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regparse.c
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/**********************************************************************
regparse.c - Onigmo (Oniguruma-mod) (regular expression library)
**********************************************************************/
/*-
* Copyright (c) 2002-2008 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
* Copyright (c) 2011-2016 K.Takata <kentkt AT csc 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.
*/
// Suppress some false-positive compiler warnings
#if defined(__GNUC__) && __GNUC__ >= 12
#pragma GCC diagnostic ignored "-Warray-bounds"
#pragma GCC diagnostic ignored "-Wstringop-overflow"
#pragma GCC diagnostic ignored "-Wrestrict"
#endif
#include "regparse.h"
#include <stdarg.h>
#include "internal/sanitizers.h"
#define WARN_BUFSIZE 256
#define CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS
const 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 |
#ifndef RUBY
ONIG_SYN_OP2_ESC_U_HEX4 |
#endif
ONIG_SYN_OP2_ESC_CAPITAL_X_EXTENDED_GRAPHEME_CLUSTER |
ONIG_SYN_OP2_QMARK_LPAREN_CONDITION |
ONIG_SYN_OP2_ESC_CAPITAL_R_LINEBREAK |
ONIG_SYN_OP2_ESC_CAPITAL_K_KEEP |
ONIG_SYN_OP2_QMARK_TILDE_ABSENT )
, ( 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_CC_DUP |
ONIG_SYN_WARN_REDUNDANT_NESTED_REPEAT )
, ( ONIG_OPTION_ASCII_RANGE | ONIG_OPTION_POSIX_BRACKET_ALL_RANGE |
ONIG_OPTION_WORD_BOUND_ALL_RANGE )
,
{
(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 */
}
};
const 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 CC_DUP_WARN(ScanEnv *env, OnigCodePoint from, OnigCodePoint to);
static unsigned int ParseDepthLimit = DEFAULT_PARSE_DEPTH_LIMIT;
extern unsigned int
onig_get_parse_depth_limit(void)
{
return ParseDepthLimit;
}
extern int
onig_set_parse_depth_limit(unsigned int depth)
{
if (depth == 0)
ParseDepthLimit = DEFAULT_PARSE_DEPTH_LIMIT;
else
ParseDepthLimit = depth;
return 0;
}
static void
bbuf_free(BBuf* bbuf)
{
if (IS_NOT_NULL(bbuf)) {
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, env, MBCODE_START_POS(enc), ONIG_LAST_CODE_POINT)
#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_SET_BIT_CHKDUP(bs, pos) do { \
if (BITSET_AT(bs, pos)) CC_DUP_WARN(env, pos, pos); \
BS_ROOM(bs, pos) |= BS_BIT(pos); \
} while (0)
#define BITSET_IS_EMPTY(bs,empty) do {\
int i;\
empty = 1;\
for (i = 0; i < BITSET_SIZE; i++) {\
if ((bs)[i] != 0) {\
empty = 0; break;\
}\
}\
} while (0)
static void
bitset_set_range(ScanEnv *env, BitSetRef bs, int from, int to)
{
int i;
for (i = from; i <= to && i < SINGLE_BYTE_SIZE; i++) {
BITSET_SET_BIT_CHKDUP(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 < BITSET_SIZE; i++) { bs[i] = ~(bs[i]); }
}
static void
bitset_invert_to(BitSetRef from, BitSetRef to)
{
int i;
for (i = 0; i < BITSET_SIZE; i++) { to[i] = ~(from[i]); }
}
static void
bitset_and(BitSetRef dest, BitSetRef bs)
{
int i;
for (i = 0; i < BITSET_SIZE; i++) { dest[i] &= bs[i]; }
}
static void
bitset_or(BitSetRef dest, BitSetRef bs)
{
int i;
for (i = 0; i < BITSET_SIZE; i++) { dest[i] |= bs[i]; }
}
static void
bitset_copy(BitSetRef dest, BitSetRef bs)
{
int i;
for (i = 0; i < BITSET_SIZE; i++) { dest[i] = bs[i]; }
}
#if defined(USE_NAMED_GROUP) && !defined(USE_ST_LIBRARY)
extern int
onig_strncmp(const UChar* s1, const UChar* s2, size_t n)
{
int x;
while (n-- > 0) {
x = *s2++ - *s1++;
if (x) return x;
}
return 0;
}
#endif
extern void
onig_strcpy(UChar* dest, const UChar* src, const UChar* end)
{
ptrdiff_t 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, const UChar* s, const UChar* end)
{
ptrdiff_t slen;
int 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
#ifdef __GNUC__
/* get rid of Wunused-but-set-variable and Wuninitialized */
# define PFETCH_READY UChar* pfetch_prev = NULL; (void)pfetch_prev
#else
# define PFETCH_READY UChar* pfetch_prev
#endif
#define PEND (p < end ? 0 : 1)
#define PUNFETCH p = pfetch_prev
#define PINC do { \
pfetch_prev = p; \
p += enclen(enc, p, end); \
} while (0)
#define PFETCH(c) do { \
c = ((enc->max_enc_len == 1) ? *p : ONIGENC_MBC_TO_CODE(enc, p, end)); \
pfetch_prev = p; \
p += enclen(enc, p, end); \
} while (0)
#define PINC_S do { \
p += enclen(enc, p, end); \
} while (0)
#define PFETCH_S(c) do { \
c = ((enc->max_enc_len == 1) ? *p : ONIGENC_MBC_TO_CODE(enc, p, end)); \
p += enclen(enc, p, end); \
} 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,
size_t 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, size_t 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
# ifdef RUBY
# include "ruby/st.h"
# else
# include "st.h"
# endif
typedef struct {
const UChar* s;
const UChar* end;
} st_str_end_key;
static int
str_end_cmp(st_data_t xp, st_data_t yp)
{
const st_str_end_key *x, *y;
