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URILocation.java
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126 lines (108 loc) · 3.67 KB
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/*
* #%L
* SciJava Common shared library for SciJava software.
* %%
* Copyright (C) 2009 - 2016 Board of Regents of the University of
* Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
* Institute of Molecular Cell Biology and Genetics.
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
package org.scijava.io;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URLDecoder;
import java.util.LinkedHashMap;
import java.util.Map;
import org.scijava.log.LogService;
import org.scijava.plugin.Parameter;
/**
* {@link Location} backed by a {@link URI} string.
*
* @author Curtis Rueden
*/
public class URILocation extends AbstractLocation {
@Parameter
private LogService log;
private final URI uri;
public URILocation(final URI uri) {
this.uri = uri;
}
public URILocation(final String uriPath) throws URISyntaxException {
this(new URI(uriPath));
}
// -- URILocation methods --
public Map<String, String> getQueryMap() {
return decodeQuery(getURI().getRawQuery());
}
public String getQueryValue(final String key) {
return getQueryMap().get(key);
}
// FIXME: look up whether anyone has created a mutatable URI class,
// with individual setters for the various parts. Otherwise, we'll
// have to handle it here!
// -- Location methods --
@Override
public URI getURI() {
return uri;
}
// -- Helper methods --
/**
* Decodes a query string of ampersand-separated key/value pairs. E.g.:
* {@code apples=yummy&bananas=delicious&grapefruits=scrumptious}.
*
* @param query The query string to decode.
* @return A map of the decoded key/value pairs.
*/
private Map<String, String> decodeQuery(final String query) {
final Map<String, String> map = new LinkedHashMap<>();
if (query == null) return map;
for (final String param : query.split("&")) {
final int equals = param.indexOf("=");
if (equals < 0) {
map.put(decode(param), "true");
}
else {
final String key = decode(param.substring(0, equals));
final String value = decode(param.substring(equals + 1));
map.put(key, value);
}
}
return map;
}
/**
* Decodes a single uuencoded string.
*
* @see URLDecoder
*/
private String decode(final String s) {
// http://stackoverflow.com/a/6926987
try {
return URLDecoder.decode(s.replace("+", "%2B"), "UTF-8");
}
catch (UnsupportedEncodingException exc) {
return null;
}
}
}