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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use crate::npm::managed::NpmResolutionPackage;
use deno_core::anyhow::Context;
use deno_core::error::AnyError;
use std::path::Path;
pub(super) fn set_up_bin_entry(
package: &NpmResolutionPackage,
bin_name: &str,
#[allow(unused_variables)] bin_script: &str,
#[allow(unused_variables)] package_path: &Path,
bin_node_modules_dir_path: &Path,
) -> Result<(), AnyError> {
#[cfg(windows)]
{
set_up_bin_shim(package, bin_name, bin_node_modules_dir_path)?;
}
#[cfg(unix)]
{
symlink_bin_entry(
package,
bin_name,
bin_script,
package_path,
bin_node_modules_dir_path,
)?;
}
Ok(())
}
#[cfg(windows)]
fn set_up_bin_shim(
package: &NpmResolutionPackage,
bin_name: &str,
bin_node_modules_dir_path: &Path,
) -> Result<(), AnyError> {
use std::fs;
let mut cmd_shim = bin_node_modules_dir_path.join(bin_name);
cmd_shim.set_extension("cmd");
let shim = format!("@deno run -A npm:{}/{bin_name} %*", package.id.nv);
if cmd_shim.exists() {
if let Ok(contents) = fs::read_to_string(cmd_shim) {
if contents == shim {
// up to date
return Ok(());
}
}
return Ok(());
}
fs::write(&cmd_shim, shim).with_context(|| {
format!("Can't set up '{}' bin at {}", bin_name, cmd_shim.display())
})?;
Ok(())
}
#[cfg(unix)]
fn symlink_bin_entry(
_package: &NpmResolutionPackage,
bin_name: &str,
bin_script: &str,
package_path: &Path,
bin_node_modules_dir_path: &Path,
) -> Result<(), AnyError> {
use std::os::unix::fs::symlink;
let link = bin_node_modules_dir_path.join(bin_name);
let original = package_path.join(bin_script);
// Don't bother setting up another link if it already exists
if link.exists() {
let resolved = std::fs::read_link(&link).ok();
if let Some(resolved) = resolved {
if resolved != original {
log::warn!(
"{} Trying to set up '{}' bin for \"{}\", but an entry pointing to \"{}\" already exists. Skipping...",
deno_terminal::colors::yellow("Warning"),
bin_name,
resolved.display(),
original.display()
);
}
return Ok(());
}
}
use std::os::unix::fs::PermissionsExt;
let mut perms = std::fs::metadata(&original).unwrap().permissions();
if perms.mode() & 0o111 == 0 {
// if the original file is not executable, make it executable
perms.set_mode(perms.mode() | 0o111);
std::fs::set_permissions(&original, perms).with_context(|| {
format!("Setting permissions on '{}'", original.display())
})?;
}
let original_relative =
crate::util::path::relative_path(bin_node_modules_dir_path, &original)
.unwrap_or(original);
symlink(&original_relative, &link).with_context(|| {
format!(
"Can't set up '{}' bin at {}",
bin_name,
original_relative.display()
)
})?;
Ok(())
}
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