1 files changed, 73 insertions, 0 deletions
diff --git a/src/subcommands/show_colors.rs b/src/subcommands/show_colors.rs
new file mode 100644
index 00000000..fd194377
--- /dev/null
+++ b/src/subcommands/show_colors.rs
@@ -0,0 +1,73 @@
+use crate::cli;
+use crate::color;
+use crate::colors;
+use crate::config;
+use crate::delta;
+use crate::git_config;
+use crate::paint;
+use crate::paint::BgShouldFill;
+use crate::style;
+use crate::utils::bat::assets::HighlightingAssets;
+use crate::utils::bat::output::{OutputType, PagingMode};
+
+#[cfg(not(tarpaulin_include))]
+pub fn show_colors() -> std::io::Result<()> {
+    use itertools::Itertools;
+
+    let assets = HighlightingAssets::new();
+    let opt = cli::Opt::from_args_and_git_config(git_config::GitConfig::try_create(), assets);
+    let config = config::Config::from(opt);
+
+    let mut output_type =
+        OutputType::from_mode(PagingMode::QuitIfOneScreen, None, &config).unwrap();
+    let writer = output_type.handle().unwrap();
+
+    let mut painter = paint::Painter::new(writer, &config);
+    painter.set_syntax(Some("ts"));
+    painter.set_highlighter();
+
+    let title_style = ansi_term::Style::new().bold();
+    let mut style = style::Style {
+        is_syntax_highlighted: true,
+        ..style::Style::default()
+    };
+    for (group, color_names) in colors::color_groups().iter().sorted() {
+        writeln!(painter.writer, "\n\n{}\n", title_style.paint(group))?;
+        for (color_name, hex) in color_names {
+            // Two syntax-highlighted lines without background color
+            style.ansi_term_style.background = None;
+            for line in [
+                r#"export function color(): string {{ return "none" }}"#,
+                r#"export function hex(): string {{ return "none" }}"#,
+            ] {
+                painter.syntax_highlight_and_paint_line(
+                    line,
+                    paint::StyleSectionSpecifier::Style(style),
+                    delta::State::HunkZero,
+                    BgShouldFill::default(),
+                )
+            }
+            // Two syntax-highlighted lines with background color
+            let color =
+                color::parse_color(color_name, config.true_color, config.git_config.as_ref())
+                    .unwrap();
+            style.ansi_term_style.background = Some(color);
+            for line in [
+                &format!(
+                    r#"export function color(): string {{ return "{}" }}"#,
+                    color_name
+                ),
+                &format!(r#"export function hex(): string {{ return "{}" }}"#, hex),
+            ] {
+                painter.syntax_highlight_and_paint_line(
+                    line,
+                    paint::StyleSectionSpecifier::Style(style),
+                    delta::State::HunkZero,
+                    BgShouldFill::default(),
+                )
+            }
+            painter.emit()?;
+        }
+    }
+    Ok(())
+}