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ruby/regexec.c

3314 строки
75 KiB
C
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/**********************************************************************
regexec.c - Oniguruma (regular expression library)
Copyright (C) 2002-2004 K.Kosako (kosako@sofnec.co.jp)
**********************************************************************/
#include "regint.h"
static void
region_list_clear(OnigRegion** list)
{
int i;
if (IS_NOT_NULL(list)) {
for (i = 1; i <= ONIG_MAX_CAPTURE_HISTORY_GROUP; i++) {
if (IS_NOT_NULL(list[i])) {
xfree(list[i]);
list[i] = (OnigRegion* )0;
}
}
}
}
static void
region_list_free(OnigRegion* r)
{
if (IS_NOT_NULL(r->list)) {
region_list_clear(r->list);
xfree(r->list);
r->list = (OnigRegion** )0;
}
}
static OnigRegion**
region_list_new()
{
int i;
OnigRegion** list;
list = (OnigRegion** )xmalloc(sizeof(OnigRegion*)
* (ONIG_MAX_CAPTURE_HISTORY_GROUP + 1));
CHECK_NULL_RETURN(list);
for (i = 0; i <= ONIG_MAX_CAPTURE_HISTORY_GROUP; i++) {
list[i] = (OnigRegion* )0;
}
return list;
}
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;
}
region_list_clear(region->list);
}
extern int
onig_region_resize(OnigRegion* region, int n)
{
int i;
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;
}
for (i = 0; i < region->num_regs; i++) {
region->beg[i] = region->end[i] = ONIG_REGION_NOTPOS;
}
if (IS_NOT_NULL(region->list))
region_list_clear(region->list);
return 0;
}
static int
region_ensure_size(OnigRegion* region, int n)
{
int i, new_size;
if (region->allocated >= n)
return 0;
new_size = region->allocated;
if (new_size == 0)
new_size = ONIG_NREGION;
while (new_size < n)
new_size *= 2;
if (region->allocated == 0) {
region->beg = (int* )xmalloc(new_size * sizeof(int));
region->end = (int* )xmalloc(new_size * sizeof(int));
if (region->beg == 0 || region->end == 0)
return ONIGERR_MEMORY;
region->allocated = new_size;
}
else if (region->allocated < new_size) {
region->beg = (int* )xrealloc(region->beg, new_size * sizeof(int));
region->end = (int* )xrealloc(region->end, new_size * sizeof(int));
if (region->beg == 0 || region->end == 0)
return ONIGERR_MEMORY;
region->allocated = new_size;
}
for (i = region->num_regs; i < n; i++) {
region->beg[i] = region->end[i] = ONIG_REGION_NOTPOS;
}
return 0;
}
static int
region_list_add_entry(OnigRegion* region, int group, int start, int end)
{
int r, pos;
OnigRegion** list;
if (group > ONIG_MAX_CAPTURE_HISTORY_GROUP)
return ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY;
if (IS_NULL(region->list)) {
region->list = region_list_new();
CHECK_NULL_RETURN_VAL(region->list, ONIGERR_MEMORY);
}
list = region->list;
if (IS_NULL(list[group])) {
list[group] = onig_region_new();
CHECK_NULL_RETURN_VAL(list[group], ONIGERR_MEMORY);
}
r = region_ensure_size(list[group], list[group]->num_regs + 1);
if (r != 0) return r;
pos = list[group]->num_regs;
list[group]->beg[pos] = start;
list[group]->end[pos] = end;
list[group]->num_regs++;
return 0;
}
static void
onig_region_init(OnigRegion* region)
{
region->num_regs = 0;
region->allocated = 0;
region->beg = (int* )0;
region->end = (int* )0;
region->list = (OnigRegion** )0;
}
extern OnigRegion*
onig_region_new()
{
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;
}
region_list_free(r);
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;
if (IS_NOT_NULL(from->list)) {
if (IS_NULL(to->list)) {
to->list = region_list_new();
}
for (i = 1; i <= ONIG_MAX_CAPTURE_HISTORY_GROUP; i++) {
if (IS_NOT_NULL(from->list[i])) {
if (IS_NULL(to->list[i]))
to->list[i] = onig_region_new();
onig_region_copy(to->list[i], from->list[i]);
}
else {
if (IS_NOT_NULL(to->list[i])) {
xfree(to->list[i]);
to->list[i] = (OnigRegion* )0;
}
}
}
}
else
region_list_free(to);
}
/** stack **/
#define INVALID_STACK_INDEX -1
typedef int StackIndex;
typedef struct _StackType {
unsigned int type;
union {
struct {
UChar *pcode; /* byte code position */
UChar *pstr; /* string position */
UChar *pstr_prev; /* previous char position of pstr */
} state;
struct {
int count; /* for OP_REPEAT_INC, OP_REPEAT_INC_NG */
UChar *pcode; /* byte code position (head of repeated target) */
int num; /* repeat id */
} repeat;
struct {
StackIndex si; /* index of stack */
} repeat_inc;
struct {
int num; /* memory num */
UChar *pstr; /* start/end position */
/* Following information is setted, if this stack type is MEM-START */
StackIndex start; /* prev. info (for backtrack "(...)*" ) */
StackIndex end; /* prev. info (for backtrack "(...)*" ) */
} mem;
struct {
int num; /* null check id */
UChar *pstr; /* start position */
} null_check;
#ifdef USE_SUBEXP_CALL
struct {
UChar *ret_addr; /* byte code position */
int num; /* null check id */
UChar *pstr; /* string position */
} call_frame;
#endif
} u;
} StackType;
/* stack type */
/* used by normal-POP */
#define STK_ALT 0x0001
