pcsx2/common/src/Utilities/PathUtils.cpp

/*  PCSX2 - PS2 Emulator for PCs
 *  Copyright (C) 2002-2009  PCSX2 Dev Team
 *
 *  PCSX2 is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU Lesser General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  PCSX2 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 PCSX2.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#include "PrecompiledHeader.h"
#include "Path.h"

#include <wx/file.h>

#ifdef __LINUX__
#ifndef _S_IFDIR
#define _S_IFDIR S_IFDIR
#endif

#ifndef _S_IFREG
#define _S_IFREG S_IFREG
#endif
#else
#include <direct.h>
#endif

// ---------------------------------------------------------------------------------
//  wxDirName Implementations
// ---------------------------------------------------------------------------------

wxFileName wxDirName::Combine( const wxFileName& right ) const
{
	wxASSERT_MSG( IsDir(), L"Warning: Malformed directory name detected during wxDirName concatenation." );
	if( right.IsAbsolute() )
		return right;

	// Append any directory parts from right, and then set the filename.
	// Except we can't do that because our m_members are private (argh!) and there is no API
	// for getting each component of the path.  So instead let's use Normalize:

	wxFileName result( right );
	result.Normalize( wxPATH_NORM_ENV_VARS | wxPATH_NORM_DOTS | wxPATH_NORM_ABSOLUTE, GetPath() );
	return result;
}

wxDirName wxDirName::Combine( const wxDirName& right ) const
{
	wxASSERT_MSG( IsDir() && right.IsDir(), L"Warning: Malformed directory name detected during wDirName concatenation." );

	wxDirName result( right );
	result.Normalize( wxPATH_NORM_ENV_VARS | wxPATH_NORM_DOTS | wxPATH_NORM_ABSOLUTE, GetPath() );
	return result;
}

wxDirName& wxDirName::Normalize( int flags, const wxString& cwd )
{
	wxASSERT_MSG( IsDir(), L"Warning: Malformed directory name detected during wDirName normalization." );
	if( !wxFileName::Normalize( flags, cwd ) )
		throw Exception::RuntimeError( "wxDirName::Normalize operation failed." );
	return *this;
}

wxDirName& wxDirName::MakeRelativeTo( const wxString& pathBase )
{
	wxASSERT_MSG( IsDir(), L"Warning: Malformed directory name detected during wDirName normalization." );
	if( !wxFileName::MakeRelativeTo( pathBase ) )
		throw Exception::RuntimeError( "wxDirName::MakeRelativeTo operation failed." );
	return *this;
}

wxDirName& wxDirName::MakeAbsolute( const wxString& cwd )
{
	wxASSERT_MSG( IsDir(), L"Warning: Malformed directory name detected during wDirName normalization." );
	if( !wxFileName::MakeAbsolute( cwd ) )
		throw Exception::RuntimeError( "wxDirName::MakeAbsolute operation failed." );
	return *this;
}

void wxDirName::Rmdir()
{
	if( !Exists() ) return;
	wxFileName::Rmdir();
	// TODO : Throw exception if operation failed?  Do we care?
}

bool wxDirName::Mkdir()
{
	if( Exists() ) return true;

	// Recursively create child directories as needed:
	wxDirName recurse( *this );
	recurse.RemoveLastDir();
	if( !recurse.Mkdir() ) return false;

	return wxFileName::Mkdir();
}


// ---------------------------------------------------------------------------------
//  Path namespace (wxFileName helpers)
// ---------------------------------------------------------------------------------


bool Path::IsRelative( const wxString& path )
{
	return wxDirName( path ).IsRelative();
}

// Returns -1 if the file does not exist.
s64 Path::GetFileSize( const wxString& path )
{
	if( !wxFile::Exists( path.c_str() ) ) return -1;
	return (s64)wxFileName::GetSize( path ).GetValue();
}

// Concatenates two pathnames together, inserting delimiters (backslash on win32)
// as needed! Assumes the 'dest' is allocated to at least g_MaxPath length.
//
wxString Path::Combine( const wxString& srcPath, const wxString& srcFile )
{
	return (wxDirName( srcPath ) + srcFile).GetFullPath();
}

wxString Path::Combine( const wxDirName& srcPath, const wxFileName& srcFile )
{
	return (srcPath + srcFile).GetFullPath();
}

wxString Path::Combine( const wxString& srcPath, const wxDirName& srcFile )
{
	return ((wxDirName)srcPath + srcFile).ToString();
}

// Replaces the extension of the file with the one given.
// This function works for path names as well as file names.
wxString Path::ReplaceExtension( const wxString& src, const wxString& ext )
{
	wxFileName jojo( src );
	jojo.SetExt( ext );
	return jojo.GetFullPath();
}

wxString Path::ReplaceFilename( const wxString& src, const wxString& newfilename )
{
	wxFileName jojo( src );
	jojo.SetFullName( newfilename );
	return jojo.GetFullPath();
}

wxString Path::GetFilename( const wxString& src )
{
	return wxFileName(src).GetFullName();
}

wxString Path::GetFilenameWithoutExt( const wxString& src )
{
	return wxFileName(src).GetName();
}

wxString Path::GetDirectory( const wxString& src )
{
	return wxFileName(src).GetPath();
}


// returns the base/root directory of the given path.
// Example /this/that/something.txt -> dest == "/"
wxString Path::GetRootDirectory( const wxString& src )
{
	size_t pos = src.find_first_of( wxFileName::GetPathSeparators() );
	if( pos == wxString::npos )
		return wxString();
	else
		return wxString( src.begin(), src.begin()+pos );
}