forked from extern/nushell
31e1410191
# Description Use the `use_ansi_coloring` configuration point to decide whether the output will have colors, where possible. Related: https://github.com/nushell/nushell/issues/7676  - [x] `grid -c` - [x] `perf()` # User-Facing Changes _(List of all changes that impact the user experience here. This helps us keep track of breaking changes.)_ # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
1194 lines
41 KiB
Rust
1194 lines
41 KiB
Rust
use crate::{
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completions::NuCompleter,
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prompt_update,
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reedline_config::{add_menus, create_keybindings, KeybindingsMode},
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util::{eval_source, get_guaranteed_cwd, report_error, report_error_new},
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NuHighlighter, NuValidator, NushellPrompt,
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};
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use crossterm::cursor::CursorShape;
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use log::{trace, warn};
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use miette::{IntoDiagnostic, Result};
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use nu_color_config::StyleComputer;
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use nu_engine::{convert_env_values, eval_block, eval_block_with_early_return};
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use nu_parser::{lex, parse, trim_quotes_str};
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use nu_protocol::{
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ast::PathMember,
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config::NuCursorShape,
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engine::{EngineState, ReplOperation, Stack, StateWorkingSet},
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format_duration, BlockId, HistoryFileFormat, PipelineData, PositionalArg, ShellError, Span,
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Spanned, Type, Value, VarId,
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};
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use nu_utils::utils::perf;
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use reedline::{CursorConfig, DefaultHinter, EditCommand, Emacs, SqliteBackedHistory, Vi};
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use std::{
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io::{self, Write},
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sync::atomic::Ordering,
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time::Instant,
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};
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use sysinfo::SystemExt;
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// According to Daniel Imms @Tyriar, we need to do these this way:
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// <133 A><prompt><133 B><command><133 C><command output>
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// These first two have been moved to prompt_update to get as close as possible to the prompt.
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// const PRE_PROMPT_MARKER: &str = "\x1b]133;A\x1b\\";
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// const POST_PROMPT_MARKER: &str = "\x1b]133;B\x1b\\";
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const PRE_EXECUTE_MARKER: &str = "\x1b]133;C\x1b\\";
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// This one is in get_command_finished_marker() now so we can capture the exit codes properly.
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// const CMD_FINISHED_MARKER: &str = "\x1b]133;D;{}\x1b\\";
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const RESET_APPLICATION_MODE: &str = "\x1b[?1l";
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pub fn evaluate_repl(
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engine_state: &mut EngineState,
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stack: &mut Stack,
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nushell_path: &str,
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prerun_command: Option<Spanned<String>>,
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entire_start_time: Instant,
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) -> Result<()> {
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use reedline::{FileBackedHistory, Reedline, Signal};
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let use_color = engine_state.get_config().use_ansi_coloring;
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// Guard against invocation without a connected terminal.
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// reedline / crossterm event polling will fail without a connected tty
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if !atty::is(atty::Stream::Stdin) {
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return Err(std::io::Error::new(
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std::io::ErrorKind::NotFound,
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"Nushell launched as a REPL, but STDIN is not a TTY; either launch in a valid terminal or provide arguments to invoke a script!",
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))
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.into_diagnostic();
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}
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let mut entry_num = 0;
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let mut nu_prompt = NushellPrompt::new();
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let start_time = std::time::Instant::now();
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// Translate environment variables from Strings to Values
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if let Some(e) = convert_env_values(engine_state, stack) {
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let working_set = StateWorkingSet::new(engine_state);
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report_error(&working_set, &e);
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}
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perf(
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"translate env vars",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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// seed env vars
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stack.add_env_var(
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"CMD_DURATION_MS".into(),
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Value::string("0823", Span::unknown()),
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);
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stack.add_env_var("LAST_EXIT_CODE".into(), Value::int(0, Span::unknown()));
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let mut start_time = std::time::Instant::now();
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let mut line_editor = Reedline::create();
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// Now that reedline is created, get the history session id and store it in engine_state
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let hist_sesh = line_editor
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.get_history_session_id()
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.map(i64::from)
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.unwrap_or(0);
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engine_state.history_session_id = hist_sesh;
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perf(
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"setup reedline",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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let config = engine_state.get_config();
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start_time = std::time::Instant::now();
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let history_path = crate::config_files::get_history_path(
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nushell_path,
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engine_state.config.history_file_format,
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);
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if let Some(history_path) = history_path.as_deref() {
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let history: Box<dyn reedline::History> = match engine_state.config.history_file_format {
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HistoryFileFormat::PlainText => Box::new(
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FileBackedHistory::with_file(
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config.max_history_size as usize,
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history_path.to_path_buf(),
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)
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.into_diagnostic()?,
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),
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HistoryFileFormat::Sqlite => Box::new(
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SqliteBackedHistory::with_file(history_path.to_path_buf()).into_diagnostic()?,
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),
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};
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line_editor = line_editor.with_history(history);
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};
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perf(
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"setup history",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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let sys = sysinfo::System::new();
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let show_banner = config.show_banner;
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let use_ansi = config.use_ansi_coloring;
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if show_banner {
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let banner = get_banner(engine_state, stack);
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if use_ansi {
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println!("{banner}");
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} else {
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println!("{}", nu_utils::strip_ansi_string_likely(banner));
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}
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}
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perf(
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"get sysinfo/show banner",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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if let Some(s) = prerun_command {
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eval_source(
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engine_state,
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stack,
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s.item.as_bytes(),
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&format!("entry #{entry_num}"),
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PipelineData::empty(),
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false,
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);
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engine_state.merge_env(stack, get_guaranteed_cwd(engine_state, stack))?;
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}
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loop {
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let loop_start_time = std::time::Instant::now();
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let cwd = get_guaranteed_cwd(engine_state, stack);
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start_time = std::time::Instant::now();
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// Before doing anything, merge the environment from the previous REPL iteration into the
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// permanent state.
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if let Err(err) = engine_state.merge_env(stack, cwd) {
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report_error_new(engine_state, &err);
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}
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perf(
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"merge env",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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//Reset the ctrl-c handler
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if let Some(ctrlc) = &mut engine_state.ctrlc {
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ctrlc.store(false, Ordering::SeqCst);
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}
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perf(
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"reset ctrlc",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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// Reset the SIGQUIT handler
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if let Some(sig_quit) = engine_state.get_sig_quit() {
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sig_quit.store(false, Ordering::SeqCst);
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}
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perf(
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"reset sig_quit",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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let config = engine_state.get_config();
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let engine_reference = std::sync::Arc::new(engine_state.clone());
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// Find the configured cursor shapes for each mode
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let cursor_config = CursorConfig {
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vi_insert: Some(map_nucursorshape_to_cursorshape(
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config.cursor_shape_vi_insert,
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)),
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vi_normal: Some(map_nucursorshape_to_cursorshape(
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config.cursor_shape_vi_normal,
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)),
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emacs: Some(map_nucursorshape_to_cursorshape(config.cursor_shape_emacs)),
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};
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perf(
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"get config/cursor config",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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line_editor = line_editor
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.with_highlighter(Box::new(NuHighlighter {
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engine_state: engine_reference.clone(),
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config: config.clone(),
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}))
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.with_validator(Box::new(NuValidator {
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engine_state: engine_reference.clone(),
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}))
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.with_completer(Box::new(NuCompleter::new(
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engine_reference.clone(),
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stack.clone(),
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)))
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.with_quick_completions(config.quick_completions)
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.with_partial_completions(config.partial_completions)
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.with_ansi_colors(config.use_ansi_coloring)
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.with_cursor_config(cursor_config);
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perf(
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"reedline builder",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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let style_computer = StyleComputer::from_config(engine_state, stack);
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start_time = std::time::Instant::now();
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line_editor = if config.use_ansi_coloring {
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line_editor.with_hinter(Box::new({
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// As of Nov 2022, "hints" color_config closures only get `null` passed in.
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let style = style_computer.compute("hints", &Value::nothing(Span::unknown()));
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DefaultHinter::default().with_style(style)
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}))
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} else {
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line_editor.disable_hints()
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};
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perf(
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"reedline coloring/style_computer",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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line_editor = add_menus(line_editor, engine_reference, stack, config).unwrap_or_else(|e| {
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let working_set = StateWorkingSet::new(engine_state);
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report_error(&working_set, &e);
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Reedline::create()
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});
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perf(
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"reedline menus",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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let buffer_editor = if !config.buffer_editor.is_empty() {
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Some(config.buffer_editor.clone())
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} else {
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stack
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.get_env_var(engine_state, "EDITOR")
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.map(|v| v.as_string().unwrap_or_default())
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.filter(|v| !v.is_empty())
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.or_else(|| {
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stack
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.get_env_var(engine_state, "VISUAL")
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.map(|v| v.as_string().unwrap_or_default())
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.filter(|v| !v.is_empty())
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})
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};
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line_editor = if let Some(buffer_editor) = buffer_editor {
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line_editor.with_buffer_editor(buffer_editor, "nu".into())
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} else {
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line_editor
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};
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perf(
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"reedline buffer_editor",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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if config.sync_history_on_enter {
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if let Err(e) = line_editor.sync_history() {
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warn!("Failed to sync history: {}", e);
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}
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}
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perf(
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"sync_history",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
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start_time = std::time::Instant::now();
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// Changing the line editor based on the found keybindings
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line_editor = match create_keybindings(config) {
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Ok(keybindings) => match keybindings {
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KeybindingsMode::Emacs(keybindings) => {
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let edit_mode = Box::new(Emacs::new(keybindings));
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line_editor.with_edit_mode(edit_mode)
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}
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KeybindingsMode::Vi {
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insert_keybindings,
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normal_keybindings,
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} => {
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let edit_mode = Box::new(Vi::new(insert_keybindings, normal_keybindings));
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line_editor.with_edit_mode(edit_mode)
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}
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},
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Err(e) => {
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let working_set = StateWorkingSet::new(engine_state);
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report_error(&working_set, &e);
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line_editor
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}
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};
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perf(
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"keybindings",
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start_time,
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file!(),
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line!(),
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column!(),
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use_color,
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);
|
|
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start_time = std::time::Instant::now();
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// Right before we start our prompt and take input from the user,
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// fire the "pre_prompt" hook
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if let Some(hook) = config.hooks.pre_prompt.clone() {
|
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if let Err(err) = eval_hook(engine_state, stack, None, vec![], &hook) {
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report_error_new(engine_state, &err);
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}
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}
|
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perf(
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"pre-prompt hook",
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start_time,
