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authorUlrich Drepper <drepper@redhat.com>2002-11-06 19:57:50 +0000
committerUlrich Drepper <drepper@redhat.com>2002-11-06 19:57:50 +0000
commit1b2c2628354003bd97af125a164e830c9d295e3a (patch)
tree32abaefed6d40cf6c559bcd6e0b47016419e7dc3 /posix
parentb14993a2356cd7b8c3f74ca2b8e743c056f9401d (diff)
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Update.
2002-11-06 Jakub Jelinek <jakub@redhat.com> * posix/regcomp.c (re_compile_pattern): Don't set regs_allocated here. (regcomp): Don't set can_be_null here. (re_comp): Clear whole re_comp_buf with the exception of fastmap. (re_compile_internal): Clear can_be_null, set regs_allocated. * posix/regcomp.c (re_set_fastmap): New function. (re_compile_fastmap_iter): Use it. Remove redundant type == COMPLEX_BRACKET check. * posix/regexec.c (re_search_internal): Optimize searching with fastmap. Call re_string_reconstruct even if match_first is smaller than raw_mbs_idx. 2002-11-06 Isamu Hasegawa <isamu@yamato.ibm.com> * posix/regcomp (free_dfa_content): Use free_state. * posix/regex_internal.c (re_string_realloc_buffers): Don't edit pointers in case that realloc failed. (re_node_set_merge): Likewise. (register_state): Likewise. (create_newstate_common): Invoke memory release functions in case of error conditions. (create_ci_newstate): Likewise. (create_cd_newstate): Likewise. (free_state): New function. * posix/regexec.c (re_search_internal): Invoke memory release functions in case of error conditions. (sift_states_backward): Likewise. (merge_state_array): Likewise. (add_epsilon_src_nodes): Likewise. (sub_epsilon_src_nodes): Likewise. (search_subexp): Likewise. (sift_states_bkref): Likewise. (transit_state_sb): Likewise. (transit_state_mb): Likewise. (transit_state_bkref_loop): Likewise. (group_nodes_into_DFAstates): Likewise. (push_fail_stack): Don't edit pointers in case that realloc failed. (extend_buffers): Likewise. (match_ctx_add_entry): Likewise.
Diffstat (limited to 'posix')
-rw-r--r--posix/regcomp.c35
-rw-r--r--posix/regex_internal.c607
-rw-r--r--posix/regexec.c362
3 files changed, 581 insertions, 423 deletions
diff --git a/posix/regcomp.c b/posix/regcomp.c
index 3cf07b17d4..03d5cfce14 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -267,10 +267,6 @@ re_compile_pattern (pattern, length, bufp)
{
reg_errcode_t ret;
- /* GNU code is written to assume at least RE_NREGS registers will be set
- (and at least one extra will be -1). */
- bufp->regs_allocated = REGS_UNALLOCATED;
-
/* And GNU code determines whether or not to get register information
by passing null for the REGS argument to re_match, etc., not by
setting no_sub. */
@@ -339,6 +335,14 @@ re_compile_fastmap (bufp)
weak_alias (__re_compile_fastmap, re_compile_fastmap)
#endif
+static inline void
+re_set_fastmap (char *fastmap, int icase, int ch)
+{
+ fastmap[ch] = 1;
+ if (icase)
+ fastmap[tolower (ch)] = 1;
+}
+
/* Helper function for re_compile_fastmap.
Compile fastmap for the initial_state INIT_STATE. */
@@ -350,20 +354,21 @@ re_compile_fastmap_iter (bufp, init_state, fastmap)
{
re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
int node_cnt;
+ int icase = (MB_CUR_MAX == 1 && (bufp->syntax & RE_ICASE));
for (node_cnt = 0; node_cnt < init_state->nodes.nelem; ++node_cnt)
{
int node = init_state->nodes.elems[node_cnt];
re_token_type_t type = dfa->nodes[node].type;
if (type == CHARACTER)
- fastmap[dfa->nodes[node].opr.c] = 1;
+ re_set_fastmap (fastmap, icase, dfa->nodes[node].opr.c);
else if (type == SIMPLE_BRACKET)
{
int i, j, ch;
for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
for (j = 0; j < UINT_BITS; ++j, ++ch)
if (dfa->nodes[node].opr.sbcset[i] & (1 << j))
- fastmap[ch] = 1;
+ re_set_fastmap (fastmap, icase, ch);
}
#ifdef RE_ENABLE_I18N
else if (type == COMPLEX_BRACKET)
@@ -388,28 +393,24 @@ re_compile_fastmap_iter (bufp, init_state, fastmap)
for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
for (j = 0; j < UINT_BITS; ++j, ++ch)
if (table[ch] < 0)
- fastmap[ch] = 1;
+ re_set_fastmap (fastmap, icase, ch);
}
# else
if (MB_CUR_MAX > 1)
for (i = 0; i < SBC_MAX; ++i)
if (__btowc (i) == WEOF)
- fastmap[i] = 1;
+ re_set_fastmap (fastmap, icase, i);
# endif /* not _LIBC */
}
for (i = 0; i < cset->nmbchars; ++i)
{
char buf[256];
wctomb (buf, cset->mbchars[i]);
- fastmap[*(unsigned char *) buf] = 1;
+ re_set_fastmap (fastmap, icase, *(unsigned char *) buf);
}
}
#endif /* RE_ENABLE_I18N */
- else if (type == END_OF_RE || type == OP_PERIOD
-#ifdef RE_ENABLE_I18N
- || type == COMPLEX_BRACKET
-#endif /* RE_ENABLE_I18N */
- )
+ else if (type == END_OF_RE || type == OP_PERIOD)
{
memset (fastmap, '\1', sizeof (char) * SBC_MAX);
if (type == END_OF_RE)
@@ -468,7 +469,6 @@ regcomp (preg, pattern, cflags)
preg->buffer = NULL;
preg->allocated = 0;
preg->used = 0;
- preg->can_be_null = 0;
/* Try to allocate space for the fastmap. */
preg->fastmap = re_malloc (char, SBC_MAX);
@@ -667,8 +667,7 @@ re_comp (s)
fastmap = re_comp_buf.fastmap;
re_comp_buf.fastmap = NULL;
__regfree (&re_comp_buf);
- re_comp_buf.buffer = NULL;
- re_comp_buf.allocated = 0;
+ memset (&re_comp_buf, '\0', sizeof (re_comp_buf));
re_comp_buf.fastmap = fastmap;
}
@@ -725,6 +724,8 @@ re_compile_internal (preg, pattern, length, syntax)
preg->not_bol = preg->not_eol = 0;
preg->used = 0;
preg->re_nsub = 0;
+ preg->can_be_null = 0;
+ preg->regs_allocated = REGS_UNALLOCATED;
/* Initialize the dfa. */
dfa = (re_dfa_t *) preg->buffer;
diff --git a/posix/regex_internal.c b/posix/regex_internal.c
index 69fb9a65f5..74c8e8b7f6 100644
--- a/posix/regex_internal.c
+++ b/posix/regex_internal.c
@@ -63,25 +63,25 @@
#include "regex_internal.h"
static void re_string_construct_common (const char *str, int len,
- re_string_t *pstr,
- RE_TRANSLATE_TYPE trans, int icase);
+ re_string_t *pstr,
+ RE_TRANSLATE_TYPE trans, int icase);
#ifdef RE_ENABLE_I18N
static int re_string_skip_chars (re_string_t *pstr, int new_raw_idx);
#endif /* RE_ENABLE_I18N */
static re_dfastate_t *create_newstate_common (re_dfa_t *dfa,
- const re_node_set *nodes,
- unsigned int hash);
+ const re_node_set *nodes,
+ unsigned int hash);
static reg_errcode_t register_state (re_dfa_t *dfa, re_dfastate_t *newstate,
- unsigned int hash);
+ unsigned int hash);
static re_dfastate_t *create_ci_newstate (re_dfa_t *dfa,
- const re_node_set *nodes,
- unsigned int hash);
+ const re_node_set *nodes,
+ unsigned int hash);
static re_dfastate_t *create_cd_newstate (re_dfa_t *dfa,
- const re_node_set *nodes,
- unsigned int context,
- unsigned int hash);
+ const re_node_set *nodes,
+ unsigned int context,
+ unsigned int hash);
static unsigned int inline calc_state_hash (const re_node_set *nodes,
- unsigned int context);
+ unsigned int context);
/* Functions for string operation. */
@@ -105,10 +105,10 @@ re_string_allocate (pstr, str, len, init_len, trans, icase)
return ret;
pstr->mbs_case = (MBS_CASE_ALLOCATED (pstr) ? pstr->mbs_case
- : (unsigned char *) str);
+ : (unsigned char *) str);
