/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camelMimePart.c : Abstract class for a mime_part */


/* 
 *
 * Author : 
 *  Bertrand Guiheneuf <bertrand@helixcode.com>
 *
 * 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 <config.h>
#include <string.h>
#include "camel-mime-part.h"
#include <stdio.h>
#include "gmime-content-field.h"
#include "string-utils.h"
#include "camel-log.h"
#include "gmime-utils.h"
#include "camel-simple-data-wrapper.h"
#include "hash-table-utils.h"
#include "camel-stream-mem.h"
#include "camel-mime-part-utils.h"
#include "gmime-base64.h"
#include "camel-seekable-substream.h"
#include "camel-stream-b64.h"


typedef enum {
	HEADER_UNKNOWN,
	HEADER_DESCRIPTION,
	HEADER_DISPOSITION,
	HEADER_CONTENT_ID,
	HEADER_ENCODING,
	HEADER_CONTENT_MD5,
	HEADER_CONTENT_LANGUAGES,
	HEADER_CONTENT_TYPE
} CamelHeaderType;


static GHashTable *header_name_table;


static CamelMediumClass *parent_class=NULL;

/* Returns the class for a CamelMimePart */
#define CMP_CLASS(so) CAMEL_MIME_PART_CLASS (GTK_OBJECT(so)->klass)
#define CDW_CLASS(so) CAMEL_DATA_WRAPPER_CLASS (GTK_OBJECT(so)->klass)

/* from GtkObject */
static void            _finalize (GtkObject *object);

/* from CamelDataWrapper */
static void            _write_to_stream              (CamelDataWrapper *data_wrapper, 
						      CamelStream *stream);
static void            _construct_from_stream        (CamelDataWrapper *data_wrapper, 
						      CamelStream *stream);
static void            _set_input_stream             (CamelDataWrapper *data_wrapper, 
						      CamelStream *stream);
static CamelStream * _get_output_stream        (CamelDataWrapper *data_wrapper);


/* from CamelMedia */ 
static void            _add_header                   (CamelMedium *medium, 
						      gchar *header_name, 
						      gchar *header_value);

static void            _set_content_object           (CamelMedium *medium, 
						      CamelDataWrapper *content);
static CamelDataWrapper *_get_content_object         (CamelMedium *medium);



/* from CamelMimePart */
static void            _set_description              (CamelMimePart *mime_part, 
						      const gchar *description);
static const gchar *   _get_description              (CamelMimePart *mime_part);
static void            _set_disposition              (CamelMimePart *mime_part, 
						      const gchar *disposition);
static const gchar *   _get_disposition              (CamelMimePart *mime_part);
static void            _set_filename                 (CamelMimePart *mime_part, 
						      gchar *filename);
static const gchar *   _get_filename                 (CamelMimePart *mime_part);
static void            _set_content_id               (CamelMimePart *mime_part, 
						      gchar *content_id);
static const gchar *   _get_content_id               (CamelMimePart *mime_part);
static void            _set_content_MD5              (CamelMimePart *mime_part, 
						      gchar *content_MD5);
static const gchar *   _get_content_MD5              (CamelMimePart *mime_part);
static void            _set_encoding                 (CamelMimePart *mime_part, 
						      CamelMimePartEncodingType encoding);
static CamelMimePartEncodingType _get_encoding       (CamelMimePart *mime_part);
static void            _set_content_languages        (CamelMimePart *mime_part, 
						      GList *content_languages);
static const GList *   _get_content_languages        (CamelMimePart *mime_part);
static void            _set_header_lines             (CamelMimePart *mime_part, 
						      GList *header_lines);
static const GList *   _get_header_lines             (CamelMimePart *mime_part);
static void            _set_content_type             (CamelMimePart *mime_part, 
						      const gchar *content_type);
static GMimeContentField  *_get_content_type         (CamelMimePart *mime_part);

static gboolean        _parse_header_pair            (CamelMimePart *mime_part, 
						      gchar *header_name, 
						      gchar *header_value);



