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play.utils.Utils Maven / Gradle / Ivy
package play.utils;
import play.Play;
import play.mvc.Scope;
import java.lang.annotation.Annotation;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* Generic utils
*/
public class Utils {
public static String join(Iterable values, String separator) {
if (values == null) {
return "";
}
Iterator iter = values.iterator();
if (!iter.hasNext()) {
return "";
}
StringBuilder toReturn = new StringBuilder(String.valueOf(iter.next()));
while (iter.hasNext()) {
toReturn.append(separator).append(iter.next());
}
return toReturn.toString();
}
public static String join(String[] values, String separator) {
return (values == null) ? "" : join(Arrays.asList(values), separator);
}
public static String join(Annotation[] values, String separator) {
return (values == null) ? "" : join(Arrays.asList(values), separator);
}
public static String getSimpleNames(Annotation[] values) {
if (values == null) {
return "";
}
List a = Arrays.asList(values);
Iterator iter = a.iterator();
if (!iter.hasNext()) {
return "";
}
StringBuilder toReturn = new StringBuilder("@" + iter.next().annotationType().getSimpleName());
while (iter.hasNext()) {
toReturn.append(", @").append(iter.next().annotationType().getSimpleName());
}
return toReturn.toString();
}
/**
* @deprecated Use Utils.join(values, " ");
*/
@Deprecated
public static String toString(Annotation[] values) {
return join(values, " ");
}
public static String open(String file, Integer line) {
if (Play.configuration.containsKey("play.editor")) {
return String.format(Play.configuration.getProperty("play.editor"), Play.getFile(file).getAbsolutePath(), line);
}
return null;
}
/**
* for java.util.Map
*/
public static class Maps {
public static void mergeValueInMap(Map map, String name, String value) {
String[] newValues = null;
String[] oldValues = map.get(name);
if (oldValues == null) {
newValues = new String[1];
newValues[0] = value;
} else {
newValues = new String[oldValues.length + 1];
System.arraycopy(oldValues, 0, newValues, 0, oldValues.length);
newValues[oldValues.length] = value;
}
map.put(name, newValues);
}
public static void mergeValueInMap(Map map, String name, String[] values) {
for (String value : values) {
mergeValueInMap(map, name, value);
}
}
public static Map filterMap(Map map, String keypattern) {
try {
@SuppressWarnings("unchecked")
Map filtered = map.getClass().newInstance();
for (Map.Entry entry : map.entrySet()) {
K key = entry.getKey();
if (key.toString().matches(keypattern)) {
filtered.put(key, entry.getValue());
}
}
return filtered;
} catch (Exception iex) {
return null;
}
}
}
private static final ThreadLocal httpFormatter = new ThreadLocal<>();
public static SimpleDateFormat getHttpDateFormatter() {
if (httpFormatter.get() == null) {
httpFormatter.set(new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.US));
httpFormatter.get().setTimeZone(TimeZone.getTimeZone("GMT"));
}
return httpFormatter.get();
}
public static Map filterMap(Map map, String prefix) {
Map newMap = new HashMap<>();
for (String key : map.keySet()) {
if (!key.startsWith(prefix + ".")) {
newMap.put(key, map.get(key));
}
}
return newMap;
}
public static Map filterParams(Scope.Params params, String prefix) {
return filterParams(params.all(), prefix);
}
public static Map filterParams(Map params, String prefix, String separator) {
Map filteredMap = new LinkedHashMap<>();
prefix += ".";
for(Map.Entry e: params.entrySet()){
if(e.getKey().startsWith(prefix)) {
filteredMap.put(
e.getKey().substring(prefix.length()),
Utils.join(e.getValue(), separator)
);
}
}
return filteredMap;
}
public static Map filterParams(Map params, String prefix) {
return filterParams(params, prefix, ", ");
}
public static void kill(String pid) throws Exception {
String os = System.getProperty("os.name");
String command = (os.startsWith("Windows"))
? "taskkill /F /PID " + pid
: "kill " + pid;
Runtime.getRuntime().exec(command).waitFor();
}
public static class AlternativeDateFormat {
Locale locale;
List formats = new ArrayList<>();
public AlternativeDateFormat(Locale locale, String... alternativeFormats) {
super();
this.locale = locale;
setFormats(alternativeFormats);
}
public void setFormats(String... alternativeFormats) {
for (String format : alternativeFormats) {
formats.add(new SimpleDateFormat(format, locale));
}
}
public Date parse(String source) throws ParseException {
for (SimpleDateFormat dateFormat : formats) {
if (source.length() == dateFormat.toPattern().replace("\'", "").length()) {
try {
return dateFormat.parse(source);
} catch (ParseException ex) {
}
}
}
throw new ParseException("Date format not understood", 0);
}
static final ThreadLocal dateformat = new ThreadLocal<>();
public static AlternativeDateFormat getDefaultFormatter() {
if (dateformat.get() == null) {
dateformat.set(new AlternativeDateFormat(Locale.US,
"yyyy-MM-dd'T'HH:mm:ss'Z'", // ISO8601 + timezone
"yyyy-MM-dd'T'HH:mm:ss", // ISO8601
"yyyy-MM-dd HH:mm:ss",
"yyyyMMdd HHmmss",
"yyyy-MM-dd",
"yyyyMMdd'T'HHmmss",
"yyyyMMddHHmmss",
"dd'/'MM'/'yyyy",
"dd-MM-yyyy",
"dd'/'MM'/'yyyy HH:mm:ss",
"dd-MM-yyyy HH:mm:ss",
"ddMMyyyy HHmmss",
"ddMMyyyy"));
}
return dateformat.get();
}
}
public static String urlDecodePath(String enc) {
try {
return URLDecoder.decode(enc.replaceAll("\\+", "%2B"),Play.defaultWebEncoding);
} catch(Exception e) {
return enc;
}
}
public static String urlEncodePath(String plain) {
try {
return URLEncoder.encode(plain,Play.defaultWebEncoding);
} catch(Exception e) {
return plain;
}
}
}
