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use std::path::Path;
use nu_engine::CallExt;
use nu_protocol::{engine::Command, Example, ShellError, Signature, Span, SyntaxShape, Value};
use super::PathSubcommandArguments;
struct Arguments {
columns: Option<Vec<String>>,
}
impl PathSubcommandArguments for Arguments {
fn get_columns(&self) -> Option<Vec<String>> {
self.columns.clone()
}
}
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
fn name(&self) -> &str {
"path type"
}
fn signature(&self) -> Signature {
Signature::build("path type").named(
"columns",
SyntaxShape::Table,
"Optionally operate by column path",
Some('c'),
)
}
fn usage(&self) -> &str {
"Get the type of the object a path refers to (e.g., file, dir, symlink)"
}
fn run(
&self,
engine_state: &nu_protocol::engine::EngineState,
stack: &mut nu_protocol::engine::Stack,
call: &nu_protocol::ast::Call,
input: nu_protocol::PipelineData,
) -> Result<nu_protocol::PipelineData, ShellError> {
let head = call.head;
let args = Arguments {
columns: call.get_flag(engine_state, stack, "columns")?,
};
input.map(
move |value| super::operate(&r#type, &args, value, head),
engine_state.ctrlc.clone(),
)
}
fn examples(&self) -> Vec<Example> {
vec![
Example {
description: "Show type of a filepath",
example: "'.' | path type",
result: Some(Value::test_string("dir")),
},
Example {
description: "Show type of a filepath in a column",
example: "ls | path type -c [ name ]",
result: None,
},
]
}
}
fn r#type(path: &Path, span: Span, _: &Arguments) -> Value {
let meta = std::fs::symlink_metadata(path);
Value::string(
match &meta {
Ok(data) => get_file_type(data),
Err(_) => "",
},
span,
)
}
fn get_file_type(md: &std::fs::Metadata) -> &str {
let ft = md.file_type();
let mut file_type = "unknown";
if ft.is_dir() {
file_type = "dir";
} else if ft.is_file() {
file_type = "file";
} else if ft.is_symlink() {
file_type = "symlink";
} else {
#[cfg(unix)]
{
use std::os::unix::fs::FileTypeExt;
if ft.is_block_device() {
file_type = "block device";
} else if ft.is_char_device() {
file_type = "char device";
} else if ft.is_fifo() {
file_type = "pipe";
} else if ft.is_socket() {
file_type = "socket";
}
}
}
file_type
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(SubCommand {})
}
}