pstr->mbs = MBS_ALLOCATED (pstr) ? pstr->mbs : pstr->mbs_case;
pstr->valid_len = (MBS_CASE_ALLOCATED (pstr) || MBS_ALLOCATED (pstr)
- || MB_CUR_MAX > 1) ? pstr->valid_len : len;
+ || MB_CUR_MAX > 1) ? pstr->valid_len : len;
return REG_NOERROR;
}
@@ -131,34 +131,34 @@ re_string_construct (pstr, str, len, trans, icase)
{
ret = re_string_realloc_buffers (pstr, len + 1);
if (BE (ret != REG_NOERROR, 0))
- return ret;
+ return ret;
}
pstr->mbs_case = (MBS_CASE_ALLOCATED (pstr) ? pstr->mbs_case
- : (unsigned char *) str);
+ : (unsigned char *) str);
pstr->mbs = MBS_ALLOCATED (pstr) ? pstr->mbs : pstr->mbs_case;
if (icase)
{
#ifdef RE_ENABLE_I18N
if (MB_CUR_MAX > 1)
- build_wcs_upper_buffer (pstr);
+ build_wcs_upper_buffer (pstr);
else
#endif /* RE_ENABLE_I18N */
- build_upper_buffer (pstr);
+ build_upper_buffer (pstr);
}
else
{
#ifdef RE_ENABLE_I18N
if (MB_CUR_MAX > 1)
- build_wcs_buffer (pstr);
+ build_wcs_buffer (pstr);
else
#endif /* RE_ENABLE_I18N */
- {
- if (trans != NULL)
- re_string_translate_buffer (pstr);
- else
- pstr->valid_len = len;
- }
+ {
+ if (trans != NULL)
+ re_string_translate_buffer (pstr);
+ else
+ pstr->valid_len = len;
+ }
}
/* Initialized whole buffers, then valid_len == bufs_len. */
@@ -176,24 +176,29 @@ re_string_realloc_buffers (pstr, new_buf_len)
#ifdef RE_ENABLE_I18N
if (MB_CUR_MAX > 1)
{
- pstr->wcs = re_realloc (pstr->wcs, wint_t, new_buf_len);
- if (BE (pstr->wcs == NULL, 0))
- return REG_ESPACE;
+ wint_t *new_array = re_realloc (pstr->wcs, wint_t, new_buf_len);
+ if (BE (new_array == NULL, 0))
+ return REG_ESPACE;
+ pstr->wcs = new_array;
}
#endif /* RE_ENABLE_I18N */
if (MBS_ALLOCATED (pstr))
{
- pstr->mbs = re_realloc (pstr->mbs, unsigned char, new_buf_len);
- if (BE (pstr->mbs == NULL, 0))
- return REG_ESPACE;
+ unsigned char *new_array = re_realloc (pstr->mbs, unsigned char,
+ new_buf_len);
+ if (BE (new_array == NULL, 0))
+ return REG_ESPACE;
+ pstr->mbs = new_array;
}
if (MBS_CASE_ALLOCATED (pstr))
{
- pstr->mbs_case = re_realloc (pstr->mbs_case, unsigned char, new_buf_len);
- if (BE (pstr->mbs_case == NULL, 0))
- return REG_ESPACE;
+ unsigned char *new_array = re_realloc (pstr->mbs_case, unsigned char,
+ new_buf_len);
+ if (BE (new_array == NULL, 0))
+ return REG_ESPACE;
+ pstr->mbs_case = new_array;
if (!MBS_ALLOCATED (pstr))
- pstr->mbs = pstr->mbs_case;
+ pstr->mbs = pstr->mbs_case;
}
pstr->bufs_len = new_buf_len;
return REG_NOERROR;
@@ -243,32 +248,32 @@ build_wcs_buffer (pstr)
remain_len = end_idx - byte_idx;
prev_st = pstr->cur_state;
mbclen = mbrtowc (&wc, ((const char *) pstr->raw_mbs + pstr->raw_mbs_idx
- + byte_idx), remain_len, &pstr->cur_state);
+ + byte_idx), remain_len, &pstr->cur_state);
if (BE (mbclen == (size_t) -2, 0))
- {
- /* The buffer doesn't have enough space, finish to build. */
- pstr->cur_state = prev_st;
- break;
- }
+ {
+ /* The buffer doesn't have enough space, finish to build. */
+ pstr->cur_state = prev_st;
+ break;
+ }
else if (BE (mbclen == (size_t) -1 || mbclen == 0, 0))
- {
- /* We treat these cases as a singlebyte character. */
- mbclen = 1;
- wc = (wchar_t) pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx];
- pstr->cur_state = prev_st;
- }
+ {
+ /* We treat these cases as a singlebyte character. */
+ mbclen = 1;
+ wc = (wchar_t) pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx];
+ pstr->cur_state = prev_st;
+ }
/* Apply the translateion if we need. */
if (pstr->trans != NULL && mbclen == 1)
- {
- int ch = pstr->trans[pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx]];
- pstr->mbs_case[byte_idx] = ch;
- }
+ {
+ int ch = pstr->trans[pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx]];
+ pstr->mbs_case[byte_idx] = ch;
+ }
/* Write wide character and padding. */
pstr->wcs[byte_idx++] = wc;
/* Write paddings. */
for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
- pstr->wcs[byte_idx++] = WEOF;
+ pstr->wcs[byte_idx++] = WEOF;
}
pstr->valid_len = byte_idx;
}
@@ -291,40 +296,40 @@ build_wcs_upper_buffer (pstr)
remain_len = end_idx - byte_idx;
prev_st = pstr->cur_state;
mbclen = mbrtowc (&wc, ((const char *) pstr->raw_mbs + pstr->raw_mbs_idx
- + byte_idx), remain_len, &pstr->cur_state);
+ + byte_idx), remain_len, &pstr->cur_state);
if (BE (mbclen == (size_t) -2, 0))
- {
- /* The buffer doesn't have enough space, finish to build. */
- pstr->cur_state = prev_st;
- break;
- }
+ {
+ /* The buffer doesn't have enough space, finish to build. */
+ pstr->cur_state = prev_st;
+ break;
+ }
else if (mbclen == 1 || mbclen == (size_t) -1 || mbclen == 0)
- {
- /* In case of a singlebyte character. */
- int ch = pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx];
- /* Apply the translateion if we need. */
- if (pstr->trans != NULL && mbclen == 1)
- {
- ch = pstr->trans[ch];
- pstr->mbs_case[byte_idx] = ch;
- }
- pstr->wcs[byte_idx] = iswlower (wc) ? toupper (wc) : wc;
- pstr->mbs[byte_idx++] = islower (ch) ? toupper (ch) : ch;
- if (BE (mbclen == (size_t) -1, 0))
- pstr->cur_state = prev_st;
- }
+ {
+ /* In case of a singlebyte character. */
+ int ch = pstr->raw_mbs[pstr->raw_mbs_idx + byte_idx];
+ /* Apply the translateion if we need. */
+ if (pstr->trans != NULL && mbclen == 1)
+ {
+ ch = pstr->trans[ch];
+ pstr->mbs_case[byte_idx] = ch;
+ }
+ pstr->wcs[byte_idx] = iswlower (wc) ? toupper (wc) : wc;
+ pstr->mbs[byte_idx++] = islower (ch) ? toupper (ch) : ch;
+ if (BE (mbclen == (size_t) -1, 0))
+ pstr->cur_state = prev_st;
+ }
else /* mbclen > 1 */
- {
- if (iswlower (wc))
- wcrtomb ((char *) pstr->mbs + byte_idx, towupper (wc), &prev_st);
- else
- memcpy (pstr->mbs + byte_idx,
- pstr->raw_mbs + pstr->raw_mbs_idx + byte_idx, mbclen);
- pstr->wcs[byte_idx++] = iswlower (wc) ? toupper (wc) : wc;
- /* Write paddings. */
- for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
- pstr->wcs[byte_idx++] = WEOF;
- }
+ {
+ if (iswlower (wc))
+ wcrtomb ((char *) pstr->mbs + byte_idx, towupper (wc), &prev_st);
+ else
+ memcpy (pstr->mbs + byte_idx,
+ pstr->raw_mbs + pstr->raw_mbs_idx + byte_idx, mbclen);
+ pstr->wcs[byte_idx++] = iswlower (wc) ? toupper (wc) : wc;
+ /* Write paddings. */
+ for (remain_len = byte_idx + mbclen - 1; byte_idx < remain_len ;)
+ pstr->wcs[byte_idx++] = WEOF;
+ }
}
pstr->valid_len = byte_idx;
}
@@ -347,13 +352,13 @@ re_string_skip_chars (pstr, new_raw_idx)
int remain_len = pstr->len - rawbuf_idx;
prev_st = pstr->cur_state;
mbclen = mbrlen ((const char *) pstr->raw_mbs + rawbuf_idx, remain_len,
- &pstr->cur_state);
+ &pstr->cur_state);
if (BE (mbclen == (size_t) -2 || mbclen == (size_t) -1 || mbclen == 0, 0))
- {
- /* We treat these cases as a singlebyte character. */
- mbclen = 1;
- pstr->cur_state = prev_st;
- }
+ {
+ /* We treat these cases as a singlebyte character. */
+ mbclen = 1;
+ pstr->cur_state = prev_st;
+ }
/* Then proceed the next character. */
rawbuf_idx += mbclen;
}
@@ -361,7 +366,7 @@ re_string_skip_chars (pstr, new_raw_idx)
}
#endif /* RE_ENABLE_I18N */
-/* Build the buffer PSTR->MBS, and apply the translation if we need.
