From 638a1efd86f1b49822e66e02cb006fc63693098e Mon Sep 17 00:00:00 2001
From: Mark Olesen <Mark.Olesen@esi-group.com>
Date: Thu, 14 Mar 2019 13:24:23 +0100
Subject: [PATCH] ENH: reorganize regular expressions and add C++11 regex
support
- new regExpCxx wrapper for C++11 regex support with drop-in
compatibility with existing code.
- regExpPosix (was regExp), for future phase out in favour of regExpCxx.
- The regExp header will continue to be used for defining an
appropriate typedef corresponding to the preferred implementation.
---
applications/test/regex/Make/files | 3 -
applications/test/regex1/Make/files | 3 +
.../test/{regex => regex1}/Make/options | 0
.../Test-regex.C => regex1/Test-regex1.C} | 243 ++++++++++++------
.../test/{regex => regex1}/testRegexps | 0
src/OSspecific/POSIX/Make/files | 2 +-
src/OSspecific/POSIX/regExp.H | 169 +-----------
src/OSspecific/POSIX/regExpFwd.H | 49 ++++
.../POSIX/{regExp.C => regExpPosix.C} | 24 +-
src/OSspecific/POSIX/regExpPosix.H | 204 +++++++++++++++
.../POSIX/{regExpI.H => regExpPosixI.H} | 34 +--
src/OpenFOAM/Make/files | 1 +
src/OpenFOAM/db/dictionary/dictionary.H | 12 +-
src/OpenFOAM/db/dictionary/dictionarySearch.C | 12 +-
.../primitives/strings/regex/regExpCxx.C | 207 +++++++++++++++
.../primitives/strings/regex/regExpCxx.H | 219 ++++++++++++++++
.../primitives/strings/regex/regExpCxxI.H | 228 ++++++++++++++++
17 files changed, 1125 insertions(+), 285 deletions(-)
delete mode 100644 applications/test/regex/Make/files
create mode 100644 applications/test/regex1/Make/files
rename applications/test/{regex => regex1}/Make/options (100%)
rename applications/test/{regex/Test-regex.C => regex1/Test-regex1.C} (70%)
rename applications/test/{regex => regex1}/testRegexps (100%)
create mode 100644 src/OSspecific/POSIX/regExpFwd.H
rename src/OSspecific/POSIX/{regExp.C => regExpPosix.C} (90%)
create mode 100644 src/OSspecific/POSIX/regExpPosix.H
rename src/OSspecific/POSIX/{regExpI.H => regExpPosixI.H} (72%)
create mode 100644 src/OpenFOAM/primitives/strings/regex/regExpCxx.C
create mode 100644 src/OpenFOAM/primitives/strings/regex/regExpCxx.H
create mode 100644 src/OpenFOAM/primitives/strings/regex/regExpCxxI.H
diff --git a/applications/test/regex/Make/files b/applications/test/regex/Make/files
deleted file mode 100644
index 28fa008d1f..0000000000
--- a/applications/test/regex/Make/files
+++ /dev/null
@@ -1,3 +0,0 @@
-Test-regex.C
-
-EXE = $(FOAM_USER_APPBIN)/Test-regex
diff --git a/applications/test/regex1/Make/files b/applications/test/regex1/Make/files
new file mode 100644
index 0000000000..8484667641
--- /dev/null
+++ b/applications/test/regex1/Make/files
@@ -0,0 +1,3 @@
+Test-regex1.C
+
+EXE = $(FOAM_USER_APPBIN)/Test-regex1
diff --git a/applications/test/regex/Make/options b/applications/test/regex1/Make/options
similarity index 100%
rename from applications/test/regex/Make/options
rename to applications/test/regex1/Make/options
diff --git a/applications/test/regex/Test-regex.C b/applications/test/regex1/Test-regex1.C
similarity index 70%
rename from applications/test/regex/Test-regex.C
rename to applications/test/regex1/Test-regex1.C
index 29ed6766b2..ca5bfb60cd 100644
--- a/applications/test/regex/Test-regex.C
+++ b/applications/test/regex1/Test-regex1.C
@@ -2,10 +2,8 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
- \\ / A nd | Copyright (C) 2004-2010, 2017-2018 OpenCFD Ltd.
+ \\ / A nd | Copyright (C) 2017-2019 OpenCFD Ltd.
\\/ M anipulation |
--------------------------------------------------------------------------------
- | Copyright (C) 2011-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@@ -28,13 +26,14 @@ Description
\*---------------------------------------------------------------------------*/
+#include "argList.H"
#include "IOstreams.H"
-#include "IOobject.H"
#include "IFstream.H"
-#include "regExp.H"
-#include "SubStrings.H"
#include "Switch.H"
+#include "regExpCxx.H"
+#include "regExpPosix.H"
+
using namespace Foam;
@@ -63,14 +62,16 @@ struct regexTest
}
};
+
// Needed for list output. Just treat everything as unequal.
bool operator!=(const struct regexTest&, const struct regexTest&)
{
return true;
}
+
// Simple output of match groups
-static Ostream& operator<<(Ostream& os, const regExp::results_type& sm)
+static Ostream& operator<<(Ostream& os, const regExpCxx::results_type& sm)
{
for (std::smatch::size_type i = 1; i < sm.size(); ++i)
{
@@ -81,83 +82,31 @@ static Ostream& operator<<(Ostream& os, const regExp::results_type& sm)
}
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-// Main program:
-
-int main(int argc, char *argv[])
+// Simple output of match groups
+static Ostream& operator<<(Ostream& os, const regExpPosix::results_type& sm)
{
- List<regexTest> rawList(IFstream("testRegexps")());
- Info<< "Test expressions:" << rawList << endl;
- IOobject::writeDivider(Info) << endl;
-
- regExp::results_type match;
-
- // Expect some failures:
- const bool throwingError = FatalError.throwExceptions();
-
- // Report matches:
- for (const auto& testseq : rawList)
+ for (std::smatch::size_type i = 1; i < sm.size(); ++i)
{
- const bool expected = testseq.expected;
- const string& pat = testseq.pattern;
- const string& str = testseq.text;
-
- Info<< "Test " << Switch(expected) << ": "
- << str << " =~ m/" << pat.c_str() << "/ == ";
-
- regExp re;
-
- try
- {
- re = pat;
-
- if (re.match(str, match))
- {
- Info<< "true";
- if (re.ngroups())
- {
- Info<< " (" << re.ngroups() << " groups):" << match;
- }
- }
- else if (re.search(str))
- {
- Info<< "partial match";
- }
- else
- {
- Info<< "false";
- }
- Info<< endl;
- }
- catch (const Foam::error& err)
- {
- Info<< "Caught FatalError " << err << nl << endl;
- continue;
- }
-
- if (false)
- {
- regExp re2(std::move(re));
- Info<<"move construct: " << re.exists() << "/" << re2.exists()
- << endl;
+ os << " " << sm.str(i);
+ }
- re = std::move(re2);
- Info<<"move assign: " << re.exists() << "/" << re2.exists()
- << endl;
+ return os;
+}
- re.swap(re2);
- Info<<"swap: " << re.exists() << "/" << re2.exists()
- << endl;
- }
- }
+template<class RegexType>
+void generalTests()
+{
Info<< nl << "test regExp(const char*) ..." << endl;
string me("Mark");
+ // Expect some failures:
+ const bool throwingError = FatalError.throwExceptions();
+
try
{
// Handling of null strings
- if (regExp(nullptr).match(me))
+ if (RegexType(nullptr).match(me))
{
Info<< "fail - matched: " << me << endl;
}
@@ -174,7 +123,7 @@ int main(int argc, char *argv[])
try
{
// Normal match
- if (regExp("[Mm]ar[ck]").match(me))
+ if (RegexType("[Mm]ar[ck]").match(me))
{
Info<< "pass - matched: " << me << endl;
}
@@ -191,7 +140,7 @@ int main(int argc, char *argv[])
try
{
// Match ignore case
- if (regExp("mar[ck]", true).match(me))
+ if (RegexType("mar[ck]", true).match(me))
{
Info<< "pass - matched: " << me << endl;
}
@@ -208,7 +157,7 @@ int main(int argc, char *argv[])
try
{
// Embedded prefix for match ignore case
- if (regExp("(?i)mar[ck]").match(me))
+ if (RegexType("(?i)mar[ck]").match(me))
{
Info<< "pass - matched: " << me << endl;
}
@@ -225,7 +174,7 @@ int main(int argc, char *argv[])
try
{
// Handling of empty expression
- if (regExp("").match(me))
+ if (RegexType("").match(me))
{
Info<< "fail - matched: " << me << endl;
}
@@ -242,7 +191,7 @@ int main(int argc, char *argv[])
try
{
// Embedded prefix - but expression is empty
- if (regExp("(?i)").match(me))
+ if (RegexType("(?i)").match(me))
{
Info<< "fail - matched: " << me << endl;
}
@@ -257,6 +206,144 @@ int main(int argc, char *argv[])
}
FatalError.throwExceptions(throwingError);
+}
+
+
+
+template<class RegexType>
+void testExpressions(const UList<regexTest>& tests)
+{
+ typename RegexType::results_type match;
+
+ // Expect some failures:
+ const bool throwingError = FatalError.throwExceptions();
+
+ // Report matches:
+ for (const auto& testseq : tests)
+ {
+ const bool expected = testseq.expected;
+ const string& pat = testseq.pattern;
+ const string& str = testseq.text;
+
+ Info<< "Test " << Switch(expected) << ": "
+ << str << " =~ m/" << pat.c_str() << "/ == ";
+
+ RegexType re;
+
+ try
+ {
+ re = pat;
+
+ if (re.match(str, match))
+ {
+ Info<< "true";
+ if (re.ngroups())
+ {
+ Info<< " (" << re.ngroups() << " groups):" << match;
+ }
+ }
+ else if (re.search(str))
+ {
+ Info<< "partial match";
+ }
+ else
+ {
+ Info<< "false";
+ }
+ Info<< endl;
+ }
+ catch (const Foam::error& err)
+ {
+ Info<< "Caught FatalError " << err << nl << endl;
+ continue;
+ }
+
+ if (false)
+ {
+ RegexType re2(std::move(re));
+ Info<<"move construct: " << re.exists() << "/" << re2.exists()
+ << endl;
+
+ re = std::move(re2);
+ Info<<"move assign: " << re.exists() << "/" << re2.exists()
+ << endl;
+
+ re.swap(re2);
+ Info<<"swap: " << re.exists() << "/" << re2.exists()
+ << endl;
+ }
+ }
+
+ FatalError.throwExceptions(throwingError);
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+// Main program:
+
+int main(int argc, char *argv[])
+{
+ argList::noBanner();
+ argList::noFunctionObjects();
+ argList::noParallel();
+
+ argList::addBoolOption
+ (
+ "cxx",
+ "Test C++11 regular expressions"
+ );
+
+ argList::addBoolOption
+ (
+ "posix",
+ "Test POSIX regular expressions"
+ );
+
+ argList::addArgument("file");
+ argList::addArgument("...");
+ argList::addArgument("fileN");
+ argList::noMandatoryArgs();
+
+ #include "setRootCase.H"
+
+ if (!args.count({"cxx", "posix"}))
+ {
+ Info<< "Specified one or more of -cxx, -posix" << nl;
+ return 1;
+ }
+
+ if (args.size() < 2)
+ {
+ Info<< "No test files specified .. restrict to general tests" << nl;
+
+ if (args.found("cxx"))
+ {
+ generalTests<regExpCxx>();
+ }
+
+ if (args.found("posix"))
+ {
+ generalTests<regExpPosix>();
+ }
+ }
+
+ for (label argi = 1; argi < args.size(); ++argi)
+ {
+ List<regexTest> tests(IFstream(args[argi])());
+
+ Info<< "Test expressions:" << tests << endl;
+ IOobject::writeDivider(Info) << endl;
+
+ if (args.found("cxx"))
+ {
+ testExpressions<regExpCxx>(tests);
+ }
+
+ if (args.found("posix"))
+ {
+ testExpressions<regExpPosix>(tests);
+ }
+ }
Info<< "\nDone" << nl << endl;
diff --git a/applications/test/regex/testRegexps b/applications/test/regex1/testRegexps
similarity index 100%
rename from applications/test/regex/testRegexps
rename to applications/test/regex1/testRegexps
diff --git a/src/OSspecific/POSIX/Make/files b/src/OSspecific/POSIX/Make/files
index 6263ba8481..26e735cb88 100644
--- a/src/OSspecific/POSIX/Make/files
+++ b/src/OSspecific/POSIX/Make/files
@@ -4,7 +4,7 @@ signals/sigInt.C
signals/sigQuit.C
signals/sigStopAtWriteNow.C
signals/sigWriteNow.C
-regExp.C
+regExpPosix.C
timer.C
fileStat.C
POSIX.C
diff --git a/src/OSspecific/POSIX/regExp.H b/src/OSspecific/POSIX/regExp.H
index dabd3d9a40..eee48c78d8 100644
--- a/src/OSspecific/POSIX/regExp.H
+++ b/src/OSspecific/POSIX/regExp.H
@@ -2,10 +2,8 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
- \\ / A nd | Copyright (C) 2004-2011, 2017-2018 OpenCFD Ltd.
