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/*
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.
*/
#ifndef __filesystem_h__
#define __filesystem_h__
#include <stdexcept>
#include <string>
namespace PBD {
namespace sys {
using std::string;
class path
{
public:
path() : m_path("") { }
path(const path & p) : m_path(p.m_path) { }
path(const string & s) : m_path(s) { }
path(const char* s) : m_path(s) { }
path& operator=(const path& p) { m_path = p.m_path; return *this;}
path& operator=(const string& s) { m_path = s; return *this; }
path& operator=(const char* s) { m_path = s; return *this; }
path& operator/=(const path& rhs);
path& operator/=(const string& s);
path& operator/=(const char* s);
const string to_string() const { return m_path; }
private:
string m_path;
};
class filesystem_error : public std::runtime_error
{
const int m_error_code;
public:
explicit filesystem_error(const std::string & what, int error_code=0)
: std::runtime_error(what), m_error_code(error_code) { }
int system_error() const { return m_error_code; }
};
/// @return true if path at p exists
bool exists(const path & p);
/// @return true if path at p is a directory.
bool is_directory(const path & p);
/**
* Attempt to create a directory at p as if by the glib function g_mkdir
* with a second argument of S_IRWXU|S_IRWXG|S_IRWXO
*
* @throw filesystem_error if mkdir fails for any other reason other than
* the directory already exists.
*
* @return true If the directory p was created, otherwise false
*
* @post is_directory(p)
*/
bool create_directory(const path & p);
/**
* Attempt to create a directory at p as if by the glib function
* g_mkdir_with_parents with a second argument of S_IRWXU|S_IRWXG|S_IRWXO
*
* @throw filesystem_error if g_mkdir_with_parents fails for any other
* reason other than the directory already exists.
*
* @return true If the directory at p was created, otherwise false
*
* @post is_directory(p)
*/
bool create_directories(const path & p);
/**
* Attempt to delete the file at path p as if by the glib function
* g_unlink.
*
* @return true if file existed prior to removing it, false if file
* at p did not exist.
*
* @throw filesystem_error if removing the file failed for any other
* reason other than the file did not exist.
*/
bool remove(const path & p);
/**
* Attempt to copy the contents of the file from_path to a new file
* at path to_path.
*
* @throw filesystem_error if from_path.empty() || to_path.empty() ||
* !exists(from_path) || !is_regular(from_path) || exists(to_path)
*/
void copy_file(const path & from_path, const path & to_path);
string basename (const path& p);
} // namespace sys
} // namespace PBD
#endif
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