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Android binary resources read/write library
/*
* Copyright (c) 2002 JSON.org (now "Public Domain")
* This is NOT property of REAndroid
* This package is renamed from org.json.* to avoid class conflict when used on anroid platforms
*/
package com.reandroid.json;
import java.io.Reader;
import java.io.StringReader;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Iterator;
@SuppressWarnings("boxing")
public class XML {
/** The Character '&'. */
public static final Character AMP = '&';
/** The Character '''. */
public static final Character APOS = '\'';
/** The Character '!'. */
public static final Character BANG = '!';
/** The Character '='. */
public static final Character EQ = '=';
/** The Character {@code '>'. }*/
public static final Character GT = '>';
/** The Character '<'. */
public static final Character LT = '<';
/** The Character '?'. */
public static final Character QUEST = '?';
/** The Character '"'. */
public static final Character QUOT = '"';
/** The Character '/'. */
public static final Character SLASH = '/';
public static final String NULL_ATTR = "xsi:nil";
public static final String TYPE_ATTR = "xsi:type";
private static Iterable codePointIterator(final String string) {
return new Iterable() {
@Override
public Iterator iterator() {
return new Iterator() {
private int nextIndex = 0;
private int length = string.length();
@Override
public boolean hasNext() {
return this.nextIndex < this.length;
}
@Override
public Integer next() {
int result = string.codePointAt(this.nextIndex);
this.nextIndex += Character.charCount(result);
return result;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
};
}
public static String escape(String string) {
StringBuilder sb = new StringBuilder(string.length());
for (final int cp : codePointIterator(string)) {
switch (cp) {
case '&':
sb.append("&");
break;
case '<':
sb.append("<");
break;
case '>':
sb.append(">");
break;
case '"':
sb.append(""");
break;
case '\'':
sb.append("'");
break;
default:
if (mustEscape(cp)) {
sb.append("&#x");
sb.append(Integer.toHexString(cp));
sb.append(';');
} else {
sb.appendCodePoint(cp);
}
}
}
return sb.toString();
}
private static boolean mustEscape(int cp) {
/* Valid range from https://www.w3.org/TR/REC-xml/#charsets
*
* #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
*
* any Unicode character, excluding the surrogate blocks, FFFE, and FFFF.
*/
// isISOControl is true when (cp >= 0 && cp <= 0x1F) || (cp >= 0x7F && cp <= 0x9F)
// all ISO control characters are out of range except tabs and new lines
return (Character.isISOControl(cp)
&& cp != 0x9
&& cp != 0xA
&& cp != 0xD
) || !(
// valid the range of acceptable characters that aren't control
(cp >= 0x20 && cp <= 0xD7FF)
|| (cp >= 0xE000 && cp <= 0xFFFD)
|| (cp >= 0x10000 && cp <= 0x10FFFF)
)
;
}
public static String unescape(String string) {
StringBuilder sb = new StringBuilder(string.length());
for (int i = 0, length = string.length(); i < length; i++) {
char c = string.charAt(i);
if (c == '&') {
final int semic = string.indexOf(';', i);
if (semic > i) {
final String entity = string.substring(i + 1, semic);
sb.append(XMLTokener.unescapeEntity(entity));
// skip past the entity we just parsed.
i += entity.length() + 1;
} else {
// this shouldn't happen in most cases since the parser
// errors on unclosed entries.
