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WriteHelpers: add template specialization for const char * [#METR-15514]

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This commit is contained in:
Pavel Kartavyy 2015-05-28 17:08:31 +03:00
parent c94bd2fc09
commit 6d71c367ed
1 changed files with 14 additions and 4 deletions
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18
dbms/include/DB/IO/WriteHelpers.h
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@ -252,13 +252,19 @@ void writeAnyEscapedString(const String & s, WriteBuffer & buf)
}
inline void writeEscapedString(const String & s, WriteBuffer & buf)
inline void writeEscapedString(const char * str, size_t size, WriteBuffer & buf)
{
/// strpbrk в libc под Linux на процессорах с SSE 4.2 хорошо оптимизирована (этот if ускоряет код в 1.5 раза)
if (nullptr == strpbrk(s.data(), "\b\f\n\r\t\'\\") && strlen(s.data()) == s.size())
writeString(s, buf);
if (nullptr == strpbrk(str, "\b\f\n\r\t\'\\") && strlen(str) == size)
writeString(str, size, buf);
else
writeAnyEscapedString<'\''>(s, buf);
writeAnyEscapedString<'\''>(str, str + size, buf);
}
inline void writeEscapedString(const String & s, WriteBuffer & buf)
{
writeEscapedString(s.data(), s.size(), buf);
}
@ -470,6 +476,10 @@ inline void writeText(const Float32 & x, WriteBuffer & buf) { writeFloatText(x,
inline void writeText(const Float64 & x, WriteBuffer & buf) { writeFloatText(x, buf); }
inline void writeText(const String & x, WriteBuffer & buf) { writeEscapedString(x, buf); }
inline void writeText(const bool & x, WriteBuffer & buf) { writeBoolText(x, buf); }
/// в отличие от метода для std::string
/// здесь предполагается, что x null-terminated строка.
inline void writeText(const char * x, WriteBuffer & buf) { writeEscapedString(x, strlen(x), buf); }
inline void writeText(const char * x, size_t size, WriteBuffer & buf) { writeEscapedString(x, size, buf); }
inline void writeText(const VisitID_t & x, WriteBuffer & buf) { writeIntText(static_cast<const UInt64 &>(x), buf); }
inline void writeText(const mysqlxx::Date & x, WriteBuffer & buf) { writeDateText(x, buf); }