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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 "UrlSerializer.h"
void UrlSerializer::AddString(const char* key, CStdString& value)
{
CStdString pair;
CStdString escapedValue;
EscapeUrl(value, escapedValue);
pair.Format("%s=%s&", key, (PCSTR)escapedValue);
m_output += pair;
}
CStdString UrlSerializer::Serialize()
{
m_deSerialize = false; // Set Serialize mode
m_object->Define(this);
return m_output;
}
typedef enum {UrlStartState, UrlKeyState, UrlValueState, UrlErrorState} UrlState;
void UrlSerializer::DeSerialize(CStdString& input)
{
// read string and extract values into map
UrlState state = UrlStartState;
CStdString key;
CStdString value;
CStdString errorDescription;
input.Trim();
input.ToLower();
for(int i=0; i<input.length() && state!= UrlErrorState; i++)
{
TCHAR character = input[i];
switch(state)
{
case UrlStartState:
if(character == '&')
{
; // ignore ampersands
}
else if ( ACE_OS::ace_isalnum(character) )
{
state = UrlKeyState;
key = character;
}
else
{
state = UrlErrorState;
errorDescription = "Cannot find key start, keys must be alphanum";
}
break;
case UrlKeyState:
if( ACE_OS::ace_isalnum(character) )
{
key += character;
}
else if (character == '=')
{
state = UrlValueState;
value.Empty();
}
else
{
state = UrlErrorState;
errorDescription = "Invalid key character, keys must be alphanum";
}
break;
case UrlValueState:
if( character == '=')
{
state = UrlErrorState;
errorDescription = "Value followed by = sign, value should always be followed by space sign";
}
else if (character == '&')
{
state = UrlStartState;
}
else
{
value += character;
}
break;
default:
state = UrlErrorState;
errorDescription = "Non-existing state";
} // switch(state)
if ( (state == UrlStartState) || (i == (input.length()-1)) )
{
if (!key.IsEmpty())
{
// Url unescape
CStdString unescapedValue;
UnEscapeUrl(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!= UrlErrorState; 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 UrlSerializer::EscapeUrl(CStdString& in, CStdString& out)
{
//####### fixme, need unescaping
out = in;
}
// Unescape the space, colon and percent characters for serializing to Key-Value-Pair text
void UrlSerializer::UnEscapeUrl(CStdString& in, CStdString& out)
{
// ###### fixme, need escaping
out = in;
}
CStdString UrlSerializer::FindClass(CStdString& input)
{
CStdString result;
int equalsPostion = input.Find('=');
if (equalsPostion != -1)
{
int ampersandPostion = input.Find('&');
if (ampersandPostion > equalsPostion)
{
// there is at least one parameter
result = input.Mid(equalsPostion+1, ampersandPostion-equalsPostion-1);
}
else
{
// there is no parameter
result = input.Mid(equalsPostion+1, input.GetLength() - equalsPostion - 1);
}
}
result.ToLower();
return result;
}
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