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z_T4JInternalParseUtil.java
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z_T4JInternalParseUtil.java
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/*
* 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 twitter4j.internal.util;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import twitter4j.TwitterException;
import twitter4j.TwitterResponse;
import twitter4j.internal.http.HTMLEntity;
import twitter4j.internal.http.HttpResponse;
import twitter4j.internal.http.HTMLEntityString;
import twitter4j.internal.org.json.JSONException;
import twitter4j.internal.org.json.JSONObject;
/**
* A tiny parse utility class.
*
* @author Yusuke Yamamoto - yusuke at mac.com
*/
public final class z_T4JInternalParseUtil {
private z_T4JInternalParseUtil() {
// should never be instantiated
throw new AssertionError();
}
private static ThreadLocal<Map<String, SimpleDateFormat>> formatMap = new ThreadLocal<Map<String, SimpleDateFormat>>() {
@Override
protected Map<String, SimpleDateFormat> initialValue() {
return new HashMap<String, SimpleDateFormat>();
}
};
public static String getUnescapedString(String str, JSONObject json) {
return HTMLEntity.unescape(getRawString(str, json));
}
public static HTMLEntityString getUnescapedEntityString(String str, JSONObject json) {
return HTMLEntityString.unescape(new StringBuilder(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 Date parseTrendsDate(String asOfStr) throws TwitterException {
Date parsed;
switch (asOfStr.length()) {
case 10:
parsed = new Date(Long.parseLong(asOfStr) * 1000);
break;
case 20:
parsed = getDate(asOfStr, "yyyy-MM-dd'T'HH:mm:ss'Z'");
break;
default:
parsed = getDate(asOfStr, "EEE, d MMM yyyy HH:mm:ss z");
}
return parsed;
}
public static Date getDate(String name, JSONObject json) throws TwitterException {
return getDate(name, json, "EEE MMM d HH:mm:ss z yyyy");
}
public static Date getDate(String name, JSONObject json, String format) throws TwitterException {
String dateStr = getUnescapedString(name, json);
if ("null".equals(dateStr) || null == dateStr) {
return null;
} else {
return getDate(dateStr, format);
}
}
public static Date getDate(String name, String format) throws TwitterException {
SimpleDateFormat sdf = formatMap.get().get(format);
if (null == sdf) {
sdf = new SimpleDateFormat(format, Locale.US);
sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
formatMap.get().put(format, sdf);
}
try {
return sdf.parse(name);
} catch (ParseException pe) {
throw new TwitterException("Unexpected date format(" + name + ") returned from twitter.com", pe);
}
}
public static int getInt(String name, JSONObject json) {
return getInt(getRawString(name, json));
}
public static int getInt(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 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 -1;
} else {
// some count over 100 will be expressed as "100+"
if (str.endsWith("+")) {
str = str.substring(0, str.length() - 1);
return Long.valueOf(str) + 1;
}
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 int toAccessLevel(HttpResponse res) {
if (null == res) {
return -1;
}
String xAccessLevel = res.getResponseHeader("X-Access-Level");
int accessLevel;
if (null == xAccessLevel) {
accessLevel = TwitterResponse.NONE;
} else {
// https://dev.twitter.com/pages/application-permission-model-faq#how-do-we-know-what-the-access-level-of-a-user-token-is
switch (xAccessLevel.length()) {
// “read” (Read-only)
case 4:
accessLevel = TwitterResponse.READ;
break;
case 10:
// “read-write” (Read & Write)
accessLevel = TwitterResponse.READ_WRITE;
break;
case 25:
// “read-write-directmessages” (Read, Write, & Direct Message)
accessLevel = TwitterResponse.READ_WRITE_DIRECTMESSAGES;
break;
case 26:
// “read-write-privatemessages” (Read, Write, & Direct Message)
accessLevel = TwitterResponse.READ_WRITE_DIRECTMESSAGES;
break;
default:
accessLevel = TwitterResponse.NONE;
// unknown access level;
}
}
return accessLevel;
}
}