harbour-core/contrib/hbtip/encoder.prg

/*
 * TIP Class oriented Internet protocol library
 *
 * Copyright 2003 Giancarlo Niccolai <gian@niccolai.ws>
 * Copyright 2007 Hannes Ziegler <hz AT knowlexbase.com> (tip_GetEncoder())
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.txt.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA (or visit the web site https://www.gnu.org/).
 *
 * As a special exception, the Harbour Project gives permission for
 * additional uses of the text contained in its release of Harbour.
 *
 * The exception is that, if you link the Harbour libraries with other
 * files to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the Harbour library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the Harbour
 * Project under the name Harbour.  If you copy code from other
 * Harbour Project or Free Software Foundation releases into a copy of
 * Harbour, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for Harbour, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.
 *
 */

/* Internet Messaging: https://www.ietf.org/rfc/rfc2045.txt */

#include "hbclass.ch"

#include "fileio.ch"

CREATE CLASS TIPEncoder

   VAR cName

   METHOD New( cMode )
   METHOD Encode( cData )
   METHOD Decode( cData )

ENDCLASS

#define MODE_PASSTHROUGH  "as-is"

METHOD New( cMode ) CLASS TIPEncoder

   ::cName := Lower( hb_defaultValue( cMode, MODE_PASSTHROUGH ) )

   RETURN Self

METHOD Encode( cData ) CLASS TIPEncoder
   RETURN iif( ::cName == MODE_PASSTHROUGH, cData, tip_GetEncoder( ::cName ):Encode( cData ) )

METHOD Decode( cData ) CLASS TIPEncoder
   RETURN iif( ::cName == MODE_PASSTHROUGH, cData, tip_GetEncoder( ::cName ):Decode( cData ) )

FUNCTION tip_GetEncoder( cMode )

   SWITCH Lower( hb_defaultValue( cMode, MODE_PASSTHROUGH ) )
   CASE "base64"           ; RETURN TIPEncoderBase64():New()
   CASE "quoted-printable" ; RETURN TIPEncoderQP():New()
   CASE "url"
   CASE "urlencoded"       ; RETURN TIPEncoderUrl():New()
   ENDSWITCH

   RETURN TIPEncoder():New()