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90 lines
2.3 KiB
90 lines
2.3 KiB
/*
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Copyright (C) 2005-2006 NSRT Team ( http://nsrt.edgeemu.com )
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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version 2 as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef JMA_H
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#define JMA_H
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#include <string>
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#include <fstream>
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#include <vector>
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#include <time.h>
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namespace JMA
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{
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enum jma_errors { JMA_NO_CREATE, JMA_NO_MEM_ALLOC, JMA_NO_OPEN, JMA_BAD_FILE,
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JMA_UNSUPPORTED_VERSION, JMA_COMPRESS_FAILED, JMA_DECOMPRESS_FAILED,
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JMA_FILE_NOT_FOUND };
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struct jma_file_info_base
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{
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std::string name;
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std::string comment;
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size_t size;
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unsigned int crc32;
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};
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struct jma_public_file_info : jma_file_info_base
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{
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time_t datetime;
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};
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struct jma_file_info : jma_file_info_base
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{
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unsigned short date;
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unsigned short time;
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const unsigned char *buffer;
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};
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template<class jma_file_type>
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inline size_t get_total_size(std::vector<jma_file_type>& files)
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{
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size_t size = 0;
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for (typename std::vector<jma_file_type>::iterator i = files.begin(); i != files.end(); i++)
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{
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size += i->size; //We do have a problem if this wraps around
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}
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return(size);
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}
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class jma_open
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{
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public:
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jma_open(const char *);
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~jma_open();
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std::vector<jma_public_file_info> get_files_info();
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std::vector<unsigned char *> get_all_files(unsigned char *);
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void extract_file(std::string& name, unsigned char *);
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bool is_solid();
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private:
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std::ifstream stream;
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std::vector<jma_file_info> files;
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size_t chunk_size;
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unsigned char *decompressed_buffer;
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unsigned char *compressed_buffer;
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void chunk_seek(unsigned int);
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void retrieve_file_block();
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};
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time_t uint_to_time(unsigned short, unsigned short);
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const char *jma_error_text(jma_errors);
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}
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#endif
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