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/*
* 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(unsigned 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++)
Serializer::DeSerialize();
}
// Escape the space, equals and percent characters for serializing to Key-Value-Pair text
void SingleLineSerializer::EscapeSingleLine(CStdString& in, CStdString& out)
{
for(unsigned int i=0; i<in.length();i++)
{
TCHAR c = in[i];
if (c == ' ')
{
out+= "%s";
}
else if (c == '%')
{
out+= "%p";
}
else if (c == '=')
{
out+= "%e";
}
else
{
out+= c;
}
}
}
// Unescape the space, equals and percent characters for serializing to Key-Value-Pair text
void SingleLineSerializer::UnEscapeSingleLine(CStdString& in, CStdString& out)
{
unsigned int iin = 0;
while(iin<in.length())
{
if ( in[iin] == '%')
{
iin++;
switch (in[iin])
{
case 's':
out += ' ';
break;
case 'p':
out += '%';
break;
case 'e':
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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