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      1 /**
      2 *******************************************************************************
      3 * Copyright (C) 1996-2006, International Business Machines Corporation and    *
      4 * others. All Rights Reserved.                                                *
      5 *******************************************************************************
      6 *
      7 *******************************************************************************
      8 */
      9 
     10 package libcore.icu;
     11 
     12 import java.nio.charset.Charset;
     13 import java.nio.charset.CharsetDecoder;
     14 import java.nio.charset.CharsetEncoder;
     15 import java.nio.charset.CodingErrorAction;
     16 
     17 public final class NativeConverter {
     18     public static native int decode(long converterHandle, byte[] input, int inEnd,
     19             char[] output, int outEnd, int[] data, boolean flush);
     20 
     21     public static native int encode(long converterHandle, char[] input, int inEnd,
     22             byte[] output, int outEnd, int[] data, boolean flush);
     23 
     24     public static native long openConverter(String encoding);
     25     public static native void closeConverter(long converterHandle);
     26 
     27     public static native void resetByteToChar(long converterHandle);
     28     public static native void resetCharToByte(long converterHandle);
     29 
     30     public static native byte[] getSubstitutionBytes(long converterHandle);
     31 
     32     public static native int getMaxBytesPerChar(long converterHandle);
     33     public static native int getMinBytesPerChar(long converterHandle);
     34     public static native float getAveBytesPerChar(long converterHandle);
     35     public static native float getAveCharsPerByte(long converterHandle);
     36 
     37     public static native boolean contains(String converterName1, String converterName2);
     38 
     39     public static native boolean canEncode(long converterHandle, int codeUnit);
     40 
     41     public static native String[] getAvailableCharsetNames();
     42     public static native Charset charsetForName(String charsetName);
     43 
     44     // Translates from Java's enum to the magic numbers #defined in "NativeConverter.cpp".
     45     private static int translateCodingErrorAction(CodingErrorAction action) {
     46         if (action == CodingErrorAction.REPORT) {
     47             return 0;
     48         } else if (action == CodingErrorAction.IGNORE) {
     49             return 1;
     50         } else if (action == CodingErrorAction.REPLACE) {
     51             return 2;
     52         } else {
     53             throw new AssertionError(); // Someone changed the enum.
     54         }
     55     }
     56 
     57     public static int setCallbackDecode(long converterHandle, CharsetDecoder decoder) {
     58         return setCallbackDecode(converterHandle,
     59                 translateCodingErrorAction(decoder.malformedInputAction()),
     60                 translateCodingErrorAction(decoder.unmappableCharacterAction()),
     61                 decoder.replacement());
     62     }
     63     private static native int setCallbackDecode(long converterHandle, int onMalformedInput, int onUnmappableInput, String subChars);
     64 
     65     public static int setCallbackEncode(long converterHandle, CharsetEncoder encoder) {
     66         return setCallbackEncode(converterHandle,
     67                 translateCodingErrorAction(encoder.malformedInputAction()),
     68                 translateCodingErrorAction(encoder.unmappableCharacterAction()),
     69                 encoder.replacement());
     70     }
     71     private static native int setCallbackEncode(long converterHandle, int onMalformedInput, int onUnmappableInput, byte[] subBytes);
     72 }
     73