/* loads in a hash table the set of header names we */
/* recognize and associate them with a unique enum  */
/* identifier (see CamelHeaderType above)           */
static void
_init_header_name_table()
{
	header_name_table = g_hash_table_new (g_strcase_hash, g_strcase_equal);
	g_hash_table_insert (header_name_table, "Content-Description", (gpointer)HEADER_DESCRIPTION);
	g_hash_table_insert (header_name_table, "Content-Disposition", (gpointer)HEADER_DISPOSITION);
	g_hash_table_insert (header_name_table, "Content-id", (gpointer)HEADER_CONTENT_ID);
	g_hash_table_insert (header_name_table, "Content-Transfer-Encoding", (gpointer)HEADER_ENCODING);
	g_hash_table_insert (header_name_table, "Content-MD5", (gpointer)HEADER_CONTENT_MD5);
	g_hash_table_insert (header_name_table, "Content-Type", (gpointer)HEADER_CONTENT_TYPE);
	
}

static void
camel_mime_part_class_init (CamelMimePartClass *camel_mime_part_class)
{
	CamelMediumClass *camel_medium_class = CAMEL_MEDIUM_CLASS (camel_mime_part_class);
	CamelDataWrapperClass *camel_data_wrapper_class = CAMEL_DATA_WRAPPER_CLASS (camel_mime_part_class);
	GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (camel_data_wrapper_class);

	parent_class = gtk_type_class (camel_medium_get_type ());
	_init_header_name_table();
	
	/* virtual method definition */
	camel_mime_part_class->set_description        = _set_description;
	camel_mime_part_class->get_description        = _get_description;
	camel_mime_part_class->set_disposition        = _set_disposition;
	camel_mime_part_class->get_disposition        = _get_disposition;
	camel_mime_part_class->set_filename           = _set_filename;
	camel_mime_part_class->get_filename           = _get_filename;
	camel_mime_part_class->set_content_id         = _set_content_id;
	camel_mime_part_class->get_content_id         = _get_content_id;
	camel_mime_part_class->set_content_MD5        = _set_content_MD5;
	camel_mime_part_class->get_content_MD5        = _get_content_MD5;
	camel_mime_part_class->set_encoding           = _set_encoding;
	camel_mime_part_class->get_encoding           = _get_encoding;
	camel_mime_part_class->set_content_languages  = _set_content_languages;
	camel_mime_part_class->get_content_languages  = _get_content_languages;
	camel_mime_part_class->set_header_lines       = _set_header_lines;
	camel_mime_part_class->get_header_lines       = _get_header_lines;
	camel_mime_part_class->set_content_type       = _set_content_type;
	camel_mime_part_class->get_content_type       = _get_content_type;
	
	camel_mime_part_class->parse_header_pair      = _parse_header_pair;

	/* virtual method overload */	
	camel_medium_class->add_header                = _add_header;
	camel_medium_class->set_content_object        = _set_content_object;
	camel_medium_class->get_content_object        = _get_content_object;

	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_input_stream    = _set_input_stream;
	camel_data_wrapper_class->get_output_stream    = _get_output_stream;

	gtk_object_class->finalize                    = _finalize;
}

static void
camel_mime_part_init (gpointer   object,  gpointer   klass)
{
	CamelMimePart *camel_mime_part = CAMEL_MIME_PART (object);
	
	camel_mime_part->content_type        = gmime_content_field_new (NULL, NULL);
	camel_mime_part->description         = NULL;
	camel_mime_part->disposition         = NULL;
	camel_mime_part->content_id          = NULL;
	camel_mime_part->content_MD5         = NULL;
	camel_mime_part->content_languages   = NULL;
	camel_mime_part->encoding            = CAMEL_MIME_PART_ENCODING_DEFAULT;
	camel_mime_part->filename            = NULL;
	camel_mime_part->header_lines        = NULL;

	camel_mime_part->temp_message_buffer = NULL;

}




GtkType
camel_mime_part_get_type (void)
{
	static GtkType camel_mime_part_type = 0;
	
	if (!camel_mime_part_type)	{
		GtkTypeInfo camel_mime_part_info =	
		{
			"CamelMimePart",
			sizeof (CamelMimePart),
			sizeof (CamelMimePartClass),
			(GtkClassInitFunc) camel_mime_part_class_init,
			(GtkObjectInitFunc) camel_mime_part_init,
				/* reserved_1 */ NULL,
				/* reserved_2 */ NULL,
			(GtkClassInitFunc) NULL,
		};
		
		camel_mime_part_type = gtk_type_unique (camel_medium_get_type (), &camel_mime_part_info);
	}
	
	return camel_mime_part_type;
}


static void           
_finalize (GtkObject *object)
{
	CamelMimePart *mime_part = CAMEL_MIME_PART (object);

