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Allow repetition inside non-default chunks of sparse files

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Chris Hennick 2023-05-01 16:05:27 -07:00
parent c18fae1f77
commit 69bb01d535
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GPG key ID: 25653935CC8B6C74
1 changed files with 7 additions and 2 deletions
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9
fuzz/fuzz_targets/fuzz_write.rs
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@ -17,7 +17,9 @@ const LARGE_FILE_BUF_SIZE: usize = u32::MAX as usize + 1;
#[derive(Arbitrary, Clone, Debug)]
pub struct SparseFilePart {
pub start: u32,
pub contents: Vec<u8>
pub first_byte: u8,
pub extra_bytes: Vec<u8>,
pub repeats: u8
}
#[derive(Arbitrary,Debug)]
@ -83,7 +85,10 @@ fn do_operation<T>(writer: &mut zip_next::ZipWriter<T>,
repeat(default_pattern.into_iter()).flatten().take(LARGE_FILE_BUF_SIZE + file.min_extra_length as usize)
.collect();
for part in &file.parts {
for (index, byte) in part.contents.iter().enumerate() {
let mut bytes = Vec::with_capacity(part.extra_bytes.len() + 1);
bytes.push(part.first_byte);
bytes.extend(part.extra_bytes);
for (index, byte) in repeat(bytes.iter()).take(part.repeats).flatten().enumerate() {
sparse_file[part.start as usize + index] = *byte;
}
}