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A Java library for the Facebook Graph API
/*
* Copyright 2007 Yusuke Yamamoto
*
* 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 facebook4j.internal.util;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLDecoder;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.TimeZone;
import facebook4j.FacebookException;
import facebook4j.internal.http.HTMLEntity;
import facebook4j.internal.org.json.JSONArray;
import facebook4j.internal.org.json.JSONException;
import facebook4j.internal.org.json.JSONObject;
/**
* A tiny parse utility class.
*
* @author Yusuke Yamamoto - yusuke at mac.com
* @author Ryuji Yamashita - roundrop at gmail.com
*
* - Deleted parseTrendsDate() method
* - Deleted toAccessLevel() method
* - Added getPrimitiveInt() methods
* - Added getPrimitiveLong() methods
* - Added getFlag() method
* - Added getFacebookDatetime() method
* - Added getURL() method
* - Added getStringMap() method
* - Added getBooleanMap() method
* - Added getStringList() method
* - Deleted getDate() methods
*
*/
public final class z_F4JInternalParseUtil {
private static final String ISO8601_DATE_FORMAT = "yyyy-MM-dd'T'HH:mm:ssZ";
private static final String ISO8601_DATE_FORMAT_WITHOUT_TZ = "yyyy-MM-dd'T'HH:mm:ss";
private static final String ISO8601_DATE_FORMAT_WITHOUT_TIME = "yyyy-MM-dd";
private z_F4JInternalParseUtil() {
// should never be instantiated
throw new AssertionError();
}
private static ThreadLocal> formatMap = new ThreadLocal>() {
@Override
protected Map initialValue() {
return new HashMap();
}
};
public static String getUnescapedString(String str, JSONObject json) {
return HTMLEntity.unescape(getRawString(str, json));
}
public static String getRawString(String name, JSONObject json) {
try {
if (json.isNull(name)) {
return null;
} else {
return json.getString(name);
}
} catch (JSONException jsone) {
return null;
}
}
public static String getURLDecodedString(String name, JSONObject json) {
String returnValue = getRawString(name, json);
if (returnValue != null) {
try {
returnValue = URLDecoder.decode(returnValue, "UTF-8");
} catch (UnsupportedEncodingException ignore) {
}
}
return returnValue;
}
public static int getPrimitiveInt(String name, JSONObject json) {
return getPrimitiveInt(getRawString(name, json));
}
public static int getPrimitiveInt(String str) {
if (null == str || "".equals(str) || "null".equals(str)) {
return -1;
} else {
try {
return Integer.valueOf(str);
} catch (NumberFormatException nfe) {
// workaround for the API side issue http://twitter4j.org/jira/browse/TFJ-484
return -1;
}
}
}
public static Integer getInt(String name, JSONObject json) {
return getInt(getRawString(name, json));
}
public static Integer getInt(String str) {
if (null == str || "".equals(str) || "null".equals(str)) {
return null;
} else {
try {
return Integer.valueOf(str);
} catch (NumberFormatException nfe) {
// workaround for the API side issue http://twitter4j.org/jira/browse/TFJ-484
return null;
}
}
}
public static long getPrimitiveLong(String name, JSONObject json) {
return getPrimitiveLong(getRawString(name, json));
}
public static long getPrimitiveLong(String str) {
if (null == str || "".equals(str) || "null".equals(str)) {
return -1;
} else {
return Long.valueOf(str);
}
}
public static Long getLong(String name, JSONObject json) {
return getLong(getRawString(name, json));
}
public static Long getLong(String str) {
if (null == str || "".equals(str) || "null".equals(str)) {
return null;
}
return Long.valueOf(str);
}
public static double getDouble(String name, JSONObject json) {
String str2 = getRawString(name, json);
if (null == str2 || "".equals(str2) || "null".equals(str2)) {
return -1;
} else {
return Double.valueOf(str2);
}
}
public static boolean getBoolean(String name, JSONObject json) {
String str = getRawString(name, json);
if (null == str || "null".equals(str)) {
return false;
}
return Boolean.valueOf(str);
}
public static boolean getFlag(String name, JSONObject json) {
int flag = getPrimitiveInt(name, json);
return flag == 1;
}
public static Date getISO8601Datetime(String name, JSONObject json) throws FacebookException {
String dateString = getRawString(name, json);
if (dateString == null) {
return null;
}
return parseISO8601Date(dateString);
}
private static Date parseISO8601Date(String dateString) {
try {
return new SimpleDateFormat(ISO8601_DATE_FORMAT).parse(dateString);
} catch (ParseException e1) {
try {
return new SimpleDateFormat(ISO8601_DATE_FORMAT_WITHOUT_TZ).parse(dateString);
} catch (ParseException e2) {
try {
return new SimpleDateFormat(ISO8601_DATE_FORMAT_WITHOUT_TIME).parse(dateString);
} catch (ParseException e3) {
return null;
}
}
}
}
public static URL getURL(String name, JSONObject json) {
if (json.isNull(name)) {
return null;
}
try {
return new URL(getRawString(name, json));
} catch (MalformedURLException urle) {
return null;
}
}
public static Map getStringMap(String name, JSONObject json) throws FacebookException {
if (json.isNull(name)) {
return null;
}
try {
JSONObject jsonObject = json.getJSONObject(name);
HashMap result = new HashMap();
@SuppressWarnings("unchecked")
Iterator keys = jsonObject.keys();
while (keys.hasNext()) {
String key = (String) keys.next();
result.put(key, jsonObject.getString(key));
}
return result;
} catch (JSONException jsone) {
throw new FacebookException(jsone.getMessage(), jsone);
}
}
public static Map getBooleanMap(String name, JSONObject json) throws FacebookException {
if (json.isNull(name)) {
return null;
}
try {
JSONObject jsonObject = json.getJSONObject(name);
HashMap result = new HashMap();
@SuppressWarnings("unchecked")
Iterator keys = jsonObject.keys();
while (keys.hasNext()) {
String key = (String) keys.next();
result.put(key, jsonObject.getBoolean(key));
}
return result;
} catch (JSONException jsone) {
throw new FacebookException(jsone.getMessage(), jsone);
}
}
public static List getStringList(String name, JSONObject json) throws FacebookException {
if (json.isNull(name)) {
return null;
}
try {
JSONArray jsonArray = json.getJSONArray(name);
int size = jsonArray.length();
List result = new ArrayList(size);
for (int i = 0; i < size; i++) {
result.add(jsonArray.getString(i));
}
return result;
} catch (JSONException jsone) {
throw new FacebookException(jsone.getMessage(), jsone);
}
}
}