import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
+import java.io.Writer;
import java.nio.file.Files;
import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.time.ZonedDateTime;
+import java.time.temporal.ChronoUnit;
+import java.time.temporal.Temporal;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Hashtable;
-import java.util.Map;
import java.util.Properties;
+import javax.naming.InvalidNameException;
+import javax.naming.ldap.LdapName;
+
public class LangUtils {
/*
* NON-API OSGi
* Creates a new {@link Dictionary} with one key-value pair (neither key not
* value should be null)
*/
- public static Dictionary<String, Object> init(String key, Object value) {
+ public static Dictionary<String, Object> dico(String key, Object value) {
assert key != null;
assert value != null;
Hashtable<String, Object> props = new Hashtable<>();
return new DictionaryKeys(props);
}
- public static String toJson(Dictionary<String, ?> props) {
+ static String toJson(Dictionary<String, ?> props) {
return toJson(props, false);
}
- public static String toJson(Dictionary<String, ?> props, boolean pretty) {
+ static String toJson(Dictionary<String, ?> props, boolean pretty) {
StringBuilder sb = new StringBuilder();
sb.append('{');
if (pretty)
return sb.toString();
}
- public static void storeAsProperties(Dictionary<String, Object> props, Path path) throws IOException {
+ static void storeAsProperties(Dictionary<String, Object> props, Path path) throws IOException {
if (props == null)
throw new IllegalArgumentException("Props cannot be null");
Properties toStore = new Properties();
}
}
- public static Dictionary<String, Object> loadFromProperties(Path path) throws IOException {
+ static void appendAsLdif(String dnBase, String dnKey, Dictionary<String, Object> props, Path path)
+ throws IOException {
+ if (props == null)
+ throw new IllegalArgumentException("Props cannot be null");
+ Object dnValue = props.get(dnKey);
+ String dnStr = dnKey + '=' + dnValue + ',' + dnBase;
+ LdapName dn;
+ try {
+ dn = new LdapName(dnStr);
+ } catch (InvalidNameException e) {
+ throw new IllegalArgumentException("Cannot interpret DN " + dnStr, e);
+ }
+ if (dnValue == null)
+ throw new IllegalArgumentException("DN key " + dnKey + " must have a value");
+ try (Writer writer = Files.newBufferedWriter(path, StandardOpenOption.APPEND, StandardOpenOption.CREATE)) {
+ writer.append("\ndn: ");
+ writer.append(dn.toString());
+ writer.append('\n');
+ for (Enumeration<String> keys = props.keys(); keys.hasMoreElements();) {
+ String key = keys.nextElement();
+ Object value = props.get(key);
+ writer.append(key);
+ writer.append(": ");
+ // FIXME deal with binary and multiple values
+ writer.append(value.toString());
+ writer.append('\n');
+ }
+ }
+ }
+
+ static Dictionary<String, Object> loadFromProperties(Path path) throws IOException {
Properties toLoad = new Properties();
try (InputStream in = Files.newInputStream(path)) {
toLoad.load(in);
return res;
}
+ /*
+ * EXCEPTIONS
+ */
+ /**
+ * Chain the messages of all causes (one per line, <b>starts with a line
+ * return</b>) without all the stack
+ */
+ public static String chainCausesMessages(Throwable t) {
+ StringBuffer buf = new StringBuffer();
+ chainCauseMessage(buf, t);
+ return buf.toString();
+ }
+
+ /** Recursive chaining of messages */
+ private static void chainCauseMessage(StringBuffer buf, Throwable t) {
+ buf.append('\n').append(' ').append(t.getClass().getCanonicalName()).append(": ").append(t.getMessage());
+ if (t.getCause() != null)
+ chainCauseMessage(buf, t.getCause());
+ }
+
+ /*
+ * TIME
+ */
+ /** Formats time elapsed since start. */
+ public static String since(ZonedDateTime start) {
+ ZonedDateTime now = ZonedDateTime.now();
+ return duration(start, now);
+ }
+
+ /** Formats a duration. */
+ public static String duration(Temporal start, Temporal end) {
+ long count = ChronoUnit.DAYS.between(start, end);
+ if (count != 0)
+ return count > 1 ? count + " days" : count + " day";
+ count = ChronoUnit.HOURS.between(start, end);
+ if (count != 0)
+ return count > 1 ? count + " hours" : count + " hours";
+ count = ChronoUnit.MINUTES.between(start, end);
+ if (count != 0)
+ return count > 1 ? count + " minutes" : count + " minute";
+ count = ChronoUnit.SECONDS.between(start, end);
+ return count > 1 ? count + " seconds" : count + " second";
+ }
+
/** Singleton constructor. */
private LangUtils() {