NativeConverter.java revision 111fdf10801861427f59e42c34c40d5df484053b
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 libcore.util.NativeAllocationRegistry; 13 14import java.nio.charset.Charset; 15import java.nio.charset.CharsetDecoder; 16import java.nio.charset.CharsetEncoder; 17import java.nio.charset.CodingErrorAction; 18 19public final class NativeConverter { 20 private static final NativeAllocationRegistry registry = new NativeAllocationRegistry( 21 NativeConverter.class.getClassLoader(), getNativeFinalizer(), getNativeSize()); 22 23 public static native int decode(long converterHandle, byte[] input, int inEnd, 24 char[] output, int outEnd, int[] data, boolean flush); 25 26 public static native int encode(long converterHandle, char[] input, int inEnd, 27 byte[] output, int outEnd, int[] data, boolean flush); 28 29 public static native long openConverter(String charsetName); 30 public static native void closeConverter(long converterHandle); 31 32 public static void registerConverter(Object referrent, long converterHandle) { 33 registry.registerNativeAllocation(referrent, converterHandle); 34 } 35 36 public static native void resetByteToChar(long converterHandle); 37 public static native void resetCharToByte(long converterHandle); 38 39 public static native byte[] getSubstitutionBytes(long converterHandle); 40 41 public static native int getMaxBytesPerChar(long converterHandle); 42 public static native int getMinBytesPerChar(long converterHandle); 43 public static native float getAveBytesPerChar(long converterHandle); 44 public static native float getAveCharsPerByte(long converterHandle); 45 46 public static native boolean contains(String converterName1, String converterName2); 47 48 public static native String[] getAvailableCharsetNames(); 49 public static native Charset charsetForName(String charsetName); 50 51 // Translates from Java's enum to the magic numbers #defined in "NativeConverter.cpp". 52 private static int translateCodingErrorAction(CodingErrorAction action) { 53 if (action == CodingErrorAction.REPORT) { 54 return 0; 55 } else if (action == CodingErrorAction.IGNORE) { 56 return 1; 57 } else if (action == CodingErrorAction.REPLACE) { 58 return 2; 59 } else { 60 throw new AssertionError(); // Someone changed the enum. 61 } 62 } 63 64 public static void setCallbackDecode(long converterHandle, CharsetDecoder decoder) { 65 setCallbackDecode(converterHandle, 66 translateCodingErrorAction(decoder.malformedInputAction()), 67 translateCodingErrorAction(decoder.unmappableCharacterAction()), 68 decoder.replacement()); 69 } 70 private static native void setCallbackDecode(long converterHandle, int onMalformedInput, int onUnmappableInput, String subChars); 71 72 public static void setCallbackEncode(long converterHandle, CharsetEncoder encoder) { 73 setCallbackEncode(converterHandle, 74 translateCodingErrorAction(encoder.malformedInputAction()), 75 translateCodingErrorAction(encoder.unmappableCharacterAction()), 76 encoder.replacement()); 77 } 78 private static native void setCallbackEncode(long converterHandle, int onMalformedInput, int onUnmappableInput, byte[] subBytes); 79 80 public static native long getNativeFinalizer(); 81 public static native long getNativeSize(); 82} 83