From edd25555261c17f74580245b8305cf7edefa4267 Mon Sep 17 00:00:00 2001
From: tilpner
Date: Thu, 5 Mar 2020 16:45:36 +0100
Subject: Initial commit

---
 nix/mozlz4.nix | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 nix/mozlz4.nix

(limited to 'nix/mozlz4.nix')

diff --git a/nix/mozlz4.nix b/nix/mozlz4.nix
new file mode 100644
index 0000000..1fa0497
--- /dev/null
+++ b/nix/mozlz4.nix
@@ -0,0 +1,24 @@
+{ pkgs, lib }:
+
+let
+  inherit (pkgs.writers) writePython3;
+  inherit (pkgs.python3Packages) lz4;
+in rec {
+  compress = writePython3 "compress.py" { libraries = [ lz4 ]; } ''
+    import sys
+    import lz4.block
+
+    data = lz4.block.compress(sys.stdin.buffer.read())
+    data = b'mozLz40\0' + data
+
+    sys.stdout.buffer.write(data)
+  '';
+
+  decompress = writePython3 "decompress.py" { libraries = [ lz4 ]; } ''
+    import sys
+    import lz4.block
+
+    sys.stdin.buffer.read(8)
+    sys.stdout.buffer.write(lz4.block.decompress(sys.stdin.buffer.read()))
+  '';
+}
-- 
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