Start work on formatting options
This commit is contained in:
parent
062cd97609
commit
85ea8ca776
11
src/calc.rs
11
src/calc.rs
@ -333,7 +333,7 @@ impl<'a> Calculator<'a> {
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push: OpArgs::Unary(f),
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})
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}
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fn pop(&mut self) -> CalculatorResult<f64> {
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pub fn pop(&mut self) -> CalculatorResult<f64> {
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let f = self.checked_get(0)?;
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self.direct_state_change(CalculatorStateChange {
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pop: OpArgs::Unary(f),
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@ -341,6 +341,15 @@ impl<'a> Calculator<'a> {
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})?;
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Ok(f)
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}
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pub fn pop_usize(&mut self) -> CalculatorResult<usize> {
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let f = self.checked_get(0)?;
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let ret = usize::from(f as usize);
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self.direct_state_change(CalculatorStateChange {
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pop: OpArgs::Unary(f),
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push: OpArgs::None,
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})?;
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Ok(ret)
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}
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pub fn op(&mut self, op: CalculatorOperation) -> CalculatorResult<()> {
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// Dup is special -- don't actually run it if l needs to be flushed
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if self.flush_l()? {
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106
src/main.rs
106
src/main.rs
@ -27,7 +27,18 @@ struct Dimensions {
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height: u16,
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}
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enum DisplayMode {
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Default(Option<char>),
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Scientific(usize),
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Engineering,
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}
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struct AppSettings {
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display_mode: DisplayMode,
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}
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enum AppState {
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AppSettings,
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Calculator,
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Help,
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}
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@ -37,6 +48,7 @@ struct App<'a> {
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error_msg: Option<String>,
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state: AppState,
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current_macro: Option<char>,
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app_settings: AppSettings,
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}
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impl<'a> Default for App<'a> {
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@ -46,6 +58,9 @@ impl<'a> Default for App<'a> {
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error_msg: None,
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state: AppState::Calculator,
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current_macro: None,
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app_settings: AppSettings {
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display_mode: DisplayMode::Default(None),
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},
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}
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}
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}
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@ -80,13 +95,24 @@ fn main() -> Result<(), Box<dyn Error>> {
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Span::raw("Error: "),
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Span::styled(e, Style::default().add_modifier(Modifier::RAPID_BLINK)),
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],
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(None, AppState::Calculator) => vec![
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(None, AppState::Calculator) => {
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// TODO: There has to be a better way than making strings each time
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let display_mode_str = match &app.app_settings.display_mode {
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DisplayMode::Default(None) => String::from("[d]"),
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DisplayMode::Default(Some(c)) => format!("[d({})]", c),
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DisplayMode::Scientific(p) => format!("[s({})]", p),
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DisplayMode::Engineering => String::from("[e]"),
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};
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vec![
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Span::raw("Press "),
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Span::styled("q", Style::default().add_modifier(Modifier::BOLD)),
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Span::raw(" to exit, "),
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Span::styled("h", Style::default().add_modifier(Modifier::BOLD)),
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Span::raw(" for help"),
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],
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Span::raw(" for help - "),
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Span::raw(display_mode_str),
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]
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}
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(None, _) => vec![
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Span::raw("Press "),
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Span::styled("<esc>", Style::default().add_modifier(Modifier::BOLD)),
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@ -106,7 +132,16 @@ fn main() -> Result<(), Box<dyn Error>> {
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.enumerate()
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.rev()
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.map(|(i, m)| {
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let content = vec![Spans::from(Span::raw(format!("{}: {}", i, m)))];
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let content = vec![Spans::from(Span::raw(
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match &app.app_settings.display_mode {
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DisplayMode::Default(None) => format!("{:>2}: {}", i, *m),
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DisplayMode::Default(Some(c)) => fmt_separated(i, *m, *c),
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DisplayMode::Scientific(precision) => fmt_scientific(i, *m, *precision),
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DisplayMode::Engineering => {
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format!("{:>2}: {}", i, m)
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}
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},
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))];
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ListItem::new(content)
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})
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.collect();
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@ -134,6 +169,22 @@ fn main() -> Result<(), Box<dyn Error>> {
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);
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match (&app.state, app.calculator.get_state()) {
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(AppState::AppSettings, _) => {
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draw_clippy_rect(
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ClippyRectangle {
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title: "App Settings",
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msg: "\
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d => Default\n\
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, => Default (comma separated)\n\
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s => Scientific\n\
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S => Scientific (stack precision)\n\
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e => Engineering\n\
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E => Engineering (stack precision)\n\
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",
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},
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f,
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);
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}
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(AppState::Help, _) => {
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draw_clippy_rect(
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ClippyRectangle {
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@ -248,6 +299,9 @@ fn handle_key(app: &mut App, events: &Events, key: Key) -> CalculatorResult<bool
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Key::Char('h') => {
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app.state = AppState::Help;
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}
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Key::Ctrl('s') => {
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app.state = AppState::AppSettings;
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}
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Key::Char('\n') | Key::Char(' ') => {
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app.calculator.take_input(' ')?;
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}
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@ -265,6 +319,20 @@ fn handle_key(app: &mut App, events: &Events, key: Key) -> CalculatorResult<bool
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}
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_ => {}
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},
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(AppState::AppSettings, _) => match key {
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Key::Esc | Key::Char('q') => {
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app.state = AppState::Calculator;
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app.calculator.cancel()?;
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}
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Key::Char('d') => app.app_settings.display_mode = DisplayMode::Default(None),
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Key::Char(',') => app.app_settings.display_mode = DisplayMode::Default(Some(',')),
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Key::Char('s') => app.app_settings.display_mode = DisplayMode::Scientific(3),
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Key::Char('S') => {
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app.app_settings.display_mode = DisplayMode::Scientific(app.calculator.pop_usize()?)
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}
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Key::Char('e') => app.app_settings.display_mode = DisplayMode::Engineering,
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_ => {}
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},
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(AppState::Help, _) => match key {
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Key::Esc | Key::Char('q') => {
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app.state = AppState::Calculator;
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@ -336,3 +404,33 @@ fn draw_clippy_rect<T: std::io::Write>(c: ClippyRectangle, f: &mut Frame<Termion
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.block(Block::default().borders(Borders::ALL).title(c.title));
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f.render_widget(help_message, area);
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}
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fn fmt_scientific(i: usize, f: f64, precision: usize) -> String {
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let mut ret = format!("{:.precision$e}", f, precision = precision);
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let exp = ret.split_off(ret.find('e').unwrap_or(0));
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let (pow_sign, exp) = if exp.starts_with("e-") {
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('-', &exp[2..])
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} else {
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('+', &exp[1..])
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};
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let sign = if !ret.starts_with('-') { " " } else { "" };
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format!(
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"{:>2}: {}{}e{}{:0>pad$}",
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i,
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sign,
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ret,
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pow_sign,
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exp,
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pad = 2
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)
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}
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fn fmt_separated(i: usize, f: f64, sep: char) -> String {
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let mut ret = f.to_string();
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let start = if ret.starts_with('-') { 1 } else { 0 };
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let end = ret.find('.').unwrap_or(ret.len());
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for i in 0..((end - start).div_euclid(3)) {
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ret.insert(end - start - (i + 1) * 3, sep);
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}
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format!("{:>2}: {}", i, ret)
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}
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