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diff --git a/gl/regcomp.c b/gl/regcomp.c
index 8df6bb8092e33aefee5fe036e5beb26f05c1f29d..b114b4d1400f480466abbc8f2532f8c2d63da8e6 100644 (file)
--- a/gl/regcomp.c
+++ b/gl/regcomp.c
/* Extended regular expression matching and search library.
- Copyright (C) 2002,2003,2004,2005,2006 Free Software Foundation, Inc.
+ Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
&& dfa->nodes[node].mb_partial)
*p++ = dfa->nodes[node].opr.c;
memset (&state, '\0', sizeof (state));
- if (mbrtowc (&wc, (const char *) buf, p - buf,
- &state) == p - buf
+ if (__mbrtowc (&wc, (const char *) buf, p - buf,
+ &state) == p - buf
&& (__wcrtomb ((char *) buf, towlower (wc), &state)
!= (size_t) -1))
re_set_fastmap (fastmap, false, buf[0]);
#ifdef RE_ENABLE_I18N
else if (type == COMPLEX_BRACKET)
{
- Idx i;
re_charset_t *cset = dfa->nodes[node].opr.mbcset;
- if (cset->non_match || cset->ncoll_syms || cset->nequiv_classes
- || cset->nranges || cset->nchar_classes)
- {
+ Idx i;
+
# ifdef _LIBC
- if (_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES) != 0)
+ /* See if we have to try all bytes which start multiple collation
+ elements.
+ e.g. In da_DK, we want to catch 'a' since "aa" is a valid
+ collation element, and don't catch 'b' since 'b' is
+ the only collation element which starts from 'b' (and
+ it is caught by SIMPLE_BRACKET). */
+ if (_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES) != 0
+ && (cset->ncoll_syms || cset->nranges))
{
- /* In this case we want to catch the bytes which are
- the first byte of any collation elements.
- e.g. In da_DK, we want to catch 'a' since "aa"
- is a valid collation element, and don't catch
- 'b' since 'b' is the only collation element
- which starts from 'b'. */
const int32_t *table = (const int32_t *)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
for (i = 0; i < SBC_MAX; ++i)
if (table[i] < 0)
re_set_fastmap (fastmap, icase, i);
}
-# else
- if (dfa->mb_cur_max > 1)
- for (i = 0; i < SBC_MAX; ++i)
- if (__btowc (i) == WEOF)
- re_set_fastmap (fastmap, icase, i);
-# endif /* not _LIBC */
+# endif /* _LIBC */
+
+ /* See if we have to start the match at all multibyte characters,
+ i.e. where we would not find an invalid sequence. This only
+ applies to multibyte character sets; for single byte character
+ sets, the SIMPLE_BRACKET again suffices. */
+ if (dfa->mb_cur_max > 1
+ && (cset->nchar_classes || cset->non_match
+# ifdef _LIBC
+ || cset->nequiv_classes
+# endif /* _LIBC */
+ ))
+ {
+ unsigned char c = 0;
+ do
+ {
+ mbstate_t mbs;
+ memset (&mbs, 0, sizeof (mbs));
+ if (__mbrtowc (NULL, (char *) &c, 1, &mbs) == (size_t) -2)
+ re_set_fastmap (fastmap, false, (int) c);
+ }
+ while (++c != 0);
}
- for (i = 0; i < cset->nmbchars; ++i)
+
+ else
{
- char buf[256];
- mbstate_t state;
- memset (&state, '\0', sizeof (state));
- if (__wcrtomb (buf, cset->mbchars[i], &state) != (size_t) -1)
- re_set_fastmap (fastmap, icase, *(unsigned char *) buf);
- if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
+ /* ... Else catch all bytes which can start the mbchars. */
+ for (i = 0; i < cset->nmbchars; ++i)
{
- if (__wcrtomb (buf, towlower (cset->mbchars[i]), &state)
- != (size_t) -1)
- re_set_fastmap (fastmap, false, *(unsigned char *) buf);
+ char buf[256];
+ mbstate_t state;
+ memset (&state, '\0', sizeof (state));
+ if (__wcrtomb (buf, cset->mbchars[i], &state) != (size_t) -1)
+ re_set_fastmap (fastmap, icase, *(unsigned char *) buf);
+ if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
+ {
+ if (__wcrtomb (buf, towlower (cset->mbchars[i]), &state)
+ != (size_t) -1)
+ re_set_fastmap (fastmap, false, *(unsigned char *) buf);
+ }
}
}
}
int
regcomp (preg, pattern, cflags)
- regex_t *__restrict preg;
- const char *__restrict pattern;
+ regex_t *_Restrict_ preg;
+ const char *_Restrict_ pattern;
int cflags;
{
reg_errcode_t ret;
size_t
regerror (errcode, preg, errbuf, errbuf_size)
int errcode;
- const regex_t *__restrict preg;
- char *__restrict errbuf;
+ const regex_t *_Restrict_ preg;
+ char *_Restrict_ errbuf;
size_t errbuf_size;
#else /* size_t might promote */
size_t
-regerror (int errcode, const regex_t *__restrict preg,
- char *__restrict errbuf, size_t errbuf_size)
+regerror (int errcode, const regex_t *_Restrict_ preg,
+ char *_Restrict_ errbuf, size_t errbuf_size)
#endif
{
const char *msg;
if (BE (errbuf_size != 0, 1))
{
+ size_t cpy_size = msg_size;
if (BE (msg_size > errbuf_size, 0))
{
-#if defined HAVE_MEMPCPY || defined _LIBC
- *((char *) __mempcpy (errbuf, msg, errbuf_size - 1)) = '\0';
-#else
- memcpy (errbuf, msg, errbuf_size - 1);
- errbuf[errbuf_size - 1] = 0;
-#endif
+ cpy_size = errbuf_size - 1;
+ errbuf[cpy_size] = '\0';
}
- else
- memcpy (errbuf, msg, msg_size);
+ memcpy (errbuf, msg, cpy_size);
}
return msg_size;
__libc_lock_init (dfa->lock);
err = re_string_construct (®exp, pattern, length, preg->translate,
- syntax & RE_ICASE, dfa);
+ (syntax & RE_ICASE) != 0, dfa);
if (BE (err != REG_NOERROR, 0))
{
re_compile_internal_free_return:
init_dfa (re_dfa_t *dfa, size_t pat_len)
{
__re_size_t table_size;
-#ifndef _LIBC
- char *codeset_name;
-#endif
#ifdef RE_ENABLE_I18N
size_t max_i18n_object_size = MAX (sizeof (wchar_t), sizeof (wctype_t));
#else
dfa->map_notascii = (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_TO_NONASCII)
!= 0);
#else
-# ifdef HAVE_LANGINFO_CODESET
- codeset_name = nl_langinfo (CODESET);
-# else
- codeset_name = getenv ("LC_ALL");
- if (codeset_name == NULL || codeset_name[0] == '\0')
- codeset_name = getenv ("LC_CTYPE");
- if (codeset_name == NULL || codeset_name[0] == '\0')
- codeset_name = getenv ("LANG");
- if (codeset_name == NULL)
- codeset_name = "";
- else if (strchr (codeset_name, '.') != NULL)
- codeset_name = strchr (codeset_name, '.') + 1;
-# endif
-
- if (strcasecmp (codeset_name, "UTF-8") == 0
- || strcasecmp (codeset_name, "UTF8") == 0)
+ if (strcmp (locale_charset (), "UTF-8") == 0)
dfa->is_utf8 = 1;
/* We check exhaustively in the loop below if this charset is a
mb_chars = true;
break;
case ANCHOR:
- switch (dfa->nodes[node].opr.idx)
+ switch (dfa->nodes[node].opr.ctx_type)
{
case LINE_FIRST:
case LINE_LAST:
case BUF_LAST:
break;
default:
- /* Word anchors etc. cannot be handled. */
+ /* Word anchors etc. cannot be handled. It's okay to test
+ opr.ctx_type since constraints (for all DFA nodes) are
+ created by ORing one or more opr.ctx_type values. */
return;
}
break;
node->node_idx = re_dfa_add_node (dfa, node->token);
if (BE (node->node_idx == REG_MISSING, 0))
return REG_ESPACE;
+ if (node->token.type == ANCHOR)
+ dfa->nodes[node->node_idx].constraint = node->token.opr.ctx_type;
}
return REG_NOERROR;
}
@@ -1495,21 +1498,18 @@ duplicate_node_closure (re_dfa_t *dfa, Idx top_org_node, Idx top_clone_node,
destination. */
org_dest = dfa->edests[org_node].elems[0];
re_node_set_empty (dfa->edests + clone_node);
- if (dfa->nodes[org_node].type == ANCHOR)