|
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file!(),
|
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line!(),
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column!(),
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use_color,
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);
|
|
|
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start_time = std::time::Instant::now();
|
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// Next, check all the environment variables they ask for
|
|
// fire the "env_change" hook
|
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let config = engine_state.get_config();
|
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if let Err(error) =
|
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eval_env_change_hook(config.hooks.env_change.clone(), engine_state, stack)
|
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{
|
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report_error_new(engine_state, &error)
|
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}
|
|
perf(
|
|
"env-change hook",
|
|
start_time,
|
|
file!(),
|
|
line!(),
|
|
column!(),
|
|
use_color,
|
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);
|
|
|
|
start_time = std::time::Instant::now();
|
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let config = engine_state.get_config();
|
|
let prompt = prompt_update::update_prompt(config, engine_state, stack, &mut nu_prompt);
|
|
perf(
|
|
"update_prompt",
|
|
start_time,
|
|
file!(),
|
|
line!(),
|
|
column!(),
|
|
use_color,
|
|
);
|
|
|
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entry_num += 1;
|
|
|
|
if entry_num == 1 && show_banner {
|
|
println!(
|
|
"Startup Time: {}",
|
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format_duration(entire_start_time.elapsed().as_nanos() as i64)
|
|
);
|
|
}
|
|
|
|
start_time = std::time::Instant::now();
|
|
let input = line_editor.read_line(prompt);
|
|
let shell_integration = config.shell_integration;
|
|
|
|
match input {
|
|
Ok(Signal::Success(s)) => {
|
|
let hostname = sys.host_name();
|
|
let history_supports_meta =
|
|
matches!(config.history_file_format, HistoryFileFormat::Sqlite);
|
|
if history_supports_meta && !s.is_empty() && line_editor.has_last_command_context()
|
|
{
|
|
line_editor
|
|
.update_last_command_context(&|mut c| {
|
|
c.start_timestamp = Some(chrono::Utc::now());
|
|
c.hostname = hostname.clone();
|
|
|
|
c.cwd = Some(StateWorkingSet::new(engine_state).get_cwd());
|
|
c
|
|
})
|
|
.into_diagnostic()?; // todo: don't stop repl if error here?
|
|
}
|
|
|
|
engine_state
|
|
.repl_buffer_state
|
|
.lock()
|
|
.expect("repl buffer state mutex")
|
|
.replace(line_editor.current_buffer_contents().to_string());
|
|
|
|
// Right before we start running the code the user gave us,
|
|
// fire the "pre_execution" hook
|
|
if let Some(hook) = config.hooks.pre_execution.clone() {
|
|
if let Err(err) = eval_hook(engine_state, stack, None, vec![], &hook) {
|
|
report_error_new(engine_state, &err);
|
|
}
|
|
}
|
|
|
|
if shell_integration {
|
|
run_ansi_sequence(PRE_EXECUTE_MARKER)?;
|
|
}
|
|
|
|
let start_time = Instant::now();
|
|
let tokens = lex(s.as_bytes(), 0, &[], &[], false);
|
|
// Check if this is a single call to a directory, if so auto-cd
|
|
let cwd = nu_engine::env::current_dir_str(engine_state, stack)?;
|
|
|
|
let mut orig = s.clone();
|
|
if orig.starts_with('`') {
|
|
orig = trim_quotes_str(&orig).to_string()
|
|
}
|
|
|
|
let path = nu_path::expand_path_with(&orig, &cwd);
|
|
|
|
if looks_like_path(&orig) && path.is_dir() && tokens.0.len() == 1 {
|
|
// We have an auto-cd
|
|
let (path, span) = {
|
|
if !path.exists() {
|
|
let working_set = StateWorkingSet::new(engine_state);
|
|
|
|
report_error(
|
|
&working_set,
|
|
&ShellError::DirectoryNotFound(tokens.0[0].span, None),
|
|
);
|
|
}
|
|
let path = nu_path::canonicalize_with(path, &cwd)
|
|
.expect("internal error: cannot canonicalize known path");
|
|
(path.to_string_lossy().to_string(), tokens.0[0].span)
|
|
};
|
|
|
|
stack.add_env_var(
|
|
"OLDPWD".into(),
|
|
Value::String {
|
|
val: cwd.clone(),
|
|
span: Span::unknown(),
|
|
},
|
|
);
|
|
|
|
//FIXME: this only changes the current scope, but instead this environment variable
|
|
//should probably be a block that loads the information from the state in the overlay
|
|
stack.add_env_var(
|
|
"PWD".into(),
|
|
Value::String {
|
|
val: path.clone(),
|
|
span: Span::unknown(),
|
|
},
|
|
);
|
|
let cwd = Value::String { val: cwd, span };
|
|
|
|
let shells = stack.get_env_var(engine_state, "NUSHELL_SHELLS");
|
|
let mut shells = if let Some(v) = shells {
|
|
v.as_list()
|
|
.map(|x| x.to_vec())
|
|
.unwrap_or_else(|_| vec![cwd])
|
|
} else {
|
|
vec![cwd]
|
|
};
|
|
|
|
let current_shell = stack.get_env_var(engine_state, "NUSHELL_CURRENT_SHELL");
|
|
let current_shell = if let Some(v) = current_shell {
|
|
v.as_integer().unwrap_or_default() as usize
|
|
} else {
|
|
0
|
|
};
|
|
|
|
let last_shell = stack.get_env_var(engine_state, "NUSHELL_LAST_SHELL");
|
|
let last_shell = if let Some(v) = last_shell {
|
|
v.as_integer().unwrap_or_default() as usize
|
|
} else {
|
|
0
|
|
};
|
|
|
|
shells[current_shell] = Value::String { val: path, span };
|
|
|
|
stack.add_env_var("NUSHELL_SHELLS".into(), Value::List { vals: shells, span });
|
|
stack.add_env_var(
|
|
"NUSHELL_LAST_SHELL".into(),
|
|
Value::Int {
|
|
val: last_shell as i64,
|
|
span,
|
|
},
|
|
);
|
|
} else if !s.trim().is_empty() {
|
|
trace!("eval source: {}", s);
|
|
|
|
eval_source(
|
|
engine_state,
|
|
stack,
|
|
s.as_bytes(),
|
|
&format!("entry #{entry_num}"),
|
|
PipelineData::empty(),
|
|
false,
|
|
);
|
|
}
|
|
let cmd_duration = start_time.elapsed();
|
|
|
|
stack.add_env_var(
|
|
"CMD_DURATION_MS".into(),
|
|
Value::String {
|
|
val: format!("{}", cmd_duration.as_millis()),
|
|
span: Span::unknown(),
|
|
},
|
|
);
|
|
|
|
if history_supports_meta && !s.is_empty() && line_editor.has_last_command_context()
|
|
{
|
|
line_editor
|
|
.update_last_command_context(&|mut c| {
|
|
c.duration = Some(cmd_duration);
|
|
c.exit_status = stack
|
|
.get_env_var(engine_state, "LAST_EXIT_CODE")
|
|
.and_then(|e| e.as_i64().ok());
|
|
c
|
|
})
|
|
.into_diagnostic()?; // todo: don't stop repl if error here?
|
|
}
|
|
|
|
if shell_integration {
|
|
run_ansi_sequence(&get_command_finished_marker(stack, engine_state))?;
|
|
if let Some(cwd) = stack.get_env_var(engine_state, "PWD") {
|
|
let path = cwd.as_string()?;
|
|
|
|
// Communicate the path as OSC 7 (often used for spawning new tabs in the same dir)
|
|
run_ansi_sequence(&format!(
|
|
"\x1b]7;file://{}{}{}\x1b\\",
|
|
percent_encoding::utf8_percent_encode(
|
|
&hostname.unwrap_or_else(|| "localhost".to_string()),
|
|
percent_encoding::CONTROLS
|
|
),
|
|
if path.starts_with('/') { "" } else { "/" },
|
|
percent_encoding::utf8_percent_encode(
|
|
&path,
|
|
percent_encoding::CONTROLS
|
|
)
|
|
))?;
|
|
|
|
// Try to abbreviate string for windows title
|
|
let maybe_abbrev_path = if let Some(p) = nu_path::home_dir() {
|
|
path.replace(&p.as_path().display().to_string(), "~")
|
|
} else {
|
|
path
|
|
};
|
|
|
|
// Set window title too
|
|
// https://tldp.org/HOWTO/Xterm-Title-3.html
|
|
// ESC]0;stringBEL -- Set icon name and window title to string
|
|
// ESC]1;stringBEL -- Set icon name to string
|
|
// ESC]2;stringBEL -- Set window title to string
|
|
run_ansi_sequence(&format!("\x1b]2;{maybe_abbrev_path}\x07"))?;
|
|
}
|
|
run_ansi_sequence(RESET_APPLICATION_MODE)?;
|
|
}
|
|
|
|
let mut ops = engine_state
|
|
.repl_operation_queue
|
|
.lock()
|
|
.expect("repl op queue mutex");
|
|
while let Some(op) = ops.pop_front() {
|
|
match op {
|
|
ReplOperation::Append(s) => line_editor.run_edit_commands(&[
|
|
EditCommand::MoveToEnd,
|
|
EditCommand::InsertString(s),
|
|
]),
|
|
ReplOperation::Insert(s) => {
|
|
line_editor.run_edit_commands(&[EditCommand::InsertString(s)])
|
|
}
|
|
ReplOperation::Replace(s) => line_editor
|
|
.run_edit_commands(&[EditCommand::Clear, EditCommand::InsertString(s)]),
|
|
}
|
|
}
|
|
}
|
|
Ok(Signal::CtrlC) => {
|
|
// `Reedline` clears the line content. New prompt is shown
|
|
if shell_integration {
|
|
run_ansi_sequence(&get_command_finished_marker(stack, engine_state))?;
|
|
}
|
|
}
|
|
Ok(Signal::CtrlD) => {
|
|
// When exiting clear to a new line
|
|
if shell_integration {
|
|
run_ansi_sequence(&get_command_finished_marker(stack, engine_state))?;
|
|
}
|
|
println!();
|
|
break;
|
|
}
|
|
Err(err) => {
|
|
let message = err.to_string();
|
|
if !message.contains("duration") {
|
|
eprintln!("Error: {err:?}");
|
|
// TODO: Identify possible error cases where a hard failure is preferable
|
|
// Ignoring and reporting could hide bigger problems
|
|
// e.g. https://github.com/nushell/nushell/issues/6452
|
|
// Alternatively only allow that expected failures let the REPL loop
|
|
}
|
|
if shell_integration {
|
|
run_ansi_sequence(&get_command_finished_marker(stack, engine_state))?;
|
|
}
|
|
}
|
|
}
|
|
perf(
|
|
"processing line editor input",
|
|
start_time,
|
|
file!(),
|
|
line!(),
|
|
column!(),
|
|
use_color,
|
|
);
|
|
|
|
perf(
|
|
"finished repl loop",
|
|
loop_start_time,
|
|
file!(),
|
|
line!(),
|
|
column!(),
|
|
use_color,
|
|
);
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn map_nucursorshape_to_cursorshape(shape: NuCursorShape) -> CursorShape {
|
|
match shape {
|
|
NuCursorShape::Block => CursorShape::Block,
|
|
NuCursorShape::UnderScore => CursorShape::UnderScore,
|
|
NuCursorShape::Line => CursorShape::Line,
|
|
}
|
|
}
|
|
|
|
fn get_banner(engine_state: &mut EngineState, stack: &mut Stack) -> String {
|
|
let age = match eval_string_with_input(
|
|
engine_state,
|
|
stack,
|
|
None,
|
|
"(date now) - ('2019-05-10 09:59:12-0700' | into datetime)",
|
|
) {
|
|
Ok(Value::Duration { val, .. }) => format_duration(val),
|
|
_ => "".to_string(),
|
|
};
|
|
|
|
let banner = format!(
|
|
r#"{} __ ,
|
|
{} .--()°'.' {}Welcome to {}Nushell{},
|
|
{}'|, . ,' {}based on the {}nu{} language,
|
|
{} !_-(_\ {}where all data is structured!
|
|
|
|
Please join our {}Discord{} community at {}https://discord.gg/NtAbbGn{}
|
|
Our {}GitHub{} repository is at {}https://github.com/nushell/nushell{}
|
|
Our {}Documentation{} is located at {}http://nushell.sh{}
|
|
{}Tweet{} us at {}@nu_shell{}
|
|
|
|
It's been this long since {}Nushell{}'s first commit:
|
|
{}{}
|
|
"#,
|
|
"\x1b[32m", //start line 1 green
|
|
"\x1b[32m", //start line 2
|
|
"\x1b[0m", //before welcome
|
|
"\x1b[32m", //before nushell
|
|
"\x1b[0m", //after nushell
|
|
"\x1b[32m", //start line 3
|
|
"\x1b[0m", //before based
|
|
"\x1b[32m", //before nu
|
|
"\x1b[0m", //after nu
|
|
"\x1b[32m", //start line 4
|
|
"\x1b[0m", //before where
|
|
"\x1b[35m", //before Discord purple
|
|
"\x1b[0m", //after Discord
|
|
"\x1b[35m", //before Discord URL
|
|
"\x1b[0m", //after Discord URL
|
|
"\x1b[1;32m", //before GitHub green_bold
|
|
"\x1b[0m", //after GitHub
|
|
"\x1b[1;32m", //before GitHub URL
|
|
"\x1b[0m", //after GitHub URL
|
|
"\x1b[32m", //before Documentation
|
|
"\x1b[0m", //after Documentation
|
|
"\x1b[32m", //before Documentation URL
|
|
"\x1b[0m", //after Documentation URL
|
|
"\x1b[36m", //before Tweet blue
|
|
"\x1b[0m", //after Tweet
|
|
"\x1b[1;36m", //before @nu_shell cyan_bold
|
|
"\x1b[0m", //after @nu_shell
|
|
"\x1b[32m", //before Nushell
|
|
"\x1b[0m", //after Nushell
|
|
age,
|
|
"\x1b[0m", //after banner disable
|
|
);
|
|
|
|
banner
|
|
}
|
|
|
|
// Taken from Nana's simple_eval
|
|
/// Evaluate a block of Nu code, optionally with input.
|
|
/// For example, source="$in * 2" will multiply the value in input by 2.
|
|
pub fn eval_string_with_input(
|
|
engine_state: &mut EngineState,
|
|
stack: &mut Stack,
|
|
input: Option<Value>,
|
|
source: &str,
|
|
) -> Result<Value, ShellError> {
|
|
let (block, delta) = {
|
|
let mut working_set = StateWorkingSet::new(engine_state);
|
|
let (output, _) = parse(&mut working_set, None, source.as_bytes(), false, &[]);
|
|
|
|
(output, working_set.render())
|
|
};
|
|
|
|
engine_state.merge_delta(delta)?;
|
|
|
|
let input_as_pipeline_data = match input {
|
|
Some(input) => PipelineData::Value(input, None),
|
|
None => PipelineData::empty(),
|
|
};
|
|
|
|
eval_block(
|
|
engine_state,
|
|
stack,
|
|
&block,
|
|
input_as_pipeline_data,
|
|
false,
|
|
true,
|
|
)
|
|
.map(|x| x.into_value(Span::unknown()))
|
|
}
|
|
|
|
pub fn get_command_finished_marker(stack: &Stack, engine_state: &EngineState) -> String {
|
|
let exit_code = stack
|
|
.get_env_var(engine_state, "LAST_EXIT_CODE")
|
|
.and_then(|e| e.as_i64().ok());
|
|
|
|
format!("\x1b]133;D;{}\x1b\\", exit_code.unwrap_or(0))
|
|
}
|
|
|
|
pub fn eval_env_change_hook(
|
|
env_change_hook: Option<Value>,
|
|
engine_state: &mut EngineState,
|
|
stack: &mut Stack,
|
|
) -> Result<(), ShellError> {
|
|
if let Some(hook) = env_change_hook {
|
|
match hook {
|
|
Value::Record {
|
|
cols: env_names,
|
|
vals: hook_values,
|
|
..
|
|
} => {
|
|
for (env_name, hook_value) in env_names.iter().zip(hook_values.iter()) {
|
|
let before = engine_state
|
|
.previous_env_vars
|
|
.get(env_name)
|
|
.cloned()
|
|
.unwrap_or_default();
|
|
|
|
let after = stack
|
|
.get_env_var(engine_state, env_name)
|
|
.unwrap_or_default();
|
|
|
|
if before != after {
|
|
eval_hook(
|
|
engine_state,
|
|
stack,
|
|
None,
|
|
vec![("$before".into(), before), ("$after".into(), after.clone())],
|
|
hook_value,
|
|
)?;
|
|
|
|
engine_state
|
|
.previous_env_vars
|
|
.insert(env_name.to_string(), after);
|
|
}
|
|
}
|
|
}
|
|
x => {
|
|
return Err(ShellError::TypeMismatch(
|
|
"record for the 'env_change' hook".to_string(),
|
|
x.span()?,
|
|
));
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub fn eval_hook(
|
|
engine_state: &mut EngineState,
|
|
stack: &mut Stack,
|
|
input: Option<PipelineData>,
|
|
arguments: Vec<(String, Value)>,
|
|
value: &Value,
|
|
) -> Result<PipelineData, ShellError> {
|
|
let value_span = value.span()?;
|
|
|
|
// Hooks can optionally be a record in this form:
|
|
// {
|
|
// condition: {|before, after| ... } # block that evaluates to true/false
|
|
// code: # block or a string
|
|
// }
|
|
// The condition block will be run to check whether the main hook (in `code`) should be run.
|
|
// If it returns true (the default if a condition block is not specified), the hook should be run.
|
|
let condition_path = PathMember::String {
|
|
val: "condition".to_string(),
|
|
span: value_span,
|
|
};
|
|
let mut output = PipelineData::empty();
|
|
|
|
let code_path = PathMember::String {
|
|
val: "code".to_string(),
|
|
span: value_span,
|
|
};
|
|
|
|
match value {
|
|
Value::List { vals, .. } => {
|
|
for val in vals {
|
|
eval_hook(engine_state, stack, None, arguments.clone(), val)?;
|
|
}
|
|
}
|
|
Value::Record { .. } => {
|
|
let do_run_hook = if let Ok(condition) =
|
|
value
|
|
.clone()
|
|
.follow_cell_path(&[condition_path], false, false)
|
|
{
|
|
match condition {
|
|
Value::Block {
|
|
val: block_id,
|
|
span: block_span,
|
|
..
|
|
}
|
|
| Value::Closure {
|
|
val: block_id,
|
|
span: block_span,
|
|
..
|
|
} => {
|
|
match run_hook_block(
|
|
engine_state,
|
|
stack,
|
|
block_id,
|
|
None,
|
|
arguments.clone(),
|
|
block_span,
|
|
) {
|
|
Ok(pipeline_data) => {
|
|
if let PipelineData::Value(Value::Bool { val, .. }, ..) =
|
|
pipeline_data
|
|
{
|
|
val
|
|
} else {
|
|
return Err(ShellError::UnsupportedConfigValue(
|
|
"boolean output".to_string(),
|
|
"other PipelineData variant".to_string(),
|
|
block_span,
|
|
));
|
|
}
|
|
}
|
|
Err(err) => {
|
|
return Err(err);
|
|
}
|
|
}
|
|
}
|
|
other => {
|
|
return Err(ShellError::UnsupportedConfigValue(
|
|
"block".to_string(),
|
|
format!("{}", other.get_type()),
|
|
other.span()?,
|
|
));
|
|
}
|
|
}
|
|
} else {
|
|
// always run the hook
|
|
true
|
|
};
|
|
|
|
if do_run_hook {
|
|
match value.clone().follow_cell_path(&[code_path], false, false)? {
|
|
Value::String {
|
|
val,
|
|
span: source_span,
|
|
} => {
|
|
let (block, delta, vars) = {
|
|
let mut working_set = StateWorkingSet::new(engine_state);
|
|
|
|
let mut vars: Vec<(VarId, Value)> = vec![];
|
|
|
|
for (name, val) in arguments {
|
|
let var_id = working_set.add_variable(
|
|
name.as_bytes().to_vec(),
|
|
val.span()?,
|
|
Type::Any,
|
|
false,
|
|
);
|
|
|
|
vars.push((var_id, val));
|
|
}
|
|
|
|
let (output, err) =
|
|
parse(&mut working_set, Some("hook"), val.as_bytes(), false, &[]);
|
|
if let Some(err) = err {
|
|
report_error(&working_set, &err);
|
|
|
|
return Err(ShellError::UnsupportedConfigValue(
|
|
"valid source code".into(),
|
|
"source code with syntax errors".into(),
|
|
source_span,
|
|
));
|
|
}
|
|
|
|
(output, working_set.render(), vars)
|
|
};
|
|
|
|
engine_state.merge_delta(delta)?;
|
|
let input = PipelineData::empty();
|
|
|
|
let var_ids: Vec<VarId> = vars
|
|
.into_iter()
|
|
.map(|(var_id, val)| {
|
|
stack.add_var(var_id, val);
|
|
var_id
|
|
})
|
|
.collect();
|
|
|
|
match eval_block(engine_state, stack, &block, input, false, false) {
|
|
Ok(pipeline_data) => {
|
|
output = pipeline_data;
|
|
}
|
|
Err(err) => {
|
|
report_error_new(engine_state, &err);
|
|
}
|
|
}
|
|
|
|
for var_id in var_ids.iter() {
|
|
stack.vars.remove(var_id);
|
|
}
|
|
}
|
|
Value::Block {
|
|
val: block_id,
|
|
span: block_span,
|
|
..
|
|
} => {
|
|
run_hook_block(
|
|
engine_state,
|
|
stack,
|
|
block_id,
|
|
input,
|
|
arguments,
|
|
block_span,
|
|
)?;
|
|
}
|
|
Value::Closure {
|
|
val: block_id,
|
|
span: block_span,
|
|
..
|
|
} => {
|
|
run_hook_block(
|
|
engine_state,
|
|
stack,
|
|
block_id,
|
|
input,
|
|
arguments,
|
|
block_span,
|
|
)?;
|
|
}
|
|
other => {
|
|
return Err(ShellError::UnsupportedConfigValue(
|
|
"block or string".to_string(),
|
|
format!("{}", other.get_type()),
|
|
other.span()?,
|
|
));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Value::Block {
|
|
val: block_id,
|
|
span: block_span,
|
|
..
|
|
} => {
|
|
output = run_hook_block(
|
|
engine_state,
|
|
stack,
|
|
*block_id,
|
|
input,
|
|
arguments,
|
|
*block_span,
|
|
)?;
|
|
}
|
|
Value::Closure {
|
|
val: block_id,
|
|
span: block_span,
|
|
..
