在Ogre中实现Mpq文件格式的支持

基于StormLib,实现的一个MpqFileSystem，没有写入功能，因为游戏的资源包通常没有读取的需求，打包解包工具网上可以找到很多，就不再推荐了。

#ifndef __Mpq_H__
#define __Mpq_H__#include "OgrePrerequisites.h"#include "OgreArchive.h"
#include "OgreArchiveFactory.h"#include "stormlib/StormLib.h"// Forward declaration for zziplib to avoid header file dependency.namespace Ogre {/** Specialisation of the Archive class to allow reading of files from a zipformat source archive.@remarksThis archive format supports all archives compressed in the standardzip format, including iD pk3 files.*/class _OgreExport MpqArchive : public Archive {protected:/// Handle to root zip fileHANDLE m_hMpq;/// Handle any errors from zzipvoid checkZzipError(int zzipError, const String& operation) const;/// File list (since zziplib seems to only allow scanning of dir tree once)FileInfoList mFileList;public:MpqArchive(const String& name, const String& archType );~MpqArchive();/// @copydoc Archive::isCaseSensitivebool isCaseSensitive(void) const { return false; }/// @copydoc Archive::loadvoid load();/// @copydoc Archive::unloadvoid unload();/// @copydoc Archive::openDataStreamPtr open(const String& filename) const;/// @copydoc Archive::listStringVectorPtr list(bool recursive = true, bool dirs = false);/// @copydoc Archive::listFileInfoFileInfoListPtr listFileInfo(bool recursive = true, bool dirs = false);/// @copydoc Archive::findStringVectorPtr find(const String& pattern, bool recursive = true,bool dirs = false);/// @copydoc Archive::findFileInfoFileInfoListPtr findFileInfo(const String& pattern, bool recursive = true,bool dirs = false);/// new add by lingbo \ to /void stringRightToLeft(String& inputStr) const;/// new add by lingbo / to \void stringLeftToRight(String& inputStr) const;/// @copydoc Archive::existsbool exists(const String& filename);};/** Specialisation of ArchiveFactory for Zip files. */class _OgrePrivate MpqArchiveFactory : public ArchiveFactory{public:virtual ~MpqArchiveFactory() {}/// @copydoc FactoryObj::getTypeconst String& getType(void) const;/// @copydoc FactoryObj::createInstanceArchive *createInstance( const String& name ) {return new MpqArchive(name, "Mpq");}/// @copydoc FactoryObj::destroyInstancevoid destroyInstance( Archive* arch) { delete arch; }};/** Specialisation of DataStream to handle streaming data from zip archives. */class _OgrePrivate MpqDataStream : public DataStream{protected:HANDLE m_hFile;public:/// Unnamed constructorMpqDataStream(HANDLE hFile, size_t uncompressedSize);/// Constructor for creating named streamsMpqDataStream(const String& name, HANDLE hFile, size_t uncompressedSize);~MpqDataStream();/// @copydoc DataStream::readsize_t read(void* buf, size_t count);/// @copydoc DataStream::skipvoid skip(long count);/// @copydoc DataStream::seekvoid seek( size_t pos );/// @copydoc DataStream::seeksize_t tell(void) const;/// @copydoc DataStream::eofbool eof(void) const;/// @copydoc DataStream::closevoid close(void);};
}#endif

