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PageCompiler: optimize handler code by removing useless statements

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This commit is contained in:
Guenter Obiltschnig
2017-09-04 19:31:47 +02:00
parent 968dfe77dc
commit 39e54d714e
11 changed files with 33 additions and 14 deletions
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26
PageCompiler/src/CodeWriter.cpp
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@@ -1,7 +1,7 @@
//
// CodeWriter.cpp
//
// $Id: //poco/1.4/PageCompiler/src/CodeWriter.cpp#3 $
// $Id: //poco/1.7/PageCompiler/src/CodeWriter.cpp#4 $
//
// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
// and Contributors.
@@ -351,7 +351,7 @@ void CodeWriter::writeContent(std::ostream& ostr)
if (buffered)
{
ostr << "\tstd::stringstream responseStream;\n";
ostr << _page.handler().str();
ostr << cleanupHandler(_page.handler().str());
if (!chunked)
{
ostr << "\tresponse.setContentLength(static_cast<int>(responseStream.tellp()));\n";
@@ -363,13 +363,31 @@ void CodeWriter::writeContent(std::ostream& ostr)
ostr << "\tstd::ostream& _responseStream = response.send();\n"
<< "\tPoco::DeflatingOutputStream _gzipStream(_responseStream, Poco::DeflatingStreamBuf::STREAM_GZIP, " << compressionLevel << ");\n"
<< "\tstd::ostream& responseStream = _compressResponse ? _gzipStream : _responseStream;\n";
ostr << _page.handler().str();
ostr << cleanupHandler(_page.handler().str());
ostr << "\tif (_compressResponse) _gzipStream.close();\n";
}
else
{
ostr << "\tstd::ostream& responseStream = response.send();\n";
ostr << _page.handler().str();
ostr << cleanupHandler(_page.handler().str());
}
}
std::string CodeWriter::cleanupHandler(std::string handler)
{
static const std::string EMPTY_WRITE("\tresponseStream << \"\";\n");
static const std::string NEWLINE_WRITE("\tresponseStream << \"\\n\";\n");
static const std::string DOUBLE_NEWLINE_WRITE("\tresponseStream << \"\\n\";\n\tresponseStream << \"\\n\";\n");
static const std::string EMPTY;
// remove empty writes
Poco::replaceInPlace(handler, EMPTY_WRITE, EMPTY);
// remove consecutive newlines
while (handler.find(DOUBLE_NEWLINE_WRITE) != std::string::npos)
{
Poco::replaceInPlace(handler, DOUBLE_NEWLINE_WRITE, NEWLINE_WRITE);
}
return handler;
}