diff options
Diffstat (limited to 'src/regexec.c')
| -rw-r--r-- | src/regexec.c | 3749 |
1 files changed, 3749 insertions, 0 deletions
diff --git a/src/regexec.c b/src/regexec.c new file mode 100644 index 0000000..2c768e1 --- /dev/null +++ b/src/regexec.c @@ -0,0 +1,3749 @@ +/********************************************************************** + regexec.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2002-2008 K.Kosako <sndgk393 AT ybb DOT ne DOT jp> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "regint.h" + +#define USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE + +#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 + +#ifdef USE_CAPTURE_HISTORY +static void history_tree_free(OnigCaptureTreeNode* node); + +static void +history_tree_clear(OnigCaptureTreeNode* node) +{ + int i; + + if (IS_NOT_NULL(node)) { + 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); + xfree(node); +} + +static void +history_root_free(OnigRegion* r) +{ + if (IS_NOT_NULL(r->history_root)) { + 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(OnigCaptureTreeNode*) * n); + } + else { + n = parent->allocated * 2; + parent->childs = + (OnigCaptureTreeNode** )xrealloc(parent->childs, + sizeof(OnigCaptureTreeNode*) * 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)); + onig_region_init(r); + return r; +} + +extern void +onig_region_free(OnigRegion* r, int free_self) +{ + if (r) { + 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); + to->end = (int* )xmalloc(RREGC_SIZE); + to->allocated = from->num_regs; + } + } + else if (to->allocated < from->num_regs) { + to->beg = (int* )xrealloc(to->beg, RREGC_SIZE); + to->end = (int* )xrealloc(to->end, RREGC_SIZE); + 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 +} + + +/** stack **/ +#define INVALID_STACK_INDEX -1 + +/* stack type */ +/* used by normal-POP */ +#define STK_ALT 0x0001 +#define STK_LOOK_BEHIND_NOT 0x0002 +#define STK_POS_NOT 0x0003 +/* handled by normal-POP */ +#define STK_MEM_START 0x0100 +#define STK_MEM_END 0x8200 +#define STK_REPEAT_INC 0x0300 +#define STK_STATE_CHECK_MARK 0x1000 +/* avoided by normal-POP */ +#define STK_NULL_CHECK_START 0x3000 +#define STK_NULL_CHECK_END 0x5000 /* for recursive call */ +#define STK_MEM_END_MARK 0x8400 +#define STK_POS 0x0500 /* used when POP-POS */ +#define STK_STOP_BT 0x0600 /* mark for "(?>...)" */ +#define STK_REPEAT 0x0700 +#define STK_CALL_FRAME 0x0800 +#define STK_RETURN 0x0900 +#define STK_VOID 0x0a00 /* for fill a blank */ + +/* stack type check mask */ +#define STK_MASK_POP_USED 0x00ff +#define STK_MASK_TO_VOID_TARGET 0x10ff +#define STK_MASK_MEM_END_OR_MARK 0x8000 /* MEM_END or MEM_END_MARK */ + +#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE +#define MATCH_ARG_INIT(msa, arg_option, arg_region, arg_start) do {\ + (msa).stack_p = (void* )0;\ + (msa).options = (arg_option);\ + (msa).region = (arg_region);\ + (msa).start = (arg_start);\ + (msa).best_len = ONIG_MISMATCH;\ +} while(0) +#else +#define MATCH_ARG_INIT(msa, arg_option, arg_region, arg_start) do {\ + (msa).stack_p = (void* )0;\ + (msa).options = (arg_option);\ + (msa).region = (arg_region);\ + (msa).start = (arg_start);\ +} while(0) +#endif + +#ifdef USE_COMBINATION_EXPLOSION_CHECK + +#define STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE 16 + +#define STATE_CHECK_BUFF_INIT(msa, str_len, offset, state_num) do { \ + if ((state_num) > 0 && str_len >= STATE_CHECK_STRING_THRESHOLD_LEN) {\ + unsigned int size = (unsigned int )(((str_len) + 1) * (state_num) + 7) >> 3;\ + offset = ((offset) * (state_num)) >> 3;\ + if (size > 0 && offset < size && size < STATE_CHECK_BUFF_MAX_SIZE) {\ + if (size >= STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE) \ + (msa).state_check_buff = (void* )xmalloc(size);\ + else \ + (msa).state_check_buff = (void* )xalloca(size);\ + xmemset(((char* )((msa).state_check_buff)+(offset)), 0, \ + (size_t )(size - (offset))); \ + (msa).state_check_buff_size = size;\ + }\ + else {\ + (msa).state_check_buff = (void* )0;\ + (msa).state_check_buff_size = 0;\ + }\ + }\ + else {\ + (msa).state_check_buff = (void* )0;\ + (msa).state_check_buff_size = 0;\ + }\ + } while(0) + +#define MATCH_ARG_FREE(msa) do {\ + if ((msa).stack_p) xfree((msa).stack_p);\ + if ((msa).state_check_buff_size >= STATE_CHECK_BUFF_MALLOC_THRESHOLD_SIZE) { \ + if ((msa).state_check_buff) xfree((msa).state_check_buff);\ + }\ +} while(0) +#else +#define STATE_CHECK_BUFF_INIT(msa, str_len, offset, state_num) +#define MATCH_ARG_FREE(msa) if ((msa).stack_p) xfree((msa).stack_p) +#endif + + + +#define STACK_INIT(alloc_addr, ptr_num, stack_num) do {\ + if (msa->stack_p) {\ + alloc_addr = (char* )xalloca(sizeof(char*) * (ptr_num));\ + stk_alloc = (OnigStackType* )(msa->stack_p);\ + stk_base = stk_alloc;\ + stk = stk_base;\ + stk_end = stk_base + msa->stack_n;\ + }\ + else {\ + alloc_addr = (char* )xalloca(sizeof(char*) * (ptr_num)\ + + sizeof(OnigStackType) * (stack_num));\ + stk_alloc = (OnigStackType* )(alloc_addr + sizeof(char*) * (ptr_num));\ + stk_base = stk_alloc;\ + stk = stk_base;\ + stk_end = stk_base + (stack_num);\ + }\ +} while(0) + +#define STACK_SAVE do{\ + if (stk_base != stk_alloc) {\ + msa->stack_p = stk_base;\ + msa->stack_n = stk_end - stk_base;\ + };\ +} while(0) + +static unsigned int MatchStackLimitSize = DEFAULT_MATCH_STACK_LIMIT_SIZE; + +extern unsigned int +onig_get_match_stack_limit_size(void) +{ + return MatchStackLimitSize; +} + +extern int +onig_set_match_stack_limit_size(unsigned int size) +{ + MatchStackLimitSize = size; + return 0; +} + +static int +stack_double(OnigStackType** arg_stk_base, OnigStackType** arg_stk_end, + OnigStackType** arg_stk, OnigStackType* stk_alloc, OnigMatchArg* msa) +{ + unsigned int n; + OnigStackType *x, *stk_base, *stk_end, *stk; + + stk_base = *arg_stk_base; + stk_end = *arg_stk_end; + stk = *arg_stk; + + n = stk_end - stk_base; + if (stk_base == stk_alloc && IS_NULL(msa->stack_p)) { + x = (OnigStackType* )xmalloc(sizeof(OnigStackType) * n * 2); + if (IS_NULL(x)) { + STACK_SAVE; + return ONIGERR_MEMORY; + } + xmemcpy(x, stk_base, n * sizeof(OnigStackType)); + n *= 2; + } + else { + n *= 2; + if (MatchStackLimitSize != 0 && n > MatchStackLimitSize) { + if ((unsigned int )(stk_end - stk_base) == MatchStackLimitSize) + return ONIGERR_MATCH_STACK_LIMIT_OVER; + else + n = MatchStackLimitSize; + } + x = (OnigStackType* )xrealloc(stk_base, sizeof(OnigStackType) * n); + if (IS_NULL(x)) { + STACK_SAVE; + return ONIGERR_MEMORY; + } + } + *arg_stk = x + (stk - stk_base); + *arg_stk_base = x; + *arg_stk_end = x + n; + return 0; +} + +#define STACK_ENSURE(n) do {\ + if (stk_end - stk < (n)) {\ + int r = stack_double(&stk_base, &stk_end, &stk, stk_alloc, msa);\ + if (r != 0) { STACK_SAVE; return r; } \ + }\ +} while(0) + +#define STACK_AT(index) (stk_base + (index)) +#define GET_STACK_INDEX(stk) ((stk) - stk_base) + +#define STACK_PUSH_TYPE(stack_type) do {\ + STACK_ENSURE(1);\ + stk->type = (stack_type);\ + STACK_INC;\ +} while(0) + +#define IS_TO_VOID_TARGET(stk) (((stk)->type & STK_MASK_TO_VOID_TARGET) != 0) + +#ifdef USE_COMBINATION_EXPLOSION_CHECK +#define STATE_CHECK_POS(s,snum) \ + (((s) - str) * num_comb_exp_check + ((snum) - 1)) +#define STATE_CHECK_VAL(v,snum) do {\ + if (state_check_buff != NULL) {\ + int x = STATE_CHECK_POS(s,snum);\ + (v) = state_check_buff[x/8] & (1<<(x%8));\ + }\ + else (v) = 0;\ +} while(0) + + +#define ELSE_IF_STATE_CHECK_MARK(stk) \ + else if ((stk)->type == STK_STATE_CHECK_MARK) { \ + int x = STATE_CHECK_POS(stk->u.state.pstr, stk->u.state.state_check);\ + state_check_buff[x/8] |= (1<<(x%8)); \ + } + +#define STACK_PUSH(stack_type,pat,s,sprev) do {\ + STACK_ENSURE(1);\ + stk->type = (stack_type);\ + stk->u.state.pcode = (pat);\ + stk->u.state.pstr = (s);\ + stk->u.state.pstr_prev = (sprev);\ + stk->u.state.state_check = 0;\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_ENSURED(stack_type,pat) do {\ + stk->type = (stack_type);\ + stk->u.state.pcode = (pat);\ + stk->u.state.state_check = 0;\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_ALT_WITH_STATE_CHECK(pat,s,sprev,snum) do {\ + STACK_ENSURE(1);\ + stk->type = STK_ALT;\ + stk->u.state.pcode = (pat);\ + stk->u.state.pstr = (s);\ + stk->u.state.pstr_prev = (sprev);\ + stk->u.state.state_check = ((state_check_buff != NULL) ? (snum) : 0);\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_STATE_CHECK(s,snum) do {\ + if (state_check_buff != NULL) {\ + STACK_ENSURE(1);\ + stk->type = STK_STATE_CHECK_MARK;\ + stk->u.state.pstr = (s);\ + stk->u.state.state_check = (snum);\ + STACK_INC;\ + }\ +} while(0) + +#else /* USE_COMBINATION_EXPLOSION_CHECK */ + +#define ELSE_IF_STATE_CHECK_MARK(stk) + +#define STACK_PUSH(stack_type,pat,s,sprev) do {\ + STACK_ENSURE(1);\ + stk->type = (stack_type);\ + stk->u.state.pcode = (pat);\ + stk->u.state.pstr = (s);\ + stk->u.state.pstr_prev = (sprev);\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_ENSURED(stack_type,pat) do {\ + stk->type = (stack_type);\ + stk->u.state.pcode = (pat);\ + STACK_INC;\ +} while(0) +#endif /* USE_COMBINATION_EXPLOSION_CHECK */ + +#define STACK_PUSH_ALT(pat,s,sprev) STACK_PUSH(STK_ALT,pat,s,sprev) +#define STACK_PUSH_POS(s,sprev) STACK_PUSH(STK_POS,NULL_UCHARP,s,sprev) +#define STACK_PUSH_POS_NOT(pat,s,sprev) STACK_PUSH(STK_POS_NOT,pat,s,sprev) +#define STACK_PUSH_STOP_BT STACK_PUSH_TYPE(STK_STOP_BT) +#define STACK_PUSH_LOOK_BEHIND_NOT(pat,s,sprev) \ + STACK_PUSH(STK_LOOK_BEHIND_NOT,pat,s,sprev) + +#define STACK_PUSH_REPEAT(id, pat) do {\ + STACK_ENSURE(1);\ + stk->type = STK_REPEAT;\ + stk->u.repeat.num = (id);\ + stk->u.repeat.pcode = (pat);\ + stk->u.repeat.count = 0;\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_REPEAT_INC(sindex) do {\ + STACK_ENSURE(1);\ + stk->type = STK_REPEAT_INC;\ + stk->u.repeat_inc.si = (sindex);\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_MEM_START(mnum, s) do {\ + STACK_ENSURE(1);\ + stk->type = STK_MEM_START;\ + stk->u.mem.num = (mnum);\ + stk->u.mem.pstr = (s);\ + stk->u.mem.start = mem_start_stk[mnum];\ + stk->u.mem.end = mem_end_stk[mnum];\ + mem_start_stk[mnum] = GET_STACK_INDEX(stk);\ + mem_end_stk[mnum] = INVALID_STACK_INDEX;\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_MEM_END(mnum, s) do {\ + STACK_ENSURE(1);\ + stk->type = STK_MEM_END;\ + stk->u.mem.num = (mnum);\ + stk->u.mem.pstr = (s);\ + stk->u.mem.start = mem_start_stk[mnum];\ + stk->u.mem.end = mem_end_stk[mnum];\ + mem_end_stk[mnum] = GET_STACK_INDEX(stk);\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_MEM_END_MARK(mnum) do {\ + STACK_ENSURE(1);\ + stk->type = STK_MEM_END_MARK;\ + stk->u.mem.num = (mnum);\ + STACK_INC;\ +} while(0) + +#define STACK_GET_MEM_START(mnum, k) do {\ + int level = 0;\ + k = stk;\ + while (k > stk_base) {\ + k--;\ + if ((k->type & STK_MASK_MEM_END_OR_MARK) != 0 \ + && k->u.mem.num == (mnum)) {\ + level++;\ + }\ + else if (k->type == STK_MEM_START && k->u.mem.num == (mnum)) {\ + if (level == 0) break;\ + level--;\ + }\ + }\ +} while(0) + +#define STACK_GET_MEM_RANGE(k, mnum, start, end) do {\ + int level = 0;\ + while (k < stk) {\ + if (k->type == STK_MEM_START && k->u.mem.num == (mnum)) {\ + if (level == 0) (start) = k->u.mem.pstr;\ + level++;\ + }\ + else if (k->type == STK_MEM_END && k->u.mem.num == (mnum)) {\ + level--;\ + if (level == 0) {\ + (end) = k->u.mem.pstr;\ + break;\ + }\ + }\ + k++;\ + }\ +} while(0) + +#define STACK_PUSH_NULL_CHECK_START(cnum, s) do {\ + STACK_ENSURE(1);\ + stk->type = STK_NULL_CHECK_START;\ + stk->u.null_check.num = (cnum);\ + stk->u.null_check.pstr = (s);\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_NULL_CHECK_END(cnum) do {\ + STACK_ENSURE(1);\ + stk->type = STK_NULL_CHECK_END;\ + stk->u.null_check.num = (cnum);\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_CALL_FRAME(pat) do {\ + STACK_ENSURE(1);\ + stk->type = STK_CALL_FRAME;\ + stk->u.call_frame.ret_addr = (pat);\ + STACK_INC;\ +} while(0) + +#define STACK_PUSH_RETURN do {\ + STACK_ENSURE(1);\ + stk->type = STK_RETURN;\ + STACK_INC;\ +} while(0) + + +#ifdef ONIG_DEBUG +#define STACK_BASE_CHECK(p, at) \ + if ((p) < stk_base) {\ + fprintf(stderr, "at %s\n", at);\ + goto stack_error;\ + } +#else +#define STACK_BASE_CHECK(p, at) +#endif + +#define STACK_POP_ONE do {\ + stk--;\ + STACK_BASE_CHECK(stk, "STACK_POP_ONE"); \ +} while(0) + +#define STACK_POP do {\ + switch (pop_level) {\ + case STACK_POP_LEVEL_FREE:\ + while (1) {\ + stk--;\ + STACK_BASE_CHECK(stk, "STACK_POP"); \ + if ((stk->type & STK_MASK_POP_USED) != 0) break;\ + ELSE_IF_STATE_CHECK_MARK(stk);\ + }\ + break;\ + case STACK_POP_LEVEL_MEM_START:\ + while (1) {\ + stk--;\ + STACK_BASE_CHECK(stk, "STACK_POP 2"); \ + if ((stk->type & STK_MASK_POP_USED) != 0) break;\ + else if (stk->type == STK_MEM_START) {\ + mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\ + mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\ + }\ + ELSE_IF_STATE_CHECK_MARK(stk);\ + }\ + break;\ + default:\ + while (1) {\ + stk--;\ + STACK_BASE_CHECK(stk, "STACK_POP 3"); \ + if ((stk->type & STK_MASK_POP_USED) != 0) break;\ + else if (stk->type == STK_MEM_START) {\ + mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\ + mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\ + }\ + else if (stk->type == STK_REPEAT_INC) {\ + STACK_AT(stk->u.repeat_inc.si)->u.repeat.count--;\ + }\ + else if (stk->type == STK_MEM_END) {\ + mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\ + mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\ + }\ + ELSE_IF_STATE_CHECK_MARK(stk);\ + }\ + break;\ + }\ +} while(0) + +#define STACK_POP_TIL_POS_NOT do {\ + while (1) {\ + stk--;\ + STACK_BASE_CHECK(stk, "STACK_POP_TIL_POS_NOT"); \ + if (stk->type == STK_POS_NOT) break;\ + else if (stk->type == STK_MEM_START) {\ + mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\ + mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\ + }\ + else if (stk->type == STK_REPEAT_INC) {\ + STACK_AT(stk->u.repeat_inc.si)->u.repeat.count--;\ + }\ + else if (stk->type == STK_MEM_END) {\ + mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\ + mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\ + }\ + ELSE_IF_STATE_CHECK_MARK(stk);\ + }\ +} while(0) + +#define STACK_POP_TIL_LOOK_BEHIND_NOT do {\ + while (1) {\ + stk--;\ + STACK_BASE_CHECK(stk, "STACK_POP_TIL_LOOK_BEHIND_NOT"); \ + if (stk->type == STK_LOOK_BEHIND_NOT) break;\ + else if (stk->type == STK_MEM_START) {\ + mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\ + mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\ + }\ + else if (stk->type == STK_REPEAT_INC) {\ + STACK_AT(stk->u.repeat_inc.si)->u.repeat.count--;\ + }\ + else if (stk->type == STK_MEM_END) {\ + mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\ + mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\ + }\ + ELSE_IF_STATE_CHECK_MARK(stk);\ + }\ +} while(0) + +#define STACK_POS_END(k) do {\ + k = stk;\ + while (1) {\ + k--;\ + STACK_BASE_CHECK(k, "STACK_POS_END"); \ + if (IS_TO_VOID_TARGET(k)) {\ + k->type = STK_VOID;\ + }\ + else if (k->type == STK_POS) {\ + k->type = STK_VOID;\ + break;\ + }\ + }\ +} while(0) + +#define STACK_STOP_BT_END do {\ + OnigStackType *k = stk;\ + while (1) {\ + k--;\ + STACK_BASE_CHECK(k, "STACK_STOP_BT_END"); \ + if (IS_TO_VOID_TARGET(k)) {\ + k->type = STK_VOID;\ + }\ + else if (k->type == STK_STOP_BT) {\ + k->type = STK_VOID;\ + break;\ + }\ + }\ +} while(0) + +#define STACK_NULL_CHECK(isnull,id,s) do {\ + OnigStackType* k = stk;\ + while (1) {\ + k--;\ + STACK_BASE_CHECK(k, "STACK_NULL_CHECK"); \ + if (k->type == STK_NULL_CHECK_START) {\ + if (k->u.null_check.num == (id)) {\ + (isnull) = (k->u.null_check.pstr == (s));\ + break;\ + }\ + }\ + }\ +} while(0) + +#define STACK_NULL_CHECK_REC(isnull,id,s) do {\ + int level = 0;\ + OnigStackType* k = stk;\ + while (1) {\ + k--;\ + STACK_BASE_CHECK(k, "STACK_NULL_CHECK_REC"); \ + if (k->type == STK_NULL_CHECK_START) {\ + if (k->u.null_check.num == (id)) {\ + if (level == 0) {\ + (isnull) = (k->u.null_check.pstr == (s));\ + break;\ + }\ + else level--;\ + }\ + }\ + else if (k->type == STK_NULL_CHECK_END) {\ + level++;\ + }\ + }\ +} while(0) + +#define STACK_NULL_CHECK_MEMST(isnull,id,s,reg) do {\ + OnigStackType* k = stk;\ + while (1) {\ + k--;\ + STACK_BASE_CHECK(k, "STACK_NULL_CHECK_MEMST"); \ + if (k->type == STK_NULL_CHECK_START) {\ + if (k->u.null_check.num == (id)) {\ + if (k->u.null_check.pstr != (s)) {\ + (isnull) = 0;\ + break;\ + }\ + else {\ + UChar* endp;\ + (isnull) = 1;\ + while (k < stk) {\ + if (k->type == STK_MEM_START) {\ + if (k->u.mem.end == INVALID_STACK_INDEX) {\ + (isnull) = 0; break;\ + }\ + if (BIT_STATUS_AT(reg->bt_mem_end, k->u.mem.num))\ + endp = STACK_AT(k->u.mem.end)->u.mem.pstr;\ + else\ + endp = (UChar* )k->u.mem.end;\ + if (STACK_AT(k->u.mem.start)->u.mem.pstr != endp) {\ + (isnull) = 0; break;\ + }\ + else if (endp != s) {\ + (isnull) = -1; /* empty, but position changed */ \ + }\ + }\ + k++;\ + }\ + break;\ + }\ + }\ + }\ + }\ +} while(0) + +#define STACK_NULL_CHECK_MEMST_REC(isnull,id,s,reg) do {\ + int level = 0;\ + OnigStackType* k = stk;\ + while (1) {\ + k--;\ + STACK_BASE_CHECK(k, "STACK_NULL_CHECK_MEMST_REC"); \ + if (k->type == STK_NULL_CHECK_START) {\ + if (k->u.null_check.num == (id)) {\ + if (level == 0) {\ + if (k->u.null_check.pstr != (s)) {\ + (isnull) = 0;\ + break;\ + }\ + else {\ + UChar* endp;\ + (isnull) = 1;\ + while (k < stk) {\ + if (k->type == STK_MEM_START) {\ + if (k->u.mem.end == INVALID_STACK_INDEX) {\ + (isnull) = 0; break;\ + }\ + if (BIT_STATUS_AT(reg->bt_mem_end, k->u.mem.num))\ + endp = STACK_AT(k->u.mem.end)->u.mem.pstr;\ + else\ + endp = (UChar* )k->u.mem.end;\ + if (STACK_AT(k->u.mem.start)->u.mem.pstr != endp) {\ + (isnull) = 0; break;\ + }\ + else if (endp != s) {\ + (isnull) = -1; /* empty, but position changed */ \ + }\ + }\ + k++;\ + }\ + break;\ + }\ + }\ + else {\ + level--;\ + }\ + }\ + }\ + else if (k->type == STK_NULL_CHECK_END) {\ + if (k->u.null_check.num == (id)) level++;\ + }\ + }\ +} while(0) + +#define STACK_GET_REPEAT(id, k) do {\ + int level = 0;\ + k = stk;\ + while (1) {\ + k--;\ + STACK_BASE_CHECK(k, "STACK_GET_REPEAT"); \ + if (k->type == STK_REPEAT) {\ + if (level == 0) {\ + if (k->u.repeat.num == (id)) {\ + break;\ + }\ + }\ + }\ + else if (k->type == STK_CALL_FRAME) level--;\ + else if (k->type == STK_RETURN) level++;\ + }\ +} while(0) + +#define STACK_RETURN(addr) do {\ + int level = 0;\ + OnigStackType* k = stk;\ + while (1) {\ + k--;\ + STACK_BASE_CHECK(k, "STACK_RETURN"); \ + if (k->type == STK_CALL_FRAME) {\ + if (level == 0) {\ + (addr) = k->u.call_frame.ret_addr;\ + break;\ + }\ + else level--;\ + }\ + else if (k->type == STK_RETURN)\ + level++;\ + }\ +} while(0) + + +#define STRING_CMP(s1,s2,len) do {\ + while (len-- > 0) {\ + if (*s1++ != *s2++) goto fail;\ + }\ +} while(0) + +#define STRING_CMP_IC(case_fold_flag,s1,ps2,len) do {\ + if (string_cmp_ic(encode, case_fold_flag, s1, ps2, len) == 0) \ + goto fail; \ +} while(0) + +static int string_cmp_ic(OnigEncoding enc, int case_fold_flag, + UChar* s1, UChar** ps2, int mblen) +{ + UChar buf1[ONIGENC_MBC_CASE_FOLD_MAXLEN]; + UChar buf2[ONIGENC_MBC_CASE_FOLD_MAXLEN]; + UChar *p1, *p2, *end1, *s2, *end2; + int len1, len2; + + s2 = *ps2; + end1 = s1 + mblen; + end2 = s2 + mblen; + while (s1 < end1) { + len1 = ONIGENC_MBC_CASE_FOLD(enc, case_fold_flag, &s1, end1, buf1); + len2 = ONIGENC_MBC_CASE_FOLD(enc, case_fold_flag, &s2, end2, buf2); + if (len1 != len2) return 0; + p1 = buf1; + p2 = buf2; + while (len1-- > 0) { + if (*p1 != *p2) return 0; + p1++; + p2++; + } + } + + *ps2 = s2; + return 1; +} + +#define STRING_CMP_VALUE(s1,s2,len,is_fail) do {\ + is_fail = 0;\ + while (len-- > 0) {\ + if (*s1++ != *s2++) {\ + is_fail = 1; break;\ + }\ + }\ +} while(0) + +#define STRING_CMP_VALUE_IC(case_fold_flag,s1,ps2,len,is_fail) do {\ + if (string_cmp_ic(encode, case_fold_flag, s1, ps2, len) == 0) \ + is_fail = 1; \ + else \ + is_fail = 0; \ +} while(0) + + +#define IS_EMPTY_STR (str == end) +#define ON_STR_BEGIN(s) ((s) == str) +#define ON_STR_END(s) ((s) == end) +#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE +#define DATA_ENSURE_CHECK1 (s < right_range) +#define DATA_ENSURE_CHECK(n) (s + (n) <= right_range) +#define DATA_ENSURE(n) if (s + (n) > right_range) goto fail +#else +#define DATA_ENSURE_CHECK1 (s < end) +#define DATA_ENSURE_CHECK(n) (s + (n) <= end) +#define DATA_ENSURE(n) if (s + (n) > end) goto fail +#endif /* USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE */ + + +#ifdef USE_CAPTURE_HISTORY +static int +make_capture_history_tree(OnigCaptureTreeNode* node, OnigStackType** kp, + OnigStackType* stk_top, UChar* str, regex_t* reg) +{ + int n, r; + OnigCaptureTreeNode* child; + OnigStackType* k = *kp; + + while (k < stk_top) { + if (k->type == STK_MEM_START) { + n = k->u.mem.num; + if (n <= ONIG_MAX_CAPTURE_HISTORY_GROUP && + BIT_STATUS_AT(reg->capture_history, n) != 0) { + child = history_node_new(); + CHECK_NULL_RETURN_MEMERR(child); + child->group = n; + child->beg = (int )(k->u.mem.pstr - str); + r = history_tree_add_child(node, child); + if (r != 0) return r; + *kp = (k + 1); + r = make_capture_history_tree(child, kp, stk_top, str, reg); + if (r != 0) return r; + + k = *kp; + child->end = (int )(k->u.mem.pstr - str); + } + } + else if (k->type == STK_MEM_END) { + if (k->u.mem.num == node->group) { + node->end = (int )(k->u.mem.pstr - str); + *kp = k; + return 0; + } + } + k++; + } + + return 1; /* 1: root node ending. */ +} +#endif + +#ifdef USE_BACKREF_WITH_LEVEL +static int mem_is_in_memp(int mem, int num, UChar* memp) +{ + int i; + MemNumType m; + + for (i = 0; i < num; i++) { + GET_MEMNUM_INC(m, memp); + if (mem == (int )m) return 1; + } + return 0; +} + +static int backref_match_at_nested_level(regex_t* reg + , OnigStackType* top, OnigStackType* stk_base + , int ignore_case, int case_fold_flag + , int nest, int mem_num, UChar* memp, UChar** s, const UChar* send) +{ + UChar *ss, *p, *pstart, *pend = NULL_UCHARP; + int level; + OnigStackType* k; + + level = 0; + k = top; + k--; + while (k >= stk_base) { + if (k->type == STK_CALL_FRAME) { + level--; + } + else if (k->type == STK_RETURN) { + level++; + } + else if (level == nest) { + if (k->type == STK_MEM_START) { + if (mem_is_in_memp(k->u.mem.num, mem_num, memp)) { + pstart = k->u.mem.pstr; + if (pend != NULL_UCHARP) { + if (pend - pstart > send - *s) return 0; /* or goto next_mem; */ + p = pstart; + ss = *s; + + if (ignore_case != 0) { + if (string_cmp_ic(reg->enc, case_fold_flag, + pstart, &ss, (int )(pend - pstart)) == 0) + return 0; /* or goto next_mem; */ + } + else { + while (p < pend) { + if (*p++ != *ss++) return 0; /* or goto next_mem; */ + } + } + + *s = ss; + return 1; + } + } + } + else if (k->type == STK_MEM_END) { + if (mem_is_in_memp(k->u.mem.num, mem_num, memp)) { + pend = k->u.mem.pstr; + } + } + } + k--; + } + + return 0; +} +#endif /* USE_BACKREF_WITH_LEVEL */ + + +#ifdef ONIG_DEBUG_STATISTICS + +#define USE_TIMEOFDAY + +#ifdef USE_TIMEOFDAY +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +static struct timeval ts, te; +#define GETTIME(t) gettimeofday(&(t), (struct timezone* )0) +#define TIMEDIFF(te,ts) (((te).tv_usec - (ts).tv_usec) + \ + (((te).tv_sec - (ts).tv_sec)*1000000)) +#else +#ifdef HAVE_SYS_TIMES_H +#include <sys/times.h> +#endif +static struct tms ts, te; +#define GETTIME(t) times(&(t)) +#define TIMEDIFF(te,ts) ((te).tms_utime - (ts).tms_utime) +#endif + +static int OpCounter[256]; +static int OpPrevCounter[256]; +static unsigned long OpTime[256]; +static int OpCurr = OP_FINISH; +static int OpPrevTarget = OP_FAIL; +static int MaxStackDepth = 0; + +#define MOP_IN(opcode) do {\ + if (opcode == OpPrevTarget) OpPrevCounter[OpCurr]++;\ + OpCurr = opcode;\ + OpCounter[opcode]++;\ + GETTIME(ts);\ +} while(0) + +#define MOP_OUT do {\ + GETTIME(te);\ + OpTime[OpCurr] += TIMEDIFF(te, ts);\ +} while(0) + +extern void +onig_statistics_init(void) +{ + int i; + for (i = 0; i < 256; i++) { + OpCounter[i] = OpPrevCounter[i] = 0; OpTime[i] = 0; + } + MaxStackDepth = 0; +} + +extern void +onig_print_statistics(FILE* f) +{ + int i; + fprintf(f, " count prev time\n"); + for (i = 0; OnigOpInfo[i].opcode >= 0; i++) { + fprintf(f, "%8d: %8d: %10ld: %s\n", + OpCounter[i], OpPrevCounter[i], OpTime[i], OnigOpInfo[i].name); + } + fprintf(f, "\nmax stack depth: %d\n", MaxStackDepth); +} + +#define STACK_INC do {\ + stk++;\ + if (stk - stk_base > MaxStackDepth) \ + MaxStackDepth = stk - stk_base;\ +} while(0) + +#else +#define STACK_INC stk++ + +#define MOP_IN(opcode) +#define MOP_OUT +#endif + + +/* matching region of POSIX API */ +typedef int regoff_t; + +typedef struct { + regoff_t rm_so; + regoff_t rm_eo; +} posix_regmatch_t; + +/* match data(str - end) from position (sstart). */ +/* if sstart == str then set sprev to NULL. */ +static int +match_at(regex_t* reg, const UChar* str, const UChar* end, +#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE + const UChar* right_range, +#endif + const UChar* sstart, UChar* sprev, OnigMatchArg* msa) +{ + static UChar FinishCode[] = { OP_FINISH }; + + int i, n, num_mem, best_len, pop_level; + LengthType tlen, tlen2; + MemNumType mem; + RelAddrType addr; + OnigOptionType option = reg->options; + OnigEncoding encode = reg->enc; + OnigCaseFoldType case_fold_flag = reg->case_fold_flag; + UChar *s, *q, *sbegin; + UChar *p = reg->p; + char *alloca_base; + OnigStackType *stk_alloc, *stk_base, *stk, *stk_end; + OnigStackType *stkp; /* used as any purpose. */ + OnigStackIndex si; + OnigStackIndex *repeat_stk; + OnigStackIndex *mem_start_stk, *mem_end_stk; +#ifdef USE_COMBINATION_EXPLOSION_CHECK + int scv; + unsigned char* state_check_buff = msa->state_check_buff; + int num_comb_exp_check = reg->num_comb_exp_check; +#endif + n = reg->num_repeat + reg->num_mem * 2; + + STACK_INIT(alloca_base, n, INIT_MATCH_STACK_SIZE); + pop_level = reg->stack_pop_level; + num_mem = reg->num_mem; + repeat_stk = (OnigStackIndex* )alloca_base; + + mem_start_stk = (OnigStackIndex* )(repeat_stk + reg->num_repeat); + mem_end_stk = mem_start_stk + num_mem; + mem_start_stk--; /* for index start from 1, + mem_start_stk[1]..mem_start_stk[num_mem] */ + mem_end_stk--; /* for index start from 1, + mem_end_stk[1]..mem_end_stk[num_mem] */ + for (i = 1; i <= num_mem; i++) { + mem_start_stk[i] = mem_end_stk[i] = INVALID_STACK_INDEX; + } + +#ifdef ONIG_DEBUG_MATCH + fprintf(stderr, "match_at: str: %d, end: %d, start: %d, sprev: %d\n", + (int )str, (int )end, (int )sstart, (int )sprev); + fprintf(stderr, "size: %d, start offset: %d\n", + (int )(end - str), (int )(sstart - str)); +#endif + + STACK_PUSH_ENSURED(STK_ALT, FinishCode); /* bottom stack */ + best_len = ONIG_MISMATCH; + s = (UChar* )sstart; + while (1) { +#ifdef ONIG_DEBUG_MATCH + { + UChar *q, *bp, buf[50]; + int len; + fprintf(stderr, "%4d> \"", (int )(s - str)); + bp = buf; + for (i = 0, q = s; i < 7 && q < end; i++) { + len = enclen(encode, q); + while (len-- > 0) *bp++ = *q++; + } + if (q < end) { xmemcpy(bp, "...\"", 4); bp += 4; } + else { xmemcpy(bp, "\"", 1); bp += 1; } + *bp = 0; + fputs((char* )buf, stderr); + for (i = 0; i < 20 - (bp - buf); i++) fputc(' ', stderr); + onig_print_compiled_byte_code(stderr, p, NULL, encode); + fprintf(stderr, "\n"); + } +#endif + + sbegin = s; + switch (*p++) { + case OP_END: MOP_IN(OP_END); + n = s - sstart; + if (n > best_len) { + OnigRegion* region; +#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE + if (IS_FIND_LONGEST(option)) { + if (n > msa->best_len) { + msa->best_len = n; + msa->best_s = (UChar* )sstart; + } + else + goto end_best_len; + } +#endif + best_len = n; + region = msa->region; + if (region) { +#ifdef USE_POSIX_API_REGION_OPTION + if (IS_POSIX_REGION(msa->options)) { + posix_regmatch_t* rmt = (posix_regmatch_t* )region; + + rmt[0].rm_so = sstart - str; + rmt[0].rm_eo = s - str; + for (i = 1; i <= num_mem; i++) { + if (mem_end_stk[i] != INVALID_STACK_INDEX) { + if (BIT_STATUS_AT(reg->bt_mem_start, i)) + rmt[i].rm_so = STACK_AT(mem_start_stk[i])->u.mem.pstr - str; + else + rmt[i].rm_so = (UChar* )((void* )(mem_start_stk[i])) - str; + + rmt[i].rm_eo = (BIT_STATUS_AT(reg->bt_mem_end, i) + ? STACK_AT(mem_end_stk[i])->u.mem.pstr + : (UChar* )((void* )mem_end_stk[i])) - str; + } + else { + rmt[i].rm_so = rmt[i].rm_eo = ONIG_REGION_NOTPOS; + } + } + } + else { +#endif /* USE_POSIX_API_REGION_OPTION */ + region->beg[0] = sstart - str; + region->end[0] = s - str; + for (i = 1; i <= num_mem; i++) { + if (mem_end_stk[i] != INVALID_STACK_INDEX) { + if (BIT_STATUS_AT(reg->bt_mem_start, i)) + region->beg[i] = STACK_AT(mem_start_stk[i])->u.mem.pstr - str; + else + region->beg[i] = (UChar* )((void* )mem_start_stk[i]) - str; + + region->end[i] = (BIT_STATUS_AT(reg->bt_mem_end, i) + ? STACK_AT(mem_end_stk[i])->u.mem.pstr + : (UChar* )((void* )mem_end_stk[i])) - str; + } + else { + region->beg[i] = region->end[i] = ONIG_REGION_NOTPOS; + } + } + +#ifdef USE_CAPTURE_HISTORY + if (reg->capture_history != 0) { + int r; + OnigCaptureTreeNode* node; + + if (IS_NULL(region->history_root)) { + region->history_root = node = history_node_new(); + CHECK_NULL_RETURN_MEMERR(node); + } + else { + node = region->history_root; + history_tree_clear(node); + } + + node->group = 0; + node->beg = sstart - str; + node->end = s - str; + + stkp = stk_base; + r = make_capture_history_tree(region->history_root, &stkp, + stk, (UChar* )str, reg); + if (r < 0) { + best_len = r; /* error code */ + goto finish; + } + } +#endif /* USE_CAPTURE_HISTORY */ +#ifdef USE_POSIX_API_REGION_OPTION + } /* else IS_POSIX_REGION() */ +#endif + } /* if (region) */ + } /* n > best_len */ + +#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE + end_best_len: +#endif + MOP_OUT; + + if (IS_FIND_CONDITION(option)) { + if (IS_FIND_NOT_EMPTY(option) && s == sstart) { + best_len = ONIG_MISMATCH; + goto fail; /* for retry */ + } + if (IS_FIND_LONGEST(option) && DATA_ENSURE_CHECK1) { + goto fail; /* for retry */ + } + } + + /* default behavior: return first-matching result. */ + goto finish; + break; + + case OP_EXACT1: MOP_IN(OP_EXACT1); +#if 0 + DATA_ENSURE(1); + if (*p != *s) goto fail; + p++; s++; +#endif + if (*p != *s++) goto fail; + DATA_ENSURE(0); + p++; + MOP_OUT; + break; + + case OP_EXACT1_IC: MOP_IN(OP_EXACT1_IC); + { + int len; + UChar *q, lowbuf[ONIGENC_MBC_CASE_FOLD_MAXLEN]; + + DATA_ENSURE(1); + len = ONIGENC_MBC_CASE_FOLD(encode, + /* DISABLE_CASE_FOLD_MULTI_CHAR(case_fold_flag), */ + case_fold_flag, + &s, end, lowbuf); + DATA_ENSURE(0); + q = lowbuf; + while (len-- > 0) { + if (*p != *q) { + goto fail; + } + p++; q++; + } + } + MOP_OUT; + break; + + case OP_EXACT2: MOP_IN(OP_EXACT2); + DATA_ENSURE(2); + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + sprev = s; + p++; s++; + MOP_OUT; + continue; + break; + + case OP_EXACT3: MOP_IN(OP_EXACT3); + DATA_ENSURE(3); + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + sprev = s; + p++; s++; + MOP_OUT; + continue; + break; + + case OP_EXACT4: MOP_IN(OP_EXACT4); + DATA_ENSURE(4); + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + sprev = s; + p++; s++; + MOP_OUT; + continue; + break; + + case OP_EXACT5: MOP_IN(OP_EXACT5); + DATA_ENSURE(5); + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + sprev = s; + p++; s++; + MOP_OUT; + continue; + break; + + case OP_EXACTN: MOP_IN(OP_EXACTN); + GET_LENGTH_INC(tlen, p); + DATA_ENSURE(tlen); + while (tlen-- > 0) { + if (*p++ != *s++) goto fail; + } + sprev = s - 1; + MOP_OUT; + continue; + break; + + case OP_EXACTN_IC: MOP_IN(OP_EXACTN_IC); + { + int len; + UChar *q, *endp, lowbuf[ONIGENC_MBC_CASE_FOLD_MAXLEN]; + + GET_LENGTH_INC(tlen, p); + endp = p + tlen; + + while (p < endp) { + sprev = s; + DATA_ENSURE(1); + len = ONIGENC_MBC_CASE_FOLD(encode, + /* DISABLE_CASE_FOLD_MULTI_CHAR(case_fold_flag), */ + case_fold_flag, + &s, end, lowbuf); + DATA_ENSURE(0); + q = lowbuf; + while (len-- > 0) { + if (*p != *q) goto fail; + p++; q++; + } + } + } + + MOP_OUT; + continue; + break; + + case OP_EXACTMB2N1: MOP_IN(OP_EXACTMB2N1); + DATA_ENSURE(2); + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + MOP_OUT; + break; + + case OP_EXACTMB2N2: MOP_IN(OP_EXACTMB2N2); + DATA_ENSURE(4); + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + sprev = s; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + MOP_OUT; + continue; + break; + + case OP_EXACTMB2N3: MOP_IN(OP_EXACTMB2N3); + DATA_ENSURE(6); + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + sprev = s; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + MOP_OUT; + continue; + break; + + case OP_EXACTMB2N: MOP_IN(OP_EXACTMB2N); + GET_LENGTH_INC(tlen, p); + DATA_ENSURE(tlen * 2); + while (tlen-- > 0) { + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + } + sprev = s - 2; + MOP_OUT; + continue; + break; + + case OP_EXACTMB3N: MOP_IN(OP_EXACTMB3N); + GET_LENGTH_INC(tlen, p); + DATA_ENSURE(tlen * 3); + while (tlen-- > 0) { + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + if (*p != *s) goto fail; + p++; s++; + } + sprev = s - 3; + MOP_OUT; + continue; + break; + + case OP_EXACTMBN: MOP_IN(OP_EXACTMBN); + GET_LENGTH_INC(tlen, p); /* mb-len */ + GET_LENGTH_INC(tlen2, p); /* string len */ + tlen2 *= tlen; + DATA_ENSURE(tlen2); + while (tlen2-- > 0) { + if (*p != *s) goto fail; + p++; s++; + } + sprev = s - tlen; + MOP_OUT; + continue; + break; + + case OP_CCLASS: MOP_IN(OP_CCLASS); + DATA_ENSURE(1); + if (BITSET_AT(((BitSetRef )p), *s) == 0) goto fail; + p += SIZE_BITSET; + s += enclen(encode, s); /* OP_CCLASS can match mb-code. \D, \S */ + MOP_OUT; + break; + + case OP_CCLASS_MB: MOP_IN(OP_CCLASS_MB); + if (! ONIGENC_IS_MBC_HEAD(encode, s)) goto fail; + + cclass_mb: + GET_LENGTH_INC(tlen, p); + { + OnigCodePoint code; + UChar *ss; + int mb_len; + + DATA_ENSURE(1); + mb_len = enclen(encode, s); + DATA_ENSURE(mb_len); + ss = s; + s += mb_len; + code = ONIGENC_MBC_TO_CODE(encode, ss, s); + +#ifdef PLATFORM_UNALIGNED_WORD_ACCESS + if (! onig_is_in_code_range(p, code)) goto fail; +#else + q = p; + ALIGNMENT_RIGHT(q); + if (! onig_is_in_code_range(q, code)) goto fail; +#endif + } + p += tlen; + MOP_OUT; + break; + + case OP_CCLASS_MIX: MOP_IN(OP_CCLASS_MIX); + DATA_ENSURE(1); + if (ONIGENC_IS_MBC_HEAD(encode, s)) { + p += SIZE_BITSET; + goto cclass_mb; + } + else { + if (BITSET_AT(((BitSetRef )p), *s) == 0) + goto fail; + + p += SIZE_BITSET; + GET_LENGTH_INC(tlen, p); + p += tlen; + s++; + } + MOP_OUT; + break; + + case OP_CCLASS_NOT: MOP_IN(OP_CCLASS_NOT); + DATA_ENSURE(1); + if (BITSET_AT(((BitSetRef )p), *s) != 0) goto fail; + p += SIZE_BITSET; + s += enclen(encode, s); + MOP_OUT; + break; + + case OP_CCLASS_MB_NOT: MOP_IN(OP_CCLASS_MB_NOT); + DATA_ENSURE(1); + if (! ONIGENC_IS_MBC_HEAD(encode, s)) { + s++; + GET_LENGTH_INC(tlen, p); + p += tlen; + goto cc_mb_not_success; + } + + cclass_mb_not: + GET_LENGTH_INC(tlen, p); + { + OnigCodePoint code; + UChar *ss; + int mb_len = enclen(encode, s); + + if (! DATA_ENSURE_CHECK(mb_len)) { + DATA_ENSURE(1); + s = (UChar* )end; + p += tlen; + goto cc_mb_not_success; + } + + ss = s; + s += mb_len; + code = ONIGENC_MBC_TO_CODE(encode, ss, s); + +#ifdef PLATFORM_UNALIGNED_WORD_ACCESS + if (onig_is_in_code_range(p, code)) goto fail; +#else + q = p; + ALIGNMENT_RIGHT(q); + if (onig_is_in_code_range(q, code)) goto fail; +#endif + } + p += tlen; + + cc_mb_not_success: + MOP_OUT; + break; + + case OP_CCLASS_MIX_NOT: MOP_IN(OP_CCLASS_MIX_NOT); + DATA_ENSURE(1); + if (ONIGENC_IS_MBC_HEAD(encode, s)) { + p += SIZE_BITSET; + goto cclass_mb_not; + } + else { + if (BITSET_AT(((BitSetRef )p), *s) != 0) + goto fail; + + p += SIZE_BITSET; + GET_LENGTH_INC(tlen, p); + p += tlen; + s++; + } + MOP_OUT; + break; + + case OP_CCLASS_NODE: MOP_IN(OP_CCLASS_NODE); + { + OnigCodePoint code; + void *node; + int mb_len; + UChar *ss; + + DATA_ENSURE(1); + GET_POINTER_INC(node, p); + mb_len = enclen(encode, s); + ss = s; + s += mb_len; + DATA_ENSURE(0); + code = ONIGENC_MBC_TO_CODE(encode, ss, s); + if (onig_is_code_in_cc_len(mb_len, code, node) == 0) goto fail; + } + MOP_OUT; + break; + + case OP_ANYCHAR: MOP_IN(OP_ANYCHAR); + DATA_ENSURE(1); + n = enclen(encode, s); + DATA_ENSURE(n); + if (ONIGENC_IS_MBC_NEWLINE(encode, s, end)) goto fail; + s += n; + MOP_OUT; + break; + + case OP_ANYCHAR_ML: MOP_IN(OP_ANYCHAR_ML); + DATA_ENSURE(1); + n = enclen(encode, s); + DATA_ENSURE(n); + s += n; + MOP_OUT; + break; + + case OP_ANYCHAR_STAR: MOP_IN(OP_ANYCHAR_STAR); + while (DATA_ENSURE_CHECK1) { + STACK_PUSH_ALT(p, s, sprev); + n = enclen(encode, s); + DATA_ENSURE(n); + if (ONIGENC_IS_MBC_NEWLINE(encode, s, end)) goto fail; + sprev = s; + s += n; + } + MOP_OUT; + break; + + case OP_ANYCHAR_ML_STAR: MOP_IN(OP_ANYCHAR_ML_STAR); + while (DATA_ENSURE_CHECK1) { + STACK_PUSH_ALT(p, s, sprev); + n = enclen(encode, s); + if (n > 1) { + DATA_ENSURE(n); + sprev = s; + s += n; + } + else { + sprev = s; + s++; + } + } + MOP_OUT; + break; + + case OP_ANYCHAR_STAR_PEEK_NEXT: MOP_IN(OP_ANYCHAR_STAR_PEEK_NEXT); + while (DATA_ENSURE_CHECK1) { + if (*p == *s) { + STACK_PUSH_ALT(p + 1, s, sprev); + } + n = enclen(encode, s); + DATA_ENSURE(n); + if (ONIGENC_IS_MBC_NEWLINE(encode, s, end)) goto fail; + sprev = s; + s += n; + } + p++; + MOP_OUT; + break; + + case OP_ANYCHAR_ML_STAR_PEEK_NEXT:MOP_IN(OP_ANYCHAR_ML_STAR_PEEK_NEXT); + while (DATA_ENSURE_CHECK1) { + if (*p == *s) { + STACK_PUSH_ALT(p + 1, s, sprev); + } + n = enclen(encode, s); + if (n > 1) { + DATA_ENSURE(n); + sprev = s; + s += n; + } + else { + sprev = s; + s++; + } + } + p++; + MOP_OUT; + break; + +#ifdef USE_COMBINATION_EXPLOSION_CHECK + case OP_STATE_CHECK_ANYCHAR_STAR: MOP_IN(OP_STATE_CHECK_ANYCHAR_STAR); + GET_STATE_CHECK_NUM_INC(mem, p); + while (DATA_ENSURE_CHECK1) { + STATE_CHECK_VAL(scv, mem); + if (scv) goto fail; + + STACK_PUSH_ALT_WITH_STATE_CHECK(p, s, sprev, mem); + n = enclen(encode, s); + DATA_ENSURE(n); + if (ONIGENC_IS_MBC_NEWLINE(encode, s, end)) goto fail; + sprev = s; + s += n; + } + MOP_OUT; + break; + + case OP_STATE_CHECK_ANYCHAR_ML_STAR: + MOP_IN(OP_STATE_CHECK_ANYCHAR_ML_STAR); + + GET_STATE_CHECK_NUM_INC(mem, p); + while (DATA_ENSURE_CHECK1) { + STATE_CHECK_VAL(scv, mem); + if (scv) goto fail; + + STACK_PUSH_ALT_WITH_STATE_CHECK(p, s, sprev, mem); + n = enclen(encode, s); + if (n > 1) { + DATA_ENSURE(n); + sprev = s; + s += n; + } + else { + sprev = s; + s++; + } + } + MOP_OUT; + break; +#endif /* USE_COMBINATION_EXPLOSION_CHECK */ + + case OP_WORD: MOP_IN(OP_WORD); + DATA_ENSURE(1); + if (! ONIGENC_IS_MBC_WORD(encode, s, end)) + goto fail; + + s += enclen(encode, s); + MOP_OUT; + break; + + case OP_NOT_WORD: MOP_IN(OP_NOT_WORD); + DATA_ENSURE(1); + if (ONIGENC_IS_MBC_WORD(encode, s, end)) + goto fail; + + s += enclen(encode, s); + MOP_OUT; + break; + + case OP_WORD_BOUND: MOP_IN(OP_WORD_BOUND); + if (ON_STR_BEGIN(s)) { + DATA_ENSURE(1); + if (! ONIGENC_IS_MBC_WORD(encode, s, end)) + goto fail; + } + else if (ON_STR_END(s)) { + if (! ONIGENC_IS_MBC_WORD(encode, sprev, end)) + goto fail; + } + else { + if (ONIGENC_IS_MBC_WORD(encode, s, end) + == ONIGENC_IS_MBC_WORD(encode, sprev, end)) + goto fail; + } + MOP_OUT; + continue; + break; + + case OP_NOT_WORD_BOUND: MOP_IN(OP_NOT_WORD_BOUND); + if (ON_STR_BEGIN(s)) { + if (DATA_ENSURE_CHECK1 && ONIGENC_IS_MBC_WORD(encode, s, end)) + goto fail; + } + else if (ON_STR_END(s)) { + if (ONIGENC_IS_MBC_WORD(encode, sprev, end)) + goto fail; + } + else { + if (ONIGENC_IS_MBC_WORD(encode, s, end) + != ONIGENC_IS_MBC_WORD(encode, sprev, end)) + goto fail; + } + MOP_OUT; + continue; + break; + +#ifdef USE_WORD_BEGIN_END + case OP_WORD_BEGIN: MOP_IN(OP_WORD_BEGIN); + if (DATA_ENSURE_CHECK1 && ONIGENC_IS_MBC_WORD(encode, s, end)) { + if (ON_STR_BEGIN(s) || !ONIGENC_IS_MBC_WORD(encode, sprev, end)) { + MOP_OUT; + continue; + } + } + goto