sb.append(c);
}
} else {
// not part of an entity
sb.append(c);
}
}
return sb.toString();
}
public static void noSpace(String string) throws JSONException {
int i, length = string.length();
if (length == 0) {
throw new JSONException("Empty string.");
}
for (i = 0; i < length; i += 1) {
if (Character.isWhitespace(string.charAt(i))) {
throw new JSONException("'" + string
+ "' contains a space character.");
}
}
}
private static boolean parse(XMLTokener x, JSONObject context, String name, XMLParserConfiguration config)
throws JSONException {
char c;
int i;
JSONObject jsonObject = null;
String string;
String tagName;
Object token;
XMLXsiTypeConverter xmlXsiTypeConverter;
// Test for and skip past these forms:
//
//
//
//
// Report errors for these forms:
// <>
// <=
// <<
token = x.nextToken();
// ");
return false;
}
x.back();
} else if (c == '[') {
token = x.nextToken();
if ("CDATA".equals(token)) {
if (x.next() == '[') {
string = x.nextCDATA();
if (string.length() > 0) {
context.accumulate(config.getcDataTagName(), string);
}
return false;
}
}
throw x.syntaxError("Expected 'CDATA['");
}
i = 1;
do {
token = x.nextMeta();
if (token == null) {
throw x.syntaxError("Missing '>' after ' 0);
return false;
} else if (token == QUEST) {
// ");
return false;
} else if (token == SLASH) {
// Close tag
if (x.nextToken() != GT) {
throw x.syntaxError("Misshaped tag");
}
if (nilAttributeFound) {
context.accumulate(tagName, JSONObject.NULL);
} else if (jsonObject.length() > 0) {
context.accumulate(tagName, jsonObject);
} else {
context.accumulate(tagName, "");
}
return false;
} else if (token == GT) {
// Content, between <...> and
for (;;) {
token = x.nextContent();
if (token == null) {
if (tagName != null) {
throw x.syntaxError("Unclosed tag " + tagName);
}
return false;
} else if (token instanceof String) {
string = (String) token;
if (string.length() > 0) {
if(xmlXsiTypeConverter != null) {
jsonObject.accumulate(config.getcDataTagName(),
stringToValue(string, xmlXsiTypeConverter));
} else {
jsonObject.accumulate(config.getcDataTagName(),
config.isKeepStrings() ? string : stringToValue(string));
}
}
} else if (token == LT) {
// Nested element
if (parse(x, jsonObject, tagName, config)) {
if (jsonObject.length() == 0) {
context.accumulate(tagName, "");
} else if (jsonObject.length() == 1
&& jsonObject.opt(config.getcDataTagName()) != null) {
context.accumulate(tagName, jsonObject.opt(config.getcDataTagName()));
} else {
context.accumulate(tagName, jsonObject);
}
return false;
}
}
}
} else {
throw x.syntaxError("Misshaped tag");
}
}
}
}
public static Object stringToValue(String string, XMLXsiTypeConverter typeConverter) {
if(typeConverter != null) {
return typeConverter.convert(string);
}
return stringToValue(string);
}
// To maintain compatibility with the Android API, this method is a direct copy of
// the one in JSONObject. Changes made here should be reflected there.
// This method should not make calls out of the XML object.
public static Object stringToValue(String string) {
if ("".equals(string)) {
return string;
}
// check JSON key words true/false/null
if ("true".equalsIgnoreCase(string)) {
return Boolean.TRUE;
}
if ("false".equalsIgnoreCase(string)) {
return Boolean.FALSE;
}
if ("null".equalsIgnoreCase(string)) {
return JSONObject.NULL;
}
/*
* If it might be a number, try converting it. If a number cannot be
* produced, then the value will just be a string.
*/
char initial = string.charAt(0);
if ((initial >= '0' && initial <= '9') || initial == '-') {
try {
return stringToNumber(string);
} catch (Exception ignore) {
}
}
return string;
}
private static Number stringToNumber(final String val) throws NumberFormatException {
char initial = val.charAt(0);
if ((initial >= '0' && initial <= '9') || initial == '-') {
// decimal representation
if (isDecimalNotation(val)) {
// Use a BigDecimal all the time so we keep the original
// representation. BigDecimal doesn't support -0.0, ensure we
// keep that by forcing a decimal.
try {
BigDecimal bd = new BigDecimal(val);
if(initial == '-' && BigDecimal.ZERO.compareTo(bd)==0) {
return Double.valueOf(-0.0);
}
return bd;
} catch (NumberFormatException retryAsDouble) {
// this is to support "Hex Floats" like this: 0x1.0P-1074
try {
Double d = Double.valueOf(val);
if(d.isNaN() || d.isInfinite()) {
throw new NumberFormatException("val ["+val+"] is not a valid number.");
}
return d;
} catch (NumberFormatException ignore) {
throw new NumberFormatException("val ["+val+"] is not a valid number.");
}
}
}
// block items like 00 01 etc. Java number parsers treat these as Octal.
if(initial == '0' && val.length() > 1) {
char at1 = val.charAt(1);
if(at1 >= '0' && at1 <= '9') {
throw new NumberFormatException("val ["+val+"] is not a valid number.");
}
} else if (initial == '-' && val.length() > 2) {
char at1 = val.charAt(1);
char at2 = val.charAt(2);
if(at1 == '0' && at2 >= '0' && at2 <= '9') {
throw new NumberFormatException("val ["+val+"] is not a valid number.");
}
}
// integer representation.
// This will narrow any values to the smallest reasonable Object representation
// (Integer, Long, or BigInteger)
// BigInteger down conversion: We use a similar bitLenth compare as
// BigInteger#intValueExact uses. Increases GC, but objects hold
// only what they need. i.e. Less runtime overhead if the value is
// long lived.