+ \\ / A nd | Copyright (C) 2019 OpenCFD Ltd.
\\/ M anipulation |
--------------------------------------------------------------------------------
- | Copyright (C) 2011-2017 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@@ -23,176 +21,19 @@ License
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
-Class
+Typedef
Foam::regExp
Description
- Wrapper around POSIX extended regular expressions.
-
- The PCRE '(?i)' extension is provided to compile the regular expression
- as being case-insensitive.
-
-See also
- The manpage regex(7) for more information about POSIX regular expressions.
- These differ somewhat from \c Perl and \c sed regular expressions.
-
-SourceFiles
- regExpI.H
- regExp.C
+ Selection of preferred regular expression implementation
\*---------------------------------------------------------------------------*/
#ifndef regExp_H
#define regExp_H
-#include <regex.h>
-#include <string>
-
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-namespace Foam
-{
-
-// Forward declarations
-template<class String> class SubStrings;
-
-
-/*---------------------------------------------------------------------------*\
- Class regExp Declaration
-\*---------------------------------------------------------------------------*/
-
-class regExp
-{
- // Private data
-
- //- Precompiled regular expression
- regex_t* preg_;
-
-public:
-
- //- Type for matches
- typedef SubStrings<std::string> results_type;
-
-
- // Static Member Functions
-
- //- Test if character appears to be a regular expression meta-character
- // \return true if character is one of the following:
- // - any character: '.' \n
- // - quantifiers: '*', '+', '?' \n
- // - grouping: '(', '|', ')' \n
- // - range: '[', ']' \n
- //
- // \note The presence of '{', '}' regex bounds is not considered
- inline static bool meta(char c);
-
-
- // Constructors
-
- //- Construct null
- inline regExp();
-
- //- Copy construct - disallowed
- regExp(const regExp&) = delete;
-
- //- Move construct
- inline regExp(regExp&& rgx);
-
- //- Construct from character array
- inline explicit regExp(const char* pattern);
-
- //- Construct from string
- inline explicit regExp(const std::string& pattern);
-
- //- Construct from character array, optionally ignore case
- inline regExp(const char* pattern, bool ignoreCase);
-
- //- Construct from string, optionally ignore case
- inline regExp(const std::string& pattern, bool ignoreCase);
-
-
- //- Destructor
- inline ~regExp();
-
-
- // Member functions
-
- // Access
-
- //- Return true if a precompiled expression does not exist
- inline bool empty() const;
-
- //- Return true if a precompiled expression exists
- inline bool exists() const;
-
- //- The number of capture groups for a non-empty expression
- inline unsigned ngroups() const;
-
- // Editing
-
- //- Clear expression.
- // \return True if expression had existed prior to the clear.
- bool clear();
-
- //- Swap contents
- inline void swap(regExp& rgx);
-
- //- Compile pattern into a regular expression, optionally ignore case.
- // \return True if the pattern was compiled
- bool set(const char* pattern, bool ignoreCase=false);
-
- //- Compile pattern into a regular expression, optionally ignore case.
- // \return True if the pattern was compiled
- bool set(const std::string& pattern, bool ignoreCase=false);
-
- // Matching/Searching
-
- //- Find position within the text.
- // \return The index where it begins or string::npos if not found
- std::string::size_type find(const std::string& text) const;
-
- //- True if the regex matches the entire text.
- // The begin-of-line (^) and end-of-line ($) anchors are implicit
- bool match(const std::string& text) const;
-
- //- True if the regex matches the text, set the matches.
- // The first group starts at index 1 (0 is the entire match).
- // The begin-of-line (^) and end-of-line ($) anchors are implicit
- bool match(const std::string& text, results_type& matches) const;
-
- //- Return true if the regex was found within the text
- inline bool search(const std::string& text) const;
-
-
- // Member Operators
-
- //- Perform match on text
- inline bool operator()(const std::string& text) const;
-
- //- Copy assignment - disallowed
- void operator=(const regExp&) = delete;
-
- //- Move assignment
- inline void operator=(regExp&& rgx);
-
- //- Assign and compile pattern from a character array.
- // Matching is case sensitive.
- inline void operator=(const char* pattern);
-
- //- Assign and compile pattern from string.
- // Matching is case sensitive.
- inline void operator=(const std::string& pattern);
-
-};
-
-
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-} // End namespace Foam
-
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-#include "regExpI.H"
+#include "regExpPosix.H"
+#include "regExpFwd.H"
#endif
diff --git a/src/OSspecific/POSIX/regExpFwd.H b/src/OSspecific/POSIX/regExpFwd.H
new file mode 100644
index 0000000000..47e8c268cf
--- /dev/null
+++ b/src/OSspecific/POSIX/regExpFwd.H
@@ -0,0 +1,49 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 2019 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM 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 3 of the License, or
+ (at your option) any later version.