fail; + break; + + case OP_WORD_END: MOP_IN(OP_WORD_END); + if (!ON_STR_BEGIN(s) && ONIGENC_IS_MBC_WORD(encode, sprev, end)) { + if (ON_STR_END(s) || !ONIGENC_IS_MBC_WORD(encode, s, end)) { + MOP_OUT; + continue; + } + } + goto fail; + break; +#endif + + case OP_BEGIN_BUF: MOP_IN(OP_BEGIN_BUF); + if (! ON_STR_BEGIN(s)) goto fail; + + MOP_OUT; + continue; + break; + + case OP_END_BUF: MOP_IN(OP_END_BUF); + if (! ON_STR_END(s)) goto fail; + + MOP_OUT; + continue; + break; + + case OP_BEGIN_LINE: MOP_IN(OP_BEGIN_LINE); + if (ON_STR_BEGIN(s)) { + if (IS_NOTBOL(msa->options)) goto fail; + MOP_OUT; + continue; + } + else if (ONIGENC_IS_MBC_NEWLINE(encode, sprev, end) && !ON_STR_END(s)) { + MOP_OUT; + continue; + } + goto fail; + break; + + case OP_END_LINE: MOP_IN(OP_END_LINE); + if (ON_STR_END(s)) { +#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE + if (IS_EMPTY_STR || !ONIGENC_IS_MBC_NEWLINE(encode, sprev, end)) { +#endif + if (IS_NOTEOL(msa->options)) goto fail; + MOP_OUT; + continue; +#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE + } +#endif + } + else if (ONIGENC_IS_MBC_NEWLINE(encode, s, end)) { + MOP_OUT; + continue; + } +#ifdef USE_CRNL_AS_LINE_TERMINATOR + else if (ONIGENC_IS_MBC_CRNL(encode, s, end)) { + MOP_OUT; + continue; + } +#endif + goto fail; + break; + + case OP_SEMI_END_BUF: MOP_IN(OP_SEMI_END_BUF); + if (ON_STR_END(s)) { +#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE + if (IS_EMPTY_STR || !ONIGENC_IS_MBC_NEWLINE(encode, sprev, end)) { +#endif + if (IS_NOTEOL(msa->options)) goto fail; + MOP_OUT; + continue; +#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE + } +#endif + } + else if (ONIGENC_IS_MBC_NEWLINE(encode, s, end) && + ON_STR_END(s + enclen(encode, s))) { + MOP_OUT; + continue; + } +#ifdef USE_CRNL_AS_LINE_TERMINATOR + else if (ONIGENC_IS_MBC_CRNL(encode, s, end)) { + UChar* ss = s + enclen(encode, s); + ss += enclen(encode, ss); + if (ON_STR_END(ss)) { + MOP_OUT; + continue; + } + } +#endif + goto fail; + break; + + case OP_BEGIN_POSITION: MOP_IN(OP_BEGIN_POSITION); + if (s != msa->start) + goto fail; + + MOP_OUT; + continue; + break; + + case OP_MEMORY_START_PUSH: MOP_IN(OP_MEMORY_START_PUSH); + GET_MEMNUM_INC(mem, p); + STACK_PUSH_MEM_START(mem, s); + MOP_OUT; + continue; + break; + + case OP_MEMORY_START: MOP_IN(OP_MEMORY_START); + GET_MEMNUM_INC(mem, p); + mem_start_stk[mem] = (OnigStackIndex )((void* )s); + MOP_OUT; + continue; + break; + + case OP_MEMORY_END_PUSH: MOP_IN(OP_MEMORY_END_PUSH); + GET_MEMNUM_INC(mem, p); + STACK_PUSH_MEM_END(mem, s); + MOP_OUT; + continue; + break; + + case OP_MEMORY_END: MOP_IN(OP_MEMORY_END); + GET_MEMNUM_INC(mem, p); + mem_end_stk[mem] = (OnigStackIndex )((void* )s); + MOP_OUT; + continue; + break; + +#ifdef USE_SUBEXP_CALL + case OP_MEMORY_END_PUSH_REC: MOP_IN(OP_MEMORY_END_PUSH_REC); + GET_MEMNUM_INC(mem, p); + STACK_GET_MEM_START(mem, stkp); /* should be before push mem-end. */ + STACK_PUSH_MEM_END(mem, s); + mem_start_stk[mem] = GET_STACK_INDEX(stkp); + MOP_OUT; + continue; + break; + + case OP_MEMORY_END_REC: MOP_IN(OP_MEMORY_END_REC); + GET_MEMNUM_INC(mem, p); + mem_end_stk[mem] = (OnigStackIndex )((void* )s); + STACK_GET_MEM_START(mem, stkp); + + if (BIT_STATUS_AT(reg->bt_mem_start, mem)) + mem_start_stk[mem] = GET_STACK_INDEX(stkp); + else + mem_start_stk[mem] = (OnigStackIndex )((void* )stkp->u.mem.pstr); + + STACK_PUSH_MEM_END_MARK(mem); + MOP_OUT; + continue; + break; +#endif + + case OP_BACKREF1: MOP_IN(OP_BACKREF1); + mem = 1; + goto backref; + break; + + case OP_BACKREF2: MOP_IN(OP_BACKREF2); + mem = 2; + goto backref; + break; + + case OP_BACKREFN: MOP_IN(OP_BACKREFN); + GET_MEMNUM_INC(mem, p); + backref: + { + int len; + UChar *pstart, *pend; + + /* if you want to remove following line, + you should check in parse and compile time. */ + if (mem > num_mem) goto fail; + if (mem_end_stk[mem] == INVALID_STACK_INDEX) goto fail; + if (mem_start_stk[mem] == INVALID_STACK_INDEX) goto fail; + + if (BIT_STATUS_AT(reg->bt_mem_start, mem)) + pstart = STACK_AT(mem_start_stk[mem])->u.mem.pstr; + else + pstart = (UChar* )((void* )mem_start_stk[mem]); + + pend = (BIT_STATUS_AT(reg->bt_mem_end, mem) + ? STACK_AT(mem_end_stk[mem])->u.mem.pstr + : (UChar* )((void* )mem_end_stk[mem])); + n = pend - pstart; + DATA_ENSURE(n); + sprev = s; + STRING_CMP(pstart, s, n); + while (sprev + (len = enclen(encode, sprev)) < s) + sprev += len; + + MOP_OUT; + continue; + } + break; + + case OP_BACKREFN_IC: MOP_IN(OP_BACKREFN_IC); + GET_MEMNUM_INC(mem, p); + { + int len; + UChar *pstart, *pend; + + /* if you want to remove following line, + you should check in parse and compile time. */ + if (mem > num_mem) goto fail; + if (mem_end_stk[mem] == INVALID_STACK_INDEX) goto fail; + if (mem_start_stk[mem] == INVALID_STACK_INDEX) goto fail; + + if (BIT_STATUS_AT(reg->bt_mem_start, mem)) + pstart = STACK_AT(mem_start_stk[mem])->u.mem.pstr; + else + pstart = (UChar* )((void* )mem_start_stk[mem]); + + pend = (BIT_STATUS_AT(reg->bt_mem_end, mem) + ? STACK_AT(mem_end_stk[mem])->u.mem.pstr + : (UChar* )((void* )mem_end_stk[mem])); + n = pend - pstart; + DATA_ENSURE(n); + sprev = s; + STRING_CMP_IC(case_fold_flag, pstart, &s, n); + while (sprev + (len = enclen(encode, sprev)) < s) + sprev += len; + + MOP_OUT; + continue; + } + break; + + case OP_BACKREF_MULTI: MOP_IN(OP_BACKREF_MULTI); + { + int len, is_fail; + UChar *pstart, *pend, *swork; + + GET_LENGTH_INC(tlen, p); + for (i = 0; i < tlen; i++) { + GET_MEMNUM_INC(mem, p); + + if (mem_end_stk[mem] == INVALID_STACK_INDEX) continue; + if (mem_start_stk[mem] == INVALID_STACK_INDEX) continue; + + if (BIT_STATUS_AT(reg->bt_mem_start, mem)) + pstart = STACK_AT(mem_start_stk[mem])->u.mem.pstr; + else + pstart = (UChar* )((void* )mem_start_stk[mem]); + + pend = (BIT_STATUS_AT(reg->bt_mem_end, mem) + ? STACK_AT(mem_end_stk[mem])->u.mem.pstr + : (UChar* )((void* )mem_end_stk[mem])); + n = pend - pstart; + DATA_ENSURE(n); + sprev = s; + swork = s; + STRING_CMP_VALUE(pstart, swork, n, is_fail); + if (is_fail) continue; + s = swork; + while (sprev + (len = enclen(encode, sprev)) < s) + sprev += len; + + p += (SIZE_MEMNUM * (tlen - i - 1)); + break; /* success */ + } + if (i == tlen) goto fail; + MOP_OUT; + continue; + } + break; + + case OP_BACKREF_MULTI_IC: MOP_IN(OP_BACKREF_MULTI_IC); + { + int len, is_fail; + UChar *pstart, *pend, *swork; + + GET_LENGTH_INC(tlen, p); + for (i = 0; i < tlen; i++) { + GET_MEMNUM_INC(mem, p); + + if (mem_end_stk[mem] == INVALID_STACK_INDEX) continue; + if (mem_start_stk[mem] == INVALID_STACK_INDEX) continue; + + if (BIT_STATUS_AT(reg->bt_mem_start, mem)) + pstart = STACK_AT(mem_start_stk[mem])->u.mem.pstr; + else + pstart = (UChar* )((void* )mem_start_stk[mem]); + + pend = (BIT_STATUS_AT(reg->bt_mem_end, mem) + ? STACK_AT(mem_end_stk[mem])->u.mem.pstr + : (UChar* )((void* )mem_end_stk[mem])); + n = pend - pstart; + DATA_ENSURE(n); + sprev = s; + swork = s; + STRING_CMP_VALUE_IC(case_fold_flag, pstart, &swork, n, is_fail); + if (is_fail) continue; + s = swork; + while (sprev + (len = enclen(encode, sprev)) < s) + sprev += len; + + p += (SIZE_MEMNUM * (tlen - i - 1)); + break; /* success */ + } + if (i == tlen) goto fail; + MOP_OUT; + continue; + } + break; + +#ifdef USE_BACKREF_WITH_LEVEL + case OP_BACKREF_WITH_LEVEL: + { + int len; + OnigOptionType ic; + LengthType level; + + GET_OPTION_INC(ic, p); + GET_LENGTH_INC(level, p); + GET_LENGTH_INC(tlen, p); + + sprev = s; + if (backref_match_at_nested_level(reg, stk, stk_base, ic + , case_fold_flag, (int )level, (int )tlen, p, &s, end)) { + while (sprev + (len = enclen(encode, sprev)) < s) + sprev += len; + + p += (SIZE_MEMNUM * tlen); + } + else + goto fail; + + MOP_OUT; + continue; + } + + break; +#endif + +#if 0 /* no need: IS_DYNAMIC_OPTION() == 0 */ + case OP_SET_OPTION_PUSH: MOP_IN(OP_SET_OPTION_PUSH); + GET_OPTION_INC(option, p); + STACK_PUSH_ALT(p, s, sprev); + p += SIZE_OP_SET_OPTION + SIZE_OP_FAIL; + MOP_OUT; + continue; + break; + + case OP_SET_OPTION: MOP_IN(OP_SET_OPTION); + GET_OPTION_INC(option, p); + MOP_OUT; + continue; + break; +#endif + + case OP_NULL_CHECK_START: MOP_IN(OP_NULL_CHECK_START); + GET_MEMNUM_INC(mem, p); /* mem: null check id */ + STACK_PUSH_NULL_CHECK_START(mem, s); + MOP_OUT; + continue; + break; + + case OP_NULL_CHECK_END: MOP_IN(OP_NULL_CHECK_END); + { + int isnull; + + GET_MEMNUM_INC(mem, p); /* mem: null check id */ + STACK_NULL_CHECK(isnull, mem, s); + if (isnull) { +#ifdef ONIG_DEBUG_MATCH + fprintf(stderr, "NULL_CHECK_END: skip id:%d, s:%d\n", + (int )mem, (int )s); +#endif + null_check_found: + /* empty loop founded, skip next instruction */ + switch (*p++) { + case OP_JUMP: + case OP_PUSH: + p += SIZE_RELADDR; + break; + case OP_REPEAT_INC: + case OP_REPEAT_INC_NG: + case OP_REPEAT_INC_SG: + case OP_REPEAT_INC_NG_SG: + p += SIZE_MEMNUM; + break; + default: + goto unexpected_bytecode_error; + break; + } + } + } + MOP_OUT; + continue; + break; + +#ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT + case OP_NULL_CHECK_END_MEMST: MOP_IN(OP_NULL_CHECK_END_MEMST); + { + int isnull; + + GET_MEMNUM_INC(mem, p); /* mem: null check id */ + STACK_NULL_CHECK_MEMST(isnull, mem, s, reg); + if (isnull) { +#ifdef ONIG_DEBUG_MATCH + fprintf(stderr, "NULL_CHECK_END_MEMST: skip id:%d, s:%d\n", + (int )mem, (int )s); +#endif + if (isnull == -1) goto fail; + goto null_check_found; + } + } + MOP_OUT; + continue; + break; +#endif + +#ifdef USE_SUBEXP_CALL + case OP_NULL_CHECK_END_MEMST_PUSH: + MOP_IN(OP_NULL_CHECK_END_MEMST_PUSH); + { + int isnull; + + GET_MEMNUM_INC(mem, p); /* mem: null check id */ +#ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT + STACK_NULL_CHECK_MEMST_REC(isnull, mem, s, reg); +#else + STACK_NULL_CHECK_REC(isnull, mem, s); +#endif + if (isnull) { +#ifdef ONIG_DEBUG_MATCH + fprintf(stderr, "NULL_CHECK_END_MEMST_PUSH: skip id:%d, s:%d\n", + (int )mem, (int )s); +#endif + if (isnull == -1) goto