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#include "kingate/util.h"
#include "kingate/exception.h"
namespace kingate {
static const char *safeChars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789"
"_-" ;
string url_escape(const string& str) {
string rv = str;
string::size_type screwed = 0;
for(;;) {
screwed = rv.find_first_not_of(safeChars,screwed);
if(screwed == string::npos)
break;
while(screwed<rv.length() && !strchr(safeChars,rv.at(screwed))) {
char danger = rv.at(screwed);
if(danger==' ') {
rv.replace(screwed++,1,1,'+');
}else{
static char tmp[4] = {'%',0,0,0};
snprintf(&tmp[1],3,"%02X",0xFF&(int)danger);
rv.replace(screwed,1,tmp,3);
screwed+=3;
}
}
}
return rv;
}
string url_unescape(const string& str) {
string rv = str;
string::size_type unscrewed = 0;
for(;;) {
unscrewed = rv.find_first_of("%+",unscrewed);
if(unscrewed == string::npos)
break;
if(rv.at(unscrewed)=='+') {
rv.replace(unscrewed++,1,1,' ');
}else{
if((rv.length()-unscrewed)<3)
throw exception(CODEPOINT,"incorrectly escaped string");
// XXX: ensure it's hex?
int danger = strtol(rv.substr(unscrewed+1,2).c_str(),NULL,16);
rv.replace(unscrewed,3,1,danger);
unscrewed++;
}
}
return rv;
}
}
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