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JVM Asset Pipeline library for serving static web assets, bundling, minifying, and extensibility for transpiling.
/*
* Copyright 2014 the original author or authors.
*
* Licensed 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 asset.pipeline
import groovy.transform.CompileStatic
import java.security.MessageDigest
import java.security.DigestInputStream
/**
* Generic implementation of the {@link AssetFile} interface
* This is used to reference objects that do not get otherwise processed. It could be an image,
* or even a generic file not interpreted by the asset-pipeline system.
*
* @author David Estes
*/
@CompileStatic
class GenericAssetFile extends AbstractAssetFile {
String path
Closure inputStreamSource = {} //Implemented by AssetResolver
/**
* Returns an inputStream reference to the file. Since it is not a processed file this content is not saved in
* memory. This allows for digesting and inclusion of large unprocessed files without causing memory overhead.
* @return inputStream of file being read
*/
InputStream getInputStream() {
this.digest = MessageDigest.getInstance("MD5")
this.digestStream = new DigestInputStream((InputStream)inputStreamSource(),digest)
return digestStream
}
/**
* Returns the parent path or directory with which this file belongs
* @return the parent path of the file being read (paths without name)
*/
public String getParentPath() {
List pathArgs = path.tokenize("/")
if(pathArgs.size() == 1) {
return null
}
return (pathArgs[0..(pathArgs.size()-2)]).join("/")
}
/**
* Returns a byte array of the inputStream contents
* NOTE: For large files this could result in large memory issues. Not recommended to use anymore.
* @return
*/
public Byte[] getBytes() {
return inputStream.bytes
}
/**
* The name of the file without all path elements
* @return
*/
public String getName() {
path.split("/")[-1]
}
}