+
+ OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
+
+Typedef
+ Foam::regExp
+
+Description
+ Selection of preferred regular expression implementation
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef regExpFwd_H
+#define regExpFwd_H
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+ class regExpCxx;
+ class regExpPosix;
+
+ typedef regExpPosix regExp;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/OSspecific/POSIX/regExp.C b/src/OSspecific/POSIX/regExpPosix.C
similarity index 90%
rename from src/OSspecific/POSIX/regExp.C
rename to src/OSspecific/POSIX/regExpPosix.C
index df661e2615..c6c1b40a92 100644
--- a/src/OSspecific/POSIX/regExp.C
+++ b/src/OSspecific/POSIX/regExpPosix.C
@@ -25,22 +25,32 @@ License
\*---------------------------------------------------------------------------*/
-#include "regExp.H"
+#include "regExpPosix.H"
#include "SubStrings.H"
#include "error.H"
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+int Foam::regExpPosix::grammar(0);
+
+
// * * * * * * * * * * * * * * * Local Functions * * * * * * * * * * * * * * //
+namespace
+{
+
// Verify that the entire len was matched
static inline bool fullMatch(const regmatch_t& m, const regoff_t len)
{
return (m.rm_so == 0 && m.rm_eo == len);
}
+} // End anonymous namespace
+
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
-bool Foam::regExp::clear()
+bool Foam::regExpPosix::clear()
{
if (preg_)
{
@@ -55,7 +65,7 @@ bool Foam::regExp::clear()
}
-bool Foam::regExp::set(const char* pattern, bool ignoreCase)
+bool Foam::regExpPosix::set(const char* pattern, bool ignoreCase)
{
clear();
@@ -106,13 +116,13 @@ bool Foam::regExp::set(const char* pattern, bool ignoreCase)
}
-bool Foam::regExp::set(const std::string& pattern, bool ignoreCase)
+bool Foam::regExpPosix::set(const std::string& pattern, bool ignoreCase)
{
return set(pattern.c_str(), ignoreCase);
}
-std::string::size_type Foam::regExp::find(const std::string& text) const
+std::string::size_type Foam::regExpPosix::find(const std::string& text) const
{
if (preg_ && !text.empty())
{
@@ -129,7 +139,7 @@ std::string::size_type Foam::regExp::find(const std::string& text) const
}
-bool Foam::regExp::match(const std::string& text) const
+bool Foam::regExpPosix::match(const std::string& text) const
{
const auto len = text.size();
@@ -151,7 +161,7 @@ bool Foam::regExp::match(const std::string& text) const
}
-bool Foam::regExp::match
+bool Foam::regExpPosix::match
(
const std::string& text,
SubStrings<std::string>& matches
diff --git a/src/OSspecific/POSIX/regExpPosix.H b/src/OSspecific/POSIX/regExpPosix.H
new file mode 100644
index 0000000000..dbed07a4dc
--- /dev/null
+++ b/src/OSspecific/POSIX/regExpPosix.H
@@ -0,0 +1,204 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 2004-2011, 2017-2018 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+ | Copyright (C) 2011-2017 OpenFOAM Foundation
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM 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 3 of the License, or
+ (at your option) any later version.
+
+ OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
+
+Class
+ Foam::regExpPosix
+
+Description
+ Wrapper around POSIX extended regular expressions.
+
+ The PCRE '(?i)' extension is provided to compile the regular expression
+ as being case-insensitive.
+
+See also
+ The manpage regex(7) for more information about POSIX regular expressions.
+ These differ somewhat from \c Perl and \c sed regular expressions.
+
+SourceFiles
+ regExpPosixI.H
+ regExpPosix.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef regExpPosix_H
+#define regExpPosix_H
+
+#include <regex.h>
+#include <string>
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// Forward Declarations
+template<class String> class SubStrings;
+
+
+/*---------------------------------------------------------------------------*\
+ Class regExpPosix Declaration
+\*---------------------------------------------------------------------------*/
+
+class regExpPosix
+{
+ // Private Data
+
+ //- Precompiled regular expression
+ regex_t* preg_;
+
+public:
+
+ //- Type for matches
+ typedef SubStrings<std::string> results_type;
+
+ // Static Member Data
+
+ //- The default grammar (unused) - for future-compatibility
+ static int grammar;
+
+
+ // Static Member Functions
+
+ //- Test if character appears to be a regular expression meta-character
+ // \return true if character is one of the following:
+ // - any character: '.' \n
+ // - quantifiers: '*', '+', '?' \n
+ // - grouping: '(', '|', ')' \n
+ // - range: '[', ']' \n
+ //
+ // \note The presence of '{', '}' regex bounds is not considered
+ inline static bool meta(char c);
+
+
+ // Constructors
+
+ //- Construct null
+ inline regExpPosix();
+
+ //- Copy construct - disallowed
+ regExpPosix(const regExpPosix&) = delete;
+
+ //- Move construct
+ inline regExpPosix(regExpPosix&& rgx);
+
+ //- Construct from character array
+ inline explicit regExpPosix(const char* pattern);
+
+ //- Construct from string
+ inline explicit regExpPosix(const std::string& pattern);
+
+ //- Construct from character array, optionally ignore case
+ inline regExpPosix(const char* pattern, bool ignoreCase);
+
+ //- Construct from string, optionally ignore case
+ inline regExpPosix(const std::string& pattern, bool ignoreCase);
+
+
+ //- Destructor
+ inline ~regExpPosix();
+
+
+ // Member functions
+
+ // Access
+
+ //- Return true if a precompiled expression does not exist
+ inline bool empty() const;
+
+ //- Return true if a precompiled expression exists
+ inline bool exists() const;
+
+ //- The number of capture groups for a non-empty expression
+ inline unsigned ngroups() const;
+
+ // Editing
+
+ //- Clear expression.
+ // \return True if expression had existed prior to the clear.
+ bool clear();
+
+ //- Swap contents
+ inline void swap(regExpPosix& rgx);
+
+ //- Compile pattern into a regular expression, optionally ignore case.
+ // \return True if the pattern was compiled
+ bool set(const char* pattern, bool ignoreCase=false);
+
+ //- Compile pattern into a regular expression, optionally ignore case.
