char* ReduceQStr[] = {
|
|
"", "", "*", "*?", "??", "+ and ??", "+? and ?"
|
|
};
|
|
|
|
static int
|
|
set_qualifier(Node* qnode, Node* target, int group, ScanEnv* env)
|
|
{
|
|
QualifierNode* qn;
|
|
|
|
qn = &(NQUALIFIER(qnode));
|
|
if (qn->lower == 1 && qn->upper == 1) {
|
|
return 1;
|
|
}
|
|
|
|
switch (NTYPE(target)) {
|
|
case N_STRING:
|
|
if (! group) {
|
|
StrNode* sn = &(NSTRING(target));
|
|
if (str_node_can_be_split(sn, env->enc)) {
|
|
Node* n = str_node_split_last_char(sn, env->enc);
|
|
if (IS_NOT_NULL(n)) {
|
|
qn->target = n;
|
|
return 2;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case N_QUALIFIER:
|
|
{ /* check redundant double repeat. */
|
|
/* verbose warn (?:.?)? etc... but not warn (.?)? etc... */
|
|
QualifierNode* qnt = &(NQUALIFIER(target));
|
|
int nestq_num = popular_qualifier_num(qn);
|
|
int targetq_num = popular_qualifier_num(qnt);
|
|
|
|
#ifdef USE_WARNING_REDUNDANT_NESTED_REPEAT_OPERATOR
|
|
if (!IS_QUALIFIER_BY_NUMBER(qn) && !IS_QUALIFIER_BY_NUMBER(qnt) &&
|
|
IS_SYNTAX_BV(env->syntax, ONIG_SYN_WARN_REDUNDANT_NESTED_REPEAT)) {
|
|
UChar buf[WARN_BUFSIZE];
|
|
|
|
switch(ReduceTypeTable[targetq_num][nestq_num]) {
|
|
case RQ_ASIS:
|
|
break;
|
|
|
|
case RQ_DEL:
|
|
if (onig_verb_warn != onig_null_warn) {
|
|
onig_snprintf_with_pattern(buf, WARN_BUFSIZE, env->enc,
|
|
env->pattern, env->pattern_end,
|
|
(UChar* )"redundant nested repeat operator");
|
|
(*onig_verb_warn)((char* )buf);
|
|
}
|
|
goto warn_exit;
|
|
break;
|
|
|
|
default:
|
|
if (onig_verb_warn != onig_null_warn) {
|
|
onig_snprintf_with_pattern(buf, WARN_BUFSIZE, env->enc,
|
|
env->pattern, env->pattern_end,
|
|
(UChar* )"nested repeat operator %s and %s was replaced with '%s'",
|
|
PopularQStr[targetq_num], PopularQStr[nestq_num],
|
|
ReduceQStr[ReduceTypeTable[targetq_num][nestq_num]]);
|
|
(*onig_verb_warn)((char* )buf);
|
|
}
|
|
goto warn_exit;
|
|
break;
|
|
}
|
|
}
|
|
|
|
warn_exit:
|
|
#endif
|
|
if (targetq_num >= 0) {
|
|
if (nestq_num >= 0) {
|
|
onig_reduce_nested_qualifier(qnode, target);
|
|
goto q_exit;
|
|
}
|
|
else if (targetq_num == 1 || targetq_num == 2) { /* * or + */
|
|
/* (?:a*){n,m}, (?:a+){n,m} => (?:a*){n,n}, (?:a+){n,n} */
|
|
if (! IS_REPEAT_INFINITE(qn->upper) && qn->upper > 1 && qn->greedy) {
|
|
qn->upper = (qn->lower == 0 ? 1 : qn->lower);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
qn->target = target;
|
|
q_exit:
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
make_compound_alt_node_from_cc(OnigAmbigType ambig_flag, OnigEncoding enc,
|
|
CClassNode* cc, Node** root)
|
|
{
|
|
int r, i, j, k, clen, len, ncode, n;
|
|
UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN];
|
|
Node **ptail, *snode = NULL_NODE;
|
|
const OnigCompAmbigCodes* ccs;
|
|
const OnigCompAmbigCodeItem* ci;
|
|
OnigAmbigType amb;
|
|
|
|
n = 0;
|
|
*root = NULL_NODE;
|
|
ptail = root;
|
|
|
|
|
|
for (amb = 0x01; amb <= ONIGENC_AMBIGUOUS_MATCH_LIMIT; amb <<= 1) {
|
|
if ((amb & ambig_flag) == 0) continue;
