mirror of
https://github.com/denoland/deno.git
synced 2024-11-28 16:20:57 -05:00
661 lines
19 KiB
Rust
661 lines
19 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 deno_core::ModuleSpecifier;
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use deno_runtime::deno_crypto::rand;
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use deno_runtime::deno_node::PathClean;
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use std::env::current_dir;
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use std::fs::OpenOptions;
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use std::io::Error;
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use std::io::ErrorKind;
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use std::io::Write;
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use std::path::Path;
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use std::path::PathBuf;
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use std::time::Duration;
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use walkdir::WalkDir;
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use super::path::specifier_to_file_path;
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pub fn atomic_write_file<T: AsRef<[u8]>>(
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filename: &Path,
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data: T,
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mode: u32,
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) -> std::io::Result<()> {
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let rand: String = (0..4)
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.map(|_| format!("{:02x}", rand::random::<u8>()))
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.collect();
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let extension = format!("{}.tmp", rand);
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let tmp_file = filename.with_extension(extension);
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write_file(&tmp_file, data, mode)?;
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std::fs::rename(tmp_file, filename)?;
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Ok(())
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}
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pub fn write_file<T: AsRef<[u8]>>(
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filename: &Path,
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data: T,
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mode: u32,
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) -> std::io::Result<()> {
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write_file_2(filename, data, true, mode, true, false)
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}
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pub fn write_file_2<T: AsRef<[u8]>>(
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filename: &Path,
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data: T,
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update_mode: bool,
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mode: u32,
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is_create: bool,
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is_append: bool,
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) -> std::io::Result<()> {
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let mut file = OpenOptions::new()
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.read(false)
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.write(true)
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.append(is_append)
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.truncate(!is_append)
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.create(is_create)
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.open(filename)?;
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if update_mode {
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#[cfg(unix)]
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{
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use std::os::unix::fs::PermissionsExt;
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let mode = mode & 0o777;
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let permissions = PermissionsExt::from_mode(mode);
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file.set_permissions(permissions)?;
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}
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#[cfg(not(unix))]
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let _ = mode;
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}
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file.write_all(data.as_ref())
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}
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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 path = path.canonicalize()?;
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#[cfg(windows)]
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return Ok(strip_unc_prefix(path));
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#[cfg(not(windows))]
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return Ok(path);
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}
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/// Canonicalizes a path which might be non-existent by going up the
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/// ancestors until it finds a directory that exists, canonicalizes
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/// that path, then adds back the remaining path components.
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///
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/// Note: When using this, you should be aware that a symlink may
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/// subsequently be created along this path by some other code.
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pub fn canonicalize_path_maybe_not_exists(
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path: &Path,
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) -> Result<PathBuf, Error> {
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let path = path.to_path_buf().clean();
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let mut path = path.as_path();
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let mut names_stack = Vec::new();
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loop {
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match canonicalize_path(path) {
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Ok(mut canonicalized_path) => {
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for name in names_stack.into_iter().rev() {
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canonicalized_path = canonicalized_path.join(name);
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}
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return Ok(canonicalized_path);
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}
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Err(err) if err.kind() == ErrorKind::NotFound => {
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names_stack.push(path.file_name().unwrap());
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path = path.parent().unwrap();
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}
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Err(err) => return Err(err),
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}
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}
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}
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#[cfg(windows)]
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fn strip_unc_prefix(path: PathBuf) -> PathBuf {
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use std::path::Component;
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use std::path::Prefix;
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let mut components = path.components();
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match components.next() {
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Some(Component::Prefix(prefix)) => {
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match prefix.kind() {
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// \\?\device
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Prefix::Verbatim(device) => {
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let mut path = PathBuf::new();
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path.push(format!(r"\\{}\", device.to_string_lossy()));
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path.extend(components.filter(|c| !matches!(c, Component::RootDir)));
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path
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}
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// \\?\c:\path
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Prefix::VerbatimDisk(_) => {
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let mut path = PathBuf::new();
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path.push(prefix.as_os_str().to_string_lossy().replace(r"\\?\", ""));
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path.extend(components);
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path
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}
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// \\?\UNC\hostname\share_name\path
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Prefix::VerbatimUNC(hostname, share_name) => {
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let mut path = PathBuf::new();
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path.push(format!(
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r"\\{}\{}\",
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hostname.to_string_lossy(),
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share_name.to_string_lossy()
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));
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path.extend(components.filter(|c| !matches!(c, Component::RootDir)));
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path
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}
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_ => path,
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}
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}
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_ => path,
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}
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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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/// Collects file paths that satisfy the given predicate, by recursively walking `files`.