+/* Build the buffer PSTR->MBS, and apply the translation if we need.
This function is used in case of REG_ICASE. */
static void
@@ -375,14 +380,14 @@ build_upper_buffer (pstr)
{
int ch = pstr->raw_mbs[pstr->raw_mbs_idx + char_idx];
if (pstr->trans != NULL)
- {
- ch = pstr->trans[ch];
- pstr->mbs_case[char_idx] = ch;
- }
+ {
+ ch = pstr->trans[ch];
+ pstr->mbs_case[char_idx] = ch;
+ }
if (islower (ch))
- pstr->mbs[char_idx] = toupper (ch);
+ pstr->mbs[char_idx] = toupper (ch);
else
- pstr->mbs[char_idx] = ch;
+ pstr->mbs[char_idx] = ch;
}
pstr->valid_len = char_idx;
}
@@ -420,65 +425,65 @@ re_string_reconstruct (pstr, idx, eflags, newline)
/* Reset buffer. */
#ifdef RE_ENABLE_I18N
if (MB_CUR_MAX > 1)
- memset (&pstr->cur_state, '\0', sizeof (mbstate_t));
+ memset (&pstr->cur_state, '\0', sizeof (mbstate_t));
#endif /* RE_ENABLE_I18N */
pstr->len += pstr->raw_mbs_idx;
pstr->stop += pstr->raw_mbs_idx;
pstr->valid_len = pstr->raw_mbs_idx = 0;
pstr->tip_context = ((eflags & REG_NOTBOL) ? CONTEXT_BEGBUF
- : CONTEXT_NEWLINE | CONTEXT_BEGBUF);
+ : CONTEXT_NEWLINE | CONTEXT_BEGBUF);
if (!MBS_CASE_ALLOCATED (pstr))
- pstr->mbs_case = (unsigned char *) pstr->raw_mbs;
+ pstr->mbs_case = (unsigned char *) pstr->raw_mbs;
if (!MBS_ALLOCATED (pstr) && !MBS_CASE_ALLOCATED (pstr))
- pstr->mbs = (unsigned char *) pstr->raw_mbs;
+ pstr->mbs = (unsigned char *) pstr->raw_mbs;
offset = idx;
}
if (offset != 0)
{
pstr->tip_context = re_string_context_at (pstr, offset - 1, eflags,
- newline);
+ newline);
/* Are the characters which are already checked remain? */
if (offset < pstr->valid_len)
- {
- /* Yes, move them to the front of the buffer. */
+ {
+ /* Yes, move them to the front of the buffer. */
#ifdef RE_ENABLE_I18N
- if (MB_CUR_MAX > 1)
- memmove (pstr->wcs, pstr->wcs + offset,
- (pstr->valid_len - offset) * sizeof (wint_t));
+ if (MB_CUR_MAX > 1)
+ memmove (pstr->wcs, pstr->wcs + offset,
+ (pstr->valid_len - offset) * sizeof (wint_t));
#endif /* RE_ENABLE_I18N */
- if (MBS_ALLOCATED (pstr))
- memmove (pstr->mbs, pstr->mbs + offset,
- pstr->valid_len - offset);
- if (MBS_CASE_ALLOCATED (pstr))
- memmove (pstr->mbs_case, pstr->mbs_case + offset,
- pstr->valid_len - offset);
- pstr->valid_len -= offset;
+ if (MBS_ALLOCATED (pstr))
+ memmove (pstr->mbs, pstr->mbs + offset,
+ pstr->valid_len - offset);
+ if (MBS_CASE_ALLOCATED (pstr))
+ memmove (pstr->mbs_case, pstr->mbs_case + offset,
+ pstr->valid_len - offset);
+ pstr->valid_len -= offset;
#if DEBUG
- assert (pstr->valid_len > 0);
+ assert (pstr->valid_len > 0);
#endif
- }
+ }
else
- {
- /* No, skip all characters until IDX. */
- pstr->valid_len = 0;
+ {
+ /* No, skip all characters until IDX. */
+ pstr->valid_len = 0;
#ifdef RE_ENABLE_I18N
- if (MB_CUR_MAX > 1)
- {
- int wcs_idx;
- pstr->valid_len = re_string_skip_chars (pstr, idx) - idx;
- for (wcs_idx = 0; wcs_idx < pstr->valid_len; ++wcs_idx)
- pstr->wcs[wcs_idx] = WEOF;
- }
+ if (MB_CUR_MAX > 1)
+ {
+ int wcs_idx;
+ pstr->valid_len = re_string_skip_chars (pstr, idx) - idx;
+ for (wcs_idx = 0; wcs_idx < pstr->valid_len; ++wcs_idx)
+ pstr->wcs[wcs_idx] = WEOF;
+ }
#endif /* RE_ENABLE_I18N */
- }
+ }
if (!MBS_CASE_ALLOCATED (pstr))
- {
- pstr->mbs_case += offset;
- /* In case of !MBS_ALLOCATED && !MBS_CASE_ALLOCATED. */
- if (!MBS_ALLOCATED (pstr))
- pstr->mbs += offset;
- }
+ {
+ pstr->mbs_case += offset;
+ /* In case of !MBS_ALLOCATED && !MBS_CASE_ALLOCATED. */
+ if (!MBS_ALLOCATED (pstr))
+ pstr->mbs += offset;
+ }
}
pstr->raw_mbs_idx = idx;
pstr->len -= offset;
@@ -489,17 +494,17 @@ re_string_reconstruct (pstr, idx, eflags, newline)
if (MB_CUR_MAX > 1)
{
if (pstr->icase)
- build_wcs_upper_buffer (pstr);
+ build_wcs_upper_buffer (pstr);
else
- build_wcs_buffer (pstr);
+ build_wcs_buffer (pstr);
}
else
#endif /* RE_ENABLE_I18N */
{
if (pstr->icase)
- build_upper_buffer (pstr);
+ build_upper_buffer (pstr);
else if (pstr->trans != NULL)
- re_string_translate_buffer (pstr);
+ re_string_translate_buffer (pstr);
}
pstr->cur_idx = 0;
@@ -530,12 +535,12 @@ re_string_context_at (input, idx, eflags, newline_anchor)
if (idx < 0 || idx == input->len)
{
if (idx < 0)
- /* In this case, we use the value stored in input->tip_context,
- since we can't know the character in input->mbs[-1] here. */
- return input->tip_context;
+ /* In this case, we use the value stored in input->tip_context,
+ since we can't know the character in input->mbs[-1] here. */
+ return input->tip_context;
else /* (idx == input->len) */
- return ((eflags & REG_NOTEOL) ? CONTEXT_ENDBUF
- : CONTEXT_NEWLINE | CONTEXT_ENDBUF);
+ return ((eflags & REG_NOTEOL) ? CONTEXT_ENDBUF
+ : CONTEXT_NEWLINE | CONTEXT_ENDBUF);
}
c = re_string_byte_at (input, idx);
if (IS_WORD_CHAR (c))
@@ -590,15 +595,15 @@ re_node_set_init_2 (set, elem1, elem2)
{
set->nelem = 2;
if (elem1 < elem2)
- {
- set->elems[0] = elem1;
- set->elems[1] = elem2;
- }
+ {
+ set->elems[0] = elem1;
+ set->elems[1] = elem2;
+ }
else
- {
- set->elems[0] = elem2;
- set->elems[1] = elem1;
- }
+ {
+ set->elems[0] = elem2;
+ set->elems[1] = elem1;
+ }
}
return REG_NOERROR;
}
@@ -614,7 +619,7 @@ re_node_set_init_copy (dest, src)
dest->alloc = dest->nelem;
dest->elems = re_malloc (int, dest->alloc);
if (BE (dest->elems == NULL, 0))
- return REG_ESPACE;
+ return REG_ESPACE;
memcpy (dest->elems, src->elems, src->nelem * sizeof (int));
}
else
@@ -635,12 +640,12 @@ re_node_set_add_intersect (dest, src1, src2)
if (src1->nelem > 0 && src2->nelem > 0)
{
if (src1->nelem + src2->nelem + dest->nelem > dest->alloc)
- {
- dest->alloc = src1->nelem + src2->nelem + dest->nelem;
- dest->elems = re_realloc (dest->elems, int, dest->alloc);
- if (BE (dest->elems == NULL, 0))
- return REG_ESPACE;
- }
+ {
+ dest->alloc = src1->nelem + src2->nelem + dest->nelem;
+ dest->elems = re_realloc (dest->elems, int, dest->alloc);
+ if (BE (dest->elems == NULL, 0))
+ return REG_ESPACE;
+ }
}
else
return REG_NOERROR;
@@ -648,24 +653,24 @@ re_node_set_add_intersect (dest, src1, src2)
for (i1 = i2 = id = 0 ; i1 < src1->nelem && i2 < src2->nelem ;)
{
if (src1->elems[i1] > src2->elems[i2])
- {
- ++i2;
- continue;
- }
+ {
+ ++i2;
+ continue;
+ }
if (src1->elems[i1] == src2->elems[i2])
- {
- while (id < dest->nelem && dest->elems[id] < src2->elems[i2])
- ++id;
- if (id < dest->nelem && dest->elems[id] == src2->elems[i2])
- ++id;
- else
- {
- memmove (dest->elems + id + 1, dest->elems + id,
- sizeof (int) * (dest->nelem - id));
- dest->elems[id++] = src2->elems[i2++];
- ++dest->nelem;
- }
- }
+ {
+ while (id < dest->nelem && dest->elems[id] < src2->elems[i2])
+ ++id;
+ if (id < dest->nelem && dest->elems[id] == src2->elems[i2])
+ ++id;
+ else
+ {
+ memmove (dest->elems + id + 1, dest->elems + id,
+ sizeof (int) * (dest->nelem - id));
+ dest->elems[id++] = src2->elems[i2++];
+ ++dest->nelem;
+ }
+ }
++i1;
}
return REG_NOERROR;
