/* Definitions for data structures and routines for the regular
expression library.
- Copyright (C) 1985,1989-93,1995-98,2000,2001,2002,2003,2005
- Free Software Foundation, Inc.
+ Copyright (C) 1985, 1989-1993, 1995-1998, 2000-2003, 2005-2013 Free Software
+ Foundation, Inc.
This file is part of the GNU C Library.
- 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)
- any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#ifndef _REGEX_H
#define _REGEX_H 1
extern "C" {
#endif
-/* Define _REGEX_SOURCE to get definitions that are incompatible with
- POSIX. */
-#if (!defined _REGEX_SOURCE \
- && (defined _GNU_SOURCE \
- || (!defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE \
- && !defined _XOPEN_SOURCE)))
-# define _REGEX_SOURCE 1
+/* Define __USE_GNU to declare GNU extensions that violate the
+ POSIX name space rules. */
+#ifdef _GNU_SOURCE
+# define __USE_GNU 1
#endif
-#if defined _REGEX_SOURCE && defined VMS
-/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it
- should be there. */
-# include <stddef.h>
+#ifdef _REGEX_LARGE_OFFSETS
+
+/* Use types and values that are wide enough to represent signed and
+ unsigned byte offsets in memory. This currently works only when
+ the regex code is used outside of the GNU C library; it is not yet
+ supported within glibc itself, and glibc users should not define
+ _REGEX_LARGE_OFFSETS. */
+
+/* The type of nonnegative object indexes. Traditionally, GNU regex
+ uses 'int' for these. Code that uses __re_idx_t should work
+ regardless of whether the type is signed. */
+typedef size_t __re_idx_t;
+
+/* The type of object sizes. */
+typedef size_t __re_size_t;
+
+/* The type of object sizes, in places where the traditional code
+ uses unsigned long int. */
+typedef size_t __re_long_size_t;
+
+#else
+
+/* The traditional GNU regex implementation mishandles strings longer
+ than INT_MAX. */
+typedef int __re_idx_t;
+typedef unsigned int __re_size_t;
+typedef unsigned long int __re_long_size_t;
+
#endif
/* The following two types have to be signed and unsigned integer type
add or remove a bit, only one other definition need change. */
typedef unsigned long int reg_syntax_t;
+#ifdef __USE_GNU
/* If this bit is not set, then \ inside a bracket expression is literal.
If set, then such a \ quotes the following character. */
-#define REG_BACKSLASH_ESCAPE_IN_LISTS 1ul
+# define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1)
/* If this bit is not set, then + and ? are operators, and \+ and \? are
literals.
If set, then \+ and \? are operators and + and ? are literals. */
-#define REG_BK_PLUS_QM (1ul << 1)
+# define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
/* If this bit is set, then character classes are supported. They are:
[:alpha:], [:upper:], [:lower:], [:digit:], [:alnum:], [:xdigit:],
[:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].
If not set, then character classes are not supported. */
-#define REG_CHAR_CLASSES (1ul << 2)
+# define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)
/* If this bit is set, then ^ and $ are always anchors (outside bracket
expressions, of course).
If this bit is not set, then it depends:
- ^ is an anchor if it is at the beginning of a regular
- expression or after an open-group or an alternation operator;
- $ is an anchor if it is at the end of a regular expression, or
- before a close-group or an alternation operator.
+ ^ is an anchor if it is at the beginning of a regular
+ expression or after an open-group or an alternation operator;
+ $ is an anchor if it is at the end of a regular expression, or
+ before a close-group or an alternation operator.
- This bit could be (re)combined with REG_CONTEXT_INDEP_OPS, because
+ This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because
POSIX draft 11.2 says that * etc. in leading positions is undefined.
We already implemented a previous draft which made those constructs
invalid, though, so we haven't changed the code back. */
-#define REG_CONTEXT_INDEP_ANCHORS (1ul << 3)
+# define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)
/* If this bit is set, then special characters are always special
regardless of where they are in the pattern.
some contexts; otherwise they are ordinary. Specifically,
* + ? and intervals are only special when not after the beginning,
open-group, or alternation operator. */
-#define REG_CONTEXT_INDEP_OPS (1ul << 4)
+# define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)
/* If this bit is set, then *, +, ?, and { cannot be first in an re or
immediately after an alternation or begin-group operator. */
-#define REG_CONTEXT_INVALID_OPS (1ul << 5)
+# define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)
/* If this bit is set, then . matches newline.
If not set, then it doesn't. */
-#define REG_DOT_NEWLINE (1ul << 6)
+# define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)
/* If this bit is set, then . doesn't match NUL.
If not set, then it does. */
-#define REG_DOT_NOT_NULL (1ul << 7)
+# define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)
/* If this bit is set, nonmatching lists [^...] do not match newline.
If not set, they do. */
-#define REG_HAT_LISTS_NOT_NEWLINE (1ul << 8)
+# define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
/* If this bit is set, either \{...\} or {...} defines an
- interval, depending on REG_NO_BK_BRACES.
+ interval, depending on RE_NO_BK_BRACES.
If not set, \{, \}, {, and } are literals. */
-#define REG_INTERVALS (1ul << 9)
+# define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)
/* If this bit is set, +, ? and | aren't recognized as operators.
If not set, they are. */
-#define REG_LIMITED_OPS (1ul << 10)
+# define RE_LIMITED_OPS (RE_INTERVALS << 1)
/* If this bit is set, newline is an alternation operator.
If not set, newline is literal. */
-#define REG_NEWLINE_ALT (1ul << 11)
+# define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
-/* If this bit is set, then `{...}' defines an interval, and \{ and \}
+/* If this bit is set, then '{...}' defines an interval, and \{ and \}
are literals.
