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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-stream.c : abstract class for a stream */


/* 
 *
 * Copyright (C) 1999 Bertrand Guiheneuf <Bertrand.Guiheneuf@inria.fr> .
 *
 * 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 "camel-stream.h"

static CamelStreamClass *parent_class=NULL;


/* Returns the class for a CamelMimeMessage */
#define CS_CLASS(so) CAMEL_STREAM_CLASS (GTK_OBJECT(so)->klass)

static gint _read (CamelStream *stream, gchar *buffer, gint n);
static gint _write (CamelStream *stream, gchar *buffer, gint n);
static void _flush (CamelStream *stream);
static gint _available (CamelStream *stream);
static gboolean _eos (CamelStream *stream);
static void _close (CamelStream *stream);


static void
camel_stream_class_init (CamelStreamClass *camel_stream_class)
{

    parent_class = gtk_type_class (gtk_object_get_type ());

    /* virtual method definition */
    camel_stream_class->read = _read;
    camel_stream_class->write = _write;
    camel_stream_class->flush = _flush;
    camel_stream_class->available = _available;
    camel_stream_class->eos = _eos;
    camel_stream_class->close = _close;

    /* virtual method overload */

}



GtkType
camel_stream_get_type (void)
{
    static GtkType camel_stream_type = 0;
    
    if (!camel_stream_type) {
        GtkTypeInfo camel_stream_info = 
        {
            "CamelStream",
            sizeof (CamelStream),
            sizeof (CamelStreamClass),
            (GtkClassInitFunc) camel_stream_class_init,
            (GtkObjectInitFunc) NULL,
                /* reserved_1 */ NULL,
                /* reserved_2 */ NULL,
            (GtkClassInitFunc) NULL,
        };
        
        camel_stream_type = gtk_type_unique (gtk_object_get_type (), &camel_stream_info);
    }
    
    return camel_stream_type;
}



/**
 * _read: read bytes from a stream
 * @stream: stream
 * @buffer: buffer where bytes are stored
 * @n: max number of bytes to read
 * 
 * 
 * 
 * Return value: number of bytes actually read.
 **/
static gint
_read (CamelStream *stream, gchar *buffer, gint n)
{
    
}

gint 
camel_stream_read (CamelStream *stream, gchar *buffer, gint n)
{
    CS_CLASS (stream)->read (stream, buffer, n);
}

/**
 * _write: read bytes to a stream
 * @stream: the stream
 * @buffer: byte buffer
 * @n: number of bytes to write
 * 
 * 
 * 
 * Return value: the number of bytes actually written
 *  in the stream.
 **/
static gint
_write (CamelStream *stream, gchar *buffer, gint n)
{

}

gint
camel_stream_write (CamelStream *stream, gchar *buffer, gint n)
{
    CS_CLASS (stream)->write (stream, buffer, n);
}



/**
 * _flush: flush pending changes 
 * @stream: the stream
 * 
 * 
 **/
static void
_flush (CamelStream *stream)
{

}



/**
 * _available: return the number of bytes available for reading
 * @stream: the stream
 * 
 * Return the number of bytes available without blocking.
 * 
 * Return value: the number of bytes available
 **/
static gint 
_available (CamelStream *stream)
{

}


/**
 * _eos: test if there are bytes left to read
 * @stream: the stream
 * 
 * 
 * 
 * Return value: true if all stream has been read
 **/
static gboolean
_eos (CamelStream *stream)
{

}


/**
 * _close: close a stream
 * @stream: the stream
 * 
 * 
 **/
static void
_close (CamelStream *stream)
{

}

void
camel_stream_close (CamelStream *stream)
{
    CS_CLASS (stream)->close (stream);
}





/***************** Utility functions ********************/

void
camel_stream_write_strings (CamelStream *stream, ... )
{
    va_list args;
    char *string;
    
    va_start(args, stream);
    string = va_arg (args, char *);
    
    while (string) {
        camel_stream_write_string(stream, string);
        string = va_arg (args, char *);
    }
    va_end (args);
}