| package com.google.polo.json; |
| |
| /* |
| Copyright (c) 2002 JSON.org |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in all |
| copies or substantial portions of the Software. |
| |
| The Software shall be used for Good, not Evil. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| SOFTWARE. |
| */ |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.lang.reflect.Array; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| /** |
| * A JSONArray is an ordered sequence of values. Its external text form is a |
| * string wrapped in square brackets with commas separating the values. The |
| * internal form is an object having <code>get</code> and <code>opt</code> |
| * methods for accessing the values by index, and <code>put</code> methods for |
| * adding or replacing values. The values can be any of these types: |
| * <code>Boolean</code>, <code>JSONArray</code>, <code>JSONObject</code>, |
| * <code>Number</code>, <code>String</code>, or the |
| * <code>JSONObject.NULL object</code>. |
| * <p> |
| * The constructor can convert a JSON text into a Java object. The |
| * <code>toString</code> method converts to JSON text. |
| * <p> |
| * A <code>get</code> method returns a value if one can be found, and throws an |
| * exception if one cannot be found. An <code>opt</code> method returns a |
| * default value instead of throwing an exception, and so is useful for |
| * obtaining optional values. |
| * <p> |
| * The generic <code>get()</code> and <code>opt()</code> methods return an |
| * object which you can cast or query for type. There are also typed |
| * <code>get</code> and <code>opt</code> methods that do type checking and type |
| * coercion for you. |
| * <p> |
| * The texts produced by the <code>toString</code> methods strictly conform to |
| * JSON syntax rules. The constructors are more forgiving in the texts they will |
| * accept: |
| * <ul> |
| * <li>An extra <code>,</code> <small>(comma)</small> may appear just |
| * before the closing bracket.</li> |
| * <li>The <code>null</code> value will be inserted when there |
| * is <code>,</code> <small>(comma)</small> elision.</li> |
| * <li>Strings may be quoted with <code>'</code> <small>(single |
| * quote)</small>.</li> |
| * <li>Strings do not need to be quoted at all if they do not begin with a quote |
| * or single quote, and if they do not contain leading or trailing spaces, |
| * and if they do not contain any of these characters: |
| * <code>{ } [ ] / \ : , = ; #</code> and if they do not look like numbers |
| * and if they are not the reserved words <code>true</code>, |
| * <code>false</code>, or <code>null</code>.</li> |
| * <li>Values can be separated by <code>;</code> <small>(semicolon)</small> as |
| * well as by <code>,</code> <small>(comma)</small>.</li> |
| * <li>Numbers may have the <code>0-</code> <small>(octal)</small> or |
| * <code>0x-</code> <small>(hex)</small> prefix.</li> |
| * </ul> |
| |
| * @author JSON.org |
| * @version 2009-04-13 |
| */ |
| public class JSONArray { |
| |
| |
| /** |
| * The arrayList where the JSONArray's properties are kept. |
| */ |
| private ArrayList myArrayList; |
| |
| |
| /** |
| * Construct an empty JSONArray. |
| */ |
| public JSONArray() { |
| this.myArrayList = new ArrayList(); |
| } |
| |
| /** |
| * Construct a JSONArray from a JSONTokener. |
| * @param x A JSONTokener |
| * @throws JSONException If there is a syntax error. |
| */ |
| public JSONArray(JSONTokener x) throws JSONException { |
| this(); |
| char c = x.nextClean(); |
| char q; |
| if (c == '[') { |
| q = ']'; |
| } else if (c == '(') { |
| q = ')'; |
| } else { |
| throw x.syntaxError("A JSONArray text must start with '['"); |
| } |
| if (x.nextClean() == ']') { |
| return; |
| } |
| x.back(); |
| for (;;) { |
| if (x.nextClean() == ',') { |
| x.back(); |
| this.myArrayList.add(null); |
| } else { |
| x.back(); |
| this.myArrayList.add(x.nextValue()); |
| } |
| c = x.nextClean(); |
| switch (c) { |
| case ';': |
| case ',': |
| if (x.nextClean() == ']') { |
| return; |
| } |
| x.back(); |
| break; |
| case ']': |
| case ')': |
| if (q != c) { |
| throw x.syntaxError("Expected a '" + new Character(q) + "'"); |
| } |
| return; |
| default: |
| throw x.syntaxError("Expected a ',' or ']'"); |
| } |
| } |
| } |
| |
| |
| /** |
| * Construct a JSONArray from a source JSON text. |
| * @param source A string that begins with |
| * <code>[</code> <small>(left bracket)</small> |
| * and ends with <code>]</code> <small>(right bracket)</small>. |
| * @throws JSONException If there is a syntax error. |
| */ |
| public JSONArray(String source) throws JSONException { |
