/*

 * lftp - file transfer program

 *

 * Copyright (c) 2016 by Alexander V. Lukyanov (lav@yars.free.net)

 *

 * 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 3 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, see <http://www.gnu.org/licenses/>.

 */

#include <config.h>

#include "HttpHeader.h"

const xstring& HttpHeader::extract_quoted_value(const char *value,const char **p_end)

{

   static xstring value1;

   if(*value=='"')

   {

      value1.truncate();

      value++;

      while(*value && *value!='"')

      {

	 if(*value=='\\' && value[1])

	    value++;

	 value1.append(*value++);

      }

      if(p_end)

	 *p_end=(*value=='"'?value+1:value);

   }

   else

   {

      int end=strcspn(value,"()<>@,;:\\\"/[]?={} \t");

      value1.nset(value,end);

      if(p_end)

	 *p_end=value+end;

   }

   return value1;

}

xstring& HttpHeader::append_quoted_value(xstring& s,const char *v)

{

   s.append('"');

   while(*v) {

      if(*v=='\\' || *v=='"')

	 s.append('\\');

      s.append(*v++);

   }

   return s.append('"');

}