#define STK_LOOK_BEHIND_NOT 0x0003
#define STK_POS_NOT 0x0005
/* avoided by normal-POP, but value should be small */
#define STK_NULL_CHECK_START 0x0100
/* handled by normal-POP */
#define STK_MEM_START 0x0200
#define STK_MEM_END 0x0300
#define STK_REPEAT_INC 0x0400
/* avoided by normal-POP */
#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_MEM_END_MARK 0x0a00
#define STK_VOID 0x0b00 /* for fill a blank */
#define STK_NULL_CHECK_END 0x0c00 /* for recursive call */
/* stack type check mask */
#define STK_MASK_POP_USED 0x00ff
#define IS_TO_VOID_TARGET(stk) \
(((stk)->type & STK_MASK_POP_USED) || (stk)->type == STK_NULL_CHECK_START)
typedef struct {
void* stack_p;
int stack_n;
OnigOptionType options;
OnigRegion* region;
UChar* start; /* search start position (for \G: BEGIN_POSITION) */
} MatchArg;
#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)
#define MATCH_ARG_FREE(msa) if ((msa).stack_p) xfree((msa).stack_p)
#define STACK_INIT(alloc_addr, ptr_num, stack_num) do {\
if (msa->stack_p) {\
alloc_addr = (char* )xalloca(sizeof(char*) * (ptr_num));\
stk_alloc = (StackType* )(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(StackType) * (stack_num));\
stk_alloc = (StackType* )(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(StackType** arg_stk_base, StackType** arg_stk_end,
StackType** arg_stk, StackType* stk_alloc, MatchArg* msa)
{
unsigned int n;
StackType *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 = (StackType* )xmalloc(sizeof(StackType) * n * 2);
if (IS_NULL(x)) {
STACK_SAVE;
return ONIGERR_MEMORY;
}
xmemcpy(x, stk_base, n * sizeof(StackType));
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 = (StackType* )xrealloc(stk_base, sizeof(StackType) * 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(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)
#define STACK_PUSH_TYPE(stack_type) do {\
STACK_ENSURE(1);\
stk->type = (stack_type);\
STACK_INC;\
} while(0)
#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_MEM_END_MARK || k->type == STK_MEM_END) \
&& 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) \
if ((p) < stk_base) goto stack_error;
#else
#define STACK_BASE_CHECK(p)
#endif
#define STACK_POP_ONE do {\
stk--;\
STACK_BASE_CHECK(stk); \
} while(0)
#define STACK_POP do {\
switch (pop_level) {\
case STACK_POP_LEVEL_FREE:\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk); \
if ((stk->type & STK_MASK_POP_USED) != 0) break;\
}\
break;\
case STACK_POP_LEVEL_MEM_START:\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk); \
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;\
}\
}\
break;\
default:\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk); \
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;\
}\
}\
break;\
}\
} while(0)
#define STACK_POP_TIL_POS_NOT do {\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk); \
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;\
}\
}\
} while(0)
#define STACK_POP_TIL_LOOK_BEHIND_NOT do {\
while (1) {\
stk--;\
STACK_BASE_CHECK(stk); \
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;\
}\
}\
} while(0)
#define STACK_POS_END(k) do {\
k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k); \
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 {\
StackType *k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k); \
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 {\
StackType* k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k); \
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;\
StackType* k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k); \
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 {\
StackType* k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k); \
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;\
StackType* k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k); \
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); \
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;\
StackType* k = stk;\
while (1) {\
k--;\
STACK_BASE_CHECK(k); \
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(s1,ps2,len) do {\
if (string_cmp_ic(encode, s1, ps2, len) == 0) \
goto fail; \
} while(0)
static int string_cmp_ic(OnigEncoding enc,
UChar* s1, UChar** ps2, int mblen)
{
UChar buf1[ONIGENC_MBC_TO_LOWER_MAXLEN];
UChar buf2[ONIGENC_MBC_TO_LOWER_MAXLEN];
UChar *p1, *p2, *end, *s2;
int len1, len2;
s2 = *ps2;
end = s1 + mblen;
while (s1 < end) {
len1 = ONIGENC_MBC_TO_LOWER(enc, s1, buf1);
len2 = ONIGENC_MBC_TO_LOWER(enc, s2, buf2);
if (len1 != len2) return 0;
p1 = buf1;
p2 = buf2;
while (len1-- > 0) {
if (*p1 != *p2) return 0;
p1++;
p2++;
}
s1 += enc_len(enc, *s1);
s2 += enc_len(enc, *s2);
}
*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(s1,ps2,len,is_fail) do {\
if (string_cmp_ic(encode, s1, ps2, len) == 0) \
is_fail = 1; \
else \
is_fail = 0; \
} while(0)
#define ON_STR_BEGIN(s) ((s) == str)
#define ON_STR_END(s) ((s) == end)
