/* Definitions for data structures and routines for the regular
- expression library, version 0.11.
-
- Copyright (C) 1985, 89, 90, 91, 92 Free Software Foundation, Inc.
+ expression library.
+ Copyright (C) 1985,1989-93,1995-98,2000,2001,2002,2003,2005
+ 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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
+
+#ifndef _REGEX_H
+#define _REGEX_H 1
+
+#include <sys/types.h>
+
+/* Allow the use in C++ code. */
+#ifdef __cplusplus
+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
+#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>
+#endif
+
+#ifdef _REGEX_LARGE_OFFSETS
-#ifndef __REGEXP_LIBRARY_H__
-#define __REGEXP_LIBRARY_H__
+/* 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. */
-/* POSIX says that <sys/types.h> must be included before <regex.h>. */
+/* The type of the offset of a byte within a string.
+ For historical reasons POSIX 1003.1-2004 requires that regoff_t be
+ at least as wide as off_t. This is a bit odd (and many common
+ POSIX platforms set it to the more-sensible ssize_t) but we might
+ as well conform. We don't know of any hosts where ssize_t is wider
+ than off_t, so off_t is safe. */
+typedef off_t regoff_t;
+
+/* 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
+
+/* Use types that are binary-compatible with the traditional GNU regex
+ implementation, which mishandles strings longer than INT_MAX. */
+
+typedef int regoff_t;
+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
+ wide enough to hold a value of a pointer. For most ANSI compilers
+ ptrdiff_t and size_t should be likely OK. Still size of these two
+ types is 2 for Microsoft C. Ugh... */
+typedef long int s_reg_t;
+typedef unsigned long int active_reg_t;
/* The following bits are used to determine the regexp syntax we
recognize. The set/not-set meanings are chosen so that Emacs syntax
remains the value 0. The bits are given in alphabetical order, and
the definitions shifted by one from the previous bit; thus, when we
add or remove a bit, only one other definition need change. */
-typedef unsigned reg_syntax_t;
+typedef unsigned long int reg_syntax_t;
/* If this bit is not set, then \ inside a bracket expression is literal.
If set, then such a \ quotes the following character. */
-#define RE_BACKSLASH_ESCAPE_IN_LISTS (1)
+#define REG_BACKSLASH_ESCAPE_IN_LISTS 1ul
/* If this bit is not set, then + and ? are operators, and \+ and \? are
- literals.
+ literals.
If set, then \+ and \? are operators and + and ? are literals. */
-#define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
+#define REG_BK_PLUS_QM (1ul << 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 RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)
+#define REG_CHAR_CLASSES (1ul << 2)
/* If this bit is set, then ^ and $ are always anchors (outside bracket
expressions, of course).
^ 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.
+ before a close-group or an alternation operator.
- This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because
+ This bit could be (re)combined with REG_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 RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)
+#define REG_CONTEXT_INDEP_ANCHORS (1ul << 3)
/* If this bit is set, then special characters are always special
regardless of where they are in the pattern.
If this bit is not set, then special characters are special only in
- some contexts; otherwise they are ordinary. Specifically,
+ some contexts; otherwise they are ordinary. Specifically,
* + ? and intervals are only special when not after the beginning,
open-group, or alternation operator. */
-#define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)
+#define REG_CONTEXT_INDEP_OPS (1ul << 4)
/* If this bit is set, then *, +, ?, and { cannot be first in an re or
immediately after an alternation or begin-group operator. */
-#define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)
+#define REG_CONTEXT_INVALID_OPS (1ul << 5)
/* If this bit is set, then . matches newline.
If not set, then it doesn't. */
-#define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)
+#define REG_DOT_NEWLINE (1ul << 6)
/* If this bit is set, then . doesn't match NUL.
If not set, then it does. */
-#define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)
+#define REG_DOT_NOT_NULL (1ul << 7)
/* If this bit is set, nonmatching lists [^...] do not match newline.
If not set, they do. */
-#define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
+#define REG_HAT_LISTS_NOT_NEWLINE (1ul << 8)
/* If this bit is set, either \{...\} or {...} defines an
- interval, depending on RE_NO_BK_BRACES.
+ interval, depending on REG_NO_BK_BRACES.
If not set, \{, \}, {, and } are literals. */
-#define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)
+#define REG_INTERVALS (1ul << 9)
/* If this bit is set, +, ? and | aren't recognized as operators.
If not set, they are. */
-#define RE_LIMITED_OPS (RE_INTERVALS << 1)
+#define REG_LIMITED_OPS (1ul << 10)
/* If this bit is set, newline is an alternation operator.
If not set, newline is literal. */
-#define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
+#define REG_NEWLINE_ALT (1ul << 11)
/* If this bit is set, then `{...}' defines an interval, and \{ and \}
are literals.
