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/*
* Copyright (c) 2012, Martin Erik Werner <martinerikwerner@gmail.com>
* This software is released under the The BSD-2-Clause License:
*
* 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.
*
* 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 HOLDER 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.
*/
// Compile via ~$ g++ -c dataPath.cpp
#include "dataPath.hpp"
#include <fstream>
#include <cstdlib>
#include <sys/stat.h>
#include <sys/types.h>
#include <stdexcept>
#include <cerrno>
#include <gvl/support/platform.hpp> // For GVL_WINDOWS
#include "filesystem.hpp"
using namespace std;
#if GVL_WINDOWS
#include <direct.h> // _mkdir()
#endif
string create_configdir(string directory)
{
#if GVL_WINDOWS
if (_mkdir(directory.c_str()) == 0) {
return directory;
#else
if (mkdir(directory.c_str(), 0777) == 0) {
return directory;
#endif
} else if (errno == EEXIST) {
return directory;
} else {
throw runtime_error("Unable to create configdir '"
+ directory + "'");
}
}
DataPath::DataPath(string a_readonly_path)
{
if (isDir(a_readonly_path))
readonly_path = a_readonly_path; // Don't getRoot on a dir
else
readonly_path = getRoot(a_readonly_path);
#if GVL_WINDOWS
configdotdir = "user";
#else
configdotdir = string(getenv("HOME")) + '/' + ".lierolibre";
#endif
// Map of files we may want to return path to
// should probably be read from plaintext file
// true means writable, false read-only
file_access_map.insert(pair<string, bool>("LIERO.EXE", false));
file_access_map.insert(pair<string, bool>("LIERO.CHR", false));
file_access_map.insert(pair<string, bool>("LIERO.SND", false));
file_access_map.insert(pair<string, bool>("NAMES.DAT", false));
file_access_map.insert(pair<string, bool>("LIERO.OPT", true));
file_access_map.insert(pair<string, bool>("LIERO.DAT", true));
file_access_map.insert(pair<string, bool>("liero.cfg", true));
file_access_map.insert(pair<string, bool>("lierocfg.txt", true));
}
string DataPath::file(string filename)
{
fstream file_writable;
ifstream file_readonly;
string filepath_readonly = readonly_path + '/' + filename;
string filepath_writable = configdotdir + '/' + filename;
if (file_access_map.count(filename) == 0) {
if (filename.substr(filename.find_last_of(".") + 1)
== "DAT") {
// file ends with .DAT
return filepath_writable;
} else {
throw runtime_error("Unknown file '" + filename + "'");
}
}
bool file_shouldbe_writable = file_access_map.find(filename)->second;
if (file_shouldbe_writable) {
file_writable.open(filepath_writable.c_str(),
ios::binary | ios::in);
if (file_writable.is_open()) {
// File exists in configdir
return filepath_writable;
} else {
// file does not exist in configdir
file_readonly.open(filepath_readonly.c_str(),
ios::binary);
if (file_readonly.is_open()) {
// file exists in readonly
create_configdir(configdotdir);
file_writable.open( filepath_writable.c_str(),
ios::binary | ios::out);
if (file_writable.is_open()) {
file_writable
<< file_readonly.rdbuf();
// error handling
return filepath_writable;
} else {
// couldn't open writable file
throw runtime_error("Could not open file '"
+ filepath_writable
+ "' for writing");
}
} else {
// file does not exist anywhere
throw runtime_error("Could not open file '"
+ filepath_writable + "'");
}
}
} else {
// file should not be writable
file_readonly.open(filepath_readonly.c_str());
if (file_readonly.is_open()) {
// file exists in readonly
return filepath_readonly;
} else {
// file does not exist anywhere
throw runtime_error("Could not open file '"
+ filepath_readonly + "'");
}
}
}
string DataPath::configdir(void)
{
return create_configdir(configdotdir);
}
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