/
regexec.c
5834 lines (5093 loc) · 144 KB
/
regexec.c
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/**********************************************************************
regexec.c - Oniguruma (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2019 K.Kosako
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "regint.h"
#define IS_MBC_WORD_ASCII_MODE(enc,s,end,mode) \
((mode) == 0 ? ONIGENC_IS_MBC_WORD(enc,s,end) : ONIGENC_IS_MBC_WORD_ASCII(enc,s,end))
#ifdef USE_CRNL_AS_LINE_TERMINATOR
#define ONIGENC_IS_MBC_CRNL(enc,p,end) \
(ONIGENC_MBC_TO_CODE(enc,p,end) == 13 && \
ONIGENC_IS_MBC_NEWLINE(enc,(p+enclen(enc,p)),end))
#endif
#define CHECK_INTERRUPT_IN_MATCH
#ifdef USE_CALLOUT
typedef struct {
int last_match_at_call_counter;
struct {
OnigType type;
OnigValue val;
} slot[ONIG_CALLOUT_DATA_SLOT_NUM];
} CalloutData;
#endif
struct OnigMatchParamStruct {
unsigned int match_stack_limit;
unsigned long retry_limit_in_match;
#ifdef USE_CALLOUT
OnigCalloutFunc progress_callout_of_contents;
OnigCalloutFunc retraction_callout_of_contents;
int match_at_call_counter;
void* callout_user_data;
CalloutData* callout_data;
int callout_data_alloc_num;
#endif
};
extern int
onig_set_match_stack_limit_size_of_match_param(OnigMatchParam* param,
unsigned int limit)
{
param->match_stack_limit = limit;
return ONIG_NORMAL;
}
extern int
onig_set_retry_limit_in_match_of_match_param(OnigMatchParam* param,
unsigned long limit)
{
param->retry_limit_in_match = limit;
return ONIG_NORMAL;
}
extern int
onig_set_progress_callout_of_match_param(OnigMatchParam* param, OnigCalloutFunc f)
{
#ifdef USE_CALLOUT
param->progress_callout_of_contents = f;
return ONIG_NORMAL;
#else
return ONIG_NO_SUPPORT_CONFIG;
#endif
}
extern int
onig_set_retraction_callout_of_match_param(OnigMatchParam* param, OnigCalloutFunc f)
{
#ifdef USE_CALLOUT
param->retraction_callout_of_contents = f;
return ONIG_NORMAL;
#else
return ONIG_NO_SUPPORT_CONFIG;
#endif
}
extern int
onig_set_callout_user_data_of_match_param(OnigMatchParam* param, void* user_data)
{
#ifdef USE_CALLOUT
param->callout_user_data = user_data;
return ONIG_NORMAL;
#else
return ONIG_NO_SUPPORT_CONFIG;
#endif
}
typedef struct {
void* stack_p;
int stack_n;
OnigOptionType options;
OnigRegion* region;
int ptr_num;
const UChar* start; /* search start position (for \G: BEGIN_POSITION) */
unsigned int match_stack_limit;
unsigned long retry_limit_in_match;
OnigMatchParam* mp;
#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE
int best_len; /* for ONIG_OPTION_FIND_LONGEST */
UChar* best_s;
#endif
} MatchArg;
#ifdef ONIG_DEBUG
/* arguments type */
typedef enum {
ARG_SPECIAL = -1,
