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fcd0df7c8bdc19400d0eaaa135cca452008db705
evolution/camel/camel-multipart.c
bertrand b39cda14b7 revamped so that it uses the output stream of the data wrapper 
2000-02-17  bertrand  <Bertrand.Guiheneuf@aful.org>

	* camel/camel-formatter.c (handle_text_plain):
	revamped so that it uses the output stream
	of the data wrapper
	(handle_text_html): ditto.


	* camel/camel-simple-data-wrapper.h:
	* camel/camel-simple-data-wrapper.c (camel_simple_data_wrapper_new):
	use (void) instead of ().
	(_get_output_stream): simple implementation.

A lot of small fixes so that the new parser scheme
works properly. Simple implementation of the stream
though.

Changed vette-formatter files so that they work with the
new scheme.

The new parser is now in a usable state. Still needs some work but the
infrastructure is here. /me is happy.

svn path=/trunk/; revision=1822
2000-02-17 15:19:04 +00:00

575 lines
17 KiB
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-multipart.c : Abstract class for a multipart */
/*
*
* 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 "camel-log.h"
#include "gmime-content-field.h"
#include "gmime-utils.h"
#include "camel-stream-mem.h"
#include "camel-seekable-substream.h"
#include "camel-multipart.h"
static void _add_part (CamelMultipart *multipart,
CamelMimeBodyPart *part);
static void _add_part_at (CamelMultipart *multipart,
CamelMimeBodyPart *part,
guint index);
static void _remove_part (CamelMultipart *multipart,
CamelMimeBodyPart *part);
static CamelMimeBodyPart * _remove_part_at (CamelMultipart *multipart,
guint index);
static CamelMimeBodyPart * _get_part (CamelMultipart *multipart,
guint index);
static guint _get_number (CamelMultipart *multipart);
static void _set_parent (CamelMultipart *multipart,
CamelMimePart *parent);
static CamelMimePart * _get_parent (CamelMultipart *multipart);
static void _set_boundary (CamelMultipart *multipart,
gchar *boundary);
static const gchar * _get_boundary (CamelMultipart *multipart);
static void _write_to_stream (CamelDataWrapper *data_wrapper,
CamelStream *stream);
static void _set_input_stream (CamelDataWrapper *data_wrapper,
CamelStream *stream);
static void _finalize (GtkObject *object);
static CamelDataWrapperClass *parent_class=NULL;
/* Returns the class for a CamelMultipart */
#define CMP_CLASS(so) CAMEL_MULTIPART_CLASS (GTK_OBJECT(so)->klass)
/* Returns the class for a CamelDataWrapper */
#define CDW_CLASS(so) CAMEL_DATA_WRAPPER_CLASS (GTK_OBJECT(so)->klass)
static void
camel_multipart_class_init (CamelMultipartClass *camel_multipart_class)
{
CamelDataWrapperClass *camel_data_wrapper_class = CAMEL_DATA_WRAPPER_CLASS (camel_multipart_class);
GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (camel_multipart_class);
parent_class = gtk_type_class (camel_data_wrapper_get_type ());
/* virtual method definition */
camel_multipart_class->add_part = _add_part;
camel_multipart_class->add_part_at = _add_part_at;
camel_multipart_class->remove_part = _remove_part;
camel_multipart_class->remove_part_at = _remove_part_at;
camel_multipart_class->get_part = _get_part;
camel_multipart_class->get_number = _get_number;
camel_multipart_class->set_parent = _set_parent;
camel_multipart_class->get_parent = _get_parent;
camel_multipart_class->set_boundary = _set_boundary;
camel_multipart_class->get_boundary = _get_boundary;
/* virtual method overload */
camel_data_wrapper_class->write_to_stream = _write_to_stream;
camel_data_wrapper_class->set_input_stream = _set_input_stream;
gtk_object_class->finalize = _finalize;
}
static void
camel_multipart_init (gpointer object, gpointer klass)
{
CamelMultipart *multipart = CAMEL_MULTIPART (object);
camel_data_wrapper_set_mime_type ( CAMEL_DATA_WRAPPER (multipart), "multipart");
camel_multipart_set_boundary (multipart, "__camel_boundary__");
multipart->preface = NULL;
multipart->postface = NULL;
}
GtkType
camel_multipart_get_type (void)
{
static GtkType camel_multipart_type = 0;
if (!camel_multipart_type) {
GtkTypeInfo camel_multipart_info =
{
"CamelMultipart",
sizeof (CamelMultipart),
sizeof (CamelMultipartClass),
