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Use TeeSink and TeeSouce in a few more places

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This commit is contained in:
John Ericson 2020-08-13 14:47:53 +00:00
parent 859cd4acea
commit 85aacbee64
5 changed files with 20 additions and 21 deletions
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6
src/libutil/archive.cc
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@ -366,11 +366,7 @@ void copyNAR(Source & source, Sink & sink)
ParseSink parseSink; /* null sink; just parse the NAR */
LambdaSource wrapper([&](unsigned char * data, size_t len) {
auto n = source.read(data, len);
sink(data, n);
return n;
});
TeeSource wrapper { source, sink };
parseDump(parseSink, wrapper);
}

11
src/libutil/serialise.hh
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@ -225,6 +225,17 @@ struct SizedSource : Source
}
};
/* A sink that that just counts the number of bytes given to it */
struct LengthSink : Sink
{
uint64_t length = 0;
virtual void operator () (const unsigned char * _, size_t len)
{
length += len;
}
};
/* Convert a function into a sink. */
struct LambdaSink : Sink
{