nushell/crates/nu-cli/src/commands/path/mod.rs
2020-07-31 06:51:14 +12:00

76 lines
2.0 KiB
Rust

mod basename;
mod command;
mod exists;
mod expand;
mod extension;
mod r#type;
use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::{ColumnPath, Primitive, ReturnSuccess, ShellTypeName, UntaggedValue, Value};
use nu_source::Span;
use std::path::Path;
pub use basename::PathBasename;
pub use command::Path as PathCommand;
pub use exists::PathExists;
pub use expand::PathExpand;
pub use extension::PathExtension;
pub use r#type::PathType;
#[derive(Deserialize)]
struct DefaultArguments {
rest: Vec<ColumnPath>,
}
fn handle_value<F>(action: &F, v: &Value, span: Span) -> Result<Value, ShellError>
where
F: Fn(&Path) -> UntaggedValue + Send + 'static,
{
let v = match &v.value {
UntaggedValue::Primitive(Primitive::Path(buf)) => action(buf).into_value(v.tag()),
UntaggedValue::Primitive(Primitive::String(s))
| UntaggedValue::Primitive(Primitive::Line(s)) => action(s.as_ref()).into_value(v.tag()),
other => {
let got = format!("got {}", other.type_name());
return Err(ShellError::labeled_error_with_secondary(
"value is not string or path",
got,
span,
"originates from here".to_string(),
v.tag().span,
));
}
};
Ok(v)
}
async fn operate<F>(
input: crate::InputStream,
paths: Vec<ColumnPath>,
action: &'static F,
span: Span,
) -> Result<OutputStream, ShellError>
where
F: Fn(&Path) -> UntaggedValue + Send + Sync + 'static,
{
Ok(input
.map(move |v| {
if paths.is_empty() {
ReturnSuccess::value(handle_value(&action, &v, span)?)
} else {
let mut ret = v;
for path in &paths {
ret = ret.swap_data_by_column_path(
path,
Box::new(move |old| handle_value(&action, &old, span)),
)?;
}
ReturnSuccess::value(ret)
}
})
.to_output_stream())
}