(GtkClassInitFunc) camel_multipart_class_init,
(GtkObjectInitFunc) camel_multipart_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
camel_multipart_type = gtk_type_unique (camel_data_wrapper_get_type (), &camel_multipart_info);
}
return camel_multipart_type;
}
static void
_unref_part (gpointer data, gpointer user_data)
{
GtkObject *body_part = GTK_OBJECT (data);
gtk_object_unref (body_part);
}
static void
_finalize (GtkObject *object)
{
CamelMultipart *multipart = CAMEL_MULTIPART (object);
CAMEL_LOG_FULL_DEBUG ("Entering CamelMultipart::finalize\n");
if (multipart->parent) gtk_object_unref (GTK_OBJECT (multipart->parent));
g_list_foreach (multipart->parts, _unref_part, NULL);
if (multipart->boundary) g_free (multipart->boundary);
if (multipart->preface) g_free (multipart->preface);
if (multipart->postface) g_free (multipart->postface);
GTK_OBJECT_CLASS (parent_class)->finalize (object);
CAMEL_LOG_FULL_DEBUG ("Leaving CamelMultipart::finalize\n");
}
CamelMultipart *
camel_multipart_new (void)
{
CamelMultipart *multipart;
CAMEL_LOG_FULL_DEBUG ("CamelMultipart:: Entering new()\n");
multipart = (CamelMultipart *)gtk_type_new (CAMEL_MULTIPART_TYPE);
multipart->preface = NULL;
multipart->postface = NULL;
CAMEL_LOG_FULL_DEBUG ("CamelMultipart:: Leaving new()\n");
return multipart;
}
static void
_add_part (CamelMultipart *multipart, CamelMimeBodyPart *part)
{
multipart->parts = g_list_append (multipart->parts, part);
if (part) gtk_object_ref (GTK_OBJECT (part));
}
void
camel_multipart_add_part (CamelMultipart *multipart, CamelMimeBodyPart *part)
{
CMP_CLASS (multipart)->add_part (multipart, part);
}
static void
_add_part_at (CamelMultipart *multipart, CamelMimeBodyPart *part, guint index)
{
multipart->parts = g_list_insert (multipart->parts, part, index);
if (part) gtk_object_ref (GTK_OBJECT (part));
}
void
camel_multipart_add_part_at (CamelMultipart *multipart, CamelMimeBodyPart *part, guint index)
{
CMP_CLASS (multipart)->add_part_at (multipart, part, index);
}
static void
_remove_part (CamelMultipart *multipart, CamelMimeBodyPart *part)
{
if (!multipart->parts) {
CAMEL_LOG_FULL_DEBUG ("CamelMultipart::remove_part part list id void\n");
return;
}
multipart->parts = g_list_remove (multipart->parts, part);
if (part) gtk_object_unref (GTK_OBJECT (part));
}
void
camel_multipart_remove_part (CamelMultipart *multipart, CamelMimeBodyPart *part)
{
CMP_CLASS (multipart)->remove_part (multipart, part);
}
static CamelMimeBodyPart *
_remove_part_at (CamelMultipart *multipart, guint index)
{
GList *parts_list;
GList *part_to_remove;
CamelMimeBodyPart *removed_body_part;
CAMEL_LOG_FULL_DEBUG ("CamelMultipart:: Entering remove_part_at\n");
CAMEL_LOG_TRACE ("CamelMultipart::remove_part_at : Removing part number %d\n", index);
if (!(multipart->parts)) {
CAMEL_LOG_FULL_DEBUG ("CamelMultipart::remove_part_at part list is void \n");
return NULL;
}
parts_list = multipart->parts;
part_to_remove = g_list_nth (parts_list, index);
if (!part_to_remove) {
CAMEL_LOG_WARNING ("CamelMultipart::remove_part_at : part to remove is NULL\n");
CAMEL_LOG_FULL_DEBUG ("CamelMultipart::remove_part_at : index = %d, number of parts=%d\n",
index, g_list_length (parts_list));
return NULL;
}
removed_body_part = CAMEL_MIME_BODY_PART (part_to_remove->data);
multipart->parts = g_list_remove_link (parts_list, part_to_remove);
if (part_to_remove->data) gtk_object_unref (GTK_OBJECT (part_to_remove->data));
g_list_free_1 (part_to_remove);
CAMEL_LOG_FULL_DEBUG ("CamelMultipart:: Leaving remove_part_at\n");
return removed_body_part;
}
CamelMimeBodyPart *
camel_multipart_remove_part_at (CamelMultipart *multipart, guint index)
{
return CMP_CLASS (multipart)->remove_part_at (multipart, index);
}
static CamelMimeBodyPart *
_get_part (CamelMultipart *multipart, guint index)
{
GList *part;
if (!(multipart->parts)) {
CAMEL_LOG_FULL_DEBUG ("CamelMultipart::get_part part list is void \n");
return NULL;
}
part = g_list_nth (multipart->parts, index);
if (part) return CAMEL_MIME_BODY_PART (part->data);
else {
CAMEL_LOG_FULL_DEBUG ("CamelMultipart::get_part part number %d not found\n", index);