|
|
|
|
ncode = ONIGENC_GET_ALL_COMP_AMBIG_CODES(enc, amb, &ccs);
|
|
for (i = 0; i < ncode; i++) {
|
|
if (onig_is_code_in_cc(enc, ccs[i].code, cc)) {
|
|
for (j = 0; j < ccs[i].n; j++) {
|
|
ci = &(ccs[i].items[j]);
|
|
if (ci->len > 1) { /* compound only */
|
|
if (IS_CCLASS_NOT(cc)) clear_not_flag_cclass(cc, enc);
|
|
|
|
clen = ci->len;
|
|
for (k = 0; k < clen; k++) {
|
|
len = ONIGENC_CODE_TO_MBC(enc, ci->code[k], buf);
|
|
|
|
if (k == 0) {
|
|
snode = node_new_str_raw(buf, buf + len);
|
|
CHECK_NULL_RETURN_VAL(snode, ONIGERR_MEMORY);
|
|
}
|
|
else {
|
|
r = onig_node_str_cat(snode, buf, buf + len);
|
|
if (r < 0) return r;
|
|
}
|
|
}
|
|
|
|
*ptail = node_new_alt(snode, NULL_NODE);
|
|
CHECK_NULL_RETURN_VAL(*ptail, ONIGERR_MEMORY);
|
|
ptail = &(NCONS(*ptail).right);
|
|
n++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
|
|
#ifdef USE_SHARED_CCLASS_TABLE
|
|
|
|
#define THRESHOLD_RANGE_NUM_FOR_SHARE_CCLASS 8
|
|
|
|
/* for ctype node hash table */
|
|
|
|
typedef struct {
|
|
OnigEncoding enc;
|
|
int not;
|
|
int type;
|
|
} type_cclass_key;
|
|
|
|
static int type_cclass_cmp(type_cclass_key* x, type_cclass_key* y)
|
|
{
|
|
if (x->type != y->type) return 1;
|
|
if (x->enc != y->enc) return 1;
|
|
if (x->not != y->not) return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int type_cclass_hash(type_cclass_key* key)
|
|
{
|
|
int i, val;
|
|
unsigned char *p;
|
|
|
|
val = 0;
|
|
|
|
p = (unsigned char* )&(key->enc);
|
|
for (i = 0; i < sizeof(key->enc); i++) {
|
|
val = val * 997 + (int )*p++;
|
|
}
|
|
|
|
p = (unsigned char* )(&key->type);
|
|
for (i = 0; i < sizeof(key->type); i++) {
|
|
val = val * 997 + (int )*p++;
|
|
}
|
|
|
|
val += key->not;
|
|
return val + (val >> 5);
|
|
}
|
|
|
|
static struct st_hash_type type_type_cclass_hash = {
|
|
type_cclass_cmp,
|
|
type_cclass_hash,
|
|
};
|
|
|
|
static st_table* OnigTypeCClassTable;
|
|
|
|
|
|
static int
|
|
i_free_shared_class(type_cclass_key* key, Node* node, void* arg)
|
|
{
|
|
if (IS_NOT_NULL(node)) {
|
|
CClassNode* cc = &(NCCLASS(node));
|
|
if (IS_NOT_NULL(cc->mbuf)) xfree(cc->mbuf);
|
|
xfree(node);
|
|
}
|
|
|
|
if (IS_NOT_NULL(key)) xfree(key);
|
|
return ST_DELETE;
|
|
}
|
|
|
|
extern int
|
|
onig_free_shared_cclass_table()
|
|
{
|
|
if (IS_NOT_NULL(OnigTypeCClassTable)) {
|
|
onig_st_foreach(OnigTypeCClassTable, i_free_shared_class, 0);
|
|
xfree(OnigTypeCClassTable);
|
|
OnigTypeCClassTable = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* USE_SHARED_CCLASS_TABLE */
|
|
|
|
|
|
static int
|
|
parse_exp(Node** np, OnigToken* tok, int term,
|
|
UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
int r, len, group = 0;
|
|
Node* qn;
|
|
Node** targetp;
|
|
|
|
*np = NULL;
|
|
if (tok->type == term)
|
|
goto end_of_token;
|
|
|
|
switch (tok->type) {
|
|
case TK_ALT:
|
|
case TK_EOT:
|
|
end_of_token:
|
|
*np = node_new_empty();
|
|
return tok->type;
|
|
break;
|
|
|
|
case TK_SUBEXP_OPEN:
|
|
r = parse_effect(np, tok, TK_SUBEXP_CLOSE, src, end, env);