| this(new JSONTokener(source)); |
| } |
| |
| |
| /** |
| * Construct a JSONArray from a Collection. |
| * @param collection A Collection. |
| */ |
| public JSONArray(Collection collection) { |
| this.myArrayList = (collection == null) ? |
| new ArrayList() : |
| new ArrayList(collection); |
| } |
| |
| /** |
| * Construct a JSONArray from a collection of beans. |
| * The collection should have Java Beans. |
| * |
| * @throws JSONException If not an array. |
| */ |
| |
| public JSONArray(Collection collection, boolean includeSuperClass) { |
| this.myArrayList = new ArrayList(); |
| if (collection != null) { |
| Iterator iter = collection.iterator();; |
| while (iter.hasNext()) { |
| Object o = iter.next(); |
| if (o instanceof Map) { |
| this.myArrayList.add(new JSONObject((Map)o, includeSuperClass)); |
| } else if (!JSONObject.isStandardProperty(o.getClass())) { |
| this.myArrayList.add(new JSONObject(o, includeSuperClass)); |
| } else { |
| this.myArrayList.add(o); |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Construct a JSONArray from an array |
| * @throws JSONException If not an array. |
| */ |
| public JSONArray(Object array) throws JSONException { |
| this(); |
| if (array.getClass().isArray()) { |
| int length = Array.getLength(array); |
| for (int i = 0; i < length; i += 1) { |
| this.put(Array.get(array, i)); |
| } |
| } else { |
| throw new JSONException("JSONArray initial value should be a string or collection or array."); |
| } |
| } |
| |
| /** |
| * Construct a JSONArray from an array with a bean. |
| * The array should have Java Beans. |
| * |
| * @throws JSONException If not an array. |
| */ |
| public JSONArray(Object array,boolean includeSuperClass) throws JSONException { |
| this(); |
| if (array.getClass().isArray()) { |
| int length = Array.getLength(array); |
| for (int i = 0; i < length; i += 1) { |
| Object o = Array.get(array, i); |
| if (JSONObject.isStandardProperty(o.getClass())) { |
| this.myArrayList.add(o); |
| } else { |
| this.myArrayList.add(new JSONObject(o,includeSuperClass)); |
| } |
| } |
| } else { |
| throw new JSONException("JSONArray initial value should be a string or collection or array."); |
| } |
| } |
| |
| |
| |
| /** |
| * Get the object value associated with an index. |
| * @param index |
| * The index must be between 0 and length() - 1. |
| * @return An object value. |
| * @throws JSONException If there is no value for the index. |
| */ |
| public Object get(int index) throws JSONException { |
| Object o = opt(index); |
| if (o == null) { |
| throw new JSONException("JSONArray[" + index + "] not found."); |
| } |
| return o; |
| } |
| |
| |
| /** |
| * Get the boolean value associated with an index. |
| * The string values "true" and "false" are converted to boolean. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return The truth. |
| * @throws JSONException If there is no value for the index or if the |
| * value is not convertable to boolean. |
| */ |
| public boolean getBoolean(int index) throws JSONException { |
| Object o = get(index); |
| if (o.equals(Boolean.FALSE) || |
| (o instanceof String && |
| ((String)o).equalsIgnoreCase("false"))) { |
| return false; |
| } else if (o.equals(Boolean.TRUE) || |
| (o instanceof String && |
| ((String)o).equalsIgnoreCase("true"))) { |
| return true; |
| } |
| throw new JSONException("JSONArray[" + index + "] is not a Boolean."); |
| } |
| |
| |
| /** |
| * Get the double value associated with an index. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return The value. |
| * @throws JSONException If the key is not found or if the value cannot |
| * be converted to a number. |
| */ |
| public double getDouble(int index) throws JSONException { |
| Object o = get(index); |
| try { |
| return o instanceof Number ? |
| ((Number)o).doubleValue() : |
| Double.valueOf((String)o).doubleValue(); |
| } catch (Exception e) { |
| throw new JSONException("JSONArray[" + index + |
| "] is not a number."); |
| } |
| } |
| |
| |
| /** |
| * Get the int value associated with an index. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return The value. |
| * @throws JSONException If the key is not found or if the value cannot |
| * be converted to a number. |
| * if the value cannot be converted to a number. |
| */ |
| public int getInt(int index) throws JSONException { |
| Object o = get(index); |
| return o instanceof Number ? |
| ((Number)o).intValue() : (int)getDouble(index); |
| } |
| |
| |
| /** |
| * Get the JSONArray associated with an index. |
| * @param index The index must be between 0 and length() - 1. |
| * @return A JSONArray value. |
| * @throws JSONException If there is no value for the index. or if the |
| * value is not a JSONArray |
| */ |
| public JSONArray getJSONArray(int index) throws JSONException { |
| Object o = get(index); |
| if (o instanceof JSONArray) { |
| return (JSONArray)o; |
| } |
| throw new JSONException("JSONArray[" + index + |
| "] is not a JSONArray."); |
| } |
| |
| |
| /** |
| * Get the JSONObject associated with an index. |
| * @param index subscript |
| * @return A JSONObject value. |
| * @throws JSONException If there is no value for the index or if the |
| * value is not a JSONObject |
| */ |
| public JSONObject getJSONObject(int index) throws JSONException { |
| Object o = get(index); |
| if (o instanceof JSONObject) { |
| return (JSONObject)o; |
| } |
| throw new JSONException("JSONArray[" + index + |
| "] is not a JSONObject."); |
| } |
| |
| |
| /** |
| * Get the long value associated with an index. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return The value. |
| * @throws JSONException If the key is not found or if the value cannot |
| * be converted to a number. |
| */ |
| public long getLong(int index) throws JSONException { |
| Object o = get(index); |
| return o instanceof Number ? |
| ((Number)o).longValue() : (long)getDouble(index); |
| } |
| |
| |
| /** |
| * Get the string associated with an index. |
| * @param index The index must be between 0 and length() - 1. |
| * @return A string value. |
| * @throws JSONException If there is no value for the index. |
| */ |
| public String getString(int index) throws JSONException { |
| return get(index).toString(); |
| } |
| |
| |
| /** |
| * Determine if the value is null. |
| * @param index The index must be between 0 and length() - 1. |
| * @return true if the value at the index is null, or if there is no value. |
| */ |
| public boolean isNull(int index) { |
| return JSONObject.NULL.equals(opt(index)); |
| } |
| |
| |
| /** |
| * Make a string from the contents of this JSONArray. The |
| * <code>separator</code> string is inserted between each element. |
| * Warning: This method assumes that the data structure is acyclical. |
| * @param separator A string that will be inserted between the elements. |
| * @return a string. |
| * @throws JSONException If the array contains an invalid number. |
| */ |
| public String join(String separator) throws JSONException { |
| int len = length(); |
| StringBuffer sb = new StringBuffer(); |
| |
| for (int i = 0; i < len; i += 1) { |
| if (i > 0) { |
| sb.append(separator); |
| } |
| sb.append(JSONObject.valueToString(this.myArrayList.get(i))); |
| } |
| return sb.toString(); |
| } |
| |
| |
| /** |
| * Get the number of elements in the JSONArray, included nulls. |
| * |
| * @return The length (or size). |
| */ |
| public int length() { |
| return this.myArrayList.size(); |
| } |
| |
| |
| /** |
| * Get the optional object value associated with an index. |
| * @param index The index must be between 0 and length() - 1. |
| * @return An object value, or null if there is no |
| * object at that index. |
| */ |
| public Object opt(int index) { |
| return (index < 0 || index >= length()) ? |
| null : this.myArrayList.get(index); |
| } |
| |
| |
| /** |
| * Get the optional boolean value associated with an index. |
| * It returns false if there is no value at that index, |
| * or if the value is not Boolean.TRUE or the String "true". |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return The truth. |
| */ |
| public boolean optBoolean(int index) { |
| return optBoolean(index, false); |
| } |
| |
| |
| /** |
| * Get the optional boolean value associated with an index. |
| * It returns the defaultValue if there is no value at that index or if |
| * it is not a Boolean or the String "true" or "false" (case insensitive). |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @param defaultValue A boolean default. |
| * @return The truth. |
| */ |
| public boolean optBoolean(int index, boolean defaultValue) { |
| try { |
| return getBoolean(index); |
| } catch (Exception e) { |
| return defaultValue; |
| } |
| } |
| |
| |
| /** |
| * Get the optional double value associated with an index. |
| * NaN is returned if there is no value for the index, |
| * or if the value is not a number and cannot be converted to a number. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return The value. |
| */ |
| public double optDouble(int index) { |
| return optDouble(index, Double.NaN); |
| } |
| |
| |
| /** |
| * Get the optional double value associated with an index. |
| * The defaultValue is returned if there is no value for the index, |
