LibTimeZone: Parse ZONE entries from the TZDB and generate their names

4 files changed, 57 insertions, 0 deletions

diff --git a/Userland/Libraries/LibTimeZone/CMakeLists.txt b/Userland/Libraries/LibTimeZone/CMakeLists.txt
index 2053b93ef3..834a19747f 100644
--- a/Userland/Libraries/LibTimeZone/CMakeLists.txt
+++ b/Userland/Libraries/LibTimeZone/CMakeLists.txt
@@ -6,3 +6,15 @@ if (DEFINED TIME_ZONE_DATA_SOURCES)
     target_compile_options(LibTimeZoneData PRIVATE -g0 -Os)
     target_link_libraries(LibTimeZoneData LibCore)
 endif()
+
+set(SOURCES
+    TimeZone.cpp
+)
+
+serenity_lib(LibTimeZone timezone)
+target_link_libraries(LibTimeZone LibCore)
+target_compile_definitions(LibTimeZone PRIVATE ENABLE_TIME_ZONE_DATA=$<BOOL:${ENABLE_TIME_ZONE_DATABASE_DOWNLOAD}>)
+
+if (DEFINED TIME_ZONE_DATA_SOURCES)
+    target_link_libraries(LibTimeZone LibTimeZoneData)
+endif()
diff --git a/Userland/Libraries/LibTimeZone/Forward.h b/Userland/Libraries/LibTimeZone/Forward.h
new file mode 100644
index 0000000000..bc4cd8dc00
--- /dev/null
+++ b/Userland/Libraries/LibTimeZone/Forward.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2022, Tim Flynn <trflynn89@pm.me>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Types.h>
+
+namespace TimeZone {
+
+enum class TimeZone : u16;
+
+}
diff --git a/Userland/Libraries/LibTimeZone/TimeZone.cpp b/Userland/Libraries/LibTimeZone/TimeZone.cpp
new file mode 100644
index 0000000000..479aad1ddf
--- /dev/null
+++ b/Userland/Libraries/LibTimeZone/TimeZone.cpp
@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2022, Tim Flynn <trflynn89@pm.me>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTimeZone/TimeZone.h>
+
+namespace TimeZone {
+
+Optional<TimeZone> __attribute__((weak)) time_zone_from_string(StringView) { return {}; }
+
+}
diff --git a/Userland/Libraries/LibTimeZone/TimeZone.h b/Userland/Libraries/LibTimeZone/TimeZone.h
new file mode 100644
index 0000000000..552755dfee
--- /dev/null
+++ b/Userland/Libraries/LibTimeZone/TimeZone.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2022, Tim Flynn <trflynn89@pm.me>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Optional.h>
+#include <AK/StringView.h>
+#include <LibTimeZone/Forward.h>
+
+namespace TimeZone {
+
+Optional<TimeZone> time_zone_from_string(StringView time_zone);
+
+}