/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* camelDataWrapper.c : Abstract class for a data_wrapper */ /** THIS IS MOSTLY AN ABSTRACT CLASS THAT SHOULD HAVE BEEN AN INTERFACE. **/ /* * * Author : * Bertrand Guiheneuf * * Copyright 1999, 2000 HelixCode (http://www.helixcode.com) . * * 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 of the * License, 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 program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA */ #include #include "camel-data-wrapper.h" #include "camel-log.h" static GtkObjectClass *parent_class=NULL; /* Returns the class for a CamelDataWrapper */ #define CDW_CLASS(so) CAMEL_DATA_WRAPPER_CLASS (GTK_OBJECT(so)->klass) static void _construct_from_stream (CamelDataWrapper *data_wrapper, CamelStream *stream); static void _write_to_stream (CamelDataWrapper *data_wrapper, CamelStream *stream); static void _set_mime_type (CamelDataWrapper *data_wrapper, gchar *mime_type); static gchar *_get_mime_type (CamelDataWrapper *data_wrapper); static GMimeContentField *_get_mime_type_field (CamelDataWrapper *data_wrapper); static void _set_mime_type_field (CamelDataWrapper *data_wrapper, GMimeContentField *mime_type); static CamelStream *_get_stream (CamelDataWrapper *data_wrapper); static void _finalize (GtkObject *object); static void camel_data_wrapper_class_init (CamelDataWrapperClass *camel_data_wrapper_class) { GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (camel_data_wrapper_class); parent_class = gtk_type_class (gtk_object_get_type ()); /* virtual method definition */ camel_data_wrapper_class->write_to_stream = _write_to_stream; camel_data_wrapper_class->construct_from_stream = _construct_from_stream; camel_data_wrapper_class->set_mime_type = _set_mime_type; camel_data_wrapper_class->get_mime_type = _get_mime_type; camel_data_wrapper_class->get_mime_type_field = _get_mime_type_field; camel_data_wrapper_class->set_mime_type_field = _set_mime_type_field; camel_data_wrapper_class->get_stream = _get_stream; /* virtual method overload */ gtk_object_class->finalize = _finalize; } static void camel_data_wrapper_init (gpointer object, gpointer klass) { CamelDataWrapper *camel_data_wrapper = CAMEL_DATA_WRAPPER (object); CAMEL_LOG_FULL_DEBUG ( "camel_data_wrapper_init:: Entering\n"); camel_data_wrapper->mime_type = gmime_content_field_new (NULL, NULL); CAMEL_LOG_FULL_DEBUG ( "camel_data_wrapper_init:: Leaving\n"); } GtkType camel_data_wrapper_get_type (void) { static GtkType camel_data_wrapper_type = 0; if (!camel_data_wrapper_type) { GtkTypeInfo camel_data_wrapper_info = { "CamelDataWrapper", sizeof (CamelDataWrapper), sizeof (CamelDataWrapperClass), (GtkClassInitFunc) camel_data_wrapper_class_init, (GtkObjectInitFunc) camel_data_wrapper_init, /* reserved_1 */ NULL, /* reserved_2 */ NULL, (GtkClassInitFunc) NULL, }; camel_data_wrapper_type = gtk_type_unique (gtk_object_get_type (), &camel_data_wrapper_info); } return camel_data_wrapper_type; } static void _finalize (GtkObject *object) { CamelDataWrapper *camel_data_wrapper = CAMEL_DATA_WRAPPER (object); CAMEL_LOG_FULL_DEBUG ("Entering CamelDataWrapper::finalize\n"); CAMEL_LOG_FULL_DEBUG ("CamelDataWrapper::finalize, finalizing object %p\n", object); if (camel_data_wrapper->mime_type) gmime_content_field_unref (camel_data_wrapper->mime_type); parent_class->finalize (object); CAMEL_LOG_FULL_DEBUG ("Leaving CamelDataWrapper::finalize\n"); } /** * _write_to_stream: write data content in a byte stream * @data_wrapper: the data wrapper object * @stream byte stream where data will be written * * This method must be overriden by subclasses * Data must be written in the bytes stream * in a architecture independant fashion. * If data is a standard data (for example an jpg image) * it must be serialized in the strea exactly as it * would be saved on disk. A simple dump of the stream in * a file should be sufficient for the data to be * re-read by a foreign application. * **/ static void _write_to_stream (CamelDataWrapper *data_wrapper, CamelStream *stream) { /* nothing */ } /** * camel_data_wrapper_write_to_stream: write data in a stream * @data_wrapper: the data wrapper object * @stream: byte stream where data will be written * * Write data content in a stream. Data is stored in a machine * independant format. * **/ void camel_data_wrapper_write_to_stream (CamelDataWrapper *data_wrapper, CamelStream *stream) { CAMEL_LOG_FULL_DEBUG ( "camel_data_wrapper_write_to_stream:: Entering\n"); CDW_CLASS(data_wrapper)->write_to_stream (data_wrapper, stream); CAMEL_LOG_FULL_DEBUG ( "camel_data_wrapper_write_to_stream:: Leaving\n"); } static void _construct_from_stream (CamelDataWrapper *data_wrapper, CamelStream *stream) { /* nothing */ } void camel_data_wrapper_construct_from_stream (CamelDataWrapper *data_wrapper, CamelStream *stream) { CAMEL_LOG_FULL_DEBUG ( "camel_data_wrapper_construct_from_stream:: Entering\n"); CDW_CLASS(data_wrapper)->construct_from_stream (data_wrapper, stream); CAMEL_LOG_FULL_DEBUG ( "camel_data_wrapper_construct_from_stream:: Leaving\n"); } static void _set_mime_type (CamelDataWrapper *data_wrapper, gchar *mime_type) { CAMEL_LOG_FULL_DEBUG ( "CamelDataWrapper::set_mime_type Entering\n"); g_assert (mime_type); gmime_content_field_construct_from_string (data_wrapper->mime_type, mime_type); CAMEL_LOG_FULL_DEBUG ( "CamelDataWrapper::set_mime_type Leaving\n"); } void camel_data_wrapper_set_mime_type (CamelDataWrapper *data_wrapper, gchar *mime_type) { CDW_CLASS(data_wrapper)->set_mime_type (data_wrapper, mime_type); } static gchar * _get_mime_type (CamelDataWrapper *data_wrapper) { gchar *mime_type; mime_type = gmime_content_field_get_mime_type (data_wrapper->mime_type); return mime_type; } gchar * camel_data_wrapper_get_mime_type (CamelDataWrapper *data_wrapper) { CAMEL_LOG_FULL_DEBUG ( "camel_data_wrapper_get_mime_type:: Entering before returning\n"); return CDW_CLASS(data_wrapper)->get_mime_type (data_wrapper); } static GMimeContentField * _get_mime_type_field (CamelDataWrapper *data_wrapper) { return data_wrapper->mime_type; } GMimeContentField * camel_data_wrapper_get_mime_type_field (CamelDataWrapper *data_wrapper) { return CDW_CLASS(data_wrapper)->get_mime_type_field (data_wrapper); } static void _set_mime_type_field (CamelDataWrapper *data_wrapper, GMimeContentField *mime_type) { if (data_wrapper->mime_type) gmime_content_field_free (data_wrapper->mime_type); data_wrapper->mime_type = mime_type; } void camel_data_wrapper_set_mime_type_field (CamelDataWrapper *data_wrapper, GMimeContentField *mime_type) { CDW_CLASS(data_wrapper)->set_mime_type_field (data_wrapper, mime_type); } static CamelStream * _get_stream (CamelDataWrapper *data_wrapper) { /* This needs to be implemented in subclasses. */ return NULL; } CamelStream * camel_data_wrapper_get_stream (CamelDataWrapper *data_wrapper) { CDW_CLASS(data_wrapper)->get_stream (data_wrapper); }