406 lines
12 KiB
C++
406 lines
12 KiB
C++
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/****************************************************************************
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Copyright (c) 2006, Radon Labs GmbH
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "stdneb.h"
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#include "io/zipfs/ziparchive.h"
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#include "io/zipfs/zipfileentry.h"
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#include "io/zipfs/zipdirentry.h"
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#include "io/assignregistry.h"
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namespace IO
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{
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__ImplementClass(IO::ZipArchive, 'ZPAR', IO::ArchiveBase);
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using namespace Util;
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//------------------------------------------------------------------------------
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/**
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*/
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ZipArchive::ZipArchive() :
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zipFileHandle(0)
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{
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// empty
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}
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//------------------------------------------------------------------------------
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/**
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*/
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ZipArchive::~ZipArchive()
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{
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if (this->IsValid())
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{
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this->Discard();
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}
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}
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//------------------------------------------------------------------------------
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/**
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This opens the zip archive and reads the table of content as a
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tree of ZipDirEntry and ZipFileEntry objects.
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*/
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bool
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ZipArchive::Setup(const URI& zipFileURI)
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{
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n_assert(!this->IsValid());
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n_assert(0 == this->zipFileHandle);
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n_warning(zipFileURI.AsString().AsCharPtr());
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if (ArchiveBase::Setup(zipFileURI))
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{
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// extract the root location of the zip archive
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this->rootPath = this->uri.LocalPath().ExtractDirName();
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n_warning( this->rootPath.AsCharPtr());
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// open the zip file
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URI absPath = AssignRegistry::Instance()->ResolveAssigns(this->uri);
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String localPath = absPath.LocalPath();
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#if WIN32
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// localPath.Append(".zip");
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#endif
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n_warning( localPath.AsCharPtr());
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this->zipFileHandle = unzOpen(localPath.AsCharPtr());
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if (0 == this->zipFileHandle)
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{
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return false;
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}
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// read the table of contents
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this->ParseTableOfContents();
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return true;
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}
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else
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{
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return false;
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}
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}
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//------------------------------------------------------------------------------
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/**
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This closes the zip archive, releasing the table of contents and
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closing the zip file.
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*/
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void
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ZipArchive::Discard()
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{
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n_assert(this->IsValid());
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unzClose(this->zipFileHandle);
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this->zipFileHandle = 0;
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ArchiveBase::Discard();
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}
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//------------------------------------------------------------------------------
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/**
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Internal method which parses the table of contents of the into a tree
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of ZipDirEntry and ZipFileEntry objects.
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*/
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void
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ZipArchive::ParseTableOfContents()
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{
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n_assert(this->IsValid());
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// for each entry of the zip file...
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int walkRes = unzGoToFirstFile(this->zipFileHandle);
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if (UNZ_OK == walkRes) do
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{
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// get info about current file
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char curFileName[512];
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int fileInfoRes = unzGetCurrentFileInfo(this->zipFileHandle,
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0,
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curFileName,
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sizeof(curFileName),
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0, 0, 0, 0);
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n_assert(UNZ_OK == fileInfoRes);
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this->AddEntry(curFileName);
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walkRes = unzGoToNextFile(this->zipFileHandle);
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}
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while (UNZ_OK == walkRes);
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if (UNZ_END_OF_LIST_OF_FILE != walkRes)
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{
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n_error("ZipArchive: error in parsing zip file '%s'!\n", this->uri.AsString().AsCharPtr());
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}
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}
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//------------------------------------------------------------------------------
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/**
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This will create a new ZipFileEntry or ZipDirEntry object and sort it into
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the entry tree. Missing ZipDirEntry objects in the path will be created as
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needed.
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*/
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void
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ZipArchive::AddEntry(const String& path)
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{
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n_assert(path.IsValid());
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// first check if the path end with a slash, if
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// yes it's a directory
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bool isDirectory = false;
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char lastChar = path[path.Length() - 1];
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if ((lastChar == '/') || (lastChar == '\\'))
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{
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isDirectory = true;
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}
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// tokenize the path into directory and filename components
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Array<String> pathTokens;
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path.Tokenize("/\\", pathTokens);
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ZipDirEntry* dirEntry = &(this->rootEntry);
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if (pathTokens.Size() > 1)
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{
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// find directory, create missing directory entries on the way
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IndexT i;
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for (i = 0; i < (pathTokens.Size() - 1); i++)
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{
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StringAtom curToken = pathTokens[i];
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ZipDirEntry* childDirEntry = dirEntry->FindDirEntry(curToken);
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if (0 == childDirEntry)
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{
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// need to create new dir entry
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childDirEntry = dirEntry->AddDirEntry(curToken);
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}
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dirEntry = childDirEntry;
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}
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}
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// create final entry and add to last dir entry
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StringAtom finalName(pathTokens.Back());
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if (isDirectory)
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{
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dirEntry->AddDirEntry(finalName);
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}
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else
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{
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ZipFileEntry* finalFileEntry = dirEntry->AddFileEntry(finalName);
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finalFileEntry->Setup(finalName, this->zipFileHandle, &this->archiveCritSect);
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}
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}
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//------------------------------------------------------------------------------
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/**
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Test if an absolute path points into the zip archive and
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return a locale path into the zip archive. This will not test, whether
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the file or directory inside the zip archive actually exists, only
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if the path points INTO the zip archive by checking against
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the location directory of the zip archive.
