#![cfg_attr(not(unix), allow(unused))] use anyhow::{Context as _, Result};use collections::HashMap; /// Capture all environment variables from the login shell.#[cfg(unix)]pub fn capture(directory: &std::path::Path) -> Result<collections::HashMap<String, String>> { use std::os::unix::process::CommandExt; use std::process::Stdio; let zed_path = super::get_shell_safe_zed_path()?; let shell_path = std::env::var("SHELL").map(std::path::PathBuf::from)?; let shell_name = shell_path.file_name().and_then(std::ffi::OsStr::to_str); let mut command_string = String::new(); let mut command = std::process::Command::new(&shell_path); // In some shells, file descriptors greater than 2 cannot be used in interactive mode, // so file descriptor 0 (stdin) is used instead. This impacts zsh, old bash; perhaps others. // See: https://github.com/zed-industries/zed/pull/32136#issuecomment-2999645482 const ENV_OUTPUT_FD: std::os::fd::RawFd = 0; let redir = match shell_name { Some("rc") => format!(">[1={}]", ENV_OUTPUT_FD), // `[1=0]` _ => format!(">&{}", ENV_OUTPUT_FD), // `>&0` }; command.stdin(Stdio::null()); command.stdout(Stdio::piped()); command.stderr(Stdio::piped()); match shell_name { Some("tcsh" | "csh") => { // For csh/tcsh, login shell requires passing `-` as 0th argument (instead of `-l`) command.arg0("-"); } Some("fish") => { // in fish, asdf, direnv attach to the `fish_prompt` event command_string.push_str("emit fish_prompt;"); command.arg("-l"); } _ => { command.arg("-l"); } } // cd into the directory, triggering directory specific side-effects (asdf, direnv, etc) command_string.push_str(&format!("cd '{}';", directory.display())); command_string.push_str(&format!("{} --printenv {}", zed_path, redir)); command.args(["-i", "-c", &command_string]); super::set_pre_exec_to_start_new_session(&mut command); let (env_output, process_output) = spawn_and_read_fd(command, ENV_OUTPUT_FD)?; let env_output = String::from_utf8_lossy(&env_output); anyhow::ensure!( process_output.status.success(), "login shell exited with {}. stdout: {:?}, stderr: {:?}", process_output.status, String::from_utf8_lossy(&process_output.stdout), String::from_utf8_lossy(&process_output.stderr), ); // Parse the JSON output from zed --printenv let env_map: collections::HashMap<String, String> = serde_json::from_str(&env_output) .with_context(|| "Failed to deserialize environment variables from json")?; Ok(env_map)} #[cfg(unix)]fn spawn_and_read_fd( mut command: std::process::Command, child_fd: std::os::fd::RawFd,) -> anyhow::Result<(Vec<u8>, std::process::Output)> { use command_fds::{CommandFdExt, FdMapping}; use std::io::Read; let (mut reader, writer) = std::io::pipe()?; command.fd_mappings(vec![FdMapping { parent_fd: writer.into(), child_fd, }])?; let process = command.spawn()?; drop(command); let mut buffer = Vec::new(); reader.read_to_end(&mut buffer)?; Ok((buffer, process.wait_with_output()?))} pub fn print_env() { let env_vars: HashMap<String, String> = std::env::vars().collect(); let json = serde_json::to_string_pretty(&env_vars).unwrap_or_else(|err| { eprintln!("Error serializing environment variables: {}", err); std::process::exit(1); }); println!("{}", json); std::process::exit(0);}
#![cfg_attr(not(unix), allow(unused))]
use anyhow::{Context as _, Result};
use collections::HashMap;
/// Capture all environment variables from the login shell.
#[cfg(unix)]
pub fn capture(directory: &std::path::Path) -> Result<collections::HashMap<String, String>> {
use std::os::unix::process::CommandExt;
use std::process::Stdio;
let zed_path = super::get_shell_safe_zed_path()?;
let shell_path = std::env::var("SHELL").map(std::path::PathBuf::from)?;
let shell_name = shell_path.file_name().and_then(std::ffi::OsStr::to_str);
let mut command_string = String::new();
let mut command = std::process::Command::new(&shell_path);
// In some shells, file descriptors greater than 2 cannot be used in interactive mode,
// so file descriptor 0 (stdin) is used instead. This impacts zsh, old bash; perhaps others.
// See: https://github.com/zed-industries/zed/pull/32136#issuecomment-2999645482
const ENV_OUTPUT_FD: std::os::fd::RawFd = 0;
let redir = match shell_name {
Some("rc") => format!(">[1={}]", ENV_OUTPUT_FD), // `[1=0]`
_ => format!(">&{}", ENV_OUTPUT_FD), // `>&0`
};
command.stdin(Stdio::null());
command.stdout(Stdio::piped());
command.stderr(Stdio::piped());
match shell_name {
Some("tcsh" | "csh") => {
// For csh/tcsh, login shell requires passing `-` as 0th argument (instead of `-l`)
command.arg0("-");
}
Some("fish") => {
// in fish, asdf, direnv attach to the `fish_prompt` event
command_string.push_str("emit fish_prompt;");
command.arg("-l");
}
_ => {
command.arg("-l");
}
}
// cd into the directory, triggering directory specific side-effects (asdf, direnv, etc)
command_string.push_str(&format!("cd '{}';", directory.display()));
command_string.push_str(&format!("{} --printenv {}", zed_path, redir));
command.args(["-i", "-c", &command_string]);
super::set_pre_exec_to_start_new_session(&mut command);
let (env_output, process_output) = spawn_and_read_fd(command, ENV_OUTPUT_FD)?;
let env_output = String::from_utf8_lossy(&env_output);
anyhow::ensure!(
process_output.status.success(),
"login shell exited with {}. stdout: {:?}, stderr: {:?}",
process_output.status,
String::from_utf8_lossy(&process_output.stdout),
String::from_utf8_lossy(&process_output.stderr),
);
// Parse the JSON output from zed --printenv
let env_map: collections::HashMap<String, String> = serde_json::from_str(&env_output)
.with_context(|| "Failed to deserialize environment variables from json")?;
Ok(env_map)
}
#[cfg(unix)]
fn spawn_and_read_fd(
mut command: std::process::Command,
child_fd: std::os::fd::RawFd,
) -> anyhow::Result<(Vec<u8>, std::process::Output)> {
use command_fds::{CommandFdExt, FdMapping};
use std::io::Read;
let (mut reader, writer) = std::io::pipe()?;
command.fd_mappings(vec![FdMapping {
parent_fd: writer.into(),
child_fd,
}])?;
let process = command.spawn()?;
drop(command);
let mut buffer = Vec::new();
reader.read_to_end(&mut buffer)?;
Ok((buffer, process.wait_with_output()?))
}
pub fn print_env() {
let env_vars: HashMap<String, String> = std::env::vars().collect();
let json = serde_json::to_string_pretty(&env_vars).unwrap_or_else(|err| {
eprintln!("Error serializing environment variables: {}", err);
std::process::exit(1);
});
println!("{}", json);
std::process::exit(0);
}