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763 lines
19 KiB
C++
763 lines
19 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CFileSystem.h"
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#include "IReadFile.h"
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#include "IWriteFile.h"
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#include "CZipReader.h"
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#include "CFileList.h"
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#include "stdio.h"
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#include "os.h"
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#include "CReadFile.h"
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#include "CMemoryFile.h"
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#include "CLimitReadFile.h"
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#include "CWriteFile.h"
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#include <list>
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#if defined(__STRICT_ANSI__)
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#error Compiling with __STRICT_ANSI__ not supported. g++ does set this when compiling with -std=c++11 or -std=c++0x. Use instead -std=gnu++11 or -std=gnu++0x. Or use -U__STRICT_ANSI__ to disable strict ansi.
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#endif
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#if defined(_IRR_WINDOWS_API_)
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#include <direct.h> // for _chdir
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#include <io.h> // for _access
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#include <tchar.h>
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#elif (defined(_IRR_POSIX_API_) || defined(_IRR_OSX_PLATFORM_) || defined(_IRR_ANDROID_PLATFORM_))
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <climits>
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#elif defined(_IRR_EMSCRIPTEN_PLATFORM_)
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#include <unistd.h>
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#endif
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namespace irr
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{
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namespace io
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{
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//! constructor
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CFileSystem::CFileSystem()
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{
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#ifdef _DEBUG
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setDebugName("CFileSystem");
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#endif
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setFileListSystem(FILESYSTEM_NATIVE);
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//! reset current working directory
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getWorkingDirectory();
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ArchiveLoader.push_back(new CArchiveLoaderZIP(this));
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}
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//! destructor
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CFileSystem::~CFileSystem()
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{
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u32 i;
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for (i = 0; i < FileArchives.size(); ++i) {
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FileArchives[i]->drop();
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}
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for (i = 0; i < ArchiveLoader.size(); ++i) {
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ArchiveLoader[i]->drop();
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}
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}
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//! opens a file for read access
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IReadFile *CFileSystem::createAndOpenFile(const io::path &filename)
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{
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if (filename.empty())
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return 0;
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IReadFile *file = 0;
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u32 i;
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for (i = 0; i < FileArchives.size(); ++i) {
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file = FileArchives[i]->createAndOpenFile(filename);
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if (file)
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return file;
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}
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// Create the file using an absolute path so that it matches
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// the scheme used by CNullDriver::getTexture().
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return CReadFile::createReadFile(getAbsolutePath(filename));
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}
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//! Creates an IReadFile interface for treating memory like a file.
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IReadFile *CFileSystem::createMemoryReadFile(const void *memory, s32 len,
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const io::path &fileName, bool deleteMemoryWhenDropped)
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{
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if (!memory)
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return 0;
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else
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return new CMemoryReadFile(memory, len, fileName, deleteMemoryWhenDropped);
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}
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//! Creates an IReadFile interface for reading files inside files
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IReadFile *CFileSystem::createLimitReadFile(const io::path &fileName,
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IReadFile *alreadyOpenedFile, long pos, long areaSize)
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{
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if (!alreadyOpenedFile)
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return 0;
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else
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return new CLimitReadFile(alreadyOpenedFile, pos, areaSize, fileName);
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}
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//! Creates an IReadFile interface for treating memory like a file.
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IWriteFile *CFileSystem::createMemoryWriteFile(void *memory, s32 len,
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const io::path &fileName, bool deleteMemoryWhenDropped)
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{
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if (!memory)
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return 0;
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else
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return new CMemoryWriteFile(memory, len, fileName, deleteMemoryWhenDropped);
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}
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//! Opens a file for write access.
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IWriteFile *CFileSystem::createAndWriteFile(const io::path &filename, bool append)
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{
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return CWriteFile::createWriteFile(filename, append);
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}
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//! Adds an external archive loader to the engine.
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void CFileSystem::addArchiveLoader(IArchiveLoader *loader)
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{
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if (!loader)
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return;
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loader->grab();
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ArchiveLoader.push_back(loader);
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}
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//! Returns the total number of archive loaders added.
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u32 CFileSystem::getArchiveLoaderCount() const
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{
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return ArchiveLoader.size();
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}
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//! Gets the archive loader by index.
