/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.fontbox.util.autodetect;
import java.io.File;
import java.util.List;
/**
* Native font finder base class. This class is based on a class provided by Apache FOP. see
* org.apache.fop.fonts.autodetect.NativeFontDirFinder
*/
public abstract class NativeFontDirFinder implements FontDirFinder
{
/**
* Generic method used by Mac and Unix font finders.
*
* @return list of natively existing font directories {@inheritDoc}
*/
@Override
public List<File> find()
{
List<File> fontDirList = new java.util.ArrayList<>();
String[] searchableDirectories = getSearchableDirectories();
if (searchableDirectories != null)
{
for (String searchableDirectorie : searchableDirectories)
{
File fontDir = new File(searchableDirectorie);
try
{
if (fontDir.exists() && fontDir.canRead())
{
fontDirList.add(fontDir);
}
}
catch (SecurityException e)
{
// should continue if this fails
}
}
}
return fontDirList;
}
/**
* Returns an array of directories to search for fonts in.
*
* @return an array of directories
*/
protected abstract String[] getSearchableDirectories();
}