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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.eclipse.aether.util;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.eclipse.aether.RepositorySystemSession;
import static java.util.stream.Collectors.toList;
/**
* A utility class to read configuration properties from a repository system session.
*
* @see RepositorySystemSession#getConfigProperties()
*/
public final class ConfigUtils {
private ConfigUtils() {
// hide constructor
}
/**
* Gets the specified configuration property.
*
* @param properties The configuration properties to read, must not be {@code null}.
* @param defaultValue The default value to return in case none of the property keys are set, may be {@code null}.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a valid value is found.
* @return The property value or {@code null} if none.
*/
public static Object getObject(Map properties, Object defaultValue, String... keys) {
for (String key : keys) {
Object value = properties.get(key);
if (value != null) {
return value;
}
}
return defaultValue;
}
/**
* Gets the specified configuration property.
*
* @param session The repository system session from which to read the configuration property, must not be
* {@code null}.
* @param defaultValue The default value to return in case none of the property keys are set, may be {@code null}.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a valid value is found.
* @return The property value or {@code null} if none.
*/
public static Object getObject(RepositorySystemSession session, Object defaultValue, String... keys) {
return getObject(session.getConfigProperties(), defaultValue, keys);
}
/**
* Gets the specified configuration property.
*
* @param properties The configuration properties to read, must not be {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a string, may be
* {@code null}.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a string value is found.
* @return The property value or {@code null} if none.
*/
public static String getString(Map properties, String defaultValue, String... keys) {
for (String key : keys) {
Object value = properties.get(key);
if (value instanceof String) {
return (String) value;
}
}
return defaultValue;
}
/**
* Gets the specified configuration property.
*
* @param session The repository system session from which to read the configuration property, must not be
* {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a string, may be
* {@code null}.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a string value is found.
* @return The property value or {@code null} if none.
*/
public static String getString(RepositorySystemSession session, String defaultValue, String... keys) {
return getString(session.getConfigProperties(), defaultValue, keys);
}
/**
* Gets the specified configuration property.
*
* @param properties The configuration properties to read, must not be {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a number.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a {@link Number} or a string representation of an {@link Integer} is found.
* @return The property value.
*/
public static int getInteger(Map properties, int defaultValue, String... keys) {
for (String key : keys) {
Object value = properties.get(key);
if (value instanceof Number) {
return ((Number) value).intValue();
} else if (value instanceof String) {
try {
return Integer.parseInt((String) value);
} catch (NumberFormatException e) {
// try next key
}
}
}
return defaultValue;
}
/**
* Gets the specified configuration property.
*
* @param session The repository system session from which to read the configuration property, must not be
* {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a number.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a {@link Number} or a string representation of an {@link Integer} is found.
* @return The property value.
*/
public static int getInteger(RepositorySystemSession session, int defaultValue, String... keys) {
return getInteger(session.getConfigProperties(), defaultValue, keys);
}
/**
* Gets the specified configuration property.
*
* @param properties The configuration properties to read, must not be {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a number.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a {@link Number} or a string representation of a {@link Long} is found.
* @return The property value.
*/
public static long getLong(Map properties, long defaultValue, String... keys) {
for (String key : keys) {
Object value = properties.get(key);
if (value instanceof Number) {
return ((Number) value).longValue();
} else if (value instanceof String) {
try {
return Long.parseLong((String) value);
} catch (NumberFormatException e) {
// try next key
}
}
}
return defaultValue;
}
/**
* Gets the specified configuration property.
*
* @param session The repository system session from which to read the configuration property, must not be
* {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a number.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a {@link Number} or a string representation of a {@link Long} is found.
* @return The property value.
*/
public static long getLong(RepositorySystemSession session, long defaultValue, String... keys) {
return getLong(session.getConfigProperties(), defaultValue, keys);
}
/**
* Gets the specified configuration property.
*
* @param properties The configuration properties to read, must not be {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a number.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a {@link Number} or a string representation of a {@link Float} is found.
* @return The property value.
*/
public static float getFloat(Map properties, float defaultValue, String... keys) {
for (String key : keys) {
Object value = properties.get(key);
if (value instanceof Number) {
return ((Number) value).floatValue();
} else if (value instanceof String) {
try {
return Float.parseFloat((String) value);
} catch (NumberFormatException e) {
// try next key
}
}
}
return defaultValue;
}
/**
* Gets the specified configuration property.
*
* @param session The repository system session from which to read the configuration property, must not be
* {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a number.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a {@link Number} or a string representation of a {@link Float} is found.
* @return The property value.
*/
public static float getFloat(RepositorySystemSession session, float defaultValue, String... keys) {
return getFloat(session.getConfigProperties(), defaultValue, keys);
}
/**
* Gets the specified configuration property.
*
* @param properties The configuration properties to read, must not be {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a boolean.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a {@link Boolean} or a string (to be {@link Boolean#parseBoolean(String) parsed as boolean}) is found.
* @return The property value.
*/
public static boolean getBoolean(Map properties, boolean defaultValue, String... keys) {
for (String key : keys) {
Object value = properties.get(key);
if (value instanceof Boolean) {
return (Boolean) value;
} else if (value instanceof String) {
return Boolean.parseBoolean((String) value);
}
}
return defaultValue;
}
/**
* Gets the specified configuration property.
*
* @param session The repository system session from which to read the configuration property, must not be
* {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a boolean.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a {@link Boolean} or a string (to be {@link Boolean#parseBoolean(String) parsed as boolean}) is found.
* @return The property value.
*/
public static boolean getBoolean(RepositorySystemSession session, boolean defaultValue, String... keys) {
return getBoolean(session.getConfigProperties(), defaultValue, keys);
}
/**
* Gets the specified configuration property.
*
* @param properties The configuration properties to read, must not be {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a collection.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a collection is found.
* @return The property value or {@code null} if none.
*/
public static List getList(Map properties, List defaultValue, String... keys) {
for (String key : keys) {
Object value = properties.get(key);
if (value instanceof List) {
return (List) value;
} else if (value instanceof Collection) {
return Collections.unmodifiableList(new ArrayList<>((Collection) value));
}
}
return defaultValue;
}
/**
* Gets the specified configuration property.
*
* @param session The repository system session from which to read the configuration property, must not be
* {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a collection.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a collection is found.
* @return The property value or {@code null} if none.
*/
public static List getList(RepositorySystemSession session, List defaultValue, String... keys) {
return getList(session.getConfigProperties(), defaultValue, keys);
}
/**
* Gets the specified configuration property.
*
* @param properties The configuration properties to read, must not be {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a map.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a map is found.
* @return The property value or {@code null} if none.
*/
public static Map getMap(Map properties, Map defaultValue, String... keys) {
for (String key : keys) {
Object value = properties.get(key);
if (value instanceof Map) {
return (Map) value;
}
}
return defaultValue;
}
/**
* Gets the specified configuration property.
*
* @param session The repository system session from which to read the configuration property, must not be
* {@code null}.
* @param defaultValue The default value to return in case none of the property keys is set to a map.
* @param keys The property keys to read, must not be {@code null}. The specified keys are read one after one until
* a map is found.
* @return The property value or {@code null} if none.
*/
public static Map getMap(RepositorySystemSession session, Map defaultValue, String... keys) {
return getMap(session.getConfigProperties(), defaultValue, keys);
}
/**
* Utility method to parse configuration string that contains comma separated list of names into
* {@code List}, never returns {@code null}.
*
* @since 1.9.0
*/
public static List parseCommaSeparatedNames(String commaSeparatedNames) {
if (commaSeparatedNames == null || commaSeparatedNames.trim().isEmpty()) {
return Collections.emptyList();
}
return Arrays.stream(commaSeparatedNames.split(","))
.filter(s -> s != null && !s.trim().isEmpty())
.collect(toList());
}
/**
* Utility method to parse configuration string that contains comma separated list of names into
* {@code List} with unique elements (duplicates, if any, are discarded), never returns {@code null}.
*
* @since 1.9.0
*/
public static List parseCommaSeparatedUniqueNames(String commaSeparatedNames) {
return parseCommaSeparatedNames(commaSeparatedNames).stream().distinct().collect(toList());
}
}