|
|
if (r < 0) return r;
|
|
if (r == 1) group = 1;
|
|
else if (r == 2) { /* option only */
|
|
Node* target;
|
|
OnigOptionType prev = env->option;
|
|
|
|
env->option = NEFFECT(*np).option;
|
|
r = fetch_token(tok, src, end, env);
|
|
if (r < 0) return r;
|
|
r = parse_subexp(&target, tok, term, src, end, env);
|
|
env->option = prev;
|
|
if (r < 0) return r;
|
|
NEFFECT(*np).target = target;
|
|
return tok->type;
|
|
}
|
|
break;
|
|
|
|
case TK_SUBEXP_CLOSE:
|
|
if (! IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_UNMATCHED_CLOSE_SUBEXP))
|
|
return ONIGERR_UNMATCHED_CLOSE_PARENTHESIS;
|
|
|
|
if (tok->escaped) goto tk_raw_byte;
|
|
else goto tk_byte;
|
|
break;
|
|
|
|
case TK_STRING:
|
|
tk_byte:
|
|
{
|
|
*np = node_new_str(tok->backp, *src);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
|
|
while (1) {
|
|
r = fetch_token(tok, src, end, env);
|
|
if (r < 0) return r;
|
|
if (r != TK_STRING) break;
|
|
|
|
r = onig_node_str_cat(*np, tok->backp, *src);
|
|
if (r < 0) return r;
|
|
}
|
|
|
|
string_end:
|
|
targetp = np;
|
|
goto repeat;
|
|
}
|
|
break;
|
|
|
|
case TK_RAW_BYTE:
|
|
tk_raw_byte:
|
|
{
|
|
*np = node_new_str_raw_char((UChar )tok->u.c);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
len = 1;
|
|
while (1) {
|
|
r = fetch_token(tok, src, end, env);
|
|
if (r < 0) return r;
|
|
if (r != TK_RAW_BYTE) {
|
|
#ifndef NUMBERED_CHAR_IS_NOT_CASE_AMBIG
|
|
if (len >= enc_len(env->enc, NSTRING(*np).s)) {
|
|
NSTRING_CLEAR_RAW(*np);
|
|
}
|
|
#endif
|
|
goto string_end;
|
|
}
|
|
|
|
r = node_str_cat_char(*np, (UChar )tok->u.c);
|
|
if (r < 0) return r;
|
|
len++;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case TK_CODE_POINT:
|
|
{
|
|
UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN];
|
|
int num = ONIGENC_CODE_TO_MBC(env->enc, tok->u.code, buf);
|
|
if (num < 0) return num;
|
|
#ifdef NUMBERED_CHAR_IS_NOT_CASE_AMBIG
|
|
*np = node_new_str_raw(buf, buf + num);
|
|
#else
|
|
*np = node_new_str(buf, buf + num);
|
|
#endif
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
}
|
|
break;
|
|
|
|
case TK_QUOTE_OPEN:
|
|
{
|
|
OnigCodePoint end_op[2];
|
|
UChar *qstart, *qend, *nextp;
|
|
|
|
end_op[0] = (OnigCodePoint )MC_ESC(env->enc);
|
|
end_op[1] = (OnigCodePoint )'E';
|
|
qstart = *src;
|
|
qend = find_str_position(end_op, 2, qstart, end, &nextp, env->enc);
|
|
if (IS_NULL(qend)) {
|
|
nextp = qend = end;
|
|
}
|
|
*np = node_new_str(qstart, qend);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
*src = nextp;
|
|
}
|
|
break;
|
|
|
|
case TK_CHAR_TYPE:
|
|
{
|
|
switch (tok->u.subtype) {
|
|
case CTYPE_WORD:
|
|
case CTYPE_NOT_WORD:
|
|
*np = node_new_ctype(tok->u.subtype);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
break;
|
|
|
|
case CTYPE_WHITE_SPACE:
|
|
case CTYPE_NOT_WHITE_SPACE:
|
|
case CTYPE_DIGIT:
|
|
case CTYPE_NOT_DIGIT:
|
|
case CTYPE_XDIGIT:
|
|
case CTYPE_NOT_XDIGIT:
|
|
{
|
|
CClassNode* cc;
|
|
int ctype, not;
|
|
|
|
#ifdef USE_SHARED_CCLASS_TABLE
|
|