- If not set, then `\{...\}' defines an interval. */
-#define REG_NO_BK_BRACES (1ul << 12)
+ If not set, then '\{...\}' defines an interval. */
+# define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
/* If this bit is set, (...) defines a group, and \( and \) are literals.
If not set, \(...\) defines a group, and ( and ) are literals. */
-#define REG_NO_BK_PARENS (1ul << 13)
+# define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)
/* If this bit is set, then \<digit> matches <digit>.
If not set, then \<digit> is a back-reference. */
-#define REG_NO_BK_REFS (1ul << 14)
+# define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)
/* If this bit is set, then | is an alternation operator, and \| is literal.
If not set, then \| is an alternation operator, and | is literal. */
-#define REG_NO_BK_VBAR (1ul << 15)
+# define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)
/* If this bit is set, then an ending range point collating higher
than the starting range point, as in [z-a], is invalid.
- If not set, the containing range is empty and does not match any string. */
-#define REG_NO_EMPTY_RANGES (1ul << 16)
+ If not set, then when ending range point collates higher than the
+ starting range point, the range is ignored. */
+# define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1)
/* If this bit is set, then an unmatched ) is ordinary.
If not set, then an unmatched ) is invalid. */
-#define REG_UNMATCHED_RIGHT_PAREN_ORD (1ul << 17)
+# define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
/* If this bit is set, succeed as soon as we match the whole pattern,
without further backtracking. */
-#define REG_NO_POSIX_BACKTRACKING (1ul << 18)
+# define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)
/* If this bit is set, do not process the GNU regex operators.
If not set, then the GNU regex operators are recognized. */
-#define REG_NO_GNU_OPS (1ul << 19)
+# define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1)
/* If this bit is set, turn on internal regex debugging.
If not set, and debugging was on, turn it off.
We define this bit always, so that all that's needed to turn on
debugging is to recompile regex.c; the calling code can always have
this bit set, and it won't affect anything in the normal case. */
-#define REG_DEBUG (1ul << 20)
+# define RE_DEBUG (RE_NO_GNU_OPS << 1)
/* If this bit is set, a syntactically invalid interval is treated as
a string of ordinary characters. For example, the ERE 'a{1' is
treated as 'a\{1'. */
-#define REG_INVALID_INTERVAL_ORD (1ul << 21)
+# define RE_INVALID_INTERVAL_ORD (RE_DEBUG << 1)
/* If this bit is set, then ignore case when matching.
If not set, then case is significant. */
-#define REG_IGNORE_CASE (1ul << 22)
+# define RE_ICASE (RE_INVALID_INTERVAL_ORD << 1)
-/* This bit is used internally like REG_CONTEXT_INDEP_ANCHORS but only
+/* This bit is used internally like RE_CONTEXT_INDEP_ANCHORS but only
for ^, because it is difficult to scan the regex backwards to find
whether ^ should be special. */
-#define REG_CARET_ANCHORS_HERE (1ul << 23)
+# define RE_CARET_ANCHORS_HERE (RE_ICASE << 1)
-/* If this bit is set, then \{ cannot be first in an bre or
- immediately after an alternation or begin-group operator. */
-#define REG_CONTEXT_INVALID_DUP (1ul << 24)
+/* If this bit is set, then \{ cannot be first in a regex or
+ immediately after an alternation, open-group or \} operator. */
+# define RE_CONTEXT_INVALID_DUP (RE_CARET_ANCHORS_HERE << 1)
/* If this bit is set, then no_sub will be set to 1 during
re_compile_pattern. */
-#define REG_NO_SUB (1ul << 25)
+# define RE_NO_SUB (RE_CONTEXT_INVALID_DUP << 1)
+#endif
/* This global variable defines the particular regexp syntax to use (for
some interfaces). When a regexp is compiled, the syntax used is
already-compiled regexps. */
extern reg_syntax_t re_syntax_options;
\f
+#ifdef __USE_GNU
/* Define combinations of the above bits for the standard possibilities.
(The [[[ comments delimit what gets put into the Texinfo file, so
don't delete them!) */
/* [[[begin syntaxes]]] */
-#define REG_SYNTAX_EMACS 0
-
-#define REG_SYNTAX_AWK \
- (REG_BACKSLASH_ESCAPE_IN_LISTS | REG_DOT_NOT_NULL \
- | REG_NO_BK_PARENS | REG_NO_BK_REFS \
- | REG_NO_BK_VBAR | REG_NO_EMPTY_RANGES \
- | REG_DOT_NEWLINE | REG_CONTEXT_INDEP_ANCHORS \
- | REG_UNMATCHED_RIGHT_PAREN_ORD | REG_NO_GNU_OPS)
-
-#define REG_SYNTAX_GNU_AWK \
- ((REG_SYNTAX_POSIX_EXTENDED | REG_BACKSLASH_ESCAPE_IN_LISTS \
- | REG_DEBUG) \
- & ~(REG_DOT_NOT_NULL | REG_INTERVALS | REG_CONTEXT_INDEP_OPS \
- | REG_CONTEXT_INVALID_OPS ))
-
-#define REG_SYNTAX_POSIX_AWK \
- (REG_SYNTAX_POSIX_EXTENDED | REG_BACKSLASH_ESCAPE_IN_LISTS \
- | REG_INTERVALS | REG_NO_GNU_OPS)
-
-#define REG_SYNTAX_GREP \
- (REG_BK_PLUS_QM | REG_CHAR_CLASSES \
- | REG_HAT_LISTS_NOT_NEWLINE | REG_INTERVALS \
- | REG_NEWLINE_ALT)
-
-#define REG_SYNTAX_EGREP \
- (REG_CHAR_CLASSES | REG_CONTEXT_INDEP_ANCHORS \
- | REG_CONTEXT_INDEP_OPS | REG_HAT_LISTS_NOT_NEWLINE \
- | REG_NEWLINE_ALT | REG_NO_BK_PARENS \
- | REG_NO_BK_VBAR)
-
-#define REG_SYNTAX_POSIX_EGREP \
- (REG_SYNTAX_EGREP | REG_INTERVALS | REG_NO_BK_BRACES \
- | REG_INVALID_INTERVAL_ORD)
+# define RE_SYNTAX_EMACS 0
+
+# define RE_SYNTAX_AWK \
+ (RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL \
+ | RE_NO_BK_PARENS | RE_NO_BK_REFS \
+ | RE_NO_BK_VBAR | RE_NO_EMPTY_RANGES \
+ | RE_DOT_NEWLINE | RE_CONTEXT_INDEP_ANCHORS \
+ | RE_CHAR_CLASSES \
+ | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
+
+# define RE_SYNTAX_GNU_AWK \
+ ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \
+ | RE_INVALID_INTERVAL_ORD) \
+ & ~(RE_DOT_NOT_NULL | RE_CONTEXT_INDEP_OPS \
+ | RE_CONTEXT_INVALID_OPS ))
+
+# define RE_SYNTAX_POSIX_AWK \
+ (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \
+ | RE_INTERVALS | RE_NO_GNU_OPS \
+ | RE_INVALID_INTERVAL_ORD)
+
+# define RE_SYNTAX_GREP \
+ (RE_BK_PLUS_QM | RE_CHAR_CLASSES \
+ | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS \
+ | RE_NEWLINE_ALT)
+
+# define RE_SYNTAX_EGREP \
+ (RE_CHAR_CLASSES | RE_CONTEXT_INDEP_ANCHORS \
+ | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE \
+ | RE_NEWLINE_ALT | RE_NO_BK_PARENS \
+ | RE_NO_BK_VBAR)
+
+# define RE_SYNTAX_POSIX_EGREP \
+ (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES \
+ | RE_INVALID_INTERVAL_ORD)
/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff. */
-#define REG_SYNTAX_ED REG_SYNTAX_POSIX_BASIC
+# define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
-#define REG_SYNTAX_SED REG_SYNTAX_POSIX_BASIC
+# define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
/* Syntax bits common to both basic and extended POSIX regex syntax. */
-#define _REG_SYNTAX_POSIX_COMMON \
- (REG_CHAR_CLASSES | REG_DOT_NEWLINE | REG_DOT_NOT_NULL \
- | REG_INTERVALS | REG_NO_EMPTY_RANGES)
+# define _RE_SYNTAX_POSIX_COMMON \
+ (RE_CHAR_CLASSES | RE_DOT_NEWLINE | RE_DOT_NOT_NULL \
+ | RE_INTERVALS | RE_NO_EMPTY_RANGES)
-#define REG_SYNTAX_POSIX_BASIC \
- (_REG_SYNTAX_POSIX_COMMON | REG_BK_PLUS_QM | REG_CONTEXT_INVALID_DUP)
+# define RE_SYNTAX_POSIX_BASIC \
+ (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM | RE_CONTEXT_INVALID_DUP)
-/* Differs from ..._POSIX_BASIC only in that REG_BK_PLUS_QM becomes
- REG_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this
+/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
+ RE_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this
isn't minimal, since other operators, such as \`, aren't disabled. */
-#define REG_SYNTAX_POSIX_MINIMAL_BASIC \
- (_REG_SYNTAX_POSIX_COMMON | REG_LIMITED_OPS)
-
-#define REG_SYNTAX_POSIX_EXTENDED \
- (_REG_SYNTAX_POSIX_COMMON | REG_CONTEXT_INDEP_ANCHORS \
- | REG_CONTEXT_INDEP_OPS | REG_NO_BK_BRACES \
- | REG_NO_BK_PARENS | REG_NO_BK_VBAR \
- | REG_CONTEXT_INVALID_OPS | REG_UNMATCHED_RIGHT_PAREN_ORD)
-
-/* Differs from ..._POSIX_EXTENDED in that REG_CONTEXT_INDEP_OPS is
- removed and REG_NO_BK_REFS is added. */
-#define REG_SYNTAX_POSIX_MINIMAL_EXTENDED \
- (_REG_SYNTAX_POSIX_COMMON | REG_CONTEXT_INDEP_ANCHORS \
- | REG_CONTEXT_INVALID_OPS | REG_NO_BK_BRACES \
- | REG_NO_BK_PARENS | REG_NO_BK_REFS \
- | REG_NO_BK_VBAR | REG_UNMATCHED_RIGHT_PAREN_ORD)
+# define RE_SYNTAX_POSIX_MINIMAL_BASIC \
+ (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)
+
+# define RE_SYNTAX_POSIX_EXTENDED \
+ (_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \
+ | RE_CONTEXT_INDEP_OPS | RE_NO_BK_BRACES \
+ | RE_NO_BK_PARENS | RE_NO_BK_VBAR \
+ | RE_CONTEXT_INVALID_OPS | RE_UNMATCHED_RIGHT_PAREN_ORD)
+
+/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is
+ removed and RE_NO_BK_REFS is added. */
+# define RE_SYNTAX_POSIX_MINIMAL_EXTENDED \
+ (_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \
+ | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES \
+ | RE_NO_BK_PARENS | RE_NO_BK_REFS \
+ | RE_NO_BK_VBAR | RE_UNMATCHED_RIGHT_PAREN_ORD)
/* [[[end syntaxes]]] */
-\f
-/* Maximum number of duplicates an interval can allow. This is
- distinct from RE_DUP_MAX, to conform to POSIX name space rules and
- to avoid collisions with <limits.h>. */
-#define REG_DUP_MAX 32767
+/* Maximum number of duplicates an interval can allow. POSIX-conforming
+ systems might define this in <limits.h>, but we want our
+ value, so remove any previous define. */
+# ifdef _REGEX_INCLUDE_LIMITS_H
+# include <limits.h>
+# endif
+# ifdef RE_DUP_MAX
+# undef RE_DUP_MAX
+# endif
+
+/* RE_DUP_MAX is 2**15 - 1 because an earlier implementation stored
+ the counter as a 2-byte signed integer. This is no longer true, so
+ RE_DUP_MAX could be increased to (INT_MAX / 10 - 1), or to
+ ((SIZE_MAX - 9) / 10) if _REGEX_LARGE_OFFSETS is defined.
+ However, there would be a huge performance problem if someone
+ actually used a pattern like a\{214748363\}, so RE_DUP_MAX retains
+ its historical value. */
+# define RE_DUP_MAX (0x7fff)
+#endif
-/* POSIX `cflags' bits (i.e., information for `regcomp'). */
+
+/* POSIX 'cflags' bits (i.e., information for 'regcomp'). */
/* If this bit is set, then use extended regular expression syntax.
If not set, then use basic regular expression syntax. */
#define REG_NOSUB (1 << 3)
-/* POSIX `eflags' bits (i.e., information for regexec). */
+/* POSIX 'eflags' bits (i.e., information for regexec). */
/* If this bit is set, then the beginning-of-line operator doesn't match
the beginning of the string (presumably because it's not the
/* If any error codes are removed, changed, or added, update the
- `__re_error_msgid' table in regcomp.c. */
+ '__re_error_msgid' table in regcomp.c. */
typedef enum
{
_REG_ENOSYS = -1, /* This will never happen for this implementation. */
-#define REG_ENOSYS _REG_ENOSYS
-
- _REG_NOERROR, /* Success. */
-#define REG_NOERROR _REG_NOERROR
-
+ _REG_NOERROR = 0, /* Success. */
_REG_NOMATCH, /* Didn't find a match (for regexec). */
-#define REG_NOMATCH _REG_NOMATCH
/* POSIX regcomp return error codes. (In the order listed in the
standard.) */
-
_REG_BADPAT, /* Invalid pattern. */
-#define REG_BADPAT _REG_BADPAT
-
- _REG_ECOLLATE, /* Inalid collating element. */
-#define REG_ECOLLATE _REG_ECOLLATE
-
+ _REG_ECOLLATE, /* Invalid collating element. */
_REG_ECTYPE, /* Invalid character class name. */
-#define REG_ECTYPE _REG_ECTYPE
-
_REG_EESCAPE, /* Trailing backslash. */
-#define REG_EESCAPE _REG_EESCAPE
-
_REG_ESUBREG, /* Invalid back reference. */
-#define REG_ESUBREG _REG_ESUBREG
-
_REG_EBRACK, /* Unmatched left bracket. */
-#define REG_EBRACK _REG_EBRACK
-
_REG_EPAREN, /* Parenthesis imbalance. */
-#define REG_EPAREN _REG_EPAREN
-
_REG_EBRACE, /* Unmatched \{. */
-#define REG_EBRACE _REG_EBRACE
-
_REG_BADBR, /* Invalid contents of \{\}. */
-#define REG_BADBR _REG_BADBR
-
_REG_ERANGE, /* Invalid range end. */
-#define REG_ERANGE _REG_ERANGE
-
_REG_ESPACE, /* Ran out of memory. */
-#define REG_ESPACE _REG_ESPACE
-
_REG_BADRPT, /* No preceding re for repetition op. */
-#define REG_BADRPT _REG_BADRPT
/* Error codes we've added. */
-
_REG_EEND, /* Premature end. */
-#define REG_EEND _REG_EEND
+ _REG_ESIZE, /* Too large (e.g., repeat count too large). */
+ _REG_ERPAREN /* Unmatched ) or \); not returned from regcomp. */
+} reg_errcode_t;
- _REG_ESIZE, /* Compiled pattern bigger than 2^16 bytes. */
+#if defined _XOPEN_SOURCE || defined __USE_XOPEN2K
+# define REG_ENOSYS _REG_ENOSYS
+#endif
+#define REG_NOERROR _REG_NOERROR
+#define REG_NOMATCH _REG_NOMATCH
+#define REG_BADPAT _REG_BADPAT
+#define REG_ECOLLATE _REG_ECOLLATE
+#define REG_ECTYPE _REG_ECTYPE
+#define REG_EESCAPE _REG_EESCAPE
+#define REG_ESUBREG _REG_ESUBREG
+#define REG_EBRACK _REG_EBRACK
+#define REG_EPAREN _REG_EPAREN
+#define REG_EBRACE _REG_EBRACE
+#define REG_BADBR _REG_BADBR
+#define REG_ERANGE _REG_ERANGE
+#define REG_ESPACE _REG_ESPACE
+#define REG_BADRPT _REG_BADRPT
+#define REG_EEND _REG_EEND
#define REG_ESIZE _REG_ESIZE
-
- _REG_ERPAREN /* Unmatched ) or \); not returned from regcomp. */
#define REG_ERPAREN _REG_ERPAREN
-
-} reg_errcode_t;
\f
-/* In the traditional GNU implementation, regex.h defined member names
- like `buffer' that POSIX does not allow. These members now have
- names with leading `re_' (e.g., `re_buffer'). Support the old
- names only if _REGEX_SOURCE is defined. New programs should use
- the new names. */
-#ifdef _REGEX_SOURCE
-# define _REG_RE_NAME(id) id
-# define _REG_RM_NAME(id) id
-#else
-# define _REG_RE_NAME(id) re_##id
-# define _REG_RM_NAME(id) rm_##id
-#endif
-
-/* The user can specify the type of the re_translate member by
- defining the macro REG_TRANSLATE_TYPE. In the traditional GNU
- implementation, this macro was named RE_TRANSLATE_TYPE, but POSIX
- does not allow this. Support the old name only if _REGEX_SOURCE
- and if the new name is not defined. New programs should use the new
- name. */
-#ifndef REG_TRANSLATE_TYPE
-# if defined _REGEX_SOURCE && defined RE_TRANSLATE_TYPE
-# define REG_TRANSLATE_TYPE RE_TRANSLATE_TYPE
-# else
-# define REG_TRANSLATE_TYPE char *
+/* This data structure represents a compiled pattern. Before calling
+ the pattern compiler, the fields 'buffer', 'allocated', 'fastmap',
+ and 'translate' can be set. After the pattern has been compiled,
+ the fields 're_nsub', 'not_bol' and 'not_eol' are available. All
+ other fields are private to the regex routines. */
+
+#ifndef RE_TRANSLATE_TYPE
+# define __RE_TRANSLATE_TYPE unsigned char *
+# ifdef __USE_GNU
+# define RE_TRANSLATE_TYPE __RE_TRANSLATE_TYPE
# endif
#endif
-/* This data structure represents a compiled pattern. Before calling
- the pattern compiler), the fields `re_buffer', `re_allocated', `re_fastmap',
- `re_translate', and `re_no_sub' can be set. After the pattern has been
- compiled, the `re_nsub' field is available. All other fields are
- private to the regex routines. */
+#ifdef __USE_GNU
+# define __REPB_PREFIX(name) name
+#else
+# define __REPB_PREFIX(name) __##name
+#endif
struct re_pattern_buffer
{
-/* [[[begin pattern_buffer]]] */
- /* Space that holds the compiled pattern. It is declared as
- `unsigned char *' because its elements are
- sometimes used as array indexes. */
- unsigned char *_REG_RE_NAME (buffer);
+ /* Space that holds the compiled pattern. The type
+ 'struct re_dfa_t' is private and is not declared here. */
+ struct re_dfa_t *__REPB_PREFIX(buffer);
- /* Number of bytes to which `re_buffer' points. */
- unsigned long int _REG_RE_NAME (allocated);
+ /* Number of bytes to which 'buffer' points. */
+ __re_long_size_t __REPB_PREFIX(allocated);
- /* Number of bytes actually used in `re_buffer'. */
- unsigned long int _REG_RE_NAME (used);
+ /* Number of bytes actually used in 'buffer'. */
+ __re_long_size_t __REPB_PREFIX(used);
- /* Syntax setting with which the pattern was compiled. */
- reg_syntax_t _REG_RE_NAME (syntax);
+ /* Syntax setting with which the pattern was compiled. */
+ reg_syntax_t __REPB_PREFIX(syntax);
- /* Pointer to a fastmap, if any, otherwise zero. re_search uses
- the fastmap, if there is one, to skip over impossible
- starting points for matches. */
- char *_REG_RE_NAME (fastmap);
+ /* Pointer to a fastmap, if any, otherwise zero. re_search uses the
+ fastmap, if there is one, to skip over impossible starting points
+ for matches. */
+ char *__REPB_PREFIX(fastmap);
- /* Either a translate table to apply to all characters before
- comparing them, or zero for no translation. The translation
- is applied to a pattern when it is compiled and to a string
- when it is matched. */
- REG_TRANSLATE_TYPE _REG_RE_NAME (translate);
+ /* Either a translate table to apply to all characters before
+ comparing them, or zero for no translation. The translation is
+ applied to a pattern when it is compiled and to a string when it
+ is matched. */
+ __RE_TRANSLATE_TYPE __REPB_PREFIX(translate);
- /* Number of subexpressions found by the compiler. */
+ /* Number of subexpressions found by the compiler. */
size_t re_nsub;
- /* Zero if this pattern cannot match the empty string, one else.
- Well, in truth it's used only in `re_search_2', to see
- whether or not we should use the fastmap, so we don't set
- this absolutely perfectly; see `re_compile_fastmap' (the
- `duplicate' case). */
- unsigned int _REG_RE_NAME (can_be_null) : 1;
-
- /* If REG_UNALLOCATED, allocate space in the `regs' structure
- for `max (REG_NREGS, re_nsub + 1)' groups.
- If REG_REALLOCATE, reallocate space if necessary.
