/*
    Copyright (C) 2007 Tim Mayberry 

    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, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include <glibmm/miscutils.h>

#include "pbd/tokenizer.h"
#include "pbd/search_path.h"
#include "pbd/error.h"

using namespace std;

namespace {

#ifdef PLATFORM_WINDOWS
const char * const path_delimiter = ";";
#else
const char * const path_delimiter = ":";
#endif

}

namespace PBD {

SearchPath::SearchPath ()
{

}

SearchPath::SearchPath (const string& path)
{
	vector<std::string> tmp;

	if (tokenize (path, string(path_delimiter), std::back_inserter (tmp))) {
		add_directories (tmp);
	}
}

SearchPath::SearchPath (const vector<std::string>& paths)
{
	add_directories (paths);
}

void
SearchPath::add_directory (const std::string& directory_path)
{
	if (!directory_path.empty()) {
		push_back(directory_path);
	}
}

void
SearchPath::add_directories (const vector<std::string>& paths)
{
	for(vector<std::string>::const_iterator i = paths.begin(); i != paths.end(); ++i) {
		add_directory (*i);
	}
}

const string
SearchPath::to_string () const
{
	string path;

	for (vector<std::string>::const_iterator i = begin(); i != end(); ++i) {
		path += *i;
		path += path_delimiter;
	}

	path = path.substr (0, path.length() - 1); // drop final separator

	return path;
}

SearchPath& 
SearchPath::operator+= (const SearchPath& spath)
{
	insert(end(), spath.begin(), spath.end());
	return *this;
}

SearchPath& 
SearchPath::operator+= (const std::string& directory_path)
{
	add_directory (directory_path);
	return *this;
}

SearchPath& 
SearchPath::operator+ (const std::string& directory_path)
{
	add_directory (directory_path);
	return *this;
}

SearchPath& 
SearchPath::operator+ (const SearchPath& spath)
{
	// concatenate paths into new SearchPath
	insert(end(), spath.begin(), spath.end());
	return *this;
}

SearchPath&
SearchPath::add_subdirectory_to_paths (const string& subdir)
{
	for (vector<std::string>::iterator i = begin(); i != end(); ++i) {
		// should these new paths just be added to the end of 
		// the search path rather than replace?
		*i = Glib::build_filename (*i, subdir);
	}
	
	return *this;
}

} // namespace PBD