Subversion Repositories SmartDukaan

/**

 * Copyright 2010-present Facebook.

 *

 * 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.facebook.model;

import android.annotation.SuppressLint;

import org.json.JSONException;

import org.json.JSONObject;

import java.util.*;

class JsonUtil {

    static void jsonObjectClear(JSONObject jsonObject) {

        @SuppressWarnings("unchecked")

        Iterator<String> keys = (Iterator<String>) jsonObject.keys();

        while (keys.hasNext()) {

            keys.next();

            keys.remove();

        }

    }

    static boolean jsonObjectContainsValue(JSONObject jsonObject, Object value) {

        @SuppressWarnings("unchecked")

        Iterator<String> keys = (Iterator<String>) jsonObject.keys();

        while (keys.hasNext()) {

            Object thisValue = jsonObject.opt(keys.next());

            if (thisValue != null && thisValue.equals(value)) {

                return true;

            }

        }

        return false;

    }

    private final static class JSONObjectEntry implements Map.Entry<String, Object> {

        private final String key;

        private final Object value;

        JSONObjectEntry(String key, Object value) {

            this.key = key;

            this.value = value;

        }

        @SuppressLint("FieldGetter")

        @Override

        public String getKey() {

            return this.key;

        }

        @Override

        public Object getValue() {

            return this.value;

        }

        @Override

        public Object setValue(Object object) {

            throw new UnsupportedOperationException("JSONObjectEntry is immutable");

        }

    }

    static Set<Map.Entry<String, Object>> jsonObjectEntrySet(JSONObject jsonObject) {

        HashSet<Map.Entry<String, Object>> result = new HashSet<Map.Entry<String, Object>>();

        @SuppressWarnings("unchecked")

        Iterator<String> keys = (Iterator<String>) jsonObject.keys();

        while (keys.hasNext()) {

            String key = keys.next();

            Object value = jsonObject.opt(key);

            result.add(new JSONObjectEntry(key, value));

        }

        return result;

    }

    static Set<String> jsonObjectKeySet(JSONObject jsonObject) {

        HashSet<String> result = new HashSet<String>();

        @SuppressWarnings("unchecked")

        Iterator<String> keys = (Iterator<String>) jsonObject.keys();

        while (keys.hasNext()) {

            result.add(keys.next());

        }

        return result;

    }

    static void jsonObjectPutAll(JSONObject jsonObject, Map<String, Object> map) {

        Set<Map.Entry<String, Object>> entrySet = map.entrySet();

        for (Map.Entry<String, Object> entry : entrySet) {

            try {

                jsonObject.putOpt(entry.getKey(), entry.getValue());

            } catch (JSONException e) {

                throw new IllegalArgumentException(e);

            }

        }

    }

    static Collection<Object> jsonObjectValues(JSONObject jsonObject) {

        ArrayList<Object> result = new ArrayList<Object>();

        @SuppressWarnings("unchecked")

        Iterator<String> keys = (Iterator<String>) jsonObject.keys();

        while (keys.hasNext()) {

            result.add(jsonObject.opt(keys.next()));

        }

        return result;

    }

}