Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/utils/DateGuesser.java @ 4631:d35d316049e8

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A little optimization and handle the case that there are duplicates in the values.
author Sascha L. Teichmann <teichmann@intevation.de>
date Mon, 03 Dec 2012 21:16:15 +0100
parents 2e18e12fac11
children 8195396b23ce
rev   line source
2357
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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1 package de.intevation.flys.utils;
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2
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3 /**
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4 * Copyright (c) 2006 by Intevation GmbH
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5 *
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6 * @author Sascha L. Teichmann (teichmann@intevation.de)
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7 *
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8 * This program is free software under the LGPL (&gt;=v2.1)
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9 * Read the file LGPL coming with FLYS for details.
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10 */
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11
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12 import java.util.Date;
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13 import java.util.Calendar;
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14
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15 import java.util.regex.Pattern;
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16 import java.util.regex.Matcher;
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17
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18 public final class DateGuesser {
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19 public static final String [] MONTH = {
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20 "jan", "feb", "mrz", "apr", "mai", "jun",
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21 "jul", "aug", "sep", "okt", "nov", "dez"
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22 };
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23
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24 public static final int guessMonth(String s) {
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25 s = s.toLowerCase();
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26 for (int i = 0; i < MONTH.length; ++i)
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27 if (MONTH[i].equals(s)) {
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28 return i;
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29 }
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30 return -1;
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31 }
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32
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33 public static final Pattern YYYY_MM_DD =
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34 Pattern.compile("^(\\d{4})-(\\d{2})-(\\d{2})$");
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35
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36 public static final Pattern DD_MM_YYYY =
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37 Pattern.compile("^(\\d{1,2})\\.(\\d{1,2})\\.(\\d{2,4})$");
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38
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39 public static final Pattern MMM_YYYY =
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40 Pattern.compile("^(\\d{0,2})\\.?(\\w{3})\\.?(\\d{2,4})$");
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41
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42 public static final Pattern GARBAGE_YYYY =
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43 Pattern.compile("^\\D*(\\d{2,4})$");
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44
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45 public static final Pattern YYYY_MM_DDThh_mm =
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46 Pattern.compile("^(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2})$");
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47
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48 public static final Pattern YYYY_MM_DDThh_mm_ss =
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49 Pattern.compile("^(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2}):(\\d{2})$");
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50
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51 public static final Pattern DD_MM_YYYYThh_mm =
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52 Pattern.compile("^(\\d{1,2})\\.(\\d{1,2})\\.(\\d{2,4})T(\\d{1,2}):(\\d{2})$");
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53
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54 public static final Pattern DD_MM_YYYYThh_mm_ss =
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55 Pattern.compile("^(\\d{1,2})\\.(\\d{1,2})\\.(\\d{2,4})T(\\d{1,2}):(\\d{2}):(\\d{2})$");
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56
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57 private DateGuesser() {
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58 }
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59
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60 public static final int calendarMonth(String month) {
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61 return calendarMonth(Integer.parseInt(month));
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62 }
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63
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64 public static final int calendarMonth(int month) {
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65 return Math.max(Math.min(month-1, 11), 0);
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66 }
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67
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68 public static Date guessDate(String s) {
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69 if (s == null || (s = s.trim()).length() == 0) {
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70 throw new IllegalArgumentException();
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71 }
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72
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73 Matcher m;
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74
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75 m = YYYY_MM_DD.matcher(s);
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76
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77 if (m.matches()) {
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78 Calendar cal = Calendar.getInstance();
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79 String year = m.group(1);
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80 String month = m.group(2);
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81 String day = m.group(3);
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82 cal.set(
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83 Integer.parseInt(year),
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84 calendarMonth(month),
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85 Integer.parseInt(day),
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86 12, 0, 0);
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87 return cal.getTime();
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88 }
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89
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90 m = DD_MM_YYYY.matcher(s);
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91
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92 if (m.matches()) {
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93 Calendar cal = Calendar.getInstance();
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94 String year = m.group(3);
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95 String month = m.group(2);
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96 String day = m.group(1);
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97 cal.set(
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98 Integer.parseInt(year) + (year.length() == 2 ? 1900 : 0),
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99 calendarMonth(month),
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100 Integer.parseInt(m.group(1)),
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101 12, 0, 0);
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102 return cal.getTime();
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103 }
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104
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105 m = MMM_YYYY.matcher(s);
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106
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107 if (m.matches()) {
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108 int month = guessMonth(m.group(2));