#include "OgreStableHeaders.h"#include "OgreMpq.h"#include "OgreLogManager.h"
#include "OgreException.h"
#include "OgreStringVector.h"
#include "OgreRoot.h"#include <zzip/zzip.h>namespace Ogre {//-----------------------------------------------------------------------MpqArchive::MpqArchive(const String& name, const String& archType ): Archive(name, archType), m_hMpq(0){}//-----------------------------------------------------------------------MpqArchive::~MpqArchive(){unload();}//-----------------------------------------------------------------------void MpqArchive::stringLeftToRight(String& inputStr) const{for (String::iterator it = inputStr.begin();it!=inputStr.end(); it++){if ((*it) == '/'){(*it) = '\\';}}}//-----------------------------------------------------------------------void MpqArchive::stringRightToLeft(String& inputStr) const{for (String::iterator it = inputStr.begin();it!=inputStr.end(); it++){if ((*it) == '\\'){(*it) = '/';}}}//-----------------------------------------------------------------------void MpqArchive::load(){if (!m_hMpq){//open mpq Archive into HandleMpqif (SFileOpenArchive(mName.c_str(),0,0,&m_hMpq)){SFILE_FIND_DATA sfd;//PARAM2 NULL表示用MPQ内置的filelist,Param3 "*" find any fileHANDLE hFind = SFileFindFirstFile(m_hMpq,"*",&sfd,NULL);if (hFind){FileInfo info;info.archive  = this;//这一步是把转义字符'\\'换成'/'String tempStr = sfd.cFileName;stringRightToLeft(tempStr);StringUtil::splitFilename(tempStr,info.basename,info.path);info.filename         = tempStr;info.compressedSize   = sfd.dwCompSize;info.uncompressedSize = sfd.dwFileSize;mFileList.push_back(info);while(1){SFILE_FIND_DATA sfdTmp;if (SFileFindNextFile(hFind,&sfdTmp)){FileInfo info;info.archive  = this;String tempStr = sfdTmp.cFileName;stringRightToLeft(tempStr);StringUtil::splitFilename(tempStr,info.basename,info.path);info.filename         = tempStr;info.compressedSize   = sfdTmp.dwCompSize;info.uncompressedSize = sfdTmp.dwFileSize;mFileList.push_back(info);}else{SFileFindClose(hFind);break;}}}}}}//-----------------------------------------------------------------------void MpqArchive::unload(){if (m_hMpq){SFileCloseArchive(m_hMpq);m_hMpq = 0;mFileList.clear();}}//-----------------------------------------------------------------------DataStreamPtr MpqArchive::open(const String& filename) const{String tempStr = filename;stringLeftToRight(tempStr);//打开MPQ中指定的文件名的文件(第3个参数是从指定从MPQ文件中找)HANDLE hFile;if(!SFileOpenFileEx(m_hMpq,tempStr.c_str(),SFILE_OPEN_FROM_MPQ,&hFile)){//如果打开失败则输出到LOG，且返回个空指针LogManager::getSingleton().logMessage(mName + " - Unable to open file " + tempStr + ", error was '" + "'" );return DataStreamPtr();}//得到文件解压缩之后的SIZEDWORD size = SFileGetFileSize(hFile);if (SFILE_INVALID_SIZE ==size){LogManager::getSingleton().logMessage(mName + " - Unable to open file " + tempStr + ", error was '" +"size"+ "'" );SFileCloseFile(hFile);return DataStreamPtr();}//如果得到正确return DataStreamPtr(new MpqDataStream(filename.c_str(),hFile,static_cast<size_t>(size)));}//-----------------------------------------------------------------------StringVectorPtr MpqArchive::list(bool recursive, bool dirs){StringVectorPtr ret = StringVectorPtr(new StringVector());FileInfoList::iterator i, iend;iend = mFileList.end();for (i = mFileList.begin(); i != iend; ++i){if ((dirs == (i->compressedSize == size_t (-1))) &&(recursive || i->path.empty())){ret->push_back(i->filename);}             }return ret;}//-----------------------------------------------------------------------FileInfoListPtr MpqArchive::listFileInfo(bool recursive, bool dirs){FileInfoList* fil = new FileInfoList();FileInfoList::const_iterator i, iend;iend = mFileList.end();for (i = mFileList.begin(); i != iend; ++i){if ((dirs == (i->compressedSize == size_t (-1))) &&(recursive || i->path.empty())){fil->push_back(*i);}}return FileInfoListPtr(fil);}//-----------------------------------------------------------------------StringVectorPtr MpqArchive::find(const String& pattern, bool recursive, bool dirs){StringVectorPtr ret = StringVectorPtr(new StringVector());// If pattern contains a directory name, do a full matchbool full_match = (pattern.find ('/') != String::npos) ||(pattern.find ('\\') != String::npos);FileInfoList::iterator i, iend;iend = mFileList.end();for (i = mFileList.begin(); i != iend; ++i){if ((dirs == (i->compressedSize == size_t (-1))) &&(recursive || full_match || i->path.empty())){// Check basename matches pattern (zip is case insensitive)if (StringUtil::match(full_match ? i->filename : i->basename, pattern, false)){ret->push_back(i->filename);}}}return ret;}//-----------------------------------------------------------------------FileInfoListPtr MpqArchive::findFileInfo(const String& pattern, bool recursive, bool dirs){FileInfoListPtr ret = FileInfoListPtr(new FileInfoList());// If pattern contains a directory name, do a full matchbool full_match = (pattern.find ('/') != String::npos) ||(pattern.find ('\\') != String::npos);FileInfoList::iterator i, iend;iend = mFileList.end();for (i = mFileList.begin(); i != iend; ++i){if ((dirs == (i->compressedSize == size_t (-1))) &&(recursive || full_match || i->path.empty())){// Check name matches pattern (zip is case insensitive)if (StringUtil::match(full_match ? i->filename : i->basename, pattern, false)){ret->push_back(*i);}}                    }return ret;}//-----------------------------------------------------------------------bool MpqArchive::exists(const String& filename){//ZZIP_STAT zstat;//int res = zzip_dir_stat(mZzipDir, filename.c_str(), &zstat, ZZIP_CASEINSENSITIVE);//return (res == ZZIP_NO_ERROR);//目的是如果输入的目录符号是'/'转化成'\\'String tempStr = filename;stringLeftToRight(tempStr);return SFileHasFile(m_hMpq,tempStr.c_str());}//-----------------------------------------------------------------------void MpqArchive::checkZzipError(int zzipError, const String& operation) const{//if (zzipError != ZZIP_NO_ERROR)//{//   String errorMsg = getZzipErrorDescription(static_cast<zzip_error_t>(zzipError));//   OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR, //       mName + " - error whilst " + operation + ": " + errorMsg,//     "MpqArchive::checkZzipError");//}}//-----------------------------------------------------------------------//-----------------------------------------------------------------------//-----------------------------------------------------------------------MpqDataStream::MpqDataStream(HANDLE hFile, size_t uncompressedSize): m_hFile(hFile){mSize = uncompressedSize;}//-----------------------------------------------------------------------MpqDataStream::MpqDataStream(const String& name, HANDLE hFile, size_t uncompressedSize):DataStream(name), m_hFile(hFile){mSize = uncompressedSize;}//-----------------------------------------------------------------------MpqDataStream::~MpqDataStream(){close();}//-----------------------------------------------------------------------size_t MpqDataStream::read(void* buf, size_t count){//return zzip_file_read(mZzipFile, (char*)buf, count);if(SFileReadFile(m_hFile,buf,static_cast<DWORD>(count))){return count;}else{return 0;}}//-----------------------------------------------------------------------void MpqDataStream::skip(long count){SFileSetFilePointer(m_hFile,count,NULL,FILE_CURRENT);}//-----------------------------------------------------------------------void MpqDataStream::seek( size_t pos ){SFileSetFilePointer(m_hFile,static_cast<long>(pos),NULL,FILE_BEGIN);}//-----------------------------------------------------------------------size_t MpqDataStream::tell(void) const{return (size_t)SFileSetFilePointer(m_hFile, 0, NULL, FILE_CURRENT);}//-----------------------------------------------------------------------bool MpqDataStream::eof(void) const{DWORD pos = SFileSetFilePointer(m_hFile, 0, NULL, FILE_CURRENT);DWORD size = SFileGetFileSize(m_hFile);return pos>=size;}//-----------------------------------------------------------------------void MpqDataStream::close(void){SFileCloseFile(m_hFile);}//-----------------------------------------------------------------------const String& MpqArchiveFactory::getType(void) const{static String name = "Mpq";return name;}}

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在Ogre中实现Mpq文件格式的支持

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