NamingUtils.java

   1 package org.argeo.naming;
   2
   3 import java.io.UnsupportedEncodingException;
   4 import java.net.URI;
   5 import java.net.URLDecoder;
   6 import java.nio.charset.StandardCharsets;
   7 import java.time.Instant;
   8 import java.time.OffsetDateTime;
   9 import java.time.ZoneOffset;
  10 import java.time.ZonedDateTime;
  11 import java.time.format.DateTimeFormatter;
  12 import java.time.temporal.ChronoField;
  13 import java.util.Calendar;
  14 import java.util.GregorianCalendar;
  15 import java.util.LinkedHashMap;
  16 import java.util.LinkedList;
  17 import java.util.List;
  18 import java.util.Map;
  19
  20 public class NamingUtils {
  21         private final static DateTimeFormatter utcLdapDate = DateTimeFormatter.ofPattern("uuuuMMddHHmmssX")
  22                         .withZone(ZoneOffset.UTC);
  23
  24         public static Instant ldapDateToInstant(String ldapDate) {
  25                 return OffsetDateTime.parse(ldapDate, utcLdapDate).toInstant();
  26         }
  27
  28         public static Calendar ldapDateToCalendar(String ldapDate) {
  29                 OffsetDateTime instant = OffsetDateTime.parse(ldapDate, utcLdapDate);
  30                 GregorianCalendar calendar = new GregorianCalendar();
  31                 calendar.set(calendar.DAY_OF_MONTH, instant.get(ChronoField.DAY_OF_MONTH));
  32                 calendar.set(calendar.MONTH, instant.get(ChronoField.MONTH_OF_YEAR));
  33                 calendar.set(calendar.YEAR, instant.get(ChronoField.YEAR));
  34                 return calendar;
  35         }
  36
  37         public static String instantToLdapDate(ZonedDateTime instant) {
  38                 return utcLdapDate.format(instant.withZoneSameInstant(ZoneOffset.UTC));
  39         }
  40
  41         public static String getQueryValue(Map<String, List<String>> query, String key) {
  42                 if (!query.containsKey(key))
  43                         return null;
  44                 List<String> val = query.get(key);
  45                 if (val.size() == 1)
  46                         return val.get(0);
  47                 else
  48                         throw new IllegalArgumentException("There are " + val.size() + " value(s) for " + key);
  49         }
  50
  51         public static Map<String, List<String>> queryToMap(URI uri) {
  52                 return queryToMap(uri.getQuery());
  53         }
  54
  55         private static Map<String, List<String>> queryToMap(String queryPart) {
  56                 try {
  57                         final Map<String, List<String>> query_pairs = new LinkedHashMap<String, List<String>>();
  58                         if (queryPart == null)
  59                                 return query_pairs;
  60                         final String[] pairs = queryPart.split("&");
  61                         for (String pair : pairs) {
  62                                 final int idx = pair.indexOf("=");
  63                                 final String key = idx > 0 ? URLDecoder.decode(pair.substring(0, idx), StandardCharsets.UTF_8.name())
  64                                                 : pair;
  65                                 if (!query_pairs.containsKey(key)) {
  66                                         query_pairs.put(key, new LinkedList<String>());
  67                                 }
  68                                 final String value = idx > 0 && pair.length() > idx + 1
  69                                                 ? URLDecoder.decode(pair.substring(idx + 1), StandardCharsets.UTF_8.name()) : null;
  70                                 query_pairs.get(key).add(value);
  71                         }
  72                         return query_pairs;
  73                 } catch (UnsupportedEncodingException e) {
  74                         throw new IllegalArgumentException("Cannot convert " + queryPart + " to map", e);
  75                 }
  76         }
  77
  78         private NamingUtils() {
  79
  80         }
  81
  82         public static void main(String args[]) {
  83                 ZonedDateTime now = ZonedDateTime.now().withZoneSameInstant(ZoneOffset.UTC);
  84                 String str = utcLdapDate.format(now);
  85                 System.out.println(str);
  86                 utcLdapDate.parse(str);
  87                 utcLdapDate.parse("19520512000000Z");
  88         }
  89 }