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Copy pathprinter.rs
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177 lines (155 loc) · 5.75 KB
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use std::io::StdoutLock;
use anyhow::Result;
use indicatif::ProgressDrawTarget;
use crate::logging::VerbosityLevel;
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub(crate) struct Printer {
verbosity: VerbosityLevel,
no_progress: bool,
}
impl Printer {
pub(crate) fn new(verbosity: VerbosityLevel, no_progress: bool) -> Self {
Self {
verbosity,
no_progress,
}
}
/// Return the [`ProgressDrawTarget`] for this printer.
pub(crate) fn progress_target(self) -> ProgressDrawTarget {
if self.no_progress {
return ProgressDrawTarget::hidden();
}
match self.verbosity {
VerbosityLevel::Silent => ProgressDrawTarget::hidden(),
VerbosityLevel::Quiet => ProgressDrawTarget::hidden(),
VerbosityLevel::Default => ProgressDrawTarget::stderr(),
// Hide the progress bar when in verbose mode.
// Otherwise, it gets interleaved with log messages.
VerbosityLevel::Verbose => ProgressDrawTarget::hidden(),
VerbosityLevel::ExtraVerbose => ProgressDrawTarget::hidden(),
VerbosityLevel::Trace => ProgressDrawTarget::hidden(),
}
}
/// Return the [`Stdout`] stream for important messages.
///
/// Unlike [`Self::stdout_general`], the returned stream will be enabled when
/// [`VerbosityLevel::Quiet`] is used.
fn stdout_important(self) -> Stdout {
match self.verbosity {
VerbosityLevel::Silent => Stdout::disabled(),
VerbosityLevel::Quiet => Stdout::enabled(),
VerbosityLevel::Default => Stdout::enabled(),
VerbosityLevel::Verbose => Stdout::enabled(),
VerbosityLevel::ExtraVerbose => Stdout::enabled(),
VerbosityLevel::Trace => Stdout::enabled(),
}
}
/// Return the [`Stdout`] stream for general messages.
///
/// The returned stream will be disabled when [`VerbosityLevel::Quiet`] is used.
fn stdout_general(self) -> Stdout {
match self.verbosity {
VerbosityLevel::Silent => Stdout::disabled(),
VerbosityLevel::Quiet => Stdout::disabled(),
VerbosityLevel::Default => Stdout::enabled(),
VerbosityLevel::Verbose => Stdout::enabled(),
VerbosityLevel::ExtraVerbose => Stdout::enabled(),
VerbosityLevel::Trace => Stdout::enabled(),
}
}
/// Return the [`Stdout`] stream for a summary message that was explicitly requested by the
/// user.
///
/// For example, in `ty version` the user has requested the version information and we should
/// display it even if [`VerbosityLevel::Quiet`] is used. Or, in `ty check`, if the
/// `TY_MEMORY_REPORT` variable has been set, we should display the memory report because the
/// user has opted-in to display.
pub(crate) fn stream_for_requested_summary(self) -> Stdout {
self.stdout_important()
}
/// Return the [`Stdout`] stream for a summary message on failure.
///
/// For example, in `ty check`, this would be used for the message indicating the number of
/// diagnostics found. The failure summary should capture information that is not reflected in
/// the exit code.
pub(crate) fn stream_for_failure_summary(self) -> Stdout {
self.stdout_important()
}
/// Return the [`Stdout`] stream for a summary message on success.
///
/// For example, in `ty check`, this would be used for the message indicating that no diagnostic
/// were found. The success summary does not capture important information for users that have
/// opted-in to [`VerbosityLevel::Quiet`].
pub(crate) fn stream_for_success_summary(self) -> Stdout {
self.stdout_general()
}
/// Return the [`Stdout`] stream for detailed messages.
///
/// For example, in `ty check`, this would be used for the diagnostic output.
pub(crate) fn stream_for_details(self) -> Stdout {
self.stdout_general()
}
pub(crate) fn clear_screen() -> Result<()> {
clearscreen::clear()?;
Ok(())
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub(crate) enum StreamStatus {
Enabled,
Disabled,
}
#[derive(Debug)]
pub(crate) struct Stdout {
status: StreamStatus,
lock: Option<StdoutLock<'static>>,
}
impl Stdout {
fn enabled() -> Self {
Self {
status: StreamStatus::Enabled,
lock: None,
}
}
fn disabled() -> Self {
Self {
status: StreamStatus::Disabled,
lock: None,
}
}
pub(crate) fn lock(mut self) -> Self {
match self.status {
StreamStatus::Enabled => {
// Drop the previous lock first, to avoid deadlocking
self.lock.take();
self.lock = Some(std::io::stdout().lock());
}
StreamStatus::Disabled => self.lock = None,
}
self
}
#[inline]
fn with_handle<T>(&mut self, callback: impl FnOnce(&mut dyn std::io::Write) -> T) -> T {
match self.lock.as_mut() {
Some(lock) => callback(lock),
None => callback(&mut std::io::stdout()),
}
}
pub(crate) fn is_enabled(&self) -> bool {
matches!(self.status, StreamStatus::Enabled)
}
}
impl std::io::Write for Stdout {
fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
match self.status {
StreamStatus::Enabled => self.with_handle(|handle| handle.write(buf)),
StreamStatus::Disabled => Ok(buf.len()),
}
}
fn flush(&mut self) -> std::io::Result<()> {
match self.status {
StreamStatus::Enabled => self.with_handle(|handle| handle.flush()),
StreamStatus::Disabled => Ok(()),
}
}
}