Implement notmuch_tags_t on top of new notmuch_terms_t

[notmuch] / message.cc

diff --git a/message.cc b/message.cc
index 21befc20ab0299936b78d374f1cdcd89209bccb6..65da4b878fa65d03efd07b732e04eec5d17ee708 100644 (file)
--- a/message.cc
+++ b/message.cc
@@ -31,9 +31,14 @@ struct _notmuch_message {
     Xapian::Document doc;
 };
 
-struct _notmuch_tags {
+typedef struct _notmuch_terms {
+    char prefix_char;
     Xapian::TermIterator iterator;
     Xapian::TermIterator iterator_end;
+} notmuch_terms_t;
+
+struct _notmuch_tags {
+    notmuch_terms_t terms;
 };
 
 struct _notmuch_thread_ids {
@@ -140,7 +145,7 @@ _notmuch_message_create_for_message_id (const void *talloc_owner,
        return talloc_steal (talloc_owner, message);
 
     term = talloc_asprintf (NULL, "%s%s",
-                           _find_prefix ("msgid"), message_id);
+                           _find_prefix ("id"), message_id);
     doc.add_term (term);
     talloc_free (term);
 
@@ -160,7 +165,7 @@ notmuch_message_get_message_id (notmuch_message_t *message)
        return message->message_id;
 
     i = message->doc.termlist_begin ();
-    i.skip_to (_find_prefix ("msgid"));
+    i.skip_to (_find_prefix ("id"));
 
     if (i == message->doc.termlist_end ()) {
        fprintf (stderr, "Internal error: Message with document ID of %d has no message ID.\n",
@@ -212,33 +217,53 @@ notmuch_message_get_filename (notmuch_message_t *message)
  * talloc_set_destructor at all otherwise).
  */
 static int
-_notmuch_tags_destructor (notmuch_tags_t *tags)
+_notmuch_terms_destructor (notmuch_terms_t *terms)
 {
-    tags->iterator.~TermIterator ();
-    tags->iterator_end.~TermIterator ();
+    terms->iterator.~TermIterator ();
+    terms->iterator_end.~TermIterator ();
 
     return 0;
 }
 
-notmuch_tags_t *
-notmuch_message_get_tags (notmuch_message_t *message)
+notmuch_terms_t *
+_notmuch_terms_create (void *ctx,
+                      Xapian::Document doc,
+                      const char *prefix_name)
 {
-    notmuch_tags_t *tags;
+    notmuch_terms_t *terms;
+    const char *prefix = _find_prefix (prefix_name);
+
+    /* Currently, notmuch_terms_t is written with the assumption that
+     * any prefix its derivatives use will be only a single
+     * character. */
+    assert (strlen (prefix) == 1);
 
-    tags = talloc (message, notmuch_tags_t);
-    if (unlikely (tags == NULL))
+    terms = talloc (ctx, notmuch_terms_t);
+    if (unlikely (terms == NULL))
        return NULL;
 
-    new (&tags->iterator) Xapian::TermIterator;
-    new (&tags->iterator_end) Xapian::TermIterator;
+    terms->prefix_char = *prefix;
+    new (&terms->iterator) Xapian::TermIterator;
+    new (&terms->iterator_end) Xapian::TermIterator;
 
-    talloc_set_destructor (tags, _notmuch_tags_destructor);
+    talloc_set_destructor (terms, _notmuch_terms_destructor);
 
-    tags->iterator = message->doc.termlist_begin ();
-    tags->iterator.skip_to (_find_prefix ("tag"));
-    tags->iterator_end = message->doc.termlist_end ();
+    terms->iterator = doc.termlist_begin ();
+    terms->iterator.skip_to (prefix);
+    terms->iterator_end = doc.termlist_end ();
 
-    return tags;
+    return terms;
+}
+
+#define _notmuch_terms_create_type(ctx, doc, prefix_name, type) \
+    (COMPILE_TIME_ASSERT(offsetof(type, terms) == 0),          \
+     (type *) _notmuch_terms_create (ctx, doc, prefix_name))
+
+notmuch_tags_t *
+notmuch_message_get_tags (notmuch_message_t *message)
+{
+    return _notmuch_terms_create_type (message, message->doc, "tag",
+                                      notmuch_tags_t);
 }
 
 notmuch_thread_ids_t *
@@ -268,7 +293,7 @@ _notmuch_message_set_date (notmuch_message_t *message,
 
     time_value = notmuch_parse_date (date, NULL);
 
-    message->doc.add_value (NOTMUCH_VALUE_DATE,
+    message->doc.add_value (NOTMUCH_VALUE_TIMESTAMP,
                            Xapian::sortable_serialise (time_value));
 }
 
@@ -461,36 +486,60 @@ notmuch_message_destroy (notmuch_message_t *message)
 }
 
 notmuch_bool_t
-notmuch_tags_has_more (notmuch_tags_t *tags)
+_notmuch_terms_has_more (notmuch_terms_t *terms)
 {
     std::string s;
 
-    if (tags->iterator == tags->iterator_end)
+    if (terms->iterator == terms->iterator_end)
        return FALSE;
 
-    s = *tags->iterator;
-    if (! s.empty () && s[0] == 'L')
+    s = *terms->iterator;
+    if (! s.empty () && s[0] == terms->prefix_char)
        return TRUE;
     else
        return FALSE;
 }
 
+const char *
+_notmuch_terms_get (notmuch_terms_t *terms)
+{
+    return talloc_strdup (terms, (*terms->iterator).c_str () + 1);
+}
+
+void
+_notmuch_terms_advance (notmuch_terms_t *terms)
+{
+    terms->iterator++;
+}
+
+void
+_notmuch_terms_destroy (notmuch_terms_t *terms)
+{
+    talloc_free (terms);
+}
+
+notmuch_bool_t
+notmuch_tags_has_more (notmuch_tags_t *tags)
+{
+    return _notmuch_terms_has_more (&tags->terms);
+}
+
 const char *
 notmuch_tags_get (notmuch_tags_t *tags)
 {
-    return talloc_strdup (tags, (*tags->iterator).c_str () + 1);
+    return _notmuch_terms_get (&tags->terms);
 }
 
 void
 notmuch_tags_advance (notmuch_tags_t *tags)
 {
-    tags->iterator++;
+    return _notmuch_terms_advance (&tags->terms);
 }
 
 void
 notmuch_tags_destroy (notmuch_tags_t *tags)
 {
-    talloc_free (tags);
+    return _notmuch_terms_destroy (&tags->terms);
 }
 
 notmuch_bool_t