Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/WstParser.java @ 199:ed38839a6b08

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Ported over some WST parsing stuff from desktop flys flys-backend/trunk@1538 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 22 Mar 2011 15:48:09 +0000
parents c0dcc2357106
children 88048d4f6e4d
rev   line source
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1 package de.intevation.flys.importer;
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2
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3 import java.util.ArrayList;
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4 import java.util.Map;
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5 import java.util.HashMap;
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6
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7 import java.io.File;
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8 import java.io.IOException;
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9 import java.io.LineNumberReader;
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10 import java.io.InputStreamReader;
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11 import java.io.FileInputStream;
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12
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13 import java.text.NumberFormat;
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14
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15 import org.apache.log4j.Logger;
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16
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17 import de.intevation.flys.utils.StringUtil;
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18
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19 public class WstParser
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20 {
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21 private static Logger log = Logger.getLogger(WstParser.class);
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22
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23 public static final String COLUMN_BEZ_TEXT = "column-bez-text";
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24 public static final String COLUMN_BEZ_BREITE = "column-bez-breite";
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25 public static final String COLUMN_QUELLE = "column-quelle";
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26 public static final String COLUMN_DATUM = "column-datum";
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27
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28 public static final Double UNDEFINED_ZERO = Double.valueOf(0.0);
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30 public static final String ENCODING = "ISO-8859-1";
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31
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32 public WstParser() {
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33 }
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34
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35 public void parse(File file) throws IOException {
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36
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37 log.info("Parsing WST file '" + file + "'");
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38
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39 LineNumberReader in = null;
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40 try {
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41 in =
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42 new LineNumberReader(
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43 new InputStreamReader(
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44 new FileInputStream(file), ENCODING));
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45
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46 String input;
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47 boolean first = true;
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48 int columnCount = 0;
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49
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50 String [] lsHeader = null;
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51 String [] lsBezeichner = null;
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52 String [] langBezeichner = null;
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53 int [] colNaWidths = null;
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54 String [] quellen = null;
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55 String [] daten = null;
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56 double [] aktAbfluesse = null;
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57 double [] firstAbfluesse = null;
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58
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59 double minKm = Double.MAX_VALUE;
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60 double maxKm = -Double.MAX_VALUE;
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61
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62 boolean bFirstComment = true;
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63 boolean columnHeaderChecked = false;
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64
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65 double lastKm = Double.MAX_VALUE;
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67 String einheit = "Wassserstand [NN + m]";
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68
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69 HashMap<String, Double> oldEscapeLine = null;
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70
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71 while ((input = in.readLine()) != null) {
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72 String line = input;
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73 if (first) { // fetch number of columns
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74 if ((line = line.trim()).length() == 0) {
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75 continue;
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76 }
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77 try {
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78 columnCount = Integer.parseInt(line);
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79 if (columnCount <= 0) {
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80 throw new NumberFormatException(
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81 "number columns <= 0");
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82 }
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83 log.debug("Number of columns: " + columnCount);
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84 lsBezeichner = new String[columnCount];
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85 lsHeader = new String[columnCount];
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86 aktAbfluesse = new double[columnCount];
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87 }
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88 catch (NumberFormatException nfe) {
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89 log.warn(nfe);
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90 continue;
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91 }
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92 first = false;
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93 continue;
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94 }
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95
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96 line = line.replace(',', '.');
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97
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98 if (line.startsWith("*\u001f")) {
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99 Double [] data =
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100 parseLineAsDouble(line, columnCount, false, true);
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101
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102 if (oldEscapeLine != null) {
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103 addInterval(minKm, maxKm, oldEscapeLine);
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104 minKm = Double.MAX_VALUE;
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105 maxKm = -Double.MAX_VALUE;
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106 }
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107
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108 oldEscapeLine = new HashMap<String, Double>();
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109 for (int i = 0; i < columnCount; ++i) {
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110 if (lsHeader[i] != null) {
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111 oldEscapeLine.put(lsHeader[i], data[i]);
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112 }
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113 }
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114
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115 for (int i = Math.min(data.length, aktAbfluesse.length)-1;
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116 i >= 0; --i) {
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117 aktAbfluesse[i] = data[i].doubleValue();
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118 }
