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Merge pull request #5016 from epage/export
fix(builder): Re-export anstyle for easy access
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//! Terminal [`Styles`] for help and error output | ||
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pub use anstyle::*; | ||
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/// Terminal styling definitions | ||
/// | ||
/// See also [`Command::styles`][crate::Command::styles]. | ||
/// | ||
/// # Example | ||
/// | ||
/// clap v3 styling | ||
/// ```rust | ||
/// # #[cfg(feature = "unstable-styles")] { | ||
/// # use clap_builder as clap; | ||
/// # use clap::builder::styling::*; | ||
/// let styles = Styles::styled() | ||
/// .header(AnsiColor::Yellow.on_default()) | ||
/// .usage(AnsiColor::Green.on_default()) | ||
/// .literal(AnsiColor::Green.on_default()) | ||
/// .placeholder(AnsiColor::Green.on_default()); | ||
/// # } | ||
/// ``` | ||
#[derive(Clone, Debug)] | ||
#[allow(missing_copy_implementations)] // Large enough type that I want an explicit `clone()` for now | ||
pub struct Styles { | ||
header: anstyle::Style, | ||
error: anstyle::Style, | ||
usage: anstyle::Style, | ||
literal: anstyle::Style, | ||
placeholder: anstyle::Style, | ||
valid: anstyle::Style, | ||
invalid: anstyle::Style, | ||
} | ||
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impl Styles { | ||
/// No terminal styling | ||
pub const fn plain() -> Self { | ||
Self { | ||
header: anstyle::Style::new(), | ||
error: anstyle::Style::new(), | ||
usage: anstyle::Style::new(), | ||
literal: anstyle::Style::new(), | ||
placeholder: anstyle::Style::new(), | ||
valid: anstyle::Style::new(), | ||
invalid: anstyle::Style::new(), | ||
} | ||
} | ||
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/// Default terminal styling | ||
pub const fn styled() -> Self { | ||
#[cfg(feature = "color")] | ||
{ | ||
Self { | ||
header: anstyle::Style::new().bold().underline(), | ||
error: anstyle::Style::new() | ||
.fg_color(Some(anstyle::Color::Ansi(anstyle::AnsiColor::Red))) | ||
.bold(), | ||
usage: anstyle::Style::new().bold().underline(), | ||
literal: anstyle::Style::new().bold(), | ||
placeholder: anstyle::Style::new(), | ||
valid: anstyle::Style::new() | ||
.fg_color(Some(anstyle::Color::Ansi(anstyle::AnsiColor::Green))), | ||
invalid: anstyle::Style::new() | ||
.fg_color(Some(anstyle::Color::Ansi(anstyle::AnsiColor::Yellow))), | ||
} | ||
} | ||
#[cfg(not(feature = "color"))] | ||
{ | ||
Self::plain() | ||
} | ||
} | ||
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/// General Heading style, e.g. [`help_heading`][crate::Arg::help_heading] | ||
#[inline] | ||
pub const fn header(mut self, style: anstyle::Style) -> Self { | ||
self.header = style; | ||
self | ||
} | ||
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/// Error heading | ||
#[inline] | ||
pub const fn error(mut self, style: anstyle::Style) -> Self { | ||
self.error = style; | ||
self | ||
} | ||
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/// Usage heading | ||
#[inline] | ||
pub const fn usage(mut self, style: anstyle::Style) -> Self { | ||
self.usage = style; | ||
self | ||
} | ||
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/// Literal command-line syntax, e.g. `--help` | ||
#[inline] | ||
pub const fn literal(mut self, style: anstyle::Style) -> Self { | ||
self.literal = style; | ||
self | ||
} | ||
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/// Descriptions within command-line syntax, e.g. [`value_name`][crate::Arg::value_name] | ||
#[inline] | ||
pub const fn placeholder(mut self, style: anstyle::Style) -> Self { | ||
self.placeholder = style; | ||
self | ||
} | ||
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/// Highlight suggested usage | ||
#[inline] | ||
pub const fn valid(mut self, style: anstyle::Style) -> Self { | ||
self.valid = style; | ||
self | ||
} | ||
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/// Highlight invalid usage | ||
#[inline] | ||
pub const fn invalid(mut self, style: anstyle::Style) -> Self { | ||
self.invalid = style; | ||
self | ||
} | ||
} | ||
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/// Reflection | ||
impl Styles { | ||
/// General Heading style, e.g. [`help_heading`][crate::Arg::help_heading] | ||
#[inline(always)] | ||
pub const fn get_header(&self) -> &anstyle::Style { | ||
&self.header | ||
} | ||
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/// Error heading | ||
#[inline(always)] | ||
pub const fn get_error(&self) -> &anstyle::Style { | ||
&self.error | ||
} | ||
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/// Usage heading | ||
#[inline(always)] | ||
pub const fn get_usage(&self) -> &anstyle::Style { | ||
&self.usage | ||
} | ||
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/// Literal command-line syntax, e.g. `--help` | ||
#[inline(always)] | ||
pub const fn get_literal(&self) -> &anstyle::Style { | ||
&self.literal | ||
} | ||
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/// Descriptions within command-line syntax, e.g. [`value_name`][crate::Arg::value_name] | ||
#[inline(always)] | ||
pub const fn get_placeholder(&self) -> &anstyle::Style { | ||
&self.placeholder | ||
} | ||
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/// Highlight suggested usage | ||
#[inline(always)] | ||
pub const fn get_valid(&self) -> &anstyle::Style { | ||
&self.valid | ||
} | ||
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/// Highlight invalid usage | ||
#[inline(always)] | ||
pub const fn get_invalid(&self) -> &anstyle::Style { | ||
&self.invalid | ||
} | ||
} | ||
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impl super::AppTag for Styles {} | ||
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impl Default for Styles { | ||
fn default() -> Self { | ||
Self::styled() | ||
} | ||
} | ||
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impl Default for &'_ Styles { | ||
fn default() -> Self { | ||
const STYLES: Styles = Styles::styled(); | ||
&STYLES | ||
} | ||
} |
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