ARG_NON = 0,
ARG_RELADDR = 1,
ARG_ABSADDR = 2,
ARG_LENGTH = 3,
ARG_MEMNUM = 4,
ARG_OPTION = 5,
ARG_MODE = 6
} OpArgType;
typedef struct {
short int opcode;
char* name;
} OpInfoType;
static OpInfoType OpInfo[] = {
{ OP_FINISH, "finish" },
{ OP_END, "end" },
{ OP_EXACT1, "exact1" },
{ OP_EXACT2, "exact2" },
{ OP_EXACT3, "exact3" },
{ OP_EXACT4, "exact4" },
{ OP_EXACT5, "exact5" },
{ OP_EXACTN, "exactn" },
{ OP_EXACTMB2N1, "exactmb2-n1" },
{ OP_EXACTMB2N2, "exactmb2-n2" },
{ OP_EXACTMB2N3, "exactmb2-n3" },
{ OP_EXACTMB2N, "exactmb2-n" },
{ OP_EXACTMB3N, "exactmb3n" },
{ OP_EXACTMBN, "exactmbn" },
{ OP_EXACT1_IC, "exact1-ic" },
{ OP_EXACTN_IC, "exactn-ic" },
{ OP_CCLASS, "cclass" },
{ OP_CCLASS_MB, "cclass-mb" },
{ OP_CCLASS_MIX, "cclass-mix" },
{ OP_CCLASS_NOT, "cclass-not" },
{ OP_CCLASS_MB_NOT, "cclass-mb-not" },
{ OP_CCLASS_MIX_NOT, "cclass-mix-not" },
{ OP_ANYCHAR, "anychar" },
{ OP_ANYCHAR_ML, "anychar-ml" },
{ OP_ANYCHAR_STAR, "anychar*" },
{ OP_ANYCHAR_ML_STAR, "anychar-ml*" },
{ OP_ANYCHAR_STAR_PEEK_NEXT, "anychar*-peek-next" },
{ OP_ANYCHAR_ML_STAR_PEEK_NEXT, "anychar-ml*-peek-next" },
{ OP_WORD, "word" },
{ OP_WORD_ASCII, "word-ascii" },
{ OP_NO_WORD, "not-word" },
{ OP_NO_WORD_ASCII, "not-word-ascii" },
{ OP_WORD_BOUNDARY, "word-boundary" },
{ OP_NO_WORD_BOUNDARY, "not-word-boundary" },
{ OP_WORD_BEGIN, "word-begin" },
{ OP_WORD_END, "word-end" },
{ OP_TEXT_SEGMENT_BOUNDARY, "text-segment-boundary" },
{ OP_BEGIN_BUF, "begin-buf" },
{ OP_END_BUF, "end-buf" },
{ OP_BEGIN_LINE, "begin-line" },
{ OP_END_LINE, "end-line" },
{ OP_SEMI_END_BUF, "semi-end-buf" },
{ OP_BEGIN_POSITION, "begin-position" },
{ OP_BACKREF1, "backref1" },
{ OP_BACKREF2, "backref2" },
{ OP_BACKREF_N, "backref-n" },
{ OP_BACKREF_N_IC, "backref-n-ic" },
{ OP_BACKREF_MULTI, "backref_multi" },
{ OP_BACKREF_MULTI_IC, "backref_multi-ic" },
{ OP_BACKREF_WITH_LEVEL, "backref_with_level" },
{ OP_BACKREF_WITH_LEVEL_IC, "backref_with_level-c" },
{ OP_BACKREF_CHECK, "backref_check" },
{ OP_BACKREF_CHECK_WITH_LEVEL, "backref_check_with_level" },
{ OP_MEMORY_START_PUSH, "mem-start-push" },
{ OP_MEMORY_START, "mem-start" },
{ OP_MEMORY_END_PUSH, "mem-end-push" },
{ OP_MEMORY_END_PUSH_REC, "mem-end-push-rec" },
{ OP_MEMORY_END, "mem-end" },
{ OP_MEMORY_END_REC, "mem-end-rec" },
{ OP_FAIL, "fail" },
{ OP_JUMP, "jump" },
{ OP_PUSH, "push" },
{ OP_PUSH_SUPER, "push-super" },
{ OP_POP_OUT, "pop-out" },
#ifdef USE_OP_PUSH_OR_JUMP_EXACT
{ OP_PUSH_OR_JUMP_EXACT1, "push-or-jump-e1" },
#endif
{ OP_PUSH_IF_PEEK_NEXT, "push-if-peek-next" },
{ OP_REPEAT, "repeat" },
{ OP_REPEAT_NG, "repeat-ng" },
{ OP_REPEAT_INC, "repeat-inc" },