| * or if the value is not a number and cannot be converted to a number. |
| * |
| * @param index subscript |
| * @param defaultValue The default value. |
| * @return The value. |
| */ |
| public double optDouble(int index, double defaultValue) { |
| try { |
| return getDouble(index); |
| } catch (Exception e) { |
| return defaultValue; |
| } |
| } |
| |
| |
| /** |
| * Get the optional int value associated with an index. |
| * Zero is returned if there is no value for the index, |
| * or if the value is not a number and cannot be converted to a number. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return The value. |
| */ |
| public int optInt(int index) { |
| return optInt(index, 0); |
| } |
| |
| |
| /** |
| * Get the optional int value associated with an index. |
| * The defaultValue is returned if there is no value for the index, |
| * or if the value is not a number and cannot be converted to a number. |
| * @param index The index must be between 0 and length() - 1. |
| * @param defaultValue The default value. |
| * @return The value. |
| */ |
| public int optInt(int index, int defaultValue) { |
| try { |
| return getInt(index); |
| } catch (Exception e) { |
| return defaultValue; |
| } |
| } |
| |
| |
| /** |
| * Get the optional JSONArray associated with an index. |
| * @param index subscript |
| * @return A JSONArray value, or null if the index has no value, |
| * or if the value is not a JSONArray. |
| */ |
| public JSONArray optJSONArray(int index) { |
| Object o = opt(index); |
| return o instanceof JSONArray ? (JSONArray)o : null; |
| } |
| |
| |
| /** |
| * Get the optional JSONObject associated with an index. |
| * Null is returned if the key is not found, or null if the index has |
| * no value, or if the value is not a JSONObject. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return A JSONObject value. |
| */ |
| public JSONObject optJSONObject(int index) { |
| Object o = opt(index); |
| return o instanceof JSONObject ? (JSONObject)o : null; |
| } |
| |
| |
| /** |
| * Get the optional long value associated with an index. |
| * Zero is returned if there is no value for the index, |
| * or if the value is not a number and cannot be converted to a number. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return The value. |
| */ |
| public long optLong(int index) { |
| return optLong(index, 0); |
| } |
| |
| |
| /** |
| * Get the optional long value associated with an index. |
| * The defaultValue is returned if there is no value for the index, |
| * or if the value is not a number and cannot be converted to a number. |
| * @param index The index must be between 0 and length() - 1. |
| * @param defaultValue The default value. |
| * @return The value. |
| */ |
| public long optLong(int index, long defaultValue) { |
| try { |
| return getLong(index); |
| } catch (Exception e) { |
| return defaultValue; |
| } |
| } |
| |
| |
| /** |
| * Get the optional string value associated with an index. It returns an |
| * empty string if there is no value at that index. If the value |
| * is not a string and is not null, then it is coverted to a string. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @return A String value. |
| */ |
| public String optString(int index) { |
| return optString(index, ""); |
| } |
| |
| |
| /** |
| * Get the optional string associated with an index. |
| * The defaultValue is returned if the key is not found. |
| * |
| * @param index The index must be between 0 and length() - 1. |
| * @param defaultValue The default value. |
| * @return A String value. |
| */ |
| public String optString(int index, String defaultValue) { |
| Object o = opt(index); |
| return o != null ? o.toString() : defaultValue; |
| } |
| |
| |
| /** |
| * Append a boolean value. This increases the array's length by one. |
| * |
| * @param value A boolean value. |
| * @return this. |
| */ |
| public JSONArray put(boolean value) { |
| put(value ? Boolean.TRUE : Boolean.FALSE); |
| return this; |
| } |
| |
| |
| /** |
| * Put a value in the JSONArray, where the value will be a |
| * JSONArray which is produced from a Collection. |
| * @param value A Collection value. |
| * @return this. |
| */ |
| public JSONArray put(Collection value) { |
| put(new JSONArray(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Append a double value. This increases the array's length by one. |
| * |
| * @param value A double value. |
| * @throws JSONException if the value is not finite. |
| * @return this. |
| */ |
| public JSONArray put(double value) throws JSONException { |
| Double d = new Double(value); |
| JSONObject.testValidity(d); |
| put(d); |
| return this; |
| } |
| |
