lib: support user prefix names in term generation

[notmuch] / lib / database.cc

diff --git a/lib/database.cc b/lib/database.cc
index 1753117f99361b8f1fe25cacd1152dc25694e446..b3fe6373e645e2c68147f8f90347645e3c0bb81b 100644 (file)
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -322,6 +322,58 @@ _setup_query_field_default (const prefix_t *prefix, notmuch_database_t *notmuch)
        notmuch->query_parser->add_boolean_prefix (prefix->name, prefix->prefix);
 }
 
+const char *
+_user_prefix (void *ctx, const char* name)
+{
+    return talloc_asprintf(ctx, "XU%s:", name);
+}
+
+static notmuch_status_t
+_setup_user_query_fields (notmuch_database_t *notmuch)
+{
+    notmuch_config_list_t *list;
+    notmuch_status_t status;
+
+    notmuch->user_prefix = _notmuch_string_map_create (notmuch);
+    if (notmuch->user_prefix == NULL)
+       return NOTMUCH_STATUS_OUT_OF_MEMORY;
+
+    notmuch->user_header = _notmuch_string_map_create (notmuch);
+    if (notmuch->user_header == NULL)
+       return NOTMUCH_STATUS_OUT_OF_MEMORY;
+
+    status = notmuch_database_get_config_list (notmuch, CONFIG_HEADER_PREFIX, &list);
+    if (status)
+       return status;
+
+    for (; notmuch_config_list_valid (list); notmuch_config_list_move_to_next (list)) {
+
+       prefix_t query_field;
+
+       const char *key = notmuch_config_list_key (list)
+           + sizeof (CONFIG_HEADER_PREFIX) - 1;
+
+       _notmuch_string_map_append (notmuch->user_prefix,
+                                   key,
+                                   _user_prefix (notmuch, key));
+
+       _notmuch_string_map_append (notmuch->user_header,
+                                   key,
+                                   notmuch_config_list_value (list));
+
+       query_field.name = talloc_strdup (notmuch, key);
+       query_field.prefix = _user_prefix (notmuch, key);
+       query_field.flags = NOTMUCH_FIELD_PROBABILISTIC
+           | NOTMUCH_FIELD_EXTERNAL;
+
+       _setup_query_field_default (&query_field, notmuch);
+    }
+
+    notmuch_config_list_destroy (list);
+
+    return NOTMUCH_STATUS_SUCCESS;
+}
+
 #if HAVE_XAPIAN_FIELD_PROCESSOR
 static void
 _setup_query_field (const prefix_t *prefix, notmuch_database_t *notmuch)
@@ -370,6 +422,26 @@ _find_prefix (const char *name)
     return "";
 }
 
+/* Like find prefix, but include the possibility of user defined
+ * prefixes specific to this database */
+
+const char *
+_notmuch_database_prefix (notmuch_database_t *notmuch, const char *name)
+{
+    unsigned int i;
+
+    /*XXX TODO: reduce code duplication */
+    for (i = 0; i < ARRAY_SIZE (prefix_table); i++) {
+       if (strcmp (name, prefix_table[i].name) == 0)
+           return prefix_table[i].prefix;
+    }
+
+    if (notmuch->user_prefix)
+       return _notmuch_string_map_get (notmuch->user_prefix, name);
+
+    return NULL;
+}
+
 static const struct {
     /* NOTMUCH_FEATURE_* value. */
     _notmuch_features value;
@@ -986,6 +1058,7 @@ notmuch_database_open_verbose (const char *path,
                _setup_query_field (prefix, notmuch);
            }
        }
+       status = _setup_user_query_fields (notmuch);
     } catch (const Xapian::Error &error) {
        IGNORE_RESULT (asprintf (&message, "A Xapian exception occurred opening database: %s\n",
                                 error.get_msg().c_str()));