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readString(): Read directly into std::string

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When reading a huge string, this halves memory consumption.

(Strictly speaking, this appears only valid in C++17, but who cares...)
This commit is contained in:
Eelco Dolstra 2017-03-01 14:54:11 +01:00
parent 07a0b8ca67
commit 374908726b
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GPG key ID: 8170B4726D7198DE
1 changed files with 3 additions and 3 deletions
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6
src/libutil/serialise.cc
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@ -207,10 +207,10 @@ size_t readString(unsigned char * buf, size_t max, Source & source)
string readString(Source & source)
{
auto len = readNum<size_t>(source);
auto buf = std::make_unique<unsigned char[]>(len);
source(buf.get(), len);
std::string res(len, 0);
source((unsigned char*) res.data(), len);
readPadding(len, source);
return string((char *) buf.get(), len);
return res;
}
Source & operator >> (Source & in, string & s)