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119
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120 if (firstAbfluesse == null) {
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121 firstAbfluesse = (double [])aktAbfluesse.clone();
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122 }
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123 continue;
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124 }
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diff changeset
125
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diff changeset
126 if (line.startsWith("*!")) {
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parents: 197
diff changeset
127 String spezial = line.substring(2).trim();
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diff changeset
128
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diff changeset
129 if (spezial.length() == 0) {
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parents: 197
diff changeset
130 continue;
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parents: 197
diff changeset
131 }
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diff changeset
132
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diff changeset
133 if (spezial.startsWith(COLUMN_BEZ_TEXT)) {
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diff changeset
134 spezial = spezial.substring(COLUMN_BEZ_TEXT.length()).trim();
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parents: 197
diff changeset
135 if (spezial.length() == 0) {
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parents: 197
diff changeset
136 continue;
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parents: 197
diff changeset
137 }
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diff changeset
138 langBezeichner = StringUtil.splitQuoted(spezial, '"');
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parents: 197
diff changeset
139 }
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parents: 197
diff changeset
140 else if (spezial.startsWith(COLUMN_BEZ_BREITE)) {
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parents: 197
diff changeset
141 spezial = spezial.substring(COLUMN_BEZ_BREITE.length()).trim();
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diff changeset
142
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parents: 197
diff changeset
143 if (spezial.length() == 0) {
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parents: 197
diff changeset
144 continue;
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parents: 197
diff changeset
145 }
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diff changeset
146
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diff changeset
147 String[] split = spezial.split("\\s+");
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diff changeset
148
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diff changeset
149 colNaWidths = new int[split.length];
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diff changeset
150 for (int i=0; i < split.length; i++) {
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diff changeset
151 colNaWidths[i] = Integer.parseInt(split[i]);
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diff changeset
152 }
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diff changeset
153 }
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parents: 197
diff changeset
154 else if (spezial.startsWith(COLUMN_QUELLE)) {
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parents: 197
diff changeset
155 if (spezial.length() == 0) {
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parents: 197
diff changeset
156 continue;
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parents: 197
diff changeset
157 }
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diff changeset
158 quellen = StringUtil.splitQuoted(spezial, '"');
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parents: 197
diff changeset
159 }
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parents: 197
diff changeset
160 else if (spezial.startsWith(COLUMN_DATUM)) {
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parents: 197
diff changeset
161 spezial = spezial.substring(COLUMN_DATUM.length()).trim();
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parents: 197
diff changeset
162 if (spezial.length() == 0) {
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parents: 197
diff changeset
163 continue;
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parents: 197
diff changeset
164 }
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diff changeset
165 daten = StringUtil.splitQuoted(spezial, '"');
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parents: 197
diff changeset
166 }
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parents: 197
diff changeset
167 continue;
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parents: 197
diff changeset
168 }
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diff changeset
169
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diff changeset
170 if (line.startsWith("*")) {
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parents: 197
diff changeset
171 if (bFirstComment && line.length() >= 11) {
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parents: 197
diff changeset
172 String yAxis = line.substring(10).trim();
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parents: 197
diff changeset
173 if (yAxis.length() > 0) {
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parents: 197
diff changeset
174 einheit = yAxis;
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parents: 197
diff changeset
175 }
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diff changeset
176 bFirstComment = false;
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parents: 197
diff changeset
177 }
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parents: 197
diff changeset
178 continue;
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parents: 197
diff changeset
179 }
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diff changeset
180
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parents: 197
diff changeset
181 if (firstAbfluesse != null) {
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parents: 197
diff changeset
182 if (!columnHeaderChecked) {
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diff changeset
183 int unknownCount = 0;
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parents: 197
diff changeset
184 for (int i = 0; i < lsHeader.length; ++i) {
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parents: 197
diff changeset
185 if (lsBezeichner[i] == null
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diff changeset
186 || lsBezeichner[i].length() == 0) {
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parents: 197
diff changeset
187 double q = firstAbfluesse[i];
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parents: 197
diff changeset
188 if (q < 0.001) {
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parents: 197
diff changeset
189 lsBezeichner[i] =
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parents: 197
diff changeset
190 "<unbekannt#" + unknownCount + ">";
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parents: 197
diff changeset
191 ++unknownCount;
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parents: 197
diff changeset
192 }
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parents: 197
diff changeset
193 else {
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diff changeset
194 lsBezeichner[i] = "Q="+format(q);
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parents: 197
diff changeset
195 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
196 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
197 lsHeader[i] = lsBezeichner[i] + " " + einheit;
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parents: 197
diff changeset
198 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
199 columnHeaderChecked = true;
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parents: 197
diff changeset
200 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
201
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
202 Double [] data =
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parents: 197
diff changeset
203 parseLineAsDouble(line, columnCount, true, false);
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parents: 197
diff changeset
204
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
205 double kaem = data[0];
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parents: 197
diff changeset
206
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
207 if (kaem < minKm) {
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parents: 197
diff changeset
208 minKm = kaem;
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parents: 197
diff changeset
209 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
210 if (kaem > maxKm) {
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parents: 197
diff changeset
211 maxKm = kaem;
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parents: 197
diff changeset
212 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
213
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
214 lastKm = kaem;
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parents: 197
diff changeset
215
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
216 // extract values
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parents: 197
diff changeset
217 for (int i = 0; i < columnCount; ++i) {