BigInteger bi = new BigInteger(val);
if(bi.bitLength() <= 31){
return Integer.valueOf(bi.intValue());
}
if(bi.bitLength() <= 63){
return Long.valueOf(bi.longValue());
}
return bi;
}
throw new NumberFormatException("val ["+val+"] is not a valid number.");
}
private static boolean isDecimalNotation(final String val) {
return val.indexOf('.') > -1 || val.indexOf('e') > -1
|| val.indexOf('E') > -1 || "-0".equals(val);
}
public static JSONObject toJSONObject(String string) throws JSONException {
return toJSONObject(string, XMLParserConfiguration.ORIGINAL);
}
public static JSONObject toJSONObject(Reader reader) throws JSONException {
return toJSONObject(reader, XMLParserConfiguration.ORIGINAL);
}
public static JSONObject toJSONObject(Reader reader, boolean keepStrings) throws JSONException {
if(keepStrings) {
return toJSONObject(reader, XMLParserConfiguration.KEEP_STRINGS);
}
return toJSONObject(reader, XMLParserConfiguration.ORIGINAL);
}
public static JSONObject toJSONObject(Reader reader, XMLParserConfiguration config) throws JSONException {
JSONObject jo = new JSONObject();
XMLTokener x = new XMLTokener(reader);
while (x.more()) {
x.skipPast("<");
if(x.more()) {
parse(x, jo, null, config);
}
}
return jo;
}
public static JSONObject toJSONObject(String string, boolean keepStrings) throws JSONException {
return toJSONObject(new StringReader(string), keepStrings);
}
public static JSONObject toJSONObject(String string, XMLParserConfiguration config) throws JSONException {
return toJSONObject(new StringReader(string), config);
}
public static String toString(Object object) throws JSONException {
return toString(object, null, XMLParserConfiguration.ORIGINAL);
}
public static String toString(final Object object, final String tagName) {
return toString(object, tagName, XMLParserConfiguration.ORIGINAL);
}
public static String toString(final Object object, final String tagName, final XMLParserConfiguration config)
throws JSONException {
StringBuilder sb = new StringBuilder();
JSONArray ja;
JSONObject jo;
String string;
if (object instanceof JSONObject) {
// Emit
if (tagName != null) {
sb.append('<');
sb.append(tagName);
sb.append('>');
}
// Loop thru the keys.
// don't use the new entrySet accessor to maintain Android Support
jo = (JSONObject) object;
for (final String key : jo.keySet()) {
Object value = jo.opt(key);
if (value == null) {
value = "";
} else if (value.getClass().isArray()) {
value = new JSONArray(value);
}
// Emit content in body
if (key.equals(config.getcDataTagName())) {
if (value instanceof JSONArray) {
ja = (JSONArray) value;
int jaLength = ja.length();
// don't use the new iterator API to maintain support for Android
for (int i = 0; i < jaLength; i++) {
if (i > 0) {
sb.append('\n');
}
Object val = ja.opt(i);
sb.append(escape(val.toString()));
}
} else {
sb.append(escape(value.toString()));
}
// Emit an array of similar keys
} else if (value instanceof JSONArray) {
ja = (JSONArray) value;
int jaLength = ja.length();
// don't use the new iterator API to maintain support for Android
for (int i = 0; i < jaLength; i++) {
Object val = ja.opt(i);
if (val instanceof JSONArray) {
sb.append('<');
sb.append(key);
sb.append('>');
sb.append(toString(val, null, config));
sb.append("');
} else {
sb.append(toString(val, key, config));
}
}
} else if ("".equals(value)) {
sb.append('<');
sb.append(key);
sb.append("/>");
// Emit a new tag
} else {
sb.append(toString(value, key, config));
}
}
if (tagName != null) {
// Emit the close tag
sb.append("');
}
return sb.toString();
}
if (object != null && (object instanceof JSONArray || object.getClass().isArray())) {
if(object.getClass().isArray()) {
ja = new JSONArray(object);
} else {
ja = (JSONArray) object;
}
int jaLength = ja.length();
// don't use the new iterator API to maintain support for Android
for (int i = 0; i < jaLength; i++) {
Object val = ja.opt(i);
// XML does not have good support for arrays. If an array
// appears in a place where XML is lacking, synthesize an
// element.
sb.append(toString(val, tagName == null ? "array" : tagName, config));
}
return sb.toString();
}
string = (object == null) ? "null" : escape(object.toString());
return (tagName == null) ? "\"" + string + "\""
: (string.length() == 0) ? "<" + tagName + "/>" : "<" + tagName
+ ">" + string + "";
}
}
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