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#ifndef _FGCONI_H
#define _FGCONI_H
// fgconi.h
//
// FTPGrabConnectionInterface
//
// Interface class detailing requirements of each FTPGrab protocol
// we might be fetching from e.g. FTP, HTTP etc.
class FGString;
class FGDirListing;
class FGConnectionInterface {
public:
// Need virtual destructor - we delete by the base class
virtual ~FGConnectionInterface();
// Connect method
// INPUTS: Hostname of host to connect to
// RETURNS: Nothing
// THROWS: Various connect failed exceptions
virtual void Connect(const FGString& host) = 0;
// Change directory method
// INPUTS: Directory name
// RETURNS: Nothing
// THROWS: Directory not found exception
virtual void ChangeDir(const FGString& dir) = 0;
// Get directory listing method
// INPUTS: None
// RETURNS: Vector of directory entries
virtual FGDirListing GetDirListing(void) = 0;
// Retrieve file method
// INPUTS: Filename
// RETURNS: fd to source of data
// THROWS: File not found, etc.
virtual int GetFile(const FGString& file) = 0;
// Post retrive file method
// Some protocols need to perform cleanup/verification after
// a transfer
virtual void PostFileTransfer(void) = 0;
// Disconnect
virtual void Disconnect(void) = 0;
};
#endif // _FGCONI_H
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