added: acceptbaseparser.h acceptbaseparser.cpp

class AcceptBaseParser for parsing http accept* headers
added: acceptencodingparser.h
       class AcceptEncodingParser for parsing HTTP_ACCEPT_ENCODING header
added: compresion only when HTTP_ACCEPT_ENCODING has 'deflate'
       and the browser is not the Internet Explorer


git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@515 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/acceptbaseparser.cpp

@@ -0,0 +1,113 @@
+/*
+ * This file is a part of CMSLU -- Content Management System like Unix
+ * and is not publicly distributed
+ * 
+ * Copyright (c) 2008-2009, Tomasz Sowa
+ * All rights reserved.
+ * 
+ */
+ 
+#include "acceptbaseparser.h"
+
+
+
+bool AcceptBaseParser::IsWhite(int c)
+{
+	if( c==' ' || c=='\t' )
+		return true;
+
+return false;
+}
+
+
+void AcceptBaseParser::SkipWhite()
+{
+	while( IsWhite(*text) )
+		++text;
+}
+
+
+void AcceptBaseParser::RemoveWhiteFromEnd(std::string & str)
+{
+	if( str.empty() )
+		return;
+
+	size_t i = str.size() - 1;
+
+	for( ; i!=0 && IsWhite(str[i]) ; --i);
+
+	if( !IsWhite(str[i]) )
+		++i;
+
+	if( i < str.size() )
+		str.erase(i); // erasing until the end of the string
+}
+
+
+
+void AcceptBaseParser::ReadParameter()
+{
+	param.clear();
+
+	SkipWhite();
+
+	while( *text!=0 && *text!=',' && *text!=';' )
+	{
+		param += *text;
+		++text;
+	}
+
+	RemoveWhiteFromEnd(param);
+}
+
+
+void AcceptBaseParser::ReadQ()
+{
+	q = 1.0;
+
+	SkipWhite();
+
+	if( *text != ';' )
+		return;
+
+	++text; // skipping a semicolon
+
+	while( *text!=0 && *text!=',' && *text!='=' )
+		// skipping until ',' or '='
+		++text;
+
+	if( *text==0 || *text==',' )
+		return;
+
+	++text; // skipping '='
+
+	SkipWhite();
+	q = strtod(text, (char**)&text);
+}
+
+
+void AcceptBaseParser::SkipParam()
+{
+	SkipWhite();
+
+	if( *text == ',' )
+		++text;
+}
+
+
+
+void AcceptBaseParser::Parse(const char * str)
+{
+	text = str;
+	Init();
+	
+	while( *text != 0 )
+	{
+		ReadParameter();
+		ReadQ();
+		SkipParam();
+		Param(param, q);
+	}
+}
+
+