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// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// 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 HOLDER 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.
package jodd.util;
import jodd.io.IOUtil;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Map;
import java.util.Properties;
/**
* Misc java.util.Properties utils.
*/
public class PropertiesUtil {
// ---------------------------------------------------------------- to/from files
/**
* Create properties from the file.
*
* @param fileName properties file name to load
*/
public static Properties createFromFile(final String fileName) throws IOException {
return createFromFile(new File(fileName));
}
/**
* Create properties from the file.
*
* @param file properties file to load
*/
public static Properties createFromFile(final File file) throws IOException {
final Properties prop = new Properties();
loadFromFile(prop, file);
return prop;
}
/**
* Loads properties from the file. Properties are appended to the existing
* properties object.
*
* @param p properties to fill in
* @param fileName properties file name to load
*/
public static void loadFromFile(final Properties p, final String fileName) throws IOException {
loadFromFile(p, new File(fileName));
}
/**
* Loads properties from the file. Properties are appended to the existing
* properties object.
*
* @param p properties to fill in
* @param file file to read properties from
*/
public static void loadFromFile(final Properties p, final File file) throws IOException {
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
p.load(fis);
} finally {
IOUtil.close(fis);
}
}
/**
* Writes properties to a file.
*
* @param p properties to write to file
* @param fileName destination file name
*/
public static void writeToFile(final Properties p, final String fileName) throws IOException {
writeToFile(p, new File(fileName), null);
}
/**
* Writes properties to a file.
*
* @param p properties to write to file
* @param fileName destination file name
* @param header optional header
*/
public static void writeToFile(final Properties p, final String fileName, final String header) throws IOException {
writeToFile(p, new File(fileName), header);
}
/**
* Writes properties to a file.
*
* @param p properties to write to file
* @param file destination file
*/
public static void writeToFile(final Properties p, final File file) throws IOException {
writeToFile(p, file, null);
}
/**
* Writes properties to a file.
*
* @param p properties to write to file
* @param file destination file
* @param header optional header
*/
public static void writeToFile(final Properties p, final File file, final String header) throws IOException {
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
p.store(fos, header);
} finally {
IOUtil.close(fos);
}
}
// ---------------------------------------------------------------- to/from string
/**
* Creates properties from string.
*/
public static Properties createFromString(final String data) throws IOException {
final Properties p = new Properties();
loadFromString(p, data);
return p;
}
/**
* Loads properties from string.
*/
public static void loadFromString(final Properties p, final String data) throws IOException {
try (final ByteArrayInputStream is = new ByteArrayInputStream(data.getBytes(StandardCharsets.ISO_8859_1))) {
p.load(is);
}
}
// ---------------------------------------------------------------- subsets
/**
* Creates new Properties object from the original one, by copying
* those properties that have specified first part of the key name.
* Prefix may be optionally stripped during this process.
*
* @param p source properties, from which new object will be created
* @param prefix key names prefix
*
* @return subset properties
*/
public static Properties subset(final Properties p, String prefix, final boolean stripPrefix) {
if (StringUtil.isBlank(prefix)) {
return p;
}
if (!prefix.endsWith(StringPool.DOT)) {
prefix += '.';
}
final Properties result = new Properties();
final int baseLen = prefix.length();
for (final Object o : p.keySet()) {
final String key = (String) o;
if (key.startsWith(prefix)) {
result.setProperty(stripPrefix ? key.substring(baseLen) : key, p.getProperty(key));
}
}
return result;
}
// ---------------------------------------------------------------- variables
/**
* Returns String property from a map. If key is not found, or if value is not a String, returns null.
* Mimics Property.getProperty but on map.
*/
public static String getProperty(final Map map, final String key) {
return getProperty(map, key, null);
}
/**
* Returns String property from a map.
* @see #getProperty(java.util.Map, String)
*/
public static String getProperty(final Map map, final String key, final String defaultValue) {
final Object val = map.get(key);
return (val instanceof String) ? (String) val : defaultValue;
}
/**
* Resolves all variables.
*/
public static void resolveAllVariables(final Properties prop) {
for (final Object o : prop.keySet()) {
final String key = (String) o;
final String value = resolveProperty(prop, key);
prop.setProperty(key, value);
}
}
/**
* Returns property with resolved variables.
*/
public static String resolveProperty(final Map map, final String key) {
final String value = getProperty(map, key);
if (value == null) {
return null;
}
return StringTemplateParser.of(macroName -> getProperty(map, macroName)).setParseValues(true).apply(value);
}
}