|
|
} => {
|
|
output = run_hook_block(
|
|
engine_state,
|
|
stack,
|
|
*block_id,
|
|
input,
|
|
arguments,
|
|
*block_span,
|
|
)?;
|
|
}
|
|
other => {
|
|
return Err(ShellError::UnsupportedConfigValue(
|
|
"block, record, or list of records".into(),
|
|
format!("{}", other.get_type()),
|
|
other.span()?,
|
|
));
|
|
}
|
|
}
|
|
|
|
let cwd = get_guaranteed_cwd(engine_state, stack);
|
|
engine_state.merge_env(stack, cwd)?;
|
|
|
|
Ok(output)
|
|
}
|
|
|
|
fn run_hook_block(
|
|
engine_state: &EngineState,
|
|
stack: &mut Stack,
|
|
block_id: BlockId,
|
|
optional_input: Option<PipelineData>,
|
|
arguments: Vec<(String, Value)>,
|
|
span: Span,
|
|
) -> Result<PipelineData, ShellError> {
|
|
let block = engine_state.get_block(block_id);
|
|
|
|
let input = optional_input.unwrap_or_else(PipelineData::empty);
|
|
|
|
let mut callee_stack = stack.gather_captures(&block.captures);
|
|
|
|
for (idx, PositionalArg { var_id, .. }) in
|
|
block.signature.required_positional.iter().enumerate()
|
|
{
|
|
if let Some(var_id) = var_id {
|
|
if let Some(arg) = arguments.get(idx) {
|
|
callee_stack.add_var(*var_id, arg.1.clone())
|
|
} else {
|
|
return Err(ShellError::IncompatibleParametersSingle(
|
|
"This hook block has too many parameters".into(),
|
|
span,
|
|
));
|
|
}
|
|
}
|
|
}
|
|
|
|
let pipeline_data =
|
|
eval_block_with_early_return(engine_state, &mut callee_stack, block, input, false, false)?;
|
|
|
|
if let PipelineData::Value(Value::Error { error }, _) = pipeline_data {
|
|
return Err(error);
|
|
}
|
|
|
|
// If all went fine, preserve the environment of the called block
|
|
let caller_env_vars = stack.get_env_var_names(engine_state);
|
|
|
|
// remove env vars that are present in the caller but not in the callee
|
|
// (the callee hid them)
|
|
for var in caller_env_vars.iter() {
|
|
if !callee_stack.has_env_var(engine_state, var) {
|
|
stack.remove_env_var(engine_state, var);
|
|
}
|
|
}
|
|
|
|
// add new env vars from callee to caller
|
|
for (var, value) in callee_stack.get_stack_env_vars() {
|
|
stack.add_env_var(var, value);
|
|
}
|
|
Ok(pipeline_data)
|
|
}
|
|
|
|
fn run_ansi_sequence(seq: &str) -> Result<(), ShellError> {
|
|
io::stdout().write_all(seq.as_bytes()).map_err(|e| {
|
|
ShellError::GenericError(
|
|
"Error writing ansi sequence".into(),
|
|
e.to_string(),
|
|
Some(Span::unknown()),
|
|
None,
|
|
Vec::new(),
|
|
)
|
|
})?;
|
|
io::stdout().flush().map_err(|e| {
|
|
ShellError::GenericError(
|
|
"Error flushing stdio".into(),
|
|
e.to_string(),
|
|
Some(Span::unknown()),
|
|
None,
|
|
Vec::new(),
|
|
)
|
|
})
|
|
}
|
|
|
|
// Absolute paths with a drive letter, like 'C:', 'D:\', 'E:\foo'
|
|
#[cfg(windows)]
|
|
static DRIVE_PATH_REGEX: once_cell::sync::Lazy<fancy_regex::Regex> =
|
|
once_cell::sync::Lazy::new(|| {
|
|
fancy_regex::Regex::new(r"^[a-zA-Z]:[/\\]?").expect("Internal error: regex creation")
|
|
});
|
|
|
|
// A best-effort "does this string look kinda like a path?" function to determine whether to auto-cd
|
|
fn looks_like_path(orig: &str) -> bool {
|
|
#[cfg(windows)]
|
|
{
|
|
if DRIVE_PATH_REGEX.is_match(orig).unwrap_or(false) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
orig.starts_with('.')
|
|
|| orig.starts_with('~')
|
|
|| orig.starts_with('/')
|
|
|| orig.starts_with('\\')
|
|
}
|
|
|
|
#[test]
|
|
fn looks_like_path_windows_drive_path_works() {
|
|
let on_windows = cfg!(windows);
|
|
assert_eq!(looks_like_path("C:"), on_windows);
|
|
assert_eq!(looks_like_path("D:\\"), on_windows);
|
|
assert_eq!(looks_like_path("E:/"), on_windows);
|
|
assert_eq!(looks_like_path("F:\\some_dir"), on_windows);
|
|
assert_eq!(looks_like_path("G:/some_dir"), on_windows);
|
|
}
|