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/*************************************************************************
*
* HTCd - Copyright (C) 1998-2006 Henrik Rydberg
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <mime/pack.h>
const char hex2char[16]={
'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
};
const unsigned char2hex[256]={
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,
0,10,11,12,13,14,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,10,11,12,13,14,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
};
mstream& cashex(mstream& out,unsigned char c) {
return out.put(hex2char[c>>4]).put(hex2char[c&15]);
}
char hexasc(unsigned char c1,unsigned char c2) {
return ((char2hex[c1]<<4)|char2hex[c2]);
}
void Pack(mstream& out,const sref& s)
{
static const charset escaped("&=%+\"'? ");
static const charset conv=~cset_printable|escaped;
sref q,p=s;
while(p.nempty()) {
p=p.adv(q=p.left_first_of(conv));
out<<q;
while(conv.test(p.front())) {
char c=*p; p=p.popf();
if(c==' ') out.put('+');
else {
out.put('%');
cashex(out,c);
}
}
}
}
void Pack(mstream& out,const rpile& list)
{
for(rpile::const_iterator p=list.begin();p!=list.end();++p) {
Pack(out,*p);
out.put('&');
}
}
void Pack(mstream& out,const rrpile& list)
{
for(rrpile::const_iterator p=list.begin();p!=list.end();++p) {
Pack(out,p->first);
out.put('=');
Pack(out,p->second);
out.put('&');
}
}
///////////////////////////////////////////////////////////////
void Unpack(mstream& out,const sref& in)
{
static const charset tags("%+");
sref e,p=in;
while(p.nempty()) {
p=p.adv(e=p.left_first_of(tags));
out<<e;
while(tags.test(p.front())) {
char c=*p; p=p.popf();
if(c=='+') out.put(' ');
else if(c=='%') {
unsigned char c1=p[0],c2=p[1]; p=p.adv(2);
out.put(hexasc(c1,c2));
}
else out.put(c);
}
}
}
void Unpack(spile& list,const sref& in)
{
sref e,p=in;
while(p.nempty()) {
p=p.adv(e=p.left_first('&')).popf();
if(e.nempty()) {
list.push_back(mstring());
swrite sw(list.back());
Unpack(sw,e);
}
}
}
void Unpack(sspile& list,const sref& in)
{
sref e1,e2,p=in;
while(p.nempty()) {
p=p.adv(e1=p.left_first('=')).popf();
if(e1.nempty()) {
p=p.adv(e2=p.left_first('&')).popf();
list.push_back(sstring());
swrite sw1(list.back().first);
Unpack(sw1,e1);
swrite sw2(list.back().second);
Unpack(sw2,e2);
}
}
}
///////////////////////////////////////////////////////////////
void CRLF2LF(mstream& out,const sref& in)
{
sref first,rest=in;
while(Splitln(first,rest)) out<<first<<"\n";
}
void LF2CRLF(mstream& out,const sref& in)
{
sref first,rest=in;
while(Splitln(first,rest)) out<<first<<CRLF;
}
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