diff options
Diffstat (limited to 'regparse.c')
| -rw-r--r-- | regparse.c | 5554 |
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; -} |