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/*
* xfirelib - C++ Library for the xfire protocol.
* Copyright (C) 2006 by
* Beat Wolf <asraniel@fryx.ch> / http://gfire.sf.net
* Herbert Poul <herbert.poul@gmail.com> / http://goim.us
* http://xfirelib.sphene.net
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "stdafx.h"
#include <string>
#include "variablevalue.h"
#include "xdebug.h"
#include "math.h" // for pow(..)
namespace xfirelib {
using namespace std;
VariableValue::VariableValue() {
value = 0;
}
VariableValue::~VariableValue() {
if(value)
delete[] value;
}
void VariableValue::setName(std::string name){
this->name = name;
}
void VariableValue::setValueLength(int valueLength){
this->valueLength = valueLength;
}
void VariableValue::setValue( char * value) {
if(this->value) delete[] value;
this->value = value;
}
void VariableValue::setValue( std::string value ) {
const char *val = value.c_str();
setValue( val, value.length() );
}
void VariableValue::setValue( const char *value, int valueLength ) {
this->value = new char[valueLength];
memcpy( this->value, value, valueLength );
this->valueLength = valueLength;
}
void VariableValue::setValueFromLong( long value, int bytes ) {
this->valueLength = bytes;
this->value = new char[bytes];
for(int i = 0 ; i < bytes ; i++) {
this->value[i] = value % 256;
value = value / 256;
}
}
std::string VariableValue::getName(){
return name;
}
int VariableValue::getValueLength(){
return valueLength;
}
char* VariableValue::getValue(){
return value;
}
long VariableValue::getValueAsLong() {
long intVal = 0;
for(int i = 0 ; i < valueLength ; i++) {
intVal += ((unsigned char)value[i]) * myPow(256,i);
}
return intVal;
}
long VariableValue::myPow(int x, int y) {
long r = 1;
for(int i = 0 ; i < y ; i++) r *= x;
return r;
}
int VariableValue::readName(char *packet, int index) {
int read = 0;
int nameLength = packet[index];
read++;
char* namestr=new char[nameLength+1];
namestr[nameLength]=0;
memcpy(namestr,packet+index+read,nameLength);
name = string(namestr);
read+=nameLength;
return read;
}
int VariableValue::readValue(char *packet, int index, int length,int ignoreZeroAfterLength) {
int read = 0;
valueLength = length;
if(valueLength < 0) {
valueLength = (unsigned char)packet[index+read];read++;
if(ignoreZeroAfterLength) read++;
}
if(value) delete[] value;
value = new char[valueLength];
memcpy(value,packet+index+read,valueLength);
read+=valueLength;
return read;
}
/*TODO: this cant work, attLength is always 0, needs to be fixed*/
/* int VariableValue::readFixValue(char *packet, int index, int packetLength, int valueLength) {
VariableValue *value = this;
int nameLength = packet[index];
int i = 1;
int attLengthLength = 0;
int attLength = 0;
string name;
for(; i <= nameLength;i++){
name += packet[index+i];
}
value->setName(name);
index += i;
index++; //ignore next value
value->setValueLength(valueLength);
char *att = new char[attLength];
index += i+1;
for(i = 0; i < attLength;i++){
att[i] = packet[index+i];
}
index += i;
value->setValue(att);
return index;
}*/
int VariableValue::readVariableValue(char *packet, int index, int packetLength){
VariableValue *value = this;
int nameLength = packet[index];
int i = 1;
int attLengthLength = 0;
int attLength = 0;
string name;
for(; i <= nameLength;i++){
name += packet[index+i];
}
value->setName(name);
index += i;
attLengthLength = packet[index];
index++;
for(i = 0; i < attLengthLength;i++){
attLength += (unsigned char)packet[index+i];/*todo: make it work if length is longer than 1 byte*/
}
value->setValueLength(attLength);
char *att = new char[attLength];
index += i+1;
for(i = 0; i < attLength;i++){
att[i] = packet[index+i];
}
value->setValue(att);
index += i;
return index;
}
int VariableValue::writeName(char *buf, int index) {
int len = name.length();
buf[index] = len;
memcpy(buf+index+1,name.c_str(),len);
return len+1;
}
int VariableValue::writeValue(char *buf, int index) {
memcpy(buf+index,value,valueLength);
return valueLength;
}
};
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