From fc6a4042f7fca1828f0b8e267cfd660e6fe1d40a Mon Sep 17 00:00:00 2001
From: CGantert345 <57003061+CGantert345@users.noreply.github.com>
Date: Tue, 22 Nov 2022 14:04:27 +0100
Subject: support for SSB barcodes

SSB frame implenmentation including decoding, encoding, signing and verification
---
 .../java/org/uic/barcode/ssbFrame/SsbStations.java | 116 +++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 src/main/java/org/uic/barcode/ssbFrame/SsbStations.java

(limited to 'src/main/java/org/uic/barcode/ssbFrame/SsbStations.java')

diff --git a/src/main/java/org/uic/barcode/ssbFrame/SsbStations.java b/src/main/java/org/uic/barcode/ssbFrame/SsbStations.java
new file mode 100644
index 0000000..34fbbc3
--- /dev/null
+++ b/src/main/java/org/uic/barcode/ssbFrame/SsbStations.java
@@ -0,0 +1,116 @@
+package org.uic.barcode.ssbFrame;
+
+import org.uic.barcode.asn1.uper.BitBuffer;
+import org.uic.barcode.asn1.uper.ByteBitBuffer;
+
+public class SsbStations {
+	
+	/*
+	 * Station code       1	bit	0 = Num; or 1=Bilateral AlphaNum 6Char
+
+       Numeric:
+       Station code List             4 bit 1= NRT; 2=Reservation
+	   Departure station Location 	28 bit 
+	   Arrival Station              28 bit
+
+	   AlphaNum:
+	   Departure: 30 bit
+	   Arrival =  30 bit
+
+	 */
+	
+	protected String arrivalStationCode = "      ";
+	protected String departureStationCode = "      ";
+	protected SsbStationCodeTable codeTable = SsbStationCodeTable.NRT;
+	
+	
+	
+	public int encode(int offset, byte[] bytes) {
+		
+		boolean isAlphaNumeric = false;
+		
+		BitBuffer bits = new ByteBitBuffer(bytes);
+		
+		try {
+			Integer.parseInt(arrivalStationCode);
+			Integer.parseInt(departureStationCode);
+			isAlphaNumeric  = false;
+		} catch(NumberFormatException e) {
+			isAlphaNumeric  = true;
+		}
+		bits.put(offset, isAlphaNumeric);
+		offset++;
+		
+		if (isAlphaNumeric) {
+			bits.putChar6String(offset,30, departureStationCode);
+			offset = offset + 30;
+			bits.putChar6String(offset,30, arrivalStationCode);
+			offset = offset + 30;
+		} else {
+			bits.putInteger(offset, 4, codeTable.ordinal());
+			offset = offset + 4;
+			bits.putInteger(offset, 28, Integer.parseInt(departureStationCode));
+			offset = offset + 28;
+			bits.putInteger(offset, 28, Integer.parseInt(arrivalStationCode));
+			offset = offset + 28;
+		}
+		
+		return offset;
+		
+	}
+	
+	public int decode(int offset, byte[] bytes) {
+		
+		BitBuffer bits = new ByteBitBuffer(bytes);
+		
+		boolean isAlphaNumeric = bits.get(offset);
+		offset++;
+		
+		if (isAlphaNumeric) {
+			departureStationCode = bits.getChar6String(offset,30);
+			offset = offset + 30;
+			arrivalStationCode = bits.getChar6String(offset,30);
+			offset = offset + 30;
+		} else {
+			codeTable = SsbStationCodeTable.values()[bits.getInteger(offset, 4)];
+			offset = offset + 4;
+			departureStationCode = Integer.toString(bits.getInteger(offset, 28));
+			offset = offset + 28;
+			arrivalStationCode = Integer.toString(bits.getInteger(offset, 28));
+			offset = offset + 28;
+		}
+
+		
+		
+		return offset;
+		
+	}
+
+	public String getArrivalStationCode() {
+		return arrivalStationCode;
+	}
+
+	public void setArrivalStationCode(String arrivalStationCode) {
+		this.arrivalStationCode = arrivalStationCode;
+	}
+
+	public String getDepartureStationCode() {
+		return departureStationCode;
+	}
+
+	public void setDepartureStationCode(String departureStationCode) {
+		this.departureStationCode = departureStationCode;
+	}
+
+	public SsbStationCodeTable getCodeTable() {
+		return codeTable;
+	}
+
+	public void setCodeTable(SsbStationCodeTable codeTable) {
+		this.codeTable = codeTable;
+	}
+	
+	
+	
+
+}
-- 
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