1 files changed, 60 insertions, 0 deletions
diff --git a/osx/lipo b/osx/lipo
new file mode 100755
index 0000000..80e658a
--- /dev/null
+++ b/osx/lipo
@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+
+"""Apply lipo recursively to trees.
+"""
+
+import sys
+import os
+import shutil
+import subprocess
+
+# Parse arguments
+import argparse
+
+parser = argparse.ArgumentParser(
+    description=sys.modules[__name__].__doc__,
+    formatter_class=argparse.RawDescriptionHelpFormatter,
+)
+parser.add_argument("output", help="Output tree")
+parser.add_argument("input", help="Input trees", nargs="+")
+options = parser.parse_args()
+output = options.output
+inputs = options.input
+
+
+def ismacho(path):
+    """Check if a file is Mach-O"""
+    fnull = open(os.devnull, "w")
+    try:
+        subprocess.check_call(["lipo", "-info", path], stdout=fnull, stderr=fnull)
+    except subprocess.CalledProcessError:
+        return False
+    return True
+
+
+# Copy
+for root, dirs, files in os.walk(inputs[0]):
+    # Create root directory in output
+    oroot = root[len(inputs[0]) :].lstrip("/")
+    oroot = os.path.join(output, oroot)
+    if not os.path.isdir(oroot):
+        os.makedirs(oroot)
+        shutil.copystat(root, oroot)
+
+    # Copy files
+    for f in files:
+        of = os.path.join(oroot, f)
+        f = os.path.join(root, f)
+        if os.path.islink(f):
+            # Symlink
+            linkto = os.readlink(f)
+            os.symlink(linkto, of)
+        elif ismacho(f):
+            sff = [os.path.join(r, f[len(inputs[0]) :].lstrip("/")) for r in inputs]
+            args = ["lipo", "-create", "-output", of]
+            args.extend(sff)
+            subprocess.check_call(args)
+        else:
+            # Regular file, just copy from the first input directory
+            shutil.copyfile(f, of)
+            shutil.copystat(f, of)