1/**
2*******************************************************************************
3* Copyright (C) 1996-2006, International Business Machines Corporation and    *
4* others. All Rights Reserved.                                                *
5*******************************************************************************
6*
7*******************************************************************************
8*/
9
10package libcore.icu;
11
12import java.nio.charset.Charset;
13import java.nio.charset.CharsetDecoder;
14import java.nio.charset.CharsetEncoder;
15import java.nio.charset.CodingErrorAction;
16
17public 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 void setCallbackDecode(long converterHandle, CharsetDecoder decoder) {
58        setCallbackDecode(converterHandle,
59                          translateCodingErrorAction(decoder.malformedInputAction()),
60                          translateCodingErrorAction(decoder.unmappableCharacterAction()),
61                          decoder.replacement());
62    }
63    private static native void setCallbackDecode(long converterHandle, int onMalformedInput, int onUnmappableInput, String subChars);
64
65    public static void setCallbackEncode(long converterHandle, CharsetEncoder encoder) {
66        setCallbackEncode(converterHandle,
67                          translateCodingErrorAction(encoder.malformedInputAction()),
68                          translateCodingErrorAction(encoder.unmappableCharacterAction()),
69                          encoder.replacement());
70    }
71    private static native void setCallbackEncode(long converterHandle, int onMalformedInput, int onUnmappableInput, byte[] subBytes);
72}
73