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Use libarchive for all compression

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Yorick van Pelt 2019-12-10 15:47:38 +07:00 • committed by Lars Jellema
parent b19aec7eeb
commit 8a0c00b856
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GPG key ID: 563A03936D48B4BC
7 changed files with 241 additions and 378 deletions
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56
src/libutil/serialise.cc
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@ -201,6 +201,61 @@ static DefaultStackAllocator defaultAllocatorSingleton;
StackAllocator *StackAllocator::defaultAllocator = &defaultAllocatorSingleton;
std::unique_ptr<FinishSink> sourceToSink(std::function<void(Source &)> fun)
{
struct SourceToSink : FinishSink
{
typedef boost::coroutines2::coroutine<bool> coro_t;
std::function<void(Source &)> fun;
std::optional<coro_t::push_type> coro;
SourceToSink(std::function<void(Source &)> fun) : fun(fun)
{
}
std::string_view cur;
void operator () (std::string_view in) override
{
if (in.empty()) return;
cur = in;
if (!coro)
coro = coro_t::push_type(VirtualStackAllocator{}, [&](coro_t::pull_type & yield) {
LambdaSource source([&](char *out, size_t out_len) {
if (cur.empty()) {
yield();
if (yield.get()) {
return (size_t)0;
}
}
size_t n = std::min(cur.size(), out_len);
memcpy(out, cur.data(), n);
cur.remove_prefix(n);
return n;
});
fun(source);
});
if (!*coro) { abort(); }
if (!cur.empty()) (*coro)(false);
}
void finish() {
if (!coro) return;
if (!*coro) abort();
(*coro)(true);
if (*coro) abort();
}
};
return std::make_unique<SourceToSink>(fun);
}
std::unique_ptr<Source> sinkToSource(
std::function<void(Sink &)> fun,
std::function<void()> eof)
@ -212,7 +267,6 @@ std::unique_ptr<Source> sinkToSource(
std::function<void(Sink &)> fun;
std::function<void()> eof;
std::optional<coro_t::pull_type> coro;
bool started = false;
SinkToSource(std::function<void(Sink &)> fun, std::function<void()> eof)
: fun(fun), eof(eof)