X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=message.cc;h=21befc20ab0299936b78d374f1cdcd89209bccb6;hp=a2ecda2ddc050f13e340fca36a9530813644f3c5;hb=36809b5dfb2344c9d3ce4220b2717fd0306e216b;hpb=69b25a75ec8f4a8b27fe25f234a39a7e67287d36

diff --git a/message.cc b/message.cc
index a2ecda2d..21befc20 100644
--- a/message.cc
+++ b/message.cc
@@ -41,58 +41,12 @@ struct _notmuch_thread_ids {
     char *next;
 };
 
-#define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0]))
-
-/* These prefix values are specifically chosen to be compatible
- * with sup, (http://sup.rubyforge.org), written by
- * William Morgan <wmorgan-sup@masanjin.net>, and released
- * under the GNU GPL v2.
- */
-
-typedef struct {
-    const char *name;
-    const char *prefix;
-} prefix_t;
-
-prefix_t NORMAL_PREFIX[] = {
-    { "subject", "S" },
-    { "body", "B" },
-    { "from_name", "FN" },
-    { "to_name", "TN" },
-    { "name", "N" },
-    { "attachment", "A" }
-};
-
-prefix_t BOOLEAN_PREFIX[] = {
-    { "type", "K" },
-    { "from_email", "FE" },
-    { "to_email", "TE" },
-    { "email", "E" },
-    { "date", "D" },
-    { "label", "L" },
-    { "tag", "L" },
-    { "source_id", "I" },
-    { "attachment_extension", "O" },
-    { "msgid", "Q" },
-    { "thread", "H" },
-    { "ref", "R" }
-};
-
-const char *
-_find_prefix (const char *name)
-{
-    unsigned int i;
-
-    for (i = 0; i < ARRAY_SIZE (NORMAL_PREFIX); i++)
-	if (strcmp (name, NORMAL_PREFIX[i].name) == 0)
-	    return NORMAL_PREFIX[i].prefix;
-
-    for (i = 0; i < ARRAY_SIZE (BOOLEAN_PREFIX); i++)
-	if (strcmp (name, BOOLEAN_PREFIX[i].name) == 0)
-	    return BOOLEAN_PREFIX[i].prefix;
-
-    return "";
-}
+/* "128 bits of thread-id ought to be enough for anybody" */
+#define NOTMUCH_THREAD_ID_BITS	 128
+#define NOTMUCH_THREAD_ID_DIGITS (NOTMUCH_THREAD_ID_BITS / 4)
+typedef struct _thread_id {
+    char str[NOTMUCH_THREAD_ID_DIGITS + 1];
+} thread_id_t;
 
 /* We end up having to call the destructor explicitly because we had
  * to use "placement new" in order to initialize C++ objects within a
@@ -153,6 +107,50 @@ _notmuch_message_create (const void *talloc_owner,
     return message;
 }
 
+/* Create a new notmuch_message_t object for a specific message ID,
+ * (which may or may not already exist in the databas).
+ *
+ * Here, 'talloc owner' is an optional talloc context to which the new
+ * message will belong. This allows for the caller to not bother
+ * calling notmuch_message_destroy on the message, and no that all
+ * memory will be reclaimed with 'talloc_owner' is free. The caller
+ * still can call notmuch_message_destroy when finished with the
+ * message if desired.
+ *
+ * The 'talloc_owner' argument can also be NULL, in which case the
+ * caller *is* responsible for calling notmuch_message_destroy.
+ *
+ * If there is already a document with message ID 'message_id' in the
+ * database, then the returned message can be used to query/modify the
+ * document. Otherwise, a new document will be inserted into the
+ * database before this function returns;
+ */
+notmuch_message_t *
+_notmuch_message_create_for_message_id (const void *talloc_owner,
+					notmuch_database_t *notmuch,
+					const char *message_id)
+{
+    notmuch_message_t *message;
+    Xapian::Document doc;
+    unsigned int doc_id;
+    char *term;
+
+    message = notmuch_database_find_message (notmuch, message_id);
+    if (message)
+	return talloc_steal (talloc_owner, message);
+
+    term = talloc_asprintf (NULL, "%s%s",
+			    _find_prefix ("msgid"), message_id);
+    doc.add_term (term);
+    talloc_free (term);
+
+    doc.add_value (NOTMUCH_VALUE_MESSAGE_ID, message_id);
+
+    doc_id = notmuch->xapian_db->add_document (doc);
+
+    return _notmuch_message_create (talloc_owner, notmuch, doc_id);
+}
+
 const char *
 notmuch_message_get_message_id (notmuch_message_t *message)
 {
@@ -164,10 +162,11 @@ notmuch_message_get_message_id (notmuch_message_t *message)
     i = message->doc.termlist_begin ();
     i.skip_to (_find_prefix ("msgid"));
 
-    /* XXX: This should really be an internal error, but we'll need to
-     * fix the add_message side of things first. */
-    if (i == message->doc.termlist_end ())
-	return NULL;
+    if (i == message->doc.termlist_end ()) {
+	fprintf (stderr, "Internal error: Message with document ID of %d has no message ID.\n",
+		 message->doc_id);
+	exit (1);
+    }
 
     message->message_id = talloc_strdup (message, (*i).c_str () + 1);
     return message->message_id;
@@ -470,7 +469,7 @@ notmuch_tags_has_more (notmuch_tags_t *tags)
 	return FALSE;
 
     s = *tags->iterator;
-    if (s.size () && s[0] == 'L')
+    if (! s.empty () && s[0] == 'L')
 	return TRUE;
     else
 	return FALSE;