Java tutorial
/* Copyright (C) 2003-2015 JabRef contributors. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package net.sf.jabref.logic.journals; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.Reader; import java.net.URL; import java.nio.charset.Charset; import java.nio.charset.StandardCharsets; import java.util.LinkedList; import java.util.List; import java.util.Objects; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * Reads abbreviation files (property files using NAME = ABBREVIATION as a format) into a list of Abbreviations. */ public class AbbreviationParser { private final List<Abbreviation> abbreviations = new LinkedList<>(); private static final Log LOGGER = LogFactory.getLog(AbbreviationParser.class); public void readJournalListFromResource(String resourceFileName) { URL url = Objects.requireNonNull( JournalAbbreviationRepository.class.getResource(Objects.requireNonNull(resourceFileName))); try { readJournalList(new InputStreamReader(url.openStream(), StandardCharsets.UTF_8)); } catch (IOException e) { LOGGER.info("Could not read journal list from file " + resourceFileName, e); } } public void readJournalListFromFile(File file) throws FileNotFoundException { try (FileReader reader = new FileReader(Objects.requireNonNull(file))) { readJournalList(reader); } catch (FileNotFoundException e) { throw e; } catch (IOException e) { LOGGER.warn("Could not read journal list from file " + file.getAbsolutePath(), e); } } public void readJournalListFromFile(File file, Charset encoding) throws FileNotFoundException { try (FileInputStream stream = new FileInputStream(Objects.requireNonNull(file)); InputStreamReader reader = new InputStreamReader(stream, Objects.requireNonNull(encoding))) { readJournalList(reader); } catch (FileNotFoundException e) { throw e; } catch (IOException e) { LOGGER.warn("Could not read journal list from file " + file.getAbsolutePath(), e); } } /** * Read the given file, which should contain a list of journal names and their * abbreviations. Each line should be formatted as: "Full Journal Name=Abbr. Journal Name" * * @param in */ private void readJournalList(Reader in) { try (BufferedReader reader = new BufferedReader(in)) { String line; while ((line = reader.readLine()) != null) { addLine(line); } } catch (IOException ex) { LOGGER.info("Could not read journal list from file ", ex); } } private void addLine(String line) { if (line.startsWith("#")) { return; } String[] parts = line.split("="); if (parts.length == 2) { final String fullName = parts[0].trim(); final String abbrName = parts[1].trim(); // check if ((fullName.length() <= 0) || (abbrName.length() <= 0)) { return; } Abbreviation abbreviation = new Abbreviation(fullName, abbrName); this.abbreviations.add(abbreviation); } } public List<Abbreviation> getAbbreviations() { return new LinkedList<>(abbreviations); } }