If not set, then `\{...\}' defines an interval. */
-#define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
+#define REG_NO_BK_BRACES (1ul << 12)
/* If this bit is set, (...) defines a group, and \( and \) are literals.
If not set, \(...\) defines a group, and ( and ) are literals. */
-#define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)
+#define REG_NO_BK_PARENS (1ul << 13)
/* If this bit is set, then \<digit> matches <digit>.
If not set, then \<digit> is a back-reference. */
-#define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)
+#define REG_NO_BK_REFS (1ul << 14)
-/* If this bit is set, then | is an alternation operator, and \| is literal.
+/* 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 RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)
+#define REG_NO_BK_VBAR (1ul << 15)
/* 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, 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 not set, the containing range is empty and does not match any string. */
+#define REG_NO_EMPTY_RANGES (1ul << 16)
/* If this bit is set, then an unmatched ) is ordinary.
If not set, then an unmatched ) is invalid. */
-#define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
+#define REG_UNMATCHED_RIGHT_PAREN_ORD (1ul << 17)
+
+/* If this bit is set, succeed as soon as we match the whole pattern,
+ without further backtracking. */
+#define REG_NO_POSIX_BACKTRACKING (1ul << 18)
+
+/* 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)
+
+/* If this bit is set, turn on internal regex debugging.
+ If not set, and debugging was on, turn it off.
+ This only works if regex.c is compiled -DDEBUG.
+ 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)
+
+/* 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)
+
+/* If this bit is set, then ignore case when matching.
+ If not set, then case is significant. */
+#define REG_IGNORE_CASE (1ul << 22)
+
+/* This bit is used internally like REG_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)
+
+/* 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 no_sub will be set to 1 during
+ re_compile_pattern. */
+#define REG_NO_SUB (1ul << 25)
/* This global variable defines the particular regexp syntax to use (for
some interfaces). When a regexp is compiled, the syntax used is
\f
/* 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!) */
+ don't delete them!) */
/* [[[begin syntaxes]]] */
-#define RE_SYNTAX_EMACS 0
+#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 RE_SYNTAX_AWK \
- (RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL \
- | RE_NO_BK_PARENS | RE_NO_BK_REFS \
- | RE_NO_BK_VAR | RE_NO_EMPTY_RANGES \
- | RE_UNMATCHED_RIGHT_PAREN_ORD)
+#define REG_SYNTAX_POSIX_AWK \
+ (REG_SYNTAX_POSIX_EXTENDED | REG_BACKSLASH_ESCAPE_IN_LISTS \
+ | REG_INTERVALS | REG_NO_GNU_OPS)
-#define RE_SYNTAX_POSIX_AWK \
- (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS)
+#define REG_SYNTAX_GREP \
+ (REG_BK_PLUS_QM | REG_CHAR_CLASSES \
+ | REG_HAT_LISTS_NOT_NEWLINE | REG_INTERVALS \
+ | REG_NEWLINE_ALT)
-#define RE_SYNTAX_GREP \
- (RE_BK_PLUS_QM | RE_CHAR_CLASSES \
- | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS \
- | RE_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 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 REG_SYNTAX_POSIX_EGREP \
+ (REG_SYNTAX_EGREP | REG_INTERVALS | REG_NO_BK_BRACES \
+ | REG_INVALID_INTERVAL_ORD)
-#define RE_SYNTAX_POSIX_EGREP \
- (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES)
+/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff. */
+#define REG_SYNTAX_ED REG_SYNTAX_POSIX_BASIC
-#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
+#define REG_SYNTAX_SED REG_SYNTAX_POSIX_BASIC
/* Syntax bits common to both basic and extended POSIX regex syntax. */
-#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_COMMON \
+ (REG_CHAR_CLASSES | REG_DOT_NEWLINE | REG_DOT_NOT_NULL \
+ | REG_INTERVALS | REG_NO_EMPTY_RANGES)
-#define RE_SYNTAX_POSIX_BASIC \
- (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM)
+#define REG_SYNTAX_POSIX_BASIC \
+ (_REG_SYNTAX_POSIX_COMMON | REG_BK_PLUS_QM | REG_CONTEXT_INVALID_DUP)
-/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
- RE_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this
+/* Differs from ..._POSIX_BASIC only in that REG_BK_PLUS_QM becomes
+ REG_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this
isn't minimal, since other operators, such as \`, aren't disabled. */
-#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_UNMATCHED_RIGHT_PAREN_ORD)
-
-/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INVALID_OPS
- replaces RE_CONTEXT_INDEP_OPS 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)
+#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)
/* [[[end syntaxes]]] */
\f
-/* Maximum number of duplicates an interval can allow. Some systems
- (erroneously) define this in other header files, but we want our
- value, so remove any previous define. */
-#ifdef RE_DUP_MAX
-#undef RE_DUP_MAX
-#endif
-#define RE_DUP_MAX ((1 << 15) - 1)
+/* 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
/* POSIX `cflags' bits (i.e., information for `regcomp'). */
/* If this bit is set, then ignore case when matching.
