98 lines
2.6 KiB
Rust
98 lines
2.6 KiB
Rust
use std::fmt::Write;
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use anyhow::anyhow;
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use serde::Deserialize;
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#[derive(Clone, Debug, Eq, PartialEq, Default, Deserialize)]
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pub struct Keystroke {
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pub ctrl: bool,
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pub alt: bool,
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pub shift: bool,
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pub cmd: bool,
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pub function: bool,
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pub key: String,
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}
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impl Keystroke {
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pub fn parse(source: &str) -> anyhow::Result<Self> {
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let mut ctrl = false;
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let mut alt = false;
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let mut shift = false;
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let mut cmd = false;
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let mut function = false;
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let mut key = None;
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let mut components = source.split('-').peekable();
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while let Some(component) = components.next() {
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match component {
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"ctrl" => ctrl = true,
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"alt" => alt = true,
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"shift" => shift = true,
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"cmd" => cmd = true,
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"fn" => function = true,
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_ => {
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if let Some(component) = components.peek() {
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if component.is_empty() && source.ends_with('-') {
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key = Some(String::from("-"));
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break;
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} else {
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return Err(anyhow!("Invalid keystroke `{}`", source));
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}
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} else {
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key = Some(String::from(component));
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}
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}
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}
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}
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let key = key.ok_or_else(|| anyhow!("Invalid keystroke `{}`", source))?;
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Ok(Keystroke {
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ctrl,
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alt,
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shift,
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cmd,
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function,
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key,
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})
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}
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pub fn modified(&self) -> bool {
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self.ctrl || self.alt || self.shift || self.cmd
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}
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}
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impl std::fmt::Display for Keystroke {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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if self.ctrl {
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f.write_char('^')?;
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}
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if self.alt {
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f.write_char('⎇')?;
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}
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if self.cmd {
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f.write_char('⌘')?;
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}
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if self.shift {
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f.write_char('⇧')?;
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}
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let key = match self.key.as_str() {
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"backspace" => '⌫',
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"up" => '↑',
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"down" => '↓',
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"left" => '←',
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"right" => '→',
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"tab" => '⇥',
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"escape" => '⎋',
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key => {
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if key.len() == 1 {
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key.chars().next().unwrap().to_ascii_uppercase()
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} else {
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return f.write_str(key);
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}
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}
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};
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f.write_char(key)
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}
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}
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