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/*
* Copyright (c) 2018 (https://github.com/hiwepy).
*
* 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 org.springframework.biz.io;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.net.URL;
import java.util.Properties;
import org.springframework.biz.utils.StringUtils;
import org.springframework.core.io.AbstractResource;
import org.springframework.core.io.Resource;
import org.springframework.core.io.WritableResource;
import org.springframework.core.io.support.EncodedResource;
import org.springframework.core.io.support.PropertiesLoaderUtils;
import org.springframework.util.Assert;
public class PropertiesResource extends AbstractResource implements WritableResource {
public static final PropertiesResource EMPTY_RESOURCE = new PropertiesResource();
private static final String PROPERTIES_SUFFIX = ".properties";
private static final String XML_SUFFIX = ".xml";
private Properties properties;
private String path;
private File file;
private ClassLoader classLoader;
private String encoding;
public PropertiesResource() {
this.properties = new Properties();
}
public PropertiesResource(Properties properties) {
Assert.notNull(properties, "Properties must not be null");
this.properties = properties;
}
public PropertiesResource(File file) {
Assert.notNull(file, "File must not be null");
this.file = file;
this.path = StringUtils.cleanPath(file.getPath());
}
public PropertiesResource(File file,String encoding) {
Assert.notNull(file, "File must not be null");
this.file = file;
this.path = StringUtils.cleanPath(file.getPath());
this.encoding = encoding;
}
public PropertiesResource(String path) {
Assert.notNull(path, "Path must not be null");
this.file = new File(path);
this.path = StringUtils.cleanPath(path);
}
public PropertiesResource(String path,String encoding) {
Assert.notNull(path, "Path must not be null");
this.file = new File(path);
this.path = StringUtils.cleanPath(path);
this.encoding = encoding;
}
public PropertiesResource(String path,ClassLoader bundleClassLoader) {
Assert.notNull(path, "ResourceName must not be null");
this.path = path;
this.classLoader = bundleClassLoader;
}
public PropertiesResource(String path, String defaultEncoding,ClassLoader bundleClassLoader) {
Assert.notNull(path, "location must not be null");
this.path = path;
this.encoding = defaultEncoding;
this.classLoader = bundleClassLoader;
}
/*
* Return the file location for this resource.
*/
public final String getPath() {
return this.path;
}
/*
* This implementation returns whether the underlying file exists.
* @see java.io.File#exists()
*/
@Override
public boolean exists() {
return this.file.exists();
}
/*
* This implementation checks whether the underlying file is marked as readable
* (and corresponds to an actual file with content, not to a directory).
* @see java.io.File#canRead()
* @see java.io.File#isDirectory()
*/
@Override
public boolean isReadable() {
return (this.file.canRead() && !this.file.isDirectory());
}
/*
* This implementation opens a FileInputStream for the underlying file.
* @see java.io.FileInputStream
*/
@Override
public InputStream getInputStream() throws IOException {
return new FileInputStream(this.file);
}
/*
* This implementation returns a URL for the underlying file.
* @see java.io.File#toURI()
*/
@Override
public URL getURL() throws IOException {
return this.file.toURI().toURL();
}
/*
* This implementation returns a URI for the underlying file.
* @see java.io.File#toURI()
*/
@Override
public URI getURI() throws IOException {
return this.file.toURI();
}
/*
* This implementation returns the underlying File reference.
*/
@Override
public File getFile() {
return this.file;
}
/*
* This implementation returns the underlying File's length.
*/
@Override
public long contentLength() throws IOException {
return this.file.length();
}
/*
* This implementation creates a FileSystemResource, applying the given location
* relative to the location of the underlying file of this resource descriptor.
* @see org.springframework.biz.util.StringUtils#applyRelativePath(String, String)
*/
@Override
public Resource createRelative(String relativePath) {
String locationToUse = StringUtils.applyRelativePath(this.path, relativePath);
return new PropertiesResource(locationToUse);
}
/*
* This implementation returns the name of the file.
* @see java.io.File#getName()
*/
@Override
public String getFilename() {
return this.file.getName();
}
/*
* This implementation returns a description that includes the absolute
* location of the file.
* @see java.io.File#getAbsolutePath()
*/
@Override
public String getDescription() {
return "file [" + this.file.getAbsolutePath() + "]";
}
// implementation of WritableResource
/*
* This implementation checks whether the underlying file is marked as writable
* (and corresponds to an actual file with content, not to a directory).
* @see java.io.File#canWrite()
* @see java.io.File#isDirectory()
*/
@Override
public boolean isWritable() {
return (this.file.canWrite() && !this.file.isDirectory());
}
/*
* This implementation opens a FileOutputStream for the underlying file.
* @see java.io.FileOutputStream
*/
@Override
public OutputStream getOutputStream() throws IOException {
return new FileOutputStream(this.file);
}
/*
* This implementation compares the underlying File references.
*/
@Override
public boolean equals(Object obj) {
return (obj == this ||
(obj instanceof PropertiesResource && this.path.equals(((PropertiesResource) obj).path)));
}
/*
* This implementation returns the hash code of the underlying File reference.
*/
@Override
public int hashCode() {
return this.path.hashCode();
}
public Properties getProperties() {
if(properties == null){
try {
if(path != null && encoding == null){
if(classLoader == null){
properties = PropertiesLoaderUtils.loadAllProperties(path, classLoader);
}else{
properties = PropertiesLoaderUtils.loadAllProperties(path);
}
}else if(path != null && encoding != null){
properties = PropertiesLoaderUtils.loadProperties(new EncodedResource(this,this.encoding));
}else{
properties = PropertiesLoaderUtils.loadProperties(this);
}
} catch (IOException e) {
e.printStackTrace();
properties = new Properties();
}
}
return properties;
}
public String getString(String key) {
return properties.getProperty(key);
}
public String getString(String key,String defaultValue) {
return properties.getProperty(key, defaultValue);
}
public static PropertiesResource getBundle(String basename,String defaultEncoding, ClassLoader bundleClassLoader) {
PropertiesResource resource = new PropertiesResource(basename + PROPERTIES_SUFFIX,defaultEncoding,bundleClassLoader);
if(!resource.exists()){
resource = new PropertiesResource(basename + XML_SUFFIX, defaultEncoding,bundleClassLoader);
}
return resource;
}
public static PropertiesResource getBundle(String location,ClassLoader bundleClassLoader) {
return new PropertiesResource(location,bundleClassLoader);
}
}
