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Use object's support for zstd compressed DWARF #468

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merged 2 commits into from
Jan 19, 2025
Merged

Use object's support for zstd compressed DWARF #468

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4ad1c10
Support reading zstd compressed DWARF
hanna-kruppe Jan 19, 2025
6838376
Merge branch 'main' into read-zstd-dwarf
mstange Jan 19, 2025
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21 changes: 4 additions & 17 deletions samply-symbols/src/dwarf.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -97,24 +97,11 @@ where
size: file_range.uncompressed_size,
_phantom: PhantomData,
}),
CompressionFormat::Zlib => {
let compressed_bytes = data
.read_bytes_at(file_range.offset, file_range.compressed_size)
.ok()?;

let mut decompressed = Vec::with_capacity(file_range.uncompressed_size as usize);
let mut decompress = flate2::Decompress::new(true);
decompress
.decompress_vec(
compressed_bytes,
&mut decompressed,
flate2::FlushDecompress::Finish,
)
.ok()?;

Some(SingleSectionData::Owned(decompressed))
_ => {
let compressed = file_range.data(data).ok()?;
let decompressed = compressed.decompress().ok()?;
Some(SingleSectionData::Owned(decompressed.into_owned()))
}
_ => None,
}
}

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