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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 charsetName);
     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 String[] getAvailableCharsetNames();
     40     public static native Charset charsetForName(String charsetName);
     41 
     42     // Translates from Java's enum to the magic numbers #defined in "NativeConverter.cpp".
     43     private static int translateCodingErrorAction(CodingErrorAction action) {
     44         if (action == CodingErrorAction.REPORT) {
     45             return 0;
     46         } else if (action == CodingErrorAction.IGNORE) {
     47             return 1;
     48         } else if (action == CodingErrorAction.REPLACE) {
     49             return 2;
     50         } else {
     51             throw new AssertionError(); // Someone changed the enum.
     52         }
     53     }
     54 
     55     public static void setCallbackDecode(long converterHandle, CharsetDecoder decoder) {
     56         setCallbackDecode(converterHandle,
     57                           translateCodingErrorAction(decoder.malformedInputAction()),
     58                           translateCodingErrorAction(decoder.unmappableCharacterAction()),
     59                           decoder.replacement());
     60     }
     61     private static native void setCallbackDecode(long converterHandle, int onMalformedInput, int onUnmappableInput, String subChars);
     62 
     63     public static void setCallbackEncode(long converterHandle, CharsetEncoder encoder) {
     64         setCallbackEncode(converterHandle,
     65                           translateCodingErrorAction(encoder.malformedInputAction()),
     66                           translateCodingErrorAction(encoder.unmappableCharacterAction()),
     67                           encoder.replacement());
     68     }
     69     private static native void setCallbackEncode(long converterHandle, int onMalformedInput, int onUnmappableInput, byte[] subBytes);
     70 }
     71