- If REG_FIXED, use what's there. */
-#define REG_UNALLOCATED 0
-#define REG_REALLOCATE 1
-#define REG_FIXED 2
- unsigned int _REG_RE_NAME (regs_allocated) : 2;
-
- /* Set to zero when `regex_compile' compiles a pattern; set to one
- by `re_compile_fastmap' if it updates the fastmap. */
- unsigned int _REG_RE_NAME (fastmap_accurate) : 1;
-
- /* If set, `re_match_2' does not return information about
- subexpressions. */
- unsigned int _REG_RE_NAME (no_sub) : 1;
-
- /* If set, a beginning-of-line anchor doesn't match at the
- beginning of the string. */
- unsigned int _REG_RE_NAME (not_bol) : 1;
-
- /* Similarly for an end-of-line anchor. */
- unsigned int _REG_RE_NAME (not_eol) : 1;
-
- /* If true, an anchor at a newline matches. */
- unsigned int _REG_RE_NAME (newline_anchor) : 1;
-
-/* [[[end pattern_buffer]]] */
+ /* Zero if this pattern cannot match the empty string, one else.
+ Well, in truth it's used only in 're_search_2', to see whether or
+ not we should use the fastmap, so we don't set this absolutely
+ perfectly; see 're_compile_fastmap' (the "duplicate" case). */
+ unsigned __REPB_PREFIX(can_be_null) : 1;
+
+ /* If REGS_UNALLOCATED, allocate space in the 'regs' structure
+ for 'max (RE_NREGS, re_nsub + 1)' groups.
+ If REGS_REALLOCATE, reallocate space if necessary.
+ If REGS_FIXED, use what's there. */
+#ifdef __USE_GNU
+# define REGS_UNALLOCATED 0
+# define REGS_REALLOCATE 1
+# define REGS_FIXED 2
+#endif
+ unsigned __REPB_PREFIX(regs_allocated) : 2;
+
+ /* Set to zero when 're_compile_pattern' compiles a pattern; set to
+ one by 're_compile_fastmap' if it updates the fastmap. */
+ unsigned __REPB_PREFIX(fastmap_accurate) : 1;
+
+ /* If set, 're_match_2' does not return information about
+ subexpressions. */
+ unsigned __REPB_PREFIX(no_sub) : 1;
+
+ /* If set, a beginning-of-line anchor doesn't match at the beginning
+ of the string. */
+ unsigned __REPB_PREFIX(not_bol) : 1;
+
+ /* Similarly for an end-of-line anchor. */
+ unsigned __REPB_PREFIX(not_eol) : 1;
+
+ /* If true, an anchor at a newline matches. */
+ unsigned __REPB_PREFIX(newline_anchor) : 1;
};
typedef struct re_pattern_buffer regex_t;
\f
/* Type for byte offsets within the string. POSIX mandates this. */
+#ifdef _REGEX_LARGE_OFFSETS
+/* POSIX 1003.1-2008 requires that regoff_t be at least as wide as
+ ptrdiff_t and ssize_t. We don't know of any hosts where ptrdiff_t
+ is wider than ssize_t, so ssize_t is safe. */
+typedef ssize_t regoff_t;
+#else
+/* The traditional GNU regex implementation mishandles strings longer
+ than INT_MAX. */
typedef int regoff_t;
+#endif
+#ifdef __USE_GNU
/* This is the structure we store register match data in. See
regex.texinfo for a full description of what registers match. */
struct re_registers
{
- unsigned int _REG_RM_NAME (num_regs);
- regoff_t *_REG_RM_NAME (start);
- regoff_t *_REG_RM_NAME (end);
+ __re_size_t num_regs;
+ regoff_t *start;
+ regoff_t *end;
};
-/* If `regs_allocated' is REG_UNALLOCATED in the pattern buffer,
- `re_match_2' returns information about at least this many registers
- the first time a `regs' structure is passed. */
-#ifndef REG_NREGS
-# define REG_NREGS 30
+/* If 'regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
+ 're_match_2' returns information about at least this many registers
+ the first time a 'regs' structure is passed. */
+# ifndef RE_NREGS
+# define RE_NREGS 30
+# endif
#endif
/* POSIX specification for registers. Aside from the different names than
- `re_registers', POSIX uses an array of structures, instead of a
+ 're_registers', POSIX uses an array of structures, instead of a
structure of arrays. */
typedef struct
{
\f
/* Declarations for routines. */
+#ifdef __USE_GNU
/* Sets the current default syntax to SYNTAX, and return the old syntax.
- You can also simply assign to the `re_syntax_options' variable. */
+ You can also simply assign to the 're_syntax_options' variable. */
extern reg_syntax_t re_set_syntax (reg_syntax_t __syntax);
/* Compile the regular expression PATTERN, with length LENGTH
- and syntax given by the global `re_syntax_options', into the buffer
- BUFFER. Return NULL if successful, and an error string if not. */
+ and syntax given by the global 're_syntax_options', into the buffer
+ BUFFER. Return NULL if successful, and an error string if not.
+
+ To free the allocated storage, you must call 'regfree' on BUFFER.
