From 7e1d63dd9fd149e4934bf77095c8610fac786b04 Mon Sep 17 00:00:00 2001
From: Henri Herscher <henri@oreka.org>
Date: Thu, 20 Oct 2005 13:40:58 +0000
Subject: First checkin

git-svn-id: https://oreka.svn.sourceforge.net/svnroot/oreka/trunk@2 09dcff7a-b715-0410-9601-b79a96267cd0
---
 orkbasecxx/serializers/SingleLineSerializer.cpp | 203 ++++++++++++++++++++++++
 1 file changed, 203 insertions(+)
 create mode 100644 orkbasecxx/serializers/SingleLineSerializer.cpp

(limited to 'orkbasecxx/serializers/SingleLineSerializer.cpp')

diff --git a/orkbasecxx/serializers/SingleLineSerializer.cpp b/orkbasecxx/serializers/SingleLineSerializer.cpp
new file mode 100644
index 0000000..11b60d9
--- /dev/null
+++ b/orkbasecxx/serializers/SingleLineSerializer.cpp
@@ -0,0 +1,203 @@
+/*
+ * Oreka -- A media capture and retrieval platform
+ * 
+ * Copyright (C) 2005, orecx LLC
+ *
+ * http://www.orecx.com
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License.
+ * Please refer to http://www.gnu.org/copyleft/gpl.html
+ *
+ */
+
+#include "ace/OS_NS_ctype.h"
+#include "Utils.h"
+#include "SingleLineSerializer.h"
+
+
+void SingleLineSerializer::AddString(const char* key, CStdString& value)
+{
+	CStdString pair;
+	CStdString escapedValue;
+	EscapeSingleLine(value, escapedValue);
+	pair.Format("%s=%s ", key, (PCSTR)escapedValue);
+	m_output += pair;
+}
+
+CStdString SingleLineSerializer::Serialize()
+{
+	m_deSerialize = false;		// Set Serialize mode
+	m_object->Define(this);
+	return m_output;
+}
+
+typedef enum {SingleLineStartState, SingleLineKeyState, SingleLineValueState, SingleLineErrorState} SingleLineState;
+
+void SingleLineSerializer::DeSerialize(CStdString& input)
+{
+	// read string and extract values into map
+	SingleLineState state = SingleLineStartState;
+	CStdString key;
+	CStdString value;
+	// #### Additionally, errorDescription should be converted to Exceptions
+	CStdString errorDescription;
+
+	input.Trim();
+
+	for(int i=0; i<input.length() && state!= SingleLineErrorState; i++)
+	{
+		TCHAR character = input[i];
+
+		switch(state)
+		{
+		case SingleLineStartState:
+			if(character == ' ')
+			{
+				;	// ignore spaces
+			}
+			else if ( ACE_OS::ace_isalnum(character) )
+			{
+				state = SingleLineKeyState;
+				key = character;
+			}
+			else
+			{
+				state = SingleLineErrorState;
+				errorDescription = "Cannot find key start, keys must be alphanum";
+			}
+			break;
+		case SingleLineKeyState:
+			if( ACE_OS::ace_isalnum(character) )
+			{
+				key += character;
+			}
+			else if (character == '=')
+			{
+				state = SingleLineValueState;
+				value.Empty();
+			}
+			else
+			{
+				state = SingleLineErrorState;
+				errorDescription = "Invalid key character, keys must be alphanum";
+			}
+			break;
+		case SingleLineValueState:
+			if( character == '=')
+			{
+				state = SingleLineErrorState;
+				errorDescription = "Value followed by = sign, value should always be followed by space sign";				
+			}
+			else if (character == ' ')
+			{
+				state = SingleLineStartState;
+			}
+			else
+			{
+				value += character;
+			}
+			break;
+		default:
+			state = SingleLineErrorState;
+			errorDescription = "Non-existing state";
+		}	// switch(state)
+
+		if ( (state == SingleLineStartState) || (i == (input.length()-1)) )
+		{
+			if (!key.IsEmpty())
+			{
+				// SingleLine unescape
+				CStdString unescapedValue;
+				UnEscapeSingleLine(value, unescapedValue);
+
+				// Add pair to key-value map
+				m_map.insert(std::make_pair(key, unescapedValue));
+				key.Empty();
+				value.Empty();
+			}
+		}
+	}	// for(int i=0; i<input.length() && state!= SingleLineErrorState; i++)
+
+	m_deSerialize = true;		// Set DeSerialize mode
+	m_object->Define(this);
+	m_object->Validate();
+}
+
+// Escape the space, colon and percent characters for serializing to Key-Value-Pair text
+void SingleLineSerializer::EscapeSingleLine(CStdString& in, CStdString& out)
+{
+	for(int i=0; i<in.length();i++)
+	{
+		TCHAR c = in[i];
+		if (c == ' ')
+		{
+			out+= "%s";
+		}
+		else if (c == ':')
+		{
+			out+= "%c";
+		}
+		else if (c == '%')
+		{
+			out+= "%p";
+		}
+		else
+		{
+			out+= c;
+		}
+	}
+}
+
+// Unescape the space, colon and percent characters for serializing to Key-Value-Pair text
+void SingleLineSerializer::UnEscapeSingleLine(CStdString& in, CStdString& out)
+{
+	int iin = 0;
+
+	while(iin<in.length())
+	{ 
+		if ( in[iin] == '%')
+		{
+			iin++;
+
+			switch (in[iin])
+			{
+			case 's':
+				out += ' ';
+				break;
+			case 'c':
+				out += ':';
+				break;
+			case 'p':
+				out += '%';
+				break;
+			}
+		}
+		else
+		{
+			out += in[iin];
+		}
+		iin++;
+	}
+}
+
+CStdString SingleLineSerializer::FindClass(CStdString& input)
+{
+	CStdString result;
+	int equalsPostion = input.Find('=');
+	if (equalsPostion != -1)
+	{
+		int spacePostion = input.Find(' ');
+		if (spacePostion > equalsPostion)
+		{
+			result = input.Mid(equalsPostion+1, spacePostion-equalsPostion-1);
+		}
+		else
+		{
+			result = input.Mid(equalsPostion+1, input.GetLength() - equalsPostion - 1);
+		}
+	}
+	result.ToLower();
+	return result;
+}
+
-- 
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