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/*
* Copyright (C) 2012.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 or
* version 2 as published by the Free Software Foundation.
*
* 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.
*/
package func.lib;
import java.io.FileNotFoundException;
import java.io.Reader;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import uk.me.parabola.mkgmap.osmstyle.StyleFileLoader;
/**
* A style file loader where all the files are held as strings within the loader itself.
*
* A file name and contents can be added with the {@link #addfile(String, String)} method, or by passing an
* array to the constructor of name,content pairs.
*
* Used for testing.
*
* @author Steve Ratcliffe
*/
public class StringStyleFileLoader extends StyleFileLoader {
private final Map<String, String> files = new HashMap<>();
/**
* Pass filename and file contents like so:
* <pre>
* new String[][] {
* {"lines", "highway=primary [0x2]"},
* {"points", "amenity=doctors [0x88]"},
* ...
* }
* </pre>
* @param files An array of filename, content pairs.
*/
public StringStyleFileLoader(String[][] files) {
for (String[] nameContents : files)
addfile(nameContents[0], nameContents[1]);
}
public void addfile(String name, String contents) {
files.put(name, contents);
}
/**
* Open a file within the style. Creates a StringReader with the contents corresponding
* to the given filename. If the filename does not exist in the files array, then a FileNotFoundException
* is thrown as it would be in a regular style.
*
* @param filename The name of the file in the style.
* @return A StringReader with the contents of the file.
* @throws FileNotFoundException If the file name is not found in the files array.
*/
public Reader open(String filename) throws FileNotFoundException {
String contents = files.get(filename);
if (contents == null)
throw new FileNotFoundException("No such file " + filename);
return new StringReader(contents);
}
public void close() {
// Nothing to do
}
/**
* List the filenames in the style.
* For completeness, we probably won't use this.
*/
public String[] list() {
Set<String> strings = files.keySet();
return strings.toArray(new String[strings.size()]);
}
}
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