/*
 * Cppcheck - A tool for static C/C++ code analysis
 * Copyright (C) 2007-2020 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 <QString>
#include <QDir>
#include <QFileInfo>
#include "filelist.h"
#include "pathmatch.h"

QStringList FileList::getDefaultFilters()
{
 QStringList extensions;
 extensions << "*.cpp" << "*.cxx" << "*.cc" << "*.c" << "*.c++" << "*.txx" << "*.tpp";
 return extensions;
}

bool FileList::filterMatches(const QFileInfo &inf)
{
 if (inf.isFile()) {
 const QStringList filters = FileList::getDefaultFilters();
 QString ext("*.");
 ext += inf.suffix();
 if (filters.contains(ext, Qt::CaseInsensitive))
 return true;
 }
 return false;
}

void FileList::addFile(const QString &filepath)
{
 QFileInfo inf(filepath);
 if (filterMatches(inf))
 mFileList << inf;
}

void FileList::addDirectory(const QString &directory, bool recursive)
{
 QDir dir(directory);
 dir.setSorting(QDir::Name);
 const QStringList filters = FileList::getDefaultFilters();
 const QStringList origNameFilters = dir.nameFilters();
 dir.setNameFilters(filters);
 if (!recursive) {
 dir.setFilter(QDir::Files | QDir::NoDotAndDotDot);
 QFileInfoList items = dir.entryInfoList();
 mFileList += items;
 } else {
 dir.setFilter(QDir::Files | QDir::NoDotAndDotDot);
 QFileInfoList items = dir.entryInfoList();
 mFileList += items;

 dir.setNameFilters(origNameFilters);
 dir.setFilter(QDir::Dirs | QDir::NoDotAndDotDot);
 QFileInfoList list = dir.entryInfoList();
 QFileInfo item;
 foreach (item, list) {
 const QString path = item.canonicalFilePath();
 addDirectory(path, recursive);
 }
 }
}

void FileList::addPathList(const QStringList &paths)
{
 QString path;
 foreach (path, paths) {
 QFileInfo inf(path);
 if (inf.isFile())
 addFile(path);
 else
 addDirectory(path, true);
 }
}

QStringList FileList::getFileList() const
{
 if (mExcludedPaths.empty()) {
 QStringList names;
 foreach (QFileInfo item, mFileList) {
 QString name = QDir::fromNativeSeparators(item.filePath());
 names << name;
 }
 return names;
 } else {
 return applyExcludeList();
 }
}

void FileList::addExcludeList(const QStringList &paths)
{
 mExcludedPaths = paths;
}

static std::vector<std::string> toStdStringList(const QStringList &stringList)
{
 std::vector<std::string> ret;
 foreach (const QString &s, stringList) {
 ret.push_back(s.toStdString());
 }
 return ret;
}

QStringList FileList::applyExcludeList() const
{
#ifdef _WIN32
 const PathMatch pathMatch(toStdStringList(mExcludedPaths), true);
#else
 const PathMatch pathMatch(toStdStringList(mExcludedPaths), false);
#endif

 QStringList paths;
 foreach (QFileInfo item, mFileList) {
 QString name = QDir::fromNativeSeparators(item.canonicalFilePath());
 if (!pathMatch.match(name.toStdString()))
 paths << name;
 }
 return paths;
}