File: file.cpp

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/* Gobby - GTK-based collaborative text editor
 * Copyright (C) 2008-2015 Armin Burgmeier <armin@arbur.net>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "util/file.hpp"
#include "util/i18n.hpp"

#include <glibmm/ustring.h>
#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>

#include <stdexcept>

// For mkdir / CreateDirectory
#ifdef WIN32
#include <windows.h>
#else
#include <glib/gstdio.h>
#include <cstring>
#include <cerrno>
#endif

namespace
{
	void create_directory(const char* path, int mode)
	{
#ifdef WIN32
		// TODO: Use widechar API?
		if(CreateDirectoryA(path, NULL) == FALSE)
		{
			LPVOID msgbuf;
			DWORD err = GetLastError();

			// TODO: Use widechar API?
			FormatMessageA(
				FORMAT_MESSAGE_ALLOCATE_BUFFER |
				FORMAT_MESSAGE_FROM_SYSTEM,
				NULL,
				err,
				MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
				reinterpret_cast<LPSTR>(&msgbuf),
				0,
				NULL
			);

			std::string error_message = static_cast<LPSTR>(msgbuf);
			LocalFree(msgbuf);

			// TODO: Convert to UTF-8?

			throw std::runtime_error(
				Glib::ustring::compose(
					Gobby::_("Could not create directory "
					  "\"%1\": %2"), std::string(path),
					error_message));
		}
#else
		if(g_mkdir(path, mode) == -1)
		{
			throw std::runtime_error(
				Glib::ustring::compose(
					Gobby::_("Could not create directory "
					  "\"%1\": %2"), std::string(path),
					std::strerror(errno)));
		}
#endif
	}
}

namespace Gobby
{
	void create_directory_with_parents(const std::string& path, int mode)
	{
		// Directory exists, nothing to do
		if(Glib::file_test(path, Glib::FILE_TEST_IS_DIR) )
			return;

		// Find path to the directory to create
		std::string path_to = Glib::path_get_dirname(path);

		// Create this path, if it doesn't exists
		create_directory_with_parents(path_to, mode);

		// Create new directory
		create_directory(path.c_str(), mode);
	}

	std::string config_filename(const std::string& filename)
	{
		return Glib::build_filename(
			Glib::build_filename(
				Glib::get_user_config_dir(),
				"gobby"),
			filename);
	}
}