return NULL;
}
}
CamelMimeBodyPart *
camel_multipart_get_part (CamelMultipart *multipart, guint index)
{
return CMP_CLASS (multipart)->get_part (multipart, index);
}
static guint
_get_number (CamelMultipart *multipart)
{
return g_list_length (multipart->parts);
}
guint
camel_multipart_get_number (CamelMultipart *multipart)
{
return CMP_CLASS (multipart)->get_number (multipart);
}
static void
_set_parent (CamelMultipart *multipart, CamelMimePart *parent)
{
multipart->parent = parent;
if (parent) gtk_object_ref (GTK_OBJECT (parent));
}
void
camel_multipart_set_parent (CamelMultipart *multipart, CamelMimePart *parent)
{
CMP_CLASS (multipart)->set_parent (multipart, parent);
}
static CamelMimePart *
_get_parent (CamelMultipart *multipart)
{
return multipart->parent;
}
CamelMimePart *
camel_multipart_get_parent (CamelMultipart *multipart)
{
return CMP_CLASS (multipart)->get_parent (multipart);
}
static void
_set_boundary (CamelMultipart *multipart, gchar *boundary)
{
gmime_content_field_set_parameter (CAMEL_DATA_WRAPPER (multipart)->mime_type, "boundary", boundary);
}
void
camel_multipart_set_boundary (CamelMultipart *multipart, gchar *boundary)
{
CMP_CLASS (multipart)->set_boundary (multipart, boundary);
}
static const gchar *
_get_boundary (CamelMultipart *multipart)
{
const gchar *boundary;
CAMEL_LOG_FULL_DEBUG ("Entering CamelMultipart::_get_boundary\n");
if (!CAMEL_DATA_WRAPPER (multipart)->mime_type) {
CAMEL_LOG_WARNING ("CamelMultipart::_get_boundary CAMEL_DATA_WRAPPER (multipart)->mime_type is NULL\n");
return NULL;
}
boundary = gmime_content_field_get_parameter (CAMEL_DATA_WRAPPER (multipart)->mime_type, "boundary");
CAMEL_LOG_FULL_DEBUG ("Leaving CamelMultipart::boundary found : \"%s\"\n", boundary);
CAMEL_LOG_FULL_DEBUG ("Leaving CamelMultipart::_get_boundary\n");
return boundary;
}
const gchar *
camel_multipart_get_boundary (CamelMultipart *multipart)
{
return CMP_CLASS (multipart)->get_boundary (multipart);
}
struct _print_part_user_data {
CamelStream *stream;
const gchar *boundary;
};
static void
_print_part (gpointer data, gpointer user_data)
{
CamelMimeBodyPart *body_part = CAMEL_MIME_BODY_PART (data);
struct _print_part_user_data *ud = (struct _print_part_user_data *)user_data;
if (ud->boundary) camel_stream_write_strings (ud->stream, "\n--", ud->boundary, "\n", NULL);
else camel_stream_write_strings (ud->stream, "\n--\n", NULL);
camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (body_part), ud->stream);
}
static void
_write_to_stream (CamelDataWrapper *data_wrapper, CamelStream *stream)
{
CamelMultipart *multipart = CAMEL_MULTIPART (data_wrapper);
struct _print_part_user_data ud;
const gchar *boundary;
CAMEL_LOG_FULL_DEBUG ("Entering CamelMultipart::_write_to_stream entering\n");
boundary = camel_multipart_get_boundary (multipart);
CAMEL_LOG_FULL_DEBUG ("Entering CamelMultipart::_write_to_stream, boundary = %s\n", boundary);
g_return_if_fail (boundary);
ud.boundary = boundary;
ud.stream = stream;
if (multipart->preface) camel_stream_write_strings (stream, multipart->preface, NULL);
g_list_foreach (multipart->parts, _print_part, (gpointer)&ud);
camel_stream_write_strings (stream, "\n--", boundary, "--\n", NULL);
if (multipart->postface) camel_stream_write_strings (stream, multipart->postface, NULL);
CAMEL_LOG_FULL_DEBUG ("Leaving CamelMultipart::_write_to_stream leaving \n");
}
/**********************/
/* new implementation */
/**
* _localize_part: localize one part in a multipart environement.
* @stream: the stream to read the lines from.
* @normal_boundary: end of part bundary.
* @end_boundary: end of multipart boundary.
* @end_position : end position of the mime part
*
* This routine is a bit special: RFC 2046 says that, in a multipart
* environment, the last crlf before a boundary belongs to the boundary.
* Thus, if there is no blank line before the boundary, the last crlf
* of the last line of the part is removed.
*
* Return value: true if the last boundary element has been found or if no more data was available from the stream, flase otherwise
**/
static gboolean
_localize_part (CamelStream *stream,
gchar *normal_boundary,
