33 lines
711 B
Java
33 lines
711 B
Java
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package org.thoughtcrime.securesms.sms;
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import java.util.HashMap;
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public class MultipartSmsIdentifier {
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private static final MultipartSmsIdentifier instance = new MultipartSmsIdentifier();
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public static MultipartSmsIdentifier getInstance() {
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return instance;
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}
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private final HashMap<String, Integer> idMap = new HashMap<String, Integer>();
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public synchronized byte getIdForRecipient(String recipient) {
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Integer currentId;
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if (idMap.containsKey(recipient)) {
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currentId = idMap.get(recipient);
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idMap.remove(recipient);
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} else {
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currentId = 0;
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}
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byte id = currentId.byteValue();
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idMap.put(recipient, (currentId + 1) % 255);
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return id;
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}
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}
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