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119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
#ifndef __CLODHANDLER_H__
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#define __CLODHANDLER_H__
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#include "../global.h"
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#include <vector>
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#include <string>
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#include <fstream>
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#include <set>
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#include <map>
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#include <boost/unordered_set.hpp>
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/*
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* CLodhandler.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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namespace boost
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{class mutex;}
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namespace NLoadHandlerHelp
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{
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const int dmHelp=0, dmNoExtractingMask=1;
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//std::string P1,P2,CurDir;
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const int fCHUNK = 50000;
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}
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struct LodEntry {
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char filename[16];
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ui32 offset; /* little endian */
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ui32 uncompressedSize; /* little endian */
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ui32 unused; /* little endian */
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ui32 size; /* little endian */
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};
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DLL_EXPORT int readNormalNr (const unsigned char * bufor, int pos, int bytCon = 4, bool cyclic = false);
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DLL_EXPORT char readChar(const unsigned char * bufor, int &i);
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DLL_EXPORT std::string readString(const unsigned char * bufor, int &i);
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enum LodFileType{
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FILE_ANY,
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FILE_TEXT,
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FILE_ANIMATION,
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FILE_MASK,
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FILE_CAMPAIGN,
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FILE_MAP,
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FILE_FONT,
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FILE_GRAPHICS,
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FILE_OTHER
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};
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struct Entry
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{
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// Info extracted from LOD file
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std::string name,
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realName;//for external files - case\extension may not match
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int offset, //from beginning
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realSize, //size without compression
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size; //and with
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LodFileType type;// file type determined by extension
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bool operator == (const Entry & comp) const
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{
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return (type==comp.type || comp.type== FILE_ANY) && name==comp.name;
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}
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Entry(std::string con, LodFileType TYPE): name(con), type(TYPE){};
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Entry(std::string con): name(con){};
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Entry(){};
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};
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template<>
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struct boost::hash<Entry> : public std::unary_function<Entry, std::size_t> {
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private:
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boost::hash<std::string> stringHasher;
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public:
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std::size_t operator()(Entry const& en) const
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{
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//do NOT improve this hash function as we need same-name hash collisions for find to work properly
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return stringHasher(en.name);
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}
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};
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class DLL_EXPORT CLodHandler
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{
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std::map<std::string, LodFileType> extMap;// to convert extensions to file type
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std::ifstream LOD;
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unsigned int totalFiles;
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boost::mutex *mutex;
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std::string myDir; //load files from this dir instead of .lod file
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void initEntry(Entry &e, const std::string name);
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int infs2(unsigned char * in, int size, int realSize, unsigned char*& out, int wBits=15); //zlib fast handler
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public:
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boost::unordered_set<Entry> entries;
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CLodHandler();
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~CLodHandler();
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void init(const std::string lodFile, const std::string dirName);
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unsigned char * giveFile(const std::string defName, LodFileType type=FILE_ANY, int * length=NULL); //returns pointer to the decompressed data - it must be deleted when no longer needed!
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bool haveFile(const std::string name, LodFileType type=FILE_ANY);//check if file is present in lod
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std::string getTextFile(const std::string name, LodFileType type=FILE_TEXT); //extracts one file
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void extractFile(const std::string FName, const std::string name); //extracts a specific file
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static unsigned char * getUnpackedFile(const std::string & path, int * sizeOut); //loads given file, decompresses and returns
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};
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#endif // __CLODHANDLER_H__
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