| |
| /** |
| * Append an int value. This increases the array's length by one. |
| * |
| * @param value An int value. |
| * @return this. |
| */ |
| public JSONArray put(int value) { |
| put(new Integer(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Append an long value. This increases the array's length by one. |
| * |
| * @param value A long value. |
| * @return this. |
| */ |
| public JSONArray put(long value) { |
| put(new Long(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Put a value in the JSONArray, where the value will be a |
| * JSONObject which is produced from a Map. |
| * @param value A Map value. |
| * @return this. |
| */ |
| public JSONArray put(Map value) { |
| put(new JSONObject(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Append an object value. This increases the array's length by one. |
| * @param value An object value. The value should be a |
| * Boolean, Double, Integer, JSONArray, JSONObject, Long, or String, or the |
| * JSONObject.NULL object. |
| * @return this. |
| */ |
| public JSONArray put(Object value) { |
| this.myArrayList.add(value); |
| return this; |
| } |
| |
| |
| /** |
| * Put or replace a boolean value in the JSONArray. If the index is greater |
| * than the length of the JSONArray, then null elements will be added as |
| * necessary to pad it out. |
| * @param index The subscript. |
| * @param value A boolean value. |
| * @return this. |
| * @throws JSONException If the index is negative. |
| */ |
| public JSONArray put(int index, boolean value) throws JSONException { |
| put(index, value ? Boolean.TRUE : Boolean.FALSE); |
| return this; |
| } |
| |
| |
| /** |
| * Put a value in the JSONArray, where the value will be a |
| * JSONArray which is produced from a Collection. |
| * @param index The subscript. |
| * @param value A Collection value. |
| * @return this. |
| * @throws JSONException If the index is negative or if the value is |
| * not finite. |
| */ |
| public JSONArray put(int index, Collection value) throws JSONException { |
| put(index, new JSONArray(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Put or replace a double value. If the index is greater than the length of |
| * the JSONArray, then null elements will be added as necessary to pad |
| * it out. |
| * @param index The subscript. |
| * @param value A double value. |
| * @return this. |
| * @throws JSONException If the index is negative or if the value is |
| * not finite. |
| */ |
| public JSONArray put(int index, double value) throws JSONException { |
| put(index, new Double(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Put or replace an int value. If the index is greater than the length of |
| * the JSONArray, then null elements will be added as necessary to pad |
| * it out. |
| * @param index The subscript. |
| * @param value An int value. |
| * @return this. |
| * @throws JSONException If the index is negative. |
| */ |
| public JSONArray put(int index, int value) throws JSONException { |
| put(index, new Integer(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Put or replace a long value. If the index is greater than the length of |
| * the JSONArray, then null elements will be added as necessary to pad |
| * it out. |
| * @param index The subscript. |
| * @param value A long value. |
| * @return this. |
| * @throws JSONException If the index is negative. |
| */ |
| public JSONArray put(int index, long value) throws JSONException { |
| put(index, new Long(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Put a value in the JSONArray, where the value will be a |
| * JSONObject which is produced from a Map. |
| * @param index The subscript. |
| * @param value The Map value. |
| * @return this. |
| * @throws JSONException If the index is negative or if the the value is |
| * an invalid number. |
| */ |
| public JSONArray put(int index, Map value) throws JSONException { |
| put(index, new JSONObject(value)); |
| return this; |
| } |
| |
| |
| /** |
| * Put or replace an object value in the JSONArray. If the index is greater |
| * than the length of the JSONArray, then null elements will be added as |
| * necessary to pad it out. |
| * @param index The subscript. |
| * @param value The value to put into the array. The value should be a |
| * Boolean, Double, Integer, JSONArray, JSONObject, Long, or String, or the |
| * JSONObject.NULL object. |
| * @return this. |
| * @throws JSONException If the index is negative or if the the value is |
| * an invalid number. |
| */ |
| public JSONArray put(int index, Object value) throws JSONException { |
| JSONObject.testValidity(value); |
| if (index < 0) { |
| throw new JSONException("JSONArray[" + index + "] not found."); |
| } |
| if (index < length()) { |
| this.myArrayList.set(index, value); |
| } else { |
| while (index != length()) { |
| put(JSONObject.NULL); |
| } |
| put(value); |
| } |
| return this; |
| } |
| |
| |
| /** |
| * Remove a index and close the hole. |
| * @param index The index of the element to be removed. |
| * @return The value that was associated with the index, |
| * or null if there was no value. |
| */ |
| public Object remove(int index) { |
| Object o = opt(index); |
| this.myArrayList.remove(index); |
| return o; |
| } |
| |
| |
| /** |
| * Produce a JSONObject by combining a JSONArray of names with the values |
| * of this JSONArray. |
| * @param names A JSONArray containing a list of key strings. These will be |
| * paired with the values. |
| * @return A JSONObject, or null if there are no names or if this JSONArray |
| * has no values. |
| * @throws JSONException If any of the names are null. |
| */ |
| public JSONObject toJSONObject(JSONArray names) throws JSONException { |
| if (names == null || names.length() == 0 || length() == 0) { |
| return null; |
| } |
| JSONObject jo = new JSONObject(); |
| for (int i = 0; i < names.length(); i += 1) { |
| jo.put(names.getString(i), this.opt(i)); |
| } |
| return jo; |
| } |
| |
| |
| /** |
| * Make a JSON text of this JSONArray. For compactness, no |
| * unnecessary whitespace is added. If it is not possible to produce a |
| * syntactically correct JSON text then null will be returned instead. This |
| * could occur if the array contains an invalid number. |
| * <p> |
| * Warning: This method assumes that the data structure is acyclical. |
| * |
| * @return a printable, displayable, transmittable |
| * representation of the array. |
| */ |
| public String toString() { |
| try { |
| return '[' + join(",") + ']'; |
| } catch (Exception e) { |
| return null; |
| } |
| } |
| |
| |
| /** |
| * Make a prettyprinted JSON text of this JSONArray. |
| * Warning: This method assumes that the data structure is acyclical. |
| * @param indentFactor The number of spaces to add to each level of |
| * indentation. |
| * @return a printable, displayable, transmittable |
| * representation of the object, beginning |
| * with <code>[</code> <small>(left bracket)</small> and ending |
| * with <code>]</code> <small>(right bracket)</small>. |
| * @throws JSONException |
| */ |
| public String toString(int indentFactor) throws JSONException { |
| return toString(indentFactor, 0); |
| } |
| |
| |
| /** |
| * Make a prettyprinted JSON text of this JSONArray. |
| * Warning: This method assumes that the data structure is acyclical. |
| * @param indentFactor The number of spaces to add to each level of |
| * indentation. |
| * @param indent The indention of the top level. |
| * @return a printable, displayable, transmittable |
| * representation of the array. |
| * @throws JSONException |
| */ |
| String toString(int indentFactor, int indent) throws JSONException { |
| int len = length(); |
| if (len == 0) { |
| return "[]"; |
| } |
| int i; |
| StringBuffer sb = new StringBuffer("["); |
| if (len == 1) { |
| sb.append(JSONObject.valueToString(this.myArrayList.get(0), |
| indentFactor, indent)); |
| } else { |
| int newindent = indent + indentFactor; |
| sb.append('\n'); |
| for (i = 0; i < len; i += 1) { |
| if (i > 0) { |
| sb.append(",\n"); |
| } |
| for (int j = 0; j < newindent; j += 1) { |
| sb.append(' '); |
| } |
| sb.append(JSONObject.valueToString(this.myArrayList.get(i), |
| indentFactor, newindent)); |
| } |
| sb.append('\n'); |
| for (i = 0; i < indent; i += 1) { |
| sb.append(' '); |
| } |
| } |
| sb.append(']'); |
| return sb.toString(); |
| } |
| |
| |
| /** |
| * Write the contents of the JSONArray as JSON text to a writer. |
| * For compactness, no whitespace is added. |
| * <p> |
| * Warning: This method assumes that the data structure is acyclical. |
| * |
| * @return The writer. |
| * @throws JSONException |
| */ |
| public Writer write(Writer writer) throws JSONException { |
| try { |
| boolean b = false; |
| int len = length(); |
| |
| writer.write('['); |
| |
| for (int i = 0; i < len; i += 1) { |
| if (b) { |
| writer.write(','); |
| } |
| Object v = this.myArrayList.get(i); |
| if (v instanceof JSONObject) { |
| ((JSONObject)v).write(writer); |
| } else if (v instanceof JSONArray) { |
| ((JSONArray)v).write(writer); |
| } else { |
| writer.write(JSONObject.valueToString(v)); |
| } |
| b = true; |
| } |
| writer.write(']'); |
| return writer; |
| } catch (IOException e) { |
| throw new JSONException(e); |
| } |
| } |
| } |