274 lines
6.9 KiB
Rust
274 lines
6.9 KiB
Rust
use std::collections::HashMap;
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use std::fmt::Display;
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use std::path::PathBuf;
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use log::error;
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use serde::{Deserialize, Deserializer};
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use serde_yaml::Value;
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mod bell;
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mod colors;
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mod scrolling;
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use crate::ansi::CursorStyle;
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pub use crate::config::bell::{BellAnimation, BellConfig};
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pub use crate::config::colors::Colors;
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pub use crate::config::scrolling::Scrolling;
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pub const LOG_TARGET_CONFIG: &str = "alacritty_config";
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const MAX_SCROLLBACK_LINES: u32 = 100_000;
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const DEFAULT_CURSOR_THICKNESS: f32 = 0.15;
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pub type MockConfig = Config<HashMap<String, serde_yaml::Value>>;
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/// Top-level config type.
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#[derive(Debug, PartialEq, Default, Deserialize)]
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pub struct Config<T> {
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/// TERM env variable.
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#[serde(default, deserialize_with = "failure_default")]
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pub env: HashMap<String, String>,
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/// Should draw bold text with brighter colors instead of bold font.
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#[serde(default, deserialize_with = "failure_default")]
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draw_bold_text_with_bright_colors: bool,
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#[serde(default, deserialize_with = "failure_default")]
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pub colors: Colors,
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#[serde(default, deserialize_with = "failure_default")]
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pub selection: Selection,
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/// Path to a shell program to run on startup.
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#[serde(default, deserialize_with = "failure_default")]
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pub shell: Option<Program>,
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/// Bell configuration.
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#[serde(default, deserialize_with = "failure_default")]
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bell: BellConfig,
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/// How much scrolling history to keep.
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#[serde(default, deserialize_with = "failure_default")]
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pub scrolling: Scrolling,
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/// Cursor configuration.
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#[serde(default, deserialize_with = "failure_default")]
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pub cursor: Cursor,
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/// Shell startup directory.
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#[serde(default, deserialize_with = "option_explicit_none")]
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pub working_directory: Option<PathBuf>,
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/// Additional configuration options not directly required by the terminal.
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#[serde(flatten)]
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pub ui_config: T,
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/// Remain open after child process exits.
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#[serde(skip)]
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pub hold: bool,
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// TODO: DEPRECATED
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#[cfg(windows)]
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#[serde(default, deserialize_with = "failure_default")]
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pub winpty_backend: bool,
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// TODO: DEPRECATED
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#[serde(default, deserialize_with = "failure_default")]
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pub visual_bell: Option<BellConfig>,
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// TODO: REMOVED
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#[serde(default, deserialize_with = "failure_default")]
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pub tabspaces: Option<usize>,
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}
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impl<T> Config<T> {
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#[inline]
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pub fn draw_bold_text_with_bright_colors(&self) -> bool {
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self.draw_bold_text_with_bright_colors
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}
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#[inline]
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pub fn bell(&self) -> &BellConfig {
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self.visual_bell.as_ref().unwrap_or(&self.bell)
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}
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}
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#[serde(default)]
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#[derive(Deserialize, Default, Clone, Debug, PartialEq, Eq)]
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pub struct Selection {
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#[serde(deserialize_with = "failure_default")]
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semantic_escape_chars: EscapeChars,
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#[serde(deserialize_with = "failure_default")]
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pub save_to_clipboard: bool,
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}
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impl Selection {
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pub fn semantic_escape_chars(&self) -> &str {
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&self.semantic_escape_chars.0
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}
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}
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#[derive(Deserialize, Clone, Debug, PartialEq, Eq)]
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struct EscapeChars(String);
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impl Default for EscapeChars {
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fn default() -> Self {
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EscapeChars(String::from(",│`|:\"' ()[]{}<>\t"))
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}
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}
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#[serde(default)]
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#[derive(Deserialize, Copy, Clone, Debug, PartialEq)]
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pub struct Cursor {
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#[serde(deserialize_with = "failure_default")]
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pub style: CursorStyle,
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#[serde(deserialize_with = "option_explicit_none")]
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pub vi_mode_style: Option<CursorStyle>,
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#[serde(deserialize_with = "deserialize_cursor_thickness")]
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thickness: Percentage,
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#[serde(deserialize_with = "failure_default")]
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unfocused_hollow: DefaultTrueBool,
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}
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impl Cursor {
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#[inline]
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pub fn unfocused_hollow(self) -> bool {
