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ohos-sys

FFI-bindings for the native API of OpenHarmony OS. See the documentation for a list of supported components. This crate is under active development, and not officially affiliated with OpenHarmony OS.

Status of the bindings

Here is an overview of the available C header directories in the OpenHarmony sysroot, and for which of them this crate already provides bindings. The API-level column denotes up to which api level the bindings have already been generated.

API name status API-level
AbilityKit
BasicServicesKit
ConnectivityKit
CryptoArchitectureKit
IPCKit
LocationKit
NotificationKit
accesstoken
ace/xcomponent 13
ark_runtime
arkui 13
asset
bundle
database
ddk
ffrt
filemanagement
hiappevent
hicollie
hid
hidebug
hilog 13
hitrace 13
huks
info
inputmethod 13
mindspore
multimedia
multimodalinput
napi 13
native_buffer 13
native_color_space_manager
native_display_soloist
native_drawing 13
native_effect
native_image 13
native_vsync 13
native_window 13
network
neural_network_runtime
ohaudio
ohcamera
purgeable_memory
qos
rawfile 13
resourcemanager
sensors
telephony
transient_task
usb
web
window_manager

Development

The current bindings are generated with bindgen using scripts/generate_bindings.sh. Bindings are currently generated with the OpenHarmony SDK API level 13, but with items added after API level 10 feature guarded behind api-XX features. this is handled automatically by the tool based on the documentation comments in the C header files.

Contributing

There are still quite a few OpenHarmony APIs missing. Feel free to contribute missing APIs, but be sure to adapt the script, so your bindings are reproducible! The OpenHarmony SDK can be downloaded from the release notes of the respective release, e.g. the 5.0.0 release notes. Navigate to the Acquiring Source Code from Mirrors section, select the Public SDK package for the standard system for your host Operating System (Windows / Linux / Mac) click download and optionally verify the SHA-256 checksum of the downloaded archive. Extract the archive to a suitable location. Please note that the <os_name> subfolder contains more archives. For the purpose of generating the bindings extracting the native archive is sufficient.

Once you have setup your local SDK, you should set the environment variable OHOS_SDK_NATIVE to /path/to/ohos-sdk/<your_host_os>/native. Afterwards you can run the script to generate the bindings and adapt it to incorporate new modules.

Please also check the following:

  • Preferably generate the bindings with libclang in C mode. However, if a header file is not C-compliant due to an issue of the OpenHarmony SDK, then setting libclang to C++ mode is fine.
  • Be sure to guard the new component behind a cargo feature and document the feature in Cargo.toml.

License

This crate is licensed under the Apache-2.0 license, matching the OpenHarmony OS SDK.