1 files changed, 41 insertions, 0 deletions
diff --git a/default.packages.jar.do b/default.packages.jar.do
new file mode 100755
index 0000000..27dedf9
--- /dev/null
+++ b/default.packages.jar.do
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+import re
+from subprocess import run
+from sys import argv
+from tempfile import TemporaryDirectory
+from zipfile import ZipFile, ZipInfo
+
+variant = argv[1].removesuffix(".packages.jar")
+run(["redo-ifchange", "packages.rc"], close_fds=False).check_returncode()
+jars = []
+expr = re.compile(r"^packages_" + variant + r"\[([^]]*)\]=")
+with open("packages.rc") as f:
+    for line in f:
+        if match := expr.match(line):
+            jars.append(f"pkg/{match.group(1)}.jar")
+run(["redo-ifchange", *jars], close_fds=False).check_returncode()
+already_written = set()
+with TemporaryDirectory() as d, ZipFile(argv[3], "w") as out:
+    for jar in reversed(jars):
+        with ZipFile(jar) as z:
+            for inf in z.infolist():
+                if inf.is_dir():
+                    continue
+                path = inf.filename.split("/")
+                if (
+                    not path
+                    or path[0] == ""
+                    or ".." in path
+                    or path == ["META-INF", "MANIFEST.MF"]
+                    or inf.filename in already_written
+                ):
+                    continue
+                already_written.add(inf.filename)
+                with z.open(inf.filename) as src:
+                    out.writestr(inf, src.read())
+    out.writestr(
+        ZipInfo("META-INF/MANIFEST.MF"),
+        b"Manifest-Version: 1.0\nCreated-By: python-program\n",
+    )
+# vim:ft=python