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use std::ffi::CStr;
use crate::{
data::ObsDataPointers,
run_with_obs,
unsafe_send::SmartPointerSendable,
utils::{ObsError, ObsString},
};
/// # Safety
/// This function must be called on the OBS runtime.
#[allow(unknown_lints)]
#[allow(ensure_obs_call_in_runtime)]
unsafe fn has_value(
data_ptr: SmartPointerSendable<*mut libobs::obs_data_t>,
key: &ObsString,
) -> bool {
libobs::obs_data_has_user_value(data_ptr.get_ptr(), key.as_ptr().0)
|| libobs::obs_data_has_default_value(data_ptr.get_ptr(), key.as_ptr().0)
}
pub trait ObsDataGetters: ObsDataPointers {
fn get_string<T: Into<ObsString> + Send + Sync>(
&self,
key: T,
) -> Result<Option<String>, ObsError> {
let key = key.into();
let data_ptr = self.as_ptr();
run_with_obs!(self.runtime(), (data_ptr, key), move || {
let has_value = unsafe {
// Safety: We are running on the OBS runtime.
has_value(data_ptr.clone(), &key)
};
if has_value {
let result = unsafe {
// Safety: The pointer is valid because we are using a smart pointer
libobs::obs_data_get_string(data_ptr.get_ptr(), key.as_ptr().0)
};
if result.is_null() {
Err(ObsError::NullPointer(None))
} else {
let result = unsafe {
// Safety: The pointer is valid because OBS returned it and we are still in runtime.
CStr::from_ptr(result)
};
let result = result
.to_str()
.map_err(|_| ObsError::StringConversionError)?
.to_string();
Ok(Some(result))
}
} else {
Ok(None)
}
})?
}
fn get_int<T: Into<ObsString> + Sync + Send>(&self, key: T) -> Result<Option<i64>, ObsError> {
let key = key.into();
let data_ptr = self.as_ptr();
run_with_obs!(self.runtime(), (data_ptr, key), move || {
let has_value = unsafe {
// Safety: We are running on the OBS runtime.
has_value(data_ptr.clone(), &key)
};
if has_value {
Some(unsafe {
// Safety: The pointer is valid because we are using a smart pointer
libobs::obs_data_get_int(data_ptr.get_ptr(), key.as_ptr().0)
})
} else {
None
}
})
}
fn get_bool<T: Into<ObsString> + Sync + Send>(&self, key: T) -> Result<Option<bool>, ObsError> {
let key = key.into();
let data_ptr = self.as_ptr();
run_with_obs!(self.runtime(), (data_ptr, key), move || {
let has_value = unsafe {
// Safety: We are running on the OBS runtime.
has_value(data_ptr.clone(), &key)
};
if has_value {
Some(unsafe {
// Safety: The pointer is valid because we are using a smart pointer
libobs::obs_data_get_bool(data_ptr.get_ptr(), key.as_ptr().0)
})
} else {
None
}
})
}
fn get_double<T: Into<ObsString> + Sync + Send>(
&self,
key: T,
) -> Result<Option<f64>, ObsError> {
let key = key.into();
let data_ptr = self.as_ptr();
let result = run_with_obs!(self.runtime(), (key, data_ptr), move || {
let has_value = unsafe {
// Safety: We are running on the OBS runtime.
has_value(data_ptr.clone(), &key)
};
if has_value {
Some(unsafe {
// Safety: The pointer is valid because we are using a smart pointer
libobs::obs_data_get_double(data_ptr.get_ptr(), key.as_ptr().0)
})
} else {
None
}
})?;
Ok(result)
}
fn get_json(&self) -> Result<String, ObsError> {
let data_ptr = self.as_ptr();
run_with_obs!(self.runtime(), (data_ptr), move || {
let json_ptr = unsafe {
// Safety: The pointer is valid because we are using a smart pointer
libobs::obs_data_get_json(data_ptr.get_ptr())
};
if json_ptr.is_null() {
return Err(ObsError::NullPointer(Some(
"Couldn't get json representation of OBS data".into(),
)));
}
let json = unsafe {
// Safety: The pointer is valid because OBS returned it and we are still in runtime.
CStr::from_ptr(json_ptr)
}
.to_str()
.map_err(|_| ObsError::JsonParseError)?
.to_string();
Ok(json)
})?
}
}