#warning do something for (mime_part->disposition) which should not be a GMimeContentField

	CAMEL_LOG_FULL_DEBUG ("Entering CamelMimePart::finalize\n");

	g_free (mime_part->description);
	gmime_content_field_unref (mime_part->disposition);
	g_free (mime_part->content_id);
	g_free (mime_part->content_MD5);
	string_list_free (mime_part->content_languages);
	g_free (mime_part->filename);
	if (mime_part->header_lines) string_list_free (mime_part->header_lines);
	
	if (mime_part->content_type) gmime_content_field_unref (mime_part->content_type);
	if (mime_part->temp_message_buffer) g_byte_array_free (mime_part->temp_message_buffer, TRUE);

	GTK_OBJECT_CLASS (parent_class)->finalize (object);
	CAMEL_LOG_FULL_DEBUG ("Leaving CamelMimePart::finalize\n");
}


/* **** */

static void
_add_header (CamelMedium *medium, gchar *header_name, gchar *header_value)
{
	CamelMimePart *mime_part = CAMEL_MIME_PART (medium);
	
	/* Try to parse the header pair. If it corresponds to something   */
	/* known, the job is done in the parsing routine. If not,         */
	/* we simply add the header in a raw fashion                      */
	if (! CMP_CLASS(mime_part)->parse_header_pair (mime_part, header_name, header_value) ) 		
		parent_class->add_header (medium, header_name, header_value);
}






static void
_set_description (CamelMimePart *mime_part, const gchar *description)
{
	g_free (mime_part->description);
	mime_part->description = g_strdup (description);
}

void
camel_mime_part_set_description (CamelMimePart *mime_part, const gchar *description)
{
	CMP_CLASS(mime_part)->set_description (mime_part, description);
}



/* **** */



static const gchar *
_get_description (CamelMimePart *mime_part)
{
	return mime_part->description;
}

const gchar *
camel_mime_part_get_description (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_description (mime_part);
}



/* **** */


static void
_set_disposition (CamelMimePart *mime_part, const gchar *disposition)
{
#warning Do not use MimeContentfield here !!!
	
	if (mime_part->disposition) g_free ((mime_part->disposition)->type);
	g_free (mime_part->disposition);
	
	mime_part->disposition = g_new0 (GMimeContentField,1);
	(mime_part->disposition)->type = g_strdup (disposition);
}


void
camel_mime_part_set_disposition (CamelMimePart *mime_part, const gchar *disposition)
{
	CMP_CLASS(mime_part)->set_disposition (mime_part, disposition);
}


/* **** */



static const gchar *
_get_disposition (CamelMimePart *mime_part)
{
	if (!mime_part->disposition) return NULL;
	return (mime_part->disposition)->type;
}


const gchar *
camel_mime_part_get_disposition (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_disposition (mime_part);
}



static void
_set_filename (CamelMimePart *mime_part, gchar *filename)
{
	g_free(mime_part->filename);
	mime_part->filename = filename;
}


void
camel_mime_part_set_filename (CamelMimePart *mime_part, gchar *filename)
{
	CMP_CLASS(mime_part)->set_filename (mime_part, filename);
}



/* **** */


static const gchar *
_get_filename (CamelMimePart *mime_part)
{
	return mime_part->filename;
}


const gchar *
camel_mime_part_get_filename (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_filename (mime_part);
}


/* **** */


/* this routine must not be public */
static void
_set_content_id (CamelMimePart *mime_part, gchar *content_id)
{
	g_free(mime_part->content_id);
	mime_part->content_id = content_id;
}


static const gchar *
_get_content_id (CamelMimePart *mime_part)
{
	return mime_part->content_id;
}


/* **** */


const gchar *
camel_mime_part_get_content_id (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_content_id (mime_part);
}


/* this routine must not be public */
static void
_set_content_MD5 (CamelMimePart *mime_part, gchar *content_MD5)
{
	g_free(mime_part->content_MD5);
	mime_part->content_MD5 = content_MD5;
}


/* **** */


static const gchar *
_get_content_MD5 (CamelMimePart *mime_part)
{
	return mime_part->content_MD5;
}

const gchar *
camel_mime_part_get_content_MD5 (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_content_MD5 (mime_part);
}


