stella/src/emucore/FSNode.cxx

209 lines
6.0 KiB
C++

//============================================================================
//
// SSSS tt lll lll
// SS SS tt ll ll
// SS tttttt eeee ll ll aaaa
// SSSS tt ee ee ll ll aa
// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
// SS SS tt ee ll ll aa aa
// SSSS ttt eeeee llll llll aaaaa
//
// Copyright (c) 1995-2014 by Bradford W. Mott, Stephen Anthony
// and the Stella Team
//
// See the file "License.txt" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//
// $Id$
//
// Based on code from ScummVM - Scumm Interpreter
// Copyright (C) 2002-2004 The ScummVM project
//============================================================================
#include <zlib.h>
#include "bspf.hxx"
#include "SharedPtr.hxx"
#include "FSNodeFactory.hxx"
#include "FSNode.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
FilesystemNode::FilesystemNode()
{
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
FilesystemNode::FilesystemNode(AbstractFSNode *realNode)
: _realNode(realNode)
{
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
FilesystemNode::FilesystemNode(const string& p)
{
AbstractFSNode* tmp = 0;
// Is this potentially a ZIP archive?
if(BSPF_containsIgnoreCase(p, ".zip"))
tmp = FilesystemNodeFactory::create(p, FilesystemNodeFactory::ZIP);
else
tmp = FilesystemNodeFactory::create(p, FilesystemNodeFactory::SYSTEM);
_realNode = Common::SharedPtr<AbstractFSNode>(tmp);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::exists() const
{
return _realNode ? _realNode->exists() : false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::getChildren(FSList& fslist, ListMode mode, bool hidden) const
{
if (!_realNode || !_realNode->isDirectory())
return false;
AbstractFSList tmp;
tmp.reserve(fslist.capacity());
if (!_realNode->getChildren(tmp, mode, hidden))
return false;
for (AbstractFSList::iterator i = tmp.begin(); i != tmp.end(); ++i)
fslist.push_back(FilesystemNode(*i));
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const string& FilesystemNode::getName() const
{
return _realNode->getName();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const string& FilesystemNode::getPath() const
{
return _realNode->getPath();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
string FilesystemNode::getShortPath() const
{
return _realNode->getShortPath();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
string FilesystemNode::getNameWithExt(const string& ext) const
{
size_t pos = _realNode->getName().find_last_of("/\\");
string s = pos == string::npos ? _realNode->getName() :
_realNode->getName().substr(pos+1);
pos = s.find_last_of(".");
return (pos != string::npos) ? s.replace(pos, string::npos, ext) : s + ext;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
string FilesystemNode::getPathWithExt(const string& ext) const
{
string s = _realNode->getPath();
size_t pos = s.find_last_of(".");
return (pos != string::npos) ? s.replace(pos, string::npos, ext) : s + ext;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
string FilesystemNode::getShortPathWithExt(const string& ext) const
{
string s = _realNode->getShortPath();
size_t pos = s.find_last_of(".");
return (pos != string::npos) ? s.replace(pos, string::npos, ext) : s + ext;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::hasParent() const
{
return _realNode ? (_realNode->getParent() != 0) : false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
FilesystemNode FilesystemNode::getParent() const
{
if (_realNode == 0)
return *this;
AbstractFSNode* node = _realNode->getParent();
return (node == 0) ? *this : FilesystemNode(node);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::isDirectory() const
{
return _realNode ? _realNode->isDirectory() : false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::isFile() const
{
return _realNode ? _realNode->isFile() : false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::isReadable() const
{
return _realNode ? _realNode->isReadable() : false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::isWritable() const
{
return _realNode ? _realNode->isWritable() : false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::makeDir()
{
return (_realNode && !_realNode->exists()) ? _realNode->makeDir() : false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool FilesystemNode::rename(const string& newfile)
{
return (_realNode && _realNode->exists()) ? _realNode->rename(newfile) : false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt32 FilesystemNode::read(uInt8*& image) const
{
uInt32 size = 0;
// First let the private subclass attempt to open the file
if((size = _realNode->read(image)) > 0)
return size;
// File must actually exist
if(!(exists() && isReadable()))
throw "File not found/readable";
// Otherwise, assume the file is either gzip'ed or not compressed at all
gzFile f = gzopen(getPath().c_str(), "rb");
if(f)
{
image = new uInt8[512 * 1024];
size = gzread(f, image, 512 * 1024);
gzclose(f);
if(size == 0)
{
delete[] image; image = 0;
throw "Zero-byte file";
}
return size;
}
else
throw "ZLIB open/read error";
}