path: root/em-format/e-mail-parser-multipart-related.c

/*
 * e-mail-parser-multipart-related.c
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-mail-format-extensions.h"

#include <em-format/e-mail-parser-extension.h>
#include <em-format/e-mail-parser.h>
#include <em-format/e-mail-part-utils.h>
#include <e-util/e-util.h>

#include <camel/camel.h>

#include <string.h>

typedef struct _EMailParserMultipartRelated {
    GObject parent;
} EMailParserMultipartRelated;

typedef struct _EMailParserMultipartRelatedClass {
    GObjectClass parent_class;
} EMailParserMultipartRelatedClass;

static void e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface);
static void e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface);

G_DEFINE_TYPE_EXTENDED (
    EMailParserMultipartRelated,
    e_mail_parser_multipart_related,
    G_TYPE_OBJECT,
    0,
    G_IMPLEMENT_INTERFACE (
        E_TYPE_MAIL_EXTENSION,
        e_mail_parser_mail_extension_interface_init)
    G_IMPLEMENT_INTERFACE (
        E_TYPE_MAIL_PARSER_EXTENSION,
        e_mail_parser_parser_extension_interface_init));

static const gchar *parser_mime_types[] = {
    "multipart/related",
    NULL
};

static gboolean
empe_mp_related_parse (EMailParserExtension *extension,
                       EMailParser *parser,
                       CamelMimePart *part,
                       GString *part_id,
                       GCancellable *cancellable,
                       GQueue *out_mail_parts)
{
    CamelMultipart *mp;
    CamelMimePart *body_part, *display_part = NULL;
    gint i, nparts, partidlen, displayid = 0;

    mp = (CamelMultipart *) camel_medium_get_content ((CamelMedium *) part);

    if (!CAMEL_IS_MULTIPART (mp))
        return e_mail_parser_parse_part_as (
            parser, part, part_id,
            "application/vnd.evolution.source",
            cancellable, out_mail_parts);

    display_part = e_mail_part_get_related_display_part (part, &displayid);

    if (display_part == NULL)
        return e_mail_parser_parse_part_as (
            parser, part, part_id, "multipart/mixed",
            cancellable, out_mail_parts);

    /* The to-be-displayed part goes first */
    partidlen = part_id->len;
    g_string_append_printf (part_id, ".related.%d", displayid);

    e_mail_parser_parse_part (
        parser, display_part, part_id, cancellable, out_mail_parts);

    g_string_truncate (part_id, partidlen);

    /* Process the related parts */
    nparts = camel_multipart_get_number (mp);
    for (i = 0; i < nparts; i++) {
        GQueue work_queue = G_QUEUE_INIT;
        GList *head, *link;

        body_part = camel_multipart_get_part (mp, i);

        if (body_part == display_part)
            continue;

        g_string_append_printf (part_id, ".related.%d", i);

        e_mail_parser_parse_part (
            parser, body_part, part_id,
            cancellable, &work_queue);

        g_string_truncate (part_id, partidlen);

        head = g_queue_peek_head_link (&work_queue);

        for (link = head; link != NULL; link = g_list_next (link)) {
            EMailPart *mail_part = link->data;

            /* Don't render the part on it's own! */
            if (mail_part->cid != NULL)
                mail_part->is_hidden = TRUE;
        }

        e_queue_transfer (&work_queue, out_mail_parts);
    }

    return TRUE;
}

static void
e_mail_parser_multipart_related_class_init (EMailParserMultipartRelatedClass *class)
{
}

static void
e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface)
{
    iface->parse = empe_mp_related_parse;
}

static void
e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface)
{
    iface->mime_types = parser_mime_types;
}

static void
e_mail_parser_multipart_related_init (EMailParserMultipartRelated *parser)
{

}