+ Note that the translate table must either have been initialised by
+ 'regcomp', with a malloc'ed value, or set to NULL before calling
+ 'regfree'. */
extern const char *re_compile_pattern (const char *__pattern, size_t __length,
struct re_pattern_buffer *__buffer);
compiled into BUFFER. Start searching at position START, for RANGE
characters. Return the starting position of the match, -1 for no
match, or -2 for an internal error. Also return register
- information in REGS (if REGS and BUFFER->re_no_sub are nonzero). */
-extern int re_search (struct re_pattern_buffer *__buffer, const char *__string,
- int __length, int __start, int __range,
- struct re_registers *__regs);
+ information in REGS (if REGS and BUFFER->no_sub are nonzero). */
+extern regoff_t re_search (struct re_pattern_buffer *__buffer,
+ const char *__string, __re_idx_t __length,
+ __re_idx_t __start, regoff_t __range,
+ struct re_registers *__regs);
-/* Like `re_search', but search in the concatenation of STRING1 and
+/* Like 're_search', but search in the concatenation of STRING1 and
STRING2. Also, stop searching at index START + STOP. */
-extern int re_search_2 (struct re_pattern_buffer *__buffer,
- const char *__string1, int __length1,
- const char *__string2, int __length2,
- int __start, int __range, struct re_registers *__regs,
- int __stop);
+extern regoff_t re_search_2 (struct re_pattern_buffer *__buffer,
+ const char *__string1, __re_idx_t __length1,
+ const char *__string2, __re_idx_t __length2,
+ __re_idx_t __start, regoff_t __range,
+ struct re_registers *__regs,
+ __re_idx_t __stop);
-/* Like `re_search', but return how many characters in STRING the regexp
+/* Like 're_search', but return how many characters in STRING the regexp
in BUFFER matched, starting at position START. */
-extern int re_match (struct re_pattern_buffer *__buffer, const char *__string,
- int __length, int __start, struct re_registers *__regs);
+extern regoff_t re_match (struct re_pattern_buffer *__buffer,
+ const char *__string, __re_idx_t __length,
+ __re_idx_t __start, struct re_registers *__regs);
-/* Relates to `re_match' as `re_search_2' relates to `re_search'. */
-extern int re_match_2 (struct re_pattern_buffer *__buffer,
- const char *__string1, int __length1,
- const char *__string2, int __length2,
- int __start, struct re_registers *__regs, int __stop);
+/* Relates to 're_match' as 're_search_2' relates to 're_search'. */
+extern regoff_t re_match_2 (struct re_pattern_buffer *__buffer,
+ const char *__string1, __re_idx_t __length1,
+ const char *__string2, __re_idx_t __length2,
+ __re_idx_t __start, struct re_registers *__regs,
+ __re_idx_t __stop);
/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
ENDS. Subsequent matches using BUFFER and REGS will use this memory
for recording register information. STARTS and ENDS must be
- allocated with malloc, and must each be at least `NUM_REGS * sizeof
+ allocated with malloc, and must each be at least 'NUM_REGS * sizeof
(regoff_t)' bytes long.
If NUM_REGS == 0, then subsequent matches should allocate their own
register data.
Unless this function is called, the first search or match using
- PATTERN_BUFFER will allocate its own register data, without
+ BUFFER will allocate its own register data, without
freeing the old data. */
extern void re_set_registers (struct re_pattern_buffer *__buffer,
struct re_registers *__regs,
- unsigned int __num_regs,
+ __re_size_t __num_regs,
regoff_t *__starts, regoff_t *__ends);
+#endif /* Use GNU */
-#if defined _REGEX_RE_COMP || defined _LIBC
+#if defined _REGEX_RE_COMP || (defined _LIBC && defined __USE_BSD)
# ifndef _CRAY
/* 4.2 bsd compatibility. */
extern char *re_comp (const char *);
#endif
/* GCC 2.95 and later have "__restrict"; C99 compilers have
- "restrict", and "configure" may have defined "restrict". */
-#ifndef __restrict
-# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
-# if defined restrict || 199901L <= __STDC_VERSION__
-# define __restrict restrict
-# else
-# define __restrict
-# endif
+ "restrict", and "configure" may have defined "restrict".
+ Other compilers use __restrict, __restrict__, and _Restrict, and
+ 'configure' might #define 'restrict' to those words, so pick a
+ different name. */
+#ifndef _Restrict_
+# if 199901L <= __STDC_VERSION__
+# define _Restrict_ restrict
+# elif 2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__)
+# define _Restrict_ __restrict
+# else
+# define _Restrict_
# endif
#endif
-/* gcc 3.1 and up support the [restrict] syntax, but g++ doesn't. */
-#ifndef __restrict_arr
-# if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) && !defined __cplusplus
-# define __restrict_arr __restrict
+/* gcc 3.1 and up support the [restrict] syntax. Don't trust
+ sys/cdefs.h's definition of __restrict_arr, though, as it
+ mishandles gcc -ansi -pedantic. */
+#ifndef _Restrict_arr_
+# if ((199901L <= __STDC_VERSION__ \
+ || ((3 < __GNUC__ || (3 == __GNUC__ && 1 <= __GNUC_MINOR__)) \
+ && !defined __STRICT_ANSI__)) \
+ && !defined __GNUG__)
+# define _Restrict_arr_ _Restrict_
# else
-# define __restrict_arr
+# define _Restrict_arr_
# endif
#endif
/* POSIX compatibility. */
-extern int regcomp (regex_t *__restrict __preg,
- const char *__restrict __pattern,
+extern int regcomp (regex_t *_Restrict_ __preg,
+ const char *_Restrict_ __pattern,
int __cflags);
-extern int regexec (const regex_t *__restrict __preg,
- const char *__restrict __string, size_t __nmatch,
- regmatch_t __pmatch[__restrict_arr],
+extern int regexec (const regex_t *_Restrict_ __preg,
+ const char *_Restrict_ __string, size_t __nmatch,
+ regmatch_t __pmatch[_Restrict_arr_],
int __eflags);
-extern size_t regerror (int __errcode, const regex_t *__preg,
- char *__errbuf, size_t __errbuf_size);
+extern size_t regerror (int __errcode, const regex_t *_Restrict_ __preg,
+ char *_Restrict_ __errbuf, size_t __errbuf_size);
extern void regfree (regex_t *__preg);
-#ifdef _REGEX_SOURCE
-
-/* Define the POSIX-compatible member names in terms of the
- incompatible (and deprecated) names established by _REG_RE_NAME.
