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//
// Copyright 2010-2012 Ettus Research LLC
//
// 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 <uhd/config.hpp>
#include <uhd/utils/paths.hpp>
#include <boost/tokenizer.hpp>
#include <boost/filesystem.hpp>
#include <boost/foreach.hpp>
#include <boost/bind.hpp>
#include <cstdlib>
#include <string>
#include <vector>
#include <cstdlib> //getenv
#include <cstdio> //P_tmpdir
#ifdef BOOST_MSVC
#define USE_GET_TEMP_PATH
#include <windows.h> //GetTempPath
#endif
namespace fs = boost::filesystem;
/***********************************************************************
* Determine the paths separator
**********************************************************************/
#ifdef UHD_PLATFORM_WIN32
static const std::string env_path_sep = ";";
#else
static const std::string env_path_sep = ":";
#endif /*UHD_PLATFORM_WIN32*/
#define path_tokenizer(inp) \
boost::tokenizer<boost::char_separator<char> > \
(inp, boost::char_separator<char>(env_path_sep.c_str()))
/***********************************************************************
* Get a list of paths for an environment variable
**********************************************************************/
static std::string get_env_var(const std::string &var_name, const std::string &def_val = ""){
const char *var_value_ptr = std::getenv(var_name.c_str());
return (var_value_ptr == NULL)? def_val : var_value_ptr;
}
static std::vector<fs::path> get_env_paths(const std::string &var_name){
std::string var_value = get_env_var(var_name);
//convert to filesystem path, filter blank paths
std::vector<fs::path> paths;
if (var_value.empty()) return paths; //FIXME boost tokenizer throws w/ blank strings on some platforms
BOOST_FOREACH(const std::string &path_string, path_tokenizer(var_value)){
if (path_string.empty()) continue;
paths.push_back(fs::system_complete(path_string));
}
return paths;
}
/***********************************************************************
* Get a list of special purpose paths
**********************************************************************/
std::string uhd::get_pkg_path(void)
{
return get_env_var("UHD_PKG_PATH", UHD_PKG_PATH);
}
std::vector<fs::path> get_image_paths(void){
std::vector<fs::path> paths = get_env_paths("UHD_IMAGE_PATH");
paths.push_back(fs::path(uhd::get_pkg_path()) / "share" / "uhd" / "images");
return paths;
}
std::vector<fs::path> get_module_paths(void){
std::vector<fs::path> paths = get_env_paths("UHD_MODULE_PATH");
paths.push_back(fs::path(uhd::get_pkg_path()) / UHD_LIB_DIR / "uhd" / "modules");
return paths;
}
/***********************************************************************
* Implement the functions in paths.hpp
**********************************************************************/
std::string uhd::get_tmp_path(void){
const char *tmp_path = NULL;
//try the official uhd temp path environment variable
tmp_path = std::getenv("UHD_TEMP_PATH");
if (tmp_path != NULL) return tmp_path;
//try the windows function if available
#ifdef USE_GET_TEMP_PATH
char lpBuffer[2048];
if (GetTempPath(sizeof(lpBuffer), lpBuffer)) return lpBuffer;
#endif
//try windows environment variables
tmp_path = std::getenv("TMP");
if (tmp_path != NULL) return tmp_path;
tmp_path = std::getenv("TEMP");
if (tmp_path != NULL) return tmp_path;
//try the stdio define if available
#ifdef P_tmpdir
return P_tmpdir;
#else
//try unix environment variables
tmp_path = std::getenv("TMPDIR");
if (tmp_path != NULL) return tmp_path;
//give up and use the unix default
return "/tmp";
#endif
}
std::string uhd::get_app_path(void){
const char *appdata_path = std::getenv("APPDATA");
if (appdata_path != NULL) return appdata_path;
const char *home_path = std::getenv("HOME");
if (home_path != NULL) return home_path;
return uhd::get_tmp_path();
}
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