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/*
* Copyright (c) 2009-2016, Albertas Vyšniauskas
* 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 the software author 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.
*/
#include "Paths.h"
#include <glib.h>
#include <boost/filesystem.hpp>
#include <boost/optional.hpp>
#include <boost/predef.h>
#include <exception>
namespace fs = boost::filesystem;
using path = fs::path;
struct PathException : std::runtime_error {
PathException(const char *message):
std::runtime_error(message) {
}
};
#ifdef BOOST_OS_LINUX
static std::string getExecutablePath() {
std::vector<char> buffer;
buffer.resize(4096);
while (1) {
int count = ::readlink("/proc/self/exe", &buffer.front(), buffer.size());
if (count < 0)
throw PathException("could not read executable path");
if ((size_t)count < buffer.size())
return std::string(buffer.begin(), buffer.begin() + count);
buffer.resize(buffer.size() * 2);
}
}
#else
static std::string getExecutablePath() {
return "";
}
#endif
static path &getUserConfigPath() {
static boost::optional<path> configPath;
if (configPath)
return *configPath;
configPath = path(g_get_user_config_dir());
return *configPath;
}
static path &getDataPath() {
static boost::optional<path> dataPath;
if (dataPath)
return *dataPath;
path testPath;
try {
if (fs::is_directory(fs::status(testPath = (path(getExecutablePath()).remove_filename() / "share" / "gpick"))))
return *(dataPath = testPath);
} catch (const PathException &) {
}
if (fs::is_directory(fs::status(testPath = (path(g_get_user_data_dir()) / "gpick"))))
return *(dataPath = testPath);
auto dataPaths = g_get_system_data_dirs();
for (size_t i = 0; dataPaths[i]; ++i) {
if (fs::is_directory(fs::status(testPath = (path(dataPaths[i]) / "gpick"))))
return *(dataPath = testPath);
}
dataPath = path();
return *dataPath;
}
std::string buildFilename(const char *filename) {
if (filename)
return (getDataPath() / filename).string();
else
return getDataPath().string();
}
std::string buildConfigPath(const char *filename) {
if (filename)
return (getUserConfigPath() / "gpick" / filename).string();
else
return (getUserConfigPath() / "gpick").string();
}
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