112 lines
2.8 KiB
Rust
112 lines
2.8 KiB
Rust
//! Converting between Windows GUIDs and UUIDs.
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//!
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//! Windows GUIDs are specified as using mixed endianness.
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//! What you get will depend on the source of the GUID.
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//! Functions like `CoCreateGuid` will generate a valid UUID so
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//! the fields will be naturally ordered for `Uuid::from_fields`.
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//! Other GUIDs might need to be passed to `Uuid::from_fields_le`
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//! to have their ordering swapped.
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#[test]
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#[cfg(windows)]
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fn guid_to_uuid() {
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use uuid::Uuid;
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use windows_sys::core;
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let guid_in = core::GUID {
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data1: 0x4a35229d,
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data2: 0x5527,
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data3: 0x4f30,
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data4: [0x86, 0x47, 0x9d, 0xc5, 0x4e, 0x1e, 0xe1, 0xe8],
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};
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let uuid = Uuid::from_fields(guid_in.data1, guid_in.data2, guid_in.data3, &guid_in.data4);
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let guid_out = {
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let fields = uuid.as_fields();
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core::GUID {
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data1: fields.0,
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data2: fields.1,
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data3: fields.2,
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data4: *fields.3,
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}
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};
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assert_eq!(
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(guid_in.data1, guid_in.data2, guid_in.data3, guid_in.data4),
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(
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guid_out.data1,
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guid_out.data2,
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guid_out.data3,
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guid_out.data4
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)
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);
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}
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#[test]
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#[cfg(windows)]
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fn guid_to_uuid_le_encoded() {
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use uuid::Uuid;
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use windows_sys::core;
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// A GUID might not be encoded directly as a UUID
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// If its fields are stored in little-endian order they might
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// need to be flipped. Whether or not this is necessary depends
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// on the source of the GUID
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let guid_in = core::GUID {
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data1: 0x9d22354a,
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data2: 0x2755,
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data3: 0x304f,
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data4: [0x86, 0x47, 0x9d, 0xc5, 0x4e, 0x1e, 0xe1, 0xe8],
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};
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let uuid = Uuid::from_fields_le(guid_in.data1, guid_in.data2, guid_in.data3, &guid_in.data4);
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let guid_out = {
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let fields = uuid.to_fields_le();
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core::GUID {
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data1: fields.0,
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data2: fields.1,
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data3: fields.2,
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data4: *fields.3,
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}
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};
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assert_eq!(
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(guid_in.data1, guid_in.data2, guid_in.data3, guid_in.data4),
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(
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guid_out.data1,
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guid_out.data2,
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guid_out.data3,
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guid_out.data4
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)
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);
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}
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#[test]
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#[cfg(windows)]
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fn uuid_from_cocreateguid() {
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use uuid::{Uuid, Variant, Version};
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use windows_sys::core;
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use windows_sys::Win32::System::Com::CoCreateGuid;
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let mut guid = core::GUID {
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data1: 0,
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data2: 0,
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data3: 0,
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data4: [0u8; 8],
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};
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unsafe {
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CoCreateGuid(&mut guid);
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}
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let uuid = Uuid::from_fields(guid.data1, guid.data2, guid.data3, &guid.data4);
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assert_eq!(Variant::RFC4122, uuid.get_variant());
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assert_eq!(Some(Version::Random), uuid.get_version());
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}
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fn main() {}
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