use soapysdr_sys::*;
use std::slice;
use std::ffi::CStr;
use std::os::raw::c_char;
#[derive(Copy, Clone, Eq, PartialEq, Debug)]
pub enum ArgType {
Bool,
Float,
Int,
String,
__Nonexhaustive,
}
impl From<SoapySDRArgInfoType> for ArgType {
#[allow(non_upper_case_globals)]
fn from(arg_info_type: SoapySDRArgInfoType) -> Self {
match arg_info_type {
SoapySDRArgInfoType_SOAPY_SDR_ARG_INFO_BOOL => ArgType::Bool,
SoapySDRArgInfoType_SOAPY_SDR_ARG_INFO_FLOAT => ArgType::Float,
SoapySDRArgInfoType_SOAPY_SDR_ARG_INFO_INT => ArgType::Int,
SoapySDRArgInfoType_SOAPY_SDR_ARG_INFO_STRING => ArgType::String,
_ => ArgType::__Nonexhaustive,
}
}
}
pub struct ArgInfo {
pub key: String,
pub value: String,
pub name: Option<String>,
pub description: Option<String>,
pub units: Option<String>,
pub data_type: ArgType,
pub options: Vec<(String, Option<String>)>,
}
unsafe fn required_string(s: *mut c_char) -> String {
assert!(!s.is_null(), "Null string from SoapySDR");
CStr::from_ptr(s).to_string_lossy().into()
}
unsafe fn optional_string(s: *mut c_char) -> Option<String> {
if !s.is_null() {
Some(CStr::from_ptr(s).to_string_lossy().into())
} else {
None
}
}
pub unsafe fn arg_info_from_c(c: &SoapySDRArgInfo) -> ArgInfo {
ArgInfo {
key: required_string(c.key),
value: required_string(c.value),
name: optional_string(c.name),
description: optional_string(c.description),
units: optional_string(c.units),
data_type: c.type_.into(),
options: {
let option_vals = slice::from_raw_parts(c.options, c.numOptions);
let option_names = slice::from_raw_parts(c.optionNames, c.numOptions);
option_vals.iter().zip(option_names.iter()).map(|(&name, &val)| {
(required_string(name), optional_string(val))
}).collect()
}
}
}