#ifndef _MIMEHANDLER_H_INCLUDED_
#define _MIMEHANDLER_H_INCLUDED_
/* @(#$Id: mimehandler.h,v 1.6 2005-03-25 09:40:27 dockes Exp $ (C) 2004 J.F.Dockes */
#include <string>
#include <list>
#include "rclconfig.h"
#include "rcldb.h"
/**
* Document interner class.
*/
class MimeHandler {
public:
virtual ~MimeHandler() {}
/**
* Transform external data into internal utf8 document
*
* @param conf the global configuration
* @param filename File from which the data comes from
* @param mimetype its mime type (from the mimemap configuration file)
* @param outdoc The output document
* @param ipath the access path for the document inside the file.
* For mono-document file types, this will always be empty.
* It is used, for example for mbox files which may contain
* multiple emails. If this is not empty in input, then the
* caller is requesting a single document (ie: for display).
* If this is empty (during indexation), it will be filled-up
* by the function, and all the file's documents will be
* returned by successive calls.
* @return the return value indicates if there are more documents to be
* fetched from the same file.
*/
enum Status {MHError, MHDone, MHAgain};
virtual Status worker(RclConfig * conf, const std::string &filename,
const std::string &mimetype, Rcl::Doc& outdoc,
string& ipath) = 0;
};
/**
* Return indexing handler class for given mime type
* returned pointer should be deleted by caller
*/
extern MimeHandler *getMimeHandler(const std::string &mtyp, ConfTree *mhdlers);
/**
* Return external viewer exec string for given mime type
*/
extern std::string getMimeViewer(const std::string &mtyp, ConfTree *mhandlers);
/**
* Return command to uncompress the given type. The returned command has
* substitutable places for input file name and temp dir name, and will
* return output name
*/
bool getUncompressor(const std::string &mtype, ConfTree *mhandlers,
std::list<std::string>& cmd);
#endif /* _MIMEHANDLER_H_INCLUDED_ */