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/*
* =============================================================================
*
* Copyright (c) 2011-2013, The THYMELEAF team (http://www.thymeleaf.org)
*
* 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.thymeleaf.util;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
/**
*
* @author Daniel Fernández
*
* @since 1.0
*
*/
public final class JavaScriptUtils {
public static String escapeString(final String str) {
return StringUtils.escapeJavaScript(str);
}
public static String print(final Object object) {
final StringBuilder output = new StringBuilder();
print(output, object);
return output.toString();
}
public static String printString(final String str) {
final StringBuilder output = new StringBuilder();
if (str == null) {
printNull(output);
} else {
printString(output, str);
}
return output.toString();
}
public static String printNumber(final Number number) {
final StringBuilder output = new StringBuilder();
if (number == null) {
printNull(output);
} else {
printNumber(output, number);
}
return output.toString();
}
public static String printBoolean(final Boolean bool) {
final StringBuilder output = new StringBuilder();
if (bool == null) {
printNull(output);
} else {
printBoolean(output, bool);
}
return output.toString();
}
public static String printCollection(final Collection collection) {
final StringBuilder output = new StringBuilder();
if (collection == null) {
printNull(output);
} else {
printCollection(output, collection);
}
return output.toString();
}
public static String printArray(final Object array) {
final StringBuilder output = new StringBuilder();
if (array == null) {
printNull(output);
} else {
printArray(output, array);
}
return output.toString();
}
public static String printMap(final Map map) {
final StringBuilder output = new StringBuilder();
if (map == null) {
printNull(output);
} else {
printMap(output, map);
}
return output.toString();
}
public static String printObject(final Object object) {
final StringBuilder output = new StringBuilder();
if (object == null) {
printNull(output);
} else {
printObject(output, object);
}
return output.toString();
}
private static void print(final StringBuilder output, final Object object) {
if (object == null) {
printNull(output);
return;
}
if (object instanceof String) {
printString(output, (String) object);
return;
}
if (object instanceof Character) {
printString(output, object.toString());
return;
}
if (object instanceof Number) {
printNumber(output, (Number) object);
return;
}
if (object instanceof Boolean) {
printBoolean(output, (Boolean) object);
return;
}
if (object instanceof Date) {
printDate(output, (Date) object);
return;
}
if (object.getClass().isArray()) {
printArray(output, object);
return;
}
if (object instanceof Collection) {
printCollection(output, (Collection) object);
return;
}
if (object instanceof Map) {
printMap(output, (Map) object);
return;
}
if (object.getClass().isEnum()) {
printEnum(output, object);
return;
}
printObject(output, object);
}
private static void printNull(final StringBuilder output) {
output.append("null");
}
private static void printString(final StringBuilder output, final String str) {
output.append('\'');
output.append(StringUtils.escapeJavaScript(str));
output.append('\'');
}
private static void printNumber(final StringBuilder output, final Number number) {
output.append(number.toString());
}
private static void printBoolean(final StringBuilder output, final Boolean bool) {
output.append(bool.toString());
}
private static void printDate(final StringBuilder output, final Date date) {
output.append((date instanceof java.sql.Date ? new Date(date.getTime()) : date).toString());
}
private static void printArray(final StringBuilder output, final Object arrayObj) {
output.append('[');
if (arrayObj instanceof Object[]) {
final Object[] array = (Object[]) arrayObj;
boolean first = true;
for (final Object element: array) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, element);
}
} else if (arrayObj instanceof boolean[]) {
final boolean[] array = (boolean[]) arrayObj;
boolean first = true;
for (final boolean element: array) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, Boolean.valueOf(element));
}
} else if (arrayObj instanceof byte[]) {
final byte[] array = (byte[]) arrayObj;
boolean first = true;
for (final byte element: array) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, Byte.valueOf(element));
}
} else if (arrayObj instanceof short[]) {
final short[] array = (short[]) arrayObj;
boolean first = true;
for (final short element: array) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, Short.valueOf(element));
}
} else if (arrayObj instanceof int[]) {
final int[] array = (int[]) arrayObj;
boolean first = true;
for (final int element: array) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, Integer.valueOf(element));
}
} else if (arrayObj instanceof long[]) {
final long[] array = (long[]) arrayObj;
boolean first = true;
for (final long element: array) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, Long.valueOf(element));
}
} else if (arrayObj instanceof float[]) {
final float[] array = (float[]) arrayObj;
boolean first = true;
for (final float element: array) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, Float.valueOf(element));
}
} else if (arrayObj instanceof double[]) {
final double[] array = (double[]) arrayObj;
boolean first = true;
for (final double element: array) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, Double.valueOf(element));
}
} else {
throw new IllegalArgumentException("Cannot print \"" + arrayObj + "\" of class " + arrayObj.getClass().getName() + " as an array");
}
output.append(']');
}
private static void printCollection(final StringBuilder output, final Collection collection) {
output.append('[');
boolean first = true;
for (final Object element: collection) {
if (first) {
first = false;
} else {
output.append(',');
}
print(output, element);
}
output.append(']');
}
private static void printMap(final StringBuilder output, final Map map) {
output.append('{');
boolean first = true;
for (final Map.Entry entry: map.entrySet()) {
if (first) {
first = false;
} else {
output.append(',');
}
printKeyValue(output, entry.getKey(), entry.getValue());
}
output.append('}');
}
private static void printKeyValue(final StringBuilder output, final Object key, final Object value) {
print(output, key);
output.append(':');
print(output, value);
}
private static void printObject(final StringBuilder output, final Object object) {
try {
final PropertyDescriptor[] descriptors =
Introspector.getBeanInfo(object.getClass()).getPropertyDescriptors();
final Map properties = new LinkedHashMap(descriptors.length + 1, 1.0f);
for (final PropertyDescriptor descriptor : descriptors) {
final Method readMethod = descriptor.getReadMethod();
if (readMethod != null) {
final String name = descriptor.getName();
if (!"class".equals(name.toLowerCase())) {
final Object value = readMethod.invoke(object);
properties.put(name, value);
}
}
}
printMap(output, properties);
} catch (final IllegalAccessException e) {
throw new IllegalArgumentException("Could not perform introspection on object of class " + object.getClass().getName(), e);
} catch (final InvocationTargetException e) {
throw new IllegalArgumentException("Could not perform introspection on object of class " + object.getClass().getName(), e);
} catch (final IntrospectionException e) {
throw new IllegalArgumentException("Could not perform introspection on object of class " + object.getClass().getName(), e);
}
}
private static void printEnum(final StringBuilder output, final Object object) {
final Enum enumObject = (Enum) object;
final Class enumClass = object.getClass();
final Map properties = new LinkedHashMap(3, 1.0f);
properties.put("$type", enumClass.getSimpleName());
properties.put("$name", enumObject.name());
printMap(output, properties);
}
private JavaScriptUtils() {
super();
}
}