/src/IO_ZipArchiver/ZipExplorer.h

 1#ifndef _ZIP_FILE_BROWSER_H_
 2#define _ZIP_FILE_BROWSER_H_
 3
 4#include "ZipStructures.h"
 5#include <Core_EndianAbstractor.h>
 6#include <fstream>
 7
 8#ifdef _MSC_VER 
 9#if _MSC_VER < 1600
10#include <Core_pstdint.h>
11#endif //_MSC_VER < 1600
12#endif // _MSC_VER 
13
14class ZipExplorer
15{
16	std::fstream stream;
17	EndianAbstractor endian_abstractor;
18	unsigned int central_directory_location;
19	
20	ZipCentralDirectoryStructure current_file;
21	int nextfile_pos; //negative if uninitialized;
22	unsigned int current_file_index;
23
24	bool FindCentralDirectory();
25	bool FindCentralDirectory64();
26
27
28	//Data from EndOfCentralDirectory
29#ifdef INT64_MAX
30	uint64_t total_entries_in_CD;
31	uint64_t offset_start_CD_wrt_start_disk_number;
32#else
33	uint32_t total_entries_in_CD;
34	uint32_t offset_start_CD_wrt_start_disk_number;
35#endif
36	
37public:
38	ZipExplorer()
39		:
40	endian_abstractor(true)
41	{
42	}
43
44	unsigned int GetCurrentFileIndex();
45	unsigned int GetFileCount();
46
47	bool SeekToFirstFile();
48	bool NextFile();
49
50	unsigned int CurrentReadFilenameOnly(char * dest, unsigned int buffer_size);
51	unsigned int CurrentReadDataParamsOnly(unsigned int & out_compressed_size, unsigned int & out_uncompressed_size, unsigned int & out_compression);
52
53	bool HasReadCurrentHeader();
54	void ReadCurrentFileHeader(char * filename = 0, unsigned int filename_buffer_size = 0, 
55						void * extra_field = 0, unsigned int extra_buffer_size = 0, 
56						char * file_comment = 0, unsigned int comment_buffer_size = 0);
57
58	unsigned int GetFileDataOffset();
59
60	unsigned int CurrentReadData(void * dest, unsigned int buffer_size, unsigned int data_offset, unsigned int uncompressed_length);
61	
62	void Open(const char * filename);
63	void Close();
64
65	bool FindFile(const char * filename, bool case_sensitive);
66};
67
68#endif