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*/
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String
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ZipArchive::ConvertToPathInArchive(const Util::String& absPath) const
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{
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// test if the absolute path starts with our root path
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IndexT rootPathIndex = absPath.FindStringIndex(this->rootPath, 0);
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if (0 == rootPathIndex)
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{
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// strip the root path from the absolute path
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String localPath = absPath;
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localPath.SubstituteString(this->rootPath, "");
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return localPath;
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}
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// path doesn't point into this archive
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return "";
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}
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//------------------------------------------------------------------------------
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/**
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*/
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const ZipFileEntry*
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ZipArchive::FindFileEntry(const String& pathInZipArchive) const
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{
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// convert to local path into zip archive and split into components,
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// fail if string doesn't point into archive
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Array<String> pathTokens;
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if (0 == pathInZipArchive.Tokenize("/\\", pathTokens))
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{
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return 0;
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}
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// n_warning(pathInZipArchive.AsCharPtr());
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// walk directory entries
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const ZipDirEntry* dirEntry = &this->rootEntry;
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if (pathTokens.Size() > 1)
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{
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IndexT i;
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#if WIN32
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for (i = 1; i < (pathTokens.Size() - 1); i++)
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{
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ZipDirEntry* subDirEntry = dirEntry->FindDirEntry(pathTokens[i]);
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if (0 != subDirEntry)
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{
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dirEntry = subDirEntry;
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}
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else
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{
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// missing subdirectory
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return 0;
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}
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}
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#else
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for (i = 1; i < (pathTokens.Size() - 1); i++)
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{
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ZipDirEntry* subDirEntry = dirEntry->FindDirEntry(pathTokens[i]);
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if (0 != subDirEntry)
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{
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dirEntry = subDirEntry;
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}
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else
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{
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// missing subdirectory
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n_warning("zip file missing dic");
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n_warning(pathTokens[i].AsCharPtr());
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return 0;
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}
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}
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#endif
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}
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// find the final file entry
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const ZipFileEntry* fileEntry = dirEntry->FindFileEntry(pathTokens.Back());
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return fileEntry;
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}
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//------------------------------------------------------------------------------
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/**
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*/
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ZipFileEntry*
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ZipArchive::FindFileEntry(const String& pathInZipArchive)
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{
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const ZipArchive *a = static_cast<const ZipArchive*>(this);
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return const_cast<ZipFileEntry*>(a->FindFileEntry(pathInZipArchive));
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}
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//------------------------------------------------------------------------------
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/**
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*/
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const ZipDirEntry*
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ZipArchive::FindDirEntry(const String& pathInZipArchive) const
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{
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// convert to local path into zip archive and split into components,
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// fail if string doesn't point into archive
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Array<String> pathTokens;
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if (0 == pathInZipArchive.Tokenize("/\\", pathTokens))
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{
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return 0;
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}
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// walk directory entries
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const ZipDirEntry* dirEntry = &(this->rootEntry);
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IndexT i;
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for (i = 0; i < pathTokens.Size(); i++)
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{
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ZipDirEntry* subDirEntry = dirEntry->FindDirEntry(pathTokens[i]);
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if (0 != subDirEntry)
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{
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dirEntry = subDirEntry;
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}
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else
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{
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// missing subdirectory
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return 0;
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}
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}
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return dirEntry;
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}
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//------------------------------------------------------------------------------
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/**
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*/
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Array<String>
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ZipArchive::ListFiles(const String& dirPathInZipArchive, const String& pattern) const
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{
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Array<String> result;
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const ZipDirEntry* dirEntry = this->FindDirEntry(dirPathInZipArchive);
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if (0 != dirEntry)
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{
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const Array<ZipFileEntry>& files = dirEntry->GetFileEntries();
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String fileName;
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IndexT i;
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for (i = 0; i < files.Size(); i++)
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{
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fileName = files[i].GetName().Value();
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if (String::MatchPattern(fileName, pattern))
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{
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result.Append(fileName);
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}
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}
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}
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return result;
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}
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//------------------------------------------------------------------------------
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/**
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*/
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Array<String>
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ZipArchive::ListDirectories(const String& dirPathInZipArchive, const String& pattern) const
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{
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Array<String> result;
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const ZipDirEntry* dirEntry = this->FindDirEntry(dirPathInZipArchive);
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if (0 != dirEntry)
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{
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const Array<ZipDirEntry>& subDirs = dirEntry->GetDirEntries();
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String subDirName;
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IndexT i;
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for (i = 0; i < subDirs.Size(); i++)
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{
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subDirName = subDirs[i].GetName().Value();
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if (String::MatchPattern(subDirName, pattern))
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{
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result.Append(subDirName);
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}
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}
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}
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return result;
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}
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//------------------------------------------------------------------------------
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/**
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This method takes a normal "file:" scheme URI and convertes it into
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a "zip:" scheme URI which points to the file in this zip archive. This
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is used by the IoServer for transparent file access into zip archives.
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*/
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URI
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ZipArchive::ConvertToArchiveURI(const URI& fileURI) const
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{
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n_assert(fileURI.LocalPath().IsValid());
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// localize path into archive, fail hard if URI doesn't point into archive
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String localPath = this->ConvertToPathInArchive(fileURI.LocalPath());
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if (!localPath.IsValid())
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{
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n_error("ZipArchive::ConvertToZipURI(): file '%s' doesn't point into this zip archive (%s)!\n",
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fileURI.AsString().AsCharPtr(), this->uri.AsString().AsCharPtr());
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}
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URI zipURI = this->uri;
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zipURI.SetScheme("zip");
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String query;
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query.Append("file=");
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query.Append(localPath);
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zipURI.SetQuery(query);
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return zipURI;
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}
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} // namespace IO
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