fail; + goto null_check_found; + } + else { + STACK_PUSH_NULL_CHECK_END(mem); + } + } + MOP_OUT; + continue; + break; +#endif + + case OP_JUMP: MOP_IN(OP_JUMP); + GET_RELADDR_INC(addr, p); + p += addr; + MOP_OUT; + CHECK_INTERRUPT_IN_MATCH_AT; + continue; + break; + + case OP_PUSH: MOP_IN(OP_PUSH); + GET_RELADDR_INC(addr, p); + STACK_PUSH_ALT(p + addr, s, sprev); + MOP_OUT; + continue; + break; + +#ifdef USE_COMBINATION_EXPLOSION_CHECK + case OP_STATE_CHECK_PUSH: MOP_IN(OP_STATE_CHECK_PUSH); + GET_STATE_CHECK_NUM_INC(mem, p); + STATE_CHECK_VAL(scv, mem); + if (scv) goto fail; + + GET_RELADDR_INC(addr, p); + STACK_PUSH_ALT_WITH_STATE_CHECK(p + addr, s, sprev, mem); + MOP_OUT; + continue; + break; + + case OP_STATE_CHECK_PUSH_OR_JUMP: MOP_IN(OP_STATE_CHECK_PUSH_OR_JUMP); + GET_STATE_CHECK_NUM_INC(mem, p); + GET_RELADDR_INC(addr, p); + STATE_CHECK_VAL(scv, mem); + if (scv) { + p += addr; + } + else { + STACK_PUSH_ALT_WITH_STATE_CHECK(p + addr, s, sprev, mem); + } + MOP_OUT; + continue; + break; + + case OP_STATE_CHECK: MOP_IN(OP_STATE_CHECK); + GET_STATE_CHECK_NUM_INC(mem, p); + STATE_CHECK_VAL(scv, mem); + if (scv) goto fail; + + STACK_PUSH_STATE_CHECK(s, mem); + MOP_OUT; + continue; + break; +#endif /* USE_COMBINATION_EXPLOSION_CHECK */ + + case OP_POP: MOP_IN(OP_POP); + STACK_POP_ONE; + MOP_OUT; + continue; + break; + + case OP_PUSH_OR_JUMP_EXACT1: MOP_IN(OP_PUSH_OR_JUMP_EXACT1); + GET_RELADDR_INC(addr, p); + if (*p == *s && DATA_ENSURE_CHECK1) { + p++; + STACK_PUSH_ALT(p + addr, s, sprev); + MOP_OUT; + continue; + } + p += (addr + 1); + MOP_OUT; + continue; + break; + + case OP_PUSH_IF_PEEK_NEXT: MOP_IN(OP_PUSH_IF_PEEK_NEXT); + GET_RELADDR_INC(addr, p); + if (*p == *s) { + p++; + STACK_PUSH_ALT(p + addr, s, sprev); + MOP_OUT; + continue; + } + p++; + MOP_OUT; + continue; + break; + + case OP_REPEAT: MOP_IN(OP_REPEAT); + { + GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */ + GET_RELADDR_INC(addr, p); + + STACK_ENSURE(1); + repeat_stk[mem] = GET_STACK_INDEX(stk); + STACK_PUSH_REPEAT(mem, p); + + if (reg->repeat_range[mem].lower == 0) { + STACK_PUSH_ALT(p + addr, s, sprev); + } + } + MOP_OUT; + continue; + break; + + case OP_REPEAT_NG: MOP_IN(OP_REPEAT_NG); + { + GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */ + GET_RELADDR_INC(addr, p); + + STACK_ENSURE(1); + repeat_stk[mem] = GET_STACK_INDEX(stk); + STACK_PUSH_REPEAT(mem, p); + + if (reg->repeat_range[mem].lower == 0) { + STACK_PUSH_ALT(p, s, sprev); + p += addr; + } + } + MOP_OUT; + continue; + break; + + case OP_REPEAT_INC: MOP_IN(OP_REPEAT_INC); + GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */ + si = repeat_stk[mem]; + stkp = STACK_AT(si); + + repeat_inc: + stkp->u.repeat.count++; + if (stkp->u.repeat.count >= reg->repeat_range[mem].upper) { + /* end of repeat. Nothing to do. */ + } + else if (stkp->u.repeat.count >= reg->repeat_range[mem].lower) { + STACK_PUSH_ALT(p, s, sprev); + p = STACK_AT(si)->u.repeat.pcode; /* Don't use stkp after PUSH. */ + } + else { + p = stkp->u.repeat.pcode; + } + STACK_PUSH_REPEAT_INC(si); + MOP_OUT; + CHECK_INTERRUPT_IN_MATCH_AT; + continue; + break; + + case OP_REPEAT_INC_SG: MOP_IN(OP_REPEAT_INC_SG); + GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */ + STACK_GET_REPEAT(mem, stkp); + si = GET_STACK_INDEX(stkp); + goto repeat_inc; + break; + + case OP_REPEAT_INC_NG: MOP_IN(OP_REPEAT_INC_NG); + GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */ + si = repeat_stk[mem]; + stkp = STACK_AT(si); + + repeat_inc_ng: + stkp->u.repeat.count++; + if (stkp->u.repeat.count < reg->repeat_range[mem].upper) { + if (stkp->u.repeat.count >= reg->repeat_range[mem].lower) { + UChar* pcode = stkp->u.repeat.pcode; + + STACK_PUSH_REPEAT_INC(si); + STACK_PUSH_ALT(pcode, s, sprev); + } + else { + p = stkp->u.repeat.pcode; + STACK_PUSH_REPEAT_INC(si); + } + } + else if (stkp->u.repeat.count == reg->repeat_range[mem].upper) { + STACK_PUSH_REPEAT_INC(si); + } + MOP_OUT; + CHECK_INTERRUPT_IN_MATCH_AT; + continue; + break; + + case OP_REPEAT_INC_NG_SG: MOP_IN(OP_REPEAT_INC_NG_SG); + GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */ + STACK_GET_REPEAT(mem, stkp); + si = GET_STACK_INDEX(stkp); + goto repeat_inc_ng; + break; + + case OP_PUSH_POS: MOP_IN(OP_PUSH_POS); + STACK_PUSH_POS(s, sprev); + MOP_OUT; + continue; + break; + + case OP_POP_POS: MOP_IN(OP_POP_POS); + { + STACK_POS_END(stkp); + s = stkp->u.state.pstr; + sprev = stkp->u.state.pstr_prev; + } + MOP_OUT; + continue; + break; + + case OP_PUSH_POS_NOT: MOP_IN(OP_PUSH_POS_NOT); + GET_RELADDR_INC(addr, p); + STACK_PUSH_POS_NOT(p + addr, s, sprev); + MOP_OUT; + continue; + break; + + case OP_FAIL_POS: MOP_IN(OP_FAIL_POS); + STACK_POP_TIL_POS_NOT; + goto fail; + break; + + case OP_PUSH_STOP_BT: MOP_IN(OP_PUSH_STOP_BT); + STACK_PUSH_STOP_BT; + MOP_OUT; + continue; + break; + + case OP_POP_STOP_BT: MOP_IN(OP_POP_STOP_BT); + STACK_STOP_BT_END; + MOP_OUT; + continue; + break; + + case OP_LOOK_BEHIND: MOP_IN(OP_LOOK_BEHIND); + GET_LENGTH_INC(tlen, p); + s = (UChar* )ONIGENC_STEP_BACK(encode, str, s, (int )tlen); + if (IS_NULL(s)) goto fail; + sprev = (UChar* )onigenc_get_prev_char_head(encode, str, s); + MOP_OUT; + continue; + break; + + case OP_PUSH_LOOK_BEHIND_NOT: MOP_IN(OP_PUSH_LOOK_BEHIND_NOT); + GET_RELADDR_INC(addr, p); + GET_LENGTH_INC(tlen, p); + q = (UChar* )ONIGENC_STEP_BACK(encode, str, s, (int )tlen); + if (IS_NULL(q)) { + /* too short case -> success. ex. /(?<!XXX)a/.match("a") + If you want to change to fail, replace following line. */ + p += addr; + /* goto fail; */ + } + else { + STACK_PUSH_LOOK_BEHIND_NOT(p + addr, s, sprev); + s = q; + sprev = (UChar* )onigenc_get_prev_char_head(encode, str, s); + } + MOP_OUT; + continue; + break; + + case OP_FAIL_LOOK_BEHIND_NOT: MOP_IN(OP_FAIL_LOOK_BEHIND_NOT); + STACK_POP_TIL_LOOK_BEHIND_NOT; + goto fail; + break; + +#ifdef USE_SUBEXP_CALL + case OP_CALL: MOP_IN(OP_CALL); + GET_ABSADDR_INC(addr, p); + STACK_PUSH_CALL_FRAME(p); + p = reg->p + addr; + MOP_OUT; + continue; + break; + + case OP_RETURN: MOP_IN(OP_RETURN); + STACK_RETURN(p); + STACK_PUSH_RETURN; + MOP_OUT; + continue; + break; +#endif + + case OP_FINISH: + goto finish; + break; + + fail: + MOP_OUT; + /* fall */ + case OP_FAIL: MOP_IN(OP_FAIL); + STACK_POP; + p = stk->u.state.pcode; + s = stk->u.state.pstr; + sprev = stk->u.state.pstr_prev; + +#ifdef USE_COMBINATION_EXPLOSION_CHECK + if (stk->u.state.state_check != 0) { + stk->type = STK_STATE_CHECK_MARK; + stk++; + } +#endif + + MOP_OUT; + continue; + break; + + default: + goto bytecode_error; + + } /* end of switch */ + sprev = sbegin; + } /* end of while(1) */ + + finish: + STACK_SAVE; + return best_len; + +#ifdef ONIG_DEBUG + stack_error: + STACK_SAVE; + return ONIGERR_STACK_BUG; +#endif + + bytecode_error: + STACK_SAVE; + return ONIGERR_UNDEFINED_BYTECODE; + + unexpected_bytecode_error: + STACK_SAVE; + return ONIGERR_UNEXPECTED_BYTECODE; +} + + +static UChar* +slow_search(OnigEncoding enc, UChar* target, UChar* target_end, + const UChar* text, const UChar* text_end, UChar* text_range) +{ + UChar *t, *p, *s, *end; + + end = (UChar* )text_end; + end -= target_end - target - 1; + if (end > text_range) + end = text_range; + + s = (UChar* )text; + + while (s < end) { + if (*s == *target) { + p = s + 1; + t = target + 1; + while (t < target_end) { + if (*t != *p++) + break; + t++; + } + if (t == target_end) + return s; + } + s += enclen(enc, s); + } + + return (UChar* )NULL; +} + +static int +str_lower_case_match(OnigEncoding enc, int case_fold_flag, + const UChar* t, const UChar* tend, + const UChar* p, const UChar* end) +{ + int lowlen; + UChar *q, lowbuf[ONIGENC_MBC_CASE_FOLD_MAXLEN]; + + while (t < tend) { + lowlen = ONIGENC_MBC_CASE_FOLD(enc, case_fold_flag, &p, end, lowbuf); + q = lowbuf; + while (lowlen > 0) { + if (*t++ != *q++) return 0; + lowlen--; + } + } + + return 1; +} + +static UChar* +slow_search_ic(OnigEncoding enc, int case_fold_flag, + UChar* target, UChar* target_end, + const UChar* text, const UChar* text_end, UChar* text_range) +{ + UChar *s, *end; + + end = (UChar* )text_end; + end -= target_end - target - 1; + if (end > text_range) + end = text_range; + + s = (UChar* )text; + + while (s < end) { + if (str_lower_case_match(enc, case_fold_flag, target, target_end, + s, text_end)) + return s; + + s += enclen(enc, s); + } + + return (UChar* )NULL; +} + +static UChar* +slow_search_backward(OnigEncoding enc, UChar* target, UChar* target_end, + const UChar* text, const UChar* adjust_text, + const UChar* text_end, const UChar* text_start) +{ + UChar *t, *p, *s; + + s = (UChar* )text_end; + s -= (target_end - target); + if (s > text_start) + s = (UChar* )text_start; + else + s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, adjust_text, s); + + while (s >= text) { + if (*s == *target) { + p = s + 1; + t = target + 1; + while (t < target_end) { + if (*t != *p++) + break; + t++; + } + if (t == target_end) + return s; + } + s = (UChar* )onigenc_get_prev_char_head(enc, adjust_text, s); + } + + return (UChar* )NULL; +} + +static UChar* +slow_search_backward_ic(OnigEncoding enc, int case_fold_flag, + UChar* target, UChar* target_end, + const UChar* text, const UChar* adjust_text, + const UChar* text_end, const UChar* text_start) +{ + UChar *s; + + s = (UChar* )text_end; + s -= (target_end - target); + if (s > text_start) + s = (UChar* )text_start; + else + s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, adjust_text, s); + + while (s >= text) { + if (str_lower_case_match(enc, case_fold_flag, + target, target_end, s, text_end)) + return s; + + s = (UChar* )onigenc_get_prev_char_head(enc, adjust_text, s); + } + + return (UChar* )NULL; +} + +static UChar* +bm_search_notrev(regex_t* reg, const UChar* target, const UChar* target_end, + const UChar* text, const UChar* text_end, + const UChar* text_range) +{ + const UChar *s, *se, *t, *p, *end; + const UChar *tail; + int skip, tlen1; + +#ifdef ONIG_DEBUG_SEARCH + fprintf(stderr, "bm_search_notrev: text: %d, text_end: %d, text_range: %d\n", + (int )text, (int )text_end, (int )text_range); +#endif + + tail = target_end - 1; + tlen1 = tail - target; + end = text_range; + if (end + tlen1 > text_end) + end = text_end - tlen1; + + s = text; + + if (IS_NULL(reg->int_map)) { + while (s < end) { + p = se = s + tlen1; + t = tail; + while (*p == *t) { + if (t == target) return (UChar* )s; + p--; t--; + } + skip = reg->map[*se]; + t = s; + do { + s += enclen(reg->enc, s); + } while ((s - t) < skip && s < end); + } + } + else { + while (s < end) { + p = se = s + tlen1; + t = tail; + while (*p == *t) { + if (t == target) return (UChar* )s; + p--; t--; + } + skip = reg->int_map[*se]; + t = s; + do { + s += enclen(reg->enc, s); + } while ((s - t) < skip && s < end); + } + } + + return (UChar* )NULL; +} + +static UChar* +bm_search(regex_t* reg, const UChar* target, const UChar* target_end, + const UChar* text, const UChar* text_end, const UChar* text_range) +{ + const UChar *s, *t, *p, *end; + const UChar *tail; + + end = text_range + (target_end - target) - 1; + if (end > text_end) + end = text_end; + + tail = target_end - 1; + s = text + (target_end - target) - 1; + if (IS_NULL(reg->int_map)) { + while (s < end) { + p = s; + t = tail; + while (*p == *t) { + if (t == target) return (UChar* )p; + p--; t--; + } + s += reg->map[*s]; + } + } + else { /* see int_map[] */ + while (s < end) { + p = s; + t = tail; + while (*p == *t) { + if (t == target) return (UChar* )p; + p--; t--; + } + s += reg->int_map[*s]; + } + } + return (UChar* )NULL; +} + +static int +set_bm_backward_skip(UChar* s, UChar* end, OnigEncoding enc ARG_UNUSED, + int** skip) + +{ + int i, len; + + if (IS_NULL(*skip)) { + *skip = (int* )xmalloc(sizeof(int) * ONIG_CHAR_TABLE_SIZE); + if (IS_NULL(*skip)) return ONIGERR_MEMORY; + } + + len = end - s; + for (i = 0; i < ONIG_CHAR_TABLE_SIZE; i++) + (*skip)[i] = len; + + for (i = len - 1; i > 0; i--) + (*skip)[s[i]] = i; + + return 0; +} + +static UChar* +bm_search_backward(regex_t* reg, const UChar* target, const UChar* target_end, + const UChar* text, const UChar* adjust_text, + const UChar* text_end, const UChar* text_start) +{ + const UChar *s, *t, *p; + + s = text_end - (target_end - target); + if (text_start < s) + s = text_start; + else + s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, adjust_text, s); + + while (s >= text) { + p = s; + t = target; + while (t < target_end && *p == *t) { + p++; t++; + } + if (t == target_end) + return (UChar* )s; + + s -= reg->int_map_backward[*s]; + s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, adjust_text, s); + } + + return (UChar* )NULL; +} + +static UChar* +map_search(OnigEncoding enc, UChar map[], + const UChar* text, const UChar* text_range) +{ + const UChar *s = text; + + while (s < text_range) { + if (map[*s]) return (UChar* )s; + + s += enclen(enc, s); + } + return (UChar* )NULL; +} + +static UChar* +map_search_backward(OnigEncoding enc, UChar map[], + const UChar* text, const UChar* adjust_text, + const UChar* text_start) +{ + const UChar *s = text_start; + + while (s >= text) { + if (map[*s]) return (UChar* )s; + + s = onigenc_get_prev_char_head(enc, adjust_text, s); + } + return (UChar* )NULL; +} + +extern int +onig_match(regex_t* reg, const UChar* str, const UChar* end, const UChar* at, OnigRegion* region, + OnigOptionType option) +{ + int r; + UChar *prev; + OnigMatchArg msa; + + MATCH_ARG_INIT(msa, option, region, at); +#ifdef USE_COMBINATION_EXPLOSION_CHECK + { + int offset = at - str; + STATE_CHECK_BUFF_INIT(msa, end - str, offset, reg->num_comb_exp_check); + } +#endif + + if (region +#ifdef USE_POSIX_API_REGION_OPTION + && !IS_POSIX_REGION(option) +#endif + ) { + r = onig_region_resize_clear(region, reg->num_mem + 1); + } + else + r = 0; + + if (r == 0) { + prev = (UChar* )onigenc_get_prev_char_head(reg->enc, str, at); + r = match_at(reg, str, end, +#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE + end, +#endif + at, prev, &msa); + } + + MATCH_ARG_FREE(msa); + return r; +} + +static int +forward_search_range(regex_t* reg, const UChar* str, const UChar* end, UChar* s, + UChar* range, UChar** low, UChar** high, UChar** low_prev) +{ + UChar *p, *pprev = (UChar* )NULL; + +#ifdef ONIG_DEBUG_SEARCH + fprintf(stderr, "forward_search_range: str: %d, end: %d, s: %d, range: %d\n", + (int )str, (int )end, (int )s, (int )range); +#endif + + p = s; + if (reg->dmin > 0) { + if (ONIGENC_IS_SINGLEBYTE(reg->enc)) { + p += reg->dmin; + } + else { + UChar *q = p + reg->dmin; + while (p < q) p += enclen(reg->enc, p); + } + } + + retry: + switch (reg->optimize) { + case ONIG_OPTIMIZE_EXACT: + p = slow_search(reg->enc, reg->exact, reg->exact_end, p, end, range); + break; + case ONIG_OPTIMIZE_EXACT_IC: + p = slow_search_ic(reg->enc, reg->case_fold_flag, + reg->exact, reg->exact_end, p, end, range); + break; + + case ONIG_OPTIMIZE_EXACT_BM: + p = bm_search(reg, reg->exact, reg->exact_end, p, end, range); + break; + + case ONIG_OPTIMIZE_EXACT_BM_NOT_REV: + p = bm_search_notrev(reg, reg->exact, reg->exact_end, p, end, range); + break; + + case ONIG_OPTIMIZE_MAP: + p = map_search(reg->enc, reg->map, p, range); + break; + } + + if (p && p < range) { + if (p - reg->dmin < s) { + retry_gate: + pprev = p; + p += enclen(reg->enc, p); + goto retry; + } + + if (reg->sub_anchor) { + UChar* prev; + + switch (reg->sub_anchor) { + case ANCHOR_BEGIN_LINE: + if (!ON_STR_BEGIN(p)) { + prev = onigenc_get_prev_char_head(reg->enc, + (pprev ? pprev : str), p); + if (!ONIGENC_IS_MBC_NEWLINE(reg->enc, prev, end)) + goto retry_gate; + } + break; + + case ANCHOR_END_LINE: + if (ON_STR_END(p)) { +#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE + prev = (UChar* )onigenc_get_prev_char_head(reg->enc, + (pprev ? pprev : str), p); + if (prev && ONIGENC_IS_MBC_NEWLINE(reg->enc, prev, end)) + goto retry_gate; +#endif + } + else if (! ONIGENC_IS_MBC_NEWLINE(reg->enc, p, end) +#ifdef USE_CRNL_AS_LINE_TERMINATOR + && ! ONIGENC_IS_MBC_CRNL(reg->enc, p, end) +#endif + ) + goto retry_gate; + break; + } + } + + if (reg->dmax == 0) { + *low = p; + if (low_prev) { + if (*low > s) + *low_prev = onigenc_get_prev_char_head(reg->enc, s, p); + else + *low_prev = onigenc_get_prev_char_head(reg->enc, + (pprev ? pprev : str), p); + } + } + else { + if (reg->dmax != ONIG_INFINITE_DISTANCE) { + *low = p - reg->dmax; + if (*low > s) { + *low = onigenc_get_right_adjust_char_head_with_prev(reg->enc, s, + *low, (const UChar** )low_prev); + if (low_prev && IS_NULL(*low_prev)) + *low_prev = onigenc_get_prev_char_head(reg->enc, + (pprev ? pprev : s), *low); + } + else { + if (low_prev) + *low_prev = onigenc_get_prev_char_head(reg->enc, + (pprev ? pprev : str), *low); + } + } + } + /* no needs to adjust *high, *high is used as range check only */ + *high = p - reg->dmin; + +#ifdef ONIG_DEBUG_SEARCH + fprintf(stderr, + "forward_search_range success: low: %d, high: %d, dmin: %d, dmax: %d\n", + (int )(*low - str), (int )(*high - str), reg->dmin, reg->dmax); +#endif + return 1; /* success */ + } + + return 0; /* fail */ +} + +static int set_bm_backward_skip P_((UChar* s, UChar* end, OnigEncoding enc, + int** skip)); + +#define BM_BACKWARD_SEARCH_LENGTH_THRESHOLD 100 + +static int +backward_search_range(regex_t* reg, const UChar* str, const UChar* end, + UChar* s, const UChar* range, UChar* adjrange, + UChar** low, UChar** high) +{ + int r; + UChar *p; + + range += reg->dmin; + p = s; + + retry: + switch (reg->optimize) { + case ONIG_OPTIMIZE_EXACT: + exact_method: + p = slow_search_backward(reg->enc, reg->exact, reg->exact_end, + range, adjrange, end, p); + break; + + case ONIG_OPTIMIZE_EXACT_IC: + p = slow_search_backward_ic(reg->enc, reg->case_fold_flag, + reg->exact, reg->exact_end, + range, adjrange, end, p); + break; + + case ONIG_OPTIMIZE_EXACT_BM: + case ONIG_OPTIMIZE_EXACT_BM_NOT_REV: + if (IS_NULL(reg->int_map_backward)) { + if (s - range < BM_BACKWARD_SEARCH_LENGTH_THRESHOLD) + goto exact_method; + + r = set_bm_backward_skip(reg->exact, reg->exact_end, reg->enc, + &(reg->int_map_backward)); + if (r) return r; + } + p = bm_search_backward(reg, reg->exact, reg->exact_end, range, adjrange, + end, p); + break; + + case ONIG_OPTIMIZE_MAP: + p = map_search_backward(reg->enc, reg->map, range, adjrange, p); + break; + } + + if (p) { + if (reg->sub_anchor) { + UChar* prev; + + switch (reg->sub_anchor) { + case ANCHOR_BEGIN_LINE: + if (!ON_STR_BEGIN(p)) { + prev = onigenc_get_prev_char_head(reg->enc, str, p); + if (!ONIGENC_IS_MBC_NEWLINE(reg->enc, prev, end)) { + p = prev; + goto retry; + } + } + break; + + case ANCHOR_END_LINE: + if (ON_STR_END(p)) { +#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE + prev = onigenc_get_prev_char_head(reg->enc, adjrange, p); + if (IS_NULL(prev)) goto fail; + if (ONIGENC_IS_MBC_NEWLINE(reg->enc, prev, end)) { + p = prev; + goto retry; + } +#endif + } + else if (! ONIGENC_IS_MBC_NEWLINE(reg->enc, p, end) +#ifdef USE_CRNL_AS_LINE_TERMINATOR + && ! ONIGENC_IS_MBC_CRNL(reg->enc, p, end) +#endif + ) { + p = onigenc_get_prev_char_head(reg->enc, adjrange, p); + if (IS_NULL(p)) goto fail; + goto retry; + } + break; + } + } + + /* no needs to adjust *high, *high is used as range check only */ + if (reg->dmax != ONIG_INFINITE_DISTANCE) { + *low = p - reg->dmax; + *high = p - reg->dmin; + *high = onigenc_get_right_adjust_char_head(reg->enc, adjrange, *high); + } + +#ifdef ONIG_DEBUG_SEARCH + fprintf(stderr, "backward_search_range: low: %d, high: %d\n", + (int )(*low - str), (int )(*high - str)); +#endif + return 1; /* success */ + } + + fail: +#ifdef ONIG_DEBUG_SEARCH + fprintf(stderr, "backward_search_range: fail.