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/*
* Copyright (c) 2003-2023, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @addtogroup util
*/
/**
* @file mask.h
* @author John Wiegley
*
* @ingroup util
*
* @brief Regular expression masking.
*/
#pragma once
#include "utils.h"
#if HAVE_BOOST_REGEX_UNICODE
#include "unistring.h"
#endif
namespace ledger {
class mask_t
{
public:
#if HAVE_BOOST_REGEX_UNICODE
boost::u32regex expr;
#else
boost::regex expr;
#endif
explicit mask_t(const string& pattern);
mask_t() : expr() {
TRACE_CTOR(mask_t, "");
}
mask_t(const mask_t& m) : expr(m.expr) {
TRACE_CTOR(mask_t, "copy");
}
~mask_t() throw() {
TRACE_DTOR(mask_t);
}
mask_t& operator=(const string& other);
mask_t& assign_glob(const string& other);
bool operator<(const mask_t& other) const {
return expr < other.expr;
}
bool operator==(const mask_t& other) const {
return expr == other.expr;
}
bool match(const string& text) const {
#if HAVE_BOOST_REGEX_UNICODE
DEBUG("mask.match",
"Matching: \"" << text << "\" =~ /" << str() << "/ = "
<< (boost::u32regex_search(text, expr) ? "true" : "false"));
return boost::u32regex_search(text, expr);
#else
DEBUG("mask.match",
"Matching: \"" << text << "\" =~ /" << str() << "/ = "
<< (boost::regex_search(text, expr) ? "true" : "false"));
return boost::regex_search(text, expr);
#endif
}
bool empty() const {
return expr.empty();
}
string str() const {
if (! empty()) {
#if HAVE_BOOST_REGEX_UNICODE
assert(sizeof(boost::uint32_t) == sizeof(UChar32));
unistring ustr;
std::basic_string<UChar32> expr_str = expr.str();
std::copy(expr_str.begin(), expr_str.end(),
std::back_inserter(ustr.utf32chars));
return ustr.extract();
#else
return expr.str();
#endif
} else {
return empty_string;
}
}
bool valid() const {
if (expr.status() != 0) {
DEBUG("ledger.validate", "mask_t: expr.status() != 0");
return false;
}
return true;
}
};
inline std::ostream& operator<<(std::ostream& out, const mask_t& mask) {
out << mask.str();
return out;
}
inline void put_mask(property_tree::ptree& pt, const mask_t& mask) {
pt.put_value(mask.str());
}
} // namespace ledger
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