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IArchiveLoader *CFileSystem::getArchiveLoader(u32 index) const
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{
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if (index < ArchiveLoader.size())
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return ArchiveLoader[index];
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else
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return 0;
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}
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//! move the hirarchy of the filesystem. moves sourceIndex relative up or down
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bool CFileSystem::moveFileArchive(u32 sourceIndex, s32 relative)
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{
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bool r = false;
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const s32 dest = (s32)sourceIndex + relative;
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const s32 dir = relative < 0 ? -1 : 1;
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const s32 sourceEnd = ((s32)FileArchives.size()) - 1;
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IFileArchive *t;
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for (s32 s = (s32)sourceIndex; s != dest; s += dir) {
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if (s < 0 || s > sourceEnd || s + dir < 0 || s + dir > sourceEnd)
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continue;
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t = FileArchives[s + dir];
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FileArchives[s + dir] = FileArchives[s];
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FileArchives[s] = t;
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r = true;
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}
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return r;
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}
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//! Adds an archive to the file system.
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bool CFileSystem::addFileArchive(const io::path &filename, bool ignoreCase,
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bool ignorePaths, E_FILE_ARCHIVE_TYPE archiveType,
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const core::stringc &password,
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IFileArchive **retArchive)
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{
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IFileArchive *archive = 0;
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bool ret = false;
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// see if archive is already added
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s32 i;
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// do we know what type it should be?
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if (archiveType == EFAT_UNKNOWN) {
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// try to load archive based on file name
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for (i = ArchiveLoader.size() - 1; i >= 0; --i) {
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if (ArchiveLoader[i]->isALoadableFileFormat(filename)) {
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archive = ArchiveLoader[i]->createArchive(filename, ignoreCase, ignorePaths);
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if (archive)
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break;
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}
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}
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// try to load archive based on content
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if (!archive) {
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io::IReadFile *file = createAndOpenFile(filename);
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if (file) {
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for (i = ArchiveLoader.size() - 1; i >= 0; --i) {
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file->seek(0);
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if (ArchiveLoader[i]->isALoadableFileFormat(file)) {
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file->seek(0);
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archive = ArchiveLoader[i]->createArchive(file, ignoreCase, ignorePaths);
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if (archive)
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break;
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}
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}
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file->drop();
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}
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}
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} else {
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// try to open archive based on archive loader type
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io::IReadFile *file = 0;
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for (i = ArchiveLoader.size() - 1; i >= 0; --i) {
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if (ArchiveLoader[i]->isALoadableFileFormat(archiveType)) {
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// attempt to open file
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if (!file)
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file = createAndOpenFile(filename);
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// is the file open?
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if (file) {
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// attempt to open archive
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file->seek(0);
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if (ArchiveLoader[i]->isALoadableFileFormat(file)) {
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file->seek(0);
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archive = ArchiveLoader[i]->createArchive(file, ignoreCase, ignorePaths);
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if (archive)
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break;
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}
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} else {
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// couldn't open file
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break;
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}
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}
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}
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// if open, close the file
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if (file)
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file->drop();
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}
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if (archive) {
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FileArchives.push_back(archive);
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if (password.size())
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archive->Password = password;
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if (retArchive)
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*retArchive = archive;
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ret = true;
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} else {
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os::Printer::log("Could not create archive for", filename, ELL_ERROR);
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}
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return ret;
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}
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bool CFileSystem::addFileArchive(IReadFile *file, bool ignoreCase,
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bool ignorePaths, E_FILE_ARCHIVE_TYPE archiveType,
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const core::stringc &password, IFileArchive **retArchive)
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{
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if (!file)
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return false;
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if (file) {
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IFileArchive *archive = 0;
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s32 i;
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if (archiveType == EFAT_UNKNOWN) {
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// try to load archive based on file name
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for (i = ArchiveLoader.size() - 1; i >= 0; --i) {
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if (ArchiveLoader[i]->isALoadableFileFormat(file->getFileName())) {
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archive = ArchiveLoader[i]->createArchive(file, ignoreCase, ignorePaths);
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if (archive)
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break;
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}
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}
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// try to load archive based on content
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if (!archive) {
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for (i = ArchiveLoader.size() - 1; i >= 0; --i) {
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file->seek(0);
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if (ArchiveLoader[i]->isALoadableFileFormat(file)) {
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file->seek(0);
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archive = ArchiveLoader[i]->createArchive(file, ignoreCase, ignorePaths);
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if (archive)
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break;
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}
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}
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}
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} else {
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// try to open archive based on archive loader type
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for (i = ArchiveLoader.size() - 1; i >= 0; --i) {
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if (ArchiveLoader[i]->isALoadableFileFormat(archiveType)) {
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// attempt to open archive
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file->seek(0);
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if (ArchiveLoader[i]->isALoadableFileFormat(file)) {
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file->seek(0);
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archive = ArchiveLoader[i]->createArchive(file, ignoreCase, ignorePaths);
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if (archive)
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break;
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}
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}
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}
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}
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if (archive) {
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FileArchives.push_back(archive);
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if (password.size())
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archive->Password = password;
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if (retArchive)
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*retArchive = archive;
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return true;
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} else {
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os::Printer::log("Could not create archive for", file->getFileName(), ELL_ERROR);
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}
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}
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return false;
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}
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//! Adds an archive to the file system.