const OnigCodePoint *sbr, *mbr;
|
|
|
|
ctype = parse_ctype_to_enc_ctype(tok->u.subtype, ¬);
|
|
r = ONIGENC_GET_CTYPE_CODE_RANGE(env->enc, ctype, &sbr, &mbr);
|
|
if (r == 0 &&
|
|
ONIGENC_CODE_RANGE_NUM(mbr)
|
|
>= THRESHOLD_RANGE_NUM_FOR_SHARE_CCLASS) {
|
|
type_cclass_key key;
|
|
type_cclass_key* new_key;
|
|
|
|
key.enc = env->enc;
|
|
key.not = not;
|
|
key.type = ctype;
|
|
|
|
THREAD_ATOMIC_START;
|
|
|
|
if (IS_NULL(OnigTypeCClassTable)) {
|
|
OnigTypeCClassTable
|
|
= onig_st_init_table_with_size(&type_type_cclass_hash, 10);
|
|
if (IS_NULL(OnigTypeCClassTable)) {
|
|
THREAD_ATOMIC_END;
|
|
return ONIGERR_MEMORY;
|
|
}
|
|
}
|
|
else {
|
|
if (onig_st_lookup(OnigTypeCClassTable, (st_data_t )&key,
|
|
(st_data_t* )np)) {
|
|
THREAD_ATOMIC_END;
|
|
break;
|
|
}
|
|
}
|
|
|
|
*np = node_new_cclass_by_codepoint_range(not, sbr, mbr);
|
|
if (IS_NULL(*np)) {
|
|
THREAD_ATOMIC_END;
|
|
return ONIGERR_MEMORY;
|
|
}
|
|
|
|
CCLASS_SET_SHARE(&(NCCLASS(*np)));
|
|
new_key = (type_cclass_key* )xmalloc(sizeof(type_cclass_key));
|
|
onig_st_add_direct(OnigTypeCClassTable, (st_data_t )new_key,
|
|
(st_data_t )*np);
|
|
|
|
THREAD_ATOMIC_END;
|
|
}
|
|
else {
|
|
#endif
|
|
ctype = parse_ctype_to_enc_ctype(tok->u.subtype, ¬);
|
|
*np = node_new_cclass();
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
cc = &(NCCLASS(*np));
|
|
add_ctype_to_cc(cc, ctype, 0, env);
|
|
if (not != 0) CCLASS_SET_NOT(cc);
|
|
#ifdef USE_SHARED_CCLASS_TABLE
|
|
}
|
|
#endif
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return ONIGERR_PARSER_BUG;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case TK_CHAR_PROPERTY:
|
|
r = parse_char_property(np, tok, src, end, env);
|
|
if (r != 0) return r;
|
|
break;
|
|
|
|
case TK_CC_OPEN:
|
|
{
|
|
CClassNode* cc;
|
|
|
|
r = parse_char_class(np, tok, src, end, env);
|
|
if (r != 0) return r;
|
|
|
|
cc = &(NCCLASS(*np));
|
|
|
|
if (IS_IGNORECASE(env->option)) {
|
|
int i, n, in_cc;
|
|
const OnigPairAmbigCodes* ccs;
|
|
BitSetRef bs = cc->bs;
|
|
OnigAmbigType amb;
|
|
|
|
for (amb = 0x01; amb <= ONIGENC_AMBIGUOUS_MATCH_LIMIT; amb <<= 1) {
|
|
if ((amb & env->ambig_flag) == 0) continue;
|
|
|
|
n = ONIGENC_GET_ALL_PAIR_AMBIG_CODES(env->enc, amb, &ccs);
|
|
for (i = 0; i < n; i++) {
|
|
in_cc = onig_is_code_in_cc(env->enc, ccs[i].from, cc);
|
|
|
|
if ((in_cc != 0 && !IS_CCLASS_NOT(cc)) ||
|
|
(in_cc == 0 && IS_CCLASS_NOT(cc))) {
|
|
if (ONIGENC_MBC_MINLEN(env->enc) > 1 ||
|
|
ccs[i].from >= SINGLE_BYTE_SIZE) {
|
|
/* if (cc->not) clear_not_flag_cclass(cc, env->enc); */
|
|
add_code_range(&(cc->mbuf), env, ccs[i].to, ccs[i].to);
|
|
}
|
|
else {
|
|
if (BITSET_AT(bs, ccs[i].from)) {
|
|
/* /(?i:[^A-C])/.match("a") ==> fail. */
|
|
BITSET_SET_BIT(bs, ccs[i].to);
|
|
}
|
|
if (BITSET_AT(bs, ccs[i].to)) {
|
|
BITSET_SET_BIT(bs, ccs[i].from);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (IS_IGNORECASE(env->option) &&
|
|
(env->ambig_flag & ONIGENC_AMBIGUOUS_MATCH_COMPOUND) != 0) {
|
|
int res;
|
|
Node *alt_root, *work;