+ // \return True if the pattern was compiled
+ bool set(const std::string& pattern, bool ignoreCase=false);
+
+ // Matching/Searching
+
+ //- Find position within the text.
+ // \return The index where it begins or string::npos if not found
+ std::string::size_type find(const std::string& text) const;
+
+ //- True if the regex matches the entire text.
+ // The begin-of-line (^) and end-of-line ($) anchors are implicit
+ bool match(const std::string& text) const;
+
+ //- True if the regex matches the text, set the matches.
+ // The first group starts at index 1 (0 is the entire match).
+ // The begin-of-line (^) and end-of-line ($) anchors are implicit
+ bool match(const std::string& text, results_type& matches) const;
+
+ //- Return true if the regex was found within the text
+ inline bool search(const std::string& text) const;
+
+
+ // Member Operators
+
+ //- Perform match on text
+ inline bool operator()(const std::string& text) const;
+
+ //- Copy assignment - disallowed
+ void operator=(const regExpPosix&) = delete;
+
+ //- Move assignment
+ inline void operator=(regExpPosix&& rgx);
+
+ //- Assign and compile pattern from a character array.
+ // Matching is case sensitive.
+ inline void operator=(const char* pattern);
+
+ //- Assign and compile pattern from string.
+ // Matching is case sensitive.
+ inline void operator=(const std::string& pattern);
+
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#include "regExpPosixI.H"
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/OSspecific/POSIX/regExpI.H b/src/OSspecific/POSIX/regExpPosixI.H
similarity index 72%
rename from src/OSspecific/POSIX/regExpI.H
rename to src/OSspecific/POSIX/regExpPosixI.H
index 48d3beb36c..75f8482506 100644
--- a/src/OSspecific/POSIX/regExpI.H
+++ b/src/OSspecific/POSIX/regExpPosixI.H
@@ -28,7 +28,7 @@ License
// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
-inline bool Foam::regExp::meta(char c)
+inline bool Foam::regExpPosix::meta(char c)
{
return
(
@@ -42,13 +42,13 @@ inline bool Foam::regExp::meta(char c)
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
-inline Foam::regExp::regExp()
+inline Foam::regExpPosix::regExpPosix()
:
preg_(nullptr)
{}
-inline Foam::regExp::regExp(const char* pattern)
+inline Foam::regExpPosix::regExpPosix(const char* pattern)
:
preg_(nullptr)
{
@@ -56,7 +56,7 @@ inline Foam::regExp::regExp(const char* pattern)
}
-inline Foam::regExp::regExp(const std::string& pattern)
+inline Foam::regExpPosix::regExpPosix(const std::string& pattern)
:
preg_(nullptr)
{
@@ -64,7 +64,7 @@ inline Foam::regExp::regExp(const std::string& pattern)
}
-inline Foam::regExp::regExp(const char* pattern, bool ignoreCase)
+inline Foam::regExpPosix::regExpPosix(const char* pattern, bool ignoreCase)
:
preg_(nullptr)
{
@@ -72,7 +72,7 @@ inline Foam::regExp::regExp(const char* pattern, bool ignoreCase)
}
-inline Foam::regExp::regExp(const std::string& pattern, bool ignoreCase)
+inline Foam::regExpPosix::regExpPosix(const std::string& pattern, bool ignoreCase)
:
preg_(nullptr)
{
@@ -80,7 +80,7 @@ inline Foam::regExp::regExp(const std::string& pattern, bool ignoreCase)
}
-inline Foam::regExp::regExp(regExp&& rgx)
+inline Foam::regExpPosix::regExpPosix(regExpPosix&& rgx)
:
preg_(rgx.preg_)
{
@@ -90,7 +90,7 @@ inline Foam::regExp::regExp(regExp&& rgx)
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
-inline Foam::regExp::~regExp()
+inline Foam::regExpPosix::~regExpPosix()
{
clear();
}
@@ -98,31 +98,31 @@ inline Foam::regExp::~regExp()
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
-inline bool Foam::regExp::empty() const
+inline bool Foam::regExpPosix::empty() const
{
return !preg_;
}
-inline bool Foam::regExp::exists() const
+inline bool Foam::regExpPosix::exists() const
{
return preg_ ? true : false;
}
-inline unsigned Foam::regExp::ngroups() const
+inline unsigned Foam::regExpPosix::ngroups() const
{
return preg_ ? preg_->re_nsub : 0;
}
-inline bool Foam::regExp::search(const std::string& text) const
+inline bool Foam::regExpPosix::search(const std::string& text) const
{
return std::string::npos != find(text);
}
-inline void Foam::regExp::swap(regExp& rgx)
+inline void Foam::regExpPosix::swap(regExpPosix& rgx)
{
std::swap(preg_, rgx.preg_);
}
@@ -130,26 +130,26 @@ inline void Foam::regExp::swap(regExp& rgx)
// * * * * * * * * * * * * * * Member Operators * * * * * * * * * * * * * * //
-inline bool Foam::regExp::operator()(const std::string& text) const
+inline bool Foam::regExpPosix::operator()(const std::string& text) const
{
return match(text);
}
-inline void Foam::regExp::operator=(regExp&& rgx)
+inline void Foam::regExpPosix::operator=(regExpPosix&& rgx)
{
clear();
swap(rgx);
}
-inline void Foam::regExp::operator=(const char* pattern)
+inline void Foam::regExpPosix::operator=(const char* pattern)
{
set(pattern);
}
-inline void Foam::regExp::operator=(const std::string& pattern)
+inline void Foam::regExpPosix::operator=(const std::string& pattern)
{
set(pattern);
}
diff --git a/src/OpenFOAM/Make/files b/src/OpenFOAM/Make/files
index 978beb40fb..54c3b2a19a 100644
--- a/src/OpenFOAM/Make/files
+++ b/src/OpenFOAM/Make/files
@@ -120,6 +120,7 @@ $(strings)/word/wordIOList.C
$(strings)/fileName/fileName.C
$(strings)/fileName/fileNameIO.C