/* **** */



static void
_set_encoding (CamelMimePart *mime_part, CamelMimePartEncodingType encoding)
{
	mime_part->encoding = encoding;
}

void
camel_mime_part_set_encoding (CamelMimePart *mime_part,
			      CamelMimePartEncodingType encoding)
{
	CMP_CLASS(mime_part)->set_encoding (mime_part, encoding);
}


/* **** */



static CamelMimePartEncodingType
_get_encoding (CamelMimePart *mime_part)
{
	return mime_part->encoding;
}

const CamelMimePartEncodingType
camel_mime_part_get_encoding (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_encoding (mime_part);
}



/* **** */



static void
_set_content_languages (CamelMimePart *mime_part, GList *content_languages)
{
	if (mime_part->content_languages) string_list_free (mime_part->content_languages);
	mime_part->content_languages = content_languages;
}

void
camel_mime_part_set_content_languages (CamelMimePart *mime_part, GList *content_languages)
{
	CMP_CLASS(mime_part)->set_content_languages (mime_part, content_languages);
}


/* **** */



static const GList *
_get_content_languages (CamelMimePart *mime_part)
{
	return mime_part->content_languages;
}


const GList *
camel_mime_part_get_content_languages (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_content_languages (mime_part);
}


/* **** */



static void
_set_header_lines (CamelMimePart *mime_part, GList *header_lines)
{
	if (mime_part->header_lines) string_list_free (mime_part->header_lines);
	mime_part->header_lines = header_lines;
}

void
camel_mime_part_set_header_lines (CamelMimePart *mime_part, GList *header_lines)
{
	CMP_CLASS(mime_part)->set_header_lines (mime_part, header_lines);
}


/* **** */



static const GList *
_get_header_lines (CamelMimePart *mime_part)
{
	return mime_part->header_lines;
}



const GList *
camel_mime_part_get_header_lines (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_header_lines (mime_part);
}


/* **** */



static void
_set_content_type (CamelMimePart *mime_part, const gchar *content_type)
{
	g_assert (content_type);
	gmime_content_field_construct_from_string (mime_part->content_type, content_type);
}

void 
camel_mime_part_set_content_type (CamelMimePart *mime_part, gchar *content_type)
{
	CMP_CLASS(mime_part)->set_content_type (mime_part, content_type);
}

/* **** */


static GMimeContentField *
_get_content_type (CamelMimePart *mime_part)
{
	return mime_part->content_type;
}

GMimeContentField *
camel_mime_part_get_content_type (CamelMimePart *mime_part)
{
	return CMP_CLASS(mime_part)->get_content_type (mime_part);
}

/*********/



static void
_set_content_object (CamelMedium *medium, CamelDataWrapper *content)
{
	CamelMimePart *mime_part = CAMEL_MIME_PART (medium);
	GMimeContentField *object_content_field;

	parent_class->set_content_object (medium, content);

	object_content_field = camel_data_wrapper_get_mime_type_field (content);
	if (mime_part->content_type && (mime_part->content_type != object_content_field)) 
		gmime_content_field_unref (mime_part->content_type);
	mime_part->content_type = object_content_field;
	gmime_content_field_ref (object_content_field);
	CAMEL_LOG_FULL_DEBUG ("Leaving CamelMimePart::set_content_object\n");
	
}

static CamelDataWrapper *
_get_content_object (CamelMedium *medium)
{
	CamelMimePart *mime_part = CAMEL_MIME_PART (medium);
	CamelStream *stream;
	CamelStream *decoded_stream;

	CAMEL_LOG_FULL_DEBUG ("CamelMimePart::get_content_object entering\n");

	if (!medium->content ) {
		stream = mime_part->content_input_stream; 
		decoded_stream = stream;

		switch (mime_part->encoding) {
		
		case CAMEL_MIME_PART_ENCODING_DEFAULT:
		case CAMEL_MIME_PART_ENCODING_7BIT:
		case CAMEL_MIME_PART_ENCODING_8BIT:
		case CAMEL_MIME_PART_ENCODING_QUOTEDPRINTABLE:
			break;

		case CAMEL_MIME_PART_ENCODING_BASE64:
			decoded_stream = camel_stream_b64_new_with_input_stream (stream);
			camel_stream_b64_set_mode (CAMEL_STREAM_B64 (decoded_stream), 
						   CAMEL_STREAM_B64_DECODER);
			break;
		}

		printf ("*************************** encoding : %d\n", mime_part->encoding);
		camel_mime_part_construct_content_from_stream (mime_part, decoded_stream);
		
