[31] | 1 | /************************************************************************************ |
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| 2 | * Copyright (C) 2008 by Politehnica University of Bucharest and Rutgers University |
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| 3 | * All rights reserved. |
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| 4 | * Refer to LICENSE for terms and conditions of use. |
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| 5 | ***********************************************************************************/ |
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| 6 | package vnsim.map.utils; |
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| 7 | |
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| 8 | |
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| 9 | import java.util.*; |
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| 10 | |
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| 11 | import vnsim.map.object.*; |
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| 12 | |
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| 13 | |
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| 14 | /** |
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| 15 | * @author Victor-Radu |
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| 16 | */ |
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| 17 | |
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| 18 | public class ParsingUtil { |
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| 19 | |
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| 20 | public static Road parseRoad(byte[] buffer){ |
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| 21 | //parses a record in RT1 format into a road object |
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| 22 | Road r = new Road(); |
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| 23 | Point p; |
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| 24 | |
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| 25 | if (buffer[19] != ' ' && buffer[55] == 'A'){ |
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| 26 | // it is a road with non-empty name field |
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| 27 | // we care only obut roads |
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| 28 | try{ |
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| 29 | r.setId( Long.parseLong(new String(buffer, 5, 10).trim()) ); |
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| 30 | }catch (NumberFormatException e){ |
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| 31 | e.printStackTrace(); |
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| 32 | return null; |
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| 33 | } |
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| 34 | r.setName( new String(buffer, 19, 30) ); |
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| 35 | r.setType( new String(buffer, 49, 4)); |
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| 36 | r.setDirectionPrefix( (new String(buffer, 17, 2)).getBytes()); |
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| 37 | r.setDirectionSuffix( (new String(buffer, 53, 2)).getBytes()); |
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| 38 | r.setRoadinfo( (new String(buffer, 55, 3)).getBytes()); |
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| 39 | //start and end point |
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| 40 | p = parsePoint(new String(buffer, 190, 19).getBytes()); |
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| 41 | if (p!= null) |
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| 42 | r.points.add(p); |
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| 43 | else return null; |
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| 44 | p = parsePoint(new String(buffer, 209, 19).getBytes()); |
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| 45 | if (p!= null) |
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| 46 | r.points.add(p); |
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| 47 | else return null; |
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| 48 | return r; |
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| 49 | } |
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| 50 | return null; |
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| 51 | } |
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| 52 | |
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| 53 | public static Point parsePoint(byte[] buffer){ |
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| 54 | //parses a buffer into a point (longitude 10 digits, latitude 9 digits) |
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| 55 | // input example: buffer= " -74407665+40526477" (longitude, latitude) |
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| 56 | try{ |
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| 57 | String s = new String(buffer); |
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| 58 | byte[] buf = s.replace('+', ' ').getBytes(); |
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| 59 | Point p = new Point((double)( Long.parseLong(new String(buf, 0, 10).trim())) * 1e-6f, |
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| 60 | (double)( Long.parseLong(new String(buf, 10, 9).trim())) * 1e-6f); |
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| 61 | return p; |
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| 62 | }catch (NumberFormatException e){ |
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| 63 | e.printStackTrace(); |
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| 64 | return null; |
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| 65 | } |
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| 66 | } |
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| 67 | } |
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