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authorPaul Eggert <eggert@cs.ucla.edu>2006-08-21 07:26:38 +0000
committerPaul Eggert <eggert@cs.ucla.edu>2006-08-21 07:26:38 +0000
commit0f7a044109b860443ecaa4f8a37652b1b4423057 (patch)
treeb5834ed9867213221a2636e0fa7e8da178749a76 /lib/regex.h
parent11fd62b0080ce376b26241bd789b7e7390befef6 (diff)
downloadcoreutils-0f7a044109b860443ecaa4f8a37652b1b4423057.tar.xz
Remove from CVS, since the bootstrap script generates them automatically.
Diffstat (limited to 'lib/regex.h')
-rw-r--r--lib/regex.h668
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diff --git a/lib/regex.h b/lib/regex.h
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--- a/lib/regex.h
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@@ -1,668 +0,0 @@
-/* Definitions for data structures and routines for the regular
- expression library.
- Copyright (C) 1985,1989-93,1995-98,2000,2001,2002,2003,2005,2006
- 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.
-
- This program 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.
-
- 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 __USE_GNU_REGEX to declare GNU extensions that violate the
- POSIX name space rules. */
-#undef __USE_GNU_REGEX
-#if (defined _GNU_SOURCE \
- || (!defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE \
- && !defined _XOPEN_SOURCE))
-# define __USE_GNU_REGEX 1
-#endif
-
-#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 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. However, many common POSIX platforms set
- regoff_t to the more-sensible ssize_t and the Open Group has
- signalled its intention to change the requirement to be that
- regoff_t be at least as wide as ptrdiff_t and ssize_t; see XBD ERN
- 60 (2005-08-25). We don't know of any hosts where ssize_t or
- ptrdiff_t is wider than ssize_t, so ssize_t is safe. */
-typedef ssize_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 long int reg_syntax_t;
-
-#ifdef __USE_GNU_REGEX
-
-/* 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 ((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 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 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.
-
- 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 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.
- If this bit is not set, then special characters are special only in
- 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)
-
-/* 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)
-
-/* If this bit is set, then . matches newline.
- If not set, then it doesn't. */
-# 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 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 RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
-
-/* If this bit is set, either \{...\} or {...} defines an
- interval, depending on RE_NO_BK_BRACES.
- If not set, \{, \}, {, and } are literals. */
-# 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 RE_LIMITED_OPS (RE_INTERVALS << 1)
-
-/* If this bit is set, newline is an alternation operator.
- If not set, newline is literal. */
-# define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
-
-/* 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)
-
-/* 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)
-
-/* 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)
-
-/* 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)
-
-/* 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 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)
-
-/* If this bit is set, succeed as soon as we match the whole pattern,
- without further backtracking. */
-# 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 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.
- 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 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 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 RE_ICASE (RE_INVALID_INTERVAL_ORD << 1)
-
-/* 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 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 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 RE_NO_SUB (RE_CONTEXT_INVALID_DUP << 1)
-
-#endif /* defined __USE_GNU_REGEX */
-
-/* This global variable defines the particular regexp syntax to use (for
- some interfaces). When a regexp is compiled, the syntax used is
- stored in the pattern buffer, so changing this does not affect
- already-compiled regexps. */
-extern reg_syntax_t re_syntax_options;
-
-#ifdef __USE_GNU_REGEX
-/* 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 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_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
-
-# define RE_SYNTAX_GNU_AWK \
- ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG) \
- & ~(RE_DOT_NOT_NULL | RE_INTERVALS | 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)
-
-# 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 RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
-
-# define RE_SYNTAX_SED RE_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 RE_SYNTAX_POSIX_BASIC \
- (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM | RE_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
- 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_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]]] */
-
-#endif /* defined __USE_GNU_REGEX */
-
-#ifdef __USE_GNU_REGEX
-
-/* 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 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 - 2) / 10 - 1) 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 /* defined __USE_GNU_REGEX */
-
-
-/* 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_EXTENDED 1
-
-/* If this bit is set, then ignore case when matching.
- If not set, then case is significant. */
-#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 (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 (1 << 3)
-
-
-/* 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
- beginning of a line).
- If not set, then the beginning-of-line operator does match the
- beginning of the string. */
-#define REG_NOTBOL 1
-
-/* 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_msgid' table in regcomp.c. */
-
-typedef enum
-{
- _REG_ENOSYS = -1, /* This will never happen for this implementation. */
- _REG_NOERROR = 0, /* Success. */
- _REG_NOMATCH, /* Didn't find a match (for regexec). */
-
- /* POSIX regcomp return error codes. (In the order listed in the
- standard.) */
- _REG_BADPAT, /* Invalid pattern. */
- _REG_ECOLLATE, /* Invalid collating element. */
- _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. */
-
- /* 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_errcode_t;
-
-#ifdef _XOPEN_SOURCE
-# 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
-#define REG_ERPAREN _REG_ERPAREN
-
-/* struct re_pattern_buffer normally uses member names like `buffer'
- that POSIX does not allow. In POSIX mode these members have names
- with leading `re_' (e.g., `re_buffer'). */
-#ifdef __USE_GNU_REGEX
-# 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 RE_TRANSLATE_TYPE, which defaults to unsigned
- char *. This pollutes the POSIX name space, so in POSIX mode just
- use unsigned char *. */
-#ifdef __USE_GNU_REGEX
-# ifndef RE_TRANSLATE_TYPE
-# define RE_TRANSLATE_TYPE unsigned char *
-# endif
-# define REG_TRANSLATE_TYPE RE_TRANSLATE_TYPE
-#else
-# define REG_TRANSLATE_TYPE unsigned char *
-#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
- compiled, the `re_nsub' field is available. All other fields are
- private to the regex routines. */
-
-struct re_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);
-
- /* Number of bytes to which `buffer' points. */
- __re_long_size_t _REG_RE_NAME (allocated);
-
- /* Number of bytes actually used in `buffer'. */
- __re_long_size_t _REG_RE_NAME (used);
-
- /* Syntax setting with which the pattern was compiled. */
- 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 *_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. */
- REG_TRANSLATE_TYPE _REG_RE_NAME (translate);
-
- /* 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 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_REGEX
-# define REGS_UNALLOCATED 0
-# define REGS_REALLOCATE 1
-# define REGS_FIXED 2
-#endif
- 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]]] */
-};
-
-typedef struct re_pattern_buffer regex_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
-{
- __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,
- `re_match_2' returns information about at least this many registers
- the first time a `regs' structure is passed. */
-#if !defined RE_NREGS && defined __USE_GNU_REGEX
-# define RE_NREGS 30
-#endif
-
-
-/* POSIX specification for registers. Aside from the different names than
- `re_registers', POSIX uses an array of structures, instead of a
- structure of arrays. */
-typedef struct
-{
- regoff_t rm_so; /* Byte offset from string's start to substring's start. */
- regoff_t rm_eo; /* Byte offset from string's start to substring's end. */
-} regmatch_t;
-
-/* Declarations for routines. */
-
-/* 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 (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 (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 (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 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 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 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 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
- (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
- freeing the old data. */
-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 (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. */
-#ifndef __restrict_arr
-# if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) \
- && !defined __GNUG__
-# define __restrict_arr __restrict
-# else
-# define __restrict_arr
-# endif
-#endif
-
-/* POSIX compatibility. */
-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 __cplusplus
-}
-#endif /* C++ */
-
-#endif /* regex.h */