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// ORIGINAL BELOW
/* 
 * @File:   BufferedAsyncSerial.cpp
 * @Author: Terraneo Federico
 * @Brief:
 * Distributed under the Boost Software License, Version 1.0.
 * Created on January 6, 2011, 3:31 PM
 */

#include <pressure_cells/BufferedAsyncSerial.h>
#include <string>
#include <algorithm>
#include <iostream>
#include <boost/bind.hpp>

using namespace std;

using namespace boost;

//
//Class BufferedAsyncSerial
//

BufferedAsyncSerial::BufferedAsyncSerial (  ):AsyncSerial (  )
{
   setReadCallback ( boost::bind ( &BufferedAsyncSerial::readCallback, this, _1, _2 ) );
}

BufferedAsyncSerial::BufferedAsyncSerial ( const std::string & devname,
                                           unsigned int baud_rate,
                                           asio::serial_port_base::parity opt_parity,
                                           asio::
                                           serial_port_base::character_size opt_csize,
                                           asio::serial_port_base::flow_control opt_flow,
                                           asio::serial_port_base::stop_bits opt_stop ):
AsyncSerial ( devname, baud_rate, opt_parity, opt_csize, opt_flow, opt_stop )
{
   setReadCallback ( boost::bind ( &BufferedAsyncSerial::readCallback, this, _1, _2 ) );
}

size_t BufferedAsyncSerial::read ( char *data, size_t size )
{
   lock_guard < mutex > l ( readQueueMutex );
   size_t
      result = min ( size, readQueue.size (  ) );

   vector < char >::iterator
      it = readQueue.begin (  ) + result;

   copy ( readQueue.begin (  ), it, data );
   readQueue.erase ( readQueue.begin (  ), it );
   return result;
}

std::vector < char >
BufferedAsyncSerial::read (  )
{
   lock_guard < mutex > l ( readQueueMutex );
   vector < char >result;

   result.swap ( readQueue );
   return result;
}

std::string BufferedAsyncSerial::readString (  )
{
   lock_guard < mutex > l ( readQueueMutex );
   string result ( readQueue.begin (  ), readQueue.end (  ) );

   readQueue.clear (  );
   return result;
}

std::string BufferedAsyncSerial::readStringUntil ( const std::string delim )
{
   lock_guard < mutex > l ( readQueueMutex );
   vector < char >::iterator
      it = findStringInVector ( readQueue, delim );

   if ( it == readQueue.end (  ) )
      return "";
   string result ( readQueue.begin (  ), it );

   it += delim.size (  );       //Do remove the delimiter from the queue
   readQueue.erase ( readQueue.begin (  ), it );
   return result;
}

void
  BufferedAsyncSerial::readCallback ( const char *data, size_t len )
{
   lock_guard < mutex > l ( readQueueMutex );
   readQueue.insert ( readQueue.end (  ), data, data + len );
}

std::vector < char >::iterator
BufferedAsyncSerial::findStringInVector ( std::vector < char >&v, const std::string & s )
{
   if ( s.size (  ) == 0 )
      return v.end (  );

   vector < char >::iterator it = v.begin (  );

   for ( ;; )
     {
        vector < char >::iterator result = find ( it, v.end (  ), s[0] );

        if ( result == v.end (  ) )
           return v.end (  );   //If not found return

        for ( size_t i = 0; i < s.size (  ); i++ )
          {
             vector < char >::iterator temp = result + i;

             if ( temp == v.end (  ) )
                return v.end (  );
             if ( s[i] != *temp )
                goto mismatch;
          }
        //Found
        return result;

      mismatch:
        it = result + 1;
     }
}

BufferedAsyncSerial::~BufferedAsyncSerial (  )
{
   clearReadCallback (  );
}

---

pressure_cells
Author(s): Emilio Estrelinha
autogenerated on Wed Jul 23 04:34:41 2014