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