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protocol.cpp
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2002-07-19
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/////////////////////////////////////////////////////////////////////////////
// Name: protocol.cpp
// Purpose: Implement protocol base class
// Author: Guilhem Lavaux
// Modified by:
// Created: 07/07/1997
// RCS-ID: $Id: protocol.cpp,v 1.15 2002/07/14 20:26:07 MBN Exp $
// Copyright: (c) 1997, 1998 Guilhem Lavaux
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation "protocol.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_PROTOCOL
#include "wx/protocol/protocol.h"
#include "wx/url.h"
#include "wx/module.h"
#include <stdlib.h>
/////////////////////////////////////////////////////////////////
// wxProtoInfo
/////////////////////////////////////////////////////////////////
/*
* --------------------------------------------------------------
* --------- wxProtoInfo CONSTRUCTOR ----------------------------
* --------------------------------------------------------------
*/
wxProtoInfo::wxProtoInfo(const wxChar *name, const wxChar *serv,
const bool need_host1, wxClassInfo *info)
{
m_protoname = name;
m_servname = serv;
m_cinfo = info;
m_needhost = need_host1;
next = wxURL::ms_protocols;
wxURL::ms_protocols = this;
}
/////////////////////////////////////////////////////////////////
// wxProtocol ///////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////
#if wxUSE_SOCKETS
IMPLEMENT_ABSTRACT_CLASS(wxProtocol, wxSocketClient)
#else
IMPLEMENT_ABSTRACT_CLASS(wxProtocol, wxObject)
#endif
wxProtocol::wxProtocol()
#if wxUSE_SOCKETS
: wxSocketClient()
#endif
{
}
#if wxUSE_SOCKETS
bool wxProtocol::Reconnect()
{
wxIPV4address addr;
if (!GetPeer(addr))
{
Close();
return FALSE;
}
if (!Close())
return FALSE;
if (!Connect(addr))
return FALSE;
return TRUE;
}
// ----------------------------------------------------------------------------
// Read a line from socket
// ----------------------------------------------------------------------------
// TODO ReadLine() should use buffers private to wxProtocol for efficiency!
// static
wxProtocolError wxProtocol::ReadLine(wxSocketBase *socket, wxString& result)
{
result.Empty();
char ch, chLast = '\0';
while ( !socket->Read(&ch, sizeof(ch)).Error() )
{
switch ( ch )
{
case '\r':
// remember it, if the following is '\n', we're done
chLast = '\r';
break;
case '\n':
// only ends line if the previous character was '\r'
if ( chLast == '\r' )
{
// EOL found
return wxPROTO_NOERR;
}
//else: fall through
default:
// normal char
if ( chLast )
{
result += chLast;
chLast = '\0';
}
result += ch;
}
}
return wxPROTO_NETERR;
}
wxProtocolError wxProtocol::ReadLine(wxString& result)
{
return ReadLine(this, result);
}
// old function which only chops '\n' and not '\r\n'
wxProtocolError GetLine(wxSocketBase *sock, wxString& result) {
#define PROTO_BSIZE 2048
size_t avail, size;
char tmp_buf[PROTO_BSIZE], tmp_str[PROTO_BSIZE];
char *ret;
bool found;
avail = sock->Read(tmp_buf, PROTO_BSIZE).LastCount();
if (sock->Error() || avail == 0)
return wxPROTO_NETERR;
memcpy(tmp_str, tmp_buf, avail);
// Not implemented on all systems
// ret = (char *)memccpy(tmp_str, tmp_buf, '\n', avail);
found = FALSE;
for (ret=tmp_str;ret < (tmp_str+avail); ret++)
if (*ret == '\n') {
found = TRUE;
break;
}
if (!found)
return wxPROTO_PROTERR;
*ret = 0;
result = tmp_str;
result = result.Left(result.Length()-1);
size = ret-tmp_str+1;
sock->Unread(&tmp_buf[size], avail-size);
return wxPROTO_NOERR;
#undef PROTO_BSIZE
}
#endif // wxUSE_SOCKETS
#endif // wxUSE_PROTOCOL