/usr/include/sbuild/sbuild-regex.h is in libsbuild-dev 1.6.10-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* schroot 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.
*
* schroot 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, see
* <http://www.gnu.org/licenses/>.
*
*********************************************************************/
#ifndef SBUILD_REGEX_H
#define SBUILD_REGEX_H
#include <istream>
#include <ostream>
#include <string>
#include <sbuild/sbuild-config.h>
# ifdef HAVE_REGEX_REGEX
# include <regex>
# elif HAVE_TR1_REGEX
# include <tr1/regex.hpp>
namespace std {
using std::tr1::regex;
using std::tr1::regex_error;
using std::tr1::regex_match;
using std::tr1::regex_search;
}
# elif HAVE_BOOST_REGEX
# include <boost/regex.hpp>
namespace std {
using boost::regex;
using boost::regex_error;
using boost::regex_match;
using boost::regex_search;
}
# else
# error An regex implementation is not available
# endif
namespace sbuild
{
/**
* POSIX extended regular expression. Note that this extends the
* C++ std::regex type to provide the stream interface needed by the
* keyfile class. Not all methods are overloaded, so this is not
* safe enough to be generally usable. For example, it's possible
* to use non-overloaded assignment operators which will not update
* the stored string (which is required due to the C++ regex class
* not providing str() and compare() methods, while the Boost
* version does. This class provides these methods in order to be
* compatible with both the C++11 and Boost regex classes.
* Additionally, this class always uses extended regexes, which
* using non-overloaded methods would permit this expectation to be
* broken.
*/
class regex
{
public:
/// The constructor
regex ():
comp(),
rstr()
{}
/**
* The constructor.
*
* May throw if the regex is invalid.
*
* @param pattern a regex
*/
regex (std::string const& pattern):
comp(pattern, std::regex::extended),
rstr(pattern)
{}
/**
* The constructor.
*
* May throw if the regex is invalid.
*
* @param pattern a regex
*/
regex (const char *pattern):
comp(pattern, std::regex::extended),
rstr(pattern)
{}
///* The destructor.
~regex ()
{}
/**
* The copy constructor.
*
* May throw if the regex is invalid.
*
* @param pattern a regex
*/
regex (const regex& rhs):
comp(rhs.comp),
rstr(rhs.rstr)
{}
std::string const&
str() const
{
return rstr;
}
bool
compare (regex const& rhs) const
{
return this->rstr != rhs.rstr;
}
bool
search (std::string const& str) const
{
return std::regex_search(str, this->comp);
}
/**
* Get the regex name from a stream.
*
* May throw if the regex is invalid.
*
* @param stream the stream to get input from.
* @param rhs the regex to set.
* @returns the stream.
*/
template <class charT, class traits>
friend
std::basic_istream<charT,traits>&
operator >> (std::basic_istream<charT,traits>& stream,
regex& rhs)
{
std::string regex;
if (std::getline(stream, regex))
{
rhs.comp.assign(regex, std::regex::extended);
rhs.rstr = regex;
}
return stream;
}
/**
* Print the regex name to a stream.
*
* @param stream the stream to output to.
* @param rhs the regex to output.
* @returns the stream.
*/
template <class charT, class traits>
friend
std::basic_ostream<charT,traits>&
operator << (std::basic_ostream<charT,traits>& stream,
regex const& rhs)
{
return stream << rhs.str();
}
private:
/// Compiled regular expression.
std::regex comp;
/// String containing the regex.
std::string rstr;
};
/**
* Search using the regular expression.
*/
inline bool
regex_search (const std::string& str,
regex const& regex)
{
return regex.search(str);
}
}
#endif /* SBUILD_REGEX_H */
/*
* Local Variables:
* mode:C++
* End:
*/
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