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/*
* Created on Apr 15, 2008
*
* PLACE_YOUR_DISTRIBUTION_STATEMENT_RIGHT_HERE
*/
package org.eclipse.osee.framework.resource.locator.attribute;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.net.URI;
import org.eclipse.osee.framework.resource.management.IResourceLocator;
import org.eclipse.osee.framework.resource.management.IResourceLocatorProvider;
import org.eclipse.osee.framework.resource.management.ResourceLocator;
import org.eclipse.osee.framework.resource.management.exception.MalformedLocatorException;
/**
* @author Roberto E. Escobar
*/
public class AttributeLocatorProvider implements IResourceLocatorProvider {
/* (non-Javadoc)
* @see org.eclipse.osee.framework.resource.management.IResourceLocatorProvider#generateResourceLocator(java.lang.String)
*/
@Override
public IResourceLocator generateResourceLocator(String seed, String name) throws MalformedLocatorException {
URI uri = null;
try {
uri = new URI(generatePath(seed, name));
} catch (Exception ex) {
throw new MalformedLocatorException(ex);
}
return new ResourceLocator(uri);
}
/* (non-Javadoc)
* @see org.eclipse.osee.framework.resource.management.IResourceLocatorProvider#getResourceLocator(java.lang.String)
*/
@Override
public IResourceLocator getResourceLocator(String path) throws MalformedLocatorException {
URI uri = null;
if (isPathValid(path) != false) {
try {
uri = new URI(path);
} catch (Exception ex) {
throw new MalformedLocatorException(ex);
}
} else {
throw new MalformedLocatorException(String.format("Invalid path hint: [%s]", path));
}
return new ResourceLocator(uri);
}
/* (non-Javadoc)
* @see org.eclipse.osee.framework.resource.management.IResourceLocatorProvider#isValid(java.lang.String)
*/
@Override
public boolean isValid(String protocol) {
return isArgValid(protocol) != false && protocol.startsWith("attr") != false;
}
private boolean isArgValid(String value) {
return value != null && value.length() > 0;
}
private boolean isPathValid(String value) {
return isArgValid(value) && value.startsWith("attr://");
}
private String generatePath(String seed, String name) throws MalformedLocatorException {
StringBuilder builder = new StringBuilder("attr://");
if (isArgValid(seed) != false && isArgValid(name) != false) {
try {
char[] buffer = new char[3];
int cnt = -1;
Reader in = new StringReader(seed);
while ((cnt = in.read(buffer)) != -1) {
builder.append(buffer, 0, cnt);
builder.append("/");
}
} catch (IOException ex) {
throw new MalformedLocatorException(ex);
}
builder.append(name);
} else {
throw new MalformedLocatorException("Invalid arguments during locator generation.");
}
return builder.toString();
}
}
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