$(strings)/keyType/keyType.C
+$(strings)/regex/regExpCxx.C
$(strings)/wordRe/wordRe.C
$(strings)/wordRes/wordRes.C
$(strings)/lists/CStringList.C
diff --git a/src/OpenFOAM/db/dictionary/dictionary.H b/src/OpenFOAM/db/dictionary/dictionary.H
index 3a4d2c9be0..b86be7adc8 100644
--- a/src/OpenFOAM/db/dictionary/dictionary.H
+++ b/src/OpenFOAM/db/dictionary/dictionary.H
@@ -100,14 +100,14 @@ SeeAlso
// Some common data types
#include "label.H"
#include "scalar.H"
+#include "regExpFwd.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
-// Forward declarations
-class regExp;
+// Forward Declarations
class dictionary;
class SHA1Digest;
@@ -282,7 +282,7 @@ public:
private:
- // Private data
+ // Private Data
//- Report optional keywords and values if not present in dictionary
// Set/unset via an InfoSwitch
@@ -309,12 +309,6 @@ private:
//- The storage container
typedef IDLList<entry> parent_type;
- typedef DLList<entry*>::iterator pattern_iterator;
- typedef DLList<entry*>::const_iterator pattern_const_iterator;
-
- typedef DLList<autoPtr<regExp>>::iterator regexp_iterator;
- typedef DLList<autoPtr<regExp>>::const_iterator regexp_const_iterator;
-
// Private Member Functions
diff --git a/src/OpenFOAM/db/dictionary/dictionarySearch.C b/src/OpenFOAM/db/dictionary/dictionarySearch.C
index 56460f28dd..d3fcee91c4 100644
--- a/src/OpenFOAM/db/dictionary/dictionarySearch.C
+++ b/src/OpenFOAM/db/dictionary/dictionarySearch.C
@@ -277,8 +277,8 @@ Foam::dictionary::const_searcher Foam::dictionary::csearch
if ((matchOpt & keyType::REGEX) && patterns_.size())
{
- pattern_const_iterator wcLink = patterns_.begin();
- regexp_const_iterator reLink = regexps_.begin();
+ auto wcLink = patterns_.cbegin();
+ auto reLink = regexps_.cbegin();
// Find in patterns using regular expressions only
if (findInPatterns(true, keyword, wcLink, reLink))
@@ -584,8 +584,8 @@ bool Foam::dictionary::remove(const word& keyword)
if (iter.found())
{
// Delete from patterns
- pattern_iterator wcLink = patterns_.begin();
- regexp_iterator reLink = regexps_.begin();
+ auto wcLink = patterns_.begin();
+ auto reLink = regexps_.begin();
// Find in pattern using exact match only
if (findInPatterns(false, keyword, wcLink, reLink))
@@ -645,8 +645,8 @@ bool Foam::dictionary::changeKeyword
if (iter2()->keyword().isPattern())
{
// Delete from patterns
- pattern_iterator wcLink = patterns_.begin();
- regexp_iterator reLink = regexps_.begin();
+ auto wcLink = patterns_.begin();
+ auto reLink = regexps_.begin();
// Find in patterns using exact match only
if (findInPatterns(false, iter2()->keyword(), wcLink, reLink))
diff --git a/src/OpenFOAM/primitives/strings/regex/regExpCxx.C b/src/OpenFOAM/primitives/strings/regex/regExpCxx.C
new file mode 100644
index 0000000000..0f99c82dc1
--- /dev/null
+++ b/src/OpenFOAM/primitives/strings/regex/regExpCxx.C
@@ -0,0 +1,207 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 2017-2019 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM 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 3 of the License, or
+ (at your option) any later version.
+
+ OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "regExpCxx.H"
+#include "debug.H"
+#include "error.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+int Foam::regExpCxx::grammar(Foam::debug::optimisationSwitch("regExpCxx", 0));
+
+
+// * * * * * * * * * * * * * * * Local Functions * * * * * * * * * * * * * * //
+
+namespace
+{
+
+static std::string error_string(const std::regex_error& err)
+{
+ switch (err.code())
+ {
+ case std::regex_constants::error_collate :
+ return "invalid collating element name";
+ break;
+
+ case std::regex_constants::error_ctype :
+ return "invalid character class name";
+ break;
+
+ case std::regex_constants::error_escape :
+ return "invalid escaped character or a trailing escape";
+ break;
+
+ case std::regex_constants::error_backref :
+ return "invalid back reference";
+ break;
+
+ case std::regex_constants::error_brack :
+ return "mismatched [ and ]";
+ break;
+
+ case std::regex_constants::error_paren :
+ return "mismatched ( and )";
+ break;
+
+ case std::regex_constants::error_brace :
+ return "mismatched { and }";
+ break;
+
+ case std::regex_constants::error_badbrace :
+ return "invalid range in a {..}";
+ break;
+
+ case std::regex_constants::error_range :
+ return "invalid [..] character range";
+ break;
+
+ case std::regex_constants::error_space :
+ return "memory error";
+ break;
+
+ case std::regex_constants::error_badrepeat :
+ return "bad '*?+{' repeat";
+ break;
+
+ case std::regex_constants::error_complexity :
+ return "expression too complex";
+ break;
+
+ case std::regex_constants::error_stack :
+ return "memory stack error";
+ break;
+
+ default:
+ break;
+
+ }
+
+ return "";
+}
+
+} // End anonymous namespace
+
+
+// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
+
+bool Foam::regExpCxx::set(const char* pattern, bool ignoreCase)
+{
+ clear();
+
+ size_t len = (pattern ? strlen(pattern) : 0);
+
+ // Avoid nullptr and zero-length patterns
+ if (!len)
+ {
+ return false;
+ }
+
+ std::regex::flag_type flags = syntax();
+ if (ignoreCase)
+ {
+ flags |= std::regex::icase;
+ }
+
+ const char* pat = pattern;
+
+ // Has embedded ignore-case prefix?
