#ifndef DBOX_MTOOL_H

#define DBOX_MTOOL_H

#include <string>
#include <stdio.h>
#include <general.h>

class messaget
 {
 public:
  const char *data;            // pointer to the begin of the message
  const char *endofmail;       // pointer to end of message
  const char *endoffile;       // pointer to end of file

  dword len, headerlen;        // length of the message body and of the header

  virtual void copyheaderid(char *dest, const char *id, size_t maxlen) const=0;
                               // copies a header id from a message to a string
   
  virtual void copyheaderid(std::string &dest, const char *id) const=0;
                               // copies a header id from a message to a string
   
  virtual void copyheadertext(char *dest, const char *text, size_t maxlen) const=0;
                               // copies the content of a header to a string

  virtual void copyheadertext(std::string &dest, const char *text) const=0;
                               // copies the content of a header to a string

  virtual bool parseline(const char **start,
                         const char **id,
                         const char **text) const=0;
  
  virtual bool parse()=0;      // parse a message
  
  virtual bool eof() const { return data==endoffile; }

  virtual bool findheader(const char **start, 
                          const char *id,
                          const char **text) const;
    // TRUE:  nothing found
    // FALSE: found a header

  virtual bool findsingleheader(char *dest, 
                                const char *id, size_t maxlen) const;
    // TRUE:  nothing found
    // FALSE: found a header

  virtual bool findsingleheader(std::string &dest, const char *id) const;
  virtual bool findsingleheader(std::string &dest, const std::string &id) const;
    // TRUE:  nothing found
    // FALSE: found a header

  virtual bool copybody(FILE *outfile) const;
    // copy the body to a file
  
  virtual bool copybody(std::ostream &out) const;
    // copy the body to a stream
  
  virtual bool copy(FILE *outfile) const;
    // copy the complete message to a file

  virtual bool copy(std::ostream &out) const;
    // copy the complete message to a stream

  virtual bool copyheader(FILE *outfile) const;
    // copy the header to a file
    
  virtual bool copyheader(std::ostream &out) const;
    // copy the header to a stream
 };

bool getline(messaget *m, char *line, size_t maxlen, const char **ptr);
bool getline(const messaget &m, std::string &line, const char *&ptr);

#endif