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bool CFileSystem::addFileArchive(IFileArchive *archive)
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{
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if (archive) {
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for (u32 i = 0; i < FileArchives.size(); ++i) {
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if (archive == FileArchives[i]) {
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return false;
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}
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}
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FileArchives.push_back(archive);
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archive->grab();
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return true;
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}
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return false;
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}
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//! removes an archive from the file system.
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bool CFileSystem::removeFileArchive(u32 index)
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{
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bool ret = false;
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if (index < FileArchives.size()) {
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FileArchives[index]->drop();
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FileArchives.erase(index);
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ret = true;
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}
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return ret;
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}
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//! removes an archive from the file system.
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bool CFileSystem::removeFileArchive(const io::path &filename)
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{
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const path absPath = getAbsolutePath(filename);
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for (u32 i = 0; i < FileArchives.size(); ++i) {
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if (absPath == FileArchives[i]->getFileList()->getPath())
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return removeFileArchive(i);
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}
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return false;
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}
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//! Removes an archive from the file system.
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bool CFileSystem::removeFileArchive(const IFileArchive *archive)
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{
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for (u32 i = 0; i < FileArchives.size(); ++i) {
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if (archive == FileArchives[i]) {
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return removeFileArchive(i);
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}
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}
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return false;
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}
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//! gets an archive
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u32 CFileSystem::getFileArchiveCount() const
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{
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return FileArchives.size();
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}
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IFileArchive *CFileSystem::getFileArchive(u32 index)
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{
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return index < getFileArchiveCount() ? FileArchives[index] : 0;
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}
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//! Returns the string of the current working directory
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const io::path &CFileSystem::getWorkingDirectory()
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{
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EFileSystemType type = FileSystemType;
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if (type != FILESYSTEM_NATIVE) {
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type = FILESYSTEM_VIRTUAL;
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} else {
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#if defined(_IRR_WINDOWS_API_)
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fschar_t tmp[_MAX_PATH];
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_getcwd(tmp, _MAX_PATH);
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WorkingDirectory[FILESYSTEM_NATIVE] = tmp;
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WorkingDirectory[FILESYSTEM_NATIVE].replace('\\', '/');
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#endif
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#if (defined(_IRR_POSIX_API_) || defined(_IRR_OSX_PLATFORM_))
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// getting the CWD is rather complex as we do not know the size
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// so try it until the call was successful
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// Note that neither the first nor the second parameter may be 0 according to POSIX
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u32 pathSize = 256;
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char *tmpPath = new char[pathSize];
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while ((pathSize < (1 << 16)) && !(getcwd(tmpPath, pathSize))) {
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delete[] tmpPath;
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pathSize *= 2;
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tmpPath = new char[pathSize];
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}
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if (tmpPath) {
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WorkingDirectory[FILESYSTEM_NATIVE] = tmpPath;
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delete[] tmpPath;
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}
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#endif
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WorkingDirectory[type].validate();
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}
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return WorkingDirectory[type];
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}
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//! Changes the current Working Directory to the given string.