- New programs should use the re_* names. */
-
-# define re_allocated allocated
-# define re_buffer buffer
-# define re_can_be_null can_be_null
-# define re_fastmap fastmap
-# define re_newline_anchor newline_anchor
-# define re_no_sub no_sub
-# define re_not_bol not_bol
-# define re_not_eol not_eol
-# define re_regs_allocated regs_allocated
-# define re_syntax syntax
-# define re_translate translate
-# define re_used used
-
-/* Similarly for _REG_RM_NAME. */
-
-# define rm_end end
-# define rm_num_regs num_regs
-# define rm_start start
-
-/* Undef RE_DUP_MAX first, in case the user has already included a
- <limits.h> with an incompatible definition.
-
- On GNU systems, the most common spelling for RE_DUP_MAX's value in
- <limits.h> is (0x7ffff), so define RE_DUP_MAX to that, not to
- REG_DUP_MAX. This avoid some duplicate-macro-definition warnings
- with programs that include <limits.h> after this file.
-
- New programs should not assume that regex.h defines RE_DUP_MAX; to
- get the value of RE_DUP_MAX, they should instead include <limits.h>
- and possibly invoke the sysconf function. */
-
-# undef RE_DUP_MAX
-# define RE_DUP_MAX (0x7fff)
-
-/* Define the following symbols for backward source compatibility.
- These symbols violate the POSIX name space rules, and new programs
- should avoid them. */
-
-# define REGS_FIXED REG_FIXED
-# define REGS_REALLOCATE REG_REALLOCATE
-# define REGS_UNALLOCATED REG_UNALLOCATED
-# define RE_BACKSLASH_ESCAPE_IN_LISTS REG_BACKSLASH_ESCAPE_IN_LISTS
-# define RE_BK_PLUS_QM REG_BK_PLUS_QM
-# define RE_CARET_ANCHORS_HERE REG_CARET_ANCHORS_HERE
-# define RE_CHAR_CLASSES REG_CHAR_CLASSES
-# define RE_CONTEXT_INDEP_ANCHORS REG_CONTEXT_INDEP_ANCHORS
-# define RE_CONTEXT_INDEP_OPS REG_CONTEXT_INDEP_OPS
-# define RE_CONTEXT_INVALID_DUP REG_CONTEXT_INVALID_DUP
-# define RE_CONTEXT_INVALID_OPS REG_CONTEXT_INVALID_OPS
-# define RE_DEBUG REG_DEBUG
-# define RE_DOT_NEWLINE REG_DOT_NEWLINE
-# define RE_DOT_NOT_NULL REG_DOT_NOT_NULL
-# define RE_HAT_LISTS_NOT_NEWLINE REG_HAT_LISTS_NOT_NEWLINE
-# define RE_ICASE REG_IGNORE_CASE /* avoid collision with REG_ICASE */
-# define RE_INTERVALS REG_INTERVALS
-# define RE_INVALID_INTERVAL_ORD REG_INVALID_INTERVAL_ORD
-# define RE_LIMITED_OPS REG_LIMITED_OPS
-# define RE_NEWLINE_ALT REG_NEWLINE_ALT
-# define RE_NO_BK_BRACES REG_NO_BK_BRACES
-# define RE_NO_BK_PARENS REG_NO_BK_PARENS
-# define RE_NO_BK_REFS REG_NO_BK_REFS
-# define RE_NO_BK_VBAR REG_NO_BK_VBAR
-# define RE_NO_EMPTY_RANGES REG_NO_EMPTY_RANGES
-# define RE_NO_GNU_OPS REG_NO_GNU_OPS
-# define RE_NO_POSIX_BACKTRACKING REG_NO_POSIX_BACKTRACKING
-# define RE_NO_SUB REG_NO_SUB
-# define RE_NREGS REG_NREGS
-# define RE_SYNTAX_AWK REG_SYNTAX_AWK
-# define RE_SYNTAX_ED REG_SYNTAX_ED
-# define RE_SYNTAX_EGREP REG_SYNTAX_EGREP
-# define RE_SYNTAX_EMACS REG_SYNTAX_EMACS
-# define RE_SYNTAX_GNU_AWK REG_SYNTAX_GNU_AWK
-# define RE_SYNTAX_GREP REG_SYNTAX_GREP
-# define RE_SYNTAX_POSIX_AWK REG_SYNTAX_POSIX_AWK
-# define RE_SYNTAX_POSIX_BASIC REG_SYNTAX_POSIX_BASIC
-# define RE_SYNTAX_POSIX_EGREP REG_SYNTAX_POSIX_EGREP
-# define RE_SYNTAX_POSIX_EXTENDED REG_SYNTAX_POSIX_EXTENDED
-# define RE_SYNTAX_POSIX_MINIMAL_BASIC REG_SYNTAX_POSIX_MINIMAL_BASIC
-# define RE_SYNTAX_POSIX_MINIMAL_EXTENDED REG_SYNTAX_POSIX_MINIMAL_EXTENDED
-# define RE_SYNTAX_SED REG_SYNTAX_SED
-# define RE_UNMATCHED_RIGHT_PAREN_ORD REG_UNMATCHED_RIGHT_PAREN_ORD
-# ifndef RE_TRANSLATE_TYPE
-# define RE_TRANSLATE_TYPE REG_TRANSLATE_TYPE
-# endif
-
-#endif /* defined _REGEX_SOURCE */
-
#ifdef __cplusplus
}
#endif /* C++ */
#endif /* regex.h */
-\f
-/*
-Local variables:
-make-backup-files: t
-version-control: t
-trim-versions-without-asking: nil
-End:
-*/
projects / gnulib.git / blobdiff