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denoland-deno/cli/tools/task.rs
2024-01-04 20:34:52 +01:00

500 lines
15 KiB
Rust

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use crate::args::CliOptions;
use crate::args::Flags;
use crate::args::TaskFlags;
use crate::colors;
use crate::factory::CliFactory;
use crate::npm::CliNpmResolver;
use crate::npm::InnerCliNpmResolverRef;
use crate::npm::ManagedCliNpmResolver;
use crate::util::fs::canonicalize_path;
use deno_core::anyhow::bail;
use deno_core::anyhow::Context;
use deno_core::error::AnyError;
use deno_core::futures;
use deno_core::futures::future::LocalBoxFuture;
use deno_runtime::deno_node::NodeResolver;
use deno_semver::package::PackageNv;
use deno_task_shell::ExecuteResult;
use deno_task_shell::ShellCommand;
use deno_task_shell::ShellCommandContext;
use indexmap::IndexMap;
use lazy_regex::Lazy;
use regex::Regex;
use std::collections::HashMap;
use std::path::Path;
use std::path::PathBuf;
use std::rc::Rc;
use tokio::task::LocalSet;
pub async fn execute_script(
flags: Flags,
task_flags: TaskFlags,
) -> Result<i32, AnyError> {
let factory = CliFactory::from_flags(flags).await?;
let cli_options = factory.cli_options();
let tasks_config = cli_options.resolve_tasks_config()?;
let maybe_package_json = cli_options.maybe_package_json();
let package_json_scripts = maybe_package_json
.as_ref()
.and_then(|p| p.scripts.clone())
.unwrap_or_default();
let task_name = match &task_flags.task {
Some(task) => task,
None => {
print_available_tasks(&tasks_config, &package_json_scripts);
return Ok(1);
}
};
if let Some(script) = tasks_config.get(task_name) {
let config_file_url = cli_options.maybe_config_file_specifier().unwrap();
let config_file_path = if config_file_url.scheme() == "file" {
config_file_url.to_file_path().unwrap()
} else {
bail!("Only local configuration files are supported")
};
let cwd = match task_flags.cwd {
Some(path) => canonicalize_path(&PathBuf::from(path))?,
None => config_file_path.parent().unwrap().to_owned(),
};
let script = get_script_with_args(script, cli_options);
output_task(task_name, &script);
let seq_list = deno_task_shell::parser::parse(&script)
.with_context(|| format!("Error parsing script '{task_name}'."))?;
let env_vars = collect_env_vars();
let local = LocalSet::new();
let future =
deno_task_shell::execute(seq_list, env_vars, &cwd, Default::default());
let exit_code = local.run_until(future).await;
Ok(exit_code)
} else if package_json_scripts.contains_key(task_name) {
let package_json_deps_provider = factory.package_json_deps_provider();
let npm_resolver = factory.npm_resolver().await?;
let node_resolver = factory.node_resolver().await?;
if let Some(package_deps) = package_json_deps_provider.deps() {
for (key, value) in package_deps {
if let Err(err) = value {
log::info!(
"{} Ignoring dependency '{}' in package.json because its version requirement failed to parse: {:#}",
colors::yellow("Warning"),
key,
err,
);
}
}
}
// install the npm packages if we're using a managed resolver
if let Some(npm_resolver) = npm_resolver.as_managed() {
npm_resolver.ensure_top_level_package_json_install().await?;
npm_resolver.resolve_pending().await?;
}
let cwd = match task_flags.cwd {
Some(path) => canonicalize_path(&PathBuf::from(path))?,
None => maybe_package_json
.as_ref()
.unwrap()
.path
.parent()
.unwrap()
.to_owned(),
};
// At this point we already checked if the task name exists in package.json.
// We can therefore check for "pre" and "post" scripts too, since we're only
// dealing with package.json here and not deno.json
let task_names = vec![
format!("pre{}", task_name),
task_name.clone(),
format!("post{}", task_name),
];
for task_name in task_names {
if let Some(script) = package_json_scripts.get(&task_name) {
let script = get_script_with_args(script, cli_options);
output_task(&task_name, &script);
let seq_list = deno_task_shell::parser::parse(&script)
.with_context(|| format!("Error parsing script '{task_name}'."))?;
let npx_commands = match npm_resolver.as_inner() {
InnerCliNpmResolverRef::Managed(npm_resolver) => {
resolve_npm_commands(npm_resolver, node_resolver)?
}
InnerCliNpmResolverRef::Byonm(npm_resolver) => {
let node_modules_dir =
npm_resolver.root_node_modules_path().unwrap();
resolve_npm_commands_from_bin_dir(node_modules_dir)?