+ if (len >= 4 && !strncmp(pattern, "(?i)", 4))
+ {
+ flags |= std::regex::icase;
+ pat += 4;
+ len -= 4;
+ }
+
+ if (len)
+ {
+ try
+ {
+ re_.assign(pat, flags);
+ return true;
+ }
+ catch (const std::regex_error& err)
+ {
+ FatalErrorInFunction
+ << "Failed to compile regular expression '"
+ << pattern << "'" << nl
+ << err.what() << ": " << error_string(err).c_str() << nl
+ << exit(FatalError);
+ }
+ }
+
+ return false;
+}
+
+
+bool Foam::regExpCxx::set(const std::string& pattern, bool ignoreCase)
+{
+ clear();
+
+ auto len = pattern.size();
+
+ // Avoid zero-length patterns
+ if (!len)
+ {
+ return false;
+ }
+
+ std::regex::flag_type flags = syntax();
+ if (ignoreCase)
+ {
+ flags |= std::regex::icase;
+ }
+
+ auto pat = pattern.begin();
+
+ // Has embedded ignore-case prefix?
+ if (len >= 4 && !pattern.compare(0, 4, "(?i)"))
+ {
+ flags |= std::regex::icase;
+ pat += 4;
+ len -= 4;
+ }
+
+ if (len)
+ {
+ try
+ {
+ re_.assign(pat, pattern.end(), flags);
+ return true;
+ }
+ catch (const std::regex_error& err)
+ {
+ FatalErrorInFunction
+ << "Failed to compile regular expression '"
+ << pattern.c_str() << "'" << nl
+ << err.what() << ": " << error_string(err).c_str() << nl
+ << exit(FatalError);
+ }
+ }
+
+ return false;
+}
+
+
+// ************************************************************************* //
diff --git a/src/OpenFOAM/primitives/strings/regex/regExpCxx.H b/src/OpenFOAM/primitives/strings/regex/regExpCxx.H
new file mode 100644
index 0000000000..a96ad8e84a
--- /dev/null
+++ b/src/OpenFOAM/primitives/strings/regex/regExpCxx.H
@@ -0,0 +1,219 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 2017-2019 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM 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 3 of the License, or
+ (at your option) any later version.
+
+ OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
+
+Class
+ Foam::regExpCxx
+
+Description
+ Wrapper around C++11 regular expressions.
+
+ Using either POSIX extended regular expressions or
+ <a href=
+ "http://www.cplusplus.com/reference/regex/ECMAScript"
+ >modified ECMAScript regular expression grammar</a>
+
+ Since ECMAScript grammar may not work correctly on all installations,
+ the current default is to use extended regular expressions.
+
+ The JAVA/PCRE '(?i)' extension is supported as a prefix to compile the
+ regular expression as being case-insensitive.
+
+Note
+ The C++11 regular expressions may be broken on some compilers.
+ For example, gcc 4.8 is known to fail.
+ For these systems the POSIX implementation should be used.
+
+SourceFiles
+ regExpCxxI.H
+ regExpCxx.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef regExpCxx_H
+#define regExpCxx_H
+
+#include <regex>
+#include <string>
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+ Class regExpCxx Declaration
+\*---------------------------------------------------------------------------*/
+
+class regExpCxx
+{
+ // Private data
+
+ //- Regular expression (using char type)
+ std::regex re_;
+
+ //- Track if input pattern was OK - ie, has a length
+ bool ok_;
+
+ // Private Member Functions
+
+ //- Select grammar based on regExpCxx optimisationSwitch
+ // 0 = extended, 1 = ECMAScript
+ static inline std::regex::flag_type syntax();
+
+public:
+
+ //- Type for matches
+ typedef std::smatch results_type;
+
+ // Static Member Data
+
+ //- The default grammar (extended | ECMAScript).
+ static int grammar;
+
+
+ // Static Member Functions
+
+ //- Test if character appears to be a regular expression meta-character
+ // \return true if character is one of the following:
+ // - any character: '.' \n
+ // - quantifiers: '*', '+', '?' \n
+ // - grouping: '(', '|', ')' \n
+ // - range: '[', ']' \n
+ //
+ // \note The presence of '{', '}' regex bounds is not considered
+ inline static bool meta(const char c);
+
+
+ // Constructors
+
+ //- Construct null
+ inline regExpCxx();
+
+ //- Copy construct
+ inline regExpCxx(const regExpCxx& rgx);
+
+ //- Move construct
+ inline regExpCxx(regExpCxx&& rgx);
+
+ //- Construct from character array
+ inline explicit regExpCxx(const char* pattern);
+
+ //- Construct from string
+ inline explicit regExpCxx(const std::string& pattern);
+
+ //- Construct from character array, optionally ignore case
+ inline regExpCxx(const char* pattern, bool ignoreCase);
+
+ //- Construct from string, optionally ignore case
+ inline regExpCxx(const std::string& pattern, bool ignoreCase);
+
+
+ //- Destructor
+ ~regExpCxx() = default;
+
+
+ // Member functions
+
+ // Access
+
+ //- Return true if expression is empty
+ inline bool empty() const;
+
+ //- Return true if expression is non-empty
+ inline bool exists() const;
+
+ //- The number of capture groups for a non-empty expression
+ inline unsigned ngroups() const;
+
+ // \return True if the pattern was set with ignore-case.
+ inline bool nocase() const;
+
+ // Editing
+
+ //- Clear expression.
+ // \return True if expression had existed prior to the clear.
+ inline bool clear();
+
+ //- Swap contents
+ inline void swap(regExpCxx& rgx);
+
+ //- Compile pattern into a regular expression, optionally ignore case.
+ // \return True if the pattern was compiled
+ bool set(const char* pattern, bool ignoreCase=false);
+
+ //- Compile pattern into a regular expression, optionally ignore case.
+ // \return True if the pattern was compiled
+ bool set(const std::string& pattern, bool ignoreCase=false);
+
+ // Matching/Searching
+
+ //- Find position within the text.
+ // \return The index where it begins or string::npos if not found
+ inline std::string::size_type find(const std::string& text) const;
+
+ //- True if the regex matches the entire text.
+ // The begin-of-line (^) and end-of-line ($) anchors are implicit
+ inline bool match(const std::string& text) const;
+
+ //- True if the regex matches the text, set the matches.