|
|
|
|
res = make_compound_alt_node_from_cc(env->ambig_flag, env->enc,
|
|
cc, &alt_root);
|
|
if (res < 0) return res;
|
|
if (res > 0) {
|
|
work = node_new_alt(*np, alt_root);
|
|
if (IS_NULL(work)) {
|
|
onig_node_free(alt_root);
|
|
return ONIGERR_MEMORY;
|
|
}
|
|
*np = work;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case TK_ANYCHAR:
|
|
*np = node_new_anychar();
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
break;
|
|
|
|
case TK_ANYCHAR_ANYTIME:
|
|
*np = node_new_anychar();
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
qn = node_new_qualifier(0, REPEAT_INFINITE, 0);
|
|
CHECK_NULL_RETURN_VAL(qn, ONIGERR_MEMORY);
|
|
NQUALIFIER(qn).target = *np;
|
|
*np = qn;
|
|
break;
|
|
|
|
case TK_BACKREF:
|
|
len = tok->u.backref.num;
|
|
*np = node_new_backref(len,
|
|
(len > 1 ? tok->u.backref.refs : &(tok->u.backref.ref1)),
|
|
tok->u.backref.by_name,
|
|
#ifdef USE_BACKREF_AT_LEVEL
|
|
tok->u.backref.exist_level,
|
|
tok->u.backref.level,
|
|
#endif
|
|
env);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
break;
|
|
|
|
#ifdef USE_SUBEXP_CALL
|
|
case TK_CALL:
|
|
*np = node_new_call(tok->u.call.name, tok->u.call.name_end);
|
|
CHECK_NULL_RETURN_VAL(*np, ONIGERR_MEMORY);
|
|
env->num_call++;
|
|
break;
|
|
#endif
|
|
|
|
case TK_ANCHOR:
|
|
*np = onig_node_new_anchor(tok->u.anchor);
|
|
break;
|
|
|
|
case TK_OP_REPEAT:
|
|
case TK_INTERVAL:
|
|
if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_CONTEXT_INDEP_REPEAT_OPS)) {
|
|
if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_CONTEXT_INVALID_REPEAT_OPS))
|
|
return ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED;
|
|
else
|
|
*np = node_new_empty();
|
|
}
|
|
else {
|
|
goto tk_byte;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return ONIGERR_PARSER_BUG;
|
|
break;
|
|
}
|
|
|
|
{
|
|
targetp = np;
|
|
|
|
re_entry:
|
|
r = fetch_token(tok, src, end, env);
|
|
if (r < 0) return r;
|
|
|
|
repeat:
|
|
if (r == TK_OP_REPEAT || r == TK_INTERVAL) {
|
|
if (is_invalid_qualifier_target(*targetp))
|
|
return ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID;
|
|
|
|
qn = node_new_qualifier(tok->u.repeat.lower, tok->u.repeat.upper,
|
|
(r == TK_INTERVAL ? 1 : 0));
|
|
CHECK_NULL_RETURN_VAL(qn, ONIGERR_MEMORY);
|
|
NQUALIFIER(qn).greedy = tok->u.repeat.greedy;
|
|
r = set_qualifier(qn, *targetp, group, env);
|
|
if (r < 0) return r;
|
|
|
|
if (tok->u.repeat.possessive != 0) {
|
|
Node* en;
|
|
en = node_new_effect(EFFECT_STOP_BACKTRACK);
|
|
CHECK_NULL_RETURN_VAL(en, ONIGERR_MEMORY);
|
|
NEFFECT(en).target = qn;
|
|
qn = en;
|
|
}
|
|
|
|
if (r == 0) {
|
|
*targetp = qn;
|
|
}
|
|
else if (r == 2) { /* split case: /abc+/ */
|
|
Node *tmp;
|
|
|
|
*targetp = node_new_list(*targetp, NULL);
|
|
CHECK_NULL_RETURN_VAL(*targetp, ONIGERR_MEMORY);
|
|
tmp = NCONS(*targetp).right = node_new_list(qn, NULL);
|
|
CHECK_NULL_RETURN_VAL(tmp, ONIGERR_MEMORY);
|
|
targetp = &(NCONS(tmp).left);
|
|
}
|
|
goto re_entry;
|
|
}