const UChar *p, *q;
int c;
x = (const st_str_end_key *)xp;
y = (const st_str_end_key *)yp;
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;
}
NO_SANITIZE("unsigned-integer-overflow", static st_index_t str_end_hash(st_data_t xp));
static st_index_t
str_end_hash(st_data_t xp)
{
const st_str_end_key *x = (const st_str_end_key *)xp;
const UChar *p;
st_index_t 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(st_index_t size)
{
static const 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;
size_t 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 */
# ifdef ONIG_DEBUG
static int
i_print_name_entry(HashDataType key_, HashDataType e_, HashDataType arg_)
{
NameEntry* e = (NameEntry *)e_;
void* arg = (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(HashDataType key_, HashDataType e_, HashDataType arg_ ARG_UNUSED)
{
UChar* key = (UChar *)key_;
NameEntry* e = (NameEntry *)e_;
xfree(e->name);
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 int
copy_named_captures_iter(const OnigUChar *name, const OnigUChar *name_end,
int back_num, int *back_refs, OnigRegex regex, void *arg)
{
NameTable *copy_table = (NameTable *)arg;
NameEntry *entry_copy = (NameEntry* )xmalloc(sizeof(NameEntry));
if (IS_NULL(entry_copy)) return -1;
entry_copy->name_len = name_end - name;
entry_copy->back_num = back_num;
entry_copy->back_alloc = back_num;
entry_copy->back_ref1 = back_refs[0];
entry_copy->back_refs = xmalloc(back_num * (sizeof(int*)));
if (IS_NULL(entry_copy->back_refs)) {
xfree(entry_copy);
return -1;
}
memcpy(entry_copy->back_refs, back_refs, back_num * sizeof(back_refs[0]));
UChar *new_name = strdup_with_null(regex->enc, name, name_end);
if (IS_NULL(new_name)) {
xfree(entry_copy->back_refs);
xfree(entry_copy);
return -1;
}
entry_copy->name = new_name;
if (onig_st_insert_strend(copy_table, new_name, (new_name + entry_copy->name_len), (hash_data_type)entry_copy)) {
xfree(entry_copy->name);
xfree(entry_copy->back_refs);
xfree(entry_copy);
return -1;
}
return 0;
}
extern int
onig_names_copy(regex_t* reg, regex_t* oreg)
{
NameTable* table = oreg->name_table;
if (table) {
NameTable * t = onig_st_init_strend_table_with_size(onig_number_of_names(oreg));
CHECK_NULL_RETURN_MEMERR(t);
if (onig_foreach_name(oreg, copy_named_captures_iter, (void*)t)) {
onig_st_free_table(t);
return ONIGERR_MEMORY;
}
reg->name_table = t;
}
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(HashDataType key_ ARG_UNUSED, HashDataType e_, HashDataType arg_)
{
NameEntry* e = (NameEntry *)e_;
INamesArg* arg = (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(HashDataType key_ ARG_UNUSED, HashDataType e_, HashDataType map_)
{
NameEntry* e = (NameEntry *)e_;
GroupNumRemap* map = (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(const regex_t* reg)
{
NameTable* t = (NameTable* )reg->name_table;
if (IS_NOT_NULL(t))
return (int )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;
xfree(e->back_refs);
e->back_refs = (int* )NULL;
}
}
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;
xfree(t);
reg->name_table = NULL;
return 0;
}
extern int
onig_names_copy(regex_t* reg, regex_t* oreg)
{
NameTable* ot = oreg->name_table;
if (ot) {
OnigEncoding enc = oreg->enc;
int i, num = ot->num;
NameTable* t = xmalloc(sizeof(*t));
CHECK_NULL_RETURN_MEMERR(t);
*t = *ot;
t->e = xmalloc(t->alloc * sizeof(t->e[0]));
if (IS_NULL(t->e)) {
xfree(t);
return ONIGERR_MEMORY;
}
t->num = 0;
reg->name_table = t;
for (i = 0; i < num; t->num = ++i) {
NameEntry* oe = &(ot->e[i]);
NameEntry* e = &(t->e[i]);
*e = *oe;
e->name = NULL;
e->back_refs = NULL;
e->name = strdup_with_null(enc, oe->name, oe->name + e->name_len);
if (IS_NULL(e->name)) {
onig_names_free(reg);
return ONIGERR_MEMORY;
}
e->back_refs = xmalloc(e->back_alloc * sizeof(e->back_refs[0]));
if (IS_NULL(e->back_refs)) {
xfree(e->name);
onig_names_free(reg);
return ONIGERR_MEMORY;
}
memcpy(e->back_refs, oe->back_refs, e->back_num * sizeof(e->back_refs[0]));
e->back_ref1 = e->back_refs[0];
}
}
return 0;
}
static NameEntry*
name_find(regex_t* reg, const UChar* name, const UChar* name_end)
{
int i;
size_t 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_renumber_name_table(regex_t* reg, GroupNumRemap* map)
{
int i, j;
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 (e->back_num > 1) {
for (j = 0; j < e->back_num; j++) {
e->back_refs[j] = map[e->back_refs[j]].new_val;
}
}
else if (e->back_num == 1) {
e->back_ref1 = map[e->back_ref1].new_val;
}
}
}
return 0;
}
extern int
onig_number_of_names(const 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;
NameEntry* p;
alloc = t->alloc * 2;
p = (NameEntry* )xrealloc(t->e, sizeof(NameEntry) * alloc);
CHECK_NULL_RETURN_MEMERR(p);
t->e = p;
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);