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bool CFileSystem::changeWorkingDirectoryTo(const io::path &newDirectory)
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{
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bool success = false;
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if (FileSystemType != FILESYSTEM_NATIVE) {
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WorkingDirectory[FILESYSTEM_VIRTUAL] = newDirectory;
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// is this empty string constant really intended?
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flattenFilename(WorkingDirectory[FILESYSTEM_VIRTUAL], _IRR_TEXT(""));
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success = true;
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} else {
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WorkingDirectory[FILESYSTEM_NATIVE] = newDirectory;
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#if defined(_MSC_VER)
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success = (_chdir(newDirectory.c_str()) == 0);
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#else
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success = (chdir(newDirectory.c_str()) == 0);
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#endif
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}
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return success;
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}
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io::path CFileSystem::getAbsolutePath(const io::path &filename) const
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{
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if (filename.empty())
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return filename;
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#if defined(_IRR_WINDOWS_API_)
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fschar_t *p = 0;
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fschar_t fpath[_MAX_PATH];
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p = _fullpath(fpath, filename.c_str(), _MAX_PATH);
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core::stringc tmp(p);
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tmp.replace('\\', '/');
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return tmp;
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#elif (defined(_IRR_POSIX_API_) || defined(_IRR_OSX_PLATFORM_))
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c8 *p = 0;
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c8 fpath[4096];
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fpath[0] = 0;
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p = realpath(filename.c_str(), fpath);
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if (!p) {
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// content in fpath is unclear at this point
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if (!fpath[0]) { // seems like fpath wasn't altered, use our best guess
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io::path tmp(filename);
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return flattenFilename(tmp);
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} else
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return io::path(fpath);
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}
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if (filename[filename.size() - 1] == '/')
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return io::path(p) + _IRR_TEXT("/");
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else
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return io::path(p);
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#else
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return io::path(filename);
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#endif
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}
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//! returns the directory part of a filename, i.e. all until the first
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//! slash or backslash, excluding it. If no directory path is prefixed, a '.'
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//! is returned.
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io::path CFileSystem::getFileDir(const io::path &filename) const
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{
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// find last forward or backslash
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s32 lastSlash = filename.findLast('/');
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const s32 lastBackSlash = filename.findLast('\\');
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lastSlash = lastSlash > lastBackSlash ? lastSlash : lastBackSlash;
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if ((u32)lastSlash < filename.size())
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return filename.subString(0, lastSlash);
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else
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return _IRR_TEXT(".");
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}
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//! returns the base part of a filename, i.e. all except for the directory
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//! part. If no directory path is prefixed, the full name is returned.
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io::path CFileSystem::getFileBasename(const io::path &filename, bool keepExtension) const
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{
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// find last forward or backslash
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s32 lastSlash = filename.findLast('/');
