| #ifndef _PRAGMA_COPYRIGHT_ |
| #define _PRAGMA_COPYRIGHT_ |
| #pragma comment(copyright, "%Z% %I% %W% %D% %T%\0") |
| #endif /* _PRAGMA_COPYRIGHT_ */ |
| /**************************************************************************** |
| |
| * Copyright (c) 2008, 2010 IBM Corporation. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0s |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| |
| Classes: DshPacker |
| |
| Description: Wrapper for various kind of information. |
| |
| Author: Nicole Nie, Tu HongJ, Liu Wei |
| |
| History: |
| Date Who ID Description |
| -------- --- --- ----------- |
| 10/29/08 nieyy Initial code (D154050) |
| |
| ****************************************************************************/ |
| |
| #include "dsh_packer.hpp" |
| #include <stdlib.h> |
| #include <arpa/inet.h> |
| #include <string.h> |
| |
| DshPacker::DshPacker() |
| { |
| msgBuf = (char *)malloc(1); |
| msgPtr = msgBuf; |
| msgLen = 0; |
| } |
| |
| char* DshPacker::getPackedMsg() |
| { |
| return msgBuf; |
| } |
| |
| int DshPacker::getPackedMsgLen() |
| { |
| return msgLen; |
| } |
| |
| void DshPacker::packInt(int value) |
| { |
| int size = htonl(value); |
| |
| int oldLen = msgLen; |
| msgLen += sizeof(size); |
| msgBuf = (char *)realloc(msgBuf, msgLen); |
| msgPtr = msgBuf + oldLen; |
| |
| memcpy(msgPtr, &size, sizeof(size)); |
| msgPtr += sizeof(size); |
| } |
| |
| void DshPacker::packStr(char *value) |
| { |
| int len = strlen(value) + 1; |
| packInt(len); |
| |
| int oldLen = msgLen; |
| msgLen += len; |
| msgBuf = (char *)realloc(msgBuf, msgLen); |
| msgPtr = msgBuf + oldLen; |
| |
| memcpy(msgPtr, value, len); |
| msgPtr += len; |
| } |
| |
| void DshPacker::setPackedMsg(char * msg) |
| { |
| msgBuf = msg; |
| msgPtr = msgBuf; |
| } |
| |
| int DshPacker::unpackInt() |
| { |
| int size, value; |
| memcpy(&size, msgPtr, sizeof(size)); |
| |
| value = ntohl(size); |
| msgPtr += sizeof(size); |
| |
| return value; |
| } |
| |
| char* DshPacker::unpackStr() |
| { |
| int len; |
| char *value; |
| |
| len = unpackInt(); |
| value = msgPtr; |
| msgPtr += len; |
| |
| return value; |
| } |
| |