	} else {
		CAMEL_LOG_FULL_DEBUG ("CamelMimePart::get_content_object part has a pointer "
				      "to a content object\n");
	}

	CAMEL_LOG_FULL_DEBUG ("CamelMimePart::get_content_object leaving\n");

	return parent_class->get_content_object (medium);
		
}


/* **** */




/**********************************************************************/
#ifdef WHPT
#warning : WHPT is already defined !!!!!!
#endif
#define WHPT gmime_write_header_pair_to_stream


static void
_write_content_to_stream (CamelMimePart *mime_part, CamelStream *stream)
{
	CamelMedium *medium = CAMEL_MEDIUM (mime_part);
	CamelStream *wrapper_stream;

	CamelDataWrapper *content = medium->content;
	CAMEL_LOG_FULL_DEBUG ( "Entering CamelMimePart::_write_content_to_stream\n");
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::_write_content_to_stream, content=%p\n", content);
	if (!content) return;

	switch (mime_part->encoding) {
	case CAMEL_MIME_PART_ENCODING_DEFAULT:
	case CAMEL_MIME_PART_ENCODING_7BIT:
	case CAMEL_MIME_PART_ENCODING_8BIT:
		camel_data_wrapper_write_to_stream (content, stream);
		break;
	case CAMEL_MIME_PART_ENCODING_BASE64:
		wrapper_stream = camel_data_wrapper_get_stream (content);
		if (wrapper_stream == NULL) {
			/* FIXME in this case, we should probably copy stuff
                           in-memory and make sure things work anyway.  */
			g_warning ("Class `%s' does not implement `get_stream'",
				   gtk_type_name (GTK_OBJECT (content)->klass->type));
		}
		gmime_encode_base64_to_stream (wrapper_stream, stream);
		break;
	default:
		g_warning ("Encoding type `%s' not supported.",
			   camel_mime_part_encoding_to_string
			   (mime_part->encoding));
	}

	CAMEL_LOG_FULL_DEBUG ( "Leaving CamelMimePart::_write_content_to_stream\n");
}





static void
_write_to_stream (CamelDataWrapper *data_wrapper, CamelStream *stream)
{
	CamelMimePart *mp = CAMEL_MIME_PART (data_wrapper);
	CamelMedium *medium = CAMEL_MEDIUM (data_wrapper);

	CAMEL_LOG_FULL_DEBUG ( "Entering CamelMimePart::write_to_stream\n");
	
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::write_to_stream writing content-disposition\n");
	gmime_content_field_write_to_stream(mp->disposition, stream);
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::write_to_stream writing content-transfer-encoding\n");
	WHPT (stream, "Content-Transfer-Encoding",
	      camel_mime_part_encoding_to_string (mp->encoding));
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::write_to_stream writing content-description\n");
	WHPT (stream, "Content-Description", mp->description);
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::write_to_stream writing content-MD5\n");
	WHPT (stream, "Content-MD5", mp->content_MD5);
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::write_to_stream writing content-id\n");
	WHPT (stream, "Content-id", mp->content_id);
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::write_to_stream writing content-languages\n");
	gmime_write_header_with_glist_to_stream (stream, "Content-Language", mp->content_languages,", ");
	
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::write_to_stream writing other headers\n");
	gmime_write_header_table_to_stream (stream, medium->headers);
	
	CAMEL_LOG_FULL_DEBUG ( "CamelMimePart::write_to_stream writing content-type\n");
	gmime_content_field_write_to_stream (mp->content_type, stream);
	
	camel_stream_write_string(stream,"\n");
	_write_content_to_stream (mp, stream);
	
