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LanguageTool is an Open Source proofreading software for English, French, German, Polish, Romanian, and more than 20 other languages. It finds many errors that a simple spell checker cannot detect like mixing up there/their and it detects some grammar problems.
/* LanguageTool, a natural language style checker
* Copyright (C) 2006 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.databroker;
import java.io.InputStream;
import java.net.URL;
import org.languagetool.JLanguageTool;
/**
* Responsible for getting any items from the grammar checker's resource
* directories. This default data broker assumes that they are accessible
* directly via class-path and the directory names are like specified in:
*
*
* - {@link ResourceDataBroker#RESOURCE_DIR}
* - {@link ResourceDataBroker#RULES_DIR}
*
*
*
* If you'd like to determine another resource directory location this default
* data broker provides proper methods.
* Assuming your {@code /rules} and {@code /resource} directories are accessible
* via class-path with following path information:
*
*
* - {@code /res/grammarchecker/rulesdirname}
* - {@code /res/grammarchecker/resourcedirname}
*
*
* In this case you have to use the constructor with the following arguments:
*
*
* - {@code /res/grammarchecker/rulesdirname}
* - {@code /res/grammarchecker/resourcedirname}
*
*
*
* Make sure that you never obtain any grammar checker resources by calling
* {@code Object.class.getResource(String)} or {@code
* Object.class.getResourceAsStream(String)} directly. If you would like to
* obtain something from these directories do always use
* {@link JLanguageTool#getDataBroker()} which provides proper methods for
* reading the directories above.
*
*
* For example, if you want to get the {@link URL} of {@code
* /rules/de/grammar.xml} just invoke
* {@link ResourceDataBroker#getFromRulesDirAsUrl(String)} and pass {@code
* /de/grammar.xml} as a string. Note: The {@code /rules} directory's name isn't
* passed because its name might have changed. The same usage does apply for the
* {@code /resource} directory.
*
* @see ResourceDataBroker
* @author PAX
* @since 1.0.1
*/
public class DefaultResourceDataBroker implements ResourceDataBroker {
/**
* The directory's name of the grammar checker's resource directory. The
* default value equals {@link ResourceDataBroker#RESOURCE_DIR}.
*/
private final String resourceDir;
/**
* The directory's name of the grammar checker's rules directory. The
* default value equals {@link ResourceDataBroker#RULES_DIR}.
*/
private final String rulesDir;
/**
* Instantiates this data broker with the default resource directory names
* as specified in:
*
*
* - {@link ResourceDataBroker#RESOURCE_DIR}
* - {@link ResourceDataBroker#RULES_DIR}
*
*/
public DefaultResourceDataBroker() {
this(ResourceDataBroker.RESOURCE_DIR, ResourceDataBroker.RULES_DIR);
}
/**
* Instantiates this data broker with the passed resource directory names.
*
* @param resourceDir The directory's name of the grammar checker's resource
* directory. The default value equals {@link ResourceDataBroker#RESOURCE_DIR}.
* @param rulesDir The directory's name of the grammar checker's rules directory.
* The default value equals {@link ResourceDataBroker#RULES_DIR}.
*/
public DefaultResourceDataBroker(String resourceDir, String rulesDir) {
this.resourceDir = (resourceDir == null) ? "" : resourceDir;
this.rulesDir = (rulesDir == null) ? "" : rulesDir;
}
/**
* See:
* {@link ResourceDataBroker#getFromResourceDirAsStream(String)}
*
* @param path
* The relative path to the item inside of the {@code /resource}
* directory. Please start your path information with {@code /}
* because it will be concatenated with the directory's name:
* /resource/yourpath.
* @return An {@link InputStream} object to the requested item
* @throws RuntimeException if path cannot be found
*/
@Override
public InputStream getFromResourceDirAsStream(String path) {
String completePath = getCompleteResourceUrl(path);
InputStream resourceAsStream = ResourceDataBroker.class.getResourceAsStream(completePath);
assertNotNull(resourceAsStream, path, completePath);
return resourceAsStream;
}
/**
* See:
* {@link ResourceDataBroker#getFromResourceDirAsUrl(String)}
*
* @param path
* The relative path to the item inside of the {@code /resource}
* directory. Please start your path information with {@code /}
* because it will be concatenated with the directory's name:
* /resource/yourpath.
