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src/backup/data_blob.rs: add create_zero_chunk() helper

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This commit is contained in:
Dietmar Maurer 2019-10-14 10:44:46 +02:00
parent f06b820ac0
commit 2745151d93
1 changed files with 17 additions and 0 deletions
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17
src/backup/data_blob.rs
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@ -426,3 +426,20 @@ impl <'a, 'b> DataChunkBuilder<'a, 'b> {
Ok((chunk, self.digest))
}
}
/// Create a chunk filled with zeroes
pub fn create_zero_chunk(
crypt_config: Option<&CryptConfig>,
chunk_size: usize,
compress: bool,
) -> Result<(DataBlob, [u8; 32]), Error> {
let mut zero_bytes = Vec::with_capacity(chunk_size);
zero_bytes.resize(chunk_size, 0u8);
let mut chunk_builder = DataChunkBuilder::new(&zero_bytes).compress(compress);
if let Some(ref crypt_config) = crypt_config {
chunk_builder = chunk_builder.crypt_config(crypt_config);
}
chunk_builder.build()
}