@@ -685,39 +690,39 @@ re_node_set_init_union (dest, src1, src2)
dest->alloc = src1->nelem + src2->nelem;
dest->elems = re_malloc (int, dest->alloc);
if (BE (dest->elems == NULL, 0))
- return REG_ESPACE;
+ return REG_ESPACE;
}
else
{
if (src1 != NULL && src1->nelem > 0)
- return re_node_set_init_copy (dest, src1);
+ return re_node_set_init_copy (dest, src1);
else if (src2 != NULL && src2->nelem > 0)
- return re_node_set_init_copy (dest, src2);
+ return re_node_set_init_copy (dest, src2);
else
- re_node_set_init_empty (dest);
+ re_node_set_init_empty (dest);
return REG_NOERROR;
}
for (i1 = i2 = id = 0 ; i1 < src1->nelem && i2 < src2->nelem ;)
{
if (src1->elems[i1] > src2->elems[i2])
- {
- dest->elems[id++] = src2->elems[i2++];
- continue;
- }
+ {
+ dest->elems[id++] = src2->elems[i2++];
+ continue;
+ }
if (src1->elems[i1] == src2->elems[i2])
- ++i2;
+ ++i2;
dest->elems[id++] = src1->elems[i1++];
}
if (i1 < src1->nelem)
{
memcpy (dest->elems + id, src1->elems + i1,
- (src1->nelem - i1) * sizeof (int));
+ (src1->nelem - i1) * sizeof (int));
id += src1->nelem - i1;
}
else if (i2 < src2->nelem)
{
memcpy (dest->elems + id, src2->elems + i2,
- (src2->nelem - i2) * sizeof (int));
+ (src2->nelem - i2) * sizeof (int));
id += src2->nelem - i2;
}
dest->nelem = id;
@@ -737,10 +742,12 @@ re_node_set_merge (dest, src)
return REG_NOERROR;
if (dest->alloc < src->nelem + dest->nelem)
{
+ int *new_buffer;
dest->alloc = 2 * (src->nelem + dest->alloc);
- dest->elems = re_realloc (dest->elems, int, dest->alloc);
- if (BE (dest->elems == NULL, 0))
- return REG_ESPACE;
+ new_buffer = re_realloc (dest->elems, int, dest->alloc);
+ if (BE (new_buffer == NULL, 0))
+ return REG_ESPACE;
+ dest->elems = new_buffer;
}
for (si = 0, di = 0 ; si < src->nelem && di < dest->nelem ;)
@@ -749,34 +756,34 @@ re_node_set_merge (dest, src)
/* Binary search the spot we will add the new element. */
right = dest->nelem;
while (di < right)
- {
- mid = (di + right) / 2;
- if (dest->elems[mid] < src_elem)
- di = mid + 1;
- else
- right = mid;
- }
+ {
+ mid = (di + right) / 2;
+ if (dest->elems[mid] < src_elem)
+ di = mid + 1;
+ else
+ right = mid;
+ }
if (di >= dest->nelem)
- break;
+ break;
if (dest->elems[di] == src_elem)
- {
- /* Skip since, DEST already has the element. */
- ++di;
- ++si;
- continue;
- }
+ {
+ /* Skip since, DEST already has the element. */
+ ++di;
+ ++si;
+ continue;
+ }
/* Skip the src elements which are less than dest->elems[di]. */
cp_from = si;
while (si < src->nelem && src->elems[si] < dest->elems[di])
- ++si;
+ ++si;
/* Copy these src elements. */
ncp = si - cp_from;
memmove (dest->elems + di + ncp, dest->elems + di,
- sizeof (int) * (dest->nelem - di));
+ sizeof (int) * (dest->nelem - di));
memcpy (dest->elems + di, src->elems + cp_from,
- sizeof (int) * ncp);
+ sizeof (int) * ncp);
/* Update counters. */
di += ncp;
dest->nelem += ncp;
@@ -786,7 +793,7 @@ re_node_set_merge (dest, src)
if (si < src->nelem)
{
memcpy (dest->elems + di, src->elems + si,
- sizeof (int) * (src->nelem - si));
+ sizeof (int) * (src->nelem - si));
dest->nelem += src->nelem - si;
}
return REG_NOERROR;
@@ -806,9 +813,9 @@ re_node_set_insert (set, elem)
if (set->elems == NULL || set->alloc == 0)
{
if (BE (re_node_set_init_1 (set, elem) == REG_NOERROR, 1))
- return 1;
+ return 1;
else
- return -1;
+ return -1;
}
/* Binary search the spot we will add the new element. */
@@ -818,9 +825,9 @@ re_node_set_insert (set, elem)
{
mid = (idx + right) / 2;
if (set->elems[mid] < elem)
- idx = mid + 1;
+ idx = mid + 1;
else
- right = mid;
+ right = mid;
}
/* Realloc if we need. */
@@ -830,13 +837,13 @@ re_node_set_insert (set, elem)
set->alloc = set->alloc * 2;
new_array = re_malloc (int, set->alloc);
if (BE (new_array == NULL, 0))
- return -1;
+ return -1;
/* Copy the elements they are followed by the new element. */
if (idx > 0)
- memcpy (new_array, set->elems, sizeof (int) * (idx));
+ memcpy (new_array, set->elems, sizeof (int) * (idx));
/* Copy the elements which follows the new element. */
if (set->nelem - idx > 0)
- memcpy (new_array + idx + 1, set->elems + idx,
+ memcpy (new_array + idx + 1, set->elems + idx,
sizeof (int) * (set->nelem - idx));
re_free (set->elems);
set->elems = new_array;
@@ -845,8 +852,8 @@ re_node_set_insert (set, elem)
{
/* Move the elements which follows the new element. */
if (set->nelem - idx > 0)
- memmove (set->elems + idx + 1, set->elems + idx,
- sizeof (int) * (set->nelem - idx));
+ memmove (set->elems + idx + 1, set->elems + idx,
+ sizeof (int) * (set->nelem - idx));
}
/* Insert the new element. */
set->elems[idx] = elem;
@@ -888,9 +895,9 @@ re_node_set_contains (set, elem)
{
mid = (idx + right) / 2;
if (set->elems[mid] < elem)
- idx = mid + 1;
+ idx = mid + 1;
else
- right = mid;
+ right = mid;
}
return set->elems[idx] == elem ? idx + 1 : 0;
}
@@ -904,7 +911,7 @@ re_node_set_remove_at (set, idx)
return;
if (idx < set->nelem - 1)
memmove (set->elems + idx, set->elems + idx + 1,
- sizeof (int) * (set->nelem - idx - 1));
+ sizeof (int) * (set->nelem - idx - 1));
--set->nelem;
}
@@ -924,28 +931,28 @@ re_dfa_add_node (dfa, token, mode)
dfa->nodes_alloc *= 2;
new_array = re_realloc (dfa->nodes, re_token_t, dfa->nodes_alloc);
if (BE (new_array == NULL, 0))
- return -1;
+ return -1;
else
- dfa->nodes = new_array;
+ dfa->nodes = new_array;
if (mode)
- {
- int *new_nexts;
- re_node_set *new_edests, *new_eclosures, *new_inveclosures;
-
- new_nexts = re_realloc (dfa->nexts, int, dfa->nodes_alloc);
- new_edests = re_realloc (dfa->edests, re_node_set, dfa->nodes_alloc);
- new_eclosures = re_realloc (dfa->eclosures, re_node_set,
- dfa->nodes_alloc);
- new_inveclosures = re_realloc (dfa->inveclosures, re_node_set,
- dfa->nodes_alloc);
- if (BE (new_nexts == NULL || new_edests == NULL
- || new_eclosures == NULL || new_inveclosures == NULL, 0))
- return -1;
- dfa->nexts = new_nexts;
- dfa->edests = new_edests;
- dfa->eclosures = new_eclosures;
- dfa->inveclosures = new_inveclosures;
- }
+ {
+ int *new_nexts;
+ re_node_set *new_edests, *new_eclosures, *new_inveclosures;
+
+ new_nexts = re_realloc (dfa->nexts, int, dfa->nodes_alloc);
+ new_edests = re_realloc (dfa->edests, re_node_set, dfa->nodes_alloc);
+ new_eclosures = re_realloc (dfa->eclosures, re_node_set,
+ dfa->nodes_alloc);
+ new_inveclosures = re_realloc (dfa->inveclosures, re_node_set,
+ dfa->nodes_alloc);
+ if (BE (new_nexts == NULL || new_edests == NULL
+ || new_eclosures == NULL || new_inveclosures == NULL, 0))
+ return -1;
+ dfa->nexts = new_nexts;
+ dfa->edests = new_edests;
+ dfa->eclosures = new_eclosures;
+ dfa->inveclosures = new_inveclosures;
+ }
}
dfa->nodes[dfa->nodes_len] = token;
dfa->nodes[dfa->nodes_len].duplicated = 0;
@@ -970,9 +977,9 @@ calc_state_hash (nodes, context)
Otherwise create the new one and return it. In case of an error
return NULL and set the error code in ERR.
Note: - We assume NULL as the invalid state, then it is possible that
- return value is NULL and ERR is REG_NOERROR.
- - We never return non-NULL value in case of any errors, it is for
- optimization. */
+ return value is NULL and ERR is REG_NOERROR.
+ - We never return non-NULL value in case of any errors, it is for
+ optimization. */
static re_dfastate_t*
re_acquire_state (err, dfa, nodes)
@@ -996,9 +1003,9 @@ re_acquire_state (err, dfa, nodes)
{
re_dfastate_t *state = spot->array[i];
if (hash != state->hash)
- continue;
+ continue;
if (re_node_set_compare (&state->nodes, nodes))
- return state;
+ return state;
}
/* There are no appropriate state in the dfa, create the new one. */
@@ -1018,9 +1025,9 @@ re_acquire_state (err, dfa, nodes)
Otherwise create the new one and return it. In case of an error
return NULL and set the error code in ERR.
Note: - We assume NULL as the invalid state, then it is possible that
- return value is NULL and ERR is REG_NOERROR.
- - We never return non-NULL value in case of any errors, it is for
- optimization. */
+ return value is NULL and ERR is REG_NOERROR.
+ - We never return non-NULL value in case of any errors, it is for
+ optimization. */
static re_dfastate_t*
re_acquire_state_context (err, dfa, nodes, context)
@@ -1045,10 +1052,10 @@ re_acquire_state_context (err, dfa, nodes, context)
{
re_dfastate_t *state = spot->array[i];
if (hash != state->hash)
- continue;
+ continue;
if (re_node_set_compare (state->entrance_nodes, nodes)
- && state->context == context)
- return state;
+ && state->context == context)
+ return state;
}
/* There are no appropriate state in `dfa', create the new one. */
new_state = create_cd_newstate (dfa, nodes, context, hash);
@@ -1071,10 +1078,16 @@ create_newstate_common (dfa, nodes, hash)
unsigned int hash;
{
re_dfastate_t *newstate;
+ reg_errcode_t err;
newstate = (re_dfastate_t *) calloc (sizeof (re_dfastate_t), 1);
if (BE (newstate == NULL, 0))
return NULL;
- re_node_set_init_copy (&newstate->nodes, nodes);
+ err = re_node_set_init_copy (&newstate->nodes, nodes);
+ if (BE (err != REG_NOERROR, 0))
+ {
+ re_free (newstate);
+ return NULL;
+ }
newstate->trtable = NULL;
newstate->trtable_search = NULL;
newstate->hash = hash;
@@ -1095,10 +1108,12 @@ register_state (dfa, newstate, hash)
if (spot->alloc <= spot->num)
{
+ re_dfastate_t **new_array;
spot->alloc = 2 * spot->num + 2;
- spot->array = re_realloc (spot->array, re_dfastate_t *, spot->alloc);
- if (BE (spot->array == NULL, 0))
- return REG_ESPACE;
+ new_array = re_realloc (spot->array, re_dfastate_t *, spot->alloc);
+ if (BE (new_array == NULL, 0))
+ return REG_ESPACE;
+ spot->array = new_array;
}
spot->array[spot->num++] = newstate;
return REG_NOERROR;
@@ -1126,23 +1141,28 @@ create_ci_newstate (dfa, nodes, hash)
re_token_t *node = dfa->nodes + nodes->elems[i];
re_token_type_t type = node->type;
if (type == CHARACTER && !node->constraint)
- continue;
+ continue;
/* If the state has the halt node, the state is a halt state. */
else if (type == END_OF_RE)
- newstate->halt = 1;
+ newstate->halt = 1;
#ifdef RE_ENABLE_I18N
else if (type == COMPLEX_BRACKET
- || (type == OP_PERIOD && MB_CUR_MAX > 1))
- newstate->accept_mb = 1;
+ || (type == OP_PERIOD && MB_CUR_MAX > 1))
+ newstate->accept_mb = 1;
#endif /* RE_ENABLE_I18N */
else if (type == OP_BACK_REF)
- newstate->has_backref = 1;
+ newstate->has_backref = 1;
else if (type == ANCHOR || node->constraint)
- newstate->has_constraint = 1;
+ newstate->has_constraint = 1;
}
err = register_state (dfa, newstate, hash);
- return (err != REG_NOERROR) ? NULL : newstate;
+ if (BE (err != REG_NOERROR, 0))
+ {
+ free_state (newstate);
+ newstate = NULL;
+ }
+ return newstate;
}
/* Create the new state which is depend on the context CONTEXT.
@@ -1170,42 +1190,65 @@ create_cd_newstate (dfa, nodes, context, hash)
re_token_t *node = dfa->nodes + nodes->elems[i];
re_token_type_t type = node->type;
if (node->constraint)
- constraint = node->constraint;
+ constraint = node->constraint;
if (type == CHARACTER && !constraint)
- continue;
+ continue;
/* If the state has the halt node, the state is a halt state. */
else if (type == END_OF_RE)
- newstate->halt = 1;
+ newstate->halt = 1;
#ifdef RE_ENABLE_I18N
else if (type == COMPLEX_BRACKET
- || (type == OP_PERIOD && MB_CUR_MAX > 1))
- newstate->accept_mb = 1;
+ || (type == OP_PERIOD && MB_CUR_MAX > 1))
+ newstate->accept_mb = 1;
#endif /* RE_ENABLE_I18N */
else if (type == OP_BACK_REF)
- newstate->has_backref = 1;
+ newstate->has_backref = 1;
else if (type == ANCHOR)
- constraint = node->opr.ctx_type;
+ constraint = node->opr.ctx_type;
if (constraint)
- {
- if (newstate->entrance_nodes == &newstate->nodes)
- {
- newstate->entrance_nodes = re_malloc (re_node_set, 1);
+ {
+ if (newstate->entrance_nodes == &newstate->nodes)
+ {
+ newstate->entrance_nodes = re_malloc (re_node_set, 1);
if (BE (newstate->entrance_nodes == NULL, 0))
- return NULL;
- re_node_set_init_copy (newstate->entrance_nodes, nodes);
- nctx_nodes = 0;
- newstate->has_constraint = 1;
- }
-
- if (NOT_SATISFY_PREV_CONSTRAINT (constraint,context))
- {
- re_node_set_remove_at (&newstate->nodes, i - nctx_nodes);
- ++nctx_nodes;
- }
- }
+ {
+ free_state (newstate);
+ return NULL;
+ }
+ re_node_set_init_copy (newstate->entrance_nodes, nodes);
+ nctx_nodes = 0;
+ newstate->has_constraint = 1;
+ }
+
+ if (NOT_SATISFY_PREV_CONSTRAINT (constraint,context))
+ {
+ re_node_set_remove_at (&newstate->nodes, i - nctx_nodes);
+ ++nctx_nodes;
+ }
+ }
}
err = register_state (dfa, newstate, hash);
- return (err != REG_NOERROR) ? NULL : newstate;
+ if (BE (err != REG_NOERROR, 0))
+ {
+ free_state (newstate);
+ newstate = NULL;
+ }
+ return newstate;
+}
+
+static void
+free_state (state)
+ re_dfastate_t *state;
+{
+ if (state->entrance_nodes != &state->nodes)
+ {
+ re_node_set_free (state->entrance_nodes);
+ re_free (state->entrance_nodes);
+ }
+ re_node_set_free (&state->nodes);
+ re_free (state->trtable);
+ re_free (state->trtable_search);
+ re_free (state);
}
diff --git a/posix/regexec.c b/posix/regexec.c
index 511b979f2a..17c469c47f 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -85,7 +85,7 @@ static int proceed_next_node (const regex_t *preg, int nregs, regmatch_t *regs,
const re_match_context_t *mctx,
int *pidx, int node, re_node_set *eps_via_nodes,
struct re_fail_stack_t *fs);
-static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
+static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
int str_idx, int *dests, int nregs,
regmatch_t *regs,
re_node_set *eps_via_nodes);
@@ -337,7 +337,7 @@ re_search_2_stub (bufp, string1, length1, string2, length2, start, range, regs,
rval = re_search_stub (bufp, str, len, start, range, stop, regs,
ret_len);
if (free_str)
- re_free ((char *) str);
+ re_free ((char *) str);
return rval;
}
@@ -575,9 +575,10 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
re_string_t input;
int left_lim, right_lim, incr;
int fl_longest_match, match_first, match_last = -1;
+ int fast_translate, sb;
re_match_context_t mctx;
- char *fastmap = ((preg->fastmap != NULL && preg->fastmap_accurate)
- ? preg->fastmap : NULL);
+ char *fastmap = ((preg->fastmap != NULL && preg->fastmap_accurate
+ && range && !preg->can_be_null) ? preg->fastmap : NULL);
/* Check if the DFA haven't been compiled. */
if (BE (preg->used == 0 || dfa->init_state == NULL
@@ -586,6 +587,7 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
return REG_NOMATCH;
re_node_set_init_empty (&empty_set);
+ memset (&mctx, '\0', sizeof (re_match_context_t));
/* We must check the longest matching, if nmatch > 0. */
fl_longest_match = (nmatch != 0);
@@ -593,12 +595,12 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
err = re_string_allocate (&input, string, length, dfa->nodes_len + 1,
preg->translate, preg->syntax & RE_ICASE);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
input.stop = stop;
err = match_ctx_init (&mctx, eflags, &input, dfa->nbackref * 2);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
/* We will log all the DFA states through which the dfa pass,
if nmatch > 1, or this dfa has "multibyte node", which is a
@@ -608,7 +610,10 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
{
mctx.state_log = re_malloc (re_dfastate_t *, dfa->nodes_len + 1);
if (BE (mctx.state_log == NULL, 0))
- return REG_ESPACE;
+ {
+ err = REG_ESPACE;
+ goto free_return;
+ }
}
else
mctx.state_log = NULL;
@@ -626,65 +631,117 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
incr = (range < 0) ? -1 : 1;
left_lim = (range < 0) ? start + range : start;
right_lim = (range < 0) ? start : start + range;
+ sb = MB_CUR_MAX == 1;
+ fast_translate = sb || !(preg->syntax & RE_ICASE || preg->translate);
for (;;)
{
/* At first get the current byte from input string. */
- int ch;
- if (MB_CUR_MAX > 1 && (preg->syntax & RE_ICASE || preg->translate))
- {
- /* In this case, we can't determin easily the current byte,
- since it might be a component byte of a multibyte character.
- Then we use the constructed buffer instead. */
- /* If MATCH_FIRST is out of the valid range, reconstruct the
- buffers. */
- if (input.raw_mbs_idx + input.valid_len <= match_first)
- re_string_reconstruct (&input, match_first, eflags,
- preg->newline_anchor);
- /* If MATCH_FIRST is out of the buffer, leave it as '\0'.
- Note that MATCH_FIRST must not be smaller than 0. */
- ch = ((match_first >= length) ? 0
- : re_string_byte_at (&input, match_first - input.raw_mbs_idx));
- }
- else
- {
- /* We apply translate/conversion manually, since it is trivial
- in this case. */
- /* If MATCH_FIRST is out of the buffer, leave it as '\0'.
- Note that MATCH_FIRST must not be smaller than 0. */
- ch = (match_first < length) ? (unsigned char)string[match_first] : 0;
- /* Apply translation if we need. */
- ch = preg->translate ? preg->translate[ch] : ch;
- /* In case of case insensitive mode, convert to upper case. */
- ch = ((preg->syntax & RE_ICASE) && islower (ch)) ? toupper (ch) : ch;
- }
+ if (fastmap)
+ {
+ if (BE (fast_translate, 1))
+ {
+ unsigned RE_TRANSLATE_TYPE t
+ = (unsigned RE_TRANSLATE_TYPE) preg->translate;
+ if (BE (range >= 0, 1))
+ {
+ if (BE (t != NULL, 0))
+ {
+ while (BE (match_first < right_lim, 1)
+ && !fastmap[t[(unsigned char) string[match_first]]])
+ ++match_first;
+ }
+ else
+ {
+ while (BE (match_first < right_lim, 1)
+ && !fastmap[(unsigned char) string[match_first]])
+ ++match_first;
+ }
+ if (BE (match_first == right_lim, 0))
+ {
+ int ch = match_first >= length
+ ? 0 : (unsigned char) string[match_first];
+ if (!fastmap[t ? t[ch] : ch])
+ break;
+ }
+ }
+ else
+ {
+ while (match_first >= left_lim)
+ {
+ int ch = match_first >= length
+ ? 0 : (unsigned char) string[match_first];
+ if (fastmap[t ? t[ch] : ch])
+ break;
+ --match_first;
+ }
+ if (match_first < left_lim)
+ break;
+ }
+ }
+ else
+ {
+ int ch;
+
+ do
+ {
+ /* In this case, we can't determine easily the current byte,
+ since it might be a component byte of a multibyte
+ character. Then we use the constructed buffer
+ instead. */
+ /* If MATCH_FIRST is out of the valid range, reconstruct the
+ buffers. */
+ if (input.raw_mbs_idx + input.valid_len <= match_first
+ || match_first < input.raw_mbs_idx)
+ {
+ err = re_string_reconstruct (&input, match_first, eflags,
+ preg->newline_anchor);
+ if (BE (err != REG_NOERROR, 0))
+ goto free_return;
+ }
+ /* If MATCH_FIRST is out of the buffer, leave it as '\0'.