+ // The first group starts at index 1 (0 is the entire match).
+ // The begin-of-line (^) and end-of-line ($) anchors are implicit
+ inline bool match(const std::string& text, results_type& matches) const;
+
+ //- Return true if the regex was found within the text
+ inline bool search(const std::string& text) const;
+
+
+ // Member Operators
+
+ //- Perform match on text
+ inline bool operator()(const std::string& text) const;
+
+ //- Copy assignment
+ inline void operator=(const regExpCxx& rgx);
+
+ //- Move assignment
+ inline void operator=(regExpCxx&& rgx);
+
+ //- Assign and compile pattern from a character array.
+ // Matching is case sensitive.
+ inline void operator=(const char* pattern);
+
+ //- Assign and compile pattern from string.
+ // Matching is case sensitive.
+ inline void operator=(const std::string& pattern);
+
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#include "regExpCxxI.H"
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/OpenFOAM/primitives/strings/regex/regExpCxxI.H b/src/OpenFOAM/primitives/strings/regex/regExpCxxI.H
new file mode 100644
index 0000000000..92d84a0037
--- /dev/null
+++ b/src/OpenFOAM/primitives/strings/regex/regExpCxxI.H
@@ -0,0 +1,228 @@
+/*---------------------------------------------------------------------------*\
+ ========= |
+ \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
+ \\ / O peration |
+ \\ / A nd | Copyright (C) 2017-2019 OpenCFD Ltd.
+ \\/ M anipulation |
+-------------------------------------------------------------------------------
+License
+ This file is part of OpenFOAM.
+
+ OpenFOAM 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 3 of the License, or
+ (at your option) any later version.
+
+ OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
+
+inline std::regex::flag_type Foam::regExpCxx::syntax()
+{
+ // 0 = extended, 1 = ECMAScript
+ return
+ (
+ regExpCxx::grammar
+ ? std::regex::ECMAScript
+ : std::regex::extended
+ );
+}
+
+
+inline bool Foam::regExpCxx::meta(const char c)
+{
+ return
+ (
+ (c == '.') // any character
+ || (c == '*' || c == '+' || c == '?') // quantifiers
+ || (c == '(' || c == ')' || c == '|') // grouping/branching
+ || (c == '[' || c == ']') // range
+ );
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
+
+inline Foam::regExpCxx::regExpCxx()
+:
+ re_(),
+ ok_(false)
+{}
+
+
+inline Foam::regExpCxx::regExpCxx(const regExpCxx& rgx)
+:
+ re_(rgx.re_),
+ ok_(rgx.ok_)
+{}
+
+
+inline Foam::regExpCxx::regExpCxx(regExpCxx&& rgx)
+:
+ re_(std::move(rgx.re_)),
+ ok_(rgx.ok_)
+{
+ rgx.ok_ = false;
+}
+
+
+inline Foam::regExpCxx::regExpCxx(const char* pattern)
+:
+ re_(),
+ ok_(false)
+{
+ set(pattern, false);
+}
+
+
+inline Foam::regExpCxx::regExpCxx(const std::string& pattern)
+:
+ re_(),
+ ok_(false)
+{
+ set(pattern, false);
+}
+
+
+inline Foam::regExpCxx::regExpCxx(const char* pattern, bool ignoreCase)
+:
+ re_(),
+ ok_(false)
+{
+ set(pattern, ignoreCase);
+}
+
+
+inline Foam::regExpCxx::regExpCxx(const std::string& pattern, bool ignoreCase)
+:
+ re_(),
+ ok_(false)
+{
+ set(pattern, ignoreCase);
+}
+
+
+// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
+
+inline bool Foam::regExpCxx::empty() const
+{
+ return !ok_;
+}
+
+
+inline bool Foam::regExpCxx::exists() const
+{
+ return ok_;
+}
+
+
+inline unsigned Foam::regExpCxx::ngroups() const
+{
+ return ok_ ? re_.mark_count() : 0;
+}
+
+
+inline bool Foam::regExpCxx::nocase() const
+{
+ return ok_ && ((re_.flags() & std::regex::icase) == std::regex::icase);
+}
+
+
+inline bool Foam::regExpCxx::clear()
+{
+ if (ok_)
+ {
+ re_.assign("");
+ ok_ = false;
+
+ return true;
+ }
+
+ return false;
+}
+
+
+inline void Foam::regExpCxx::swap(regExpCxx& rgx)
+{
+ re_.swap(rgx.re_);
+ std::swap(ok_, rgx.ok_);
+}
+
+
+inline std::string::size_type Foam::regExpCxx::find(const std::string& text) const
+{
+ std::smatch mat;
+ if (!text.empty() && std::regex_search(text, mat, re_))
+ {
+ return mat.position(0);
+ }
+
+ return std::string::npos;
+}
+
+
+inline bool Foam::regExpCxx::search(const std::string& text) const
+{
+ return (ok_ && !text.empty() && std::regex_search(text, re_));
+}
+
+
+inline bool Foam::regExpCxx::match(const std::string& text) const
+{
+ return (ok_ && !text.empty() && std::regex_match(text, re_));
+}
+
+
+inline bool Foam::regExpCxx::match
+(
+ const std::string& text,
+ std::smatch& matches
+) const
+{
+ return std::regex_match(text, matches, re_);
+}
+
+
+// * * * * * * * * * * * * * * Member Operators * * * * * * * * * * * * * * //
+
+inline bool Foam::regExpCxx::operator()(const std::string& text) const
+{
+ return match(text);
+}
+
+
+inline void Foam::regExpCxx::operator=(const regExpCxx& rgx)
+{
+ re_ = rgx.re_;
+ ok_ = rgx.ok_;
+}
+
+
+inline void Foam::regExpCxx::operator=(regExpCxx&& rgx)
+{
+ clear();
+ swap(rgx);
+}
+
+
+inline void Foam::regExpCxx::operator=(const char* pattern)
+{
+ set(pattern);
+}
+
+
+inline void Foam::regExpCxx::operator=(const std::string& pattern)
+{
+ set(pattern);
+}
+
+
+// ************************************************************************* //
--
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