#define IS_EMPTY_STR (str == end)
#define DATA_ENSURE(n) \
if (s + (n) > end) goto fail
#define DATA_ENSURE_CHECK(n) (s + (n) <= end)
#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 STAT_OP_IN(opcode) do {\
if (opcode == OpPrevTarget) OpPrevCounter[OpCurr]++;\
OpCurr = opcode;\
OpCounter[opcode]++;\
GETTIME(ts);\
} while (0)
#define STAT_OP_OUT do {\
GETTIME(te);\
OpTime[OpCurr] += TIMEDIFF(te, ts);\
} while (0)
#ifdef RUBY_PLATFORM
/*
* :nodoc:
*/
static VALUE onig_stat_print()
{
onig_print_statistics(stderr);
return Qnil;
}
#endif
extern void onig_statistics_init()
{
int i;
for (i = 0; i < 256; i++) {
OpCounter[i] = OpPrevCounter[i] = 0; OpTime[i] = 0;
}
MaxStackDepth = 0;
#ifdef RUBY_PLATFORM
rb_define_global_function("onig_stat_print", onig_stat_print, 0);
#endif
}
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 STAT_OP_IN(opcode)
#define STAT_OP_OUT
#endif
extern int
onig_is_in_code_range(UChar* p, OnigCodePoint code)
{
OnigCodePoint n, *data;
OnigCodePoint low, high, x;
GET_CODE_POINT(n, p);
data = (OnigCodePoint* )p;
data++;
for (low = 0, high = n; low < high; ) {
x = (low + high) >> 1;
if (code > data[x * 2 + 1])
low = x + 1;
else
high = x;
}
return ((low < n && code >= data[low * 2]) ? 1 : 0);
}
/* 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, UChar* str, UChar* end, UChar* sstart,
UChar* sprev, MatchArg* 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;
int ignore_case;
UChar *s, *q, *sbegin;
UChar *p = reg->p;
char *alloca_base;
StackType *stk_alloc, *stk_base, *stk, *stk_end;
StackType *stkp; /* used as any purpose. */
StackIndex *repeat_stk;
StackIndex *mem_start_stk, *mem_end_stk;
n = reg->num_repeat + reg->num_mem * 2;
STACK_INIT(alloca_base, n, INIT_MATCH_STACK_SIZE);
ignore_case = IS_IGNORECASE(option);
pop_level = reg->stack_pop_level;
num_mem = reg->num_mem;
repeat_stk = (StackIndex* )alloca_base;
mem_start_stk = (StackIndex* )(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 = 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 = enc_len(encode, *q);
while (len-- > 0) *bp++ = *q++;
}
if (q < end) { xmemcpy(bp, "...\"", 4); bp += 4; }
else { xmemcpy(bp, "\"", 1); bp += 1; }
*bp = 0;
fputs(buf, stderr);
for (i = 0; i < 20 - (bp - buf); i++) fputc(' ', stderr);
onig_print_compiled_byte_code(stderr, p, NULL);
fprintf(stderr, "\n");
}
#endif
sbegin = s;
switch (*p++) {
case OP_END: STAT_OP_IN(OP_END);
n = s - sstart;
if (n > best_len) {
OnigRegion* region = msa->region;
best_len = n;
if (region) {
#ifdef USE_POSIX_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_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;
}
}
if (reg->capture_history != 0) {
UChar *pstart, *pend;
for (i = 1; i <= ONIG_MAX_CAPTURE_HISTORY_GROUP; i++) {
if (BIT_STATUS_AT(reg->capture_history, i) != 0) {
stkp = stk_base;
do {
STACK_GET_MEM_RANGE(stkp, i, pstart, pend);
if (stkp < stk) {
int r;
r = region_list_add_entry(region, i,
pstart - str, pend - str);
if (r) {
STACK_SAVE;
return r;
}
}
stkp++;
} while (stkp < stk);
}
}
} /* list of captures */
#ifdef USE_POSIX_REGION_OPTION
} /* else IS_POSIX_REGION() */
#endif
} /* if (region) */
} /* n > best_len */
STAT_OP_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) && s < end) {
goto fail; /* for retry */
}
}
/* default behavior: return first-matching result. */
goto finish;
break;
case OP_EXACT1: STAT_OP_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++;
STAT_OP_OUT;
break;
case OP_EXACT1_IC: STAT_OP_IN(OP_EXACT1_IC);
{
int len;
UChar *q, lowbuf[ONIGENC_MBC_TO_LOWER_MAXLEN];
len = ONIGENC_MBC_TO_LOWER(encode, s, lowbuf);
DATA_ENSURE(len);
q = lowbuf;
s += enc_len(encode, *s);
while (len-- > 0) {
if (*p != *q) goto fail;
p++; q++;
}
}
STAT_OP_OUT;
break;
case OP_EXACT2: STAT_OP_IN(OP_EXACT2);
DATA_ENSURE(2);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
sprev = s;
p++; s++;
STAT_OP_OUT;
continue;
break;
case OP_EXACT3: STAT_OP_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++;
STAT_OP_OUT;
continue;
break;
case OP_EXACT4: STAT_OP_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++;
STAT_OP_OUT;
continue;
break;
case OP_EXACT5: STAT_OP_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++;
STAT_OP_OUT;
continue;
break;
case OP_EXACTN: STAT_OP_IN(OP_EXACTN);
GET_LENGTH_INC(tlen, p);
DATA_ENSURE(tlen);
while (tlen-- > 0) {
if (*p++ != *s++) goto fail;
}
sprev = s - 1;
STAT_OP_OUT;
continue;
break;
case OP_EXACTN_IC: STAT_OP_IN(OP_EXACTN_IC);
{
int len;
UChar *q, *endp, lowbuf[ONIGENC_MBC_TO_LOWER_MAXLEN];
GET_LENGTH_INC(tlen, p);
endp = p + tlen;
while (p < endp) {
len = ONIGENC_MBC_TO_LOWER(encode, s, lowbuf);
DATA_ENSURE(len);
sprev = s;
s += enc_len(encode, *s);
q = lowbuf;
while (len-- > 0) {
if (*p != *q) goto fail;
p++; q++;
}
}
}
STAT_OP_OUT;
continue;
break;
case OP_EXACTMB2N1: STAT_OP_IN(OP_EXACTMB2N1);
DATA_ENSURE(2);
if (*p != *s) goto fail;
p++; s++;
if (*p != *s) goto fail;
p++; s++;
STAT_OP_OUT;
break;
case OP_EXACTMB2N2: STAT_OP_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++;
STAT_OP_OUT;
continue;
break;
case OP_EXACTMB2N3: STAT_OP_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++;
STAT_OP_OUT;
continue;
break;
case OP_EXACTMB2N: STAT_OP_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;
STAT_OP_OUT;
continue;
break;
case OP_EXACTMB3N: STAT_OP_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;
STAT_OP_OUT;
continue;
break;
case OP_EXACTMBN: STAT_OP_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;
STAT_OP_OUT;
continue;
break;
case OP_CCLASS: STAT_OP_IN(OP_CCLASS);
DATA_ENSURE(1);
if (BITSET_AT(((BitSetRef )p), *s) == 0) goto fail;
p += SIZE_BITSET;
s += enc_len(encode, *s); /* OP_CCLASS can match mb-code. \D, \S */
STAT_OP_OUT;
break;
case OP_CCLASS_MB: STAT_OP_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 = enc_len(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;
STAT_OP_OUT;
break;
case OP_CCLASS_MIX: STAT_OP_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++;
}
STAT_OP_OUT;
break;
case OP_CCLASS_NOT: STAT_OP_IN(OP_CCLASS_NOT);
DATA_ENSURE(1);
if (BITSET_AT(((BitSetRef )p), *s) != 0) goto fail;
p += SIZE_BITSET;
s += enc_len(encode, *s);
STAT_OP_OUT;
break;
case OP_CCLASS_MB_NOT: STAT_OP_IN(OP_CCLASS_MB_NOT);
if (! ONIGENC_IS_MBC_HEAD(encode, *s)) {
DATA_ENSURE(1);
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 = enc_len(encode, *s);
if (s + mb_len > end) {
DATA_ENSURE(1);
s = 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:
STAT_OP_OUT;
break;
case OP_CCLASS_MIX_NOT: STAT_OP_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++;
}
STAT_OP_OUT;
break;
case OP_ANYCHAR: STAT_OP_IN(OP_ANYCHAR);
n = enc_len(encode, *s);
if (n > 1) {
DATA_ENSURE(n);
s += n;
}
else {
DATA_ENSURE(1);
if (ONIG_IS_NEWLINE(*s)) goto fail;
s++;
}
STAT_OP_OUT;
break;
case OP_ANYCHAR_ML: STAT_OP_IN(OP_ANYCHAR_ML);
n = enc_len(encode, *s);
DATA_ENSURE(n);
s += n;
STAT_OP_OUT;
break;
case OP_ANYCHAR_STAR: STAT_OP_IN(OP_ANYCHAR_STAR);
while (s < end) {
STACK_PUSH_ALT(p, s, sprev);
n = enc_len(encode, *s);
if (n > 1) {
DATA_ENSURE(n);
sprev = s;
s += n;
}
else {
if (ONIG_IS_NEWLINE(*s)) goto fail;
sprev = s;
s++;
}
}
STAT_OP_OUT;
break;
case OP_ANYCHAR_ML_STAR: STAT_OP_IN(OP_ANYCHAR_ML_STAR);
while (s < end) {
STACK_PUSH_ALT(p, s, sprev);
n = enc_len(encode, *s);
if (n > 1) {
DATA_ENSURE(n);
sprev = s;
s += n;
}
else {
sprev = s;
s++;
}
}
STAT_OP_OUT;
break;
case OP_ANYCHAR_STAR_PEEK_NEXT: STAT_OP_IN(OP_ANYCHAR_STAR_PEEK_NEXT);
while (s < end) {
if (*p == *s) {
STACK_PUSH_ALT(p + 1, s, sprev);
}
n = enc_len(encode, *s);
if (n > 1) {
DATA_ENSURE(n);
sprev = s;
s += n;
}
else {
if (ONIG_IS_NEWLINE(*s)) goto fail;
sprev = s;
s++;
}
}
p++;
STAT_OP_OUT;
break;
case OP_ANYCHAR_ML_STAR_PEEK_NEXT:STAT_OP_IN(OP_ANYCHAR_ML_STAR_PEEK_NEXT);
while (s < end) {
if (*p == *s) {
STACK_PUSH_ALT(p + 1, s, sprev);
}
n = enc_len(encode, *s);
if (n >1) {
DATA_ENSURE(n);
sprev = s;
s += n;
}
else {
sprev = s;
s++;
}
}
p++;
STAT_OP_OUT;
break;
case OP_WORD: STAT_OP_IN(OP_WORD);
DATA_ENSURE(1);
if (! ONIGENC_IS_MBC_WORD(encode, s, end))
goto fail;
s += enc_len(encode, *s);
STAT_OP_OUT;
break;
case OP_NOT_WORD: STAT_OP_IN(OP_NOT_WORD);
DATA_ENSURE(1);
if (ONIGENC_IS_MBC_WORD(encode, s, end))
goto fail;
s += enc_len(encode, *s);
STAT_OP_OUT;
break;
case OP_WORD_BOUND: STAT_OP_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;
}
STAT_OP_OUT;
continue;
break;
case OP_NOT_WORD_BOUND: STAT_OP_IN(OP_NOT_WORD_BOUND);
if (ON_STR_BEGIN(s)) {
if (DATA_ENSURE_CHECK(1) && 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;
}
STAT_OP_OUT;
continue;
break;
#ifdef USE_WORD_BEGIN_END
case OP_WORD_BEGIN: STAT_OP_IN(OP_WORD_BEGIN);
if (DATA_ENSURE_CHECK(1) && ONIGENC_IS_MBC_WORD(encode, s, end)) {
if (ON_STR_BEGIN(s) || !ONIGENC_IS_MBC_WORD(encode, sprev, end)) {
STAT_OP_OUT;
continue;
}
}
goto fail;
break;
case OP_WORD_END: STAT_OP_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)) {
STAT_OP_OUT;
continue;
}
}
goto fail;
break;
#endif
case OP_BEGIN_BUF: STAT_OP_IN(OP_BEGIN_BUF);
if (! ON_STR_BEGIN(s)) goto fail;
STAT_OP_OUT;
continue;
break;
case OP_END_BUF: STAT_OP_IN(OP_END_BUF);
if (! ON_STR_END(s)) goto fail;
STAT_OP_OUT;
continue;
break;
case OP_BEGIN_LINE: STAT_OP_IN(OP_BEGIN_LINE);
if (ON_STR_BEGIN(s)) {
if (IS_NOTBOL(msa->options)) goto fail;
STAT_OP_OUT;
continue;
}
else if (ONIG_IS_NEWLINE(*sprev) && !ON_STR_END(s)) {
STAT_OP_OUT;
continue;
}
goto fail;
break;
case OP_END_LINE: STAT_OP_IN(OP_END_LINE);
if (ON_STR_END(s)) {
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
if (IS_EMPTY_STR || !ONIG_IS_NEWLINE(*sprev)) {
#endif
if (IS_NOTEOL(msa->options)) goto fail;
STAT_OP_OUT;
continue;
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
}
#endif
}
else if (ONIG_IS_NEWLINE(*s)) {
STAT_OP_OUT;
continue;
}
goto fail;
break;
case OP_SEMI_END_BUF: STAT_OP_IN(OP_SEMI_END_BUF);
if (ON_STR_END(s)) {
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
if (IS_EMPTY_STR || !ONIG_IS_NEWLINE(*sprev)) {
#endif
if (IS_NOTEOL(msa->options)) goto fail; /* Is it needed? */
STAT_OP_OUT;
continue;
#ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE
}
#endif
}
if (ONIG_IS_NEWLINE(*s) && ON_STR_END(s+1)) {
STAT_OP_OUT;
continue;
}
goto fail;
break;
case OP_BEGIN_POSITION: STAT_OP_IN(OP_BEGIN_POSITION);
if (s != msa->start)
goto fail;
STAT_OP_OUT;
continue;
break;
case OP_MEMORY_START_PUSH: STAT_OP_IN(OP_MEMORY_START_PUSH);
GET_MEMNUM_INC(mem, p);
STACK_PUSH_MEM_START(mem, s);
STAT_OP_OUT;
continue;
break;
case OP_MEMORY_START: STAT_OP_IN(OP_MEMORY_START);
GET_MEMNUM_INC(mem, p);
mem_start_stk[mem] = (StackIndex )((void* )s);
STAT_OP_OUT;
continue;
break;
case OP_MEMORY_END_PUSH: STAT_OP_IN(OP_MEMORY_END_PUSH);
GET_MEMNUM_INC(mem, p);
STACK_PUSH_MEM_END(mem, s);
STAT_OP_OUT;
continue;
break;
case OP_MEMORY_END: STAT_OP_IN(OP_MEMORY_END);
GET_MEMNUM_INC(mem, p);
mem_end_stk[mem] = (StackIndex )((void* )s);
STAT_OP_OUT;
continue;
break;
#ifdef USE_SUBEXP_CALL
case OP_MEMORY_END_PUSH_REC: STAT_OP_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);
STAT_OP_OUT;
continue;
break;
case OP_MEMORY_END_REC: STAT_OP_IN(OP_MEMORY_END_REC);
GET_MEMNUM_INC(mem, p);
mem_end_stk[mem] = (StackIndex )((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] = (StackIndex )((void* )stkp->u.mem.pstr);
STACK_PUSH_MEM_END_MARK(mem);
STAT_OP_OUT;
continue;
break;
#endif
case OP_BACKREF1: STAT_OP_IN(OP_BACKREF1);
mem = 1;
goto backref;
break;
case OP_BACKREF2: STAT_OP_IN(OP_BACKREF2);
mem = 2;
goto backref;
break;
case OP_BACKREF3: STAT_OP_IN(OP_BACKREF3);
mem = 3;
goto backref;
break;
case OP_BACKREFN: STAT_OP_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 = enc_len(encode, *sprev)) < s)
sprev += len;
STAT_OP_OUT;
continue;
}
break;
case OP_BACKREFN_IC: STAT_OP_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(pstart, &s, n);
while (sprev + (len = enc_len(encode, *sprev)) < s)
sprev += len;
STAT_OP_OUT;
continue;
}
break;
case OP_BACKREF_MULTI: STAT_OP_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 = enc_len(encode, *sprev)) < s)
sprev += len;
p += (SIZE_MEMNUM * (tlen - i - 1));
break; /* success */
}
if (i == tlen) goto fail;
STAT_OP_OUT;
continue;
}
break;
case OP_BACKREF_MULTI_IC: STAT_OP_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(pstart, &swork, n, is_fail);
if (is_fail) continue;
s = swork;
while (sprev + (len = enc_len(encode, *sprev)) < s)
sprev += len;
p += (SIZE_MEMNUM * (tlen - i - 1));
break; /* success */
}
if (i == tlen) goto fail;
STAT_OP_OUT;
continue;
}
break;
case OP_SET_OPTION_PUSH: STAT_OP_IN(OP_SET_OPTION_PUSH);
GET_OPTION_INC(option, p);
ignore_case = IS_IGNORECASE(option);
STACK_PUSH_ALT(p, s, sprev);
p += SIZE_OP_SET_OPTION + SIZE_OP_FAIL;
STAT_OP_OUT;
continue;
break;
case OP_SET_OPTION: STAT_OP_IN(OP_SET_OPTION);
GET_OPTION_INC(option, p);
ignore_case = IS_IGNORECASE(option);
STAT_OP_OUT;
continue;
break;
case OP_NULL_CHECK_START: STAT_OP_IN(OP_NULL_CHECK_START);
GET_MEMNUM_INC(mem, p); /* mem: null check id */
STACK_PUSH_NULL_CHECK_START(mem, s);
STAT_OP_OUT;
continue;
break;
case OP_NULL_CHECK_END: STAT_OP_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:
p += SIZE_MEMNUM;
break;
default:
goto unexpected_bytecode_error;
break;
}
}
}
STAT_OP_OUT;
continue;
break;
#ifdef USE_INFINITE_REPEAT_MONOMANIAC_MEM_STATUS_CHECK
case OP_NULL_CHECK_END_MEMST: STAT_OP_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;
}
}
STAT_OP_OUT;
continue;
break;
#endif
#ifdef USE_SUBEXP_CALL
case OP_NULL_CHECK_END_MEMST_PUSH:
STAT_OP_IN(OP_NULL_CHECK_END_MEMST_PUSH);
{
int isnull;
GET_MEMNUM_INC(mem, p); /* mem: null check id */
#ifdef USE_INFINITE_REPEAT_MONOMANIAC_MEM_STATUS_CHECK
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);
}
}
STAT_OP_OUT;
continue;
break;
#endif
case OP_JUMP: STAT_OP_IN(OP_JUMP);
GET_RELADDR_INC(addr, p);
p += addr;
STAT_OP_OUT;
continue;
break;
case OP_PUSH: STAT_OP_IN(OP_PUSH);
GET_RELADDR_INC(addr, p);
STACK_PUSH_ALT(p + addr, s, sprev);
STAT_OP_OUT;
continue;
break;
case OP_POP: STAT_OP_IN(OP_POP);
STACK_POP_ONE;
STAT_OP_OUT;
continue;
break;
case OP_PUSH_OR_JUMP_EXACT1: STAT_OP_IN(OP_PUSH_OR_JUMP_EXACT1);
GET_RELADDR_INC(addr, p);
if (*p == *s && DATA_ENSURE_CHECK(1)) {
p++;
STACK_PUSH_ALT(p + addr, s, sprev);
STAT_OP_OUT;
continue;
}
p += (addr + 1);
STAT_OP_OUT;
continue;
break;
case OP_PUSH_IF_PEEK_NEXT: STAT_OP_IN(OP_PUSH_IF_PEEK_NEXT);
GET_RELADDR_INC(addr, p);
if (*p == *s) {
p++;
STACK_PUSH_ALT(p + addr, s, sprev);
STAT_OP_OUT;
continue;
}
p++;
STAT_OP_OUT;
continue;
break;
case OP_REPEAT: STAT_OP_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);
}
}
STAT_OP_OUT;
continue;
break;
case OP_REPEAT_NG: STAT_OP_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;
}
}
STAT_OP_OUT;
continue;
break;
case OP_REPEAT_INC: STAT_OP_IN(OP_REPEAT_INC);
{
StackIndex si;
GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */
#ifdef USE_SUBEXP_CALL
if (reg->num_call > 0) {
STACK_GET_REPEAT(mem, stkp);
si = GET_STACK_INDEX(stkp);
}
else {
si = repeat_stk[mem];
stkp = STACK_AT(si);
}
#else
si = repeat_stk[mem];
stkp = STACK_AT(si);
#endif
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 = stkp->u.repeat.pcode;
}
else {
p = stkp->u.repeat.pcode;
}
STACK_PUSH_REPEAT_INC(si);
}
STAT_OP_OUT;
continue;
break;
case OP_REPEAT_INC_NG: STAT_OP_IN(OP_REPEAT_INC_NG);
{
StackIndex si;
GET_MEMNUM_INC(mem, p); /* mem: OP_REPEAT ID */
#ifdef USE_SUBEXP_CALL
if (reg->num_call > 0) {
STACK_GET_REPEAT(mem, stkp);
si = GET_STACK_INDEX(stkp);
}
else {
si = repeat_stk[mem];
stkp = STACK_AT(si);
}
#else
si = repeat_stk[mem];
stkp = STACK_AT(si);
#endif
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);
}
}
STAT_OP_OUT;
continue;
break;
case OP_PUSH_POS: STAT_OP_IN(OP_PUSH_POS);
STACK_PUSH_POS(s, sprev);
STAT_OP_OUT;
continue;
break;
case OP_POP_POS: STAT_OP_IN(OP_POP_POS);
{
STACK_POS_END(stkp);
s = stkp->u.state.pstr;
sprev = stkp->u.state.pstr_prev;
}
STAT_OP_OUT;
continue;
break;
case OP_PUSH_POS_NOT: STAT_OP_IN(OP_PUSH_POS_NOT);
GET_RELADDR_INC(addr, p);
STACK_PUSH_POS_NOT(p + addr, s, sprev);
STAT_OP_OUT;
continue;
break;
case OP_FAIL_POS: STAT_OP_IN(OP_FAIL_POS);
STACK_POP_TIL_POS_NOT;
goto fail;
break;
case OP_PUSH_STOP_BT: STAT_OP_IN(OP_PUSH_STOP_BT);
STACK_PUSH_STOP_BT;
STAT_OP_OUT;
continue;
break;
case OP_POP_STOP_BT: STAT_OP_IN(OP_POP_STOP_BT);
STACK_STOP_BT_END;
STAT_OP_OUT;
continue;
break;
case OP_LOOK_BEHIND: STAT_OP_IN(OP_LOOK_BEHIND);
GET_LENGTH_INC(tlen, p);
s = ONIGENC_STEP_BACK(encode, str, s, (int )tlen);
if (IS_NULL(s)) goto fail;
sprev = onigenc_get_prev_char_head(encode, str, s);
STAT_OP_OUT;
continue;
break;
case OP_PUSH_LOOK_BEHIND_NOT: STAT_OP_IN(OP_PUSH_LOOK_BEHIND_NOT);
GET_RELADDR_INC(addr, p);
GET_LENGTH_INC(tlen, p);
q = 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 = onigenc_get_prev_char_head(encode, str, s);
}
STAT_OP_OUT;
continue;
break;
case OP_FAIL_LOOK_BEHIND_NOT: STAT_OP_IN(OP_FAIL_LOOK_BEHIND_NOT);
STACK_POP_TIL_LOOK_BEHIND_NOT;
goto fail;
break;
#ifdef USE_SUBEXP_CALL
case OP_CALL: STAT_OP_IN(OP_CALL);
GET_ABSADDR_INC(addr, p);
STACK_PUSH_CALL_FRAME(p);
p = reg->p + addr;
STAT_OP_OUT;
continue;
break;
case OP_RETURN: STAT_OP_IN(OP_RETURN);
STACK_RETURN(p);
STACK_PUSH_RETURN;
STAT_OP_OUT;
continue;
break;
#endif
case OP_FINISH:
goto finish;
break;
fail:
STAT_OP_OUT;
/* fall */
case OP_FAIL: STAT_OP_IN(OP_FAIL);
STACK_POP;
p = stk->u.state.pcode;
s = stk->u.state.pstr;
sprev = stk->u.state.pstr_prev;
STAT_OP_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,
UChar* text, UChar* text_end, UChar* text_range)
{
UChar *t, *p, *s, *end;
end = text_end - (target_end - target) + 1;
if (end > text_range)
end = text_range;
s = 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 += enc_len(enc, *s);
}
return (UChar* )NULL;
}
#if 0
static int
str_trans_match_after_head_byte(OnigEncoding enc,
int len, UChar* t, UChar* tend, UChar* p)
{
while (--len > 0) {
if (*t != *p) break;
t++; p++;
}
if (len == 0) {
int lowlen;
UChar *q, lowbuf[ONIGENC_MBC_TO_LOWER_MAXLEN];
while (t < tend) {
len = enc_len(enc, *p);
lowlen = ONIGENC_MBC_TO_LOWER(enc, p, lowbuf);
q = lowbuf;
while (lowlen > 0) {
if (*t++ != *q++) break;
lowlen--;
}
if (lowlen > 0) break;
p += len;
}
if (t == tend)
return 1;
}
return 0;
}
#endif
static int
str_lower_case_match(OnigEncoding enc, UChar* t, UChar* tend, UChar* p)
{
int len, lowlen;
UChar *q, lowbuf[ONIGENC_MBC_TO_LOWER_MAXLEN];
while (t < tend) {
len = enc_len(enc, *p);
lowlen = ONIGENC_MBC_TO_LOWER(enc, p, lowbuf);
q = lowbuf;
while (lowlen > 0) {
if (*t++ != *q++) return 0;
lowlen--;
}
p += len;
}
return 1;
}
static UChar*
slow_search_ic(OnigEncoding enc,
UChar* target, UChar* target_end,
UChar* text, UChar* text_end, UChar* text_range)
{
int len, lowlen;
UChar *t, *p, *s, *end;
UChar lowbuf[ONIGENC_MBC_TO_LOWER_MAXLEN];
end = text_end - (target_end - target) + 1;
if (end > text_range)
end = text_range;
s = text;
while (s < end) {
len = enc_len(enc, *s);
lowlen = ONIGENC_MBC_TO_LOWER(enc, s, lowbuf);
if (*target == *lowbuf) {
p = lowbuf + 1;
t = target + 1;
while (--lowlen > 0) {
if (*p != *t) break;
p++; *t++;
}
if (lowlen == 0) {
if (str_lower_case_match(enc, t, target_end, s + len))
return s;
}
}
s += len;
}
return (UChar* )NULL;
}
static UChar*
slow_search_backward(OnigEncoding enc, UChar* target, UChar* target_end,
UChar* text, UChar* adjust_text, UChar* text_end, UChar* text_start)
{
UChar *t, *p, *s;
s = text_end - (target_end - target);
if (s > text_start)
s = 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 = onigenc_get_prev_char_head(enc, adjust_text, s);
}
return (UChar* )NULL;
}
static UChar*
slow_search_backward_ic(OnigEncoding enc,
UChar* target,UChar* target_end,
UChar* text, UChar* adjust_text,
UChar* text_end, UChar* text_start)
{
int len, lowlen;
UChar *t, *p, *s;
UChar lowbuf[ONIGENC_MBC_TO_LOWER_MAXLEN];
s = text_end - (target_end - target);
if (s > text_start)
s = text_start;
else
s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, adjust_text, s);
while (s >= text) {
len = enc_len(enc, *s);
lowlen = ONIGENC_MBC_TO_LOWER(enc, s, lowbuf);
if (*target == *lowbuf) {
p = lowbuf + 1;
t = target + 1;
while (--lowlen > 0) {
if (*p != *t) break;
p++; *t++;
}
if (lowlen == 0) {
if (str_lower_case_match(enc, t, target_end, s + len))
return s;
}
}
s = onigenc_get_prev_char_head(enc, adjust_text, s);
}
return (UChar* )NULL;
}
static UChar*
bm_search_notrev(regex_t* reg, UChar* target, UChar* target_end,
UChar* text, UChar* text_end, UChar* text_range)
{
UChar *s, *t, *p, *end;
UChar *tail;
int skip;
end = text_range + (target_end - target) - 1;
if (end > text_end)
end = text_end;
tail = target_end - 1;
s = text;
while ((s - text) < target_end - target) {
s += enc_len(reg->enc, *s);
}
s--; /* set to text check tail position. */
if (IS_NULL(reg->int_map)) {
while (s < end) {
p = s;
t = tail;
while (t >= target && *p == *t) {
p--; t--;
}
if (t < target) return p + 1;
skip = reg->map[*s];
p = s + 1;
if (p >= text_end) return (UChar* )NULL;
t = p;
do {
p += enc_len(reg->enc, *p);
} while ((p - t) < skip && p < text_end);
s += (p - t);
}
}
else {
while (s < end) {
p = s;
t = tail;
while (t >= target && *p == *t) {
p--; t--;
}
if (t < target) return p + 1;
skip = reg->int_map[*s];
p = s + 1;
if (p >= text_end) return (UChar* )NULL;
t = p;
do {
p += enc_len(reg->enc, *p);
} while ((p - t) < skip && p < text_end);
s += (p - t);
}
}
return (UChar* )NULL;
}
static UChar*
bm_search(regex_t* reg, UChar* target, UChar* target_end,
UChar* text, UChar* text_end, UChar* text_range)
{
UChar *s, *t, *p, *end;
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 (t >= target && *p == *t) {
p--; t--;
}
if (t < target) return p + 1;
s += reg->map[*s];
}
}
else { /* see int_map[] */
while (s < end) {
p = s;
t = tail;
while (t >= target && *p == *t) {
p--; t--;
}
if (t < target) return p + 1;
s += reg->int_map[*s];
}
}
return (UChar* )NULL;
}
static int
set_bm_backward_skip(UChar* s, UChar* end, OnigEncoding enc,
int ignore_case, int** skip)
{
int i, len;
UChar lowbuf[ONIGENC_MBC_TO_LOWER_MAXLEN];
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;
if (ignore_case) {
for (i = len - 1; i > 0; i--) {
ONIGENC_MBC_TO_LOWER(enc, &(s[i]), lowbuf);
(*skip)[*lowbuf] = i;
}
}
else {
for (i = len - 1; i > 0; i--)
(*skip)[s[i]] = i;
}
return 0;
}
static UChar*
bm_search_backward(regex_t* reg, UChar* target, UChar* target_end, UChar* text,
UChar* adjust_text, UChar* text_end, UChar* text_start)
{
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 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[], UChar* text, UChar* text_range)
{
UChar *s = text;
while (s < text_range) {
if (map[*s]) return s;
s += enc_len(enc, *s);
}
return (UChar* )NULL;
}
static UChar*
map_search_backward(OnigEncoding enc, UChar map[],
UChar* text, UChar* adjust_text, UChar* text_start)
{
UChar *s = text_start;
while (s >= text) {
if (map[*s]) return s;
s = onigenc_get_prev_char_head(enc, adjust_text, s);
}
return (UChar* )NULL;
}
extern int
onig_match(regex_t* reg, UChar* str, UChar* end, UChar* at, OnigRegion* region,
OnigOptionType option)
{
int r;
UChar *prev;
MatchArg msa;
MATCH_ARG_INIT(msa, option, region, at);
if (region
#ifdef USE_POSIX_REGION_OPTION
&& !IS_POSIX_REGION(option)
#endif
) {
r = onig_region_resize(region, reg->num_mem + 1);
}
else
r = 0;
if (r == 0) {
prev = onigenc_get_prev_char_head(reg->enc, str, at);
r = match_at(reg, str, end, at, prev, &msa);
}
MATCH_ARG_FREE(msa);
return r;
}
static int
forward_search_range(regex_t* reg, UChar* str, 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 += enc_len(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->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 += enc_len(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 (!ONIG_IS_NEWLINE(*prev))
goto retry_gate;
}
break;
case ANCHOR_END_LINE:
if (ON_STR_END(p)) {
prev = onigenc_get_prev_char_head(reg->enc,
(pprev ? pprev : str), p);
if (prev && ONIG_IS_NEWLINE(*prev))
goto retry_gate;
}
else if (!ONIG_IS_NEWLINE(*p))
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, 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 ignore_case, int** skip));
#define BM_BACKWARD_SEARCH_LENGTH_THRESHOLD 100
static int
backward_search_range(regex_t* reg, UChar* str, UChar* end, UChar* s,
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->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, 0,
&(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, adjrange, p);
if (!ONIG_IS_NEWLINE(*prev)) {
p = prev;
goto retry;
}
}
break;
case ANCHOR_END_LINE:
if (ON_STR_END(p)) {
prev = onigenc_get_prev_char_head(reg->enc, adjrange, p);
if (IS_NULL(prev)) goto fail;
if (ONIG_IS_NEWLINE(*prev)) {
p = prev;
goto retry;
}
}
else if (!ONIG_IS_NEWLINE(*p)) {
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, UChar* str, UChar* end,
UChar* start, UChar* range, OnigRegion* region, OnigOptionType option)
{
int r;
UChar *s, *prev;
MatchArg msa;
if (ONIG_STATE(reg) == ONIG_STATE_NORMAL) {
reg->state++; /* increment as search counter */
if (IS_NOT_NULL(reg->chain)) {
onig_chain_reduce(reg);
reg->state++;
}
}
else {
int n = 0;
while (ONIG_STATE(reg) < ONIG_STATE_NORMAL) {
if (++n > THREAD_PASS_LIMIT_COUNT)
return ONIGERR_OVER_THREAD_PASS_LIMIT_COUNT;
THREAD_PASS;
}
reg->state++; /* increment as search counter */
}
#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_REGION_OPTION
&& !IS_POSIX_REGION(option)
#endif
) {
r = onig_region_resize(region, reg->num_mem + 1);
if (r) goto finish_no_msa;
}
if (start > end || start < str) goto mismatch_no_msa;
#define MATCH_AND_RETURN_CHECK \
r = match_at(reg, str, end, s, prev, &msa);\
if (r != ONIG_MISMATCH) {\
if (r >= 0) goto match;\
goto finish; /* error */ \
}
/* anchor optimize: resume search range */
if (reg->anchor != 0 && str < end) {
UChar* 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) {
semi_end = end;
end_buf:
if ((OnigDistance )(semi_end - str) < reg->anchor_dmin)
goto mismatch_no_msa;
if (range > start) {
if ((OnigDistance )(semi_end - start) > reg->anchor_dmax) {
start = 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 )(semi_end - (range - 1)) < reg->anchor_dmin) {
range = semi_end - reg->anchor_dmin + 1;
}
if (start >= range) goto mismatch_no_msa;
}
else {
if ((OnigDistance )(semi_end - range) > reg->anchor_dmax) {
range = semi_end - reg->anchor_dmax;
}
if ((OnigDistance )(semi_end - start) < reg->anchor_dmin) {
start = 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) {
if (ONIG_IS_NEWLINE(end[-1])) {
semi_end = end - 1;
if (semi_end > str && start <= semi_end) {
goto end_buf;
}
}
else {
semi_end = end;
goto end_buf;
}
}
else if ((reg->anchor & ANCHOR_ANYCHAR_STAR_PL)) {
goto begin_position;
}
}
else if (str == end) { /* empty string */
static UChar* address_for_empty_string = "";
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "onig_search: empty string.\n");
#endif
if (reg->threshold_len == 0) {
s = start = end = str = address_for_empty_string;
prev = (UChar* )NULL;
MATCH_ARG_INIT(msa, option, region, start);
MATCH_AND_RETURN_CHECK;
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, start);
s = 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 = range;
if (reg->dmax != 0) {
if (reg->dmax == ONIG_INFINITE_DISTANCE)
sch_range = end;
else {
sch_range += reg->dmax;
if (sch_range > end) sch_range = end;
}
}
if (reg->dmax != ONIG_INFINITE_DISTANCE &&
(end - start) >= reg->threshold_len) {
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;
prev = s;
s += enc_len(reg->enc, *s);
}
if ((reg->anchor & ANCHOR_ANYCHAR_STAR) != 0) {
if (IS_NOT_NULL(prev)) {
while (!ONIG_IS_NEWLINE(*prev) && s < range) {
prev = s;
s += enc_len(reg->enc, *s);
}
}
}
} while (s < range);
goto mismatch;
}
else { /* check only. */
if ((end - start) < reg->threshold_len ||
! forward_search_range(reg, str, end, s, sch_range,
&low, &high, (UChar** )NULL)) goto mismatch;
}
}
do {
MATCH_AND_RETURN_CHECK;
prev = s;
s += enc_len(reg->enc, *s);
} while (s <= range); /* exec s == range, because empty match with /$/. */
}
else { /* backward search */
if (reg->optimize != ONIG_OPTIMIZE_NONE) {
UChar *low, *high, *adjrange, *sch_start;
adjrange = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, str, range);
if (reg->dmax != ONIG_INFINITE_DISTANCE &&
(end - range) >= reg->threshold_len) {
do {
sch_start = s + reg->dmax;
if (sch_start > end) sch_start = 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;
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 = end;
else {
sch_start += reg->dmax;
if (sch_start > end) sch_start = 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;
s = prev;
} while (s >= range);
}
mismatch:
r = ONIG_MISMATCH;
finish:
MATCH_ARG_FREE(msa);
reg->state--; /* decrement as search counter */
/* 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_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:
reg->state--; /* decrement as search counter */
#ifdef ONIG_DEBUG
if (r != ONIG_MISMATCH)
fprintf(stderr, "onig_search: error %d\n", r);
#endif
return r;
match:
reg->state--; /* decrement as search counter */
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 OnigSyntaxType*
onig_get_syntax(regex_t* reg)
{
return reg->syntax;
}
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