added wxStringOutputStream::TellO(); fixed bugs in OnSysWrite()

[wxWidgets.git] / src / common / protocol.cpp

diff --git a/src/common/protocol.cpp b/src/common/protocol.cpp
index c3f0c1e4b4dd8139b65ea092f44ab41958b7f996..42b770e55d582c4aa800d09f7114c32a742801d6 100644 (file)
--- a/src/common/protocol.cpp
+++ b/src/common/protocol.cpp
@@ -9,7 +9,7 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
 #pragma implementation "protocol.h"
 #endif
 
@@ -40,9 +40,9 @@
 
 wxProtoInfo::wxProtoInfo(const wxChar *name, const wxChar *serv,
                          const bool need_host1, wxClassInfo *info)
+           : m_protoname(name),
+             m_servname(serv)
 {
-    m_protoname = name;
-    m_servname = serv;
     m_cinfo = info;
     m_needhost = need_host1;
     next = wxURL::ms_protocols;
@@ -90,40 +90,72 @@ bool wxProtocol::Reconnect()
 // Read a line from socket
 // ----------------------------------------------------------------------------
 
-// TODO ReadLine() should use buffers private to wxProtocol for efficiency!
-
-// static
-wxProtocolError wxProtocol::ReadLine(wxSocketBase *socket, wxString& result)
+/* static */
+wxProtocolError wxProtocol::ReadLine(wxSocketBase *sock, wxString& result)
 {
-    result.Empty();
-    char ch, chLast = '\0';
-    while ( !socket->Read(&ch, sizeof(ch)).Error() )
+    static const int LINE_BUF = 4095;
+
+    result.clear();
+
+    wxCharBuffer buf(LINE_BUF);
+    char *pBuf = buf.data();
+    while ( sock->WaitForRead() )
     {
-        switch ( ch )
+        // peek at the socket to see if there is a CRLF
+        sock->Peek(pBuf, LINE_BUF);
+
+        size_t nRead = sock->LastCount();
+        if ( !nRead && sock->Error() )
+            return wxPROTO_NETERR;
+
+        // look for "\r\n" paying attention to a special case: "\r\n" could
+        // have been split by buffer boundary, so check also for \r at the end
+        // of the last chunk and \n at the beginning of this one
+        pBuf[nRead] = '\0';
+        const char *eol = strchr(pBuf, '\n');
+
+        // if we found '\n', is there a '\r' as well?
+        if ( eol )
         {
-            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' )
+            if ( eol == pBuf )
+            {
+                // check for case of "\r\n" being split
+                if ( result.empty() || result.Last() != _T('\r') )
                 {
-                    // EOL found
-                    return wxPROTO_NOERR;
+                    // ignore the stray '\n'
+                    eol = NULL;
                 }
-                //else: fall through
+                //else: ok, got real EOL
 
-            default:
-                // normal char
-                if ( chLast )
+                // read just this '\n' and restart
+                nRead = 1;
+            }
+            else // '\n' in the middle of the buffer
+            {
+                // in any case, read everything up to and including '\n'
+                nRead = eol - pBuf + 1;
+
+                if ( eol[-1] != '\r' )
                 {
-                    result += wxString::FromAscii( chLast );
-                    chLast = '\0';
+                    // as above, simply ignore stray '\n'
+                    eol = NULL;
                 }
+            }
+        }
+
+        sock->Read(pBuf, nRead);
+        if ( sock->LastCount() != nRead )
+            return wxPROTO_NETERR;
+
+        pBuf[nRead] = '\0';
+        result += wxString::FromAscii(pBuf);
+
+        if ( eol )
+        {
+            // remove trailing "\r\n"
+            result.RemoveLast(2);
 
-                result += wxString::FromAscii( ch );
+            return wxPROTO_NOERR;
         }
     }