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Diffstat (limited to 'posix/regcomp.c')
-rw-r--r--posix/regcomp.c112
1 files changed, 91 insertions, 21 deletions
diff --git a/posix/regcomp.c b/posix/regcomp.c
index 6fb1844599..52f1fa23e1 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -607,6 +607,9 @@ free_dfa_content (re_dfa_t *dfa)
}
re_free (dfa->state_table);
re_free (dfa->word_char);
+#ifdef RE_ENABLE_I18N
+ re_free (dfa->sb_char);
+#endif
#ifdef DEBUG
re_free (dfa->re_str);
#endif
@@ -831,7 +834,7 @@ init_dfa (dfa, pat_len)
dfa->subexps_alloc = 1;
dfa->subexps = re_malloc (re_subexp_t, dfa->subexps_alloc);
- dfa->word_char = NULL;
+ /* dfa->word_char = NULL; */
dfa->mb_cur_max = MB_CUR_MAX;
#ifdef _LIBC
@@ -841,6 +844,25 @@ init_dfa (dfa, pat_len)
dfa->map_notascii = (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_TO_NONASCII)
!= 0);
#endif
+#ifdef RE_ENABLE_I18N
+ if (dfa->mb_cur_max > 1)
+ {
+ int i, j, ch;
+
+ dfa->sb_char = (re_bitset_ptr_t) calloc (sizeof (bitset), 1);
+ if (BE (dfa->sb_char == NULL, 0))
+ return REG_ESPACE;
+#ifdef _LIBC
+ if (dfa->is_utf8)
+ memset (dfa->sb_char, 255, sizeof (unsigned int) * BITSET_UINTS / 2);
+ else
+#endif
+ for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
+ for (j = 0; j < UINT_BITS; ++j, ++ch)
+ if (btowc (ch) != WEOF)
+ dfa->sb_char[i] |= 1 << j;
+ }
+#endif
if (BE (dfa->nodes == NULL || dfa->state_table == NULL
|| dfa->subexps == NULL, 0))
@@ -1311,6 +1333,8 @@ duplicate_node_closure (dfa, top_org_node, top_clone_node, root_node,
if (BE (err != REG_NOERROR, 0))
return err;
dfa->nexts[clone_node] = dfa->nexts[org_node];
+ if (clone_dest == -1)
+ break;
ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
if (BE (ret < 0, 0))
return REG_ESPACE;
@@ -1348,6 +1372,8 @@ duplicate_node_closure (dfa, top_org_node, top_clone_node, root_node,
err = duplicate_node (&clone_dest, dfa, org_dest, constraint);
if (BE (err != REG_NOERROR, 0))
return err;
+ if (clone_dest == -1)
+ break;
ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
if (BE (ret < 0, 0))
return REG_ESPACE;
@@ -1366,13 +1392,16 @@ duplicate_node_closure (dfa, top_org_node, top_clone_node, root_node,
err = duplicate_node (&clone_dest, dfa, org_dest, constraint);
if (BE (err != REG_NOERROR, 0))
return err;
- ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
- if (BE (ret < 0, 0))
- return REG_ESPACE;
- err = duplicate_node_closure (dfa, org_dest, clone_dest,
- root_node, constraint);
- if (BE (err != REG_NOERROR, 0))
- return err;
+ if (clone_dest != -1)
+ {
+ ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
+ if (BE (ret < 0, 0))
+ return REG_ESPACE;
+ err = duplicate_node_closure (dfa, org_dest, clone_dest,
+ root_node, constraint);
+ if (BE (err != REG_NOERROR, 0))
+ return err;
+ }
}
else
{
@@ -1387,6 +1416,8 @@ duplicate_node_closure (dfa, top_org_node, top_clone_node, root_node,
err = duplicate_node (&clone_dest, dfa, org_dest, constraint);
if (BE (err != REG_NOERROR, 0))
return err;
+ if (clone_dest == -1)
+ break;
ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
if (BE (ret < 0, 0))
return REG_ESPACE;
@@ -1426,7 +1457,21 @@ duplicate_node (new_idx, dfa, org_idx, constraint)
int *new_idx, org_idx;
unsigned int constraint;
{
- int dup_idx = re_dfa_add_node (dfa, dfa->nodes[org_idx], 1);
+ int dup_idx;
+
+ if (dfa->nodes[org_idx].type == CHARACTER
+ && (((constraint & NEXT_WORD_CONSTRAINT)
+ && !dfa->nodes[org_idx].word_char)
+ || ((constraint & NEXT_NOTWORD_CONSTRAINT)
+ && dfa->nodes[org_idx].word_char)))
+ {
+ /* \<!, \>W etc. can never match. Don't duplicate them, instead
+ tell the caller they shouldn't be added to edests. */
+ *new_idx = -1;
+ return REG_NOERROR;
+ }
+
+ dup_idx = re_dfa_add_node (dfa, dfa->nodes[org_idx], 1);
if (BE (dup_idx == -1, 0))
return REG_ESPACE;
dfa->nodes[dup_idx].constraint = constraint;
@@ -1614,6 +1659,7 @@ peek_token (token, input, syntax)
c = re_string_peek_byte (input, 0);
token->opr.c = c;
+ token->word_char = 0;
#ifdef RE_ENABLE_I18N
token->mb_partial = 0;
if (input->mb_cur_max > 1 &&
@@ -1636,6 +1682,17 @@ peek_token (token, input, syntax)
c2 = re_string_peek_byte_case (input, 1);
token->opr.c = c2;
token->type = CHARACTER;
+#ifdef RE_ENABLE_I18N
+ if (input->mb_cur_max > 1)
+ {
+ wint_t wc = re_string_wchar_at (input,
+ re_string_cur_idx (input) + 1);
+ token->word_char = IS_WIDE_WORD_CHAR (wc) != 0;
+ }
+ else
+#endif
+ token->word_char = IS_WORD_CHAR (c2) != 0;
+
switch (c2)
{
case '|':
@@ -1739,6 +1796,16 @@ peek_token (token, input, syntax)
}
token->type = CHARACTER;
+#ifdef RE_ENABLE_I18N
+ if (input->mb_cur_max > 1)
+ {
+ wint_t wc = re_string_wchar_at (input, re_string_cur_idx (input));
+ token->word_char = IS_WIDE_WORD_CHAR (wc) != 0;
+ }
+ else
+#endif
+ token->word_char = IS_WORD_CHAR (token->opr.c);
+
switch (c)
{
case '\n':
@@ -2140,6 +2207,8 @@ parse_expression (regexp, preg, token, syntax, nest, err)
/* Then we can these characters as normal characters. */
token->type = CHARACTER;
+ /* mb_partial and word_char bits should be initialized already
+ by peek_token. */
tree = re_dfa_add_tree_node (dfa, NULL, NULL, token);
if (BE (tree == NULL, 0))
{
@@ -2475,6 +2544,8 @@ parse_dup_op (dup_elem, regexp, dfa, token, syntax, err)
re_string_set_index (regexp, start_idx);
*token = start_token;
token->type = CHARACTER;
+ /* mb_partial and word_char bits should be already initialized by
+ peek_token. */
return dup_elem;
}
@@ -2952,7 +3023,6 @@ parse_bracket_exp (regexp, dfa, token, syntax, err)
if (token->type == OP_NON_MATCH_LIST)
{
#ifdef RE_ENABLE_I18N
- int i;
mbcset->non_match = 1;
#else /* not RE_ENABLE_I18N */
non_match = 1;
@@ -2966,12 +3036,6 @@ parse_bracket_exp (regexp, dfa, token, syntax, err)
*err = REG_BADPAT;
goto parse_bracket_exp_free_return;
}
-#ifdef RE_ENABLE_I18N
- if (dfa->mb_cur_max > 1)
- for (i = 0; i < SBC_MAX; ++i)
- if (__btowc (i) == WEOF)
- bitset_set (sbcset, i);
-#endif /* RE_ENABLE_I18N */
}
/* We treat the first ']' as a normal character. */
@@ -3126,6 +3190,11 @@ parse_bracket_exp (regexp, dfa, token, syntax, err)
if (non_match)
#endif /* not RE_ENABLE_I18N */
bitset_not (sbcset);
+#ifdef RE_ENABLE_I18N
+ /* Ensure only single byte characters are set. */
+ if (dfa->mb_cur_max > 1)
+ bitset_mask (sbcset, dfa->sb_char);
+#endif /* RE_ENABLE_I18N */
/* Build a tree for simple bracket. */
br_token.type = SIMPLE_BRACKET;
@@ -3493,16 +3562,11 @@ build_charclass_op (dfa, trans, class_name, extra, not, err)
if (not)
{
#ifdef RE_ENABLE_I18N
- int i;
/*
if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
bitset_set(cset->sbcset, '\0');
*/
mbcset->non_match = 1;
- if (dfa->mb_cur_max > 1)
- for (i = 0; i < SBC_MAX; ++i)
- if (__btowc (i) == WEOF)
- bitset_set (sbcset, i);
#else /* not RE_ENABLE_I18N */
non_match = 1;
#endif /* not RE_ENABLE_I18N */
@@ -3536,6 +3600,12 @@ build_charclass_op (dfa, trans, class_name, extra, not, err)
#endif /* not RE_ENABLE_I18N */
bitset_not (sbcset);
+#ifdef RE_ENABLE_I18N
+ /* Ensure only single byte characters are set. */
+ if (dfa->mb_cur_max > 1)
+ bitset_mask (sbcset, dfa->sb_char);
+#endif
+
/* Build a tree for simple bracket. */
br_token.type = SIMPLE_BRACKET;
br_token.opr.sbcset = sbcset;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 23:55:44 +0000