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const s32 lastBackSlash = filename.findLast('\\');
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lastSlash = core::max_(lastSlash, lastBackSlash);
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// get number of chars after last dot
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s32 end = 0;
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if (!keepExtension) {
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// take care to search only after last slash to check only for
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// dots in the filename
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end = filename.findLast('.');
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if (end == -1 || end < lastSlash)
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end = 0;
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else
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end = filename.size() - end;
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}
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if ((u32)lastSlash < filename.size())
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return filename.subString(lastSlash + 1, filename.size() - lastSlash - 1 - end);
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else if (end != 0)
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return filename.subString(0, filename.size() - end);
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else
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return filename;
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}
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//! flatten a path and file name for example: "/you/me/../." becomes "/you"
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io::path &CFileSystem::flattenFilename(io::path &directory, const io::path &root) const
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{
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directory.replace('\\', '/');
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if (directory.lastChar() != '/')
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directory.append('/');
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io::path dir;
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io::path subdir;
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s32 lastpos = 0;
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s32 pos = 0;
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bool lastWasRealDir = false;
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while ((pos = directory.findNext('/', lastpos)) >= 0) {
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subdir = directory.subString(lastpos, pos - lastpos + 1);
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if (subdir == _IRR_TEXT("../")) {
|
|
if (lastWasRealDir) {
|
|
deletePathFromPath(dir, 2);
|
|
lastWasRealDir = (dir.size() != 0);
|
|
} else {
|
|
dir.append(subdir);
|
|
lastWasRealDir = false;
|
|
}
|
|
} else if (subdir == _IRR_TEXT("/")) {
|
|
dir = root;
|
|
} else if (subdir != _IRR_TEXT("./")) {
|
|
dir.append(subdir);
|
|
lastWasRealDir = true;
|
|
}
|
|
|
|
lastpos = pos + 1;
|
|
}
|
|
directory = dir;
|
|
return directory;
|
|
}
|
|
|
|
//! Get the relative filename, relative to the given directory
|
|
path CFileSystem::getRelativeFilename(const path &filename, const path &directory) const
|
|
{
|
|
if (filename.empty() || directory.empty())
|
|
return filename;
|
|
|
|
io::path path1, file, ext;
|
|
core::splitFilename(getAbsolutePath(filename), &path1, &file, &ext);
|
|
io::path path2(getAbsolutePath(directory));
|
|
std::list<io::path> list1, list2;
|
|
path1.split(list1, _IRR_TEXT("/\\"), 2);
|
|
path2.split(list2, _IRR_TEXT("/\\"), 2);
|
|
std::list<io::path>::const_iterator it1, it2;
|
|
it1 = list1.begin();
|
|
it2 = list2.begin();
|
|
|
|
#if defined(_IRR_WINDOWS_API_)
|
|
fschar_t partition1 = 0, partition2 = 0;
|
|
io::path prefix1, prefix2;
|
|
if (it1 != list1.end())
|
|
prefix1 = *it1;
|
|
if (it2 != list2.end())
|
|
prefix2 = *it2;
|
|
if (prefix1.size() > 1 && prefix1[1] == _IRR_TEXT(':'))
|
|
partition1 = core::locale_lower(prefix1[0]);
|
|
if (prefix2.size() > 1 && prefix2[1] == _IRR_TEXT(':'))
|
|
partition2 = core::locale_lower(prefix2[0]);
|
|
|
|
// must have the same prefix or we can't resolve it to a relative filename
|
|
if (partition1 != partition2) {
|
|
return filename;
|
|
}
|
|
#endif
|
|
|
|
for (; it1 != list1.end() && it2 != list2.end()
|
|
#if defined(_IRR_WINDOWS_API_)
|
|
&& (io::path(*it1).make_lower() == io::path(*it2).make_lower())
|
|
#else
|
|
&& (*it1 == *it2)
|
|
#endif
|
|
;) {
|
|
++it1;
|
|
++it2;
|
|
}
|
|
path1 = _IRR_TEXT("");
|
|
for (; it2 != list2.end(); ++it2)
|
|
path1 += _IRR_TEXT("../");
|
|
while (it1 != list1.end()) {
|
|
path1 += *it1++;
|
|
path1 += _IRR_TEXT('/');
|
|
}
|
|
path1 += file;
|
|
if (ext.size()) {
|
|
path1 += _IRR_TEXT('.');
|
|
path1 += ext;
|
|
}
|
|
return path1;
|
|
}
|
|
|
|
//! Sets the current file systen type
|
|
EFileSystemType CFileSystem::setFileListSystem(EFileSystemType listType)
|
|
{
|
|
EFileSystemType current = FileSystemType;
|
|
FileSystemType = listType;
|
|
return current;
|
|
}
|
|
|
|
//! Creates a list of files and directories in the current working directory
|
|
IFileList *CFileSystem::createFileList()
|
|
{
|
|
CFileList *r = 0;
|
|
io::path Path = getWorkingDirectory();
|
|
Path.replace('\\', '/');
|
|
if (!Path.empty() && Path.lastChar() != '/')
|
|
Path.append('/');
|
|
|
|
//! Construct from native filesystem
|
|
if (FileSystemType == FILESYSTEM_NATIVE) {
|
|
// --------------------------------------------
|
|
//! Windows version
|
|
#ifdef _IRR_WINDOWS_API_
|
|
|
|
r = new CFileList(Path, true, false);
|
|
|
|
// intptr_t is optional but supported by MinGW since 2007 or earlier.