{ OP_REPEAT_INC_NG, "repeat-inc-ng" },
{ OP_REPEAT_INC_SG, "repeat-inc-sg" },
{ OP_REPEAT_INC_NG_SG, "repeat-inc-ng-sg" },
{ OP_EMPTY_CHECK_START, "empty-check-start" },
{ OP_EMPTY_CHECK_END, "empty-check-end" },
{ OP_EMPTY_CHECK_END_MEMST, "empty-check-end-memst" },
{ OP_EMPTY_CHECK_END_MEMST_PUSH,"empty-check-end-memst-push" },
{ OP_PREC_READ_START, "push-pos" },
{ OP_PREC_READ_END, "pop-pos" },
{ OP_PREC_READ_NOT_START, "prec-read-not-start" },
{ OP_PREC_READ_NOT_END, "prec-read-not-end" },
{ OP_ATOMIC_START, "atomic-start" },
{ OP_ATOMIC_END, "atomic-end" },
{ OP_LOOK_BEHIND, "look-behind" },
{ OP_LOOK_BEHIND_NOT_START, "look-behind-not-start" },
{ OP_LOOK_BEHIND_NOT_END, "look-behind-not-end" },
{ OP_CALL, "call" },
{ OP_RETURN, "return" },
{ OP_PUSH_SAVE_VAL, "push-save-val" },
{ OP_UPDATE_VAR, "update-var" },
#ifdef USE_CALLOUT
{ OP_CALLOUT_CONTENTS, "callout-contents" },
{ OP_CALLOUT_NAME, "callout-name" },
#endif
{ -1, "" }
};
static char*
op2name(int opcode)
{
int i;
for (i = 0; OpInfo[i].opcode >= 0; i++) {
if (opcode == OpInfo[i].opcode) return OpInfo[i].name;
}
return "";
}
static void
p_string(FILE* f, int len, UChar* s)
{
fputs(":", f);
while (len-- > 0) { fputc(*s++, f); }
}
static void
p_len_string(FILE* f, LengthType len, int mb_len, UChar* s)
{
int x = len * mb_len;
fprintf(f, ":%d:", len);
while (x-- > 0) { fputc(*s++, f); }
}
static void
p_rel_addr(FILE* f, RelAddrType rel_addr, Operation* p, Operation* start)
{
RelAddrType curr = (RelAddrType )(p - start);
fprintf(f, "{%d/%d}", rel_addr, curr + rel_addr);
}
static int
bitset_on_num(BitSetRef bs)
{
int i, n;
n = 0;
for (i = 0; i < SINGLE_BYTE_SIZE; i++) {
if (BITSET_AT(bs, i)) n++;
}
return n;
}
static void
print_compiled_byte_code(FILE* f, regex_t* reg, int index,
Operation* start, OnigEncoding enc)
{
int i, n;
RelAddrType addr;
LengthType len;
MemNumType mem;
OnigCodePoint code;
ModeType mode;
UChar *q;
Operation* p;
enum OpCode opcode;
p = reg->ops + index;
#ifdef USE_DIRECT_THREADED_CODE
opcode = reg->ocs[index];
#else
opcode = p->opcode;
#endif
fprintf(f, "%s", op2name(opcode));
switch (opcode) {
case OP_EXACT1:
p_string(f, 1, p->exact.s); break;
case OP_EXACT2:
p_string(f, 2, p->exact.s); break;
case OP_EXACT3:
p_string(f, 3, p->exact.s); break;
case OP_EXACT4:
p_string(f, 4, p->exact.s); break;
case OP_EXACT5:
p_string(f, 5, p->exact.s); break;
case OP_EXACTN:
len = p->exact_n.n;
p_string(f, len, p->exact_n.s); break;
case OP_EXACTMB2N1:
p_string(f, 2, p->exact.s); break;
case OP_EXACTMB2N2:
p_string(f, 4, p->exact.s); break;
case OP_EXACTMB2N3:
p_string(f, 3, p->exact.s); break;
case OP_EXACTMB2N:
len = p->exact_n.n;
