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/* Copyright (c) MediaArea.net SARL. All Rights Reserved.
*
* Use of this source code is governed by a zlib-style license that can
* be found in the License.txt file in the root of the source tree.
*/
//---------------------------------------------------------------------------
#include "ZenLib/PreComp.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "ZenLib/Conf_Internal.h"
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "ZenLib/Format/Http/Http_Utils.h"
using namespace std;
//---------------------------------------------------------------------------
namespace ZenLib
{
namespace Format
{
namespace Http
{
//***************************************************************************
// Global variables
//***************************************************************************
std::string EmptyString;
//***************************************************************************
// Character manipulation
//***************************************************************************
//---------------------------------------------------------------------------
unsigned char Char2Hex (unsigned char Char)
{
if (Char<='9' && Char>='0')
Char-='0';
else if (Char<='f' && Char>='a')
Char-='a'-10;
else if (Char<='F' && Char>='A')
Char-='A'-10;
else
Char =0;
return Char;
}
//---------------------------------------------------------------------------
wchar_t Char2Hex (wchar_t Char)
{
if (Char<='9' && Char>='0')
Char-='0';
else if (Char<='f' && Char>='a')
Char-='a'-10;
else if (Char<='F' && Char>='A')
Char-='A'-10;
else
Char =0;
return Char;
}
//---------------------------------------------------------------------------
string Hex2Char (unsigned char Char)
{
string Result;
Result+=(char)((Char/16>=10?'a'-10:'0')+Char/16);
Result+=(char)((Char%16>=10?'a'-10:'0')+Char%16);
return Result;
}
//---------------------------------------------------------------------------
#ifndef WSTRING_MISSING
wstring Hex2Char (wchar_t Char)
{
wstring Result;
Result+=(Char/16>=10?'a'-10:'0')+Char/16;
Result+=(Char%16>=10?'a'-10:'0')+Char%16;
return Result;
}
#endif //WSTRING_MISSING
//***************************************************************************
// URL manipulation
//***************************************************************************
//---------------------------------------------------------------------------
std::string URL_Encoded_Encode (const std::string& URL)
{
string Result;
string::size_type Pos;
for (Pos=0; Pos<URL.size(); Pos++)
{
if ((URL[Pos]>='\x00' && URL[Pos]<='\x20')
|| URL[Pos]=='\x7F'
|| URL[Pos]=='<'
|| URL[Pos]=='>'
|| URL[Pos]=='#'
|| URL[Pos]=='%'
|| URL[Pos]=='\"'
|| URL[Pos]=='{'
|| URL[Pos]=='}'
|| URL[Pos]=='|'
|| URL[Pos]=='\\'
|| URL[Pos]=='^'
|| URL[Pos]=='['
|| URL[Pos]==']'
|| URL[Pos]=='`'
/*|| URL[Pos]==';'
|| URL[Pos]=='/'
|| URL[Pos]=='?'
|| URL[Pos]==':'
|| URL[Pos]=='@'
|| URL[Pos]=='&'
|| URL[Pos]=='='
|| URL[Pos]=='+'
|| URL[Pos]=='$'
|| URL[Pos]==','*/)
Result+='%'+Hex2Char((unsigned char)URL[Pos]);
else
Result+=URL[Pos];
}
return Result;
}
//---------------------------------------------------------------------------
#ifndef WSTRING_MISSING
std::wstring URL_Encoded_Encode (const std::wstring& URL)
{
wstring Result;
wstring::size_type Pos;
for (Pos=0; Pos<URL.size(); Pos++)
{
if (URL[Pos]<=L'\x20'
|| URL[Pos]==L'\x7F'
|| URL[Pos]==L'<'
|| URL[Pos]==L'>'
|| URL[Pos]==L'#'
|| URL[Pos]==L'%'
|| URL[Pos]==L'\"'
|| URL[Pos]==L'{'
|| URL[Pos]==L'}'
|| URL[Pos]==L'|'
|| URL[Pos]==L'\\'
|| URL[Pos]==L'^'
|| URL[Pos]==L'['
|| URL[Pos]==L']'
|| URL[Pos]==L'`'
/*|| URL[Pos]==L';'
|| URL[Pos]==L'/'
|| URL[Pos]==L'?'
|| URL[Pos]==L':'
|| URL[Pos]==L'@'
|| URL[Pos]==L'&'
|| URL[Pos]==L'=L'
|| URL[Pos]==L'+'
|| URL[Pos]==L'$'
|| URL[Pos]==L','*/)
Result+=L'%'+Hex2Char(URL[Pos]);
else
Result+=URL[Pos];
}
return Result;
}
#endif //WSTRING_MISSING
//---------------------------------------------------------------------------
std::string URL_Encoded_Decode (const std::string& URL)
{
string Result;
string::size_type Pos;
for (Pos=0; Pos<URL.size(); Pos++)
{
if (URL[Pos]=='%' && Pos+2<URL.size()) //At least 3 chars
{
const unsigned char Char1 = Char2Hex((unsigned char)URL[Pos+1]);
const unsigned char Char2 = Char2Hex((unsigned char)URL[Pos+2]);
const unsigned char Char = (Char1<<4) | Char2;
Result+=Char;
Pos+=2; //3 chars are used
}
else if (URL[Pos]=='+')
Result+=' ';
else
Result+=URL[Pos];
}
return Result;
}
//---------------------------------------------------------------------------
#ifndef WSTRING_MISSING
std::wstring URL_Encoded_Decode (const std::wstring& URL)
{
wstring Result;
wstring::size_type Pos;
for (Pos=0; Pos<URL.size(); Pos++)
{
if (URL[Pos]==L'%' && Pos+2<URL.size()) //At least 3 chars
{
const wchar_t Char1 = Char2Hex(URL[Pos+1]);
const wchar_t Char2 = Char2Hex(URL[Pos+2]);
const wchar_t Char = (Char1<<4) | Char2;
Result+=Char;
Pos+=2; //3 chars are used
}
else if (URL[Pos]==L'+')
Result+=L' ';
else
Result+=URL[Pos];
}
return Result;
}
#endif //WSTRING_MISSING
//***************************************************************************
// Cleanup
//***************************************************************************
//---------------------------------------------------------------------------
void TrimLeft (std::string& String, char ToTrim)
{
string::size_type First=0;
while (String.operator[](First)==ToTrim)
First++;
String.assign (String.c_str()+First);
}
} //Namespace
} //Namespace
} //Namespace
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