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=== Description (from pull-request) ===
From 14906754525aab38bdf844bec03d1c36faefe2d0 Mon Sep 17 00:00:00 2001
From: Like Ma <likemarti...@gmail.com>
Date: Sun, 22 Nov 2020 03:59:40 +0800
Subject: [PATCH] Support zstd compression.
---
shared/archive.go | 2 ++
1 file changed, 2 insertions(+)
diff --git a/shared/archive.go b/shared/archive.go
index 0e279115a4..122b902c5a 100644
--- a/shared/archive.go
+++ b/shared/archive.go
@@ -54,6 +54,8 @@ func DetectCompressionFile(f io.Reader) ([]string, string,
[]string, error) {
return []string{"-xf"}, ".squashfs", []string{"sqfs2tar",
"--no-skip"}, nil
case bytes.Equal(header[0:3], []byte{'Q', 'F', 'I'}):
return []string{""}, ".qcow2", []string{"qemu-img", "convert",
"-O", "raw"}, nil
+ case bytes.Equal(header[0:4], []byte{0x28, 0xb5, 0x2f, 0xfd}):
+ return []string{"--zstd", "-xf"}, ".tar.zst", []string{"zstd",
"-d"}, nil
default:
return nil, "", nil, fmt.Errorf("Unsupported compression")
}
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