com.reandroid.json.JSONItem Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of ARSCLib Show documentation
Show all versions of ARSCLib Show documentation
Android binary resources read/write library
/*
* Copyright (C) 2022 github.com/REAndroid
*
* 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 com.reandroid.json;
import java.io.*;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.nio.charset.StandardCharsets;
import java.util.Collection;
import java.util.Map;
import java.util.regex.Pattern;
public abstract class JSONItem {
public abstract Writer write(Writer writer, int indentFactor, int indent) throws JSONException;
public void write(File file) throws IOException{
write(file, INDENT_FACTOR);
}
public void write(File file, int indentFactor) throws IOException{
File dir=file.getParentFile();
if(dir!=null && !dir.exists()){
dir.mkdirs();
}
FileOutputStream outputStream=new FileOutputStream(file);
write(outputStream, indentFactor);
outputStream.close();
}
public void write(OutputStream outputStream) throws IOException {
write(outputStream, INDENT_FACTOR);
}
public void write(OutputStream outputStream, int indentFactor) throws IOException {
Writer writer=new OutputStreamWriter(outputStream, StandardCharsets.UTF_8);
writer= write(writer, indentFactor, 0);
writer.flush();
writer.close();
}
public Writer write(Writer writer) throws JSONException {
return this.write(writer, 0, 0);
}
@Override
public String toString() {
try {
return this.toString(0);
} catch (Exception e) {
return null;
}
}
public String toString(int indentFactor) throws JSONException {
StringWriter w = new StringWriter();
synchronized (w.getBuffer()) {
return this.write(w, indentFactor, 0).toString();
}
}
static Writer writeValue(Writer writer, Object value, int indentFactor, int indent) throws JSONException, IOException {
if (value == null || value.equals(null)) {
writer.write("null");
} else if (value instanceof JSONString) {
Object o;
try {
o = ((JSONString) value).toJSONString();
} catch (Exception e) {
throw new JSONException(e);
}
writer.write(o != null ? o.toString() : quote(value.toString()));
} else if (value instanceof Number) {
writer.write(numberToString((Number) value));
} else if (value instanceof Boolean) {
writer.write(value.toString());
} else if (value instanceof Enum) {
writer.write(quote(((Enum)value).name()));
} else if (value instanceof JSONObject) {
((JSONObject) value).write(writer, indentFactor, indent);
} else if (value instanceof JSONArray) {
((JSONArray) value).write(writer, indentFactor, indent);
} else if (value instanceof Map) {
Map map = (Map) value;
new JSONObject(map).write(writer, indentFactor, indent);
} else if (value instanceof Collection) {
Collection coll = (Collection) value;
new JSONArray(coll).write(writer, indentFactor, indent);
} else if (value.getClass().isArray()) {
new JSONArray(value).write(writer, indentFactor, indent);
} else {
quote(value.toString(), writer);
}
return writer;
}
static final void indent(Writer writer, int indent) throws IOException {
for (int i = 0; i < indent; i += 1) {
writer.write(' ');
}
}
public static String quote(String string) {
StringWriter sw = new StringWriter();
synchronized (sw.getBuffer()) {
try {
return quote(string, sw).toString();
} catch (IOException ignored) {
// will never happen - we are writing to a string writer
return "";
}
}
}
public static Writer quote(String string, Writer w) throws IOException {
if (string == null || string.isEmpty()) {
w.write("\"\"");
return w;
}
char b;
char c = 0;
String hhhh;
int i;
int len = string.length();
w.write('"');
for (i = 0; i < len; i += 1) {
b = c;
c = string.charAt(i);
switch (c) {
case '\\':
case '"':
w.write('\\');
w.write(c);
break;
case '/':
if (b == '<') {
w.write('\\');
}
w.write(c);
break;
case '\b':
w.write("\\b");
break;
case '\t':
w.write("\\t");
break;
case '\n':
w.write("\\n");
break;
case '\f':
w.write("\\f");
break;
case '\r':
w.write("\\r");
break;
default:
if (c < ' ' || (c >= '\u0080' && c < '\u00a0')
|| (c >= '\u2000' && c < '\u2100')) {
w.write("\\u");
hhhh = Integer.toHexString(c);
w.write("0000", 0, 4 - hhhh.length());
w.write(hhhh);
} else {
w.write(c);
}
}
}
w.write('"');
return w;
}
public static String numberToString(Number number) throws JSONException {
return number.toString();
}
public static void testValidity(Object o) throws JSONException {
if (o != null) {
if (o instanceof Double) {
if (((Double) o).isInfinite() || ((Double) o).isNaN()) {
throw new JSONException(
"JSON does not allow non-finite numbers.");
}
} else if (o instanceof Float) {
if (((Float) o).isInfinite() || ((Float) o).isNaN()) {
throw new JSONException(
"JSON does not allow non-finite numbers.");
}
}
}
}
public static String valueToString(Object value) throws JSONException {
// moves the implementation to JSONWriter as:
// 1. It makes more sense to be part of the writer class
// 2. For Android support this method is not available. By implementing it in the Writer
// Android users can use the writer with the built in Android JSONObject implementation.
return JSONWriter.valueToString(value);
}
public static Object wrap(Object object) {
try {
if (object == null) {
return NULL;
}
if (object instanceof JSONObject || object instanceof JSONArray
|| NULL.equals(object) || object instanceof JSONString
|| object instanceof Byte || object instanceof Character
|| object instanceof Short || object instanceof Integer
|| object instanceof Long || object instanceof Boolean
|| object instanceof Float || object instanceof Double
|| object instanceof String || object instanceof BigInteger
|| object instanceof BigDecimal || object instanceof Enum) {
return object;
}
if (object instanceof Collection) {
Collection coll = (Collection) object;
return new JSONArray(coll);
}
if (object.getClass().isArray()) {
return new JSONArray(object);
}
if (object instanceof Map) {
Map map = (Map) object;
return new JSONObject(map);
}
Package objectPackage = object.getClass().getPackage();
String objectPackageName = objectPackage != null ? objectPackage
.getName() : "";
if (objectPackageName.startsWith("java.")
|| objectPackageName.startsWith("javax.")
|| object.getClass().getClassLoader() == null) {
return object.toString();
}
return new JSONObject(object);
} catch (Exception exception) {
return null;
}
}
private static final class Null {
@Override
protected final Object clone() {
return this;
}
@Override
public boolean equals(Object object) {
return object == null || object == this;
}
@Override
public int hashCode() {
return 0;
}
@Override
public String toString() {
return "null";
}
}
public static final Object NULL = new Null();
private static final int INDENT_FACTOR = 1;
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy