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-rw-r--r--regparse.c5554
1 files changed, 0 insertions, 5554 deletions
diff --git a/regparse.c b/regparse.c
deleted file mode 100644
index bf72300..0000000
--- a/regparse.c
+++ /dev/null
@@ -1,5554 +0,0 @@
-/**********************************************************************
- regparse.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 "regparse.h"
-#include "st.h"
-
-#define WARN_BUFSIZE 256
-
-#define CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS
-
-
-OnigSyntaxType OnigSyntaxRuby = {
- (( SYN_GNU_REGEX_OP | ONIG_SYN_OP_QMARK_NON_GREEDY |
- ONIG_SYN_OP_ESC_OCTAL3 | ONIG_SYN_OP_ESC_X_HEX2 |
- ONIG_SYN_OP_ESC_X_BRACE_HEX8 | ONIG_SYN_OP_ESC_CONTROL_CHARS |
- ONIG_SYN_OP_ESC_C_CONTROL )
- & ~ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END )
- , ( ONIG_SYN_OP2_QMARK_GROUP_EFFECT |
- ONIG_SYN_OP2_OPTION_RUBY |
- ONIG_SYN_OP2_QMARK_LT_NAMED_GROUP | ONIG_SYN_OP2_ESC_K_NAMED_BACKREF |
- ONIG_SYN_OP2_ESC_G_SUBEXP_CALL |
- ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY |
- ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT |
- ONIG_SYN_OP2_PLUS_POSSESSIVE_REPEAT |
- ONIG_SYN_OP2_CCLASS_SET_OP | ONIG_SYN_OP2_ESC_CAPITAL_C_BAR_CONTROL |
- ONIG_SYN_OP2_ESC_CAPITAL_M_BAR_META | ONIG_SYN_OP2_ESC_V_VTAB |
- ONIG_SYN_OP2_ESC_H_XDIGIT )
- , ( SYN_GNU_REGEX_BV |
- ONIG_SYN_ALLOW_INTERVAL_LOW_ABBREV |
- ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND |
- ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP |
- ONIG_SYN_ALLOW_MULTIPLEX_DEFINITION_NAME |
- ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY |
- ONIG_SYN_WARN_CC_OP_NOT_ESCAPED |
- ONIG_SYN_WARN_REDUNDANT_NESTED_REPEAT )
- , ONIG_OPTION_NONE
- ,
- {
- (OnigCodePoint )'\\' /* esc */
- , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar '.' */
- , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anytime '*' */
- , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* zero or one time '?' */
- , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* one or more time '+' */
- , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar anytime */
- }
-};
-
-OnigSyntaxType* OnigDefaultSyntax = ONIG_SYNTAX_RUBY;
-
-extern void onig_null_warn(const char* s ARG_UNUSED) { }
-
-#ifdef DEFAULT_WARN_FUNCTION
-static OnigWarnFunc onig_warn = (OnigWarnFunc )DEFAULT_WARN_FUNCTION;
-#else
-static OnigWarnFunc onig_warn = onig_null_warn;
-#endif
-
-#ifdef DEFAULT_VERB_WARN_FUNCTION
-static OnigWarnFunc onig_verb_warn = (OnigWarnFunc )DEFAULT_VERB_WARN_FUNCTION;
-#else
-static OnigWarnFunc onig_verb_warn = onig_null_warn;
-#endif
-
-extern void onig_set_warn_func(OnigWarnFunc f)
-{
- onig_warn = f;
-}
-
-extern void onig_set_verb_warn_func(OnigWarnFunc f)
-{
- onig_verb_warn = f;
-}
-
-static void
-bbuf_free(BBuf* bbuf)
-{
- if (IS_NOT_NULL(bbuf)) {
- if (IS_NOT_NULL(bbuf->p)) xfree(bbuf->p);
- xfree(bbuf);
- }
-}
-
-static int
-bbuf_clone(BBuf** rto, BBuf* from)
-{
- int r;
- BBuf *to;
-
- *rto = to = (BBuf* )xmalloc(sizeof(BBuf));
- CHECK_NULL_RETURN_MEMERR(to);
- r = BBUF_INIT(to, from->alloc);
- if (r != 0) return r;
- to->used = from->used;
- xmemcpy(to->p, from->p, from->used);
- return 0;
-}
-
-#define BACKREF_REL_TO_ABS(rel_no, env) \
- ((env)->num_mem + 1 + (rel_no))
-
-#define ONOFF(v,f,negative) (negative) ? ((v) &= ~(f)) : ((v) |= (f))
-
-#define MBCODE_START_POS(enc) \
- (OnigCodePoint )(ONIGENC_MBC_MINLEN(enc) > 1 ? 0 : 0x80)
-
-#define SET_ALL_MULTI_BYTE_RANGE(enc, pbuf) \
- add_code_range_to_buf(pbuf, MBCODE_START_POS(enc), ~((OnigCodePoint )0))
-
-#define ADD_ALL_MULTI_BYTE_RANGE(enc, mbuf) do {\
- if (! ONIGENC_IS_SINGLEBYTE(enc)) {\
- r = SET_ALL_MULTI_BYTE_RANGE(enc, &(mbuf));\
- if (r) return r;\
- }\
-} while (0)
-
-
-#define BITSET_IS_EMPTY(bs,empty) do {\
- int i;\
- empty = 1;\
- for (i = 0; i < (int )BITSET_SIZE; i++) {\
- if ((bs)[i] != 0) {\
- empty = 0; break;\
- }\
- }\
-} while (0)
-
-static void
-bitset_set_range(BitSetRef bs, int from, int to)
-{
- int i;
- for (i = from; i <= to && i < SINGLE_BYTE_SIZE; i++) {
- BITSET_SET_BIT(bs, i);
- }
-}
-
-#if 0
-static void
-bitset_set_all(BitSetRef bs)
-{
- int i;
- for (i = 0; i < BITSET_SIZE; i++) { bs[i] = ~((Bits )0); }
-}
-#endif
-
-static void
-bitset_invert(BitSetRef bs)
-{
- int i;
- for (i = 0; i < (int )BITSET_SIZE; i++) { bs[i] = ~(bs[i]); }
-}
-
-static void
-bitset_invert_to(BitSetRef from, BitSetRef to)
-{
- int i;
- for (i = 0; i < (int )BITSET_SIZE; i++) { to[i] = ~(from[i]); }
-}
-
-static void
-bitset_and(BitSetRef dest, BitSetRef bs)
-{
- int i;
- for (i = 0; i < (int )BITSET_SIZE; i++) { dest[i] &= bs[i]; }
-}
-
-static void
-bitset_or(BitSetRef dest, BitSetRef bs)
-{
- int i;
- for (i = 0; i < (int )BITSET_SIZE; i++) { dest[i] |= bs[i]; }
-}
-
-static void
-bitset_copy(BitSetRef dest, BitSetRef bs)
-{
- int i;
- for (i = 0; i < (int )BITSET_SIZE; i++) { dest[i] = bs[i]; }
-}
-
-extern int
-onig_strncmp(const UChar* s1, const UChar* s2, int n)
-{
- int x;
-
- while (n-- > 0) {
- x = *s2++ - *s1++;
- if (x) return x;
- }
- return 0;
-}
-
-extern void
-onig_strcpy(UChar* dest, const UChar* src, const UChar* end)
-{
- int len = end - src;
- if (len > 0) {
- xmemcpy(dest, src, len);
- dest[len] = (UChar )0;
- }
-}
-
-#ifdef USE_NAMED_GROUP
-static UChar*
-strdup_with_null(OnigEncoding enc, UChar* s, UChar* end)
-{
- int slen, term_len, i;
- UChar *r;
-
- slen = end - s;
- term_len = ONIGENC_MBC_MINLEN(enc);
-
- r = (UChar* )xmalloc(slen + term_len);
- CHECK_NULL_RETURN(r);
- xmemcpy(r, s, slen);
-
- for (i = 0; i < term_len; i++)
- r[slen + i] = (UChar )0;
-
- return r;
-}
-#endif
-
-/* scan pattern methods */
-#define PEND_VALUE 0
-
-#define PFETCH_READY UChar* pfetch_prev
-#define PEND (p < end ? 0 : 1)
-#define PUNFETCH p = pfetch_prev
-#define PINC do { \
- pfetch_prev = p; \
- p += ONIGENC_MBC_ENC_LEN(enc, p); \
-} while (0)
-#define PFETCH(c) do { \
- c = ONIGENC_MBC_TO_CODE(enc, p, end); \
- pfetch_prev = p; \
- p += ONIGENC_MBC_ENC_LEN(enc, p); \
-} while (0)
-
-#define PINC_S do { \
- p += ONIGENC_MBC_ENC_LEN(enc, p); \
-} while (0)
-#define PFETCH_S(c) do { \
- c = ONIGENC_MBC_TO_CODE(enc, p, end); \
- p += ONIGENC_MBC_ENC_LEN(enc, p); \
-} while (0)
-
-#define PPEEK (p < end ? ONIGENC_MBC_TO_CODE(enc, p, end) : PEND_VALUE)
-#define PPEEK_IS(c) (PPEEK == (OnigCodePoint )c)
-
-static UChar*
-strcat_capa(UChar* dest, UChar* dest_end, const UChar* src, const UChar* src_end,
- int capa)
-{
- UChar* r;
-
- if (dest)
- r = (UChar* )xrealloc(dest, capa + 1);
- else
- r = (UChar* )xmalloc(capa + 1);
-
- CHECK_NULL_RETURN(r);
- onig_strcpy(r + (dest_end - dest), src, src_end);
- return r;
-}
-
-/* dest on static area */
-static UChar*
-strcat_capa_from_static(UChar* dest, UChar* dest_end,
- const UChar* src, const UChar* src_end, int capa)
-{
- UChar* r;
-
- r = (UChar* )xmalloc(capa + 1);
- CHECK_NULL_RETURN(r);
- onig_strcpy(r, dest, dest_end);
- onig_strcpy(r + (dest_end - dest), src, src_end);
- return r;
-}
-
-
-#ifdef USE_ST_LIBRARY
-
-typedef struct {
- UChar* s;
- UChar* end;
-} st_str_end_key;
-
-static int
-str_end_cmp(st_str_end_key* x, st_str_end_key* y)
-{
- UChar *p, *q;
- int c;
-
- if ((x->end - x->s) != (y->end - y->s))
- return 1;
-
- p = x->s;
- q = y->s;
- while (p < x->end) {
- c = (int )*p - (int )*q;
- if (c != 0) return c;
-
- p++; q++;
- }
-
- return 0;
-}
-
-static int
-str_end_hash(st_str_end_key* x)
-{
- UChar *p;
- int val = 0;
-
- p = x->s;
- while (p < x->end) {
- val = val * 997 + (int )*p++;
- }
-
- return val + (val >> 5);
-}
-
-extern hash_table_type*
-onig_st_init_strend_table_with_size(int size)
-{
- static struct st_hash_type hashType = {
- str_end_cmp,
- str_end_hash,
- };
-
- return (hash_table_type* )
- onig_st_init_table_with_size(&hashType, size);
-}
-
-extern int
-onig_st_lookup_strend(hash_table_type* table, const UChar* str_key,
- const UChar* end_key, hash_data_type *value)
-{
- st_str_end_key key;
-
- key.s = (UChar* )str_key;
- key.end = (UChar* )end_key;
-
- return onig_st_lookup(table, (st_data_t )(&key), value);
-}
-
-extern int
-onig_st_insert_strend(hash_table_type* table, const UChar* str_key,
- const UChar* end_key, hash_data_type value)
-{
- st_str_end_key* key;
- int result;
-
- key = (st_str_end_key* )xmalloc(sizeof(st_str_end_key));
- key->s = (UChar* )str_key;
- key->end = (UChar* )end_key;
- result = onig_st_insert(table, (st_data_t )key, value);
- if (result) {
- xfree(key);
- }
- return result;
-}
-
-#endif /* USE_ST_LIBRARY */
-
-
-#ifdef USE_NAMED_GROUP
-
-#define INIT_NAME_BACKREFS_ALLOC_NUM 8
-
-typedef struct {
- UChar* name;
- int name_len; /* byte length */
- int back_num; /* number of backrefs */
- int back_alloc;
- int back_ref1;
- int* back_refs;
-} NameEntry;
-
-#ifdef USE_ST_LIBRARY
-
-typedef st_table NameTable;
-typedef st_data_t HashDataType; /* 1.6 st.h doesn't define st_data_t type */
-
-#define NAMEBUF_SIZE 24
-#define NAMEBUF_SIZE_1 25
-
-#ifdef ONIG_DEBUG
-static int
-i_print_name_entry(UChar* key, NameEntry* e, void* arg)
-{
- int i;
- FILE* fp = (FILE* )arg;
-
- fprintf(fp, "%s: ", e->name);
- if (e->back_num == 0)
- fputs("-", fp);
- else if (e->back_num == 1)
- fprintf(fp, "%d", e->back_ref1);
- else {
- for (i = 0; i < e->back_num; i++) {
- if (i > 0) fprintf(fp, ", ");
- fprintf(fp, "%d", e->back_refs[i]);
- }
- }
- fputs("\n", fp);
- return ST_CONTINUE;
-}
-
-extern int
-onig_print_names(FILE* fp, regex_t* reg)
-{
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t)) {
- fprintf(fp, "name table\n");
- onig_st_foreach(t, i_print_name_entry, (HashDataType )fp);
- fputs("\n", fp);
- }
- return 0;
-}
-#endif /* ONIG_DEBUG */
-
-static int
-i_free_name_entry(UChar* key, NameEntry* e, void* arg ARG_UNUSED)
-{
- xfree(e->name);
- if (IS_NOT_NULL(e->back_refs)) xfree(e->back_refs);
- xfree(key);
- xfree(e);
- return ST_DELETE;
-}
-
-static int
-names_clear(regex_t* reg)
-{
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t)) {
- onig_st_foreach(t, i_free_name_entry, 0);
- }
- return 0;
-}
-
-extern int
-onig_names_free(regex_t* reg)
-{
- int r;
- NameTable* t;
-
- r = names_clear(reg);
- if (r) return r;
-
- t = (NameTable* )reg->name_table;
- if (IS_NOT_NULL(t)) onig_st_free_table(t);
- reg->name_table = (void* )NULL;
- return 0;
-}
-
-static NameEntry*
-name_find(regex_t* reg, const UChar* name, const UChar* name_end)
-{
- NameEntry* e;
- NameTable* t = (NameTable* )reg->name_table;
-
- e = (NameEntry* )NULL;
- if (IS_NOT_NULL(t)) {
- onig_st_lookup_strend(t, name, name_end, (HashDataType* )((void* )(&e)));
- }
- return e;
-}
-
-typedef struct {
- int (*func)(const UChar*, const UChar*,int,int*,regex_t*,void*);
- regex_t* reg;
- void* arg;
- int ret;
- OnigEncoding enc;
-} INamesArg;
-
-static int
-i_names(UChar* key ARG_UNUSED, NameEntry* e, INamesArg* arg)
-{
- int r = (*(arg->func))(e->name,
- e->name + e->name_len,
- e->back_num,
- (e->back_num > 1 ? e->back_refs : &(e->back_ref1)),
- arg->reg, arg->arg);
- if (r != 0) {
- arg->ret = r;
- return ST_STOP;
- }
- return ST_CONTINUE;
-}
-
-extern int
-onig_foreach_name(regex_t* reg,
- int (*func)(const UChar*, const UChar*,int,int*,regex_t*,void*), void* arg)
-{
- INamesArg narg;
- NameTable* t = (NameTable* )reg->name_table;
-
- narg.ret = 0;
- if (IS_NOT_NULL(t)) {
- narg.func = func;
- narg.reg = reg;
- narg.arg = arg;
- narg.enc = reg->enc; /* should be pattern encoding. */
- onig_st_foreach(t, i_names, (HashDataType )&narg);
- }
- return narg.ret;
-}
-
-static int
-i_renumber_name(UChar* key ARG_UNUSED, NameEntry* e, GroupNumRemap* map)
-{
- int i;
-
- if (e->back_num > 1) {
- for (i = 0; i < e->back_num; i++) {
- e->back_refs[i] = map[e->back_refs[i]].new_val;
- }
- }
- else if (e->back_num == 1) {
- e->back_ref1 = map[e->back_ref1].new_val;
- }
-
- return ST_CONTINUE;
-}
-
-extern int
-onig_renumber_name_table(regex_t* reg, GroupNumRemap* map)
-{
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t)) {
- onig_st_foreach(t, i_renumber_name, (HashDataType )map);
- }
- return 0;
-}
-
-
-extern int
-onig_number_of_names(regex_t* reg)
-{
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t))
- return t->num_entries;
- else
- return 0;
-}
-
-#else /* USE_ST_LIBRARY */
-
-#define INIT_NAMES_ALLOC_NUM 8
-
-typedef struct {
- NameEntry* e;
- int num;
- int alloc;
-} NameTable;
-
-#ifdef ONIG_DEBUG
-extern int
-onig_print_names(FILE* fp, regex_t* reg)
-{
- int i, j;
- NameEntry* e;
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t) && t->num > 0) {
- fprintf(fp, "name table\n");
- for (i = 0; i < t->num; i++) {
- e = &(t->e[i]);
- fprintf(fp, "%s: ", e->name);
- if (e->back_num == 0) {
- fputs("-", fp);
- }
- else if (e->back_num == 1) {
- fprintf(fp, "%d", e->back_ref1);
- }
- else {
- for (j = 0; j < e->back_num; j++) {
- if (j > 0) fprintf(fp, ", ");
- fprintf(fp, "%d", e->back_refs[j]);
- }
- }
- fputs("\n", fp);
- }
- fputs("\n", fp);
- }
- return 0;
-}
-#endif
-
-static int
-names_clear(regex_t* reg)
-{
- int i;
- NameEntry* e;
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t)) {
- for (i = 0; i < t->num; i++) {
- e = &(t->e[i]);
- if (IS_NOT_NULL(e->name)) {
- xfree(e->name);
- e->name = NULL;
- e->name_len = 0;
- e->back_num = 0;
- e->back_alloc = 0;
- if (IS_NOT_NULL(e->back_refs)) xfree(e->back_refs);
- e->back_refs = (int* )NULL;
- }
- }
- if (IS_NOT_NULL(t->e)) {
- xfree(t->e);
- t->e = NULL;
- }
- t->num = 0;
- }
- return 0;
-}
-
-extern int
-onig_names_free(regex_t* reg)
-{
- int r;
- NameTable* t;
-
- r = names_clear(reg);
- if (r) return r;
-
- t = (NameTable* )reg->name_table;
- if (IS_NOT_NULL(t)) xfree(t);
- reg->name_table = NULL;
- return 0;
-}
-
-static NameEntry*
-name_find(regex_t* reg, UChar* name, UChar* name_end)
-{
- int i, len;
- NameEntry* e;
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t)) {
- len = name_end - name;
- for (i = 0; i < t->num; i++) {
- e = &(t->e[i]);
- if (len == e->name_len && onig_strncmp(name, e->name, len) == 0)
- return e;
- }
- }
- return (NameEntry* )NULL;
-}
-
-extern int
-onig_foreach_name(regex_t* reg,
- int (*func)(const UChar*, const UChar*,int,int*,regex_t*,void*), void* arg)
-{
- int i, r;
- NameEntry* e;
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t)) {
- for (i = 0; i < t->num; i++) {
- e = &(t->e[i]);
- r = (*func)(e->name, e->name + e->name_len, e->back_num,
- (e->back_num > 1 ? e->back_refs : &(e->back_ref1)),
- reg, arg);
- if (r != 0) return r;
- }
- }
- return 0;
-}
-
-extern int
-onig_number_of_names(regex_t* reg)
-{
- NameTable* t = (NameTable* )reg->name_table;
-
- if (IS_NOT_NULL(t))
- return t->num;
- else
- return 0;
-}
-
-#endif /* else USE_ST_LIBRARY */
-
-static int
-name_add(regex_t* reg, UChar* name, UChar* name_end, int backref, ScanEnv* env)
-{
- int alloc;
- NameEntry* e;
- NameTable* t = (NameTable* )reg->name_table;
-
- if (name_end - name <= 0)
- return ONIGERR_EMPTY_GROUP_NAME;
-
- e = name_find(reg, name, name_end);
- if (IS_NULL(e)) {
-#ifdef USE_ST_LIBRARY
- if (IS_NULL(t)) {
- t = onig_st_init_strend_table_with_size(5);
- reg->name_table = (void* )t;
- }
- e = (NameEntry* )xmalloc(sizeof(NameEntry));
- CHECK_NULL_RETURN_MEMERR(e);
-
- e->name = strdup_with_null(reg->enc, name, name_end);
- if (IS_NULL(e->name)) {
- xfree(e); return ONIGERR_MEMORY;
- }
- onig_st_insert_strend(t, e->name, (e->name + (name_end - name)),
- (HashDataType )e);
-
- e->name_len = name_end - name;
- e->back_num = 0;
- e->back_alloc = 0;
- e->back_refs = (int* )NULL;
-
-#else
-
- if (IS_NULL(t)) {
- alloc = INIT_NAMES_ALLOC_NUM;
- t = (NameTable* )xmalloc(sizeof(NameTable));
- CHECK_NULL_RETURN_MEMERR(t);
- t->e = NULL;
- t->alloc = 0;
- t->num = 0;
-
- t->e = (NameEntry* )xmalloc(sizeof(NameEntry) * alloc);
- if (IS_NULL(t->e)) {
- xfree(t);
- return ONIGERR_MEMORY;
- }
- t->alloc = alloc;
- reg->name_table = t;
- goto clear;
- }
- else if (t->num == t->alloc) {
- int i;
-
- alloc = t->alloc * 2;
- t->e = (NameEntry* )xrealloc(t->e, sizeof(NameEntry) * alloc);
- CHECK_NULL_RETURN_MEMERR(t->e);
- t->alloc = alloc;
-
- clear:
- for (i = t->num; i < t->alloc; i++) {
- t->e[i].name = NULL;
- t->e[i].name_len = 0;
- t->e[i].back_num = 0;
- t->e[i].back_alloc = 0;
- t->e[i].back_refs = (int* )NULL;
- }
- }
- e = &(t->e[t->num]);
- t->num++;
- e->name = strdup_with_null(reg->enc, name, name_end);
- if (IS_NULL(e->name)) return ONIGERR_MEMORY;
- e->name_len = name_end - name;
-#endif
- }
-
- if (e->back_num >= 1 &&
- ! IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_MULTIPLEX_DEFINITION_NAME)) {
- onig_scan_env_set_error_string(env, ONIGERR_MULTIPLEX_DEFINED_NAME,
- name, name_end);
- return ONIGERR_MULTIPLEX_DEFINED_NAME;
- }
-
- e->back_num++;
- if (e->back_num == 1) {
- e->back_ref1 = backref;
- }
- else {
- if (e->back_num == 2) {
- alloc = INIT_NAME_BACKREFS_ALLOC_NUM;
- e->back_refs = (int* )xmalloc(sizeof(int) * alloc);
- CHECK_NULL_RETURN_MEMERR(e->back_refs);
- e->back_alloc = alloc;
- e->back_refs[0] = e->back_ref1;
- e->back_refs[1] = backref;
- }
- else {
- if (e->back_num > e->back_alloc) {
- alloc = e->back_alloc * 2;
- e->back_refs = (int* )xrealloc(e->back_refs, sizeof(int) * alloc);
- CHECK_NULL_RETURN_MEMERR(e->back_refs);
- e->back_alloc = alloc;
- }
- e->back_refs[e->back_num - 1] = backref;
- }
- }
-
- return 0;
-}
-
-extern int
-onig_name_to_group_numbers(regex_t* reg, const UChar* name,
- const UChar* name_end, int** nums)
-{
- NameEntry* e = name_find(reg, name, name_end);
-
- if (IS_NULL(e)) return ONIGERR_UNDEFINED_NAME_REFERENCE;
-
- switch (e->back_num) {
- case 0:
- break;
- case 1:
- *nums = &(e->back_ref1);
- break;
- default:
- *nums = e->back_refs;
- break;
- }
- return e->back_num;
-}
-
-extern int
-onig_name_to_backref_number(regex_t* reg, const UChar* name,
- const UChar* name_end, OnigRegion *region)
-{
- int i, n, *nums;
-
- n = onig_name_to_group_numbers(reg, name, name_end, &nums);
- if (n < 0)
- return n;
- else if (n == 0)
- return ONIGERR_PARSER_BUG;
- else if (n == 1)
- return nums[0];
- else {
- if (IS_NOT_NULL(region)) {
- for (i = n - 1; i >= 0; i--) {
- if (region->beg[nums[i]] != ONIG_REGION_NOTPOS)
- return nums[i];
- }
- }
- return nums[n - 1];
- }
-}
-
-#else /* USE_NAMED_GROUP */
-
-extern int
-onig_name_to_group_numbers(regex_t* reg, const UChar* name,
- const UChar* name_end, int** nums)
-{
- return ONIG_NO_SUPPORT_CONFIG;
-}
-
-extern int
-onig_name_to_backref_number(regex_t* reg, const UChar* name,
- const UChar* name_end, OnigRegion* region)
-{
- return ONIG_NO_SUPPORT_CONFIG;
-}
-
-extern int
-onig_foreach_name(regex_t* reg,
- int (*func)(const UChar*, const UChar*,int,int*,regex_t*,void*), void* arg)
-{
- return ONIG_NO_SUPPORT_CONFIG;
-}
-
-extern int
-onig_number_of_names(regex_t* reg)
-{
- return 0;
-}
-#endif /* else USE_NAMED_GROUP */
-
-extern int
-onig_noname_group_capture_is_active(regex_t* reg)
-{
- if (ONIG_IS_OPTION_ON(reg->options, ONIG_OPTION_DONT_CAPTURE_GROUP))
- return 0;
-
-#ifdef USE_NAMED_GROUP
- if (onig_number_of_names(reg) > 0 &&
- IS_SYNTAX_BV(reg->syntax, ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP) &&
- !ONIG_IS_OPTION_ON(reg->options, ONIG_OPTION_CAPTURE_GROUP)) {
- return 0;
- }
-#endif
-
- return 1;
-}
-
-
-#define INIT_SCANENV_MEMNODES_ALLOC_SIZE 16
-
-static void
-scan_env_clear(ScanEnv* env)
-{
- int i;
-
- BIT_STATUS_CLEAR(env->capture_history);
- BIT_STATUS_CLEAR(env->bt_mem_start);
- BIT_STATUS_CLEAR(env->bt_mem_end);
- BIT_STATUS_CLEAR(env->backrefed_mem);
- env->error = (UChar* )NULL;
- env->error_end = (UChar* )NULL;
- env->num_call = 0;
- env->num_mem = 0;
-#ifdef USE_NAMED_GROUP
- env->num_named = 0;
-#endif
- env->mem_alloc = 0;
- env->mem_nodes_dynamic = (Node** )NULL;
-
- for (i = 0; i < SCANENV_MEMNODES_SIZE; i++)
- env->mem_nodes_static[i] = NULL_NODE;
-
-#ifdef USE_COMBINATION_EXPLOSION_CHECK
- env->num_comb_exp_check = 0;
- env->comb_exp_max_regnum = 0;
- env->curr_max_regnum = 0;
- env->has_recursion = 0;
-#endif
-}
-
-static int
-scan_env_add_mem_entry(ScanEnv* env)
-{
- int i, need, alloc;
- Node** p;
-
- need = env->num_mem + 1;
- if (need >= SCANENV_MEMNODES_SIZE) {
- if (env->mem_alloc <= need) {
- if (IS_NULL(env->mem_nodes_dynamic)) {
- alloc = INIT_SCANENV_MEMNODES_ALLOC_SIZE;
- p = (Node** )xmalloc(sizeof(Node*) * alloc);
- xmemcpy(p, env->mem_nodes_static,
- sizeof(Node*) * SCANENV_MEMNODES_SIZE);
- }
- else {
- alloc = env->mem_alloc * 2;
- p = (Node** )xrealloc(env->mem_nodes_dynamic, sizeof(Node*) * alloc);
- }
- CHECK_NULL_RETURN_MEMERR(p);
-
- for (i = env->num_mem + 1; i < alloc; i++)
- p[i] = NULL_NODE;
-
- env->mem_nodes_dynamic = p;
- env->mem_alloc = alloc;
- }
- }
-
- env->num_mem++;
- return env->num_mem;
-}
-
-static int
-scan_env_set_mem_node(ScanEnv* env, int num, Node* node)
-{
- if (env->num_mem >= num)
- SCANENV_MEM_NODES(env)[num] = node;
- else
- return ONIGERR_PARSER_BUG;
- return 0;
-}
-
-
-#ifdef USE_PARSE_TREE_NODE_RECYCLE
-typedef struct _FreeNode {
- struct _FreeNode* next;
-} FreeNode;
-
-static FreeNode* FreeNodeList = (FreeNode* )NULL;
-#endif
-
-extern void
-onig_node_free(Node* node)
-{
- start:
- if (IS_NULL(node)) return ;
-
- switch (NTYPE(node)) {
- case NT_STR:
- if (NSTR(node)->capa != 0 &&
- IS_NOT_NULL(NSTR(node)->s) && NSTR(node)->s != NSTR(node)->buf) {
- xfree(NSTR(node)->s);
- }
- break;
-
- case NT_LIST:
- case NT_ALT:
- onig_node_free(NCAR(node));
- {
- Node* next_node = NCDR(node);
-
-#ifdef USE_PARSE_TREE_NODE_RECYCLE
- {
- FreeNode* n = (FreeNode* )node;
-
- THREAD_ATOMIC_START;
- n->next = FreeNodeList;
- FreeNodeList = n;
- THREAD_ATOMIC_END;
- }
-#else
- xfree(node);
-#endif
- node = next_node;
- goto start;
- }
- break;
-
- case NT_CCLASS:
- {
- CClassNode* cc = NCCLASS(node);
-
- if (IS_NCCLASS_SHARE(cc)) return ;
- if (cc->mbuf)
- bbuf_free(cc->mbuf);
- }
- break;
-
- case NT_QTFR:
- if (NQTFR(node)->target)
- onig_node_free(NQTFR(node)->target);
- break;
-
- case NT_ENCLOSE:
- if (NENCLOSE(node)->target)
- onig_node_free(NENCLOSE(node)->target);
- break;
-
- case NT_BREF:
- if (IS_NOT_NULL(NBREF(node)->back_dynamic))
- xfree(NBREF(node)->back_dynamic);
- break;
-
- case NT_ANCHOR:
- if (NANCHOR(node)->target)
- onig_node_free(NANCHOR(node)->target);
- break;
- }
-
-#ifdef USE_PARSE_TREE_NODE_RECYCLE
- {
- FreeNode* n = (FreeNode* )node;
-
- THREAD_ATOMIC_START;
- n->next = FreeNodeList;
- FreeNodeList = n;
- THREAD_ATOMIC_END;
- }
-#else
- xfree(node);
-#endif
-}
-
-#ifdef USE_PARSE_TREE_NODE_RECYCLE
-extern int
-onig_free_node_list(void)
-{
- FreeNode* n;
-
- /* THREAD_ATOMIC_START; */
- while (IS_NOT_NULL(FreeNodeList)) {
- n = FreeNodeList;
- FreeNodeList = FreeNodeList->next;
- xfree(n);
- }
- /* THREAD_ATOMIC_END; */
- return 0;
-}
-#endif
-
-static Node*
-node_new(void)
-{
- Node* node;
-
-#ifdef USE_PARSE_TREE_NODE_RECYCLE
- THREAD_ATOMIC_START;
- if (IS_NOT_NULL(FreeNodeList)) {
- node = (Node* )FreeNodeList;
- FreeNodeList = FreeNodeList->next;
- THREAD_ATOMIC_END;
- return node;
- }
- THREAD_ATOMIC_END;
-#endif
-
- node = (Node* )xmalloc(sizeof(Node));
- /* xmemset(node, 0, sizeof(Node)); */
- return node;
-}
-
-
-static void
-initialize_cclass(CClassNode* cc)
-{
- BITSET_CLEAR(cc->bs);
- /* cc->base.flags = 0; */
- cc->flags = 0;
- cc->mbuf = NULL;
-}
-
-static Node*
-node_new_cclass(void)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_CCLASS);
- initialize_cclass(NCCLASS(node));
- return node;
-}
-
-static Node*
-node_new_cclass_by_codepoint_range(int not, OnigCodePoint sb_out,
- const OnigCodePoint ranges[])
-{
- int n, i;
- CClassNode* cc;
- OnigCodePoint j;
-
- Node* node = node_new_cclass();
- CHECK_NULL_RETURN(node);
-
- cc = NCCLASS(node);
- if (not != 0) NCCLASS_SET_NOT(cc);
-
- BITSET_CLEAR(cc->bs);
- if (sb_out > 0 && IS_NOT_NULL(ranges)) {
- n = ONIGENC_CODE_RANGE_NUM(ranges);
- for (i = 0; i < n; i++) {
- for (j = ONIGENC_CODE_RANGE_FROM(ranges, i);
- j <= (OnigCodePoint )ONIGENC_CODE_RANGE_TO(ranges, i); j++) {
- if (j >= sb_out) goto sb_end;
-
- BITSET_SET_BIT(cc->bs, j);
- }
- }
- }
-
- sb_end:
- if (IS_NULL(ranges)) {
- is_null:
- cc->mbuf = NULL;
- }
- else {
- BBuf* bbuf;
-
- n = ONIGENC_CODE_RANGE_NUM(ranges);
- if (n == 0) goto is_null;
-
- bbuf = (BBuf* )xmalloc(sizeof(BBuf));
- CHECK_NULL_RETURN(bbuf);
- bbuf->alloc = n + 1;
- bbuf->used = n + 1;
- bbuf->p = (UChar* )((void* )ranges);
-
- cc->mbuf = bbuf;
- }
-
- return node;
-}
-
-static Node*
-node_new_ctype(int type, int not)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_CTYPE);
- NCTYPE(node)->ctype = type;
- NCTYPE(node)->not = not;
- return node;
-}
-
-static Node*
-node_new_anychar(void)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_CANY);
- return node;
-}
-
-static Node*
-node_new_list(Node* left, Node* right)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_LIST);
- NCAR(node) = left;
- NCDR(node) = right;
- return node;
-}
-
-extern Node*
-onig_node_new_list(Node* left, Node* right)
-{
- return node_new_list(left, right);
-}
-
-extern Node*
-onig_node_list_add(Node* list, Node* x)
-{
- Node *n;
-
- n = onig_node_new_list(x, NULL);
- if (IS_NULL(n)) return NULL_NODE;
-
- if (IS_NOT_NULL(list)) {
- while (IS_NOT_NULL(NCDR(list)))
- list = NCDR(list);
-
- NCDR(list) = n;
- }
-
- return n;
-}
-
-extern Node*
-onig_node_new_alt(Node* left, Node* right)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_ALT);
- NCAR(node) = left;
- NCDR(node) = right;
- return node;
-}
-
-extern Node*
-onig_node_new_anchor(int type)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_ANCHOR);
- NANCHOR(node)->type = type;
- NANCHOR(node)->target = NULL;
- NANCHOR(node)->char_len = -1;
- return node;
-}
-
-static Node*
-node_new_backref(int back_num, int* backrefs, int by_name,
-#ifdef USE_BACKREF_WITH_LEVEL
- int exist_level, int nest_level,
-#endif
- ScanEnv* env)
-{
- int i;
- Node* node = node_new();
-
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_BREF);
- NBREF(node)->state = 0;
- NBREF(node)->back_num = back_num;
- NBREF(node)->back_dynamic = (int* )NULL;
- if (by_name != 0)
- NBREF(node)->state |= NST_NAME_REF;
-
-#ifdef USE_BACKREF_WITH_LEVEL
- if (exist_level != 0) {
- NBREF(node)->state |= NST_NEST_LEVEL;
- NBREF(node)->nest_level = nest_level;
- }
-#endif
-
- for (i = 0; i < back_num; i++) {
- if (backrefs[i] <= env->num_mem &&
- IS_NULL(SCANENV_MEM_NODES(env)[backrefs[i]])) {
- NBREF(node)->state |= NST_RECURSION; /* /...(\1).../ */
- break;
- }
- }
-
- if (back_num <= NODE_BACKREFS_SIZE) {
- for (i = 0; i < back_num; i++)
- NBREF(node)->back_static[i] = backrefs[i];
- }
- else {
- int* p = (int* )xmalloc(sizeof(int) * back_num);
- if (IS_NULL(p)) {
- onig_node_free(node);
- return NULL;
- }
- NBREF(node)->back_dynamic = p;
- for (i = 0; i < back_num; i++)
- p[i] = backrefs[i];
- }
- return node;
-}
-
-#ifdef USE_SUBEXP_CALL
-static Node*
-node_new_call(UChar* name, UChar* name_end, int gnum)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_CALL);
- NCALL(node)->state = 0;
- NCALL(node)->target = NULL_NODE;
- NCALL(node)->name = name;
- NCALL(node)->name_end = name_end;
- NCALL(node)->group_num = gnum; /* call by number if gnum != 0 */
- return node;
-}
-#endif
-
-static Node*
-node_new_quantifier(int lower, int upper, int by_number)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_QTFR);
- NQTFR(node)->state = 0;
- NQTFR(node)->target = NULL;
- NQTFR(node)->lower = lower;
- NQTFR(node)->upper = upper;
- NQTFR(node)->greedy = 1;
- NQTFR(node)->target_empty_info = NQ_TARGET_ISNOT_EMPTY;
- NQTFR(node)->head_exact = NULL_NODE;
- NQTFR(node)->next_head_exact = NULL_NODE;
- NQTFR(node)->is_refered = 0;
- if (by_number != 0)
- NQTFR(node)->state |= NST_BY_NUMBER;
-
-#ifdef USE_COMBINATION_EXPLOSION_CHECK
- NQTFR(node)->comb_exp_check_num = 0;
-#endif
-
- return node;
-}
-
-static Node*
-node_new_enclose(int type)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_ENCLOSE);
- NENCLOSE(node)->type = type;
- NENCLOSE(node)->state = 0;
- NENCLOSE(node)->regnum = 0;
- NENCLOSE(node)->option = 0;
- NENCLOSE(node)->target = NULL;
- NENCLOSE(node)->call_addr = -1;
- NENCLOSE(node)->opt_count = 0;
- return node;
-}
-
-extern Node*
-onig_node_new_enclose(int type)
-{
- return node_new_enclose(type);
-}
-
-static Node*
-node_new_enclose_memory(OnigOptionType option, int is_named)
-{
- Node* node = node_new_enclose(ENCLOSE_MEMORY);
- CHECK_NULL_RETURN(node);
- if (is_named != 0)
- SET_ENCLOSE_STATUS(node, NST_NAMED_GROUP);
-
-#ifdef USE_SUBEXP_CALL
- NENCLOSE(node)->option = option;
-#endif
- return node;
-}
-
-static Node*
-node_new_option(OnigOptionType option)
-{
- Node* node = node_new_enclose(ENCLOSE_OPTION);
- CHECK_NULL_RETURN(node);
- NENCLOSE(node)->option = option;
- return node;
-}
-
-extern int
-onig_node_str_cat(Node* node, const UChar* s, const UChar* end)
-{
- int addlen = end - s;
-
- if (addlen > 0) {
- int len = NSTR(node)->end - NSTR(node)->s;
-
- if (NSTR(node)->capa > 0 || (len + addlen > NODE_STR_BUF_SIZE - 1)) {
- UChar* p;
- int capa = len + addlen + NODE_STR_MARGIN;
-
- if (capa <= NSTR(node)->capa) {
- onig_strcpy(NSTR(node)->s + len, s, end);
- }
- else {
- if (NSTR(node)->s == NSTR(node)->buf)
- p = strcat_capa_from_static(NSTR(node)->s, NSTR(node)->end,
- s, end, capa);
- else
- p = strcat_capa(NSTR(node)->s, NSTR(node)->end, s, end, capa);
-
- CHECK_NULL_RETURN_MEMERR(p);
- NSTR(node)->s = p;
- NSTR(node)->capa = capa;
- }
- }
- else {
- onig_strcpy(NSTR(node)->s + len, s, end);
- }
- NSTR(node)->end = NSTR(node)->s + len + addlen;
- }
-
- return 0;
-}
-
-extern int
-onig_node_str_set(Node* node, const UChar* s, const UChar* end)
-{
- onig_node_str_clear(node);
- return onig_node_str_cat(node, s, end);
-}
-
-static int
-node_str_cat_char(Node* node, UChar c)
-{
- UChar s[1];
-
- s[0] = c;
- return onig_node_str_cat(node, s, s + 1);
-}
-
-extern void
-onig_node_conv_to_str_node(Node* node, int flag)
-{
- SET_NTYPE(node, NT_STR);
- NSTR(node)->flag = flag;
- NSTR(node)->capa = 0;
- NSTR(node)->s = NSTR(node)->buf;
- NSTR(node)->end = NSTR(node)->buf;
-}
-
-extern void
-onig_node_str_clear(Node* node)
-{
- if (NSTR(node)->capa != 0 &&
- IS_NOT_NULL(NSTR(node)->s) && NSTR(node)->s != NSTR(node)->buf) {
- xfree(NSTR(node)->s);
- }
-
- NSTR(node)->capa = 0;
- NSTR(node)->flag = 0;
- NSTR(node)->s = NSTR(node)->buf;
- NSTR(node)->end = NSTR(node)->buf;
-}
-
-static Node*
-node_new_str(const UChar* s, const UChar* end)
-{
- Node* node = node_new();
- CHECK_NULL_RETURN(node);
-
- SET_NTYPE(node, NT_STR);
- NSTR(node)->capa = 0;
- NSTR(node)->flag = 0;
- NSTR(node)->s = NSTR(node)->buf;
- NSTR(node)->end = NSTR(node)->buf;
- if (onig_node_str_cat(node, s, end)) {
- onig_node_free(node);
- return NULL;
- }
- return node;
-}
-
-extern Node*
-onig_node_new_str(const UChar* s, const UChar* end)
-{
- return node_new_str(s, end);
-}
-
-static Node*
-node_new_str_raw(UChar* s, UChar* end)
-{
- Node* node = node_new_str(s, end);
- NSTRING_SET_RAW(node);
- return node;
-}
-
-static Node*
-node_new_empty(void)
-{
- return node_new_str(NULL, NULL);
-}
-
-static Node*
-node_new_str_raw_char(UChar c)
-{
- UChar p[1];
-
- p[0] = c;
- return node_new_str_raw(p, p + 1);
-}
-
-static Node*
-str_node_split_last_char(StrNode* sn, OnigEncoding enc)
-{
- const UChar *p;
- Node* n = NULL_NODE;
-
- if (sn->end > sn->s) {
- p = onigenc_get_prev_char_head(enc, sn->s, sn->end);
- if (p && p > sn->s) { /* can be splitted. */
- n = node_new_str(p, sn->end);
- if ((sn->flag & NSTR_RAW) != 0)
- NSTRING_SET_RAW(n);
- sn->end = (UChar* )p;
- }
- }
- return n;
-}
-
-static int
-str_node_can_be_split(StrNode* sn, OnigEncoding enc)
-{
- if (sn->end > sn->s) {
- return ((enclen(enc, sn->s) < sn->end - sn->s) ? 1 : 0);
- }
- return 0;
-}
-
-#ifdef USE_PAD_TO_SHORT_BYTE_CHAR
-static int
-node_str_head_pad(StrNode* sn, int num, UChar val)
-{
- UChar buf[NODE_STR_BUF_SIZE];
- int i, len;
-
- len = sn->end - sn->s;
- onig_strcpy(buf, sn->s, sn->end);
- onig_strcpy(&(sn->s[num]), buf, buf + len);
- sn->end += num;
-
- for (i = 0; i < num; i++) {
- sn->s[i] = val;
- }
-}
-#endif
-
-extern int
-onig_scan_unsigned_number(UChar** src, const UChar* end, OnigEncoding enc)
-{
- unsigned int num, val;
- OnigCodePoint c;
- UChar* p = *src;
- PFETCH_READY;
-
- num = 0;
- while (!PEND) {
- PFETCH(c);
- if (ONIGENC_IS_CODE_DIGIT(enc, c)) {
- val = (unsigned int )DIGITVAL(c);
- if ((INT_MAX_LIMIT - val) / 10UL < num)
- return -1; /* overflow */
-
- num = num * 10 + val;
- }
- else {
- PUNFETCH;
- break;
- }
- }
- *src = p;
- return num;
-}
-
-static int
-scan_unsigned_hexadecimal_number(UChar** src, UChar* end, int maxlen,
- OnigEncoding enc)
-{
- OnigCodePoint c;
- unsigned int num, val;
- UChar* p = *src;
- PFETCH_READY;
-
- num = 0;
- while (!PEND && maxlen-- != 0) {
- PFETCH(c);
- if (ONIGENC_IS_CODE_XDIGIT(enc, c)) {
- val = (unsigned int )XDIGITVAL(enc,c);
- if ((INT_MAX_LIMIT - val) / 16UL < num)
- return -1; /* overflow */
-
- num = (num << 4) + XDIGITVAL(enc,c);
- }
- else {
- PUNFETCH;
- break;
- }
- }
- *src = p;
- return num;
-}
-
-static int
-scan_unsigned_octal_number(UChar** src, UChar* end, int maxlen,
- OnigEncoding enc)
-{
- OnigCodePoint c;
- unsigned int num, val;
- UChar* p = *src;
- PFETCH_READY;
-
- num = 0;
- while (!PEND && maxlen-- != 0) {
- PFETCH(c);
- if (ONIGENC_IS_CODE_DIGIT(enc, c) && c < '8') {
- val = ODIGITVAL(c);
- if ((INT_MAX_LIMIT - val) / 8UL < num)
- return -1; /* overflow */
-
- num = (num << 3) + val;
- }
- else {
- PUNFETCH;
- break;
- }
- }
- *src = p;
- return num;
-}
-
-
-#define BBUF_WRITE_CODE_POINT(bbuf,pos,code) \
- BBUF_WRITE(bbuf, pos, &(code), SIZE_CODE_POINT)
-
-/* data format:
- [n][from-1][to-1][from-2][to-2] ... [from-n][to-n]
- (all data size is OnigCodePoint)
- */
-static int
-new_code_range(BBuf** pbuf)
-{
-#define INIT_MULTI_BYTE_RANGE_SIZE (SIZE_CODE_POINT * 5)
- int r;
- OnigCodePoint n;
- BBuf* bbuf;
-
- bbuf = *pbuf = (BBuf* )xmalloc(sizeof(BBuf));
- CHECK_NULL_RETURN_MEMERR(*pbuf);
- r = BBUF_INIT(*pbuf, INIT_MULTI_BYTE_RANGE_SIZE);
- if (r) return r;
-
- n = 0;
- BBUF_WRITE_CODE_POINT(bbuf, 0, n);
- return 0;
-}
-
-static int
-add_code_range_to_buf(BBuf** pbuf, OnigCodePoint from, OnigCodePoint to)
-{
- int r, inc_n, pos;
- int low, high, bound, x;
- OnigCodePoint n, *data;
- BBuf* bbuf;
-
- if (from > to) {
- n = from; from = to; to = n;
- }
-
- if (IS_NULL(*pbuf)) {
- r = new_code_range(pbuf);
- if (r) return r;
- bbuf = *pbuf;
- n = 0;
- }
- else {
- bbuf = *pbuf;
- GET_CODE_POINT(n, bbuf->p);
- }
- data = (OnigCodePoint* )(bbuf->p);
- data++;
-
- for (low = 0, bound = n; low < bound; ) {
- x = (low + bound) >> 1;
- if (from > data[x*2 + 1])
- low = x + 1;
- else
- bound = x;
- }
-
- for (high = low, bound = n; high < bound; ) {
- x = (high + bound) >> 1;
- if (to >= data[x*2] - 1)
- high = x + 1;
- else
- bound = x;
- }
-
- inc_n = low + 1 - high;
- if (n + inc_n > ONIG_MAX_MULTI_BYTE_RANGES_NUM)
- return ONIGERR_TOO_MANY_MULTI_BYTE_RANGES;
-
- if (inc_n != 1) {
- if (from > data[low*2])
- from = data[low*2];
- if (to < data[(high - 1)*2 + 1])
- to = data[(high - 1)*2 + 1];
- }
-
- if (inc_n != 0 && (OnigCodePoint )high < n) {
- int from_pos = SIZE_CODE_POINT * (1 + high * 2);
- int to_pos = SIZE_CODE_POINT * (1 + (low + 1) * 2);
- int size = (n - high) * 2 * SIZE_CODE_POINT;
-
- if (inc_n > 0) {
- BBUF_MOVE_RIGHT(bbuf, from_pos, to_pos, size);
- }
- else {
- BBUF_MOVE_LEFT_REDUCE(bbuf, from_pos, to_pos);
- }
- }
-
- pos = SIZE_CODE_POINT * (1 + low * 2);
- BBUF_ENSURE_SIZE(bbuf, pos + SIZE_CODE_POINT * 2);
- BBUF_WRITE_CODE_POINT(bbuf, pos, from);
- BBUF_WRITE_CODE_POINT(bbuf, pos + SIZE_CODE_POINT, to);
- n += inc_n;
- BBUF_WRITE_CODE_POINT(bbuf, 0, n);
-
- return 0;
-}
-
-static int
-add_code_range(BBuf** pbuf, ScanEnv* env, OnigCodePoint from, OnigCodePoint to)
-{
- if (from > to) {
- if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC))
- return 0;
- else
- return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS;
- }
-
- return add_code_range_to_buf(pbuf, from, to);
-}
-
-static int
-not_code_range_buf(OnigEncoding enc, BBuf* bbuf, BBuf** pbuf)
-{
- int r, i, n;
- OnigCodePoint pre, from, *data, to = 0;
-
- *pbuf = (BBuf* )NULL;
- if (IS_NULL(bbuf)) {
- set_all:
- return SET_ALL_MULTI_BYTE_RANGE(enc, pbuf);
- }
-
- data = (OnigCodePoint* )(bbuf->p);
- GET_CODE_POINT(n, data);
- data++;
- if (n <= 0) goto set_all;
-
- r = 0;
- pre = MBCODE_START_POS(enc);
- for (i = 0; i < n; i++) {
- from = data[i*2];
- to = data[i*2+1];
- if (pre <= from - 1) {
- r = add_code_range_to_buf(pbuf, pre, from - 1);
- if (r != 0) return r;
- }
- if (to == ~((OnigCodePoint )0)) break;
- pre = to + 1;
- }
- if (to < ~((OnigCodePoint )0)) {
- r = add_code_range_to_buf(pbuf, to + 1, ~((OnigCodePoint )0));
- }
- return r;
-}
-
-#define SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2) do {\
- BBuf *tbuf; \
- int tnot; \
- tnot = not1; not1 = not2; not2 = tnot; \
- tbuf = bbuf1; bbuf1 = bbuf2; bbuf2 = tbuf; \
-} while (0)
-
-static int
-or_code_range_buf(OnigEncoding enc, BBuf* bbuf1, int not1,
- BBuf* bbuf2, int not2, BBuf** pbuf)
-{
- int r;
- OnigCodePoint i, n1, *data1;
- OnigCodePoint from, to;
-
- *pbuf = (BBuf* )NULL;
- if (IS_NULL(bbuf1) && IS_NULL(bbuf2)) {
- if (not1 != 0 || not2 != 0)
- return SET_ALL_MULTI_BYTE_RANGE(enc, pbuf);
- return 0;
- }
-
- r = 0;
- if (IS_NULL(bbuf2))
- SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);
-
- if (IS_NULL(bbuf1)) {
- if (not1 != 0) {
- return SET_ALL_MULTI_BYTE_RANGE(enc, pbuf);
- }
- else {
- if (not2 == 0) {
- return bbuf_clone(pbuf, bbuf2);
- }
- else {
- return not_code_range_buf(enc, bbuf2, pbuf);
- }
- }
- }
-
- if (not1 != 0)
- SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);
-
- data1 = (OnigCodePoint* )(bbuf1->p);
- GET_CODE_POINT(n1, data1);
- data1++;
-
- if (not2 == 0 && not1 == 0) { /* 1 OR 2 */
- r = bbuf_clone(pbuf, bbuf2);
- }
- else if (not1 == 0) { /* 1 OR (not 2) */
- r = not_code_range_buf(enc, bbuf2, pbuf);
- }
- if (r != 0) return r;
-
- for (i = 0; i < n1; i++) {
- from = data1[i*2];
- to = data1[i*2+1];
- r = add_code_range_to_buf(pbuf, from, to);
- if (r != 0) return r;
- }
- return 0;
-}
-
-static int
-and_code_range1(BBuf** pbuf, OnigCodePoint from1, OnigCodePoint to1,
- OnigCodePoint* data, int n)
-{
- int i, r;
- OnigCodePoint from2, to2;
-
- for (i = 0; i < n; i++) {
- from2 = data[i*2];
- to2 = data[i*2+1];
- if (from2 < from1) {
- if (to2 < from1) continue;
- else {
- from1 = to2 + 1;
- }
- }
- else if (from2 <= to1) {
- if (to2 < to1) {
- if (from1 <= from2 - 1) {
- r = add_code_range_to_buf(pbuf, from1, from2-1);
- if (r != 0) return r;
- }
- from1 = to2 + 1;
- }
- else {
- to1 = from2 - 1;
- }
- }
- else {
- from1 = from2;
- }
- if (from1 > to1) break;
- }
- if (from1 <= to1) {
- r = add_code_range_to_buf(pbuf, from1, to1);
- if (r != 0) return r;
- }
- return 0;
-}
-
-static int
-and_code_range_buf(BBuf* bbuf1, int not1, BBuf* bbuf2, int not2, BBuf** pbuf)
-{
- int r;
- OnigCodePoint i, j, n1, n2, *data1, *data2;
- OnigCodePoint from, to, from1, to1, from2, to2;
-
- *pbuf = (BBuf* )NULL;
- if (IS_NULL(bbuf1)) {
- if (not1 != 0 && IS_NOT_NULL(bbuf2)) /* not1 != 0 -> not2 == 0 */
- return bbuf_clone(pbuf, bbuf2);
- return 0;
- }
- else if (IS_NULL(bbuf2)) {
- if (not2 != 0)
- return bbuf_clone(pbuf, bbuf1);
- return 0;
- }
-
- if (not1 != 0)
- SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);
-
- data1 = (OnigCodePoint* )(bbuf1->p);
- data2 = (OnigCodePoint* )(bbuf2->p);
- GET_CODE_POINT(n1, data1);
- GET_CODE_POINT(n2, data2);
- data1++;
- data2++;
-
- if (not2 == 0 && not1 == 0) { /* 1 AND 2 */
- for (i = 0; i < n1; i++) {
- from1 = data1[i*2];
- to1 = data1[i*2+1];
- for (j = 0; j < n2; j++) {
- from2 = data2[j*2];
- to2 = data2[j*2+1];
- if (from2 > to1) break;
- if (to2 < from1) continue;
- from = MAX(from1, from2);
- to = MIN(to1, to2);
- r = add_code_range_to_buf(pbuf, from, to);
- if (r != 0) return r;
- }
- }
- }
- else if (not1 == 0) { /* 1 AND (not 2) */
- for (i = 0; i < n1; i++) {
- from1 = data1[i*2];
- to1 = data1[i*2+1];
- r = and_code_range1(pbuf, from1, to1, data2, n2);
- if (r != 0) return r;
- }
- }
-
- return 0;
-}
-
-static int
-and_cclass(CClassNode* dest, CClassNode* cc, OnigEncoding enc)
-{
- int r, not1, not2;
- BBuf *buf1, *buf2, *pbuf;
- BitSetRef bsr1, bsr2;
- BitSet bs1, bs2;
-
- not1 = IS_NCCLASS_NOT(dest);
- bsr1 = dest->bs;
- buf1 = dest->mbuf;
- not2 = IS_NCCLASS_NOT(cc);
- bsr2 = cc->bs;
- buf2 = cc->mbuf;
-
- if (not1 != 0) {
- bitset_invert_to(bsr1, bs1);
- bsr1 = bs1;
- }
- if (not2 != 0) {
- bitset_invert_to(bsr2, bs2);
- bsr2 = bs2;
- }
- bitset_and(bsr1, bsr2);
- if (bsr1 != dest->bs) {
- bitset_copy(dest->bs, bsr1);
- bsr1 = dest->bs;
- }
- if (not1 != 0) {
- bitset_invert(dest->bs);
- }
-
- if (! ONIGENC_IS_SINGLEBYTE(enc)) {
- if (not1 != 0 && not2 != 0) {
- r = or_code_range_buf(enc, buf1, 0, buf2, 0, &pbuf);
- }
- else {
- r = and_code_range_buf(buf1, not1, buf2, not2, &pbuf);
- if (r == 0 && not1 != 0) {
- BBuf *tbuf;
- r = not_code_range_buf(enc, pbuf, &tbuf);
- if (r != 0) {
- bbuf_free(pbuf);
- return r;
- }
- bbuf_free(pbuf);
- pbuf = tbuf;
- }
- }
- if (r != 0) return r;
-
- dest->mbuf = pbuf;
- bbuf_free(buf1);
- return r;
- }
- return 0;
-}
-
-static int
-or_cclass(CClassNode* dest, CClassNode* cc, OnigEncoding enc)
-{
- int r, not1, not2;
- BBuf *buf1, *buf2, *pbuf;
- BitSetRef bsr1, bsr2;
- BitSet bs1, bs2;
-
- not1 = IS_NCCLASS_NOT(dest);
- bsr1 = dest->bs;
- buf1 = dest->mbuf;
- not2 = IS_NCCLASS_NOT(cc);
- bsr2 = cc->bs;
- buf2 = cc->mbuf;
-
- if (not1 != 0) {
- bitset_invert_to(bsr1, bs1);
- bsr1 = bs1;
- }
- if (not2 != 0) {
- bitset_invert_to(bsr2, bs2);
- bsr2 = bs2;
- }
- bitset_or(bsr1, bsr2);
- if (bsr1 != dest->bs) {
- bitset_copy(dest->bs, bsr1);
- bsr1 = dest->bs;
- }
- if (not1 != 0) {
- bitset_invert(dest->bs);
- }
-
- if (! ONIGENC_IS_SINGLEBYTE(enc)) {
- if (not1 != 0 && not2 != 0) {
- r = and_code_range_buf(buf1, 0, buf2, 0, &pbuf);
- }
- else {
- r = or_code_range_buf(enc, buf1, not1, buf2, not2, &pbuf);
- if (r == 0 && not1 != 0) {
- BBuf *tbuf;
- r = not_code_range_buf(enc, pbuf, &tbuf);
- if (r != 0) {
- bbuf_free(pbuf);
- return r;
- }
- bbuf_free(pbuf);
- pbuf = tbuf;
- }
- }
- if (r != 0) return r;
-
- dest->mbuf = pbuf;
- bbuf_free(buf1);
- return r;
- }
- else
- return 0;
-}
-
-static int
-conv_backslash_value(int c, ScanEnv* env)
-{
- if (IS_SYNTAX_OP(env->syntax, ONIG_SYN_OP_ESC_CONTROL_CHARS)) {
- switch (c) {
- case 'n': return '\n';
- case 't': return '\t';
- case 'r': return '\r';
- case 'f': return '\f';
- case 'a': return '\007';
- case 'b': return '\010';
- case 'e': return '\033';
- case 'v':
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_ESC_V_VTAB))
- return '\v';
- break;
-
- default:
- break;
- }
- }
- return c;
-}
-
-static int
-is_invalid_quantifier_target(Node* node)
-{
- switch (NTYPE(node)) {
- case NT_ANCHOR:
- return 1;
- break;
-
- case NT_ENCLOSE:
- /* allow enclosed elements */
- /* return is_invalid_quantifier_target(NENCLOSE(node)->target); */
- break;
-
- case NT_LIST:
- do {
- if (! is_invalid_quantifier_target(NCAR(node))) return 0;
- } while (IS_NOT_NULL(node = NCDR(node)));
- return 0;
- break;
-
- case NT_ALT:
- do {
- if (is_invalid_quantifier_target(NCAR(node))) return 1;
- } while (IS_NOT_NULL(node = NCDR(node)));
- break;
-
- default:
- break;
- }
- return 0;
-}
-
-/* ?:0, *:1, +:2, ??:3, *?:4, +?:5 */
-static int
-popular_quantifier_num(QtfrNode* q)
-{
- if (q->greedy) {
- if (q->lower == 0) {
- if (q->upper == 1) return 0;
- else if (IS_REPEAT_INFINITE(q->upper)) return 1;
- }
- else if (q->lower == 1) {
- if (IS_REPEAT_INFINITE(q->upper)) return 2;
- }
- }
- else {
- if (q->lower == 0) {
- if (q->upper == 1) return 3;
- else if (IS_REPEAT_INFINITE(q->upper)) return 4;
- }
- else if (q->lower == 1) {
- if (IS_REPEAT_INFINITE(q->upper)) return 5;
- }
- }
- return -1;
-}
-
-
-enum ReduceType {
- RQ_ASIS = 0, /* as is */
- RQ_DEL = 1, /* delete parent */
- RQ_A, /* to '*' */
- RQ_AQ, /* to '*?' */
- RQ_QQ, /* to '??' */
- RQ_P_QQ, /* to '+)??' */
- RQ_PQ_Q /* to '+?)?' */
-};
-
-static enum ReduceType ReduceTypeTable[6][6] = {
- {RQ_DEL, RQ_A, RQ_A, RQ_QQ, RQ_AQ, RQ_ASIS}, /* '?' */
- {RQ_DEL, RQ_DEL, RQ_DEL, RQ_P_QQ, RQ_P_QQ, RQ_DEL}, /* '*' */
- {RQ_A, RQ_A, RQ_DEL, RQ_ASIS, RQ_P_QQ, RQ_DEL}, /* '+' */
- {RQ_DEL, RQ_AQ, RQ_AQ, RQ_DEL, RQ_AQ, RQ_AQ}, /* '??' */
- {RQ_DEL, RQ_DEL, RQ_DEL, RQ_DEL, RQ_DEL, RQ_DEL}, /* '*?' */
- {RQ_ASIS, RQ_PQ_Q, RQ_DEL, RQ_AQ, RQ_AQ, RQ_DEL} /* '+?' */
-};
-
-extern void
-onig_reduce_nested_quantifier(Node* pnode, Node* cnode)
-{
- int pnum, cnum;
- QtfrNode *p, *c;
-
- p = NQTFR(pnode);
- c = NQTFR(cnode);
- pnum = popular_quantifier_num(p);
- cnum = popular_quantifier_num(c);
- if (pnum < 0 || cnum < 0) return ;
-
- switch(ReduceTypeTable[cnum][pnum]) {
- case RQ_DEL:
- *pnode = *cnode;
- break;
- case RQ_A:
- p->target = c->target;
- p->lower = 0; p->upper = REPEAT_INFINITE; p->greedy = 1;
- break;
- case RQ_AQ:
- p->target = c->target;
- p->lower = 0; p->upper = REPEAT_INFINITE; p->greedy = 0;
- break;
- case RQ_QQ:
- p->target = c->target;
- p->lower = 0; p->upper = 1; p->greedy = 0;
- break;
- case RQ_P_QQ:
- p->target = cnode;
- p->lower = 0; p->upper = 1; p->greedy = 0;
- c->lower = 1; c->upper = REPEAT_INFINITE; c->greedy = 1;
- return ;
- break;
- case RQ_PQ_Q:
- p->target = cnode;
- p->lower = 0; p->upper = 1; p->greedy = 1;
- c->lower = 1; c->upper = REPEAT_INFINITE; c->greedy = 0;
- return ;
- break;
- case RQ_ASIS:
- p->target = cnode;
- return ;
- break;
- }
-
- c->target = NULL_NODE;
- onig_node_free(cnode);
-}
-
-
-enum TokenSyms {
- TK_EOT = 0, /* end of token */
- TK_RAW_BYTE = 1,
- TK_CHAR,
- TK_STRING,
- TK_CODE_POINT,
- TK_ANYCHAR,
- TK_CHAR_TYPE,
- TK_BACKREF,
- TK_CALL,
- TK_ANCHOR,
- TK_OP_REPEAT,
- TK_INTERVAL,
- TK_ANYCHAR_ANYTIME, /* SQL '%' == .* */
- TK_ALT,
- TK_SUBEXP_OPEN,
- TK_SUBEXP_CLOSE,
- TK_CC_OPEN,
- TK_QUOTE_OPEN,
- TK_CHAR_PROPERTY, /* \p{...}, \P{...} */
- /* in cc */
- TK_CC_CLOSE,
- TK_CC_RANGE,
- TK_POSIX_BRACKET_OPEN,
- TK_CC_AND, /* && */
- TK_CC_CC_OPEN /* [ */
-};
-
-typedef struct {
- enum TokenSyms type;
- int escaped;
- int base; /* is number: 8, 16 (used in [....]) */
- UChar* backp;
- union {
- UChar* s;
- int c;
- OnigCodePoint code;
- int anchor;
- int subtype;
- struct {
- int lower;
- int upper;
- int greedy;
- int possessive;
- } repeat;
- struct {
- int num;
- int ref1;
- int* refs;
- int by_name;
-#ifdef USE_BACKREF_WITH_LEVEL
- int exist_level;
- int level; /* \k<name+n> */
-#endif
- } backref;
- struct {
- UChar* name;
- UChar* name_end;
- int gnum;
- } call;
- struct {
- int ctype;
- int not;
- } prop;
- } u;
-} OnigToken;
-
-
-static int
-fetch_range_quantifier(UChar** src, UChar* end, OnigToken* tok, ScanEnv* env)
-{
- int low, up, syn_allow, non_low = 0;
- int r = 0;
- OnigCodePoint c;
- OnigEncoding enc = env->enc;
- UChar* p = *src;
- PFETCH_READY;
-
- syn_allow = IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_INVALID_INTERVAL);
-
- if (PEND) {
- if (syn_allow)
- return 1; /* "....{" : OK! */
- else
- return ONIGERR_END_PATTERN_AT_LEFT_BRACE; /* "....{" syntax error */
- }
-
- if (! syn_allow) {
- c = PPEEK;
- if (c == ')' || c == '(' || c == '|') {
- return ONIGERR_END_PATTERN_AT_LEFT_BRACE;
- }
- }
-
- low = onig_scan_unsigned_number(&p, end, env->enc);
- if (low < 0) return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE;
- if (low > ONIG_MAX_REPEAT_NUM)
- return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE;
-
- if (p == *src) { /* can't read low */
- if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_INTERVAL_LOW_ABBREV)) {
- /* allow {,n} as {0,n} */
- low = 0;
- non_low = 1;
- }
- else
- goto invalid;
- }
-
- if (PEND) goto invalid;
- PFETCH(c);
- if (c == ',') {
- UChar* prev = p;
- up = onig_scan_unsigned_number(&p, end, env->enc);
- if (up < 0) return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE;
- if (up > ONIG_MAX_REPEAT_NUM)
- return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE;
-
- if (p == prev) {
- if (non_low != 0)
- goto invalid;
- up = REPEAT_INFINITE; /* {n,} : {n,infinite} */
- }
- }
- else {
- if (non_low != 0)
- goto invalid;
-
- PUNFETCH;
- up = low; /* {n} : exact n times */
- r = 2; /* fixed */
- }
-
- if (PEND) goto invalid;
- PFETCH(c);
- if (IS_SYNTAX_OP(env->syntax, ONIG_SYN_OP_ESC_BRACE_INTERVAL)) {
- if (c != MC_ESC(env->syntax)) goto invalid;
- PFETCH(c);
- }
- if (c != '}') goto invalid;
-
- if (!IS_REPEAT_INFINITE(up) && low > up) {
- return ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE;
- }
-
- tok->type = TK_INTERVAL;
- tok->u.repeat.lower = low;
- tok->u.repeat.upper = up;
- *src = p;
- return r; /* 0: normal {n,m}, 2: fixed {n} */
-
- invalid:
- if (syn_allow)
- return 1; /* OK */
- else
- return ONIGERR_INVALID_REPEAT_RANGE_PATTERN;
-}
-
-/* \M-, \C-, \c, or \... */
-static int
-fetch_escaped_value(UChar** src, UChar* end, ScanEnv* env)
-{
- int v;
- OnigCodePoint c;
- OnigEncoding enc = env->enc;
- UChar* p = *src;
-
- if (PEND) return ONIGERR_END_PATTERN_AT_ESCAPE;
-
- PFETCH_S(c);
- switch (c) {
- case 'M':
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_ESC_CAPITAL_M_BAR_META)) {
- if (PEND) return ONIGERR_END_PATTERN_AT_META;
- PFETCH_S(c);
- if (c != '-') return ONIGERR_META_CODE_SYNTAX;
- if (PEND) return ONIGERR_END_PATTERN_AT_META;
- PFETCH_S(c);
- if (c == MC_ESC(env->syntax)) {
- v = fetch_escaped_value(&p, end, env);
- if (v < 0) return v;
- c = (OnigCodePoint )v;
- }
- c = ((c & 0xff) | 0x80);
- }
- else
- goto backslash;
- break;
-
- case 'C':
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_ESC_CAPITAL_C_BAR_CONTROL)) {
- if (PEND) return ONIGERR_END_PATTERN_AT_CONTROL;
- PFETCH_S(c);
- if (c != '-') return ONIGERR_CONTROL_CODE_SYNTAX;
- goto control;
- }
- else
- goto backslash;
-
- case 'c':
- if (IS_SYNTAX_OP(env->syntax, ONIG_SYN_OP_ESC_C_CONTROL)) {
- control:
- if (PEND) return ONIGERR_END_PATTERN_AT_CONTROL;
- PFETCH_S(c);
- if (c == '?') {
- c = 0177;
- }
- else {
- if (c == MC_ESC(env->syntax)) {
- v = fetch_escaped_value(&p, end, env);
- if (v < 0) return v;
- c = (OnigCodePoint )v;
- }
- c &= 0x9f;
- }
- break;
- }
- /* fall through */
-
- default:
- {
- backslash:
- c = conv_backslash_value(c, env);
- }
- break;
- }
-
- *src = p;
- return c;
-}
-
-static int fetch_token(OnigToken* tok, UChar** src, UChar* end, ScanEnv* env);
-
-static OnigCodePoint
-get_name_end_code_point(OnigCodePoint start)
-{
- switch (start) {
- case '<': return (OnigCodePoint )'>'; break;
- case '\'': return (OnigCodePoint )'\''; break;
- default:
- break;
- }
-
- return (OnigCodePoint )0;
-}
-
-#ifdef USE_NAMED_GROUP
-#ifdef USE_BACKREF_WITH_LEVEL
-/*
- \k<name+n>, \k<name-n>
- \k<num+n>, \k<num-n>
- \k<-num+n>, \k<-num-n>
-*/
-static int
-fetch_name_with_level(OnigCodePoint start_code, UChar** src, UChar* end,
- UChar** rname_end, ScanEnv* env,
- int* rback_num, int* rlevel)
-{
- int r, sign, is_num, exist_level;
- OnigCodePoint end_code;
- OnigCodePoint c = 0;
- OnigEncoding enc = env->enc;
- UChar *name_end;
- UChar *pnum_head;
- UChar *p = *src;
- PFETCH_READY;
-
- *rback_num = 0;
- is_num = exist_level = 0;
- sign = 1;
- pnum_head = *src;
-
- end_code = get_name_end_code_point(start_code);
-
- name_end = end;
- r = 0;
- if (PEND) {
- return ONIGERR_EMPTY_GROUP_NAME;
- }
- else {
- PFETCH(c);
- if (c == end_code)
- return ONIGERR_EMPTY_GROUP_NAME;
-
- if (ONIGENC_IS_CODE_DIGIT(enc, c)) {
- is_num = 1;
- }
- else if (c == '-') {
- is_num = 2;
- sign = -1;
- pnum_head = p;
- }
- else if (!ONIGENC_IS_CODE_WORD(enc, c)) {
- r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
- }
- }
-
- while (!PEND) {
- name_end = p;
- PFETCH(c);
- if (c == end_code || c == ')' || c == '+' || c == '-') {
- if (is_num == 2) r = ONIGERR_INVALID_GROUP_NAME;
- break;
- }
-
- if (is_num != 0) {
- if (ONIGENC_IS_CODE_DIGIT(enc, c)) {
- is_num = 1;
- }
- else {
- r = ONIGERR_INVALID_GROUP_NAME;
- is_num = 0;
- }
- }
- else if (!ONIGENC_IS_CODE_WORD(enc, c)) {
- r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
- }
- }
-
- if (r == 0 && c != end_code) {
- if (c == '+' || c == '-') {
- int level;
- int flag = (c == '-' ? -1 : 1);
-
- PFETCH(c);
- if (! ONIGENC_IS_CODE_DIGIT(enc, c)) goto err;
- PUNFETCH;
- level = onig_scan_unsigned_number(&p, end, enc);
- if (level < 0) return ONIGERR_TOO_BIG_NUMBER;
- *rlevel = (level * flag);
- exist_level = 1;
-
- PFETCH(c);
- if (c == end_code)
- goto end;
- }
-
- err:
- r = ONIGERR_INVALID_GROUP_NAME;
- name_end = end;
- }
-
- end:
- if (r == 0) {
- if (is_num != 0) {
- *rback_num = onig_scan_unsigned_number(&pnum_head, name_end, enc);
- if (*rback_num < 0) return ONIGERR_TOO_BIG_NUMBER;
- else if (*rback_num == 0) goto err;
-
- *rback_num *= sign;
- }
-
- *rname_end = name_end;
- *src = p;
- return (exist_level ? 1 : 0);
- }
- else {
- onig_scan_env_set_error_string(env, r, *src, name_end);
- return r;
- }
-}
-#endif /* USE_BACKREF_WITH_LEVEL */
-
-/*
- def: 0 -> define name (don't allow number name)
- 1 -> reference name (allow number name)
-*/
-static int
-fetch_name(OnigCodePoint start_code, UChar** src, UChar* end,
- UChar** rname_end, ScanEnv* env, int* rback_num, int ref)
-{
- int r, is_num, sign;
- OnigCodePoint end_code;
- OnigCodePoint c = 0;
- OnigEncoding enc = env->enc;
- UChar *name_end;
- UChar *pnum_head;
- UChar *p = *src;
-
- *rback_num = 0;
-
- end_code = get_name_end_code_point(start_code);
-
- name_end = end;
- pnum_head = *src;
- r = 0;
- is_num = 0;
- sign = 1;
- if (PEND) {
- return ONIGERR_EMPTY_GROUP_NAME;
- }
- else {
- PFETCH_S(c);
- if (c == end_code)
- return ONIGERR_EMPTY_GROUP_NAME;
-
- if (ONIGENC_IS_CODE_DIGIT(enc, c)) {
- if (ref == 1)
- is_num = 1;
- else {
- r = ONIGERR_INVALID_GROUP_NAME;
- is_num = 0;
- }
- }
- else if (c == '-') {
- if (ref == 1) {
- is_num = 2;
- sign = -1;
- pnum_head = p;
- }
- else {
- r = ONIGERR_INVALID_GROUP_NAME;
- is_num = 0;
- }
- }
- else if (!ONIGENC_IS_CODE_WORD(enc, c)) {
- r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
- }
- }
-
- if (r == 0) {
- while (!PEND) {
- name_end = p;
- PFETCH_S(c);
- if (c == end_code || c == ')') {
- if (is_num == 2) r = ONIGERR_INVALID_GROUP_NAME;
- break;
- }
-
- if (is_num != 0) {
- if (ONIGENC_IS_CODE_DIGIT(enc, c)) {
- is_num = 1;
- }
- else {
- if (!ONIGENC_IS_CODE_WORD(enc, c))
- r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
- else
- r = ONIGERR_INVALID_GROUP_NAME;
- is_num = 0;
- }
- }
- else {
- if (!ONIGENC_IS_CODE_WORD(enc, c)) {
- r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
- }
- }
- }
-
- if (c != end_code) {
- r = ONIGERR_INVALID_GROUP_NAME;
- name_end = end;
- }
-
- if (is_num != 0) {
- *rback_num = onig_scan_unsigned_number(&pnum_head, name_end, enc);
- if (*rback_num < 0) return ONIGERR_TOO_BIG_NUMBER;
- else if (*rback_num == 0) {
- r = ONIGERR_INVALID_GROUP_NAME;
- goto err;
- }
-
- *rback_num *= sign;
- }
-
- *rname_end = name_end;
- *src = p;
- return 0;
- }
- else {
- while (!PEND) {
- name_end = p;
- PFETCH_S(c);
- if (c == end_code || c == ')')
- break;
- }
- if (PEND)
- name_end = end;
-
- err:
- onig_scan_env_set_error_string(env, r, *src, name_end);
- return r;
- }
-}
-#else
-static int
-fetch_name(OnigCodePoint start_code, UChar** src, UChar* end,
- UChar** rname_end, ScanEnv* env, int* rback_num, int ref)
-{
- int r, is_num, sign;
- OnigCodePoint end_code;
- OnigCodePoint c = 0;
- UChar *name_end;
- OnigEncoding enc = env->enc;
- UChar *pnum_head;
- UChar *p = *src;
- PFETCH_READY;
-
- *rback_num = 0;
-
- end_code = get_name_end_code_point(start_code);
-
- *rname_end = name_end = end;
- r = 0;
- pnum_head = *src;
- is_num = 0;
- sign = 1;
-
- if (PEND) {
- return ONIGERR_EMPTY_GROUP_NAME;
- }
- else {
- PFETCH(c);
- if (c == end_code)
- return ONIGERR_EMPTY_GROUP_NAME;
-
- if (ONIGENC_IS_CODE_DIGIT(enc, c)) {
- is_num = 1;
- }
- else if (c == '-') {
- is_num = 2;
- sign = -1;
- pnum_head = p;
- }
- else {
- r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
- }
- }
-
- while (!PEND) {
- name_end = p;
-
- PFETCH(c);
- if (c == end_code || c == ')') break;
- if (! ONIGENC_IS_CODE_DIGIT(enc, c))
- r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
- }
- if (r == 0 && c != end_code) {
- r = ONIGERR_INVALID_GROUP_NAME;
- name_end = end;
- }
-
- if (r == 0) {
- *rback_num = onig_scan_unsigned_number(&pnum_head, name_end, enc);
- if (*rback_num < 0) return ONIGERR_TOO_BIG_NUMBER;
- else if (*rback_num == 0) {
- r = ONIGERR_INVALID_GROUP_NAME;
- goto err;
- }
- *rback_num *= sign;
-
- *rname_end = name_end;
- *src = p;
- return 0;
- }
- else {
- err:
- onig_scan_env_set_error_string(env, r, *src, name_end);
- return r;
- }
-}
-#endif /* USE_NAMED_GROUP */
-
-static void
-CC_ESC_WARN(ScanEnv* env, UChar *c)
-{
- if (onig_warn == onig_null_warn) return ;
-
- if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_WARN_CC_OP_NOT_ESCAPED) &&
- IS_SYNTAX_BV(env->syntax, ONIG_SYN_BACKSLASH_ESCAPE_IN_CC)) {
- UChar buf[WARN_BUFSIZE];
- onig_snprintf_with_pattern(buf, WARN_BUFSIZE, env->enc,
- env->pattern, env->pattern_end,
- (UChar* )"character class has '%s' without escape", c);
- (*onig_warn)((char* )buf);
- }
-}
-
-static void
-CLOSE_BRACKET_WITHOUT_ESC_WARN(ScanEnv* env, UChar* c)
-{
- if (onig_warn == onig_null_warn) return ;
-
- if (IS_SYNTAX_BV((env)->syntax, ONIG_SYN_WARN_CC_OP_NOT_ESCAPED)) {
- UChar buf[WARN_BUFSIZE];
- onig_snprintf_with_pattern(buf, WARN_BUFSIZE, (env)->enc,
- (env)->pattern, (env)->pattern_end,
- (UChar* )"regular expression has '%s' without escape", c);
- (*onig_warn)((char* )buf);
- }
-}
-
-static UChar*
-find_str_position(OnigCodePoint s[], int n, UChar* from, UChar* to,
- UChar **next, OnigEncoding enc)
-{
- int i;
- OnigCodePoint x;
- UChar *q;
- UChar *p = from;
-
- while (p < to) {
- x = ONIGENC_MBC_TO_CODE(enc, p, to);
- q = p + enclen(enc, p);
- if (x == s[0]) {
- for (i = 1; i < n && q < to; i++) {
- x = ONIGENC_MBC_TO_CODE(enc, q, to);
- if (x != s[i]) break;
- q += enclen(enc, q);
- }
- if (i >= n) {
- if (IS_NOT_NULL(next))
- *next = q;
- return p;
- }
- }
- p = q;
- }
- return NULL_UCHARP;
-}
-
-static int
-str_exist_check_with_esc(OnigCodePoint s[], int n, UChar* from, UChar* to,
- OnigCodePoint bad, OnigEncoding enc, OnigSyntaxType* syn)
-{
- int i, in_esc;
- OnigCodePoint x;
- UChar *q;
- UChar *p = from;
-
- in_esc = 0;
- while (p < to) {
- if (in_esc) {
- in_esc = 0;
- p += enclen(enc, p);
- }
- else {
- x = ONIGENC_MBC_TO_CODE(enc, p, to);
- q = p + enclen(enc, p);
- if (x == s[0]) {
- for (i = 1; i < n && q < to; i++) {
- x = ONIGENC_MBC_TO_CODE(enc, q, to);
- if (x != s[i]) break;
- q += enclen(enc, q);
- }
- if (i >= n) return 1;
- p += enclen(enc, p);
- }
- else {
- x = ONIGENC_MBC_TO_CODE(enc, p, to);
- if (x == bad) return 0;
- else if (x == MC_ESC(syn)) in_esc = 1;
- p = q;
- }
- }
- }
- return 0;
-}
-
-static int
-fetch_token_in_cc(OnigToken* tok, UChar** src, UChar* end, ScanEnv* env)
-{
- int num;
- OnigCodePoint c, c2;
- OnigSyntaxType* syn = env->syntax;
- OnigEncoding enc = env->enc;
- UChar* prev;
- UChar* p = *src;
- PFETCH_READY;
-
- if (PEND) {
- tok->type = TK_EOT;
- return tok->type;
- }
-
- PFETCH(c);
- tok->type = TK_CHAR;
- tok->base = 0;
- tok->u.c = c;
- tok->escaped = 0;
-
- if (c == ']') {
- tok->type = TK_CC_CLOSE;
- }
- else if (c == '-') {
- tok->type = TK_CC_RANGE;
- }
- else if (c == MC_ESC(syn)) {
- if (! IS_SYNTAX_BV(syn, ONIG_SYN_BACKSLASH_ESCAPE_IN_CC))
- goto end;
-
- if (PEND) return ONIGERR_END_PATTERN_AT_ESCAPE;
-
- PFETCH(c);
- tok->escaped = 1;
- tok->u.c = c;
- switch (c) {
- case 'w':
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_WORD;
- tok->u.prop.not = 0;
- break;
- case 'W':
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_WORD;
- tok->u.prop.not = 1;
- break;
- case 'd':
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_DIGIT;
- tok->u.prop.not = 0;
- break;
- case 'D':
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_DIGIT;
- tok->u.prop.not = 1;
- break;
- case 's':
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_SPACE;
- tok->u.prop.not = 0;
- break;
- case 'S':
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_SPACE;
- tok->u.prop.not = 1;
- break;
- case 'h':
- if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_H_XDIGIT)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_XDIGIT;
- tok->u.prop.not = 0;
- break;
- case 'H':
- if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_H_XDIGIT)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_XDIGIT;
- tok->u.prop.not = 1;
- break;
-
- case 'p':
- case 'P':
- c2 = PPEEK;
- if (c2 == '{' &&
- IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY)) {
- PINC;
- tok->type = TK_CHAR_PROPERTY;
- tok->u.prop.not = (c == 'P' ? 1 : 0);
-
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT)) {
- PFETCH(c2);
- if (c2 == '^') {
- tok->u.prop.not = (tok->u.prop.not == 0 ? 1 : 0);
- }
- else
- PUNFETCH;
- }
- }
- break;
-
- case 'x':
- if (PEND) break;
-
- prev = p;
- if (PPEEK_IS('{') && IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_X_BRACE_HEX8)) {
- PINC;
- num = scan_unsigned_hexadecimal_number(&p, end, 8, enc);
- if (num < 0) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE;
- if (!PEND) {
- c2 = PPEEK;
- if (ONIGENC_IS_CODE_XDIGIT(enc, c2))
- return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE;
- }
-
- if (p > prev + enclen(enc, prev) && !PEND && (PPEEK_IS('}'))) {
- PINC;
- tok->type = TK_CODE_POINT;
- tok->base = 16;
- tok->u.code = (OnigCodePoint )num;
- }
- else {
- /* can't read nothing or invalid format */
- p = prev;
- }
- }
- else if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_X_HEX2)) {
- num = scan_unsigned_hexadecimal_number(&p, end, 2, enc);
- if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
- if (p == prev) { /* can't read nothing. */
- num = 0; /* but, it's not error */
- }
- tok->type = TK_RAW_BYTE;
- tok->base = 16;
- tok->u.c = num;
- }
- break;
-
- case 'u':
- if (PEND) break;
-
- prev = p;
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_U_HEX4)) {
- num = scan_unsigned_hexadecimal_number(&p, end, 4, enc);
- if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
- if (p == prev) { /* can't read nothing. */
- num = 0; /* but, it's not error */
- }
- tok->type = TK_CODE_POINT;
- tok->base = 16;
- tok->u.code = (OnigCodePoint )num;
- }
- break;
-
- case '0':
- case '1': case '2': case '3': case '4': case '5': case '6': case '7':
- if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_OCTAL3)) {
- PUNFETCH;
- prev = p;
- num = scan_unsigned_octal_number(&p, end, 3, enc);
- if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
- if (p == prev) { /* can't read nothing. */
- num = 0; /* but, it's not error */
- }
- tok->type = TK_RAW_BYTE;
- tok->base = 8;
- tok->u.c = num;
- }
- break;
-
- default:
- PUNFETCH;
- num = fetch_escaped_value(&p, end, env);
- if (num < 0) return num;
- if (tok->u.c != num) {
- tok->u.code = (OnigCodePoint )num;
- tok->type = TK_CODE_POINT;
- }
- break;
- }
- }
- else if (c == '[') {
- if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_POSIX_BRACKET) && (PPEEK_IS(':'))) {
- OnigCodePoint send[] = { (OnigCodePoint )':', (OnigCodePoint )']' };
- tok->backp = p; /* point at '[' is readed */
- PINC;
- if (str_exist_check_with_esc(send, 2, p, end,
- (OnigCodePoint )']', enc, syn)) {
- tok->type = TK_POSIX_BRACKET_OPEN;
- }
- else {
- PUNFETCH;
- goto cc_in_cc;
- }
- }
- else {
- cc_in_cc:
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_CCLASS_SET_OP)) {
- tok->type = TK_CC_CC_OPEN;
- }
- else {
- CC_ESC_WARN(env, (UChar* )"[");
- }
- }
- }
- else if (c == '&') {
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_CCLASS_SET_OP) &&
- !PEND && (PPEEK_IS('&'))) {
- PINC;
- tok->type = TK_CC_AND;
- }
- }
-
- end:
- *src = p;
- return tok->type;
-}
-
-static int
-fetch_token(OnigToken* tok, UChar** src, UChar* end, ScanEnv* env)
-{
- int r, num;
- OnigCodePoint c;
- OnigEncoding enc = env->enc;
- OnigSyntaxType* syn = env->syntax;
- UChar* prev;
- UChar* p = *src;
- PFETCH_READY;
-
- start:
- if (PEND) {
- tok->type = TK_EOT;
- return tok->type;
- }
-
- tok->type = TK_STRING;
- tok->base = 0;
- tok->backp = p;
-
- PFETCH(c);
- if (IS_MC_ESC_CODE(c, syn)) {
- if (PEND) return ONIGERR_END_PATTERN_AT_ESCAPE;
-
- tok->backp = p;
- PFETCH(c);
-
- tok->u.c = c;
- tok->escaped = 1;
- switch (c) {
- case '*':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_ASTERISK_ZERO_INF)) break;
- tok->type = TK_OP_REPEAT;
- tok->u.repeat.lower = 0;
- tok->u.repeat.upper = REPEAT_INFINITE;
- goto greedy_check;
- break;
-
- case '+':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_PLUS_ONE_INF)) break;
- tok->type = TK_OP_REPEAT;
- tok->u.repeat.lower = 1;
- tok->u.repeat.upper = REPEAT_INFINITE;
- goto greedy_check;
- break;
-
- case '?':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_QMARK_ZERO_ONE)) break;
- tok->type = TK_OP_REPEAT;
- tok->u.repeat.lower = 0;
- tok->u.repeat.upper = 1;
- greedy_check:
- if (!PEND && PPEEK_IS('?') &&
- IS_SYNTAX_OP(syn, ONIG_SYN_OP_QMARK_NON_GREEDY)) {
- PFETCH(c);
- tok->u.repeat.greedy = 0;
- tok->u.repeat.possessive = 0;
- }
- else {
- possessive_check:
- if (!PEND && PPEEK_IS('+') &&
- ((IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_PLUS_POSSESSIVE_REPEAT) &&
- tok->type != TK_INTERVAL) ||
- (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_PLUS_POSSESSIVE_INTERVAL) &&
- tok->type == TK_INTERVAL))) {
- PFETCH(c);
- tok->u.repeat.greedy = 1;
- tok->u.repeat.possessive = 1;
- }
- else {
- tok->u.repeat.greedy = 1;
- tok->u.repeat.possessive = 0;
- }
- }
- break;
-
- case '{':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_BRACE_INTERVAL)) break;
- r = fetch_range_quantifier(&p, end, tok, env);
- if (r < 0) return r; /* error */
- if (r == 0) goto greedy_check;
- else if (r == 2) { /* {n} */
- if (IS_SYNTAX_BV(syn, ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY))
- goto possessive_check;
-
- goto greedy_check;
- }
- /* r == 1 : normal char */
- break;
-
- case '|':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_VBAR_ALT)) break;
- tok->type = TK_ALT;
- break;
-
- case '(':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_LPAREN_SUBEXP)) break;
- tok->type = TK_SUBEXP_OPEN;
- break;
-
- case ')':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_LPAREN_SUBEXP)) break;
- tok->type = TK_SUBEXP_CLOSE;
- break;
-
- case 'w':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_W_WORD)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_WORD;
- tok->u.prop.not = 0;
- break;
-
- case 'W':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_W_WORD)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_WORD;
- tok->u.prop.not = 1;
- break;
-
- case 'b':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_B_WORD_BOUND)) break;
- tok->type = TK_ANCHOR;
- tok->u.anchor = ANCHOR_WORD_BOUND;
- break;
-
- case 'B':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_B_WORD_BOUND)) break;
- tok->type = TK_ANCHOR;
- tok->u.anchor = ANCHOR_NOT_WORD_BOUND;
- break;
-
-#ifdef USE_WORD_BEGIN_END
- case '<':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END)) break;
- tok->type = TK_ANCHOR;
- tok->u.anchor = ANCHOR_WORD_BEGIN;
- break;
-
- case '>':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END)) break;
- tok->type = TK_ANCHOR;
- tok->u.anchor = ANCHOR_WORD_END;
- break;
-#endif
-
- case 's':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_S_WHITE_SPACE)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_SPACE;
- tok->u.prop.not = 0;
- break;
-
- case 'S':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_S_WHITE_SPACE)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_SPACE;
- tok->u.prop.not = 1;
- break;
-
- case 'd':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_D_DIGIT)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_DIGIT;
- tok->u.prop.not = 0;
- break;
-
- case 'D':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_D_DIGIT)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_DIGIT;
- tok->u.prop.not = 1;
- break;
-
- case 'h':
- if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_H_XDIGIT)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_XDIGIT;
- tok->u.prop.not = 0;
- break;
-
- case 'H':
- if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_H_XDIGIT)) break;
- tok->type = TK_CHAR_TYPE;
- tok->u.prop.ctype = ONIGENC_CTYPE_XDIGIT;
- tok->u.prop.not = 1;
- break;
-
- case 'A':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR)) break;
- begin_buf:
- tok->type = TK_ANCHOR;
- tok->u.subtype = ANCHOR_BEGIN_BUF;
- break;
-
- case 'Z':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR)) break;
- tok->type = TK_ANCHOR;
- tok->u.subtype = ANCHOR_SEMI_END_BUF;
- break;
-
- case 'z':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR)) break;
- end_buf:
- tok->type = TK_ANCHOR;
- tok->u.subtype = ANCHOR_END_BUF;
- break;
-
- case 'G':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_CAPITAL_G_BEGIN_ANCHOR)) break;
- tok->type = TK_ANCHOR;
- tok->u.subtype = ANCHOR_BEGIN_POSITION;
- break;
-
- case '`':
- if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR)) break;
- goto begin_buf;
- break;
-
- case '\'':
- if (! IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR)) break;
- goto end_buf;
- break;
-
- case 'x':
- if (PEND) break;
-
- prev = p;
- if (PPEEK_IS('{') && IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_X_BRACE_HEX8)) {
- PINC;
- num = scan_unsigned_hexadecimal_number(&p, end, 8, enc);
- if (num < 0) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE;
- if (!PEND) {
- if (ONIGENC_IS_CODE_XDIGIT(enc, PPEEK))
- return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE;
- }
-
- if ((p > prev + enclen(enc, prev)) && !PEND && PPEEK_IS('}')) {
- PINC;
- tok->type = TK_CODE_POINT;
- tok->u.code = (OnigCodePoint )num;
- }
- else {
- /* can't read nothing or invalid format */
- p = prev;
- }
- }
- else if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_X_HEX2)) {
- num = scan_unsigned_hexadecimal_number(&p, end, 2, enc);
- if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
- if (p == prev) { /* can't read nothing. */
- num = 0; /* but, it's not error */
- }
- tok->type = TK_RAW_BYTE;
- tok->base = 16;
- tok->u.c = num;
- }
- break;
-
- case 'u':
- if (PEND) break;
-
- prev = p;
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_U_HEX4)) {
- num = scan_unsigned_hexadecimal_number(&p, end, 4, enc);
- if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
- if (p == prev) { /* can't read nothing. */
- num = 0; /* but, it's not error */
- }
- tok->type = TK_CODE_POINT;
- tok->base = 16;
- tok->u.code = (OnigCodePoint )num;
- }
- break;
-
- case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- PUNFETCH;
- prev = p;
- num = onig_scan_unsigned_number(&p, end, enc);
- if (num < 0 || num > ONIG_MAX_BACKREF_NUM) {
- goto skip_backref;
- }
-
- if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_DECIMAL_BACKREF) &&
- (num <= env->num_mem || num <= 9)) { /* This spec. from GNU regex */
- if (IS_SYNTAX_BV(syn, ONIG_SYN_STRICT_CHECK_BACKREF)) {
- if (num > env->num_mem || IS_NULL(SCANENV_MEM_NODES(env)[num]))
- return ONIGERR_INVALID_BACKREF;
- }
-
- tok->type = TK_BACKREF;
- tok->u.backref.num = 1;
- tok->u.backref.ref1 = num;
- tok->u.backref.by_name = 0;
-#ifdef USE_BACKREF_WITH_LEVEL
- tok->u.backref.exist_level = 0;
-#endif
- break;
- }
-
- skip_backref:
- if (c == '8' || c == '9') {
- /* normal char */
- p = prev; PINC;
- break;
- }
-
- p = prev;
- /* fall through */
- case '0':
- if (IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_OCTAL3)) {
- prev = p;
- num = scan_unsigned_octal_number(&p, end, (c == '0' ? 2:3), enc);
- if (num < 0) return ONIGERR_TOO_BIG_NUMBER;
- if (p == prev) { /* can't read nothing. */
- num = 0; /* but, it's not error */
- }
- tok->type = TK_RAW_BYTE;
- tok->base = 8;
- tok->u.c = num;
- }
- else if (c != '0') {
- PINC;
- }
- break;
-
-#ifdef USE_NAMED_GROUP
- case 'k':
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_K_NAMED_BACKREF)) {
- PFETCH(c);
- if (c == '<' || c == '\'') {
- UChar* name_end;
- int* backs;
- int back_num;
-
- prev = p;
-
-#ifdef USE_BACKREF_WITH_LEVEL
- name_end = NULL_UCHARP; /* no need. escape gcc warning. */
- r = fetch_name_with_level((OnigCodePoint )c, &p, end, &name_end,
- env, &back_num, &tok->u.backref.level);
- if (r == 1) tok->u.backref.exist_level = 1;
- else tok->u.backref.exist_level = 0;
-#else
- r = fetch_name(&p, end, &name_end, env, &back_num, 1);
-#endif
- if (r < 0) return r;
-
- if (back_num != 0) {
- if (back_num < 0) {
- back_num = BACKREF_REL_TO_ABS(back_num, env);
- if (back_num <= 0)
- return ONIGERR_INVALID_BACKREF;
- }
-
- if (IS_SYNTAX_BV(syn, ONIG_SYN_STRICT_CHECK_BACKREF)) {
- if (back_num > env->num_mem ||
- IS_NULL(SCANENV_MEM_NODES(env)[back_num]))
- return ONIGERR_INVALID_BACKREF;
- }
- tok->type = TK_BACKREF;
- tok->u.backref.by_name = 0;
- tok->u.backref.num = 1;
- tok->u.backref.ref1 = back_num;
- }
- else {
- num = onig_name_to_group_numbers(env->reg, prev, name_end, &backs);
- if (num <= 0) {
- onig_scan_env_set_error_string(env,
- ONIGERR_UNDEFINED_NAME_REFERENCE, prev, name_end);
- return ONIGERR_UNDEFINED_NAME_REFERENCE;
- }
- if (IS_SYNTAX_BV(syn, ONIG_SYN_STRICT_CHECK_BACKREF)) {
- int i;
- for (i = 0; i < num; i++) {
- if (backs[i] > env->num_mem ||
- IS_NULL(SCANENV_MEM_NODES(env)[backs[i]]))
- return ONIGERR_INVALID_BACKREF;
- }
- }
-
- tok->type = TK_BACKREF;
- tok->u.backref.by_name = 1;
- if (num == 1) {
- tok->u.backref.num = 1;
- tok->u.backref.ref1 = backs[0];
- }
- else {
- tok->u.backref.num = num;
- tok->u.backref.refs = backs;
- }
- }
- }
- else
- PUNFETCH;
- }
- break;
-#endif
-
-#ifdef USE_SUBEXP_CALL
- case 'g':
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_G_SUBEXP_CALL)) {
- PFETCH(c);
- if (c == '<' || c == '\'') {
- int gnum;
- UChar* name_end;
-
- prev = p;
- r = fetch_name((OnigCodePoint )c, &p, end, &name_end, env, &gnum, 1);
- if (r < 0) return r;
-
- tok->type = TK_CALL;
- tok->u.call.name = prev;
- tok->u.call.name_end = name_end;
- tok->u.call.gnum = gnum;
- }
- else
- PUNFETCH;
- }
- break;
-#endif
-
- case 'Q':
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_CAPITAL_Q_QUOTE)) {
- tok->type = TK_QUOTE_OPEN;
- }
- break;
-
- case 'p':
- case 'P':
- if (PPEEK_IS('{') &&
- IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY)) {
- PINC;
- tok->type = TK_CHAR_PROPERTY;
- tok->u.prop.not = (c == 'P' ? 1 : 0);
-
- if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT)) {
- PFETCH(c);
- if (c == '^') {
- tok->u.prop.not = (tok->u.prop.not == 0 ? 1 : 0);
- }
- else
- PUNFETCH;
- }
- }
- break;
-
- default:
- PUNFETCH;
- num = fetch_escaped_value(&p, end, env);
- if (num < 0) return num;
- /* set_raw: */
- if (tok->u.c != num) {
- tok->type = TK_CODE_POINT;
- tok->u.code = (OnigCodePoint )num;
- }
- else { /* string */
- p = tok->backp + enclen(enc, tok->backp);
- }
- break;
- }
- }
- else {
- tok->u.c = c;
- tok->escaped = 0;
-
-#ifdef USE_VARIABLE_META_CHARS
- if ((c != ONIG_INEFFECTIVE_META_CHAR) &&
- IS_SYNTAX_OP(syn, ONIG_SYN_OP_VARIABLE_META_CHARACTERS)) {
- if (c == MC_ANYCHAR(syn))
- goto any_char;
- else if (c == MC_ANYTIME(syn))
- goto anytime;
- else if (c == MC_ZERO_OR_ONE_TIME(syn))
- goto zero_or_one_time;
- else if (c == MC_ONE_OR_MORE_TIME(syn))
- goto one_or_more_time;
- else if (c == MC_ANYCHAR_ANYTIME(syn)) {
- tok->type = TK_ANYCHAR_ANYTIME;
- goto out;
- }
- }
-#endif
-
- switch (c) {
- case '.':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_DOT_ANYCHAR)) break;
-#ifdef USE_VARIABLE_META_CHARS
- any_char:
-#endif
- tok->type = TK_ANYCHAR;
- break;
-
- case '*':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ASTERISK_ZERO_INF)) break;
-#ifdef USE_VARIABLE_META_CHARS
- anytime:
-#endif
- tok->type = TK_OP_REPEAT;
- tok->u.repeat.lower = 0;
- tok->u.repeat.upper = REPEAT_INFINITE;
- goto greedy_check;
- break;
-
- case '+':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_PLUS_ONE_INF)) break;
-#ifdef USE_VARIABLE_META_CHARS
- one_or_more_time:
-#endif
- tok->type = TK_OP_REPEAT;
- tok->u.repeat.lower = 1;
- tok->u.repeat.upper = REPEAT_INFINITE;
- goto greedy_check;
- break;
-
- case '?':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_QMARK_ZERO_ONE)) break;
-#ifdef USE_VARIABLE_META_CHARS
- zero_or_one_time:
-#endif
- tok->type = TK_OP_REPEAT;
- tok->u.repeat.lower = 0;
- tok->u.repeat.upper = 1;
- goto greedy_check;
- break;
-
- case '{':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_BRACE_INTERVAL)) break;
- r = fetch_range_quantifier(&p, end, tok, env);
- if (r < 0) return r; /* error */
- if (r == 0) goto greedy_check;
- else if (r == 2) { /* {n} */
- if (IS_SYNTAX_BV(syn, ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY))
- goto possessive_check;
-
- goto greedy_check;
- }
- /* r == 1 : normal char */
- break;
-
- case '|':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_VBAR_ALT)) break;
- tok->type = TK_ALT;
- break;
-
- case '(':
- if (PPEEK_IS('?') &&
- IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_QMARK_GROUP_EFFECT)) {
- PINC;
- if (PPEEK_IS('#')) {
- PFETCH(c);
- while (1) {
- if (PEND) return ONIGERR_END_PATTERN_IN_GROUP;
- PFETCH(c);
- if (c == MC_ESC(syn)) {
- if (!PEND) PFETCH(c);
- }
- else {
- if (c == ')') break;
- }
- }
- goto start;
- }
- PUNFETCH;
- }
-
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_LPAREN_SUBEXP)) break;
- tok->type = TK_SUBEXP_OPEN;
- break;
-
- case ')':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_LPAREN_SUBEXP)) break;
- tok->type = TK_SUBEXP_CLOSE;
- break;
-
- case '^':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_LINE_ANCHOR)) break;
- tok->type = TK_ANCHOR;
- tok->u.subtype = (IS_SINGLELINE(env->option)
- ? ANCHOR_BEGIN_BUF : ANCHOR_BEGIN_LINE);
- break;
-
- case '$':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_LINE_ANCHOR)) break;
- tok->type = TK_ANCHOR;
- tok->u.subtype = (IS_SINGLELINE(env->option)
- ? ANCHOR_SEMI_END_BUF : ANCHOR_END_LINE);
- break;
-
- case '[':
- if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_BRACKET_CC)) break;
- tok->type = TK_CC_OPEN;
- break;
-
- case ']':
- if (*src > env->pattern) /* /].../ is allowed. */
- CLOSE_BRACKET_WITHOUT_ESC_WARN(env, (UChar* )"]");
- break;
-
- case '#':
- if (IS_EXTEND(env->option)) {
- while (!PEND) {
- PFETCH(c);
- if (ONIGENC_IS_CODE_NEWLINE(enc, c))
- break;
- }
- goto start;
- break;
- }
- break;
-
- case ' ': case '\t': case '\n': case '\r': case '\f':
- if (IS_EXTEND(env->option))
- goto start;
- break;
-
- default:
- /* string */
- break;
- }
- }
-
-#ifdef USE_VARIABLE_META_CHARS
- out:
-#endif
- *src = p;
- return tok->type;
-}
-
-static int
-add_ctype_to_cc_by_range(CClassNode* cc, int ctype ARG_UNUSED, int not,
- OnigEncoding enc ARG_UNUSED,
- OnigCodePoint sb_out, const OnigCodePoint mbr[])
-{
- int i, r;
- OnigCodePoint j;
-
- int n = ONIGENC_CODE_RANGE_NUM(mbr);
-
- if (not == 0) {
- for (i = 0; i < n; i++) {
- for (j = ONIGENC_CODE_RANGE_FROM(mbr, i);
- j <= ONIGENC_CODE_RANGE_TO(mbr, i); j++) {
- if (j >= sb_out) {
- if (j == ONIGENC_CODE_RANGE_TO(mbr, i)) i++;
- else if (j > ONIGENC_CODE_RANGE_FROM(mbr, i)) {
- r = add_code_range_to_buf(&(cc->mbuf), j,
- ONIGENC_CODE_RANGE_TO(mbr, i));
- if (r != 0) return r;
- i++;
- }
-
- goto sb_end;
- }
- BITSET_SET_BIT(cc->bs, j);
- }
- }
-
- sb_end:
- for ( ; i < n; i++) {
- r = add_code_range_to_buf(&(cc->mbuf),
- ONIGENC_CODE_RANGE_FROM(mbr, i),
- ONIGENC_CODE_RANGE_TO(mbr, i));
- if (r != 0) return r;
- }
- }
- else {
- OnigCodePoint prev = 0;
-
- for (i = 0; i < n; i++) {
- for (j = prev;
- j < ONIGENC_CODE_RANGE_FROM(mbr, i); j++) {
- if (j >= sb_out) {
- goto sb_end2;
- }
- BITSET_SET_BIT(cc->bs, j);
- }
- prev = ONIGENC_CODE_RANGE_TO(mbr, i) + 1;
- }
- for (j = prev; j < sb_out; j++) {
- BITSET_SET_BIT(cc->bs, j);
- }
-
- sb_end2:
- prev = sb_out;
-
- for (i = 0; i < n; i++) {
- if (prev < ONIGENC_CODE_RANGE_FROM(mbr, i)) {
- r = add_code_range_to_buf(&(cc->mbuf), prev,
- ONIGENC_CODE_RANGE_FROM(mbr, i) - 1);
- if (r != 0) return r;
- }
- prev = ONIGENC_CODE_RANGE_TO(mbr, i) + 1;
- }
- if (prev < 0x7fffffff) {
- r = add_code_range_to_buf(&(cc->mbuf), prev, 0x7fffffff);
- if (r != 0) return r;
- }
- }
-
- return 0;
-}
-
-static int
-add_ctype_to_cc(CClassNode* cc, int ctype, int not, ScanEnv* env)
-{
- int c, r;
- const OnigCodePoint *ranges;
- OnigCodePoint sb_out;
- OnigEncoding enc = env->enc;
-
- r = ONIGENC_GET_CTYPE_CODE_RANGE(enc, ctype, &sb_out, &ranges);
- if (r == 0) {
- return add_ctype_to_cc_by_range(cc, ctype, not, env->enc, sb_out, ranges);
- }
- else if (r != ONIG_NO_SUPPORT_CONFIG) {
- return r;
- }
-
- r = 0;
- switch (ctype) {
- case ONIGENC_CTYPE_ALPHA:
- case ONIGENC_CTYPE_BLANK:
- case ONIGENC_CTYPE_CNTRL:
- case ONIGENC_CTYPE_DIGIT:
- case ONIGENC_CTYPE_LOWER:
- case ONIGENC_CTYPE_PUNCT:
- case ONIGENC_CTYPE_SPACE:
- case ONIGENC_CTYPE_UPPER:
- case ONIGENC_CTYPE_XDIGIT:
- case ONIGENC_CTYPE_ASCII:
- case ONIGENC_CTYPE_ALNUM:
- if (not != 0) {
- for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
- if (! ONIGENC_IS_CODE_CTYPE(enc, (OnigCodePoint )c, ctype))
- BITSET_SET_BIT(cc->bs, c);
- }
- ADD_ALL_MULTI_BYTE_RANGE(enc, cc->mbuf);
- }
- else {
- for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
- if (ONIGENC_IS_CODE_CTYPE(enc, (OnigCodePoint )c, ctype))
- BITSET_SET_BIT(cc->bs, c);
- }
- }
- break;
-
- case ONIGENC_CTYPE_GRAPH:
- case ONIGENC_CTYPE_PRINT:
- if (not != 0) {
- for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
- if (! ONIGENC_IS_CODE_CTYPE(enc, (OnigCodePoint )c, ctype))
- BITSET_SET_BIT(cc->bs, c);
- }
- }
- else {
- for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
- if (ONIGENC_IS_CODE_CTYPE(enc, (OnigCodePoint )c, ctype))
- BITSET_SET_BIT(cc->bs, c);
- }
- ADD_ALL_MULTI_BYTE_RANGE(enc, cc->mbuf);
- }
- break;
-
- case ONIGENC_CTYPE_WORD:
- if (not == 0) {
- for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
- if (IS_CODE_SB_WORD(enc, c)) BITSET_SET_BIT(cc->bs, c);
- }
- ADD_ALL_MULTI_BYTE_RANGE(enc, cc->mbuf);
- }
- else {
- for (c = 0; c < SINGLE_BYTE_SIZE; c++) {
- if ((ONIGENC_CODE_TO_MBCLEN(enc, c) > 0) /* check invalid code point */
- && ! ONIGENC_IS_CODE_WORD(enc, c))
- BITSET_SET_BIT(cc->bs, c);
- }
- }
- break;
-
- default:
- return ONIGERR_PARSER_BUG;
- break;
- }
-
- return r;
-}
-
-static int
-parse_posix_bracket(CClassNode* cc, UChar** src, UChar* end, ScanEnv* env)
-{
-#define POSIX_BRACKET_CHECK_LIMIT_LENGTH 20
-#define POSIX_BRACKET_NAME_MIN_LEN 4
-
- static PosixBracketEntryType PBS[] = {
- { (UChar* )"alnum", ONIGENC_CTYPE_ALNUM, 5 },
- { (UChar* )"alpha", ONIGENC_CTYPE_ALPHA, 5 },
- { (UChar* )"blank", ONIGENC_CTYPE_BLANK, 5 },
- { (UChar* )"cntrl", ONIGENC_CTYPE_CNTRL, 5 },
- { (UChar* )"digit", ONIGENC_CTYPE_DIGIT, 5 },
- { (UChar* )"graph", ONIGENC_CTYPE_GRAPH, 5 },
- { (UChar* )"lower", ONIGENC_CTYPE_LOWER, 5 },
- { (UChar* )"print", ONIGENC_CTYPE_PRINT, 5 },
- { (UChar* )"punct", ONIGENC_CTYPE_PUNCT, 5 },
- { (UChar* )"space", ONIGENC_CTYPE_SPACE, 5 },
- { (UChar* )"upper", ONIGENC_CTYPE_UPPER, 5 },
- { (UChar* )"xdigit", ONIGENC_CTYPE_XDIGIT, 6 },
- { (UChar* )"ascii", ONIGENC_CTYPE_ASCII, 5 },
- { (UChar* )"word", ONIGENC_CTYPE_WORD, 4 },
- { (UChar* )NULL, -1, 0 }
- };
-
- PosixBracketEntryType *pb;
- int not, i, r;
- OnigCodePoint c;
- OnigEncoding enc = env->enc;
- UChar *p = *src;
-
- if (PPEEK_IS('^')) {
- PINC_S;
- not = 1;
- }
- else
- not = 0;
-
- if (onigenc_strlen(enc, p, end) < POSIX_BRACKET_NAME_MIN_LEN + 3)
- goto not_posix_bracket;
-
- for (pb = PBS; IS_NOT_NULL(pb->name); pb++) {
- if (onigenc_with_ascii_strncmp(enc, p, end, pb->name, pb->len) == 0) {
- p = (UChar* )onigenc_step(enc, p, end, pb->len);
- if (onigenc_with_ascii_strncmp(enc, p, end, (UChar* )":]", 2) != 0)
- return ONIGERR_INVALID_POSIX_BRACKET_TYPE;
-
- r = add_ctype_to_cc(cc, pb->ctype, not, env);
- if (r != 0) return r;
-
- PINC_S; PINC_S;
- *src = p;
- return 0;
- }
- }
-
- not_posix_bracket:
- c = 0;
- i = 0;
- while (!PEND && ((c = PPEEK) != ':') && c != ']') {
- PINC_S;
- if (++i > POSIX_BRACKET_CHECK_LIMIT_LENGTH) break;
- }
- if (c == ':' && ! PEND) {
- PINC_S;
- if (! PEND) {
- PFETCH_S(c);
- if (c == ']')
- return ONIGERR_INVALID_POSIX_BRACKET_TYPE;
- }
- }
-
- return 1; /* 1: is not POSIX bracket, but no error. */
-}
-
-static int
-fetch_char_property_to_ctype(UChar** src, UChar* end, ScanEnv* env)
-{
- int r;
- OnigCodePoint c;
- OnigEncoding enc = env->enc;
- UChar *prev, *start, *p = *src;
-
- r = 0;
- start = prev = p;
-
- while (!PEND) {
- prev = p;
- PFETCH_S(c);
- if (c == '}') {
- r = ONIGENC_PROPERTY_NAME_TO_CTYPE(enc, start, prev);
- if (r < 0) break;
-
- *src = p;
- return r;
- }
- else if (c == '(' || c == ')' || c == '{' || c == '|') {
- r = ONIGERR_INVALID_CHAR_PROPERTY_NAME;
- break;
- }
- }
-
- onig_scan_env_set_error_string(env, r, *src, prev);
- return r;
-}
-
-static int
-parse_char_property(Node** np, OnigToken* tok, UChar** src, UChar* end,
- ScanEnv* env)
-{
- int r, ctype;
- CClassNode* cc;
-
- ctype = fetch_char_property_to_ctype(src, end, env);
- if (ctype < 0) return ctype;
-
- *np = node_new_cclass();
- CHECK_NULL_RETURN_MEMERR(*np);
- cc = NCCLASS(*np);
- r = add_ctype_to_cc(cc, ctype, 0, env);
- if (r != 0) return r;
- if (tok->u.prop.not != 0) NCCLASS_SET_NOT(cc);
-
- return 0;
-}
-
-
-enum CCSTATE {
- CCS_VALUE,
- CCS_RANGE,
- CCS_COMPLETE,
- CCS_START
-};
-
-enum CCVALTYPE {
- CCV_SB,
- CCV_CODE_POINT,
- CCV_CLASS
-};
-
-static int
-next_state_class(CClassNode* cc, OnigCodePoint* vs, enum CCVALTYPE* type,
- enum CCSTATE* state, ScanEnv* env)
-{
- int r;
-
- if (*state == CCS_RANGE)
- return ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE;
-
- if (*state == CCS_VALUE && *type != CCV_CLASS) {
- if (*type == CCV_SB)
- BITSET_SET_BIT(cc->bs, (int )(*vs));
- else if (*type == CCV_CODE_POINT) {
- r = add_code_range(&(cc->mbuf), env, *vs, *vs);
- if (r < 0) return r;
- }
- }
-
- *state = CCS_VALUE;
- *type = CCV_CLASS;
- return 0;
-}
-
-static int
-next_state_val(CClassNode* cc, OnigCodePoint *vs, OnigCodePoint v,
- int* vs_israw, int v_israw,
- enum CCVALTYPE intype, enum CCVALTYPE* type,
- enum CCSTATE* state, ScanEnv* env)
-{
- int r;
-
- switch (*state) {
- case CCS_VALUE:
- if (*type == CCV_SB)
- BITSET_SET_BIT(cc->bs, (int )(*vs));
- else if (*type == CCV_CODE_POINT) {
- r = add_code_range(&(cc->mbuf), env, *vs, *vs);
- if (r < 0) return r;
- }
- break;
-
- case CCS_RANGE:
- if (intype == *type) {
- if (intype == CCV_SB) {
- if (*vs > 0xff || v > 0xff)
- return ONIGERR_INVALID_CODE_POINT_VALUE;
-
- if (*vs > v) {
- if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC))
- goto ccs_range_end;
- else
- return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS;
- }
- bitset_set_range(cc->bs, (int )*vs, (int )v);
- }
- else {
- r = add_code_range(&(cc->mbuf), env, *vs, v);
- if (r < 0) return r;
- }
- }
- else {
-#if 0
- if (intype == CCV_CODE_POINT && *type == CCV_SB) {
-#endif
- if (*vs > v) {
- if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC))
- goto ccs_range_end;
- else
- return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS;
- }
- bitset_set_range(cc->bs, (int )*vs, (int )(v < 0xff ? v : 0xff));
- r = add_code_range(&(cc->mbuf), env, (OnigCodePoint )*vs, v);
- if (r < 0) return r;
-#if 0
- }
- else
- return ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE;
-#endif
- }
- ccs_range_end:
- *state = CCS_COMPLETE;
- break;
-
- case CCS_COMPLETE:
- case CCS_START:
- *state = CCS_VALUE;
- break;
-
- default:
- break;
- }
-
- *vs_israw = v_israw;
- *vs = v;
- *type = intype;
- return 0;
-}
-
-static int
-code_exist_check(OnigCodePoint c, UChar* from, UChar* end, int ignore_escaped,
- ScanEnv* env)
-{
- int in_esc;
- OnigCodePoint code;
- OnigEncoding enc = env->enc;
- UChar* p = from;
-
- in_esc = 0;
- while (! PEND) {
- if (ignore_escaped && in_esc) {
- in_esc = 0;
- }
- else {
- PFETCH_S(code);
- if (code == c) return 1;
- if (code == MC_ESC(env->syntax)) in_esc = 1;
- }
- }
- return 0;
-}
-
-static int
-parse_char_class(Node** np, OnigToken* tok, UChar** src, UChar* end,
- ScanEnv* env)
-{
- int r, neg, len, fetched, and_start;
- OnigCodePoint v, vs;
- UChar *p;
- Node* node;
- CClassNode *cc, *prev_cc;
- CClassNode work_cc;
-
- enum CCSTATE state;
- enum CCVALTYPE val_type, in_type;
- int val_israw, in_israw;
-
- prev_cc = (CClassNode* )NULL;
- *np = NULL_NODE;
- r = fetch_token_in_cc(tok, src, end, env);
- if (r == TK_CHAR && tok->u.c == '^' && tok->escaped == 0) {
- neg = 1;
- r = fetch_token_in_cc(tok, src, end, env);
- }
- else {
- neg = 0;
- }
-
- if (r < 0) return r;
- if (r == TK_CC_CLOSE) {
- if (! code_exist_check((OnigCodePoint )']',
- *src, env->pattern_end, 1, env))
- return ONIGERR_EMPTY_CHAR_CLASS;
-
- CC_ESC_WARN(env, (UChar* )"]");
- r = tok->type = TK_CHAR; /* allow []...] */
- }
-
- *np = node = node_new_cclass();
- CHECK_NULL_RETURN_MEMERR(node);
- cc = NCCLASS(node);
-
- and_start = 0;
- state = CCS_START;
- p = *src;
- while (r != TK_CC_CLOSE) {
- fetched = 0;
- switch (r) {
- case TK_CHAR:
- len = ONIGENC_CODE_TO_MBCLEN(env->enc, tok->u.c);
- if (len > 1) {
- in_type = CCV_CODE_POINT;
- }
- else if (len < 0) {
- r = len;
- goto err;
- }
- else {
- sb_char:
- in_type = CCV_SB;
- }
- v = (OnigCodePoint )tok->u.c;
- in_israw = 0;
- goto val_entry2;
- break;
-
- case TK_RAW_BYTE:
- /* tok->base != 0 : octal or hexadec. */
- if (! ONIGENC_IS_SINGLEBYTE(env->enc) && tok->base != 0) {
- UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN];
- UChar* bufe = buf + ONIGENC_CODE_TO_MBC_MAXLEN;
- UChar* psave = p;
- int i, base = tok->base;
-
- buf[0] = tok->u.c;
- for (i = 1; i < ONIGENC_MBC_MAXLEN(env->enc); i++) {
- r = fetch_token_in_cc(tok, &p, end, env);
- if (r < 0) goto err;
- if (r != TK_RAW_BYTE || tok->base != base) {
- fetched = 1;
- break;
- }
- buf[i] = tok->u.c;
- }
-
- if (i < ONIGENC_MBC_MINLEN(env->enc)) {
- r = ONIGERR_TOO_SHORT_MULTI_BYTE_STRING;
- goto err;
- }
-
- len = enclen(env->enc, buf);
- if (i < len) {
- r = ONIGERR_TOO_SHORT_MULTI_BYTE_STRING;
- goto err;
- }
- else if (i > len) { /* fetch back */
- p = psave;
- for (i = 1; i < len; i++) {
- r = fetch_token_in_cc(tok, &p, end, env);
- }
- fetched = 0;
- }
-
- if (i == 1) {
- v = (OnigCodePoint )buf[0];
- goto raw_single;
- }
- else {
- v = ONIGENC_MBC_TO_CODE(env->enc, buf, bufe);
- in_type = CCV_CODE_POINT;
- }
- }
- else {
- v = (OnigCodePoint )tok->u.c;
- raw_single:
- in_type = CCV_SB;
- }
- in_israw = 1;
- goto val_entry2;
- break;
-
- case TK_CODE_POINT:
- v = tok->u.code;
- in_israw = 1;
- val_entry:
- len = ONIGENC_CODE_TO_MBCLEN(env->enc, v);
- if (len < 0) {
- r = len;
- goto err;
- }
- in_type = (len == 1 ? CCV_SB : CCV_CODE_POINT);
- val_entry2:
- r = next_state_val(cc, &vs, v, &val_israw, in_israw, in_type, &val_type,
- &state, env);
- if (r != 0) goto err;
- break;
-
- case TK_POSIX_BRACKET_OPEN:
- r = parse_posix_bracket(cc, &p, end, env);
- if (r < 0) goto err;
- if (r == 1) { /* is not POSIX bracket */
- CC_ESC_WARN(env, (UChar* )"[");
- p = tok->backp;
- v = (OnigCodePoint )tok->u.c;
- in_israw = 0;
- goto val_entry;
- }
- goto next_class;
- break;
-
- case TK_CHAR_TYPE:
- r = add_ctype_to_cc(cc, tok->u.prop.ctype, tok->u.prop.not, env);
- if (r != 0) return r;
-
- next_class:
- r = next_state_class(cc, &vs, &val_type, &state, env);
- if (r != 0) goto err;
- break;
-
- case TK_CHAR_PROPERTY:
- {
- int ctype;
-
- ctype = fetch_char_property_to_ctype(&p, end, env);
- if (ctype < 0) return ctype;
- r = add_ctype_to_cc(cc, ctype, tok->u.prop.not, env);
- if (r != 0) return r;
- goto next_class;
- }
- break;
-
- case TK_CC_RANGE:
- if (state == CCS_VALUE) {
- r = fetch_token_in_cc(tok, &p, end, env);
- if (r < 0) goto err;
- fetched = 1;
- if (r == TK_CC_CLOSE) { /* allow [x-] */
- range_end_val:
- v = (OnigCodePoint )'-';
- in_israw = 0;
- goto val_entry;
- }
- else if (r == TK_CC_AND) {
- CC_ESC_WARN(env, (UChar* )"-");
- goto range_end_val;
- }
- state = CCS_RANGE;
- }
- else if (state == CCS_START) {
- /* [-xa] is allowed */
- v = (OnigCodePoint )tok->u.c;
- in_israw = 0;
-
- r = fetch_token_in_cc(tok, &p, end, env);
- if (r < 0) goto err;
- fetched = 1;
- /* [--x] or [a&&-x] is warned. */
- if (r == TK_CC_RANGE || and_start != 0)
- CC_ESC_WARN(env, (UChar* )"-");
-
- goto val_entry;
- }
- else if (state == CCS_RANGE) {
- CC_ESC_WARN(env, (UChar* )"-");
- goto sb_char; /* [!--x] is allowed */
- }
- else { /* CCS_COMPLETE */
- r = fetch_token_in_cc(tok, &p, end, env);
- if (r < 0) goto err;
- fetched = 1;
- if (r == TK_CC_CLOSE) goto range_end_val; /* allow [a-b-] */
- else if (r == TK_CC_AND) {
- CC_ESC_WARN(env, (UChar* )"-");
- goto range_end_val;
- }
-
- if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_DOUBLE_RANGE_OP_IN_CC)) {
- CC_ESC_WARN(env, (UChar* )"-");
- goto sb_char; /* [0-9-a] is allowed as [0-9\-a] */
- }
- r = ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS;
- goto err;
- }
- break;
-
- case TK_CC_CC_OPEN: /* [ */
- {
- Node *anode;
- CClassNode* acc;
-
- r = parse_char_class(&anode, tok, &p, end, env);
- if (r != 0) goto cc_open_err;
- acc = NCCLASS(anode);
- r = or_cclass(cc, acc, env->enc);
-
- onig_node_free(anode);
- cc_open_err:
- if (r != 0) goto err;
- }
- break;
-
- case TK_CC_AND: /* && */
- {
- if (state == CCS_VALUE) {
- r = next_state_val(cc, &vs, 0, &val_israw, 0, val_type,
- &val_type, &state, env);
- if (r != 0) goto err;
- }
- /* initialize local variables */
- and_start = 1;
- state = CCS_START;
-
- if (IS_NOT_NULL(prev_cc)) {
- r = and_cclass(prev_cc, cc, env->enc);
- if (r != 0) goto err;
- bbuf_free(cc->mbuf);
- }
- else {
- prev_cc = cc;
- cc = &work_cc;
- }
- initialize_cclass(cc);
- }
- break;
-
- case TK_EOT:
- r = ONIGERR_PREMATURE_END_OF_CHAR_CLASS;
- goto err;
- break;
- default:
- r = ONIGERR_PARSER_BUG;
- goto err;
- break;
- }
-
- if (fetched)
- r = tok->type;
- else {
- r = fetch_token_in_cc(tok, &p, end, env);
- if (r < 0) goto err;
- }
- }
-
- if (state == CCS_VALUE) {
- r = next_state_val(cc, &vs, 0, &val_israw, 0, val_type,
- &val_type, &state, env);
- if (r != 0) goto err;
- }
-
- if (IS_NOT_NULL(prev_cc)) {
- r = and_cclass(prev_cc, cc, env->enc);
- if (r != 0) goto err;
- bbuf_free(cc->mbuf);
- cc = prev_cc;
- }
-
- if (neg != 0)
- NCCLASS_SET_NOT(cc);
- else
- NCCLASS_CLEAR_NOT(cc);
- if (IS_NCCLASS_NOT(cc) &&
- IS_SYNTAX_BV(env->syntax, ONIG_SYN_NOT_NEWLINE_IN_NEGATIVE_CC)) {
- int is_empty;
-
- is_empty = (IS_NULL(cc->mbuf) ? 1 : 0);
- if (is_empty != 0)
- BITSET_IS_EMPTY(cc->bs, is_empty);
-
- if (is_empty == 0) {
-#define NEWLINE_CODE 0x0a
-
- if (ONIGENC_IS_CODE_NEWLINE(env->enc, NEWLINE_CODE)) {
- if (ONIGENC_CODE_TO_MBCLEN(env->enc, NEWLINE_CODE) == 1)
- BITSET_SET_BIT(cc->bs, NEWLINE_CODE);
- else
- add_code_range(&(cc->mbuf), env, NEWLINE_CODE, NEWLINE_CODE);
- }
- }
- }
- *src = p;
- return 0;
-
- err:
- if (cc != NCCLASS(*np))
- bbuf_free(cc->mbuf);
- onig_node_free(*np);
- return r;
-}
-
-static int parse_subexp(Node** top, OnigToken* tok, int term,
- UChar** src, UChar* end, ScanEnv* env);
-
-static int
-parse_enclose(Node** np, OnigToken* tok, int term, UChar** src, UChar* end,
- ScanEnv* env)
-{
- int r, num;
- Node *target;
- OnigOptionType option;
- OnigCodePoint c;
- OnigEncoding enc = env->enc;
-
-#ifdef USE_NAMED_GROUP
- int list_capture;
-#endif
-
- UChar* p = *src;
- PFETCH_READY;
-
- *np = NULL;
- if (PEND) return ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS;
-
- option = env->option;
- if (PPEEK_IS('?') &&
- IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_QMARK_GROUP_EFFECT)) {
- PINC;
- if (PEND) return ONIGERR_END_PATTERN_IN_GROUP;
-
- PFETCH(c);
- switch (c) {
- case ':': /* (?:...) grouping only */
- group:
- r = fetch_token(tok, &p, end, env);
- if (r < 0) return r;
- r = parse_subexp(np, tok, term, &p, end, env);
- if (r < 0) return r;
- *src = p;
- return 1; /* group */
- break;
-
- case '=':
- *np = onig_node_new_anchor(ANCHOR_PREC_READ);
- break;
- case '!': /* preceding read */
- *np = onig_node_new_anchor(ANCHOR_PREC_READ_NOT);
- break;
- case '>': /* (?>...) stop backtrack */
- *np = node_new_enclose(ENCLOSE_STOP_BACKTRACK);
- break;
-
-#ifdef USE_NAMED_GROUP
- case '\'':
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_QMARK_LT_NAMED_GROUP)) {
- goto named_group1;
- }
- else
- return ONIGERR_UNDEFINED_GROUP_OPTION;
- break;
-#endif
-
- case '<': /* look behind (?<=...), (?<!...) */
- PFETCH(c);
- if (c == '=')
- *np = onig_node_new_anchor(ANCHOR_LOOK_BEHIND);
- else if (c == '!')
- *np = onig_node_new_anchor(ANCHOR_LOOK_BEHIND_NOT);
-#ifdef USE_NAMED_GROUP
- else {
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_QMARK_LT_NAMED_GROUP)) {
- UChar *name;
- UChar *name_end;
-
- PUNFETCH;
- c = '<';
-
- named_group1:
- list_capture = 0;
-
- named_group2:
- name = p;
- r = fetch_name((OnigCodePoint )c, &p, end, &name_end, env, &num, 0);
- if (r < 0) return r;
-
- num = scan_env_add_mem_entry(env);
- if (num < 0) return num;
- if (list_capture != 0 && num >= (int )BIT_STATUS_BITS_NUM)
- return ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY;
-
- r = name_add(env->reg, name, name_end, num, env);
- if (r != 0) return r;
- *np = node_new_enclose_memory(env->option, 1);
- CHECK_NULL_RETURN_MEMERR(*np);
- NENCLOSE(*np)->regnum = num;
- if (list_capture != 0)
- BIT_STATUS_ON_AT_SIMPLE(env->capture_history, num);
- env->num_named++;
- }
- else {
- return ONIGERR_UNDEFINED_GROUP_OPTION;
- }
- }
-#else
- else {
- return ONIGERR_UNDEFINED_GROUP_OPTION;
- }
-#endif
- break;
-
- case '@':
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_ATMARK_CAPTURE_HISTORY)) {
-#ifdef USE_NAMED_GROUP
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_QMARK_LT_NAMED_GROUP)) {
- PFETCH(c);
- if (c == '<' || c == '\'') {
- list_capture = 1;
- goto named_group2; /* (?@<name>...) */
- }
- PUNFETCH;
- }
-#endif
- *np = node_new_enclose_memory(env->option, 0);
- CHECK_NULL_RETURN_MEMERR(*np);
- num = scan_env_add_mem_entry(env);
- if (num < 0) {
- onig_node_free(*np);
- return num;
- }
- else if (num >= (int )BIT_STATUS_BITS_NUM) {
- onig_node_free(*np);
- return ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY;
- }
- NENCLOSE(*np)->regnum = num;
- BIT_STATUS_ON_AT_SIMPLE(env->capture_history, num);
- }
- else {
- return ONIGERR_UNDEFINED_GROUP_OPTION;
- }
- break;
-
-#ifdef USE_POSIXLINE_OPTION
- case 'p':
-#endif
- case '-': case 'i': case 'm': case 's': case 'x':
- {
- int neg = 0;
-
- while (1) {
- switch (c) {
- case ':':
- case ')':
- break;
-
- case '-': neg = 1; break;
- case 'x': ONOFF(option, ONIG_OPTION_EXTEND, neg); break;
- case 'i': ONOFF(option, ONIG_OPTION_IGNORECASE, neg); break;
- case 's':
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_OPTION_PERL)) {
- ONOFF(option, ONIG_OPTION_MULTILINE, neg);
- }
- else
- return ONIGERR_UNDEFINED_GROUP_OPTION;
- break;
-
- case 'm':
- if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_OPTION_PERL)) {
- ONOFF(option, ONIG_OPTION_SINGLELINE, (neg == 0 ? 1 : 0));
- }
- else if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_OPTION_RUBY)) {
- ONOFF(option, ONIG_OPTION_MULTILINE, neg);
- }
- else
- return ONIGERR_UNDEFINED_GROUP_OPTION;
- break;
-#ifdef USE_POSIXLINE_OPTION
- case 'p':
- ONOFF(option, ONIG_OPTION_MULTILINE|ONIG_OPTION_SINGLELINE, neg);
- break;
-#endif
- default:
- return ONIGERR_UNDEFINED_GROUP_OPTION;
- }
-
- if (c == ')') {
- *np = node_new_option(option);
- CHECK_NULL_RETURN_MEMERR(*np);
- *src = p;
- return 2; /* option only */
- }
- else if (c == ':') {
- OnigOptionType prev = env->option;
-
- env->option = option;
- r = fetch_token(tok, &p, end, env);
- if (r < 0) return r;
- r = parse_subexp(&target, tok, term, &p, end, env);
- env->option = prev;
- if (r < 0) return r;
- *np = node_new_option(option);
- CHECK_NULL_RETURN_MEMERR(*np);
- NENCLOSE(*np)->target = target;
- *src = p;
- return 0;
- }
-
- if (PEND) return ONIGERR_END_PATTERN_IN_GROUP;
- PFETCH(c);
- }
- }
- break;
-
- default:
- return ONIGERR_UNDEFINED_GROUP_OPTION;
- }
- }
- else {
- if (ONIG_IS_OPTION_ON(env->option, ONIG_OPTION_DONT_CAPTURE_GROUP))
- goto group;
-
- *np = node_new_enclose_memory(env->option, 0);
- CHECK_NULL_RETURN_MEMERR(*np);
- num = scan_env_add_mem_entry(env);
- if (num < 0) return num;
- NENCLOSE(*np)->regnum = num;
- }
-
- CHECK_NULL_RETURN_MEMERR(*np);
- r = fetch_token(tok, &p, end, env);
- if (r < 0) return r;
- r = parse_subexp(&target, tok, term, &p, end, env);
- if (r < 0) return r;
-
- if (NTYPE(*np) == NT_ANCHOR)
- NANCHOR(*np)->target = target;
- else {
- NENCLOSE(*np)->target = target;
- if (NENCLOSE(*np)->type == ENCLOSE_MEMORY) {
- /* Don't move this to previous of parse_subexp() */
- r = scan_env_set_mem_node(env, NENCLOSE(*np)->regnum, *np);
- if (r != 0) return r;
- }
- }
-
- *src = p;
- return 0;
-}
-
-static const char* PopularQStr[] = {
- "?", "*", "+", "??", "*?", "+?"
-};
-
-static const char* ReduceQStr[] = {
- "", "", "*", "*?", "??", "+ and ??", "+? and ?"
-};
-
-static int
-set_quantifier(Node* qnode, Node* target, int group, ScanEnv* env)
-{
- QtfrNode* qn;
-
- qn = NQTFR(qnode);
- if (qn->lower == 1 && qn->upper == 1) {
- return 1;
- }
-
- switch (NTYPE(target)) {
- case NT_STR:
- if (! group) {
- StrNode* sn = NSTR(target);
- if (str_node_can_be_split(sn, env->enc)) {
- Node* n = str_node_split_last_char(sn, env->enc);
- if (IS_NOT_NULL(n)) {
- qn->target = n;
- return 2;
- }
- }
- }
- break;
-
- case NT_QTFR:
- { /* check redundant double repeat. */
- /* verbose warn (?:.?)? etc... but not warn (.?)? etc... */
- QtfrNode* qnt = NQTFR(target);
- int nestq_num = popular_quantifier_num(qn);
- int targetq_num = popular_quantifier_num(qnt);
-
-#ifdef USE_WARNING_REDUNDANT_NESTED_REPEAT_OPERATOR
- if (!IS_QUANTIFIER_BY_NUMBER(qn) && !IS_QUANTIFIER_BY_NUMBER(qnt) &&
- IS_SYNTAX_BV(env->syntax, ONIG_SYN_WARN_REDUNDANT_NESTED_REPEAT)) {
- UChar buf[WARN_BUFSIZE];
-
- switch(ReduceTypeTable[targetq_num][nestq_num]) {
- case RQ_ASIS:
- break;
-
- case RQ_DEL:
- if (onig_verb_warn != onig_null_warn) {
- onig_snprintf_with_pattern(buf, WARN_BUFSIZE, env->enc,
- env->pattern, env->pattern_end,
- (UChar* )"redundant nested repeat operator");
- (*onig_verb_warn)((char* )buf);
- }
- goto warn_exit;
- break;
-
- default:
- if (onig_verb_warn != onig_null_warn) {
- onig_snprintf_with_pattern(buf, WARN_BUFSIZE, env->enc,
- env->pattern, env->pattern_end,
- (UChar* )"nested repeat operator %s and %s was replaced with '%s'",
- PopularQStr[targetq_num], PopularQStr[nestq_num],
- ReduceQStr[ReduceTypeTable[targetq_num][nestq_num]]);
- (*onig_verb_warn)((char* )buf);
- }
- goto warn_exit;
- break;
- }
- }
-
- warn_exit:
-#endif
- if (targetq_num >= 0) {
- if (nestq_num >= 0) {
- onig_reduce_nested_quantifier(qnode, target);
- goto q_exit;
- }
- else if (targetq_num == 1 || targetq_num == 2) { /* * or + */
- /* (?:a*){n,m}, (?:a+){n,m} => (?:a*){n,n}, (?:a+){n,n} */
- if (! IS_REPEAT_INFINITE(qn->upper) && qn->upper > 1 && qn->greedy) {
- qn->upper = (qn->lower == 0 ? 1 : qn->lower);
- }
- }
- }
- }
- break;
-
- default:
- break;
- }
-
- qn->target = target;
- q_exit:
- return 0;
-}
-
-
-#ifdef USE_SHARED_CCLASS_TABLE
-
-#define THRESHOLD_RANGE_NUM_FOR_SHARE_CCLASS 8
-
-/* for ctype node hash table */
-
-typedef struct {
- OnigEncoding enc;
- int not;
- int type;
-} type_cclass_key;
-
-static int type_cclass_cmp(type_cclass_key* x, type_cclass_key* y)
-{
- if (x->type != y->type) return 1;
- if (x->enc != y->enc) return 1;
- if (x->not != y->not) return 1;
- return 0;
-}
-
-static int type_cclass_hash(type_cclass_key* key)
-{
- int i, val;
- UChar *p;
-
- val = 0;
-
- p = (UChar* )&(key->enc);
- for (i = 0; i < (int )sizeof(key->enc); i++) {
- val = val * 997 + (int )*p++;
- }
-
- p = (UChar* )(&key->type);
- for (i = 0; i < (int )sizeof(key->type); i++) {
- val = val * 997 + (int )*p++;
- }
-
- val += key->not;
- return val + (val >> 5);
-}
-
-static struct st_hash_type type_type_cclass_hash = {
- type_cclass_cmp,
- type_cclass_hash,
-};
-
-static st_table* OnigTypeCClassTable;
-
-
-static int
-i_free_shared_class(type_cclass_key* key, Node* node, void* arg ARG_UNUSED)
-{
- if (IS_NOT_NULL(node)) {
- CClassNode* cc = NCCLASS(node);
- if (IS_NOT_NULL(cc->mbuf)) xfree(cc->mbuf);
- xfree(node);
- }
-
- if (IS_NOT_NULL(key)) xfree(key);
- return ST_DELETE;
-}
-
-extern int
-onig_free_shared_cclass_table(void)
-{
- if (IS_NOT_NULL(OnigTypeCClassTable)) {
- onig_st_foreach(OnigTypeCClassTable, i_free_shared_class, 0);
- onig_st_free_table(OnigTypeCClassTable);
- OnigTypeCClassTable = NULL;
- }
-
- return 0;
-}
-
-#endif /* USE_SHARED_CCLASS_TABLE */
-
-
-#ifndef CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS
-static int
-clear_not_flag_cclass(CClassNode* cc, OnigEncoding enc)
-{
- BBuf *tbuf;
- int r;
-
- if (IS_NCCLASS_NOT(cc)) {
- bitset_invert(cc->bs);
-
- if (! ONIGENC_IS_SINGLEBYTE(enc)) {
- r = not_code_range_buf(enc, cc->mbuf, &tbuf);
- if (r != 0) return r;
-
- bbuf_free(cc->mbuf);
- cc->mbuf = tbuf;
- }
-
- NCCLASS_CLEAR_NOT(cc);
- }
-
- return 0;
-}
-#endif /* CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS */
-
-typedef struct {
- ScanEnv* env;
- CClassNode* cc;
- Node* alt_root;
- Node** ptail;
-} IApplyCaseFoldArg;
-
-static int
-i_apply_case_fold(OnigCodePoint from, OnigCodePoint to[],
- int to_len, void* arg)
-{
- IApplyCaseFoldArg* iarg;
- ScanEnv* env;
- CClassNode* cc;
- BitSetRef bs;
-
- iarg = (IApplyCaseFoldArg* )arg;
- env = iarg->env;
- cc = iarg->cc;
- bs = cc->bs;
-
- if (to_len == 1) {
- int is_in = onig_is_code_in_cc(env->enc, from, cc);
-#ifdef CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS
- if ((is_in != 0 && !IS_NCCLASS_NOT(cc)) ||
- (is_in == 0 && IS_NCCLASS_NOT(cc))) {
- if (ONIGENC_MBC_MINLEN(env->enc) > 1 || *to >= SINGLE_BYTE_SIZE) {
- add_code_range(&(cc->mbuf), env, *to, *to);
- }
- else {
- BITSET_SET_BIT(bs, *to);
- }
- }
-#else
- if (is_in != 0) {
- if (ONIGENC_MBC_MINLEN(env->enc) > 1 || *to >= SINGLE_BYTE_SIZE) {
- if (IS_NCCLASS_NOT(cc)) clear_not_flag_cclass(cc, env->enc);
- add_code_range(&(cc->mbuf), env, *to, *to);
- }
- else {
- if (IS_NCCLASS_NOT(cc)) {
- BITSET_CLEAR_BIT(bs, *to);
- }
- else
- BITSET_SET_BIT(bs, *to);
- }
- }
-#endif /* CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS */
- }
- else {
- int r, i, len;
- UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN];
- Node *snode = NULL_NODE;
-
- if (onig_is_code_in_cc(env->enc, from, cc)
-#ifdef CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS
- && !IS_NCCLASS_NOT(cc)
-#endif
- ) {
- for (i = 0; i < to_len; i++) {
- len = ONIGENC_CODE_TO_MBC(env->enc, to[i], buf);
- if (i == 0) {
- snode = onig_node_new_str(buf, buf + len);
- CHECK_NULL_RETURN_MEMERR(snode);
-
- /* char-class expanded multi-char only
- compare with string folded at match time. */
- NSTRING_SET_AMBIG(snode);
- }
- else {
- r = onig_node_str_cat(snode, buf, buf + len);
- if (r < 0) {
- onig_node_free(snode);
- return r;
- }
- }
- }
-
- *(iarg->ptail) = onig_node_new_alt(snode, NULL_NODE);
- CHECK_NULL_RETURN_MEMERR(*(iarg->ptail));
- iarg->ptail = &(NCDR((*(iarg->ptail))));
- }
- }
-
- return 0;
-}
-
-static int
-parse_exp(Node** np, OnigToken* tok, int term,
- UChar** src, UChar* end, ScanEnv* env)
-{
- int r, len, group = 0;
- Node* qn;
- Node** targetp;
-
- *np = NULL;
- if (tok->type == (enum TokenSyms )term)
- goto end_of_token;
-
- switch (tok->type) {
- case TK_ALT:
- case TK_EOT:
- end_of_token:
- *np = node_new_empty();
- return tok->type;
- break;
-
- case TK_SUBEXP_OPEN:
- r = parse_enclose(np, tok, TK_SUBEXP_CLOSE, src, end, env);
- if (r < 0) return r;
- if (r == 1) group = 1;
- else if (r == 2) { /* option only */
- Node* target;
- OnigOptionType prev = env->option;
-
- env->option = NENCLOSE(*np)->option;
- r = fetch_token(tok, src, end, env);
- if (r < 0) return r;
- r = parse_subexp(&target, tok, term, src, end, env);
- env->option = prev;
- if (r < 0) return r;
- NENCLOSE(*np)->target = target;
- return tok->type;
- }
- break;
-
- case TK_SUBEXP_CLOSE:
- if (! IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_UNMATCHED_CLOSE_SUBEXP))
- return ONIGERR_UNMATCHED_CLOSE_PARENTHESIS;
-
- if (tok->escaped) goto tk_raw_byte;
- else goto tk_byte;
- break;
-
- case TK_STRING:
- tk_byte:
- {
- *np = node_new_str(tok->backp, *src);
- CHECK_NULL_RETURN_MEMERR(*np);
-
- while (1) {
- r = fetch_token(tok, src, end, env);
- if (r < 0) return r;
- if (r != TK_STRING) break;
-
- r = onig_node_str_cat(*np, tok->backp, *src);
- if (r < 0) return r;
- }
-
- string_end:
- targetp = np;
- goto repeat;
- }
- break;
-
- case TK_RAW_BYTE:
- tk_raw_byte:
- {
- *np = node_new_str_raw_char((UChar )tok->u.c);
- CHECK_NULL_RETURN_MEMERR(*np);
- len = 1;
- while (1) {
- if (len >= ONIGENC_MBC_MINLEN(env->enc)) {
- if (len == enclen(env->enc, NSTR(*np)->s)) {
- r = fetch_token(tok, src, end, env);
- NSTRING_CLEAR_RAW(*np);
- goto string_end;
- }
- }
-
- r = fetch_token(tok, src, end, env);
- if (r < 0) return r;
- if (r != TK_RAW_BYTE) {
- /* Don't use this, it is wrong for little endian encodings. */
-#ifdef USE_PAD_TO_SHORT_BYTE_CHAR
- int rem;
- if (len < ONIGENC_MBC_MINLEN(env->enc)) {
- rem = ONIGENC_MBC_MINLEN(env->enc) - len;
- (void )node_str_head_pad(NSTR(*np), rem, (UChar )0);
- if (len + rem == enclen(env->enc, NSTR(*np)->s)) {
- NSTRING_CLEAR_RAW(*np);
- goto string_end;
- }
- }
-#endif
- return ONIGERR_TOO_SHORT_MULTI_BYTE_STRING;
- }
-
- r = node_str_cat_char(*np, (UChar )tok->u.c);
- if (r < 0) return r;
-
- len++;
- }
- }
- break;
-
- case TK_CODE_POINT:
- {
- UChar buf[ONIGENC_CODE_TO_MBC_MAXLEN];
- int num = ONIGENC_CODE_TO_MBC(env->enc, tok->u.code, buf);
- if (num < 0) return num;
-#ifdef NUMBERED_CHAR_IS_NOT_CASE_AMBIG
- *np = node_new_str_raw(buf, buf + num);
-#else
- *np = node_new_str(buf, buf + num);
-#endif
- CHECK_NULL_RETURN_MEMERR(*np);
- }
- break;
-
- case TK_QUOTE_OPEN:
- {
- OnigCodePoint end_op[2];
- UChar *qstart, *qend, *nextp;
-
- end_op[0] = (OnigCodePoint )MC_ESC(env->syntax);
- end_op[1] = (OnigCodePoint )'E';
- qstart = *src;
- qend = find_str_position(end_op, 2, qstart, end, &nextp, env->enc);
- if (IS_NULL(qend)) {
- nextp = qend = end;
- }
- *np = node_new_str(qstart, qend);
- CHECK_NULL_RETURN_MEMERR(*np);
- *src = nextp;
- }
- break;
-
- case TK_CHAR_TYPE:
- {
- switch (tok->u.prop.ctype) {
- case ONIGENC_CTYPE_WORD:
- *np = node_new_ctype(tok->u.prop.ctype, tok->u.prop.not);
- CHECK_NULL_RETURN_MEMERR(*np);
- break;
-
- case ONIGENC_CTYPE_SPACE:
- case ONIGENC_CTYPE_DIGIT:
- case ONIGENC_CTYPE_XDIGIT:
- {
- CClassNode* cc;
-
-#ifdef USE_SHARED_CCLASS_TABLE
- const OnigCodePoint *mbr;
- OnigCodePoint sb_out;
-
- r = ONIGENC_GET_CTYPE_CODE_RANGE(env->enc, tok->u.prop.ctype,
- &sb_out, &mbr);
- if (r == 0 &&
- ONIGENC_CODE_RANGE_NUM(mbr)
- >= THRESHOLD_RANGE_NUM_FOR_SHARE_CCLASS) {
- type_cclass_key key;
- type_cclass_key* new_key;
-
- key.enc = env->enc;
- key.not = tok->u.prop.not;
- key.type = tok->u.prop.ctype;
-
- THREAD_ATOMIC_START;
-
- if (IS_NULL(OnigTypeCClassTable)) {
- OnigTypeCClassTable
- = onig_st_init_table_with_size(&type_type_cclass_hash, 10);
- if (IS_NULL(OnigTypeCClassTable)) {
- THREAD_ATOMIC_END;
- return ONIGERR_MEMORY;
- }
- }
- else {
- if (onig_st_lookup(OnigTypeCClassTable, (st_data_t )&key,
- (st_data_t* )np)) {
- THREAD_ATOMIC_END;
- break;
- }
- }
-
- *np = node_new_cclass_by_codepoint_range(tok->u.prop.not,
- sb_out, mbr);
- if (IS_NULL(*np)) {
- THREAD_ATOMIC_END;
- return ONIGERR_MEMORY;
- }
-
- cc = NCCLASS(*np);
- NCCLASS_SET_SHARE(cc);
- new_key = (type_cclass_key* )xmalloc(sizeof(type_cclass_key));
- xmemcpy(new_key, &key, sizeof(type_cclass_key));
- onig_st_add_direct(OnigTypeCClassTable, (st_data_t )new_key,
- (st_data_t )*np);
-
- THREAD_ATOMIC_END;
- }
- else {
-#endif
- *np = node_new_cclass();
- CHECK_NULL_RETURN_MEMERR(*np);
- cc = NCCLASS(*np);
- add_ctype_to_cc(cc, tok->u.prop.ctype, 0, env);
- if (tok->u.prop.not != 0) NCCLASS_SET_NOT(cc);
-#ifdef USE_SHARED_CCLASS_TABLE
- }
-#endif
- }
- break;
-
- default:
- return ONIGERR_PARSER_BUG;
- break;
- }
- }
- break;
-
- case TK_CHAR_PROPERTY:
- r = parse_char_property(np, tok, src, end, env);
- if (r != 0) return r;
- break;
-
- case TK_CC_OPEN:
- {
- CClassNode* cc;
-
- r = parse_char_class(np, tok, src, end, env);
- if (r != 0) return r;
-
- cc = NCCLASS(*np);
- if (IS_IGNORECASE(env->option)) {
- IApplyCaseFoldArg iarg;
-
- iarg.env = env;
- iarg.cc = cc;
- iarg.alt_root = NULL_NODE;
- iarg.ptail = &(iarg.alt_root);
-
- r = ONIGENC_APPLY_ALL_CASE_FOLD(env->enc, env->case_fold_flag,
- i_apply_case_fold, &iarg);
- if (r != 0) {
- onig_node_free(iarg.alt_root);
- return r;
- }
- if (IS_NOT_NULL(iarg.alt_root)) {
- Node* work = onig_node_new_alt(*np, iarg.alt_root);
- if (IS_NULL(work)) {
- onig_node_free(iarg.alt_root);
- return ONIGERR_MEMORY;
- }
- *np = work;
- }
- }
- }
- break;
-
- case TK_ANYCHAR:
- *np = node_new_anychar();
- CHECK_NULL_RETURN_MEMERR(*np);
- break;
-
- case TK_ANYCHAR_ANYTIME:
- *np = node_new_anychar();
- CHECK_NULL_RETURN_MEMERR(*np);
- qn = node_new_quantifier(0, REPEAT_INFINITE, 0);
- CHECK_NULL_RETURN_MEMERR(qn);
- NQTFR(qn)->target = *np;
- *np = qn;
- break;
-
- case TK_BACKREF:
- len = tok->u.backref.num;
- *np = node_new_backref(len,
- (len > 1 ? tok->u.backref.refs : &(tok->u.backref.ref1)),
- tok->u.backref.by_name,
-#ifdef USE_BACKREF_WITH_LEVEL
- tok->u.backref.exist_level,
- tok->u.backref.level,
-#endif
- env);
- CHECK_NULL_RETURN_MEMERR(*np);
- break;
-
-#ifdef USE_SUBEXP_CALL
- case TK_CALL:
- {
- int gnum = tok->u.call.gnum;
-
- if (gnum < 0) {
- gnum = BACKREF_REL_TO_ABS(gnum, env);
- if (gnum <= 0)
- return ONIGERR_INVALID_BACKREF;
- }
- *np = node_new_call(tok->u.call.name, tok->u.call.name_end, gnum);
- CHECK_NULL_RETURN_MEMERR(*np);
- env->num_call++;
- }
- break;
-#endif
-
- case TK_ANCHOR:
- *np = onig_node_new_anchor(tok->u.anchor);
- break;
-
- case TK_OP_REPEAT:
- case TK_INTERVAL:
- if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_CONTEXT_INDEP_REPEAT_OPS)) {
- if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_CONTEXT_INVALID_REPEAT_OPS))
- return ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED;
- else
- *np = node_new_empty();
- }
- else {
- goto tk_byte;
- }
- break;
-
- default:
- return ONIGERR_PARSER_BUG;
- break;
- }
-
- {
- targetp = np;
-
- re_entry:
- r = fetch_token(tok, src, end, env);
- if (r < 0) return r;
-
- repeat:
- if (r == TK_OP_REPEAT || r == TK_INTERVAL) {
- if (is_invalid_quantifier_target(*targetp))
- return ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID;
-
- qn = node_new_quantifier(tok->u.repeat.lower, tok->u.repeat.upper,
- (r == TK_INTERVAL ? 1 : 0));
- CHECK_NULL_RETURN_MEMERR(qn);
- NQTFR(qn)->greedy = tok->u.repeat.greedy;
- r = set_quantifier(qn, *targetp, group, env);
- if (r < 0) {
- onig_node_free(qn);
- return r;
- }
-
- if (tok->u.repeat.possessive != 0) {
- Node* en;
- en = node_new_enclose(ENCLOSE_STOP_BACKTRACK);
- if (IS_NULL(en)) {
- onig_node_free(qn);
- return ONIGERR_MEMORY;
- }
- NENCLOSE(en)->target = qn;
- qn = en;
- }
-
- if (r == 0) {
- *targetp = qn;
- }
- else if (r == 1) {
- onig_node_free(qn);
- }
- else if (r == 2) { /* split case: /abc+/ */
- Node *tmp;
-
- *targetp = node_new_list(*targetp, NULL);
- if (IS_NULL(*targetp)) {
- onig_node_free(qn);
- return ONIGERR_MEMORY;
- }
- tmp = NCDR(*targetp) = node_new_list(qn, NULL);
- if (IS_NULL(tmp)) {
- onig_node_free(qn);
- return ONIGERR_MEMORY;
- }
- targetp = &(NCAR(tmp));
- }
- goto re_entry;
- }
- }
-
- return r;
-}
-
-static int
-parse_branch(Node** top, OnigToken* tok, int term,
- UChar** src, UChar* end, ScanEnv* env)
-{
- int r;
- Node *node, **headp;
-
- *top = NULL;
- r = parse_exp(&node, tok, term, src, end, env);
- if (r < 0) return r;
-
- if (r == TK_EOT || r == term || r == TK_ALT) {
- *top = node;
- }
- else {
- *top = node_new_list(node, NULL);
- headp = &(NCDR(*top));
- while (r != TK_EOT && r != term && r != TK_ALT) {
- r = parse_exp(&node, tok, term, src, end, env);
- if (r < 0) return r;
-
- if (NTYPE(node) == NT_LIST) {
- *headp = node;
- while (IS_NOT_NULL(NCDR(node))) node = NCDR(node);
- headp = &(NCDR(node));
- }
- else {
- *headp = node_new_list(node, NULL);
- headp = &(NCDR(*headp));
- }
- }
- }
-
- return r;
-}
-
-/* term_tok: TK_EOT or TK_SUBEXP_CLOSE */
-static int
-parse_subexp(Node** top, OnigToken* tok, int term,
- UChar** src, UChar* end, ScanEnv* env)
-{
- int r;
- Node *node, **headp;
-
- *top = NULL;
- r = parse_branch(&node, tok, term, src, end, env);
- if (r < 0) {
- onig_node_free(node);
- return r;
- }
-
- if (r == term) {
- *top = node;
- }
- else if (r == TK_ALT) {
- *top = onig_node_new_alt(node, NULL);
- headp = &(NCDR(*top));
- while (r == TK_ALT) {
- r = fetch_token(tok, src, end, env);
- if (r < 0) return r;
- r = parse_branch(&node, tok, term, src, end, env);
- if (r < 0) return r;
-
- *headp = onig_node_new_alt(node, NULL);
- headp = &(NCDR(*headp));
- }
-
- if (tok->type != (enum TokenSyms )term)
- goto err;
- }
- else {
- err:
- if (term == TK_SUBEXP_CLOSE)
- return ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS;
- else
- return ONIGERR_PARSER_BUG;
- }
-
- return r;
-}
-
-static int
-parse_regexp(Node** top, UChar** src, UChar* end, ScanEnv* env)
-{
- int r;
- OnigToken tok;
-
- r = fetch_token(&tok, src, end, env);
- if (r < 0) return r;
- r = parse_subexp(top, &tok, TK_EOT, src, end, env);
- if (r < 0) return r;
- return 0;
-}
-
-extern int
-onig_parse_make_tree(Node** root, const UChar* pattern, const UChar* end,
- regex_t* reg, ScanEnv* env)
-{
- int r;
- UChar* p;
-
-#ifdef USE_NAMED_GROUP
- names_clear(reg);
-#endif
-
- scan_env_clear(env);
- env->option = reg->options;
- env->case_fold_flag = reg->case_fold_flag;
- env->enc = reg->enc;
- env->syntax = reg->syntax;
- env->pattern = (UChar* )pattern;
- env->pattern_end = (UChar* )end;
- env->reg = reg;
-
- *root = NULL;
- p = (UChar* )pattern;
- r = parse_regexp(root, &p, (UChar* )end, env);
- reg->num_mem = env->num_mem;
- return r;
-}
-
-extern void
-onig_scan_env_set_error_string(ScanEnv* env, int ecode ARG_UNUSED,
- UChar* arg, UChar* arg_end)
-{
- env->error = arg;
- env->error_end = arg_end;
-}