bus: add basic implementation of a native bus client library

[elogind.git] / src / libsystemd-bus / bus-type.c

diff --git a/src/libsystemd-bus/bus-type.c b/src/libsystemd-bus/bus-type.c
new file mode 100644 (file)
index 0000000..0557328
--- /dev/null
+++ b/src/libsystemd-bus/bus-type.c
@@ -0,0 +1,163 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "util.h"
+#include "bus-type.h"
+
+bool bus_type_is_valid(char c) {
+        static const char valid[] = {
+                SD_BUS_TYPE_BYTE,
+                SD_BUS_TYPE_BOOLEAN,
+                SD_BUS_TYPE_INT16,
+                SD_BUS_TYPE_UINT16,
+                SD_BUS_TYPE_INT32,
+                SD_BUS_TYPE_UINT32,
+                SD_BUS_TYPE_INT64,
+                SD_BUS_TYPE_UINT64,
+                SD_BUS_TYPE_DOUBLE,
+                SD_BUS_TYPE_STRING,
+                SD_BUS_TYPE_OBJECT_PATH,
+                SD_BUS_TYPE_SIGNATURE,
+                SD_BUS_TYPE_ARRAY,
+                SD_BUS_TYPE_VARIANT,
+                SD_BUS_TYPE_STRUCT,
+                SD_BUS_TYPE_DICT_ENTRY,
+                SD_BUS_TYPE_UNIX_FD
+        };
+
+        return !!memchr(valid, c, sizeof(valid));
+}
+
+bool bus_type_is_valid_in_signature(char c) {
+        static const char valid[] = {
+                SD_BUS_TYPE_BYTE,
+                SD_BUS_TYPE_BOOLEAN,
+                SD_BUS_TYPE_INT16,
+                SD_BUS_TYPE_UINT16,
+                SD_BUS_TYPE_INT32,
+                SD_BUS_TYPE_UINT32,
+                SD_BUS_TYPE_INT64,
+                SD_BUS_TYPE_UINT64,
+                SD_BUS_TYPE_DOUBLE,
+                SD_BUS_TYPE_STRING,
+                SD_BUS_TYPE_OBJECT_PATH,
+                SD_BUS_TYPE_SIGNATURE,
+                SD_BUS_TYPE_ARRAY,
+                SD_BUS_TYPE_VARIANT,
+                SD_BUS_TYPE_STRUCT_BEGIN,
+                SD_BUS_TYPE_STRUCT_END,
+                SD_BUS_TYPE_DICT_ENTRY_BEGIN,
+                SD_BUS_TYPE_DICT_ENTRY_END,
+                SD_BUS_TYPE_UNIX_FD
+        };
+
+        return !!memchr(valid, c, sizeof(valid));
+}
+
+bool bus_type_is_basic(char c) {
+        static const char valid[] = {
+                SD_BUS_TYPE_BYTE,
+                SD_BUS_TYPE_BOOLEAN,
+                SD_BUS_TYPE_INT16,
+                SD_BUS_TYPE_UINT16,
+                SD_BUS_TYPE_INT32,
+                SD_BUS_TYPE_UINT32,
+                SD_BUS_TYPE_INT64,
+                SD_BUS_TYPE_UINT64,
+                SD_BUS_TYPE_DOUBLE,
+                SD_BUS_TYPE_STRING,
+                SD_BUS_TYPE_OBJECT_PATH,
+                SD_BUS_TYPE_SIGNATURE,
+                SD_BUS_TYPE_UNIX_FD
+        };
+
+        return !!memchr(valid, c, sizeof(valid));
+}
+
+bool bus_type_is_container(char c) {
+        static const char valid[] = {
+                SD_BUS_TYPE_ARRAY,
+                SD_BUS_TYPE_VARIANT,
+                SD_BUS_TYPE_STRUCT,
+                SD_BUS_TYPE_DICT_ENTRY
+        };
+
+        return !!memchr(valid, c, sizeof(valid));
+}
+
+int bus_type_get_alignment(char c) {
+
+        switch (c) {
+        case SD_BUS_TYPE_BYTE:
+        case SD_BUS_TYPE_SIGNATURE:
+        case SD_BUS_TYPE_VARIANT:
+                return 1;
+
+        case SD_BUS_TYPE_INT16:
+        case SD_BUS_TYPE_UINT16:
+                return 2;
+
+        case SD_BUS_TYPE_BOOLEAN:
+        case SD_BUS_TYPE_INT32:
+        case SD_BUS_TYPE_UINT32:
+        case SD_BUS_TYPE_STRING:
+        case SD_BUS_TYPE_OBJECT_PATH:
+        case SD_BUS_TYPE_ARRAY:
+        case SD_BUS_TYPE_UNIX_FD:
+                return 4;
+
+        case SD_BUS_TYPE_INT64:
+        case SD_BUS_TYPE_UINT64:
+        case SD_BUS_TYPE_DOUBLE:
+        case SD_BUS_TYPE_STRUCT:
+        case SD_BUS_TYPE_STRUCT_BEGIN:
+        case SD_BUS_TYPE_DICT_ENTRY:
+        case SD_BUS_TYPE_DICT_ENTRY_BEGIN:
+                return 8;
+        }
+
+        return -EINVAL;
+}
+
+int bus_type_get_size(char c) {
+
+        switch (c) {
+        case SD_BUS_TYPE_BYTE:
+                return 1;
+
+        case SD_BUS_TYPE_INT16:
+        case SD_BUS_TYPE_UINT16:
+                return 2;
+
+        case SD_BUS_TYPE_BOOLEAN:
+        case SD_BUS_TYPE_INT32:
+        case SD_BUS_TYPE_UINT32:
+        case SD_BUS_TYPE_UNIX_FD:
+                return 4;
+
+        case SD_BUS_TYPE_INT64:
+        case SD_BUS_TYPE_UINT64:
+        case SD_BUS_TYPE_DOUBLE:
+                return 8;
+        }
+
+        return -EINVAL;
+}