Mercurial > dive4elements > river

annotate backend/src/main/java/org/dive4elements/river/importer/parsers/StaFileParser.java @ 6333:b58a71a5720c

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Backend: Removed cruft code
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 14 Jun 2013 12:30:38 +0200
parents 53d08f33d094
children 82b8bfb47260
rev   line source
5844
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.importer.parsers;
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10
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11 import java.io.File;
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12 import java.io.IOException;
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13 import java.io.LineNumberReader;
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14 import java.io.FileInputStream;
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15 import java.io.InputStreamReader;
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16
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17 import java.math.BigDecimal;
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18
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19 import java.util.regex.Pattern;
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20 import java.util.regex.Matcher;
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21
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22 import java.util.HashMap;
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23 import java.util.ArrayList;
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24
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25 import org.apache.log4j.Logger;
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26
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27 import org.dive4elements.river.importer.ImportMainValueType;
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28 import org.dive4elements.river.importer.ImportMainValue;
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29 import org.dive4elements.river.importer.ImportNamedMainValue;
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30 import org.dive4elements.river.importer.ImportGauge;
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31
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32 public class StaFileParser
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33 {
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34 private static Logger log = Logger.getLogger(StaFileParser.class);
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35
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36 public static final String ENCODING = "ISO-8859-1";
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37
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38 public static final String TYPES =
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39 System.getProperty("flys.backend.main.value.types", "QWTD");
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40
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41 public static final Pattern QWTD_ =
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42 Pattern.compile("\\s*([^\\s]+)\\s+([^\\s]+)\\s+([" +
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43 Pattern.quote(TYPES) + "]).*");
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44
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45
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46 public StaFileParser() {
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47 }
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48
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49 public boolean parse(ImportGauge gauge) throws IOException {
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50
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51 File file = gauge.getStaFile();
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52
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53 log.info("parsing STA file: " + file);
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54 LineNumberReader in =
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55 new LineNumberReader(
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56 new InputStreamReader(
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57 new FileInputStream(file), ENCODING));
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58
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59 try {
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60 String line = in.readLine();
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61
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62 if (line == null) {
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63 log.warn("STA file is empty.");
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64 return false;
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65 }
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66
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67 if (line.length() < 37) {
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68 log.warn("First line in STA file is too short.");
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69 return false;
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70 }
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71
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72 String gaugeName = line.substring(16, 35).trim();
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73
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74 Long gaugeNumber = null;
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75
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76 String gaugeNumberString = line.substring(8, 16).trim();
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77
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78 try {
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79 gaugeNumber = Long.parseLong(gaugeNumberString);
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80 }
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81 catch (NumberFormatException nfe) {
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82 log.warn("STA: gauge number '" + gaugeNumberString +
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83 "' is not a valid long number.");
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84 }
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85
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86 gauge.setName(gaugeName);
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87 gauge.setOfficialNumber(gaugeNumber);
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88
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89 if (log.isDebugEnabled()) {
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90 log.debug(
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91 "name/number: '" + gaugeName + "' '" + gaugeNumber + "'");
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92 }
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93
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94 String [] values = line.substring(38).trim().split("\\s+", 2);
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95
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96 if (values.length < 2) {
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97 log.warn("STA: Not enough columns for aeo and datum.");
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98 }
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99 try {
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100 gauge.setAeo(new BigDecimal(values[0].replace(",", ".")));
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101 gauge.setDatum(new BigDecimal(values[1].replace(",", ".")));
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102 }
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103 catch (NumberFormatException nfe) {
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104 log.warn("STA: cannot parse aeo or datum.");
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105 return false;
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106 }
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107
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108 line = in.readLine();
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109
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110 if (line == null) {
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111 log.warn("STA file has not enough lines");
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112 return false;
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113 }
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114
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115 if (line.length() < 36) {
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116 log.warn("STA: second line is too short");
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117 return false;
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118 }
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119
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120 try {
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121 gauge.setStation(
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122 new BigDecimal(line.substring(29, 36).trim()));
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123 }
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124 catch (NumberFormatException nfe) {
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125 log.warn("STA: parsing of the datum of the gauge failed");
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126 return false;
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127 }
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128
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129 // overread the next six lines
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130 for (int i = 0; i < 6; ++i) {
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131 if ((line = in.readLine()) == null) {
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132 log.warn("STA file is too short");
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133 return false;
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134 }
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135 }
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136
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137 HashMap<String, ImportMainValueType> types =
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138 new HashMap<String, ImportMainValueType>();
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139
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140 ArrayList<ImportNamedMainValue> namedMainValues =
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141 new ArrayList<ImportNamedMainValue>();
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142
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143 ArrayList<ImportMainValue> mainValues =
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144 new ArrayList<ImportMainValue>();
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145
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146 while ((line = in.readLine()) != null) {
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147 Matcher m = QWTD_.matcher(line);
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148 if (m.matches()) {
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149 BigDecimal value;
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150 try {
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151 value = new BigDecimal(m.group(2).replace(",", "."));
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152 }
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153 catch (NumberFormatException nfe) {
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154 log.warn("STA: value not parseable in line "
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155 + in.getLineNumber());
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156 continue;
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157 }
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158 String typeString = m.group(3);
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159 log.debug("\t type: " + typeString);
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160 ImportMainValueType type = types.get(typeString);
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161 if (type == null) {
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162 type = new ImportMainValueType(typeString);
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163 types.put(typeString, type);
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164 }
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165 String name = m.group(1);
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166 NameAndTimeInterval nat =
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167 NameAndTimeInterval.parseName(name);
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168 ImportNamedMainValue namedMainValue =
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169 new ImportNamedMainValue(type, nat.getName());
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170 namedMainValues.add(namedMainValue);
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171
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172 ImportMainValue mainValue = new ImportMainValue(
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173 gauge,
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174 namedMainValue,
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175 value,
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176 nat.getTimeInterval());
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177
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178 mainValues.add(mainValue);
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179 }
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180 else {
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181 // TODO: treat as a comment
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182 }
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183 }
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184 gauge.setMainValueTypes(
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185 new ArrayList<ImportMainValueType>(types.values()));
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186 gauge.setNamedMainValues(namedMainValues);
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187 gauge.setMainValues(mainValues);
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188 }
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189 finally {
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190 in.close();
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191 }
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192 log.info("finished parsing STA file: " + file);
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193 return true;
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194 }
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195
1211
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196 }
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197 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org