}



/*******************************/
/* mime part parsing           */

static gboolean
_parse_header_pair (CamelMimePart *mime_part, gchar *header_name, gchar *header_value)
{
	CamelHeaderType header_type;
	gboolean header_handled = FALSE;
	
	
	header_type = (CamelHeaderType) g_hash_table_lookup (header_name_table, header_name);
	switch (header_type) {
		
	case HEADER_DESCRIPTION:
		CAMEL_LOG_FULL_DEBUG (
			   "CamelMimePart::parse_header_pair found HEADER_DESCRIPTION: %s\n",
			   header_value );
		
		camel_mime_part_set_description (mime_part, header_value);
		header_handled = TRUE;
		break;
		
	case HEADER_DISPOSITION:
		CAMEL_LOG_FULL_DEBUG (
			   "CamelMimePart::parse_header_pair found HEADER_DISPOSITION: %s\n",
			   header_value);
		
		camel_mime_part_set_disposition (mime_part, header_value);
		header_handled = TRUE;
		break;
		
	case HEADER_CONTENT_ID:
		CAMEL_LOG_FULL_DEBUG (
			   "CamelMimePart::parse_header_pair found HEADER_CONTENT_ID: %s\n",
			   header_value);
		
		CMP_CLASS(mime_part)->set_content_id (mime_part, header_value);
		header_handled = TRUE;
		break;
		
	case HEADER_ENCODING:
		CAMEL_LOG_FULL_DEBUG (
			   "CamelMimePart::parse_header_pair found HEADER_ENCODING: %s\n",
			   header_value);
		
		camel_mime_part_set_encoding
			(mime_part,
			 camel_mime_part_encoding_from_string (header_value));
		header_handled = TRUE;
		break;
		
	case HEADER_CONTENT_MD5:
		CAMEL_LOG_FULL_DEBUG (
			   "CamelMimePart::parse_header_pair found HEADER_CONTENT_MD5: %s\n",
			   header_value );
		
		CMP_CLASS(mime_part)->set_content_MD5 (mime_part, header_value);		
		header_handled = TRUE;
		break;
		
	case HEADER_CONTENT_TYPE: 
		CAMEL_LOG_FULL_DEBUG (
			   "CamelMimePart::parse_header_pair found HEADER_CONTENT_TYPE: %s\n",
			   header_value );
		
		gmime_content_field_construct_from_string (mime_part->content_type, header_value);
		header_handled = TRUE;
		break;
		
		
	}
	
	
	if (header_handled) {
		return TRUE;
	} else return FALSE;
	
}




static void
_construct_from_stream (CamelDataWrapper *data_wrapper, CamelStream *stream)
{

	CamelMimePart *mime_part = CAMEL_MIME_PART (data_wrapper);
	
	CAMEL_LOG_FULL_DEBUG ("CamelMimePart::construct_from_stream entering\n");
	camel_mime_part_construct_headers_from_stream (mime_part, stream);
	
	camel_mime_part_store_stream_in_buffer (mime_part, stream);
	CAMEL_LOG_FULL_DEBUG ("CamelMimePart::construct_from_stream leaving\n");

}




static void 
_set_input_stream (CamelDataWrapper *data_wrapper, CamelStream *stream)
{
	CamelMimePart *mime_part = CAMEL_MIME_PART (data_wrapper);
	CamelSeekableStream *seekable_stream;
	guint32 content_stream_inf_bound;
	

	CAMEL_LOG_FULL_DEBUG ("CamelMimePart::set_input_stream entering\n");

	g_assert (CAMEL_IS_SEEKABLE_STREAM (stream));
	seekable_stream = CAMEL_SEEKABLE_STREAM (stream);

	/* call parent class implementation */
	CAMEL_DATA_WRAPPER_CLASS (parent_class)->set_input_stream (data_wrapper, stream);


	camel_mime_part_construct_headers_from_stream (mime_part, stream);
	
	/* set the input stream for the content object */
	content_stream_inf_bound = camel_seekable_stream_get_current_position (seekable_stream);
	mime_part->content_input_stream = 
		camel_seekable_substream_new_with_seekable_stream_and_bounds (seekable_stream,
									      content_stream_inf_bound, 
									      -1);
	

	CAMEL_LOG_FULL_DEBUG ("CamelMimePart::set_input_stream leaving\n");

}


static CamelStream *
_get_output_stream (CamelDataWrapper *data_wrapper)
{
	CamelMimePart *mime_part = CAMEL_MIME_PART (data_wrapper);
	CamelStream *input_stream;
	CamelStream *output_stream;
	/* ** FIXME : bogus bogus bogus - test test test */

