Mercurial > dive4elements > river
comparison flys-backend/src/main/java/de/intevation/flys/importer/parsers/LineParser.java @ 2815:3febaed762b8
Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
flys-backend/trunk@4232 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Fri, 13 Apr 2012 09:57:37 +0000 |
| parents | |
| children | f63b39799d2d |
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| 2814:bfd6a7ef0ad5 | 2815:3febaed762b8 |
|---|---|
| 1 package de.intevation.flys.importer.parsers; | |
| 2 | |
| 3 import java.io.File; | |
| 4 | |
| 5 import java.util.Calendar; | |
| 6 import java.util.Date; | |
| 7 import java.util.Locale; | |
| 8 | |
| 9 import java.io.IOException; | |
| 10 import java.io.LineNumberReader; | |
| 11 import java.io.FileInputStream; | |
| 12 import java.io.InputStreamReader; | |
| 13 | |
| 14 import org.apache.log4j.Logger; | |
| 15 | |
| 16 | |
| 17 public abstract class LineParser { | |
| 18 | |
| 19 private static final Logger log = Logger.getLogger(LineParser.class); | |
| 20 | |
| 21 public static final String ENCODING = "ISO-8859-1"; | |
| 22 | |
| 23 public static final Locale DEFAULT_LOCALE = Locale.GERMAN; | |
| 24 | |
| 25 public static final String START_META_CHAR = "#"; | |
| 26 public static final String SEPERATOR_CHAR = ";"; | |
| 27 | |
| 28 | |
| 29 protected abstract void handleLine(String line); | |
| 30 | |
| 31 protected abstract void reset(); | |
| 32 | |
| 33 protected abstract void finish(); | |
| 34 | |
| 35 | |
| 36 /** | |
| 37 * This method reads each line of <i>file</i>. At the beginning, | |
| 38 * <i>reset()</i> is called; afterwars for each line <i>handleLine()</i> is | |
| 39 * called; at the end <i>finish</i> is called. | |
| 40 * | |
| 41 * @param file The file which should be parsed. | |
| 42 */ | |
| 43 public void parse(File file) throws IOException { | |
| 44 log.info("Parsing file '" + file + "'"); | |
| 45 | |
| 46 reset(); | |
| 47 | |
| 48 LineNumberReader in = null; | |
| 49 try { | |
| 50 in = | |
| 51 new LineNumberReader( | |
| 52 new InputStreamReader( | |
| 53 new FileInputStream(file), ENCODING)); | |
| 54 | |
| 55 String line = null; | |
| 56 while ((line = in.readLine()) != null) { | |
| 57 if ((line = line.trim()).length() == 0) { | |
| 58 continue; | |
| 59 } | |
| 60 | |
| 61 handleLine(line); | |
| 62 } | |
| 63 } | |
| 64 finally { | |
| 65 if (in != null) { | |
| 66 in.close(); | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 finish(); | |
| 71 } | |
| 72 | |
| 73 | |
| 74 protected static String stripMetaLine(String line) { | |
| 75 String tmp = line.substring(1, line.length()); | |
| 76 | |
| 77 if (tmp.startsWith(" ")) { | |
| 78 return tmp.substring(1, tmp.length()); | |
| 79 } | |
| 80 else { | |
| 81 return tmp; | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 | |
| 86 public static Date getDateFromYear(int year) { | |
| 87 Calendar cal = Calendar.getInstance(); | |
| 88 cal.set(year, 0, 1); | |
| 89 | |
| 90 return cal.getTime(); | |
| 91 } | |
| 92 } | |
| 93 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |