org.languagetool.rules.en.AvsAnData Maven / Gradle / Ivy
/* LanguageTool, a natural language style checker
* Copyright (C) 2015 Daniel Naber (http://www.danielnaber.de)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
* USA
*/
package org.languagetool.rules.en;
import org.languagetool.JLanguageTool;
import java.io.InputStream;
import java.util.*;
/**
* Data for {@link AvsAnRule}.
* Loads exceptions (e.g. "hour" as in "an hour") from external files.
*
* @author Daniel Naber
* @since 3.0
*/
final class AvsAnData {
private static final Set requiresA = loadWords("/en/det_a.txt");
private static final Set requiresAn = loadWords("/en/det_an.txt");
private AvsAnData() {
}
static Set getWordsRequiringA() {
return requiresA;
}
static Set getWordsRequiringAn() {
return requiresAn;
}
/**
* Load words, normalized to lowercase unless starting with '*'.
*/
private static Set loadWords(String path) {
Set set = new HashSet<>();
InputStream stream = JLanguageTool.getDataBroker().getFromRulesDirAsStream(path);
try (Scanner scanner = new Scanner(stream, "utf-8")) {
while (scanner.hasNextLine()) {
String line = scanner.nextLine().trim();
if (line.isEmpty() || line.charAt(0) == '#') {
continue;
}
if (line.charAt(0) == '*') {
set.add(line.substring(1));
} else {
set.add(line.toLowerCase());
}
}
}
return Collections.unmodifiableSet(set);
}
}