p_len_string(f, len, 2, p->exact_n.s); break;
case OP_EXACTMB3N:
len = p->exact_n.n;
p_len_string(f, len, 3, p->exact_n.s); break;
case OP_EXACTMBN:
{
int mb_len;
mb_len = p->exact_len_n.len;
len = p->exact_len_n.n;
q = p->exact_len_n.s;
fprintf(f, ":%d:%d:", mb_len, len);
n = len * mb_len;
while (n-- > 0) { fputc(*q++, f); }
}
break;
case OP_EXACT1_IC:
len = enclen(enc, p->exact.s);
p_string(f, len, p->exact.s);
break;
case OP_EXACTN_IC:
len = p->exact_n.n;
p_len_string(f, len, 1, p->exact_n.s);
break;
case OP_CCLASS:
case OP_CCLASS_NOT:
n = bitset_on_num(p->cclass.bsp);
fprintf(f, ":%d", n);
break;
case OP_CCLASS_MB:
case OP_CCLASS_MB_NOT:
{
OnigCodePoint ncode;
OnigCodePoint* codes;
codes = (OnigCodePoint* )p->cclass_mb.mb;
GET_CODE_POINT(ncode, codes);
codes++;
GET_CODE_POINT(code, codes);
fprintf(f, ":%u:%u", code, ncode);
}
break;
case OP_CCLASS_MIX:
case OP_CCLASS_MIX_NOT:
{
OnigCodePoint ncode;
OnigCodePoint* codes;
codes = (OnigCodePoint* )p->cclass_mix.mb;
n = bitset_on_num(p->cclass_mix.bsp);
GET_CODE_POINT(ncode, codes);
codes++;
GET_CODE_POINT(code, codes);
fprintf(f, ":%d:%u:%u", n, code, ncode);
}
break;
case OP_ANYCHAR_STAR_PEEK_NEXT:
case OP_ANYCHAR_ML_STAR_PEEK_NEXT:
p_string(f, 1, &(p->anychar_star_peek_next.c));
break;
case OP_WORD_BOUNDARY:
case OP_NO_WORD_BOUNDARY:
case OP_WORD_BEGIN:
case OP_WORD_END:
mode = p->word_boundary.mode;
fprintf(f, ":%d", mode);
break;
case OP_BACKREF_N:
case OP_BACKREF_N_IC:
mem = p->backref_n.n1;
fprintf(f, ":%d", mem);
break;
case OP_BACKREF_MULTI_IC:
case OP_BACKREF_MULTI:
case OP_BACKREF_CHECK:
fputs(" ", f);
n = p->backref_general.num;
for (i = 0; i < n; i++) {
mem = (n == 1) ? p->backref_general.n1 : p->backref_general.ns[i];
if (i > 0) fputs(", ", f);
fprintf(f, "%d", mem);
}
break;
case OP_BACKREF_WITH_LEVEL:
case OP_BACKREF_WITH_LEVEL_IC:
case OP_BACKREF_CHECK_WITH_LEVEL:
{
LengthType level;
level = p->backref_general.nest_level;
fprintf(f, ":%d", level);
fputs(" ", f);
n = p->backref_general.num;
for (i = 0; i < n; i++) {
mem = (n == 1) ? p->backref_general.n1 : p->backref_general.ns[i];
if (i > 0) fputs(", ", f);
fprintf(f, "%d", mem);
}
}
break;
case OP_MEMORY_START:
case OP_MEMORY_START_PUSH:
mem = p->memory_start.num;
fprintf(f, ":%d", mem);
break;
case OP_MEMORY_END_PUSH:
case OP_MEMORY_END_PUSH_REC:
case OP_MEMORY_END:
case OP_MEMORY_END_REC:
mem = p->memory_end.num;
fprintf(f, ":%d", mem);
break;
case OP_JUMP:
addr = p->jump.addr;
fputc(':', f);
p_rel_addr(f, addr, p, start);
break;
case OP_PUSH:
case OP_PUSH_SUPER:
addr = p->push.addr;
fputc(':', f);
p_rel_addr(f, addr, p, start);
break;
#ifdef USE_OP_PUSH_OR_JUMP_EXACT
