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torben |
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#include "StdAfx.h"
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#include ".\terminalsocket.h"
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TerminalSocket::TerminalSocket(void)
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{
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m_total = 0.0;
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}
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TerminalSocket::~TerminalSocket(void)
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{
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}
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void TerminalSocket::OnReceive(int nErrorCode)
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{
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int len = this->Receive(m_buffer,1024);
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switch (m_buffer[0])
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{
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case 0:
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HelloPackage();
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break;
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case 1:
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SalesDescriptionPackage();
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break;
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case 2:
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RequestTotalPackage();
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break;
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case 3:
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RequestChangePackage();
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break;
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case 4:
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AbortLastPackage();
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break;
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case 5:
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AbortSessionPackage();
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break;
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case 6:
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GoodByePackage();
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break;
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default:
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m_message.Format("Unknown request ID: %d", m_buffer[0]);
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}
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dataRecieved.emit();
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}
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//Id 0
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void TerminalSocket::HelloPackage()
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{
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m_termid = m_buffer[1];
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char ack = 0x01;
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Send(&ack,1);
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m_message.Format("Hello (0x00) recieved with terminalID=%d", m_termid);
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}
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//Id 1
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void TerminalSocket::SalesDescriptionPackage()
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{
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CString barcode;
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char ack;
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char strlen = m_buffer[2];
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unsigned tmpprice;
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for (int i=0; i<strlen; i++)
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barcode += m_buffer[i+3];
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SalesItemLine litem;
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litem.item = FetchItemInfo(barcode);
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if (litem.item.isOk)
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{
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litem.count = m_buffer[1]; // Gem antallet
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m_items.push_back(litem);
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tmpprice = (unsigned) litem.item.price * 100;
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//generate reply
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m_buffer[0] = 0x01; //Ack;
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m_buffer[1] = tmpprice<<24;
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m_buffer[2] = tmpprice<<16;
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m_buffer[3] = tmpprice<<8;
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m_buffer[4] = tmpprice;
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m_buffer[5] = litem.item.description.GetLength();
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for (i=0; i<m_buffer[5]; i++)
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m_buffer[i+6] = litem.item.description.GetAt(i);
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Send(m_buffer, litem.item.description.GetLength()+6);
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m_message.Format("Requested barcode %s x %d (%s)", barcode, litem.count, litem.item.description);
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}
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else
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{
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ack = 0;
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Send(&ack,1);
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m_message = "Unknown barcode : ";
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m_message += barcode;
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}
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}
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//Id 2
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void TerminalSocket::RequestTotalPackage()
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{
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for (unsigned int i=0; i<m_items.size(); i++)
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{
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m_total += m_items[i].item.price * m_items[i].count;
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}
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unsigned tmpprice = (unsigned) m_total*100;
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m_buffer[0] = 0x01; //ack
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m_buffer[1] = tmpprice<<24;
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m_buffer[2] = tmpprice<<16;
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m_buffer[3] = tmpprice<<8;
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m_buffer[4] = tmpprice;
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Send(m_buffer, 5);
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}
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//Id 3
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void TerminalSocket::RequestChangePackage()
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{
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unsigned amount = m_buffer[1]>>24 + m_buffer[2]>>16 + m_buffer[3]>>8 + m_buffer[4];
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unsigned tmpprice = (unsigned) m_total;
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unsigned change = amount - tmpprice;
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m_buffer[0] = 0x01; //ack
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m_buffer[1] = change<<24;
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m_buffer[2] = change<<16;
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m_buffer[3] = change<<8;
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m_buffer[4] = change;
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Send(m_buffer, 5);
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}
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//Id 4
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void TerminalSocket::AbortLastPackage()
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{
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char ack = 0x01;
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m_items.pop_back();
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Send(&ack,1);
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}
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//Id 5
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void TerminalSocket::AbortSessionPackage()
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{
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char ack = 0x01;
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m_items.clear();
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Send(&ack,1);
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}
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//Id 6
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void TerminalSocket::GoodByePackage()
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{
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char ack = 0x01;
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Send(&ack,1);
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Sleep(1);
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Close();
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m_message = "Goodbye (0x06) recieved";
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m_items.clear();
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m_total = 0.0;
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}
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SalesItem TerminalSocket::FetchItemInfo(const CString& barcode)
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{
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SalesItem item;
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item.isOk = false;
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if (barcode == "12345670")
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{
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item.isOk = true;
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item.barcode = barcode;
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item.description = "ĝl";
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item.price = 7.65;
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}
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else if (barcode == "1234567000992")
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{
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item.isOk = true;
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item.barcode = barcode;
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item.description = "Whisky";
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item.price = 119.00;
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}
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return item;
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} |