text: 
  // GZipFile.h
  
  // Declares the cGZipFile class representing a RAII wrapper over zlib's GZip file routines
  
  
  
  
  
  #pragma once
  
  #include "zlib/zlib.h"
  
  
  
  
  
  class cGZipFile
  {
  public:
  	enum eMode
  	{
  		fmRead,      // Read-only. If the file doesn't exist, object will not be valid
  		fmWrite,     // Write-only. If the file already exists, it will be overwritten
  	} ;
  	
  	cGZipFile(void);
  	~cGZipFile();
  	
  	/** Opens the file. Returns true if successful. Fails if a file has already been opened through this object. */
  	bool Open(const AString & a_FileName, eMode a_Mode);
  	
  	/** Closes the file, flushing all buffers. This object may be then reused for a different file and / or mode */
  	void Close(void);
  	
  	/** Reads the rest of the file and decompresses it into a_Contents. Returns the number of decompressed bytes, <0 for error */
  	int ReadRestOfFile(AString & a_Contents);
  	
  	/** Writes a_Contents into file, compressing it along the way. Returns true if successful. Multiple writes are supported. */
  	bool Write(const AString & a_Contents) { return Write(a_Contents.data(), static_cast<int>(a_Contents.size())); }
  	
  	bool Write(const char * a_Data, int a_Size);
  	
  protected:
  	gzFile m_File;
  	eMode  m_Mode;
  } ;
  
  
  
  
  
  