|
|
intptr_t hFile;
|
|
struct _tfinddata_t c_file;
|
|
if ((hFile = _tfindfirst(_T("*"), &c_file)) != (intptr_t)(-1L)) {
|
|
do {
|
|
r->addItem(Path + c_file.name, 0, c_file.size, (_A_SUBDIR & c_file.attrib) != 0, 0);
|
|
} while (_tfindnext(hFile, &c_file) == 0);
|
|
|
|
_findclose(hFile);
|
|
}
|
|
|
|
#endif
|
|
|
|
// --------------------------------------------
|
|
//! Linux version
|
|
#if (defined(_IRR_POSIX_API_) || defined(_IRR_OSX_PLATFORM_))
|
|
|
|
r = new CFileList(Path, false, false);
|
|
|
|
r->addItem(Path + _IRR_TEXT(".."), 0, 0, true, 0);
|
|
|
|
//! We use the POSIX compliant methods instead of scandir
|
|
DIR *dirHandle = opendir(Path.c_str());
|
|
if (dirHandle) {
|
|
struct dirent *dirEntry;
|
|
while ((dirEntry = readdir(dirHandle))) {
|
|
u32 size = 0;
|
|
bool isDirectory = false;
|
|
|
|
if ((strcmp(dirEntry->d_name, ".") == 0) ||
|
|
(strcmp(dirEntry->d_name, "..") == 0)) {
|
|
continue;
|
|
}
|
|
struct stat buf;
|
|
if (stat(dirEntry->d_name, &buf) == 0) {
|
|
size = buf.st_size;
|
|
isDirectory = S_ISDIR(buf.st_mode);
|
|
}
|
|
#if !defined(_IRR_SOLARIS_PLATFORM_) && !defined(__CYGWIN__) && !defined(__HAIKU__)
|
|
// only available on some systems
|
|
else {
|
|
isDirectory = dirEntry->d_type == DT_DIR;
|
|
}
|
|
#endif
|
|
|
|
r->addItem(Path + dirEntry->d_name, 0, size, isDirectory, 0);
|
|
}
|
|
closedir(dirHandle);
|
|
}
|
|
#endif
|
|
} else {
|
|
//! create file list for the virtual filesystem
|
|
r = new CFileList(Path, false, false);
|
|
|
|
//! add relative navigation
|
|
SFileListEntry e2;
|
|
SFileListEntry e3;
|
|
|
|
//! PWD
|
|
r->addItem(Path + _IRR_TEXT("."), 0, 0, true, 0);
|
|
|
|
//! parent
|
|
r->addItem(Path + _IRR_TEXT(".."), 0, 0, true, 0);
|
|
|
|
//! merge archives
|
|
for (u32 i = 0; i < FileArchives.size(); ++i) {
|
|
const IFileList *merge = FileArchives[i]->getFileList();
|
|
|
|
for (u32 j = 0; j < merge->getFileCount(); ++j) {
|
|
if (core::isInSameDirectory(Path, merge->getFullFileName(j)) == 0) {
|
|
r->addItem(merge->getFullFileName(j), merge->getFileOffset(j), merge->getFileSize(j), merge->isDirectory(j), 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (r)
|
|
r->sort();
|
|
return r;
|
|
}
|
|
|
|
//! Creates an empty filelist
|
|
IFileList *CFileSystem::createEmptyFileList(const io::path &path, bool ignoreCase, bool ignorePaths)
|
|
{
|
|
return new CFileList(path, ignoreCase, ignorePaths);
|
|
}
|
|
|
|
//! determines if a file exists and would be able to be opened.
|
|
bool CFileSystem::existFile(const io::path &filename) const
|
|
{
|
|
for (u32 i = 0; i < FileArchives.size(); ++i)
|
|
if (FileArchives[i]->getFileList()->findFile(filename) != -1)
|
|
return true;
|
|
|
|
#if defined(_MSC_VER)
|
|
return (_access(filename.c_str(), 0) != -1);
|
|
#elif defined(F_OK)
|
|
return (access(filename.c_str(), F_OK) != -1);
|
|
#else
|
|
return (access(filename.c_str(), 0) != -1);
|
|
#endif
|
|
}
|
|
|
|
//! creates a filesystem which is able to open files from the ordinary file system,
|
|
//! and out of zipfiles, which are able to be added to the filesystem.
|
|
IFileSystem *createFileSystem()
|
|
{
|
|
return new CFileSystem();
|
|
}
|
|
|
|
} // end namespace irr
|
|
} // end namespace io
|