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/*
* Copyright (C) 2018 James Turner
* Copyright (C) 2018 Edward d'Auvergne
*
* This file is part of the program FlightGear.
*
* 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 2 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 <iostream>
#include <simgear/misc/strutils.hxx>
#include <Main/fg_init.hxx>
#include <Include/version.h>
#include "config.h"
#include "dataStore.hxx"
// Sanity check.
bool looksLikeFGData(const SGPath& path)
{
return (path / "defaults.xml").exists();
}
// Set up the path to FGData.
int DataStore::findFGRoot(const std::string& fgRootCmdLineOpt, bool debug)
{
SGPath fgRoot;
// Command line supplied path.
if (!fgRootCmdLineOpt.empty()) {
fgRoot = SGPath::fromUtf8(fgRootCmdLineOpt);
if (looksLikeFGData(fgRoot)) {
if (debug)
std::cerr << "FGdata from the command line: " << fgRoot << std::endl;
_fgRootPath = fgRoot;
return 0;
// Fail if an invalid path is supplied.
} else {
std::cerr << "The supplied path \"" << fgRootCmdLineOpt << "\" is not a valid FGData path." << std::endl;
return 1;
}
}
// The FG_DATA_DIR CMake option.
fgRoot = SGPath::fromUtf8(PKGLIBDIR);
if (looksLikeFGData(fgRoot)) {
if (debug)
std::cerr << "FGdata found via $PKGLIBDIR: " << fgRoot << std::endl;
_fgRootPath = fgRoot;
return 0;
}
// The FG_ROOT environmental variable.
if (std::getenv("FG_ROOT")) {
fgRoot = SGPath::fromEnv("FG_ROOT");
if (looksLikeFGData(fgRoot)) {
if (debug)
std::cerr << "FGdata found via $FG_ROOT: " << fgRoot << std::endl;
_fgRootPath = fgRoot;
return 0;
}
}
// Try in ../fgdata.
fgRoot = SGPath::fromUtf8(FGSRCDIR) / ".." / "fgdata";
if (looksLikeFGData(fgRoot)) {
if (debug)
std::cerr << "FGdata found at \"$FGSRCDIR/../fgdata\": " << fgRoot << std::endl;
_fgRootPath = fgRoot;
return 0;
}
// Try in ../data.
fgRoot = SGPath::fromUtf8(FGSRCDIR) / ".." / "data";
if (looksLikeFGData(fgRoot)) {
if (debug)
std::cerr << "FGdata found at \"$FGSRCDIR/../data\": " << std::endl;
_fgRootPath = fgRoot;
return 0;
}
// No FGData.
std::cerr << "FGData not found." << std::endl;
return 1;
}
// Get the path to FGData.
SGPath DataStore::getFGRoot()
{
return _fgRootPath;
}
// Perform a version validation of FGData, returning zero if ok.
int DataStore::validateFGRoot()
{
// The FGData version.
SGPath root = getFGRoot();
std::string base_version = fgBasePackageVersion(root);
if (base_version.empty()) {
std::cout << "Base package not found." << std::endl;
std::cout << "Required FGData files not found, please check your configuration." << std::endl;
std::cout << "Looking for FGData files in '" << root.str() << "'." << std::endl;
std::cout.flush();
return 1;
}
// Comparison of only the major and minor version numbers.
const int versionComp = simgear::strutils::compare_versions(FLIGHTGEAR_VERSION, base_version, 2);
if (versionComp != 0) {
std::cout << "Base package version mismatch." << std::endl;
std::cout << "Version check failed, please check your configuration." << std::endl;
std::cout << "The FGData version '" << base_version << "' in '" << root.str();
std::cout << "does not match the FlightGear version '" << std::string(FLIGHTGEAR_VERSION);
std::cout << "'." << std::endl;
std::cout.flush();
}
return versionComp;
}
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