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Enable sparseness only conditionally

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We can either preallocate storage for a file or sparsify it. This
detects a pack file as sparse if it contains an all zero block or
consists of only one block. As the file sparsification is just an
approximation, hide it behind a `--sparse` parameter.
This commit is contained in:
Michael Eischer
2022-08-07 17:26:46 +02:00
parent 3047bf611c
commit 5b6a77058a
9 changed files with 102 additions and 68 deletions
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8
internal/restorer/fileswriter_test.go
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@@ -16,16 +16,16 @@ func TestFilesWriterBasic(t *testing.T) {
f1 := dir + "/f1"
f2 := dir + "/f2"
rtest.OK(t, w.writeToFile(f1, []byte{1}, 0, 2))
rtest.OK(t, w.writeToFile(f1, []byte{1}, 0, 2, false))
rtest.Equals(t, 0, len(w.buckets[0].files))
rtest.OK(t, w.writeToFile(f2, []byte{2}, 0, 2))
rtest.OK(t, w.writeToFile(f2, []byte{2}, 0, 2, false))
rtest.Equals(t, 0, len(w.buckets[0].files))
rtest.OK(t, w.writeToFile(f1, []byte{1}, 1, -1))
rtest.OK(t, w.writeToFile(f1, []byte{1}, 1, -1, false))
rtest.Equals(t, 0, len(w.buckets[0].files))
rtest.OK(t, w.writeToFile(f2, []byte{2}, 1, -1))
rtest.OK(t, w.writeToFile(f2, []byte{2}, 1, -1, false))
rtest.Equals(t, 0, len(w.buckets[0].files))
buf, err := ioutil.ReadFile(f1)