\n"); +#endif + return 0; /* fail */ +} + + +extern int +onig_search(regex_t* reg, const UChar* str, const UChar* end, + const UChar* start, const UChar* range, OnigRegion* region, OnigOptionType option) +{ + int r; + UChar *s, *prev; + OnigMatchArg msa; + const UChar *orig_start = start; +#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE + const UChar *orig_range = range; +#endif + +#ifdef ONIG_DEBUG_SEARCH + fprintf(stderr, + "onig_search (entry point): str: %d, end: %d, start: %d, range: %d\n", + (int )str, (int )(end - str), (int )(start - str), (int )(range - str)); +#endif + + if (region +#ifdef USE_POSIX_API_REGION_OPTION + && !IS_POSIX_REGION(option) +#endif + ) { + r = onig_region_resize_clear(region, reg->num_mem + 1); + if (r) goto finish_no_msa; + } + + if (start > end || start < str) goto mismatch_no_msa; + + +#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE +#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE +#define MATCH_AND_RETURN_CHECK(upper_range) \ + r = match_at(reg, str, end, (upper_range), s, prev, &msa); \ + if (r != ONIG_MISMATCH) {\ + if (r >= 0) {\ + if (! IS_FIND_LONGEST(reg->options)) {\ + goto match;\ + }\ + }\ + else goto finish; /* error */ \ + } +#else +#define MATCH_AND_RETURN_CHECK(upper_range) \ + r = match_at(reg, str, end, (upper_range), s, prev, &msa); \ + if (r != ONIG_MISMATCH) {\ + if (r >= 0) {\ + goto match;\ + }\ + else goto finish; /* error */ \ + } +#endif /* USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE */ +#else +#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE +#define MATCH_AND_RETURN_CHECK(none) \ + r = match_at(reg, str, end, s, prev, &msa);\ + if (r != ONIG_MISMATCH) {\ + if (r >= 0) {\ + if (! IS_FIND_LONGEST(reg->options)) {\ + goto match;\ + }\ + }\ + else goto finish; /* error */ \ + } +#else +#define MATCH_AND_RETURN_CHECK(none) \ + r = match_at(reg, str, end, s, prev, &msa);\ + if (r != ONIG_MISMATCH) {\ + if (r >= 0) {\ + goto match;\ + }\ + else goto finish; /* error */ \ + } +#endif /* USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE */ +#endif /* USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE */ + + + /* anchor optimize: resume search range */ + if (reg->anchor != 0 && str < end) { + UChar *min_semi_end, *max_semi_end; + + if (reg->anchor & ANCHOR_BEGIN_POSITION) { + /* search start-position only */ + begin_position: + if (range > start) + range = start + 1; + else + range = start; + } + else if (reg->anchor & ANCHOR_BEGIN_BUF) { + /* search str-position only */ + if (range > start) { + if (start != str) goto mismatch_no_msa; + range = str + 1; + } + else { + if (range <= str) { + start = str; + range = str; + } + else + goto mismatch_no_msa; + } + } + else if (reg->anchor & ANCHOR_END_BUF) { + min_semi_end = max_semi_end = (UChar* )end; + + end_buf: + if ((OnigDistance )(max_semi_end - str) < reg->anchor_dmin) + goto mismatch_no_msa; + + if (range > start) { + if ((OnigDistance )(min_semi_end - start) > reg->anchor_dmax) { + start = min_semi_end - reg->anchor_dmax; + if (start < end) + start = onigenc_get_right_adjust_char_head(reg->enc, str, start); + else { /* match with empty at end */ + start = onigenc_get_prev_char_head(reg->enc, str, end); + } + } + if ((OnigDistance )(max_semi_end - (range - 1)) < reg->anchor_dmin) { + range = max_semi_end - reg->anchor_dmin + 1; + } + + if (start >= range) goto mismatch_no_msa; + } + else { + if ((OnigDistance )(min_semi_end - range) > reg->anchor_dmax) { + range = min_semi_end - reg->anchor_dmax; + } + if ((OnigDistance )(max_semi_end - start) < reg->anchor_dmin) { + start = max_semi_end - reg->anchor_dmin; + start = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, str, start); + } + if (range > start) goto mismatch_no_msa; + } + } + else if (reg->anchor & ANCHOR_SEMI_END_BUF) { + UChar* pre_end = ONIGENC_STEP_BACK(reg->enc, str, end, 1); + + max_semi_end = (UChar* )end; + if (ONIGENC_IS_MBC_NEWLINE(reg->enc, pre_end, end)) { + min_semi_end = pre_end; + +#ifdef USE_CRNL_AS_LINE_TERMINATOR + pre_end = ONIGENC_STEP_BACK(reg->enc, str, pre_end, 1); + if (IS_NOT_NULL(pre_end) && + ONIGENC_IS_MBC_CRNL(reg->enc, pre_end, end)) { + min_semi_end = pre_end; + } +#endif + if (min_semi_end > str && start <= min_semi_end) { + goto end_buf; + } + } + else { + min_semi_end = (UChar* )end; + goto end_buf; + } + } + else if ((reg->anchor & ANCHOR_ANYCHAR_STAR_ML)) { + goto begin_position; + } + } + else if (str == end) { /* empty string */ + static const UChar* address_for_empty_string = (UChar* )""; + +#ifdef ONIG_DEBUG_SEARCH + fprintf(stderr, "onig_search: empty string.\n"); +#endif + + if (reg->threshold_len == 0) { + start = end = str = address_for_empty_string; + s = (UChar* )start; + prev = (UChar* )NULL; + + MATCH_ARG_INIT(msa, option, region, start); +#ifdef USE_COMBINATION_EXPLOSION_CHECK + msa.state_check_buff = (void* )0; + msa.state_check_buff_size = 0; /* NO NEED, for valgrind */ +#endif + MATCH_AND_RETURN_CHECK(end); + goto mismatch; + } + goto mismatch_no_msa; + } + +#ifdef ONIG_DEBUG_SEARCH + fprintf(stderr, "onig_search(apply anchor): end: %d, start: %d, range: %d\n", + (int )(end - str), (int )(start - str), (int )(range - str)); +#endif + + MATCH_ARG_INIT(msa, option, region, orig_start); +#ifdef USE_COMBINATION_EXPLOSION_CHECK + { + int offset = (MIN(start, range) - str); + STATE_CHECK_BUFF_INIT(msa, end - str, offset, reg->num_comb_exp_check); + } +#endif + + s = (UChar* )start; + if (range > start) { /* forward search */ + if (s > str) + prev = onigenc_get_prev_char_head(reg->enc, str, s); + else + prev = (UChar* )NULL; + + if (reg->optimize != ONIG_OPTIMIZE_NONE) { + UChar *sch_range, *low, *high, *low_prev; + + sch_range = (UChar* )range; + if (reg->dmax != 0) { + if (reg->dmax == ONIG_INFINITE_DISTANCE) + sch_range = (UChar* )end; + else { + sch_range += reg->dmax; + if (sch_range > end) sch_range = (UChar* )end; + } + } + + if ((end - start) < reg->threshold_len) + goto mismatch; + + if (reg->dmax != ONIG_INFINITE_DISTANCE) { + do { + if (! forward_search_range(reg, str, end, s, sch_range, + &low, &high, &low_prev)) goto mismatch; + if (s < low) { + s = low; + prev = low_prev; + } + while (s <= high) { + MATCH_AND_RETURN_CHECK(orig_range); + prev = s; + s += enclen(reg->enc, s); + } + } while (s < range); + goto mismatch; + } + else { /* check only. */ + if (! forward_search_range(reg, str, end, s, sch_range, + &low, &high, (UChar** )NULL)) goto mismatch; + + if ((reg->anchor & ANCHOR_ANYCHAR_STAR) != 0) { + do { + MATCH_AND_RETURN_CHECK(orig_range); + prev = s; + s += enclen(reg->enc, s); + + while (!ONIGENC_IS_MBC_NEWLINE(reg->enc, prev, end) && s < range) { + prev = s; + s += enclen(reg->enc, s); + } + } while (s < range); + goto mismatch; + } + } + } + + do { + MATCH_AND_RETURN_CHECK(orig_range); + prev = s; + s += enclen(reg->enc, s); + } while (s < range); + + if (s == range) { /* because empty match with /$/. */ + MATCH_AND_RETURN_CHECK(orig_range); + } + } + else { /* backward search */ +#ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE + if (orig_start < end) + orig_start += enclen(reg->enc, orig_start); /* is upper range */ +#endif + + if (reg->optimize != ONIG_OPTIMIZE_NONE) { + UChar *low, *high, *adjrange, *sch_start; + + if (range < end) + adjrange = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, str, range); + else + adjrange = (UChar* )end; + + if (reg->dmax != ONIG_INFINITE_DISTANCE && + (end - range) >= reg->threshold_len) { + do { + sch_start = s + reg->dmax; + if (sch_start > end) sch_start = (UChar* )end; + if (backward_search_range(reg, str, end, sch_start, range, adjrange, + &low, &high) <= 0) + goto mismatch; + + if (s > high) + s = high; + + while (s >= low) { + prev = onigenc_get_prev_char_head(reg->enc, str, s); + MATCH_AND_RETURN_CHECK(orig_start); + s = prev; + } + } while (s >= range); + goto mismatch; + } + else { /* check only. */ + if ((end - range) < reg->threshold_len) goto mismatch; + + sch_start = s; + if (reg->dmax != 0) { + if (reg->dmax == ONIG_INFINITE_DISTANCE) + sch_start = (UChar* )end; + else { + sch_start += reg->dmax; + if (sch_start > end) sch_start = (UChar* )end; + else + sch_start = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, + start, sch_start); + } + } + if (backward_search_range(reg, str, end, sch_start, range, adjrange, + &low, &high) <= 0) goto mismatch; + } + } + + do { + prev = onigenc_get_prev_char_head(reg->enc, str, s); + MATCH_AND_RETURN_CHECK(orig_start); + s = prev; + } while (s >= range); + } + + mismatch: +#ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE + if (IS_FIND_LONGEST(reg->options)) { + if (msa.best_len >= 0) { + s = msa.best_s; + goto match; + } + } +#endif + r = ONIG_MISMATCH; + + finish: + MATCH_ARG_FREE(msa); + + /* If result is mismatch and no FIND_NOT_EMPTY option, + then the region is not setted in match_at(). */ + if (IS_FIND_NOT_EMPTY(reg->options) && region +#ifdef USE_POSIX_API_REGION_OPTION + && !IS_POSIX_REGION(option) +#endif + ) { + onig_region_clear(region); + } + +#ifdef ONIG_DEBUG + if (r != ONIG_MISMATCH) + fprintf(stderr, "onig_search: error %d\n", r); +#endif + return r; + + mismatch_no_msa: + r = ONIG_MISMATCH; + finish_no_msa: +#ifdef ONIG_DEBUG + if (r != ONIG_MISMATCH) + fprintf(stderr, "onig_search: error %d\n", r); +#endif + return r; + + match: + MATCH_ARG_FREE(msa); + return s - str; +} + +extern OnigEncoding +onig_get_encoding(regex_t* reg) +{ + return reg->enc; +} + +extern OnigOptionType +onig_get_options(regex_t* reg) +{ + return reg->options; +} + +extern OnigCaseFoldType +onig_get_case_fold_flag(regex_t* reg) +{ + return reg->case_fold_flag; +} + +extern OnigSyntaxType* +onig_get_syntax(regex_t* reg) +{ + return reg->syntax; +} + +extern int +onig_number_of_captures(regex_t* reg) +{ + return reg->num_mem; +} + +extern int +onig_number_of_capture_histories(regex_t* reg) +{ +#ifdef USE_CAPTURE_HISTORY + int i, n; + + n = 0; + for (i = 0; i <= ONIG_MAX_CAPTURE_HISTORY_GROUP; i++) { + if (BIT_STATUS_AT(reg->capture_history, i) != 0) + n++; + } + return n; +#else + return 0; +#endif +} + +extern void +onig_copy_encoding(OnigEncoding to, OnigEncoding from) +{ + *to = *from; +} + |