	CAMEL_LOG_FULL_DEBUG ("CamelMimePart::get_output_stream leaving\n");
	input_stream = camel_data_wrapper_get_input_stream (data_wrapper);
	
	if (input_stream == NULL)
		return NULL;

	switch (mime_part->encoding) {
		
	case CAMEL_MIME_PART_ENCODING_DEFAULT:
	case CAMEL_MIME_PART_ENCODING_7BIT:
	case CAMEL_MIME_PART_ENCODING_8BIT:
		return input_stream;
		
	case CAMEL_MIME_PART_ENCODING_BASE64:
		output_stream = camel_stream_b64_new_with_input_stream (input_stream);
		camel_stream_b64_set_mode (CAMEL_STREAM_B64 (output_stream), 
					   CAMEL_STREAM_B64_ENCODER);
		return output_stream;

	case CAMEL_MIME_PART_ENCODING_QUOTEDPRINTABLE:
		return input_stream;
	}

	CAMEL_LOG_FULL_DEBUG ("CamelMimePart::get_output_stream leaving\n");

	return NULL;
}


const gchar *
camel_mime_part_encoding_to_string (CamelMimePartEncodingType encoding)
{
	switch (encoding) {
	case CAMEL_MIME_PART_ENCODING_DEFAULT:
	case CAMEL_MIME_PART_ENCODING_7BIT:
		return "7bit";
	case CAMEL_MIME_PART_ENCODING_8BIT:
		return "8bit";
	case CAMEL_MIME_PART_ENCODING_BASE64:
		return "base64";
	case CAMEL_MIME_PART_ENCODING_QUOTEDPRINTABLE:
		return "quoted-printable";
	}
	return "";
}



/* FIXME I am not sure this is the correct way to do this.  */
CamelMimePartEncodingType
camel_mime_part_encoding_from_string (const gchar *string)
{
	printf ("*************** encoding string : _%s_\n", string);
	if (strcmp (string, "7bit") == 0)
		return CAMEL_MIME_PART_ENCODING_7BIT;
	else if (strcmp (string, "8bit") == 0)
		return CAMEL_MIME_PART_ENCODING_8BIT;
	else if (strcmp (string, "base64") == 0)
		return CAMEL_MIME_PART_ENCODING_BASE64;
	else if (strcmp (string, "quoted-printable") == 0)
		return CAMEL_MIME_PART_ENCODING_QUOTEDPRINTABLE;
	else
		/* FIXME?  Spit a warning?  */
		return CAMEL_MIME_PART_ENCODING_DEFAULT;
}


/******************************/
/**  Misc utility functions  **/


/**
 * camel_mime_part_set_text: set the content to be some text
 * @camel_mime_part: Mime part 
 * @text: the text
 * 
 * Utility function used to set the content of a mime part object to 
 * be a text string. When @text is NULL, this routine can be used as
 * a way to remove old text content.
 * 
 **/
void 
camel_mime_part_set_text (CamelMimePart *camel_mime_part, const gchar *text)
{
	CamelSimpleDataWrapper *simple_data_wrapper;
	CamelMedium *medium = CAMEL_MEDIUM (camel_mime_part);

	CAMEL_LOG_FULL_DEBUG ("CamelMimePart:: Entering set_text\n");
	CAMEL_LOG_TRACE ("CamelMimePart::set_text, setting text as a mime part content\n");
	if (medium->content) {
		CAMEL_LOG_FULL_DEBUG ("CamelMimePart::set_text unreferencing old content object\n");
		gtk_object_unref (GTK_OBJECT (medium->content));
	}
	if (text) {
		simple_data_wrapper = camel_simple_data_wrapper_new ();
		CAMEL_LOG_FULL_DEBUG ("CamelMimePart::set_text calling CamelSimpleDataWrapper:set_text with %d chars\n", strlen (text));
		camel_data_wrapper_set_mime_type (CAMEL_DATA_WRAPPER (simple_data_wrapper), "text/plain");
		camel_simple_data_wrapper_set_text ( simple_data_wrapper, text);
		camel_medium_set_content_object ( CAMEL_MEDIUM (camel_mime_part), CAMEL_DATA_WRAPPER (simple_data_wrapper));
		gtk_object_unref (GTK_OBJECT (simple_data_wrapper));
	} else medium->content = NULL;
	
	CAMEL_LOG_FULL_DEBUG ("CamelMimePart:: Leaving camel_mime_part_set_text\n");
}