Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/W80Parser.java @ 4750:60398ab6129a

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W80Parser: Actually add points while parsing w80 file.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 03 Jan 2013 10:00:13 +0100
parents 3028037c6293
children ee6c0f246b28
rev   line source
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ccae8b43e527 Initial empty version of W80Parser.
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1 package de.intevation.flys.importer.parsers;
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2
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94b39073f0f7 Moved EpsilonComparator to utils package becaus its not only useful for TIM parsing. Used EpsilonComparator in DA60 and DA66 case. Maybe TODO: Use in PRF, too.
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3 import de.intevation.artifacts.common.utils.FileTools;
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4
94b39073f0f7 Moved EpsilonComparator to utils package becaus its not only useful for TIM parsing. Used EpsilonComparator in DA60 and DA66 case. Maybe TODO: Use in PRF, too.
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5 import de.intevation.flys.importer.XY;
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6
94b39073f0f7 Moved EpsilonComparator to utils package becaus its not only useful for TIM parsing. Used EpsilonComparator in DA60 and DA66 case. Maybe TODO: Use in PRF, too.
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7 import de.intevation.flys.utils.EpsilonComparator;
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8 import de.intevation.flys.importer.parsers.tim.Coordinate;
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9
94b39073f0f7 Moved EpsilonComparator to utils package becaus its not only useful for TIM parsing. Used EpsilonComparator in DA60 and DA66 case. Maybe TODO: Use in PRF, too.
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10 import java.io.File;
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11 import java.io.IOException;
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12
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13 import java.util.ArrayList;
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14 import java.util.List;
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15 import java.util.Map;
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16 import java.util.TreeMap;
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17
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18 import java.util.regex.Pattern;
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19
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20 import org.apache.log4j.Logger;
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21
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22
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23 /**
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24 * To create cross-sections, generate: Map<double,list<xy>> from files
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25 * in da66 format.
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26 */
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27 public class W80Parser extends LineParser implements CrossSectionParser
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28 {
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29 /** Private logger. */
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30 private static Logger logger = Logger.getLogger(W80Parser.class);
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31
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32 /** Regex to match lines of files in da66 format. */
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33 private static final Pattern LINE_PATTERN =
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34 Pattern.compile("[\\p{Alnum} ]{20}" + // ID
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35 "[0-9 ]{10} " + // GK-right
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36 "[0-9 ]{10} " + // GK-left
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37 "[0-9 ]{6} " + // date
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38 "[0-9 ]{1} " + // kind of exactness of measurement
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39 "[0-9 ]{7} " + // height
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40 "[0-9 ]{6} " + // date of height
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41 "[0-9 ]{1} " + // kind of exactness of height-measurement
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42 "[0-9 ]{3} " + // kind (only for NIV-points)
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43 "[\\p{Alnum} ]{6} " + // date of point decline
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44 "[\\p{Alnum} ]{8} " + // note for point
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45 "[0-9 ]{2} " // actuality
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46 );
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47
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48 // TODO define headers regex, use regex or remove it.
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49
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50
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51 /** The current line to which add points. */
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52 private List<XY> currentLine;
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53
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54
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55 /** Data collected so far, last element will be currentLine. */
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56 protected Map<Double, List<XY>> data;
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57
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58
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59 /** Anchor to project to. */
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60 private class Anchor {
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61 private Coordinate coordinate;
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62 private double station;
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63 public Anchor(Coordinate anchor, double station) {
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64 this.coordinate = anchor;
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65 this.station = station;
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66 }
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67 public double getStation() {
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68 return station;
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69 }
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70 public Coordinate getCoordinate() {
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71 return coordinate;
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72 }
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73 }
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74
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75
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76 private Anchor anchor;
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77
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78
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79 /** Trivial constructor. */
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80 public W80Parser() {
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81 data = new TreeMap<Double, List<XY>>(EpsilonComparator.CMP);
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82 }
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83
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84
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85 /** Get the description of the cross section parsed. */
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86 @Override
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87 public String getDescription() {
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88 return FileTools.removeExtension(getFileName());
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89 }
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90
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91
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92 /** Get the year of this cross sections measurement. */
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93 @Override
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94 public Integer getYear() {
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95 return null;
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96 }
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97
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98
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99 /**
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100 * Return the data parsed.
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101 * @return map of stations (km) to list of points.
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102 */
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103 @Override
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104 public Map<Double, List<XY>> getData() {
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105 return data;
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106 }
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107
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108
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109 public void parseW80s(File root, final Callback callback) {
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110
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111 // TODO use the removeExtension/guess description and date.