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static int
|
|
parse_branch(Node** top, OnigToken* tok, int term,
|
|
UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
int r;
|
|
Node *node, **headp;
|
|
|
|
*top = NULL;
|
|
r = parse_exp(&node, tok, term, src, end, env);
|
|
if (r < 0) return r;
|
|
|
|
if (r == TK_EOT || r == term || r == TK_ALT) {
|
|
*top = node;
|
|
}
|
|
else {
|
|
*top = node_new_list(node, NULL);
|
|
headp = &(NCONS(*top).right);
|
|
while (r != TK_EOT && r != term && r != TK_ALT) {
|
|
r = parse_exp(&node, tok, term, src, end, env);
|
|
if (r < 0) return r;
|
|
|
|
if (NTYPE(node) == N_LIST) {
|
|
*headp = node;
|
|
while (IS_NOT_NULL(NCONS(node).right)) node = NCONS(node).right;
|
|
headp = &(NCONS(node).right);
|
|
}
|
|
else {
|
|
*headp = node_new_list(node, NULL);
|
|
headp = &(NCONS(*headp).right);
|
|
}
|
|
}
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/* term_tok: TK_EOT or TK_SUBEXP_CLOSE */
|
|
static int
|
|
parse_subexp(Node** top, OnigToken* tok, int term,
|
|
UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
int r;
|
|
Node *node, **headp;
|
|
|
|
*top = NULL;
|
|
r = parse_branch(&node, tok, term, src, end, env);
|
|
if (r < 0) {
|
|
onig_node_free(node);
|
|
return r;
|
|
}
|
|
|
|
if (r == term) {
|
|
*top = node;
|
|
}
|
|
else if (r == TK_ALT) {
|
|
*top = node_new_alt(node, NULL);
|
|
headp = &(NCONS(*top).right);
|
|
while (r == TK_ALT) {
|
|
r = fetch_token(tok, src, end, env);
|
|
if (r < 0) return r;
|
|
r = parse_branch(&node, tok, term, src, end, env);
|
|
if (r < 0) return r;
|
|
|
|
*headp = node_new_alt(node, NULL);
|
|
headp = &(NCONS(*headp).right);
|
|
}
|
|
|
|
if (tok->type != term)
|
|
goto err;
|
|
}
|
|
else {
|
|
err:
|
|
if (term == TK_SUBEXP_CLOSE)
|
|
return ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS;
|
|
else
|
|
return ONIGERR_PARSER_BUG;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static int
|
|
parse_regexp(Node** top, UChar** src, UChar* end, ScanEnv* env)
|
|
{
|
|
int r;
|
|
OnigToken tok;
|
|
|
|
r = fetch_token(&tok, src, end, env);
|
|
if (r < 0) return r;
|
|
r = parse_subexp(top, &tok, TK_EOT, src, end, env);
|
|
if (r < 0) return r;
|
|
return 0;
|
|
}
|
|
|
|
extern int
|
|
onig_parse_make_tree(Node** root, const UChar* pattern, const UChar* end, regex_t* reg,
|
|
ScanEnv* env)
|
|
{
|
|
int r;
|
|
UChar* p;
|
|
|
|
#ifdef USE_NAMED_GROUP
|
|
names_clear(reg);
|
|
#endif
|
|
|
|
scan_env_clear(env);
|
|
env->option = reg->options;
|
|
env->ambig_flag = reg->ambig_flag;
|
|
env->enc = reg->enc;
|
|
env->syntax = reg->syntax;
|
|
env->pattern = (UChar* )pattern;
|
|
env->pattern_end = (UChar* )end;
|
|
env->reg = reg;
|
|
|
|
*root = NULL;
|
|
p = (UChar* )pattern;
|
|
r = parse_regexp(root, &p, (UChar* )end, env);
|
|
reg->num_mem = env->num_mem;
|
|
return r;
|
|
}
|
|
|
|
extern void
|
|
onig_scan_env_set_error_string(ScanEnv* env, int ecode,
|
|
UChar* arg, UChar* arg_end)
|
|
{
|
|
env->error = arg;
|
|
env->error_end = arg_end;
|
|
}
|