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/// If the walker visits a path that is listed in `ignore`, it skips descending into the directory.
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pub fn collect_files<P>(
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files: &[PathBuf],
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ignore: &[PathBuf],
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predicate: P,
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) -> Result<Vec<PathBuf>, AnyError>
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where
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P: Fn(&Path) -> bool,
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{
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let mut target_files = Vec::new();
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// retain only the paths which exist and ignore the rest
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let canonicalized_ignore: Vec<PathBuf> = ignore
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.iter()
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.filter_map(|i| canonicalize_path(i).ok())
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.collect();
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for file in files {
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for entry in WalkDir::new(file)
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.into_iter()
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.filter_entry(|e| {
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canonicalize_path(e.path()).map_or(false, |c| {
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!canonicalized_ignore.iter().any(|i| c.starts_with(i))
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})
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})
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.filter_map(|e| match e {
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Ok(e) if !e.file_type().is_dir() && predicate(e.path()) => Some(e),
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_ => None,
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})
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{
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target_files.push(canonicalize_path(entry.path())?)
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}
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}
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Ok(target_files)
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}
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/// Collects module specifiers that satisfy the given predicate as a file path, by recursively walking `include`.
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/// Specifiers that start with http and https are left intact.
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pub fn collect_specifiers<P>(
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include: Vec<String>,
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ignore: &[PathBuf],
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predicate: P,
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) -> Result<Vec<ModuleSpecifier>, AnyError>
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where
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P: Fn(&Path) -> bool,
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{
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let mut prepared = vec![];
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let root_path = current_dir()?;
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for path in include {
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let lowercase_path = path.to_lowercase();
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if lowercase_path.starts_with("http://")
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|| lowercase_path.starts_with("https://")
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{
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let url = ModuleSpecifier::parse(&path)?;
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prepared.push(url);
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continue;
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}
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let p = if lowercase_path.starts_with("file://") {
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specifier_to_file_path(&ModuleSpecifier::parse(&path)?)?
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} else {
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root_path.join(path)
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};
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let p = normalize_path(&p);
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if p.is_dir() {
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let test_files = collect_files(&[p], ignore, &predicate).unwrap();
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let mut test_files_as_urls = test_files
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.iter()
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.map(|f| ModuleSpecifier::from_file_path(f).unwrap())
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.collect::<Vec<ModuleSpecifier>>();
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test_files_as_urls.sort();
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prepared.extend(test_files_as_urls);
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} else {
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let url = ModuleSpecifier::from_file_path(p).unwrap();
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prepared.push(url);
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}
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}
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Ok(prepared)
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}
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/// Asynchronously removes a directory and all its descendants, but does not error
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/// when the directory does not exist.
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pub async fn remove_dir_all_if_exists(path: &Path) -> std::io::Result<()> {
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let result = tokio::fs::remove_dir_all(path).await;
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match result {
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Err(err) if err.kind() == std::io::ErrorKind::NotFound => Ok(()),
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_ => result,
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}
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}
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/// Copies a directory to another directory.
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///
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/// Note: Does not handle symlinks.