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parents: 197
diff changeset
218 addValue(kaem, data[i].doubleValue(), lsBezeichner[i]);
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parents: 197
diff changeset
219 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
220
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
221 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
222 else { // firstAbfluesse == null
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parents: 197
diff changeset
223 if (langBezeichner != null) {
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parents: 197
diff changeset
224 lsBezeichner = StringUtil.fitArray(
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parents: 197
diff changeset
225 langBezeichner, lsBezeichner);
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parents: 197
diff changeset
226 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
227 else if (colNaWidths != null) {
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parents: 197
diff changeset
228 for (int j = 0, i = 0, N = input.length();
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parents: 197
diff changeset
229 j < colNaWidths.length && i < N;
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parents: 197
diff changeset
230 i += colNaWidths[j++]
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parents: 197
diff changeset
231 ) {
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
232 lsBezeichner[j] = input.substring(
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parents: 197
diff changeset
233 i, i+colNaWidths[j]).trim();
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parents: 197
diff changeset
234 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
235 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
236 else {
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
237 // first column begins at position 8 in line
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
238 for (int i = 8, col = 0; i < input.length(); i += 9) {
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
239 if ((i + 9) > input.length()) {
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
240 i = input.length() - 10;
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parents: 197
diff changeset
241 }
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
242 // one column header is 9 chars wide
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
243 lsBezeichner[col++] =
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
244 input.substring(i, i + 9).trim();
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
245
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
246 if (col == lsBezeichner.length) {
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
247 break;
ed38839a6b08 Ported over some WST parsing stuff from desktop flys
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parents: 197
diff changeset
248 }
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249 }
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250 }
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251 }
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252
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253 }
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254 addInterval(minKm, maxKm, oldEscapeLine);
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255 }
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256 finally {
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257 if (in != null) {
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258 in.close();
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259 }
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260 }
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261 }
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262
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263 protected void addValue(double km, double w, String columnName) {
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264 // TODO: store me!
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265 }
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266
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267 protected static String format(double value) {
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268 NumberFormat nf = NumberFormat.getInstance();
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269 nf.setMinimumFractionDigits(2);
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270 nf.setMaximumFractionDigits(2);
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271 return nf.format(value);
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272 }
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273
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274 protected void addInterval(
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275 double from,
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276 double to,
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277 Map<String, Double> values
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278 ) {
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279 log.debug("addInterval: " + from + " " + to);
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280 if (values == null) {
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281 return;
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282 }
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283 }
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284
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285 private static final Double [] parseLineAsDouble(
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286 String line,
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287 int count,
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288 boolean bStation,
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289 boolean bParseEmptyAsZero
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290 ) {
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291 String [] tokens = parseLine(line, count, bStation);
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292
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293 Double [] doubles = new Double[tokens.length];
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294
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295 for (int i = 0; i < doubles.length; ++i) {
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296 String token = tokens[i].trim();
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297 if (token.length() != 0) {
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298 doubles[i] = Double.valueOf(token);
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299 }
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300 else if (bParseEmptyAsZero) {
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301 doubles[i] = UNDEFINED_ZERO;
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302 }
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303 }
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304
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305 return doubles;
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306 }
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307
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308 private static String [] parseLine(
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309 String line,
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310 int tokenCount,
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311 boolean bParseStation
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312 ) {
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313 ArrayList<String> strings = new ArrayList<String>();
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314
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315 if (bParseStation) {
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316 if (line.length() < 8) {
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317 throw new IllegalArgumentException("station too short");
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318 }
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319 strings.add(line.substring(0, 8));
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320 }
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321
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322 int pos = 9;
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323 for (int i = 0; i < tokenCount; ++i) {
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324 if (line.length() >= pos + 8) {
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325 strings.add(line.substring(pos, pos + 8));
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326 }
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327 else {
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328 strings.add("");
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329 }
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330 pos += 9;
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331 }
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332
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333 return strings.toArray(new String[strings.size()]);
197
c0dcc2357106 Added stub for WST parser.
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334 }
c0dcc2357106 Added stub for WST parser.
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335 }
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336 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org