gchar *end_boundary,
guint32 *end_position)
{
gchar *new_line = NULL;
gboolean end_of_part = FALSE;
gboolean last_part = FALSE;
guint32 last_position;
/* Note for future enhancements */
/* RFC 2046 precises that when parsing the content of a multipart
* element, the program should not think it will find the last boundary,
* and in particular, the message could have been damaged during
* transport, the parsing should still be OK */
CAMEL_LOG_FULL_DEBUG ("CamelMultipart:: Entering _localize_part\n");
g_assert (CAMEL_IS_SEEKABLE_STREAM (stream));
last_position = camel_seekable_stream_get_current_position (CAMEL_SEEKABLE_STREAM (stream));
new_line = gmime_read_line_from_stream (stream);
while (new_line && !end_of_part && !last_part) {
end_of_part = (strcmp (new_line, normal_boundary) == 0);
last_part = (strcmp (new_line, end_boundary) == 0);
if (!end_of_part && !last_part) {
g_free (new_line);
last_position =
camel_seekable_stream_get_current_position (CAMEL_SEEKABLE_STREAM (stream));
new_line = gmime_read_line_from_stream (stream);
}
}
if (new_line) g_free (new_line);
else last_part = TRUE;
*end_position = last_position;
CAMEL_LOG_FULL_DEBUG ("CamelMultipart:: Leaving _localize_part\n");
return (last_part);
}
static void
_set_input_stream (CamelDataWrapper *data_wrapper, CamelStream *stream)
{
CamelMultipart *multipart = CAMEL_MULTIPART (data_wrapper);
CamelSeekableStream *seekable_stream = CAMEL_SEEKABLE_STREAM (stream);
const gchar *boundary;
gchar *real_boundary_line;
gchar *end_boundary_line;
gboolean end_of_multipart;
CamelMimeBodyPart *body_part;
guint32 part_begining, part_end;
CamelSeekableSubstream *body_part_input_stream;
guint32 saved_stream_pos;
CAMEL_LOG_FULL_DEBUG ("Entering CamelMultipart::_set_input_stream\n");
/* call parent class implementation */
parent_class->set_input_stream (data_wrapper, stream);
boundary = camel_multipart_get_boundary (multipart);
g_return_if_fail (boundary);
real_boundary_line = g_strdup_printf ("--%s", boundary);
end_boundary_line = g_strdup_printf ("--%s--", boundary);
/* read the prefix if any */
end_of_multipart = _localize_part (stream,
real_boundary_line,
end_boundary_line,
&part_end);
if (multipart->preface) g_free (multipart->preface);
/* if ( (new_part->str)[0] != '\0') multipart->preface = g_strdup (new_part->str); */
/* read all the real parts */
while (!end_of_multipart) {
/* determine the position of the begining of the part */
part_begining = camel_seekable_stream_get_current_position (seekable_stream);
CAMEL_LOG_FULL_DEBUG ("CamelMultipart::set_input_stream, detected a new part\n");
body_part = camel_mime_body_part_new ();
end_of_multipart = _localize_part (stream,
real_boundary_line,
end_boundary_line,
&part_end);
body_part_input_stream =
camel_seekable_substream_new_with_seekable_stream_and_bounds (seekable_stream,
part_begining,
part_end);
CAMEL_LOG_FULL_DEBUG ("CamelMultipart::set_input_stream, use a substream,\n"
"\tbegining = %d\n"
"\tend = %d\n",part_begining, part_end);
/* the seekable substream may change the position of the stream
so we must save it before calling set_input_stream */
saved_stream_pos = camel_seekable_stream_get_current_position (seekable_stream);
camel_data_wrapper_set_input_stream (CAMEL_DATA_WRAPPER (body_part),
CAMEL_STREAM (body_part_input_stream));
CAMEL_LOG_FULL_DEBUG ("CamelMultipart::set_input_stream,"
"new body part has input stream : %p\n", body_part_input_stream);
/* restore the stream position */
camel_seekable_stream_seek (seekable_stream, saved_stream_pos, CAMEL_STREAM_SET);
/* add the body part to the multipart object */
camel_multipart_add_part (multipart, body_part);
}
/* g_string_assign (new_part, ""); */
/* _localize_part (new_part, stream, real_boundary_line, end_boundary_line); */
if (multipart->postface) g_free (multipart->postface);
/* if ( (new_part->str)[0] != '\0') multipart->postface = g_strdup (new_part->str); */
/* g_string_free (new_part, TRUE); */
g_free (real_boundary_line);
g_free (end_boundary_line);
CAMEL_LOG_FULL_DEBUG ("Leaving CamelMultipart::_set_input_stream\n");
}
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