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pub fn copy_dir_recursive(from: &Path, to: &Path) -> Result<(), AnyError> {
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std::fs::create_dir_all(to)
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.with_context(|| format!("Creating {}", to.display()))?;
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let read_dir = std::fs::read_dir(from)
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.with_context(|| format!("Reading {}", from.display()))?;
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for entry in read_dir {
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let entry = entry?;
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let file_type = entry.file_type()?;
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let new_from = from.join(entry.file_name());
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let new_to = to.join(entry.file_name());
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if file_type.is_dir() {
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copy_dir_recursive(&new_from, &new_to).with_context(|| {
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format!("Dir {} to {}", new_from.display(), new_to.display())
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})?;
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} else if file_type.is_file() {
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std::fs::copy(&new_from, &new_to).with_context(|| {
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format!("Copying {} to {}", new_from.display(), new_to.display())
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})?;
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}
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}
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Ok(())
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}
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/// Hardlinks the files in one directory to another directory.
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///
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/// Note: Does not handle symlinks.
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pub fn hard_link_dir_recursive(from: &Path, to: &Path) -> Result<(), AnyError> {
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std::fs::create_dir_all(to)
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.with_context(|| format!("Creating {}", to.display()))?;
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let read_dir = std::fs::read_dir(from)
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.with_context(|| format!("Reading {}", from.display()))?;
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for entry in read_dir {
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let entry = entry?;
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let file_type = entry.file_type()?;
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let new_from = from.join(entry.file_name());
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let new_to = to.join(entry.file_name());
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if file_type.is_dir() {
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hard_link_dir_recursive(&new_from, &new_to).with_context(|| {
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format!("Dir {} to {}", new_from.display(), new_to.display())
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})?;
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} else if file_type.is_file() {
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// note: chance for race conditions here between attempting to create,
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// then removing, then attempting to create. There doesn't seem to be
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// a way to hard link with overwriting in Rust, but maybe there is some
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// way with platform specific code. The workaround here is to handle
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// scenarios where something else might create or remove files.
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if let Err(err) = std::fs::hard_link(&new_from, &new_to) {
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if err.kind() == ErrorKind::AlreadyExists {
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if let Err(err) = std::fs::remove_file(&new_to) {
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if err.kind() == ErrorKind::NotFound {
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// Assume another process/thread created this hard link to the file we are wanting
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// to remove then sleep a little bit to let the other process/thread move ahead
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// faster to reduce contention.
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std::thread::sleep(Duration::from_millis(10));
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} else {
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return Err(err).with_context(|| {
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format!(
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"Removing file to hard link {} to {}",
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new_from.display(),
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new_to.display()
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)
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});
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}
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}
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// Always attempt to recreate the hardlink. In contention scenarios, the other process
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// might have been killed or exited after removing the file, but before creating the hardlink
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if let Err(err) = std::fs::hard_link(&new_from, &new_to) {
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// Assume another process/thread created this hard link to the file we are wanting
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// to now create then sleep a little bit to let the other process/thread move ahead
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// faster to reduce contention.
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if err.kind() == ErrorKind::AlreadyExists {
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std::thread::sleep(Duration::from_millis(10));
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} else {
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return Err(err).with_context(|| {
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format!(
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"Hard linking {} to {}",
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new_from.display(),
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new_to.display()
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)
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});
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}
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}
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} else {
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return Err(err).with_context(|| {
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format!(
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"Hard linking {} to {}",
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new_from.display(),
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new_to.display()
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)
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});
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}
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}
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}
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}
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Ok(())
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}
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pub fn symlink_dir(oldpath: &Path, newpath: &Path) -> Result<(), AnyError> {
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let err_mapper = |err: Error| {
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Error::new(
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err.kind(),
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format!(
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"{}, symlink '{}' -> '{}'",
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err,
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oldpath.display(),
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newpath.display()
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),
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)
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};
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#[cfg(unix)]
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{
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use std::os::unix::fs::symlink;
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symlink(oldpath, newpath).map_err(err_mapper)?;
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}
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#[cfg(not(unix))]
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{
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use std::os::windows::fs::symlink_dir;
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symlink_dir(oldpath, newpath).map_err(err_mapper)?;
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}
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Ok(())
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}
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/// Gets the total size (in bytes) of a directory.