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109 if (month >= 0) {
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110 Calendar cal = Calendar.getInstance();
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111 String year = m.group(3);
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112 String day = m.group(1);
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113 cal.set(
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114 Integer.parseInt(year) + (year.length() == 2 ? 1900 : 0),
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115 month,
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116 day.length() == 0 ? 15 : Integer.parseInt(day),
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117 12, 0, 0);
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118 return cal.getTime();
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119 }
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120 }
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121
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122 m = YYYY_MM_DDThh_mm.matcher(s);
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123
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124 if (m.matches()) {
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125 Calendar cal = Calendar.getInstance();
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126 String year = m.group(1);
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127 String month = m.group(2);
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128 String day = m.group(3);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
129 String hour = m.group(4);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
130 String minute = m.group(5);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
131 cal.set(
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 Integer.parseInt(year),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 calendarMonth(month),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134 Integer.parseInt(day),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
135 Integer.parseInt(hour),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
136 Integer.parseInt(minute),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 0
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
138 );
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
139 return cal.getTime();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
140 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
141
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
142 m = YYYY_MM_DDThh_mm_ss.matcher(s);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
143
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
144 if (m.matches()) {
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
145 Calendar cal = Calendar.getInstance();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
146 String year = m.group(1);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
147 String month = m.group(2);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
148 String day = m.group(3);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
149 String hour = m.group(4);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
150 String minute = m.group(5);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
151 String second = m.group(6);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
152 cal.set(
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
153 Integer.parseInt(year),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
154 calendarMonth(month),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
155 Integer.parseInt(day),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
156 Integer.parseInt(hour),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
157 Integer.parseInt(minute),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
158 Integer.parseInt(second)
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
159 );
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
160 return cal.getTime();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
161 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
163 m = DD_MM_YYYYThh_mm.matcher(s);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
164
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
165 if (m.matches()) {
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
166 Calendar cal = Calendar.getInstance();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
167 String year = m.group(3);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
168 String month = m.group(2);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
169 String day = m.group(1);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
170 String hour = m.group(4);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
171 String minute = m.group(5);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
172 cal.set(
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
173 Integer.parseInt(year) + (year.length() == 2 ? 1900 : 0),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
174 calendarMonth(month),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
175 Integer.parseInt(day),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
176 Integer.parseInt(hour),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
177 Integer.parseInt(minute),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
178 0
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
179 );
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
180 return cal.getTime();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
181 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
182
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
183 m = DD_MM_YYYYThh_mm_ss.matcher(s);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
184
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
185 if (m.matches()) {
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 Calendar cal = Calendar.getInstance();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
187 String year = m.group(3);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 String month = m.group(2);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
189 String day = m.group(1);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
190 String hour = m.group(4);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191 String minute = m.group(5);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
192 String second = m.group(6);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
193 cal.set(
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
194 Integer.parseInt(year) + (year.length() == 2 ? 1900 : 0),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
195 calendarMonth(month),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
196 Integer.parseInt(day),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
197 Integer.parseInt(hour),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
198 Integer.parseInt(minute),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
199 Integer.parseInt(second)
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
200 );
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
201 return cal.getTime();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
202 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
204 m = GARBAGE_YYYY.matcher(s);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
206 if (m.matches()) {
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
207 Calendar cal = Calendar.getInstance();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
208 String year = m.group(1);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
209 cal.set(
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
210 Integer.parseInt(year) + (year.length() == 2 ? 1900 : 0),
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
211 5, // month
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
212 15, // day
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
213 12, 0, 0);
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
214 return cal.getTime();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
215 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
216
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
217 throw new IllegalArgumentException();
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
218 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
219
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
220 public static void main(String [] args) {
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
221 for (int i = 0; i < args.length; ++i) {
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
222 System.out.println(args[i] + ": " + guessDate(args[i]));
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
223 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
224 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
225 }
2e18e12fac11 Added date guesser for WST columns.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
226 // end of file
http://dive4elements.wald.intevation.org