Move gen scripts into their own package

gen/config.py

@@ -0,0 +1,58 @@
+#!./kitty/launcher/kitty +launch
+# License: GPLv3 Copyright: 2021, Kovid Goyal <kovid at kovidgoyal.net>
+
+
+import os
+import re
+import subprocess
+import sys
+from typing import List
+
+from kitty.conf.generate import write_output
+
+
+def patch_color_list(path: str, colors: List[str], name: str, spc: str = '    ') -> None:
+    with open(path, 'r+') as f:
+        raw = f.read()
+        colors = sorted(colors)
+        if path.endswith('.go'):
+            spc = '\t'
+            nraw = re.sub(
+                fr'(// {name}_COLORS_START).+?(\s+// {name}_COLORS_END)',
+                r'\1' + f'\n{spc}' + f'\n{spc}'.join(map(lambda x: f'"{x}":true,', colors)) + r'\2',
+                raw, flags=re.DOTALL | re.MULTILINE)
+        else:
+            nraw = re.sub(
+                fr'(# {name}_COLORS_START).+?(\s+# {name}_COLORS_END)',
+                r'\1' + f'\n{spc}' + f'\n{spc}'.join(map(lambda x: f'{x!r},', colors)) + r'\2',
+                raw, flags=re.DOTALL | re.MULTILINE)
+        if nraw != raw:
+            f.seek(0)
+            f.truncate()
+            f.write(nraw)
+            f.flush()
+            if path.endswith('.go'):
+                subprocess.check_call(['gofmt', '-w', path])
+
+
+def main(args: list[str]=sys.argv) -> None:
+    from kitty.options.definition import definition
+    write_output('kitty', definition)
+    nullable_colors = []
+    all_colors = []
+    for opt in definition.iter_all_options():
+        if callable(opt.parser_func):
+            if opt.parser_func.__name__ in ('to_color_or_none', 'cursor_text_color'):
+                nullable_colors.append(opt.name)
+                all_colors.append(opt.name)
+            elif opt.parser_func.__name__ in ('to_color', 'titlebar_color', 'macos_titlebar_color'):
+                all_colors.append(opt.name)
+    patch_color_list('kitty/rc/set_colors.py', nullable_colors, 'NULLABLE')
+    patch_color_list('tools/cmd/at/set_colors.go', nullable_colors, 'NULLABLE')
+    patch_color_list('tools/themes/collection.go', all_colors, 'ALL')
+
+
+if __name__ == '__main__':
+    import runpy
+    m = runpy.run_path(os.path.dirname(os.path.abspath(__file__)))
+    m['main']([sys.executable, 'config'])