* @return An {@link URL} object to the requested item
* @throws RuntimeException if path cannot be found
*/
@Override
public URL getFromResourceDirAsUrl(String path) {
String completePath = getCompleteResourceUrl(path);
URL resource = ResourceDataBroker.class.getResource(completePath);
assertNotNull(resource, path, completePath);
return resource;
}
/**
* Concatenates the passed resource path with the currently set {@code
* resource} directory path.
*
* @param path The relative path to a resource item inside of the {@code resource} directory.
* @return The full relative path to the resource including the path to the
* {@code resource} directory.
*/
private String getCompleteResourceUrl(String path) {
return appendPath(resourceDir, path);
}
/**
* See:
* {@link ResourceDataBroker#getFromRulesDirAsStream(String)}
*
* @param path The relative path to the item inside of the {@code /rules}
* directory. Please start your path information with {@code /} because it
* will be concatenated with the directory's name: /rules/yourpath.
* @return An {@link InputStream} object to the requested item
* @throws RuntimeException if path cannot be found
*/
@Override
public InputStream getFromRulesDirAsStream(String path) {
String completePath = getCompleteRulesUrl(path);
InputStream resourceAsStream = ResourceDataBroker.class.getResourceAsStream(completePath);
assertNotNull(resourceAsStream, path, completePath);
return resourceAsStream;
}
/**
* See: {@link ResourceDataBroker#getFromRulesDirAsUrl(String)}
*
* @param path The relative path to the item inside of the {@code /rules}
* directory. Please start your path information with {@code /} because it
* will be concatenated with the directory's name: /rules/yourpath.
* @return An {@link URL} object to the requested item
* @throws RuntimeException if path cannot be found
*/
@Override
public URL getFromRulesDirAsUrl(String path) {
String completePath = getCompleteRulesUrl(path);
URL resource = ResourceDataBroker.class.getResource(completePath);
assertNotNull(resource, path, completePath);
return resource;
}
private void assertNotNull(Object object, String path, String completePath) {
if (object == null) {
throw new RuntimeException("Path " + path + " not found in class path at " + completePath);
}
}
/**
* Concatenates the passed resource path with the currently set {@code
* rules} directory path.
*
* @param path The relative path to a resource item inside of the {@code rules} directory.
* @return The full relative path to the resource including the path to the {@code rules} directory.
*/
private String getCompleteRulesUrl(String path) {
return appendPath(rulesDir, path);
}
private String appendPath(String baseDir, String path) {
StringBuilder completePath = new StringBuilder(baseDir);
if (!this.rulesDir.endsWith("/") && !path.startsWith("/")) {
completePath.append('/');
}
if (this.rulesDir.endsWith("/") && path.startsWith("/") && path.length() > 1) {
completePath.append(path.substring(1));
} else {
completePath.append(path);
}
return completePath.toString();
}
/**
* See: {@link ResourceDataBroker#resourceExists(String)}
*
* Checks if a resource in the grammar checker's {@code /resource} exists.
* @param path Path to an item from the {@code /resource} directory.
* @return {@code true} if the resource file exists.
*/
@Override
public boolean resourceExists(String path) {
String completePath = getCompleteResourceUrl(path);
return ResourceDataBroker.class.getResource(completePath) != null;
}
/**
* See: {@link ResourceDataBroker#ruleFileExists(String)}
*
* Checks if a resource in the grammar checker's {@code /rules} exists.
* @param path Path to an item from the {@code /rules} directory.
* @return {@code true} if the resource file exists.
*/
@Override
public boolean ruleFileExists(String path) {
String completePath = getCompleteRulesUrl(path);
return ResourceDataBroker.class.getResource(completePath) != null;
}
/**
* @return The directory's name of the grammar checker's resource directory.
* The default value equals {@link ResourceDataBroker#RESOURCE_DIR}.
*/
@Override
public String getResourceDir() {
return resourceDir;
}
/**
* @return The directory's name of the grammar checker's rules directory.
* The default value equals {@link ResourceDataBroker#RULES_DIR}.
*/
@Override
public String getRulesDir() {
return rulesDir;
}
}