improve pretty-printing output.

src/devices/wifi/wifi-mac-header.cc

@@ -786,11 +786,10 @@ WifiMacHeader::GetInstanceTypeId (void) const
 void 
 WifiMacHeader::PrintFrameControl (std::ostream &os) const
 {
-  os << "("
-     << "ToDS=" << m_ctrlToDs << ", FromDS=" << m_ctrlFromDs 
+  os << "ToDS=" << m_ctrlToDs << ", FromDS=" << m_ctrlFromDs 
      << ", MoreFrag=" << m_ctrlMoreFrag << ", Retry=" << m_ctrlRetry 
      << ", MoreData=" << m_ctrlMoreData 
-     << ")";
+    ;
 }
 
 void 

src/internet-node/arp-header.cc

@@ -102,24 +102,20 @@ ArpHeader::Print (std::ostream &os) const
 {
   if (IsRequest ()) 
     {
-      os << "("
-         << "request "
+      os << "request "
          << "source mac: " << m_macSource << " "
          << "source ipv4: " << m_ipv4Source << " "
          << "dest ipv4: " << m_ipv4Dest
-         << ")"
         ;
     } 
   else 
     {
       NS_ASSERT (IsReply ());
-      os << "("
-         << "reply " 
+      os << "reply " 
          << "source mac: " << m_macSource << " "
          << "source ipv4: " << m_ipv4Source << " "
          << "dest mac: " << m_macDest << " "
          << "dest ipv4: " <<m_ipv4Dest
-         << ")"
         ;
     }
 }

src/internet-node/ipv4-header.cc

@@ -220,14 +220,13 @@ Ipv4Header::Print (std::ostream &os) const
     {
       flags = "XX";
     }
-  os << "("
-     << "tos 0x" << std::hex << m_tos << std::dec << " "
+  os << "tos 0x" << std::hex << m_tos << std::dec << " "
      << "ttl " << m_ttl << " "
      << "id " << m_identification << " "
      << "offset " << m_fragmentOffset << " "
      << "flags [" << flags << "] "
      << "length: " << (m_payloadSize + 5 * 4)
-     << ") "
+     << " " 
      << m_source << " > " << m_destination
     ;
 }

src/internet-node/udp-header.cc

@@ -110,9 +110,8 @@ UdpHeader::GetInstanceTypeId (void) const
 void 
 UdpHeader::Print (std::ostream &os) const
 {
-  os << "(" 
-     << "length: " << m_payloadSize + GetSerializedSize ()
-     << ") "
+  os << "length: " << m_payloadSize + GetSerializedSize ()
+     << " " 
      << m_sourcePort << " > " << m_destinationPort
     ;
 }

src/node/ethernet-header.cc

@@ -120,7 +120,7 @@ EthernetHeader::Print (std::ostream &os) const
   // ethernet, right ?
   if (m_enPreambleSfd)
     {
-      os << " preamble/sfd=" << m_preambleSfd << ",";
+      os << "preamble/sfd=" << m_preambleSfd << ",";
     }
 
   os << " length/type=0x" << std::hex << m_lengthType << std::dec

src/node/ethernet-trailer.cc

@@ -103,7 +103,7 @@ EthernetTrailer::GetInstanceTypeId (void) const
 void 
 EthernetTrailer::Print (std::ostream &os) const
 {
-  os << " fcs=" << m_fcs;
+  os << "fcs=" << m_fcs;
 }
 uint32_t 
 EthernetTrailer::GetSerializedSize (void) const

src/node/llc-snap-header.cc

@@ -64,11 +64,10 @@ LlcSnapHeader::GetInstanceTypeId (void) const
 void 
 LlcSnapHeader::Print (std::ostream &os) const
 {
-  os << "(type 0x";
+  os << "type 0x";
   os.setf (std::ios::hex, std::ios::basefield);
   os << m_etherType;
   os.setf (std::ios::dec, std::ios::basefield);
-  os << ")";
 }
 
 void