/* thread.cc - Results of thread-based searches from a notmuch database
*
* Copyright © 2009 Carl Worth
*
* 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/ .
*
* Author: Carl Worth <cworth@cworth.org>
*/
#include "notmuch-private.h"
#include "database-private.h"
#include <xapian.h>
#include <gmime/gmime.h>
#include <glib.h> /* GHashTable */
struct _notmuch_thread {
notmuch_database_t *notmuch;
char *thread_id;
char *subject;
GHashTable *authors_hash;
char *authors;
GHashTable *tags;
int total_messages;
int matched_messages;
time_t oldest;
time_t newest;
};
static int
_notmuch_thread_destructor (notmuch_thread_t *thread)
{
g_hash_table_unref (thread->authors_hash);
g_hash_table_unref (thread->tags);
return 0;
}
static void
_thread_add_author (notmuch_thread_t *thread,
const char *author)
{
if (author == NULL)
return;
if (g_hash_table_lookup_extended (thread->authors_hash,
author, NULL, NULL))
return;
g_hash_table_insert (thread->authors_hash, xstrdup (author), NULL);
if (thread->authors)
thread->authors = talloc_asprintf (thread, "%s, %s",
thread->authors,
author);
else
thread->authors = talloc_strdup (thread, author);
}
static void
_thread_add_message (notmuch_thread_t *thread,
notmuch_message_t *message)
{
notmuch_tags_t *tags;
const char *tag;
time_t date;
InternetAddressList *list;
InternetAddress *address;
const char *from, *author;
from = notmuch_message_get_header (message, "from");
list = internet_address_list_parse_string (from);
if (list) {
address = internet_address_list_get_address (list, 0);
if (address) {
author = internet_address_get_name (address);
if (author == NULL) {
InternetAddressMailbox *mailbox;
mailbox = INTERNET_ADDRESS_MAILBOX (address);
author = internet_address_mailbox_get_addr (mailbox);
}
_thread_add_author (thread, author);
}
g_object_unref (G_OBJECT (list));
}
if (! thread->subject) {
const char *subject;
subject = notmuch_message_get_header (message, "subject");
thread->subject = talloc_strdup (thread, subject);
}
for (tags = notmuch_message_get_tags (message);
notmuch_tags_has_more (tags);
notmuch_tags_advance (tags))
{
tag = notmuch_tags_get (tags);
g_hash_table_insert (thread->tags, xstrdup (tag), NULL);
}
thread->total_messages++;
}
static void
_thread_add_matched_message (notmuch_thread_t *thread,
notmuch_message_t *message)
{
time_t date;
date = notmuch_message_get_date (message);
if (date < thread->oldest || ! thread->matched_messages)
thread->oldest = date;
if (date > thread->newest || ! thread->matched_messages)
thread->newest = date;
thread->matched_messages++;
}
/* Create a new notmuch_thread_t object for the given thread ID,
* treating any messages matching 'query_string' as "matched".
*
* Creating the thread will trigger two database searches. The first
* is for all messages belonging to the thread, (to get the first
* subject line, the total count of messages, and all authors). The
* second search is for all messages that are in the thread and that
* also match the given query_string. This is to allow for a separate
* count of matched messages, and to allow a viewer to diplay these
* messages differently.
*
* Here, 'ctx' is talloc context for the resulting thread object.
*
* This function returns NULL in the case of any error.
*/
notmuch_thread_t *
_notmuch_thread_create (void *ctx,
notmuch_database_t *notmuch,
const char *thread_id,
const char *query_string)
{
notmuch_thread_t *thread;
const char *thread_id_query_string, *matched_query_string;
notmuch_query_t *thread_id_query, *matched_query;
notmuch_messages_t *messages;
thread_id_query_string = talloc_asprintf (ctx, "thread:%s", thread_id);
if (unlikely (query_string == NULL))
return NULL;
matched_query_string = talloc_asprintf (ctx, "%s AND (%s)",
thread_id_query_string,
query_string);
if (unlikely (matched_query_string == NULL))
return NULL;
thread_id_query = notmuch_query_create (notmuch, thread_id_query_string);
if (unlikely (thread_id_query == NULL))
return NULL;
matched_query = notmuch_query_create (notmuch, matched_query_string);
if (unlikely (thread_id_query == NULL))
return NULL;
thread = talloc (ctx, notmuch_thread_t);
if (unlikely (thread == NULL))
return NULL;
talloc_set_destructor (thread, _notmuch_thread_destructor);
thread->notmuch = notmuch;
thread->thread_id = talloc_strdup (thread, thread_id);
thread->subject = NULL;
thread->authors_hash = g_hash_table_new_full (g_str_hash, g_str_equal,
free, NULL);
thread->authors = NULL;
thread->tags = g_hash_table_new_full (g_str_hash, g_str_equal,
free, NULL);
thread->total_messages = 0;
thread->matched_messages = 0;
thread->oldest = 0;
thread->newest = 0;
notmuch_query_set_sort (thread_id_query, NOTMUCH_SORT_DATE);
for (messages = notmuch_query_search_messages (thread_id_query, 0, -1);
notmuch_messages_has_more (messages);
notmuch_messages_advance (messages))
{
_thread_add_message (thread, notmuch_messages_get (messages));
}
notmuch_query_destroy (thread_id_query);
for (messages = notmuch_query_search_messages (matched_query, 0, -1);
notmuch_messages_has_more (messages);
notmuch_messages_advance (messages))
{
_thread_add_matched_message (thread, notmuch_messages_get (messages));
}
notmuch_query_destroy (matched_query);
return thread;
}
const char *
notmuch_thread_get_thread_id (notmuch_thread_t *thread)
{
return thread->thread_id;
}
int
notmuch_thread_get_total_messages (notmuch_thread_t *thread)
{
return thread->total_messages;
}
int
notmuch_thread_get_matched_messages (notmuch_thread_t *thread)
{
return thread->matched_messages;
}
const char *
notmuch_thread_get_authors (notmuch_thread_t *thread)
{
return thread->authors;
}
const char *
notmuch_thread_get_subject (notmuch_thread_t *thread)
{
return thread->subject;
}
time_t
notmuch_thread_get_oldest_date (notmuch_thread_t *thread)
{
return thread->oldest;
}
time_t
notmuch_thread_get_newest_date (notmuch_thread_t *thread)
{
return thread->newest;
}
notmuch_tags_t *
notmuch_thread_get_tags (notmuch_thread_t *thread)
{
notmuch_tags_t *tags;
GList *keys, *l;
tags = _notmuch_tags_create (thread);
if (unlikely (tags == NULL))
return NULL;
keys = g_hash_table_get_keys (thread->tags);
for (l = keys; l; l = l->next)
_notmuch_tags_add_tag (tags, (char *) l->data);
g_list_free (keys);
_notmuch_tags_prepare_iterator (tags);
return tags;
}
void
notmuch_thread_destroy (notmuch_thread_t *thread)
{
talloc_free (thread);
}
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