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#include "urlencode.h"
std::string char2hex( char dec )
{
char dig1 = (dec&0xF0)>>4;
char dig2 = (dec&0x0F);
if ( 0<= dig1 && dig1<= 9) dig1+=48; //0,48 in ascii
if (10<= dig1 && dig1<=15) dig1+=65-10; //A,65 in ascii
if ( 0<= dig2 && dig2<= 9) dig2+=48;
if (10<= dig2 && dig2<=15) dig2+=65-10;
std::string r;
r.append( &dig1, 1);
r.append( &dig2, 1);
return r;
}
std::string urlencode( const std::string &c )
{
std::string escaped;
int max = c.length();
for(int i=0; i<max; i++)
{
if ( (48 <= c[i] && c[i] <= 57) ||//0-9
(65 <= c[i] && c[i] <= 90) ||//ABC...XYZ
(97 <= c[i] && c[i] <= 122) || //abc...xyz
(c[i]=='~' || c[i]=='-' || c[i]=='_' || c[i]=='.')
)
{
escaped.append( &c[i], 1);
}
else
{
escaped.append("%");
escaped.append( char2hex(c[i]) );//converts char 255 to string "FF"
}
}
return escaped;
}
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