Publish harness and TUI open-source

initial sync from the monorepo

crates/codegen/xai-grok-pager-render/src/syntax.rs

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+//! Syntax highlighting initialization.
+//!
+//! Provides lazily-initialized `Syntect` instances for code highlighting.
+//! Dark themes (GrokNight, TokyoNight) share `grok-night.tmTheme`;
+//! GrokDay uses `grok-day.tmTheme` with deepened colors for light backgrounds.
+
+use std::sync::OnceLock;
+
+pub use xai_grok_markdown::Syntect;
+
+use crate::theme::ThemeKind;
+
+static SYNTECT_GROKNIGHT: OnceLock<Syntect> = OnceLock::new();
+static SYNTECT_TOKYONIGHT: OnceLock<Syntect> = OnceLock::new();
+static SYNTECT_GROKDAY: OnceLock<Syntect> = OnceLock::new();
+
+/// Convert syntect style to ratatui foreground-only style, quantized for terminal color support.
+pub fn syntect_to_ratatui_fg(style: syntect::highlighting::Style) -> ratatui::style::Style {
+    let fg = crate::theme::quantize(ratatui::style::Color::Rgb(
+        style.foreground.r,
+        style.foreground.g,
+        style.foreground.b,
+    ));
+    let mut out = ratatui::style::Style::default().fg(fg);
+    use syntect::highlighting::FontStyle;
+    if style.font_style.contains(FontStyle::BOLD) {
+        out = out.add_modifier(ratatui::style::Modifier::BOLD);
+    }
+    if style.font_style.contains(FontStyle::ITALIC) {
+        out = out.add_modifier(ratatui::style::Modifier::ITALIC);
+    }
+    if style.font_style.contains(FontStyle::UNDERLINE) {
+        out = out.add_modifier(ratatui::style::Modifier::UNDERLINED);
+    }
+    out
+}
+
+/// Highlight a single line of source, falling back to plain text style.
+pub fn highlight_line(
+    text: &str,
+    highlighter: &mut Option<syntect::easy::HighlightLines<'_>>,
+    syntect: &Syntect,
+    fallback: ratatui::style::Style,
+) -> Vec<ratatui::text::Span<'static>> {
+    if let Some(hl) = highlighter.as_mut()
+        && let Ok(ranges) = hl.highlight_line(&format!("{text}\n"), &syntect.syntax_set)
+    {
+        let mut spans = Vec::new();
+        for (style, segment) in ranges {
+            let mut s = segment.to_owned();
+            while s.ends_with('\n') || s.ends_with('\r') {
+                s.pop();
+            }
+            if s.is_empty() {
+                continue;
+            }
+            spans.push(ratatui::text::Span::styled(s, syntect_to_ratatui_fg(style)));
+        }
+        if !spans.is_empty() {
+            return spans;
+        }
+    }
+    vec![ratatui::text::Span::styled(text.to_string(), fallback)]
+}
+
+/// Returns the syntect instance matching the active theme.
+pub fn get_syntect() -> &'static Syntect {
+    match crate::theme::Theme::current_kind() {
+        ThemeKind::GrokNight
+        | ThemeKind::RosePineMoon
+        | ThemeKind::OscuraMidnight
+        | ThemeKind::Auto => SYNTECT_GROKNIGHT
+            .get_or_init(|| Syntect::new(include_bytes!("../assets/grok-night.tmTheme"))),
+        ThemeKind::TokyoNight => SYNTECT_TOKYONIGHT
+            .get_or_init(|| Syntect::new(include_bytes!("../assets/tokyo-night.tmTheme"))),
+        ThemeKind::GrokDay => SYNTECT_GROKDAY
+            .get_or_init(|| Syntect::new(include_bytes!("../assets/grok-day.tmTheme"))),
+    }
+}