// ---------------------------------------------------------------------------
// - Mime.cpp                                                                -
// - afnix:nwg module - mime base class implementation                       -
// ---------------------------------------------------------------------------
// - This program is free software;  you can redistribute it  and/or  modify -
// - it provided that this copyright notice is kept intact.                  -
// -                                                                         -
// - This program  is  distributed in  the hope  that it will be useful, but -
// - without  any  warranty;  without  even   the   implied    warranty   of -
// - merchantability or fitness for a particular purpose.  In no event shall -
// - the copyright holder be liable for any  direct, indirect, incidental or -
// - special damages arising in any way out of the use of this software.     -
// ---------------------------------------------------------------------------
// - copyright (c) 1999-2006 amaury darsch                                   -
// ---------------------------------------------------------------------------

#include "Mime.hpp"
#include "Vector.hpp"
#include "Runnable.hpp"
#include "QuarkZone.hpp"
#include "Exception.hpp"

namespace afnix {

  // -------------------------------------------------------------------------
  // - private section                                                       -
  // -------------------------------------------------------------------------

  static const String NWG_MIME_DEF = "text/plain";

  // -------------------------------------------------------------------------
  // - class section                                                         -
  // -------------------------------------------------------------------------

  // create a default mime object

  Mime::Mime (void) {
    d_mime = NWG_MIME_DEF;
  }

  // create a mime object by type

  Mime::Mime (const String& type) {
    d_mime = type;
  }

  // return the document class name

  String Mime::repr (void) const {
    return "Mime";
  }

  // return the mime value

  String Mime::getmime (void) const {
    rdlock ();
    String result = d_mime;
    unlock ();
    return result;
  }
    
  // -------------------------------------------------------------------------
  // - object section                                                        -
  // -------------------------------------------------------------------------

  // the quark zone
  static const long QUARK_ZONE_LENGTH = 2;
  static QuarkZone  zone (QUARK_ZONE_LENGTH);

  // the object supported quarks
  static const long QUARK_WRITE   = zone.intern ("write");
  static const long QUARK_GETMIME = zone.intern ("get-mime");

  // return true if the given quark is defined

  bool Mime::isquark (const long quark, const bool hflg) const {
    rdlock ();
    if (zone.exists (quark) == true) {
      unlock ();
      return true;
    }
    bool result = hflg ? Object::isquark (quark, hflg) : false;
    unlock ();
    return result;
  }

  // apply this object with a set of arguments and a quark
  
  Object* Mime::apply (Runnable* robj, Nameset* nset, const long quark,
		       Vector* argv) {
    // get the number of arguments
    long argc = (argv == nilp) ? 0 : argv->length ();

    // check for 0 argument
    if (argc == 0) {
      if (quark == QUARK_GETMIME) return new String (getmime ());
      if (quark == QUARK_WRITE) {
	Output* os = (robj == nilp) ? nilp : robj->getos ();
	if (os == nilp) return nilp;
	write (*os);
	return nilp;
      }
    }
    // check for 1 argument
    if (argc == 1) {
      if (quark == QUARK_WRITE) {
	Object* obj = argv->get (0);
	// check for an output stream
	Output* os = dynamic_cast <Output*> (obj);
	if (os != nilp) {
	  write (*os);
	  return nilp;
	}
	// check for a buffer
	Buffer* buf = dynamic_cast <Buffer*> (obj);
	if (buf != nilp) {
	  write (*buf);
	  return nilp;
	}
	throw Exception ("type-error", "invalid object with write",
			 Object::repr (obj));
      }
    }
    // call the object method
    return Object::apply (robj, nset, quark, argv);
  }
}