If not set, then case is significant. */
-#define REG_ICASE (REG_EXTENDED << 1)
-
+#define REG_ICASE (1 << 1)
+
/* If this bit is set, then anchors do not match at newline
characters in the string.
If not set, then anchors do match at newlines. */
-#define REG_NEWLINE (REG_ICASE << 1)
+#define REG_NEWLINE (1 << 2)
/* If this bit is set, then report only success or fail in regexec.
If not set, then returns differ between not matching and errors. */
-#define REG_NOSUB (REG_NEWLINE << 1)
+#define REG_NOSUB (1 << 3)
/* POSIX `eflags' bits (i.e., information for regexec). */
/* Like REG_NOTBOL, except for the end-of-line. */
#define REG_NOTEOL (1 << 1)
+/* Use PMATCH[0] to delimit the start and end of the search in the
+ buffer. */
+#define REG_STARTEND (1 << 2)
+
/* If any error codes are removed, changed, or added, update the
- `re_error_msg' table in regex.c. */
+ `__re_error_msgid' table in regcomp.c. */
+
typedef enum
{
- REG_NOERROR = 0, /* Success. */
- REG_NOMATCH, /* Didn't find a match (for regexec). */
+ _REG_ENOSYS = -1, /* This will never happen for this implementation. */
+#define REG_ENOSYS _REG_ENOSYS
+
+ _REG_NOERROR, /* Success. */
+#define REG_NOERROR _REG_NOERROR
+
+ _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. */
- REG_ECOLLATE, /* Not implemented. */
- REG_ECTYPE, /* Invalid character class name. */
- REG_EESCAPE, /* Trailing backslash. */
- REG_ESUBREG, /* Invalid back reference. */
- REG_EBRACK, /* Unmatched left bracket. */
- REG_EPAREN, /* Parenthesis imbalance. */
- REG_EBRACE, /* Unmatched \{. */
- REG_BADBR, /* Invalid contents of \{\}. */
- REG_ERANGE, /* Invalid range end. */
- REG_ESPACE, /* Ran out of memory. */
- REG_BADRPT, /* No preceding re for repetition op. */
+
+ _REG_BADPAT, /* Invalid pattern. */
+#define REG_BADPAT _REG_BADPAT
+
+ _REG_ECOLLATE, /* Inalid collating element. */
+#define REG_ECOLLATE _REG_ECOLLATE
+
+ _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. */
- REG_ESIZE, /* Compiled pattern bigger than 2^16 bytes. */
- REG_ERPAREN /* Unmatched ) or \); not returned from regcomp. */
+
+ _REG_EEND, /* Premature end. */
+#define REG_EEND _REG_EEND
+
+ _REG_ESIZE, /* Compiled pattern bigger than 2^16 bytes. */
+#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 *
+# endif
+#endif
+
/* This data structure represents a compiled pattern. Before calling
- the pattern compiler, the fields `buffer', `allocated', `fastmap',
- `translate', and `no_sub' can be set. After the pattern has been
+ 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. */
/* Space that holds the compiled pattern. It is declared as
`unsigned char *' because its elements are
sometimes used as array indexes. */
- unsigned char *buffer;
+ unsigned char *_REG_RE_NAME (buffer);
- /* Number of bytes to which `buffer' points. */
- unsigned long allocated;
+ /* Number of bytes to which `re_buffer' points. */
+ __re_long_size_t _REG_RE_NAME (allocated);
- /* Number of bytes actually used in `buffer'. */
- unsigned long used;
+ /* Number of bytes actually used in `re_buffer'. */
+ __re_long_size_t _REG_RE_NAME (used);
/* Syntax setting with which the pattern was compiled. */
- reg_syntax_t syntax;
+ reg_syntax_t _REG_RE_NAME (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 *fastmap;
+ char *_REG_RE_NAME (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. */
- char *translate;
+ REG_TRANSLATE_TYPE _REG_RE_NAME (translate);
/* Number of subexpressions found by the compiler. */
size_t re_nsub;
whether or not we should use the fastmap, so we don't set
this absolutely perfectly; see `re_compile_fastmap' (the
`duplicate' case). */
- unsigned can_be_null : 1;
+ unsigned int _REG_RE_NAME (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. */
-#define REGS_UNALLOCATED 0
-#define REGS_REALLOCATE 1
-#define REGS_FIXED 2
- unsigned regs_allocated : 2;
+ /* 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 when it updates the fastmap, if any. */
- unsigned fastmap_accurate : 1;
+ /* 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, regexec reports only success or failure and does not
- return anything in pmatch. */
- unsigned no_sub : 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 not_bol : 1;
+ beginning of the string. */
+ unsigned int _REG_RE_NAME (not_bol) : 1;
/* Similarly for an end-of-line anchor. */
- unsigned not_eol : 1;
+ unsigned int _REG_RE_NAME (not_eol) : 1;
/* If true, an anchor at a newline matches. */
- unsigned newline_anchor : 1;
+ unsigned int _REG_RE_NAME (newline_anchor) : 1;
/* [[[end pattern_buffer]]] */
};
typedef struct re_pattern_buffer regex_t;
-
-
-/* search.c (search_buffer) in Emacs needs this one opcode value. It is
- defined both in `regex.c' and here. */
-#define RE_EXACTN_VALUE 1
\f
-/* Type for byte offsets within the string. POSIX mandates this. */
-typedef int regoff_t;
-
-
/* 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 num_regs;
- regoff_t *start;
- regoff_t *end;
+ __re_size_t _REG_RM_NAME (num_regs);
+ regoff_t *_REG_RM_NAME (start);
+ regoff_t *_REG_RM_NAME (end);
};
-/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
+/* 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 RE_NREGS
-#define RE_NREGS 30
+#ifndef REG_NREGS
+# define REG_NREGS 30
#endif
\f
/* Declarations for routines. */
-/* To avoid duplicating every routine declaration -- once with a
- prototype (if we are ANSI), and once without (if we aren't) -- we
- use the following macro to declare argument types. This
- unfortunately clutters up the declarations a bit, but I think it's
- worth it.
-
- We also have to undo `const' if we are not ANSI and if it hasn't
- previously being taken care of. */
-
-#if __STDC__
-#define _RE_ARGS(args) args
-#else
-#define _RE_ARGS(args) ()
-#ifndef const
-#define const
-#endif
-#endif
-
/* Sets the current default syntax to SYNTAX, and return the old syntax.
You can also simply assign to the `re_syntax_options' variable. */
-extern reg_syntax_t re_set_syntax _RE_ARGS ((reg_syntax_t syntax));
+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. */
-extern const char *re_compile_pattern
- _RE_ARGS ((const char *pattern, int length,
- struct re_pattern_buffer *buffer));
+extern const char *re_compile_pattern (const char *__pattern, size_t __length,
+ struct re_pattern_buffer *__buffer);
/* Compile a fastmap for the compiled pattern in BUFFER; used to
accelerate searches. Return 0 if successful and -2 if was an
internal error. */
-extern int re_compile_fastmap _RE_ARGS ((struct re_pattern_buffer *buffer));
+extern int re_compile_fastmap (struct re_pattern_buffer *__buffer);
/* Search in the string STRING (with length LENGTH) for the pattern
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->no_sub are nonzero). */
-extern int re_search
- _RE_ARGS ((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->re_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
STRING2. Also, stop searching at index START + STOP. */
-extern int re_search_2
- _RE_ARGS ((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
in BUFFER matched, starting at position START. */
-extern int re_match
- _RE_ARGS ((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
- _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string1,
- int length1, const char *string2, int length2,
- int start, struct re_registers *regs, int stop));
+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
Unless this function is called, the first search or match using
PATTERN_BUFFER will allocate its own register data, without
freeing the old data. */
-extern void re_set_registers
- _RE_ARGS ((struct re_pattern_buffer *buffer, struct re_registers *regs,
- unsigned num_regs, regoff_t *starts, regoff_t *ends));
+extern void re_set_registers (struct re_pattern_buffer *__buffer,
+ struct re_registers *__regs,
+ __re_size_t __num_regs,
+ regoff_t *__starts, regoff_t *__ends);
+#if defined _REGEX_RE_COMP || defined _LIBC
+# ifndef _CRAY
/* 4.2 bsd compatibility. */
-extern char *re_comp _RE_ARGS ((const char *));
-extern int re_exec _RE_ARGS ((const char *));
+extern char *re_comp (const char *);
+extern int re_exec (const char *);
+# endif
+#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
+# 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
+# else
+# define __restrict_arr
+# endif
+#endif
/* POSIX compatibility. */
-extern int regcomp _RE_ARGS ((regex_t *preg, const char *pattern, int cflags));
-extern int regexec
- _RE_ARGS ((const regex_t *preg, const char *string, size_t nmatch,
- regmatch_t pmatch[], int eflags));
-extern size_t regerror
- _RE_ARGS ((int errcode, const regex_t *preg, char *errbuf,
- size_t errbuf_size));
-extern void regfree _RE_ARGS ((regex_t *preg));
-
-#endif /* not __REGEXP_LIBRARY_H__ */
+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],
+ int __eflags);
+
+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_fastmap_accurate fastmap_accurate
+# 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:
projects / gnulib.git / blobdiff