case OP_PUSH_OR_JUMP_EXACT1:
addr = p->push_or_jump_exact1.addr;
fputc(':', f);
p_rel_addr(f, addr, p, start);
p_string(f, 1, &(p->push_or_jump_exact1.c));
break;
#endif
case OP_PUSH_IF_PEEK_NEXT:
addr = p->push_if_peek_next.addr;
fputc(':', f);
p_rel_addr(f, addr, p, start);
p_string(f, 1, &(p->push_if_peek_next.c));
break;
case OP_REPEAT:
case OP_REPEAT_NG:
mem = p->repeat.id;
addr = p->repeat.addr;
fprintf(f, ":%d:", mem);
p_rel_addr(f, addr, p, start);
break;
case OP_REPEAT_INC:
case OP_REPEAT_INC_NG:
case OP_REPEAT_INC_SG:
case OP_REPEAT_INC_NG_SG:
mem = p->repeat.id;
fprintf(f, ":%d", mem);
break;
case OP_EMPTY_CHECK_START:
mem = p->empty_check_start.mem;
fprintf(f, ":%d", mem);
break;
case OP_EMPTY_CHECK_END:
case OP_EMPTY_CHECK_END_MEMST:
case OP_EMPTY_CHECK_END_MEMST_PUSH:
mem = p->empty_check_end.mem;
fprintf(f, ":%d", mem);
break;
case OP_PREC_READ_NOT_START:
addr = p->prec_read_not_start.addr;
fputc(':', f);
p_rel_addr(f, addr, p, start);
break;
case OP_LOOK_BEHIND:
len = p->look_behind.len;
fprintf(f, ":%d", len);
break;
case OP_LOOK_BEHIND_NOT_START:
addr = p->look_behind_not_start.addr;
len = p->look_behind_not_start.len;
fprintf(f, ":%d:", len);
p_rel_addr(f, addr, p, start);
break;
case OP_CALL:
addr = p->call.addr;
fprintf(f, ":{/%d}", addr);
break;
case OP_PUSH_SAVE_VAL:
{
SaveType type;
type = p->push_save_val.type;
mem = p->push_save_val.id;
fprintf(f, ":%d:%d", type, mem);
}
break;
case OP_UPDATE_VAR:
{
UpdateVarType type;
type = p->update_var.type;
mem = p->update_var.id;
fprintf(f, ":%d:%d", type, mem);
}
break;
#ifdef USE_CALLOUT
case OP_CALLOUT_CONTENTS:
mem = p->callout_contents.num;
fprintf(f, ":%d", mem);
break;
case OP_CALLOUT_NAME:
{
int id;
id = p->callout_name.id;
mem = p->callout_name.num;
fprintf(f, ":%d:%d", id, mem);
}
break;
#endif
case OP_TEXT_SEGMENT_BOUNDARY:
if (p->text_segment_boundary.not != 0)
fprintf(f, ":not");
break;
case OP_FINISH:
case OP_END:
case OP_ANYCHAR:
case OP_ANYCHAR_ML:
case OP_ANYCHAR_STAR:
case OP_ANYCHAR_ML_STAR:
case OP_WORD:
case OP_WORD_ASCII:
case OP_NO_WORD:
case OP_NO_WORD_ASCII:
case OP_BEGIN_BUF:
case OP_END_BUF:
case OP_BEGIN_LINE:
case OP_END_LINE:
case OP_SEMI_END_BUF:
case OP_BEGIN_POSITION:
case OP_BACKREF1:
case OP_BACKREF2:
case OP_FAIL:
case OP_POP_OUT:
case OP_PREC_READ_START:
case OP_PREC_READ_END:
case OP_PREC_READ_NOT_END:
case OP_ATOMIC_START:
case OP_ATOMIC_END:
case OP_LOOK_BEHIND_NOT_END:
case OP_RETURN:
break;
default:
fprintf(stderr, "print_compiled_byte_code: undefined code %d\n", opcode);
break;
}
}
#endif /* ONIG_DEBUG */
#ifdef ONIG_DEBUG_COMPILE
extern void
onig_print_compiled_byte_code_list(FILE* f, regex_t* reg)
