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82 lines
2.1 KiB
Rust
82 lines
2.1 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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use deno_core::anyhow::Context;
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use deno_core::error::AnyError;
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pub use deno_core::normalize_path;
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use std::env::current_dir;
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use std::io::Error;
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use std::path::{Path, PathBuf};
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/// Similar to `std::fs::canonicalize()` but strips UNC prefixes on Windows.
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pub fn canonicalize_path(path: &Path) -> Result<PathBuf, Error> {
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let mut canonicalized_path = path.canonicalize()?;
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if cfg!(windows) {
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canonicalized_path = PathBuf::from(
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canonicalized_path
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.display()
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.to_string()
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.trim_start_matches("\\\\?\\"),
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);
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}
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Ok(canonicalized_path)
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}
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pub fn resolve_from_cwd(path: &Path) -> Result<PathBuf, AnyError> {
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let resolved_path = if path.is_absolute() {
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path.to_owned()
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} else {
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let cwd =
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current_dir().context("Failed to get current working directory")?;
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cwd.join(path)
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};
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Ok(normalize_path(&resolved_path))
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn resolve_from_cwd_child() {
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let cwd = current_dir().unwrap();
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assert_eq!(resolve_from_cwd(Path::new("a")).unwrap(), cwd.join("a"));
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}
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#[test]
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fn resolve_from_cwd_dot() {
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let cwd = current_dir().unwrap();
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assert_eq!(resolve_from_cwd(Path::new(".")).unwrap(), cwd);
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}
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#[test]
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fn resolve_from_cwd_parent() {
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let cwd = current_dir().unwrap();
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assert_eq!(resolve_from_cwd(Path::new("a/..")).unwrap(), cwd);
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}
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#[test]
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fn test_normalize_path() {
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assert_eq!(normalize_path(Path::new("a/../b")), PathBuf::from("b"));
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assert_eq!(normalize_path(Path::new("a/./b/")), PathBuf::from("a/b/"));
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assert_eq!(
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normalize_path(Path::new("a/./b/../c")),
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PathBuf::from("a/c")
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);
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if cfg!(windows) {
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assert_eq!(
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normalize_path(Path::new("C:\\a\\.\\b\\..\\c")),
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PathBuf::from("C:\\a\\c")
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);
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}
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}
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// TODO: Get a good expected value here for Windows.
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#[cfg(not(windows))]
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#[test]
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fn resolve_from_cwd_absolute() {
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let expected = Path::new("/a");
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assert_eq!(resolve_from_cwd(expected).unwrap(), expected);
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}
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}
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