00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://www.ogre3d.org/ 00006 00007 Copyright (c) 2000-2011 Torus Knot Software Ltd 00008 00009 Permission is hereby granted, free of charge, to any person obtaining a copy 00010 of this software and associated documentation files (the "Software"), to deal 00011 in the Software without restriction, including without limitation the rights 00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00013 copies of the Software, and to permit persons to whom the Software is 00014 furnished to do so, subject to the following conditions: 00015 00016 The above copyright notice and this permission notice shall be included in 00017 all copies or substantial portions of the Software. 00018 00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00025 THE SOFTWARE. 00026 ----------------------------------------------------------------------------- 00027 */ 00028 #ifndef __Zip_H__ 00029 #define __Zip_H__ 00030 00031 #include "OgrePrerequisites.h" 00032 00033 #include "OgreArchive.h" 00034 #include "OgreArchiveFactory.h" 00035 00036 // Forward declaration for zziplib to avoid header file dependency. 00037 typedef struct zzip_dir ZZIP_DIR; 00038 typedef struct zzip_file ZZIP_FILE; 00039 00040 namespace Ogre { 00041 00054 class _OgreExport ZipArchive : public Archive 00055 { 00056 protected: 00058 ZZIP_DIR* mZzipDir; 00060 void checkZzipError(int zzipError, const String& operation) const; 00062 FileInfoList mFileList; 00063 00064 OGRE_AUTO_MUTEX 00065 public: 00066 ZipArchive(const String& name, const String& archType ); 00067 ~ZipArchive(); 00069 bool isCaseSensitive(void) const { return false; } 00070 00072 void load(); 00074 void unload(); 00075 00077 DataStreamPtr open(const String& filename, bool readOnly = true) const; 00078 00080 DataStreamPtr create(const String& filename) const; 00081 00083 void remove(const String& filename) const; 00084 00086 StringVectorPtr list(bool recursive = true, bool dirs = false); 00087 00089 FileInfoListPtr listFileInfo(bool recursive = true, bool dirs = false); 00090 00092 StringVectorPtr find(const String& pattern, bool recursive = true, 00093 bool dirs = false); 00094 00096 FileInfoListPtr findFileInfo(const String& pattern, bool recursive = true, 00097 bool dirs = false); 00098 00100 bool exists(const String& filename); 00101 00103 time_t getModifiedTime(const String& filename); 00104 }; 00105 00107 class _OgrePrivate ZipArchiveFactory : public ArchiveFactory 00108 { 00109 public: 00110 virtual ~ZipArchiveFactory() {} 00112 const String& getType(void) const; 00114 Archive *createInstance( const String& name ) 00115 { 00116 return OGRE_NEW ZipArchive(name, "Zip"); 00117 } 00119 void destroyInstance( Archive* arch) { OGRE_DELETE arch; } 00120 }; 00121 00124 template <size_t cacheSize> 00125 class StaticCache 00126 { 00127 protected: 00129 char mBuffer[cacheSize]; 00130 00132 size_t mValidBytes; 00134 size_t mPos; 00135 00136 public: 00138 StaticCache() 00139 { 00140 mValidBytes = 0; 00141 mPos = 0; 00142 } 00143 00146 size_t cacheData(const void* buf, size_t count) 00147 { 00148 assert(avail() == 0 && "It is assumed that you cache data only after you have read everything."); 00149 00150 if (count < cacheSize) 00151 { 00152 // number of bytes written is less than total size of cache 00153 if (count + mValidBytes <= cacheSize) 00154 { 00155 // just append 00156 memcpy(mBuffer + mValidBytes, buf, count); 00157 mValidBytes += count; 00158 } 00159 else 00160 { 00161 size_t begOff = count - (cacheSize - mValidBytes); 00162 // override old cache content in the beginning 00163 memmove(mBuffer, mBuffer + begOff, mValidBytes - begOff); 00164 // append new data 00165 memcpy(mBuffer + cacheSize - count, buf, count); 00166 mValidBytes = cacheSize; 00167 } 00168 mPos = mValidBytes; 00169 return count; 00170 } 00171 else 00172 { 00173 // discard all 00174 memcpy(mBuffer, (const char*)buf + count - cacheSize, cacheSize); 00175 mValidBytes = mPos = cacheSize; 00176 return cacheSize; 00177 } 00178 } 00180 size_t read(void* buf, size_t count) 00181 { 00182 size_t rb = avail(); 00183 rb = (rb < count) ? rb : count; 00184 memcpy(buf, mBuffer + mPos, rb); 00185 mPos += rb; 00186 return rb; 00187 } 00188 00190 bool rewind(size_t count) 00191 { 00192 if (mPos < count) 00193 { 00194 clear(); 00195 return false; 00196 } 00197 else 00198 { 00199 mPos -= count; 00200 return true; 00201 } 00202 } 00204 bool ff(size_t count) 00205 { 00206 if (avail() < count) 00207 { 00208 clear(); 00209 return false; 00210 } 00211 else 00212 { 00213 mPos += count; 00214 return true; 00215 } 00216 } 00217 00219 size_t avail() const 00220 { 00221 return mValidBytes - mPos; 00222 } 00223 00225 void clear() 00226 { 00227 mValidBytes = 0; 00228 mPos = 0; 00229 } 00230 }; 00231 00235 /*template <size_t cacheSize> 00236 class NoStaticCache 00237 { 00238 public: 00239 NoStaticCache() { } 00240 00241 size_t cacheData(const void* buf, size_t count) { return 0; } 00242 size_t read(void* buf, size_t count) { return 0; } 00243 00244 bool rewind(size_t count) { return false; } 00245 bool ff(size_t count) { return false; } 00246 00247 size_t avail() const { return 0; } 00248 00249 void clear() { } 00250 };*/ 00251 00253 class _OgrePrivate ZipDataStream : public DataStream 00254 { 00255 protected: 00256 ZZIP_FILE* mZzipFile; 00258 StaticCache<2 * OGRE_STREAM_TEMP_SIZE> mCache; 00259 public: 00261 ZipDataStream(ZZIP_FILE* zzipFile, size_t uncompressedSize); 00263 ZipDataStream(const String& name, ZZIP_FILE* zzipFile, size_t uncompressedSize); 00264 ~ZipDataStream(); 00266 size_t read(void* buf, size_t count); 00268 size_t write(void* buf, size_t count); 00270 void skip(long count); 00272 void seek( size_t pos ); 00274 size_t tell(void) const; 00276 bool eof(void) const; 00278 void close(void); 00279 00280 00281 }; 00282 00286 } 00287 00288 #endif
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Last modified Sat Jan 14 2012 18:40:44