{
Operation* bp;
Operation* start = reg->ops;
Operation* end = reg->ops + reg->ops_used;
fprintf(f, "bt_mem_start: 0x%x, bt_mem_end: 0x%x\n",
reg->bt_mem_start, reg->bt_mem_end);
fprintf(f, "code-length: %d\n", reg->ops_used);
bp = start;
while (bp < end) {
int pos = bp - start;
fprintf(f, "%4d: ", pos);
print_compiled_byte_code(f, reg, pos, start, reg->enc);
fprintf(f, "\n");
bp++;
}
fprintf(f, "\n");
}
#endif
#ifdef USE_CAPTURE_HISTORY
static void history_tree_free(OnigCaptureTreeNode* node);
static void
history_tree_clear(OnigCaptureTreeNode* node)
{
int i;
if (IS_NULL(node)) return ;
for (i = 0; i < node->num_childs; i++) {
if (IS_NOT_NULL(node->childs[i])) {
history_tree_free(node->childs[i]);
}
}
for (i = 0; i < node->allocated; i++) {
node->childs[i] = (OnigCaptureTreeNode* )0;
}
node->num_childs = 0;
node->beg = ONIG_REGION_NOTPOS;
node->end = ONIG_REGION_NOTPOS;
node->group = -1;
}
static void
history_tree_free(OnigCaptureTreeNode* node)
{
history_tree_clear(node);
if (IS_NOT_NULL(node->childs)) xfree(node->childs);
xfree(node);
}
static void
history_root_free(OnigRegion* r)
{
if (IS_NULL(r->history_root)) return ;
history_tree_free(r->history_root);
r->history_root = (OnigCaptureTreeNode* )0;
}
static OnigCaptureTreeNode*
history_node_new(void)
{
OnigCaptureTreeNode* node;
node = (OnigCaptureTreeNode* )xmalloc(sizeof(OnigCaptureTreeNode));
CHECK_NULL_RETURN(node);
node->childs = (OnigCaptureTreeNode** )0;
node->allocated = 0;
node->num_childs = 0;
node->group = -1;
node->beg = ONIG_REGION_NOTPOS;
node->end = ONIG_REGION_NOTPOS;
return node;
}
static int
history_tree_add_child(OnigCaptureTreeNode* parent, OnigCaptureTreeNode* child)
{
#define HISTORY_TREE_INIT_ALLOC_SIZE 8
if (parent->num_childs >= parent->allocated) {
int n, i;
if (IS_NULL(parent->childs)) {
n = HISTORY_TREE_INIT_ALLOC_SIZE;
parent->childs =
(OnigCaptureTreeNode** )xmalloc(sizeof(parent->childs[0]) * n);
}
else {
n = parent->allocated * 2;
parent->childs =
(OnigCaptureTreeNode** )xrealloc(parent->childs,
sizeof(parent->childs[0]) * n);
}
CHECK_NULL_RETURN_MEMERR(parent->childs);
for (i = parent->allocated; i < n; i++) {
parent->childs[i] = (OnigCaptureTreeNode* )0;
}
parent->allocated = n;
}
parent->childs[parent->num_childs] = child;
parent->num_childs++;
return 0;
}
static OnigCaptureTreeNode*
history_tree_clone(OnigCaptureTreeNode* node)
{
int i;
OnigCaptureTreeNode *clone, *child;
clone = history_node_new();
CHECK_NULL_RETURN(clone);
clone->beg = node->beg;
clone->end = node->end;
for (i = 0; i < node->num_childs; i++) {
child = history_tree_clone(node->childs[i]);
if (IS_NULL(child)) {
