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libutil: allow draining Generator<Bytes> into sinks

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Change-Id: I442d03a5399096d4baca9a2618b4c4b64db36c4b
This commit is contained in:
eldritch horrors 2024-06-27 16:48:10 +02:00
parent 4857feb910
commit b252b3c6e3
2 changed files with 10 additions and 0 deletions
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1
perl/meson.build
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@ -65,5 +65,6 @@ if cxx.get_linker_id() in ['ld.bfd', 'ld.gold']
endif
libstore = dependency('lixstore', 'lix-store', required : true)
libutil = dependency('lixutil', 'lix-util', required : true)
subdir('lib/Nix')

9
src/libutil/serialise.hh
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@ -1,8 +1,10 @@
#pragma once
///@file
#include <concepts>
#include <memory>
#include "generator.hh"
#include "strings.hh"
#include "types.hh"
#include "file-descriptor.hh"
@ -340,6 +342,13 @@ std::unique_ptr<FinishSink> sourceToSink(std::function<void(Source &)> fun);
*/
std::unique_ptr<Source> sinkToSource(std::function<void(Sink &)> fun);
inline Sink & operator<<(Sink & sink, Generator<Bytes> && g)
{
while (auto buffer = g.next()) {
sink(std::string_view(buffer->data(), buffer->size()));
}
return sink;
}
void writePadding(size_t len, Sink & sink);
void writeString(std::string_view s, Sink & sink);