Add dist script to remove .git folders from subprojects (#1998)

meson.build

@@ -810,6 +810,9 @@ if cli_enabled
   )
 endif
 
+meson_dist_script = files('sys/meson_dist_script.py')
+meson.add_dist_script(meson_dist_script)
+
 summary({
   'prefix': rizin_prefix,
   'bindir': rizin_bindir,

sys/meson_dist_script.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+#
+# SPDX-FileCopyrightText: 2021 ret2libc <sirmy15@gmail.com>
+# SPDX-License-Identifier: LGPL-3.0-only
+#
+# Script used by meson during the `meson dist` step to create a src tarball
+# without .git directories for subprojects
+
+import os
+import shutil
+
+
+def traverse_dir(d):
+    for i in os.listdir(d):
+        # ignore . and ..
+        if i in (".", ".."):
+            continue
+
+        fulli = os.path.abspath(os.path.join(d, i))
+        # avoid possible loops
+        if fulli == d:
+            continue
+
+        if i == ".git":
+            shutil.rmtree(fulli)
+        elif os.path.isdir(fulli):
+            traverse_dir(fulli)
+
+
+if __name__ == "__main__":
+    dist_dir = os.path.abspath(os.environ["MESON_DIST_ROOT"])
+    traverse_dir(dist_dir)