forked from extern/nushell
3075e2cfbf
It was too error prone when positional arguments were used with the rest arguments. Now, you need to explicitly state from which position you want to count the rest args (e.g., `rest(0)`).
86 lines
2.4 KiB
Rust
86 lines
2.4 KiB
Rust
use super::{operate, PathSubcommandArguments};
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use crate::prelude::*;
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use nu_engine::WholeStreamCommand;
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use nu_errors::ShellError;
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use nu_protocol::{ColumnPath, Signature, SyntaxShape, UntaggedValue, Value};
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use std::path::{Path, PathBuf};
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pub struct PathExpand;
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struct PathExpandArguments {
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rest: Vec<ColumnPath>,
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}
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impl PathSubcommandArguments for PathExpandArguments {
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fn get_column_paths(&self) -> &Vec<ColumnPath> {
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&self.rest
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}
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}
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impl WholeStreamCommand for PathExpand {
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fn name(&self) -> &str {
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"path expand"
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}
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fn signature(&self) -> Signature {
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Signature::build("path expand")
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.rest(SyntaxShape::ColumnPath, "Optionally operate by column path")
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}
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fn usage(&self) -> &str {
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"Expand a path to its absolute form"
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}
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fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
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let tag = args.call_info.name_tag.clone();
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let args = args.evaluate_once()?;
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let cmd_args = Arc::new(PathExpandArguments {
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rest: args.rest(0)?,
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});
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Ok(operate(args.input, &action, tag.span, cmd_args))
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}
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#[cfg(windows)]
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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description: "Expand relative directories",
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example: "echo 'C:\\Users\\joe\\foo\\..\\bar' | path expand",
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result: None,
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// fails to canonicalize into Some(vec![Value::from("C:\\Users\\joe\\bar")]) due to non-existing path
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}]
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}
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#[cfg(not(windows))]
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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description: "Expand relative directories",
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example: "echo '/home/joe/foo/../bar' | path expand",
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result: None,
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// fails to canonicalize into Some(vec![Value::from("/home/joe/bar")]) due to non-existing path
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}]
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}
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}
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fn action(path: &Path, tag: Tag, _args: &PathExpandArguments) -> Value {
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let ps = path.to_string_lossy();
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let expanded = shellexpand::tilde(&ps);
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let path: &Path = expanded.as_ref().as_ref();
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UntaggedValue::filepath(dunce::canonicalize(path).unwrap_or_else(|_| PathBuf::from(path)))
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.into_value(tag)
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}
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#[cfg(test)]
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mod tests {
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use super::PathExpand;
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use super::ShellError;
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#[test]
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fn examples_work_as_expected() -> Result<(), ShellError> {
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use crate::examples::test as test_examples;
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test_examples(PathExpand {})
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}
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}
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