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pub fn dir_size(path: &Path) -> std::io::Result<u64> {
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let entries = std::fs::read_dir(path)?;
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let mut total = 0;
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for entry in entries {
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let entry = entry?;
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total += match entry.metadata()? {
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data if data.is_dir() => dir_size(&entry.path())?,
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data => data.len(),
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};
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}
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Ok(total)
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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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use test_util::TempDir;
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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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#[test]
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fn test_collect_files() {
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fn create_files(dir_path: &Path, files: &[&str]) {
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std::fs::create_dir(dir_path).expect("Failed to create directory");
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for f in files {
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let path = dir_path.join(f);
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std::fs::write(path, "").expect("Failed to create file");
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}
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}
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// dir.ts
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// ├── a.ts
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// ├── b.js
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// ├── child
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// │ ├── e.mjs
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// │ ├── f.mjsx
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// │ ├── .foo.TS
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// │ └── README.md
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// ├── c.tsx
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// ├── d.jsx
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// └── ignore
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// ├── g.d.ts
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// └── .gitignore
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let t = TempDir::new();
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let root_dir_path = t.path().join("dir.ts");
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let root_dir_files = ["a.ts", "b.js", "c.tsx", "d.jsx"];
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create_files(&root_dir_path, &root_dir_files);
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let child_dir_path = root_dir_path.join("child");
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let child_dir_files = ["e.mjs", "f.mjsx", ".foo.TS", "README.md"];
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create_files(&child_dir_path, &child_dir_files);
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let ignore_dir_path = root_dir_path.join("ignore");
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let ignore_dir_files = ["g.d.ts", ".gitignore"];
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create_files(&ignore_dir_path, &ignore_dir_files);
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let result = collect_files(&[root_dir_path], &[ignore_dir_path], |path| {
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// exclude dotfiles
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path
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.file_name()
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.and_then(|f| f.to_str())
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.map_or(false, |f| !f.starts_with('.'))
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})
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.unwrap();
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let expected = [
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"a.ts",
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"b.js",
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"e.mjs",
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"f.mjsx",
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"README.md",
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"c.tsx",
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"d.jsx",
|
|
];
|
|
for e in expected.iter() {
|
|
assert!(result.iter().any(|r| r.ends_with(e)));
|
|
}
|
|
assert_eq!(result.len(), expected.len());
|
|
}
|
|
|
|
#[test]
|
|
fn test_collect_specifiers() {
|
|
fn create_files(dir_path: &Path, files: &[&str]) {
|
|
std::fs::create_dir(dir_path).expect("Failed to create directory");
|
|
for f in files {
|
|
let path = dir_path.join(f);
|
|
std::fs::write(path, "").expect("Failed to create file");
|
|
}
|
|
}
|
|
|
|
// dir.ts
|
|
// ├── a.ts
|
|
// ├── b.js
|
|
// ├── child
|
|
// │ ├── e.mjs
|
|
// │ ├── f.mjsx
|
|
// │ ├── .foo.TS
|
|
// │ └── README.md
|
|
// ├── c.tsx
|
|
// ├── d.jsx
|
|
// └── ignore
|
|
// ├── g.d.ts
|
|
// └── .gitignore
|
|
|
|
let t = TempDir::new();
|
|
|
|
let root_dir_path = t.path().join("dir.ts");
|
|
let root_dir_files = ["a.ts", "b.js", "c.tsx", "d.jsx"];
|
|
create_files(&root_dir_path, &root_dir_files);
|
|
|
|
let child_dir_path = root_dir_path.join("child");
|
|
let child_dir_files = ["e.mjs", "f.mjsx", ".foo.TS", "README.md"];
|
|
create_files(&child_dir_path, &child_dir_files);
|
|
|
|
let ignore_dir_path = root_dir_path.join("ignore");
|
|
let ignore_dir_files = ["g.d.ts", ".gitignore"];
|
|
create_files(&ignore_dir_path, &ignore_dir_files);
|
|
|
|
let predicate = |path: &Path| {
|
|
// exclude dotfiles
|
|
path
|
|
.file_name()
|
|
.and_then(|f| f.to_str())
|
|
.map_or(false, |f| !f.starts_with('.'))
