notmuch/show-message.c

/* notmuch - Not much of an email program, (just index and search)
 *
 * Copyright © 2009 Carl Worth
 * Copyright © 2009 Keith Packard
 *
 * 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 3 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, see http://www.gnu.org/licenses/ .
 *
 * Authors: Carl Worth <cworth@cworth.org>
 *	    Keith Packard <keithp@keithp.com>
 */

#include "notmuch-client.h"

static void
show_message_part (GMimeObject *part, int *part_count,
		   void (*show_part) (GMimeObject *part, int *part_count))
{
    *part_count = *part_count + 1;

    if (GMIME_IS_MULTIPART (part)) {
	GMimeMultipart *multipart = GMIME_MULTIPART (part);
	int i;

	for (i = 0; i < g_mime_multipart_get_count (multipart); i++) {
	    if (GMIME_IS_MULTIPART_SIGNED (multipart)) {
		/* Don't index the signature. */
		if (i == 1)
		    continue;
		if (i > 1)
		    fprintf (stderr, "Warning: Unexpected extra parts of mutlipart/signed. Continuing.\n");
	    }
	    show_message_part (g_mime_multipart_get_part (multipart, i),
			       part_count, show_part);
	}
	return;
    }

    if (GMIME_IS_MESSAGE_PART (part)) {
	GMimeMessage *mime_message;

	mime_message = g_mime_message_part_get_message (GMIME_MESSAGE_PART (part));

	show_message_part (g_mime_message_get_mime_part (mime_message),
			   part_count, show_part);

	return;
    }

    if (! (GMIME_IS_PART (part))) {
	fprintf (stderr, "Warning: Not displaying unknown mime part: %s.\n",
		 g_type_name (G_OBJECT_TYPE (part)));
	return;
    }

    (*show_part) (part, part_count);
}

notmuch_status_t
show_message_body (const char *filename,
		   void (*show_part) (GMimeObject *part, int *part_count))
{
    GMimeStream *stream = NULL;
    GMimeParser *parser = NULL;
    GMimeMessage *mime_message = NULL;
    notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS;
    static int initialized = 0;
    FILE *file = NULL;
    int part_count = 0;

    if (! initialized) {
	g_mime_init (0);
	initialized = 1;
    }

    file = fopen (filename, "r");
    if (! file) {
	fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));
	ret = NOTMUCH_STATUS_FILE_ERROR;
	goto DONE;
    }

    stream = g_mime_stream_file_new (file);
    g_mime_stream_file_set_owner (GMIME_STREAM_FILE (stream), FALSE);

    parser = g_mime_parser_new_with_stream (stream);

    mime_message = g_mime_parser_construct_message (parser);

    show_message_part (g_mime_message_get_mime_part (mime_message),
		       &part_count, show_part);

  DONE:
    if (mime_message)
	g_object_unref (mime_message);

    if (parser)
	g_object_unref (parser);

    if (stream)
	g_object_unref (stream);

    if (file)
	fclose (file);

    return ret;
}