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chore: don't try to recompress uncompressed to uncompressed

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This commit is contained in:
Marcus Holland-Moritz 2023-12-17 11:20:30 +01:00
parent db0f2c0450
commit 0a24ebada1
1 changed files with 18 additions and 1 deletions
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19
src/dwarfs/filesystem_v2.cpp
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@ -615,6 +615,19 @@ void filesystem_<LoggerPolicy>::rewrite(progress& prog,
s->data(*mm_));
};
auto from_none_to_none =
[&](auto const& s,
std::optional<fragment_category::value_type> const& cat =
std::nullopt) {
if (s->compression() == compression_type::NONE) {
auto& bc = writer.get_compressor(s->type(), cat);
if (bc.type() == compression_type::NONE) {
return true;
}
}
return false;
};
parser_.rewind();
while (auto s = parser_.next_section()) {
@ -644,6 +657,10 @@ void filesystem_<LoggerPolicy>::rewrite(progress& prog,
}
}
if (recompress_block && from_none_to_none(s, cat)) {
recompress_block = false;
}
if (recompress_block) {
log_recompress(s, cat);
@ -658,7 +675,7 @@ void filesystem_<LoggerPolicy>::rewrite(progress& prog,
case section_type::METADATA_V2_SCHEMA:
case section_type::METADATA_V2:
if (opts.recompress_metadata) {
if (opts.recompress_metadata && !from_none_to_none(s)) {
log_recompress(s);
writer.write_section(s->type(), s->compression(), s->data(*mm_));
} else {