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use crate::cli_params::CliParamsError;
use mddd_traits::IParser;
pub struct CliUtils {}
impl CliUtils {
pub fn proc_cli_err_s<T, P: IParser<T>>(
key: &str,
res: Result<Option<&str>, CliParamsError>,
default: Option<T>,
) -> Result<T, String> {
match (res, default) {
(Ok(Some(val)), _) => {
P::parse(val).map_err(|msg| format!("Invalid field({}): {}", key, msg))
}
(Ok(None), Some(val)) => Ok(val),
(Ok(None), None) => Err(format!("Field not set: {}", key)),
(Err(err), _) => Err(format!("Invalid field({}): {:?}", key, err)),
}
}
pub fn proc_cli_err_m<T, P: IParser<T>>(
key: &str,
res: Result<Vec<&str>, CliParamsError>,
) -> Result<Vec<T>, String> {
let as_str = match res {
Ok(val) => val,
Err(err) => {
let msg = format!("Invalid field({}): {:?}", key, err);
return Err(msg);
}
};
as_str
.into_iter()
.map(|src: &str| -> Result<T, String> { P::parse(src) })
.collect::<Result<Vec<T>, String>>()
.map_err(|msg| format!("Invalid field({}): {}", key, msg))
}
}