+ clone_dest = search_duplicated_node (dfa, org_dest, constraint);
+ /* If the node is root_node itself, it means the epsilon closure
+ has a loop. Then tie it to the destination of the root_node. */
+ if (org_node == root_node && clone_node != org_node)
{
- /* In case of the node has another constraint, append it. */
- if (org_node == root_node && clone_node != org_node)
- {
- /* ...but if the node is root_node itself, it means the
- epsilon closure have a loop, then tie it to the
- destination of the root_node. */
- ok = re_node_set_insert (dfa->edests + clone_node, org_dest);
- if (BE (! ok, 0))
- return REG_ESPACE;
- break;
- }
- constraint |= dfa->nodes[org_node].opr.ctx_type;
+ ok = re_node_set_insert (dfa->edests + clone_node, org_dest);
+ if (BE (! ok, 0))
+ return REG_ESPACE;
+ break;
}
+ /* In case the node has another constraint, append it. */
+ constraint |= dfa->nodes[org_node].constraint;
clone_dest = duplicate_node (dfa, org_dest, constraint);
if (BE (clone_dest == REG_MISSING, 0))
return REG_ESPACE;
clone_dest = search_duplicated_node (dfa, org_dest, constraint);
if (clone_dest == REG_MISSING)
{
- /* There are no such a duplicated node, create a new one. */
+ /* There is no such duplicated node, create a new one. */
reg_errcode_t err;
clone_dest = duplicate_node (dfa, org_dest, constraint);
if (BE (clone_dest == REG_MISSING, 0))
}
else
{
- /* There are a duplicated node which satisfy the constraint,
+ /* There is a duplicated node which satisfy the constraint,
use it to avoid infinite loop. */
ok = re_node_set_insert (dfa->edests + clone_node, clone_dest);
if (BE (! ok, 0))
if (BE (dup_idx != REG_MISSING, 1))
{
dfa->nodes[dup_idx].constraint = constraint;
- if (dfa->nodes[org_idx].type == ANCHOR)
- dfa->nodes[dup_idx].constraint |= dfa->nodes[org_idx].opr.ctx_type;
+ dfa->nodes[dup_idx].constraint |= dfa->nodes[org_idx].constraint;
dfa->nodes[dup_idx].duplicated = 1;
/* Store the index of the original node. */
calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, Idx node, bool root)
{
reg_errcode_t err;
- unsigned int constraint;
Idx i;
bool incomplete;
bool ok;
@@ -1688,15 +1686,14 @@ calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, Idx node, bool root)
We reference this value to avoid infinite loop. */
dfa->eclosures[node].nelem = REG_MISSING;
- constraint = ((dfa->nodes[node].type == ANCHOR)
- ? dfa->nodes[node].opr.ctx_type : 0);
- /* If the current node has constraints, duplicate all nodes.
- Since they must inherit the constraints. */
- if (constraint
+ /* If the current node has constraints, duplicate all nodes
+ since they must inherit the constraints. */
+ if (dfa->nodes[node].constraint
&& dfa->edests[node].nelem
&& !dfa->nodes[dfa->edests[node].elems[0]].duplicated)
{
- err = duplicate_node_closure (dfa, node, node, node, constraint);
+ err = duplicate_node_closure (dfa, node, node, node,
+ dfa->nodes[node].constraint);
if (BE (err != REG_NOERROR, 0))
return err;
}
#endif /* not RE_ENABLE_I18N */
non_match = true;
if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
- bitset_set (sbcset, '\0');
+ bitset_set (sbcset, '\n');
re_string_skip_bytes (regexp, token_len); /* Skip a token. */
token_len = peek_token_bracket (token, regexp, syntax);
if (BE (token->type == END_OF_RE, 0))
if (non_match)
{
#ifdef RE_ENABLE_I18N
- /*
- if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
- bitset_set(cset->sbcset, '\0');
- */
mbcset->non_match = 1;
#endif /* not RE_ENABLE_I18N */
}