|
|
};
|
|
|
|
let result = collect_specifiers(
|
|
vec![
|
|
"http://localhost:8080".to_string(),
|
|
root_dir_path.to_str().unwrap().to_string(),
|
|
"https://localhost:8080".to_string(),
|
|
],
|
|
&[ignore_dir_path],
|
|
predicate,
|
|
)
|
|
.unwrap();
|
|
|
|
let root_dir_url = ModuleSpecifier::from_file_path(
|
|
canonicalize_path(&root_dir_path).unwrap(),
|
|
)
|
|
.unwrap()
|
|
.to_string();
|
|
let expected: Vec<ModuleSpecifier> = [
|
|
"http://localhost:8080",
|
|
&format!("{}/a.ts", root_dir_url),
|
|
&format!("{}/b.js", root_dir_url),
|
|
&format!("{}/c.tsx", root_dir_url),
|
|
&format!("{}/child/README.md", root_dir_url),
|
|
&format!("{}/child/e.mjs", root_dir_url),
|
|
&format!("{}/child/f.mjsx", root_dir_url),
|
|
&format!("{}/d.jsx", root_dir_url),
|
|
"https://localhost:8080",
|
|
]
|
|
.iter()
|
|
.map(|f| ModuleSpecifier::parse(f).unwrap())
|
|
.collect::<Vec<_>>();
|
|
|
|
assert_eq!(result, expected);
|
|
|
|
let scheme = if cfg!(target_os = "windows") {
|
|
"file:///"
|
|
} else {
|
|
"file://"
|
|
};
|
|
let result = collect_specifiers(
|
|
vec![format!(
|
|
"{}{}",
|
|
scheme,
|
|
root_dir_path
|
|
.join("child")
|
|
.to_str()
|
|
.unwrap()
|
|
.replace('\\', "/")
|
|
)],
|
|
&[],
|
|
predicate,
|
|
)
|
|
.unwrap();
|
|
|
|
let expected: Vec<ModuleSpecifier> = [
|
|
&format!("{}/child/README.md", root_dir_url),
|
|
&format!("{}/child/e.mjs", root_dir_url),
|
|
&format!("{}/child/f.mjsx", root_dir_url),
|
|
]
|
|
.iter()
|
|
.map(|f| ModuleSpecifier::parse(f).unwrap())
|
|
.collect::<Vec<_>>();
|
|
|
|
assert_eq!(result, expected);
|
|
}
|
|
|
|
#[cfg(windows)]
|
|
#[test]
|
|
fn test_strip_unc_prefix() {
|
|
run_test(r"C:\", r"C:\");
|
|
run_test(r"C:\test\file.txt", r"C:\test\file.txt");
|
|
|
|
run_test(r"\\?\C:\", r"C:\");
|
|
run_test(r"\\?\C:\test\file.txt", r"C:\test\file.txt");
|
|
|
|
run_test(r"\\.\C:\", r"\\.\C:\");
|
|
run_test(r"\\.\C:\Test\file.txt", r"\\.\C:\Test\file.txt");
|
|
|
|
run_test(r"\\?\UNC\localhost\", r"\\localhost");
|
|
run_test(r"\\?\UNC\localhost\c$\", r"\\localhost\c$");
|
|
run_test(
|
|
r"\\?\UNC\localhost\c$\Windows\file.txt",
|
|
r"\\localhost\c$\Windows\file.txt",
|
|
);
|
|
run_test(r"\\?\UNC\wsl$\deno.json", r"\\wsl$\deno.json");
|
|
|
|
run_test(r"\\?\server1", r"\\server1");
|
|
run_test(r"\\?\server1\e$\", r"\\server1\e$\");
|
|
run_test(
|
|
r"\\?\server1\e$\test\file.txt",
|
|
r"\\server1\e$\test\file.txt",
|
|
);
|
|
|
|
fn run_test(input: &str, expected: &str) {
|
|
assert_eq!(
|
|
strip_unc_prefix(PathBuf::from(input)),
|
|
PathBuf::from(expected)
|
|
);
|
|
}
|
|
}
|
|
}
|