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self.unfocused_hollow.0
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}
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#[inline]
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pub fn thickness(self) -> f64 {
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self.thickness.0 as f64
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}
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}
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impl Default for Cursor {
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fn default() -> Self {
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Self {
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style: Default::default(),
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vi_mode_style: Default::default(),
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thickness: Percentage::new(DEFAULT_CURSOR_THICKNESS),
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unfocused_hollow: Default::default(),
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}
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}
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}
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fn deserialize_cursor_thickness<'a, D>(deserializer: D) -> Result<Percentage, D::Error>
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where
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D: Deserializer<'a>,
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{
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let value = Value::deserialize(deserializer)?;
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match Percentage::deserialize(value) {
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Ok(value) => Ok(value),
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Err(err) => {
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error!(
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target: LOG_TARGET_CONFIG,
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"Problem with config: {}, using default thickness value {}",
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err,
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DEFAULT_CURSOR_THICKNESS
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);
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Ok(Percentage::new(DEFAULT_CURSOR_THICKNESS))
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},
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}
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}
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#[serde(untagged)]
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#[derive(Deserialize, Debug, Clone, PartialEq, Eq)]
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pub enum Program {
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Just(String),
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WithArgs {
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program: String,
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#[serde(default, deserialize_with = "failure_default")]
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args: Vec<String>,
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},
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}
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impl Program {
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pub fn program(&self) -> &str {
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match self {
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Program::Just(program) => program,
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Program::WithArgs { program, .. } => program,
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}
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}
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pub fn args(&self) -> &[String] {
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match self {
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Program::Just(_) => &[],
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Program::WithArgs { args, .. } => args,
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}
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}
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}
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/// Wrapper around f32 that represents a percentage value between 0.0 and 1.0.
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#[derive(Clone, Copy, Debug, PartialEq)]
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pub struct Percentage(f32);
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impl Percentage {
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pub fn new(value: f32) -> Self {
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Percentage(if value < 0.0 {
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0.0
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} else if value > 1.0 {
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1.0
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} else {
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value
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})
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}
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pub fn as_f32(self) -> f32 {
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self.0
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}
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}
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impl Default for Percentage {
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fn default() -> Self {
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Percentage(1.0)
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}
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}
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impl<'a> Deserialize<'a> for Percentage {
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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
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where
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D: Deserializer<'a>,
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{
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Ok(Percentage::new(f32::deserialize(deserializer)?))
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}
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}
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#[derive(Deserialize, Copy, Clone, Debug, PartialEq, Eq)]
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struct DefaultTrueBool(bool);
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impl Default for DefaultTrueBool {
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fn default() -> Self {
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DefaultTrueBool(true)
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}
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}
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fn fallback_default<T, E>(err: E) -> T
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where
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T: Default,
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E: Display,
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{
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error!(target: LOG_TARGET_CONFIG, "Problem with config: {}; using default value", err);
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T::default()
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}
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pub fn failure_default<'a, D, T>(deserializer: D) -> Result<T, D::Error>
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where
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D: Deserializer<'a>,
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T: Deserialize<'a> + Default,
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{
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Ok(T::deserialize(Value::deserialize(deserializer)?).unwrap_or_else(fallback_default))
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}
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pub fn option_explicit_none<'de, T, D>(deserializer: D) -> Result<Option<T>, D::Error>
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where
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D: Deserializer<'de>,
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T: Deserialize<'de> + Default,
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{
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Ok(match Value::deserialize(deserializer)? {
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Value::String(ref value) if value.to_lowercase() == "none" => None,
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value => Some(T::deserialize(value).unwrap_or_else(fallback_default)),
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})
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}
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