1 files changed, 67 insertions, 0 deletions
diff --git a/syntax-highlight.py b/syntax-highlight.py
new file mode 100755
index 0000000..e7a8ad4
--- /dev/null
+++ b/syntax-highlight.py
@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+"""
+cgit source-filter: syntax highlighting via Pygments (Catppuccin Macchiato).
+
+cgit passes the filename as argv[1] and the file content on stdin.
+Output is HTML written to stdout.
+"""
+
+import sys
+import os
+
+try:
+    from pygments import highlight
+    from pygments.lexers import get_lexer_for_filename, TextLexer
+    from pygments.formatters import HtmlFormatter
+    from pygments.util import ClassNotFound
+    PYGMENTS_AVAILABLE = True
+except ImportError:
+    PYGMENTS_AVAILABLE = False
+
+
+def get_lexer(filename):
+    try:
+        return get_lexer_for_filename(filename, stripnl=False, ensurenl=False)
+    except ClassNotFound:
+        return TextLexer(stripnl=False, ensurenl=False)
+
+
+def main():
+    filename = sys.argv[1] if len(sys.argv) > 1 else ""
+
+    data = sys.stdin.buffer.read()
+
+    # Try UTF-8, fall back to latin-1 to avoid decode errors on binary-ish files
+    try:
+        text = data.decode("utf-8")
+    except UnicodeDecodeError:
+        try:
+            text = data.decode("latin-1")
+        except UnicodeDecodeError:
+            # Give up and emit as plain text
+            sys.stdout.write("<pre>" + data.decode("ascii", errors="replace") + "</pre>")
+            return
+
+    if not PYGMENTS_AVAILABLE or not filename:
+        sys.stdout.write("<pre>" + text.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;") + "</pre>")
+        return
+
+    lexer = get_lexer(filename)
+
+    formatter = HtmlFormatter(
+        style="monokai",       # base style; token colors overridden by CSS
+        nowrap=True,           # no wrapping <div class="highlight">
+        cssclass="highlight",
+        noclasses=False,       # use CSS classes, not inline styles
+    )
+
+    highlighted = highlight(text, lexer, formatter)
+
+    # Wrap in pre so cgit's blob table renders it correctly
+    sys.stdout.write('<pre><code class="highlight">')
+    sys.stdout.write(highlighted)
+    sys.stdout.write("</code></pre>")
+
+
+if __name__ == "__main__":
+    main()