/*
 * Cppcheck - A tool for static C/C++ code analysis
 * Copyright (C) 2007-2018 Cppcheck team.
 *
 * 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
 */

#include "pathmatch.h"

#include "path.h"
#include "utils.h"

#include <algorithm>
#include <cctype>
#include <cstddef>

PathMatch::PathMatch(const std::vector<std::string> &excludedPaths, bool caseSensitive)
 : mExcludedPaths(excludedPaths), mCaseSensitive(caseSensitive)
{
 if (!mCaseSensitive)
 for (std::vector<std::string>::iterator i = mExcludedPaths.begin(); i != mExcludedPaths.end(); ++i)
 std::transform(i->begin(), i->end(), i->begin(), ::tolower);
 mWorkingDirectory.push_back(Path::getCurrentPath());
}

bool PathMatch::match(const std::string &path) const
{
 if (path.empty())
 return false;

 for (std::vector<std::string>::const_iterator i = mExcludedPaths.begin(); i != mExcludedPaths.end(); ++i) {
 const std::string excludedPath((!Path::isAbsolute(path) && Path::isAbsolute(*i)) ? Path::getRelativePath(*i, mWorkingDirectory) : *i);

 std::string findpath = Path::fromNativeSeparators(path);
 if (!mCaseSensitive)
 std::transform(findpath.begin(), findpath.end(), findpath.begin(), ::tolower);

 // Filtering directory name
 if (endsWith(excludedPath,'/')) {
 if (!endsWith(findpath,'/'))
 findpath = removeFilename(findpath);

 if (excludedPath.length() > findpath.length())
 continue;
 // Match relative paths starting with mask
 // -isrc matches src/foo.cpp
 if (findpath.compare(0, excludedPath.size(), excludedPath) == 0)
 return true;
 // Match only full directory name in middle or end of the path
 // -isrc matches myproject/src/ but does not match
 // myproject/srcfiles/ or myproject/mysrc/
 if (findpath.find("/" + excludedPath) != std::string::npos)
 return true;
 }
 // Filtering filename
 else {
 if (excludedPath.length() > findpath.length())
 continue;
 // Check if path ends with mask
 // -ifoo.cpp matches (./)foo.c, src/foo.cpp and proj/src/foo.cpp
 // -isrc/file.cpp matches src/foo.cpp and proj/src/foo.cpp
 if (findpath.compare(findpath.size() - excludedPath.size(), findpath.size(), excludedPath) == 0)
 return true;

 }
 }
 return false;
}

std::string PathMatch::removeFilename(const std::string &path)
{
 const std::size_t ind = path.find_last_of('/');
 return path.substr(0, ind + 1);
}