}
};
let env_vars = match npm_resolver.root_node_modules_path() {
Some(dir_path) => collect_env_vars_with_node_modules_dir(dir_path),
None => collect_env_vars(),
};
let local = LocalSet::new();
let future =
deno_task_shell::execute(seq_list, env_vars, &cwd, npx_commands);
let exit_code = local.run_until(future).await;
if exit_code > 0 {
return Ok(exit_code);
}
}
}
Ok(0)
} else {
eprintln!("Task not found: {task_name}");
print_available_tasks(&tasks_config, &package_json_scripts);
Ok(1)
}
}
fn get_script_with_args(script: &str, options: &CliOptions) -> String {
let additional_args = options
.argv()
.iter()
// surround all the additional arguments in double quotes
// and sanitize any command substitution
.map(|a| format!("\"{}\"", a.replace('"', "\\\"").replace('$', "\\$")))
.collect::<Vec<_>>()
.join(" ");
let script = format!("{script} {additional_args}");
script.trim().to_owned()
}
fn output_task(task_name: &str, script: &str) {
log::info!(
"{} {} {}",
colors::green("Task"),
colors::cyan(&task_name),
script,
);
}
fn collect_env_vars_with_node_modules_dir(
node_modules_dir_path: &Path,
) -> HashMap<String, String> {
let mut env_vars = collect_env_vars();
prepend_to_path(
&mut env_vars,
node_modules_dir_path
.join(".bin")
.to_string_lossy()
.to_string(),
);
env_vars
}
fn prepend_to_path(env_vars: &mut HashMap<String, String>, value: String) {
match env_vars.get_mut("PATH") {
Some(path) => {
if path.is_empty() {
*path = value;
} else {
*path =
format!("{}{}{}", value, if cfg!(windows) { ";" } else { ":" }, path);
}
}
None => {
env_vars.insert("PATH".to_string(), value);
}
}
}
fn collect_env_vars() -> HashMap<String, String> {
// get the starting env vars (the PWD env var will be set by deno_task_shell)
let mut env_vars = std::env::vars().collect::<HashMap<String, String>>();
const INIT_CWD_NAME: &str = "INIT_CWD";
if !env_vars.contains_key(INIT_CWD_NAME) {
if let Ok(cwd) = std::env::current_dir() {
// if not set, set an INIT_CWD env var that has the cwd
env_vars
.insert(INIT_CWD_NAME.to_string(), cwd.to_string_lossy().to_string());
}
}
env_vars
}
fn print_available_tasks(
// order can be important, so these use an index map
tasks_config: &IndexMap<String, String>,
package_json_scripts: &IndexMap<String, String>,
) {
eprintln!("{}", colors::green("Available tasks:"));
let mut had_task = false;
for (is_deno, (key, value)) in tasks_config.iter().map(|e| (true, e)).chain(
package_json_scripts
.iter()
.filter(|(key, _)| !tasks_config.contains_key(*key))
.map(|e| (false, e)),
) {
eprintln!(
"- {}{}",
colors::cyan(key),
if is_deno {
"".to_string()
} else {
format!(" {}", colors::italic_gray("(package.json)"))
}
);
eprintln!(" {value}");
had_task = true;
}
if !had_task {
eprintln!(" {}", colors::red("No tasks found in configuration file"));
}
}
struct NpxCommand;
impl ShellCommand for NpxCommand {
fn execute(
&self,
mut context: ShellCommandContext,
) -> LocalBoxFuture<'static, ExecuteResult> {
if let Some(first_arg) = context.args.first().cloned() {
if let Some(command) = context.state.resolve_command(&first_arg) {
let context = ShellCommandContext {
args: context.args.iter().skip(1).cloned().collect::<Vec<_>>(),
..context
};
command.execute(context)
} else {
let _ = context
.stderr
.write_line(&format!("npx: could not resolve command '{first_arg}'"));
Box::pin(futures::future::ready(ExecuteResult::from_exit_code(1)))
}
} else {
let _ = context.stderr.write_line("npx: missing command");
Box::pin(futures::future::ready(ExecuteResult::from_exit_code(1)))
}
}
}
#[derive(Clone)]
struct NpmPackageBinCommand {
name: String,
npm_package: PackageNv,
}
impl ShellCommand for NpmPackageBinCommand {
fn execute(
&self,
context: ShellCommandContext,
) -> LocalBoxFuture<'static, ExecuteResult> {
let mut args = vec![
"run".to_string(),
"-A".to_string(),
if self.npm_package.name == self.name {
format!("npm:{}", self.npm_package)
} else {
format!("npm:{}/{}", self.npm_package, self.name)
},
];
args.extend(context.args);
let executable_command =
deno_task_shell::ExecutableCommand::new("deno".to_string());
executable_command.execute(ShellCommandContext { args, ..context })
}
}
/// Runs a module in the node_modules folder.
#[derive(Clone)]
struct NodeModulesFileRunCommand {
command_name: String,
path: PathBuf,
}
impl ShellCommand for NodeModulesFileRunCommand {
fn execute(
&self,
mut context: ShellCommandContext,
) -> LocalBoxFuture<'static, ExecuteResult> {
let mut args = vec![
"run".to_string(),
"--ext=js".to_string(),
"-A".to_string(),
self.path.to_string_lossy().to_string(),
];
args.extend(context.args);
let executable_command =
deno_task_shell::ExecutableCommand::new("deno".to_string());
// set this environment variable so that the launched process knows the npm command name
context
.state
.apply_env_var("DENO_INTERNAL_NPM_CMD_NAME", &self.command_name);
executable_command.execute(ShellCommandContext { args, ..context })
}
}
fn resolve_npm_commands_from_bin_dir(
node_modules_dir: &Path,
) -> Result<HashMap<String, Rc<dyn ShellCommand>>, AnyError> {
let mut result = HashMap::<String, Rc<dyn ShellCommand>>::new();
let bin_dir = node_modules_dir.join(".bin");
log::debug!("Resolving commands in '{}'.", bin_dir.display());
match std::fs::read_dir(&bin_dir) {
Ok(entries) => {
for entry in entries {
let Ok(entry) = entry else {
continue;
};
if let Some(command) = resolve_bin_dir_entry_command(entry) {
result.insert(command.command_name.clone(), Rc::new(command));
}
}
}
Err(err) => {
log::debug!("Failed read_dir for '{}': {:#}", bin_dir.display(), err);
}
}
Ok(result)
}
fn resolve_bin_dir_entry_command(
entry: std::fs::DirEntry,
) -> Option<NodeModulesFileRunCommand> {
if entry.path().extension().is_some() {
return None; // only look at files without extensions (even on Windows)
}
let file_type = entry.file_type().ok()?;
let path = if file_type.is_file() {
entry.path()
} else if file_type.is_symlink() {
entry.path().canonicalize().ok()?
} else {
return None;
};
let text = std::fs::read_to_string(&path).ok()?;
let command_name = entry.file_name().to_string_lossy().to_string();
if let Some(path) = resolve_execution_path_from_npx_shim(path, &text) {
log::debug!(
"Resolved npx command '{}' to '{}'.",
command_name,
path.display()
);
Some(NodeModulesFileRunCommand { command_name, path })
} else {
log::debug!("Failed resolving npx command '{}'.", command_name);
None
}
}
/// This is not ideal, but it works ok because it allows us to bypass
/// the shebang and execute the script directly with Deno.
fn resolve_execution_path_from_npx_shim(
file_path: PathBuf,
text: &str,
) -> Option<PathBuf> {
static SCRIPT_PATH_RE: Lazy<Regex> =
lazy_regex::lazy_regex!(r#""\$basedir\/([^"]+)" "\$@""#);
if text.starts_with("#!/usr/bin/env node") {
// launch this file itself because it's a JS file
Some(file_path)
} else {
// Search for...
// > "$basedir/../next/dist/bin/next" "$@"
// ...which is what it will look like on Windows
SCRIPT_PATH_RE
.captures(text)
.and_then(|c| c.get(1))
.map(|relative_path| {
file_path.parent().unwrap().join(relative_path.as_str())
})
}
}
fn resolve_npm_commands(
npm_resolver: &ManagedCliNpmResolver,
node_resolver: &NodeResolver,
) -> Result<HashMap<String, Rc<dyn ShellCommand>>, AnyError> {
let mut result = HashMap::new();
let snapshot = npm_resolver.snapshot();
for id in snapshot.top_level_packages() {
let package_folder = npm_resolver.resolve_pkg_folder_from_pkg_id(id)?;
let bin_commands =
node_resolver.resolve_binary_commands(&package_folder)?;
for bin_command in bin_commands {
result.insert(
bin_command.to_string(),
Rc::new(NpmPackageBinCommand {
name: bin_command,
npm_package: id.nv.clone(),
}) as Rc<dyn ShellCommand>,
);
}
}
if !result.contains_key("npx") {
result.insert("npx".to_string(), Rc::new(NpxCommand));
}
Ok(result)
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_prepend_to_path() {
let mut env_vars = HashMap::new();
prepend_to_path(&mut env_vars, "/example".to_string());
assert_eq!(
env_vars,
HashMap::from([("PATH".to_string(), "/example".to_string())])
);
prepend_to_path(&mut env_vars, "/example2".to_string());
let separator = if cfg!(windows) { ";" } else { ":" };
assert_eq!(
env_vars,
HashMap::from([(
"PATH".to_string(),
format!("/example2{}/example", separator)
)])
);
env_vars.get_mut("PATH").unwrap().clear();
prepend_to_path(&mut env_vars, "/example".to_string());
assert_eq!(
env_vars,
HashMap::from([("PATH".to_string(), "/example".to_string())])
);
}
#[test]
fn test_resolve_execution_path_from_npx_shim() {
// example shim on unix
let unix_shim = r#"#!/usr/bin/env node
"use strict";
console.log('Hi!');
"#;
let path = PathBuf::from("/node_modules/.bin/example");
assert_eq!(
resolve_execution_path_from_npx_shim(path.clone(), unix_shim).unwrap(),
path
);
// example shim on windows
let windows_shim = r#"#!/bin/sh
basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
case `uname` in
*CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
esac
if [ -x "$basedir/node" ]; then
exec "$basedir/node" "$basedir/../example/bin/example" "$@"
else
exec node "$basedir/../example/bin/example" "$@"
fi"#;
assert_eq!(
resolve_execution_path_from_npx_shim(path.clone(), windows_shim).unwrap(),
path.parent().unwrap().join("../example/bin/example")
);
}
}