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112 FileTools.walkTree(root, new FileTools.FileVisitor() {
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113 @Override
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114 public boolean visit(File file) {
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115 if (file.isFile() && file.canRead()
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116 && file.getName().toLowerCase().endsWith(".w80")
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117 && (callback == null || callback.accept(file))) {
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118 reset();
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119 try {
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120 parse(file);
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121 logger.info("parsing done");
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122 if (callback != null) {
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123 callback.parsed(W80Parser.this);
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124 }
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125 }
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126 catch (IOException ioe) {
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127 logger.error("IOException while parsing file");
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128 return false;
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129 }
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130 }
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131 return true;
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132 }
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133 });
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134 }
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135
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136
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137 /** Called before consuming first line of file. */
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138 public void reset() {
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139 data.clear();
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140 currentLine = new ArrayList<XY>();
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141 anchor = null;
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142 }
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143
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144
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145 /**
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146 * Get the Index of the last cross-section lines point.
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147 * @return last points index, -1 if not available.
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148 */
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149 private int lastPointIdx() {
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150 if (currentLine == null || currentLine.isEmpty()) {
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151 return -1;
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152 }
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153 XY lastPoint = this.currentLine.get(currentLine.size()-1);
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154 return lastPoint.getIndex();
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155 }
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156
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157 /**
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158 * Add a Point (YZ,Index) to the current cross section line.
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159 * @param y The y coordinate of new point.
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160 * @param z The z coordinate of new point.
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161 * @param idx Ignored, the parameter of new point.
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162 * @return true if point could been added, false otherwise (e.g. not
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163 * parsable y or z values.
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164 */
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165 private boolean addPoint(double gkr, double gkh, double height, String idx) {
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166 // Calculate distance between this and anchor-point.
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167 double dx = gkr - anchor.getCoordinate().getX();
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168 double dy = gkh - anchor.getCoordinate().getY();
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169 double d = Math.sqrt(dx * dx + dy * dy);
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170
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171 // We ignore idx, and increment instead.
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172 int index;
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173 int lastPointIdx = lastPointIdx();
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174 if (lastPointIdx <= 0) {
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175 index = 1;
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176 } else {
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177 index = lastPointIdx + 1;
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178 }
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179
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180 currentLine.add(new XY(d, height/1000d, index));
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181 return true;
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182 }
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183
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184
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185 /**
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186 * Called for each line. Try to extract info from a da66 line.
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187 */
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188 @Override
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189 protected void handleLine(int lineNum, String line) {
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190 String pointId = line.substring(0,20);
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191 String station = line.substring(9,16);
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192 String pointIndex = line.substring(16,21);
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193 // For GK, first seven digits are of interest.
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194 String gkRight = line.substring(20,30);
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195 String gkHigh = line.substring(30,40);
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196 String date = line.substring(40,46);
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197 String locType = line.substring(46,47);
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198 String height = line.substring(47,54);
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199 String dateH = line.substring(54,60);
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200 String typeH = line.substring(60,61);
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201 String kindH = line.substring(61,64);
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202 String dateDec = line.substring(64,70);
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203 String note = line.substring(70,78);
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204 String actual = line.substring(78);
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205 double stationKm = Double.parseDouble(station) / 1000d;
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206 double gkRightKm = Double.parseDouble(gkRight.substring(0,7));
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207 double gkHighKm = Double.parseDouble(gkHigh.substring(0,7));
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208 double heightM = Double.parseDouble(height);
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209
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210 // New (or first) line.
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211 if (anchor == null || anchor.getStation() != stationKm) {
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212 this.anchor = new Anchor(new Coordinate(gkRightKm, gkHighKm, heightM), stationKm);
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213 currentLine = new ArrayList<XY>();
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214 data.put(stationKm, currentLine);
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215 currentLine.add(new XY(0d, heightM,0));
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216 }
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217 else {
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218 addPoint(gkRightKm, gkHighKm, heightM, pointIndex);
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219 }
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220 }
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221
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222
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223 /** Called when file is fully consumed. */
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224 @Override
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225 protected void finish() {
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226 logger.info("Parsed " + data.size() + " lines");
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227 }
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228
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229
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230 /** Parses files given as arguments. */
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231 public static void main(String [] args) {
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232
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233 W80Parser parser = new W80Parser();
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234
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235 logger.warn("Start parsing files.");
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236 for (String arg: args) {
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237 parser.parseW80s(new File(arg), null);
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238 logger.warn("Parsing a file.");
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239 }
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240 logger.error("Finished parsing files.");
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241 }
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242 }
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243 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org