+ Note that MATCH_FIRST must not be smaller than 0. */
+ ch = ((match_first >= length) ? 0
+ : re_string_byte_at (&input,
+ match_first - input.raw_mbs_idx));
+ if (fastmap[ch])
+ break;
+ match_first += incr;
+ }
+ while (match_first >= left_lim && match_first <= right_lim);
+ if (! fastmap[ch])
+ break;
+ }
+ }
- /* Eliminate inappropriate one by fastmap. */
- if (preg->can_be_null || fastmap == NULL || fastmap[ch])
- {
- /* Reconstruct the buffers so that the matcher can assume that
- the matching starts from the begining of the buffer. */
- re_string_reconstruct (&input, match_first, eflags,
- preg->newline_anchor);
+ /* Reconstruct the buffers so that the matcher can assume that
+ the matching starts from the begining of the buffer. */
+ err = re_string_reconstruct (&input, match_first, eflags,
+ preg->newline_anchor);
+ if (BE (err != REG_NOERROR, 0))
+ goto free_return;
#ifdef RE_ENABLE_I18N
- /* Eliminate it when it is a component of a multibyte character
- and isn't the head of a multibyte character. */
- if (MB_CUR_MAX == 1 || re_string_first_byte (&input, 0))
+ /* Eliminate it when it is a component of a multibyte character
+ and isn't the head of a multibyte character. */
+ if (sb || re_string_first_byte (&input, 0))
#endif
- {
- /* It seems to be appropriate one, then use the matcher. */
- /* We assume that the matching starts from 0. */
- mctx.state_log_top = mctx.nbkref_ents = mctx.max_mb_elem_len = 0;
- match_last = check_matching (preg, &mctx, 0, fl_longest_match);
- if (match_last != -1)
- {
- if (BE (match_last == -2, 0))
- return REG_ESPACE;
- else
- break; /* We found a matching. */
- }
- }
- }
+ {
+ /* It seems to be appropriate one, then use the matcher. */
+ /* We assume that the matching starts from 0. */
+ mctx.state_log_top = mctx.nbkref_ents = mctx.max_mb_elem_len = 0;
+ match_last = check_matching (preg, &mctx, 0, fl_longest_match);
+ if (match_last != -1)
+ {
+ if (BE (match_last == -2, 0))
+ {
+ err = REG_ESPACE;
+ goto free_return;
+ }
+ else
+ break; /* We found a matching. */
+ }
+ }
+
/* Update counter. */
match_first += incr;
if (match_first < left_lim || right_lim < match_first)
@@ -722,28 +779,42 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
match_ctx_clear_flag (&mctx);
sifted_states = re_malloc (re_dfastate_t *, match_last + 1);
if (BE (sifted_states == NULL, 0))
- return REG_ESPACE;
+ {
+ err = REG_ESPACE;
+ goto free_return;
+ }
if (dfa->nbackref)
{
lim_states = calloc (sizeof (re_dfastate_t *),
match_last + 1);
if (BE (lim_states == NULL, 0))
- return REG_ESPACE;
+ {
+ re_free (sifted_states);
+ err = REG_ESPACE;
+ goto free_return;
+ }
}
sift_ctx_init (&sctx, sifted_states, lim_states, halt_node,
mctx.match_last, 0);
err = sift_states_backward (preg, &mctx, &sctx);
+ re_node_set_free (&sctx.limits);
if (BE (err != REG_NOERROR, 0))
- return err;
+ {
+ re_free (sifted_states);
+ re_free (lim_states);
+ goto free_return;
+ }
if (lim_states != NULL)
{
err = merge_state_array (dfa, sifted_states, lim_states,
match_last + 1);
- if (BE (err != REG_NOERROR, 0))
- return err;
re_free (lim_states);
+ if (BE (err != REG_NOERROR, 0))
+ {
+ re_free (sifted_states);
+ goto free_return;
+ }
}
- re_node_set_free (&sctx.limits);
re_free (mctx.state_log);
mctx.state_log = sifted_states;
}
@@ -751,7 +822,7 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
err = set_regs (preg, &mctx, nmatch, pmatch,
dfa->has_plural_match && dfa->nbackref > 0);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
/* At last, add the offset to the each registers, since we slided
@@ -763,13 +834,13 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
pmatch[reg_idx].rm_eo += match_first;
}
}
-
+ err = (match_last == -1) ? REG_NOMATCH : REG_NOERROR;
+ free_return:
re_free (mctx.state_log);
if (dfa->nbackref)
match_ctx_free (&mctx);
re_string_destruct (&input);
-
- return (match_last == -1) ? REG_NOMATCH : REG_NOERROR;
+ return err;
}
/* Acquire an initial state and return it.
@@ -1099,11 +1170,13 @@ push_fail_stack (fs, str_idx, dests, nregs, regs, eps_via_nodes)
int num = fs->num++;
if (fs->num == fs->alloc)
{
+ struct re_fail_stack_ent_t *new_array;
fs->alloc *= 2;
- fs->stack = realloc (fs->stack, (sizeof (struct re_fail_stack_ent_t)
+ new_array = realloc (fs->stack, (sizeof (struct re_fail_stack_ent_t)
* fs->alloc));
- if (fs->stack == NULL)
+ if (new_array == NULL)
return REG_ESPACE;
+ fs->stack = new_array;
}
fs->stack[num].idx = str_idx;
fs->stack[num].node = dests[1];
@@ -1112,7 +1185,7 @@ push_fail_stack (fs, str_idx, dests, nregs, regs, eps_via_nodes)
err = re_node_set_init_copy (&fs->stack[num].eps_via_nodes, eps_via_nodes);
return err;
}
-
+
static int
pop_fail_stack (fs, pidx, nregs, regs, eps_via_nodes)
struct re_fail_stack_t *fs;
@@ -1301,7 +1374,7 @@ sift_states_backward (preg, mctx, sctx)
return err;
err = update_cur_sifted_state (preg, mctx, sctx, str_idx, &cur_dest);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
/* Then check each states in the state_log. */
while (str_idx > 0)
@@ -1365,7 +1438,10 @@ sift_states_backward (preg, mctx, sctx)
}
ret = re_node_set_insert (&cur_dest, prev_node);
if (BE (ret == -1, 0))
- return err;
+ {
+ err = REG_ESPACE;
+ goto free_return;
+ }
}
/* Add all the nodes which satisfy the following conditions:
@@ -1374,11 +1450,12 @@ sift_states_backward (preg, mctx, sctx)
And update state_log. */
err = update_cur_sifted_state (preg, mctx, sctx, str_idx, &cur_dest);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
-
+ err = REG_NOERROR;
+ free_return:
re_node_set_free (&cur_dest);
- return REG_NOERROR;
+ return err;
}
/* Helper functions. */
@@ -1409,7 +1486,8 @@ clean_state_log_if_need (mctx, next_state_log_idx)
return REG_NOERROR;
}
-static reg_errcode_t merge_state_array (dfa, dst, src, num)
+static reg_errcode_t
+merge_state_array (dfa, dst, src, num)
re_dfa_t *dfa;
re_dfastate_t **dst;
re_dfastate_t **src;
@@ -1429,9 +1507,9 @@ static reg_errcode_t merge_state_array (dfa, dst, src, num)
if (BE (err != REG_NOERROR, 0))
return err;
dst[st_idx] = re_acquire_state (&err, dfa, &merged_set);
+ re_node_set_free (&merged_set);
if (BE (err != REG_NOERROR, 0))
return err;
- re_node_set_free (&merged_set);
}
}
return REG_NOERROR;
@@ -1512,7 +1590,10 @@ add_epsilon_src_nodes (dfa, dest_nodes, candidates)
dfa->inveclosures
+ src_copy.elems[src_idx]);
if (BE (err != REG_NOERROR, 0))
- return err;
+ {
+ re_node_set_free (&src_copy);
+ return err;
+ }
}
re_node_set_free (&src_copy);
return REG_NOERROR;
@@ -1549,7 +1630,10 @@ sub_epsilon_src_nodes (dfa, node, dest_nodes, candidates)
err = re_node_set_add_intersect (&except_nodes, candidates,
dfa->inveclosures + cur_node);
if (BE (err != REG_NOERROR, 0))
- return err;
+ {
+ re_node_set_free (&except_nodes);
+ return err;
+ }
}
}
}
@@ -1791,7 +1875,7 @@ search_subexp (preg, mctx, sctx, str_idx, dest_nodes)
local_sctx = *sctx;
err = re_node_set_init_copy (&local_sctx.limits, &sctx->limits);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
local_sctx.check_subexp = -sctx->check_subexp;
local_sctx.limited_states = sctx->limited_states;
@@ -1801,7 +1885,7 @@ search_subexp (preg, mctx, sctx, str_idx, dest_nodes)
err = sift_states_backward (preg, mctx, &local_sctx);
local_sctx.sifted_states[str_idx] = cur_state;
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
/* There must not 2 same node in a node set. */
break;
}
@@ -1823,7 +1907,7 @@ search_subexp (preg, mctx, sctx, str_idx, dest_nodes)
reg_errcode_t err;
err = extend_buffers (mctx);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
buf = (char *) re_string_get_buffer (mctx->input);
if (strncmp (buf + str_idx, buf + bkref_str_idx, subexp_len) != 0)
@@ -1835,17 +1919,20 @@ search_subexp (preg, mctx, sctx, str_idx, dest_nodes)
if (lim_states == NULL)
{
lim_states = re_malloc (re_dfastate_t *, str_idx + 1);
