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+ id 1XbHWr-0001JL-LH; Mon, 06 Oct 2014 17:17:21 -0600\r
+From: Austin Clements <aclements@csail.mit.edu>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH v2 02/12] lib: Refactor _notmuch_database_link_message\r
+Date: Mon, 6 Oct 2014 17:17:08 -0600\r
+Message-Id: <1412637438-4821-3-git-send-email-aclements@csail.mit.edu>\r
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+\r
+From: Austin Clements <amdragon@mit.edu>\r
+\r
+This moves the code to retrieve and clear the metadata thread ID out\r
+of _notmuch_database_link_message into its own function. This will\r
+simplify future changes.\r
+---\r
+ lib/database.cc | 69 +++++++++++++++++++++++++++++++++++----------------------\r
+ 1 file changed, 43 insertions(+), 26 deletions(-)\r
+\r
+diff --git a/lib/database.cc b/lib/database.cc\r
+index 4e68706..1c6ffc5 100644\r
+--- a/lib/database.cc\r
++++ b/lib/database.cc\r
+@@ -1958,6 +1958,37 @@ _notmuch_database_link_message_to_children (notmuch_database_t *notmuch,\r
+ return ret;\r
+ }\r
+ \r
++/* Fetch and clear the stored thread_id for message, or NULL if none. */\r
++static char *\r
++_consume_metadata_thread_id (void *ctx, notmuch_database_t *notmuch,\r
++ notmuch_message_t *message)\r
++{\r
++ const char *message_id;\r
++ string stored_id;\r
++ char *metadata_key;\r
++\r
++ message_id = notmuch_message_get_message_id (message);\r
++ metadata_key = _get_metadata_thread_id_key (ctx, message_id);\r
++\r
++ /* Check if we have already seen related messages to this one.\r
++ * If we have then use the thread_id that we stored at that time.\r
++ */\r
++ stored_id = notmuch->xapian_db->get_metadata (metadata_key);\r
++ if (stored_id.empty ()) {\r
++ return NULL;\r
++ } else {\r
++ Xapian::WritableDatabase *db;\r
++\r
++ db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);\r
++\r
++ /* Clear the metadata for this message ID. We don't need it\r
++ * anymore. */\r
++ db->set_metadata (metadata_key, "");\r
++\r
++ return talloc_strdup (ctx, stored_id.c_str ());\r
++ }\r
++}\r
++\r
+ /* Given a (mostly empty) 'message' and its corresponding\r
+ * 'message_file' link it to existing threads in the database.\r
+ *\r
+@@ -1988,42 +2019,25 @@ _notmuch_database_link_message (notmuch_database_t *notmuch,\r
+ notmuch_message_t *message,\r
+ notmuch_message_file_t *message_file)\r
+ {\r
++ void *local = talloc_new (NULL);\r
+ notmuch_status_t status;\r
+- const char *message_id, *thread_id = NULL;\r
+- char *metadata_key;\r
+- string stored_id;\r
+-\r
+- message_id = notmuch_message_get_message_id (message);\r
+- metadata_key = _get_metadata_thread_id_key (message, message_id);\r
+-\r
+- /* Check if we have already seen related messages to this one.\r
+- * If we have then use the thread_id that we stored at that time.\r
+- */\r
+- stored_id = notmuch->xapian_db->get_metadata (metadata_key);\r
+- if (! stored_id.empty()) {\r
+- Xapian::WritableDatabase *db;\r
+-\r
+- db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);\r
+-\r
+- /* Clear the metadata for this message ID. We don't need it\r
+- * anymore. */\r
+- db->set_metadata (metadata_key, "");\r
+- thread_id = stored_id.c_str();\r
++ const char *thread_id;\r
+ \r
+- _notmuch_message_add_term (message, "thread", thread_id);\r
+- }\r
+- talloc_free (metadata_key);\r
++ /* Check if the message already had a thread ID */\r
++ thread_id = _consume_metadata_thread_id (local, notmuch, message);\r
++ if (thread_id)\r
++ _notmuch_message_add_term (message, "thread", thread_id);\r
+ \r
+ status = _notmuch_database_link_message_to_parents (notmuch, message,\r
+ message_file,\r
+ &thread_id);\r
+ if (status)\r
+- return status;\r
++ goto DONE;\r
+ \r
+ status = _notmuch_database_link_message_to_children (notmuch, message,\r
+ &thread_id);\r
+ if (status)\r
+- return status;\r
++ goto DONE;\r
+ \r
+ /* If not part of any existing thread, generate a new thread ID. */\r
+ if (thread_id == NULL) {\r
+@@ -2032,7 +2046,10 @@ _notmuch_database_link_message (notmuch_database_t *notmuch,\r
+ _notmuch_message_add_term (message, "thread", thread_id);\r
+ }\r
+ \r
+- return NOTMUCH_STATUS_SUCCESS;\r
++ DONE:\r
++ talloc_free (local);\r
++\r
++ return status;\r
+ }\r
+ \r
+ notmuch_status_t\r
+-- \r
+2.1.0\r
+\r
projects / notmuch-archives.git / commitdiff