history_tree_free(clone);
return (OnigCaptureTreeNode* )0;
}
history_tree_add_child(clone, child);
}
return clone;
}
extern OnigCaptureTreeNode*
onig_get_capture_tree(OnigRegion* region)
{
return region->history_root;
}
#endif /* USE_CAPTURE_HISTORY */
extern void
onig_region_clear(OnigRegion* region)
{
int i;
for (i = 0; i < region->num_regs; i++) {
region->beg[i] = region->end[i] = ONIG_REGION_NOTPOS;
}
#ifdef USE_CAPTURE_HISTORY
history_root_free(region);
#endif
}
extern int
onig_region_resize(OnigRegion* region, int n)
{
region->num_regs = n;
if (n < ONIG_NREGION)
n = ONIG_NREGION;
if (region->allocated == 0) {
region->beg = (int* )xmalloc(n * sizeof(int));
region->end = (int* )xmalloc(n * sizeof(int));
if (region->beg == 0 || region->end == 0)
return ONIGERR_MEMORY;
region->allocated = n;
}
else if (region->allocated < n) {
region->beg = (int* )xrealloc(region->beg, n * sizeof(int));
region->end = (int* )xrealloc(region->end, n * sizeof(int));
if (region->beg == 0 || region->end == 0)
return ONIGERR_MEMORY;
region->allocated = n;
}
return 0;
}
static int
onig_region_resize_clear(OnigRegion* region, int n)
{
int r;
r = onig_region_resize(region, n);
if (r != 0) return r;
onig_region_clear(region);
return 0;
}
extern int
onig_region_set(OnigRegion* region, int at, int beg, int end)
{
if (at < 0) return ONIGERR_INVALID_ARGUMENT;
if (at >= region->allocated) {
int r = onig_region_resize(region, at + 1);
if (r < 0) return r;
}
region->beg[at] = beg;
region->end[at] = end;
return 0;
}
extern void
onig_region_init(OnigRegion* region)
{
region->num_regs = 0;
region->allocated = 0;
region->beg = (int* )0;
region->end = (int* )0;
region->history_root = (OnigCaptureTreeNode* )0;
}
extern OnigRegion*
onig_region_new(void)
{
OnigRegion* r;
r = (OnigRegion* )xmalloc(sizeof(OnigRegion));
CHECK_NULL_RETURN(r);
onig_region_init(r);
return r;
}
extern void
onig_region_free(OnigRegion* r, int free_self)
{
if (r != 0) {
if (r->allocated > 0) {
if (r->beg) xfree(r->beg);
if (r->end) xfree(r->end);
r->allocated = 0;
}
#ifdef USE_CAPTURE_HISTORY
history_root_free(r);
#endif
if (free_self) xfree(r);
}
}
extern void
onig_region_copy(OnigRegion* to, OnigRegion* from)
{
#define RREGC_SIZE (sizeof(int) * from->num_regs)
int i;
if (to == from) return;
if (to->allocated == 0) {
if (from->num_regs > 0) {
to->beg = (int* )xmalloc(RREGC_SIZE);
if (IS_NULL(to->beg)) return;
to->end = (int* )xmalloc(RREGC_SIZE);
if (IS_NULL(to->end)) return;
to->allocated = from->num_regs;
}
}
else if (to->allocated < from->num_regs) {
to->beg = (int* )xrealloc(to->beg, RREGC_SIZE);
if (IS_NULL(to->beg)) return;