+ if (BE (lim_states == NULL, 0))
+ {
+ err = REG_ESPACE;
+ goto free_return;
+ }
}
if (local_sctx.sifted_states == NULL)
{
/* It hasn't been initialized yet, initialize it now. */
local_sctx = *sctx;
- if (BE (lim_states == NULL, 0))
- return REG_ESPACE;
err = re_node_set_init_copy (&local_sctx.limits,
&sctx->limits);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
local_sctx.check_subexp = 0;
local_sctx.last_node = node;
@@ -1855,7 +1942,7 @@ search_subexp (preg, mctx, sctx, str_idx, dest_nodes)
sizeof (re_dfastate_t*) * (str_idx + 1));
err = sift_states_backward (preg, mctx, &local_sctx);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
if (local_sctx.sifted_states[0] == NULL
&& local_sctx.limited_states[0] == NULL)
{
@@ -1869,10 +1956,10 @@ search_subexp (preg, mctx, sctx, str_idx, dest_nodes)
err = match_ctx_add_entry (mctx, sctx->cur_bkref, bkref_str_idx,
str_idx, sctx->cls_subexp_idx);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
err = clean_state_log_if_need (mctx, dest_str_idx);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
break;
}
}
@@ -1882,18 +1969,19 @@ search_subexp (preg, mctx, sctx, str_idx, dest_nodes)
{
err = sub_epsilon_src_nodes(dfa, node, dest_nodes, candidates);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
/* Update state_log. */
sctx->sifted_states[str_idx] = re_acquire_state (&err, dfa, dest_nodes);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
-
+ err = REG_NOERROR;
+ free_return:
if (local_sctx.sifted_states != NULL)
re_node_set_free (&local_sctx.limits);
if (lim_states != NULL)
re_free (lim_states);
- return REG_NOERROR;
+ return err;
}
static reg_errcode_t
@@ -1958,11 +2046,11 @@ sift_states_bkref (preg, mctx, sctx, str_idx, dest_nodes)
cur_bkref_idx, entry->subexp_from,
entry->subexp_to);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
err = clean_state_log_if_need (mctx, cur_bkref_idx
+ subexp_len);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
else
{
@@ -1984,24 +2072,27 @@ sift_states_bkref (preg, mctx, sctx, str_idx, dest_nodes)
err = re_node_set_init_copy (&local_sctx.limits,
&sctx->limits);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
local_sctx.last_node = node;
local_sctx.last_str_idx = str_idx;
err = re_node_set_insert (&local_sctx.limits, enabled_idx);
if (BE (err < 0, 0))
- return REG_ESPACE;
+ {
+ err = REG_ESPACE;
+ goto free_return;
+ }
cur_state = local_sctx.sifted_states[str_idx];
err = sift_states_backward (preg, mctx, &local_sctx);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
if (sctx->limited_states != NULL)
{
err = merge_state_array (dfa, sctx->limited_states,
local_sctx.sifted_states,
str_idx + 1);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
local_sctx.sifted_states[str_idx] = cur_state;
re_node_set_remove (&local_sctx.limits, enabled_idx);
@@ -2019,12 +2110,14 @@ sift_states_bkref (preg, mctx, sctx, str_idx, dest_nodes)
}
}
}
+ err = REG_NOERROR;
+ free_return:
if (local_sctx.sifted_states != NULL)
{
re_node_set_free (&local_sctx.limits);
}
- return REG_NOERROR;
+ return err;
}
@@ -2215,7 +2308,10 @@ transit_state_sb (err, preg, state, fl_search, mctx)
*err = re_node_set_merge (&next_nodes,
dfa->eclosures + dfa->nexts[cur_node]);
if (BE (*err != REG_NOERROR, 0))
- return NULL;
+ {
+ re_node_set_free (&next_nodes);
+ return NULL;
+ }
}
}
if (fl_search)
@@ -2235,7 +2331,10 @@ transit_state_sb (err, preg, state, fl_search, mctx)
*err = re_node_set_merge (&next_nodes,
dfa->init_state->entrance_nodes);
if (BE (*err != REG_NOERROR, 0))
- return NULL;
+ {
+ re_node_set_free (&next_nodes);
+ return NULL;
+ }
}
}
context = re_string_context_at (mctx->input, cur_str_idx, mctx->eflags,
@@ -2313,10 +2412,10 @@ transit_state_mb (preg, pstate, mctx)
preg->newline_anchor);
mctx->state_log[dest_idx]
= re_acquire_state_context (&err, dfa, &dest_nodes, context);
- if (BE (mctx->state_log[dest_idx] == NULL && err != REG_NOERROR, 0))
- return err;
if (dest_state != NULL)
re_node_set_free (&dest_nodes);
+ if (BE (mctx->state_log[dest_idx] == NULL && err != REG_NOERROR, 0))
+ return err;
}
return REG_NOERROR;
}
@@ -2389,7 +2488,7 @@ transit_state_bkref_loop (preg, nodes, work_state_log, mctx)
match_ctx_clear_flag (mctx);
err = sift_states_backward (preg, mctx, &sctx);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
/* And add the epsilon closures (which is `new_dest_nodes') of
the backreference to appropriate state_log. */
@@ -2424,7 +2523,7 @@ transit_state_bkref_loop (preg, nodes, work_state_log, mctx)
context);
if (BE (mctx->state_log[dest_str_idx] == NULL
&& err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
else
{
@@ -2433,13 +2532,16 @@ transit_state_bkref_loop (preg, nodes, work_state_log, mctx)
dest_state->entrance_nodes,
new_dest_nodes);
if (BE (err != REG_NOERROR, 0))
- return err;
+ {
+ re_node_set_free (&dest_nodes);
+ goto free_return;
+ }
mctx->state_log[dest_str_idx]
= re_acquire_state_context (&err, dfa, &dest_nodes, context);
+ re_node_set_free (&dest_nodes);
if (BE (mctx->state_log[dest_str_idx] == NULL
&& err != REG_NOERROR, 0))
- return err;
- re_node_set_free (&dest_nodes);
+ goto free_return;
}
/* We need to check recursively if the backreference can epsilon
transit. */
@@ -2449,12 +2551,14 @@ transit_state_bkref_loop (preg, nodes, work_state_log, mctx)
err = transit_state_bkref_loop (preg, new_dest_nodes,
work_state_log, mctx);
if (BE (err != REG_NOERROR, 0))
- return err;
+ goto free_return;
}
}
}
+ err = REG_NOERROR;
+ free_return:
re_free (cur_regs);
- return REG_NOERROR;
+ return err;
}
/* Build transition table for the state.
@@ -2776,14 +2880,14 @@ group_nodes_into_DFAstates (preg, state, dests_node, dests_ch)
bitset_copy (dests_ch[j], intersec);
err = re_node_set_init_copy (dests_node + ndests, &dests_node[j]);
if (BE (err != REG_NOERROR, 0))
- return -1;
+ goto error_return;
++ndests;
}
/* Put the position in the current group. */
err = re_node_set_insert (&dests_node[j], cur_nodes->elems[i]);
if (BE (err < 0, 0))
- return -1;
+ goto error_return;
/* If all characters are consumed, go to next node. */
if (!not_consumed)
@@ -2795,12 +2899,16 @@ group_nodes_into_DFAstates (preg, state, dests_node, dests_ch)
bitset_copy (dests_ch[ndests], accepts);
err = re_node_set_init_1 (dests_node + ndests, cur_nodes->elems[i]);
if (BE (err != REG_NOERROR, 0))
- return -1;
+ goto error_return;
++ndests;
bitset_empty (accepts);
}
}
return ndests;
+ error_return:
+ for (j = 0; j < ndests; ++j)
+ re_node_set_free (dests_node + j);
+ return -1;
}
#ifdef RE_ENABLE_I18N
@@ -3099,10 +3207,12 @@ extend_buffers (mctx)
if (mctx->state_log != NULL)
{
/* And double the length of state_log. */
- mctx->state_log = re_realloc (mctx->state_log, re_dfastate_t *,
- pstr->bufs_len * 2);
- if (BE (mctx->state_log == NULL, 0))
+ re_dfastate_t **new_array;
+ new_array = re_realloc (mctx->state_log, re_dfastate_t *,
+ pstr->bufs_len * 2);
+ if (BE (new_array == NULL, 0))
return REG_ESPACE;
+ mctx->state_log = new_array;
}
/* Then reconstruct the buffers. */
@@ -3174,13 +3284,17 @@ match_ctx_add_entry (mctx, node, str_idx, from, to)
{
if (mctx->nbkref_ents >= mctx->abkref_ents)
{
- mctx->bkref_ents = re_realloc (mctx->bkref_ents,
- struct re_backref_cache_entry,
- mctx->abkref_ents * 2);
- if (BE (mctx->bkref_ents == NULL, 0))
- return REG_ESPACE;
+ struct re_backref_cache_entry* new_entry;
+ new_entry = re_realloc (mctx->bkref_ents, struct re_backref_cache_entry,
+ mctx->abkref_ents * 2);
+ if (BE (new_entry == NULL, 0))
+ {
+ re_free (mctx->bkref_ents);
+ return REG_ESPACE;
+ }
+ mctx->bkref_ents = new_entry;
memset (mctx->bkref_ents + mctx->nbkref_ents, '\0',
- sizeof (struct re_backref_cache_entry) * mctx->abkref_ents);
+ sizeof (struct re_backref_cache_entry) * mctx->abkref_ents);
mctx->abkref_ents *= 2;
}
mctx->bkref_ents[mctx->nbkref_ents].node = node;