to->end = (int* )xrealloc(to->end, RREGC_SIZE);
if (IS_NULL(to->end)) return;
to->allocated = from->num_regs;
}
for (i = 0; i < from->num_regs; i++) {
to->beg[i] = from->beg[i];
to->end[i] = from->end[i];
}
to->num_regs = from->num_regs;
#ifdef USE_CAPTURE_HISTORY
history_root_free(to);
if (IS_NOT_NULL(from->history_root)) {
to->history_root = history_tree_clone(from->history_root);
}
#endif
}
#ifdef USE_CALLOUT
#define CALLOUT_BODY(func, ain, aname_id, anum, user, args, result) do { \
args.in = (ain);\
args.name_id = (aname_id);\
args.num = anum;\
args.regex = reg;\
args.string = str;\
args.string_end = end;\
args.start = sstart;\
args.right_range = right_range;\
args.current = s;\
args.retry_in_match_counter = retry_in_match_counter;\
args.msa = msa;\
args.stk_base = stk_base;\
args.stk = stk;\
args.mem_start_stk = mem_start_stk;\
args.mem_end_stk = mem_end_stk;\
result = (func)(&args, user);\
} while (0)
#define RETRACTION_CALLOUT(func, aname_id, anum, user) do {\
int result;\
OnigCalloutArgs args;\
CALLOUT_BODY(func, ONIG_CALLOUT_IN_RETRACTION, aname_id, anum, user, args, result);\
switch (result) {\
case ONIG_CALLOUT_FAIL:\
case ONIG_CALLOUT_SUCCESS:\
break;\
default:\
if (result > 0) {\
result = ONIGERR_INVALID_ARGUMENT;\
}\
best_len = result;\
goto finish;\
break;\
}\
} while(0)
#endif
/** stack **/
#define INVALID_STACK_INDEX -1
#define STK_ALT_FLAG 0x0001
/* stack type */
/* used by normal-POP */
#define STK_SUPER_ALT STK_ALT_FLAG
#define STK_ALT (0x0002 | STK_ALT_FLAG)
#define STK_ALT_PREC_READ_NOT (0x0004 | STK_ALT_FLAG)
#define STK_ALT_LOOK_BEHIND_NOT (0x0006 | STK_ALT_FLAG)
/* handled by normal-POP */
#define STK_MEM_START 0x0010
#define STK_MEM_END 0x8030
#define STK_REPEAT_INC 0x0050
#ifdef USE_CALLOUT
#define STK_CALLOUT 0x0070
#endif
/* avoided by normal-POP */
#define STK_VOID 0x0000 /* for fill a blank */
#define STK_EMPTY_CHECK_START 0x3000
#define STK_EMPTY_CHECK_END 0x5000 /* for recursive call */
#define STK_MEM_END_MARK 0x8100
#define STK_TO_VOID_START 0x1200 /* mark for "(?>...)" */
#define STK_REPEAT 0x0300
#define STK_CALL_FRAME 0x0400
#define STK_RETURN 0x0500
#define STK_SAVE_VAL 0x0600
#define STK_PREC_READ_START 0x0700
#define STK_PREC_READ_END 0x0800
/* stack type check mask */
#define STK_MASK_POP_USED STK_ALT_FLAG
#define STK_MASK_POP_HANDLED 0x0010
#define STK_MASK_POP_HANDLED_TIL (STK_MASK_POP_HANDLED | 0x0004)
#define STK_MASK_TO_VOID_TARGET 0x100e
#define STK_MASK_MEM_END_OR_MARK 0x8000 /* MEM_END or MEM_END_MARK */
typedef intptr_t StackIndex;
typedef struct _StackType {
unsigned int type;
int zid;
union {
struct {
Operation* pcode; /* byte code position */