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Code Issues Releases Wiki Activity

Fix read methods failing on malformed unicode.

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Java configured the charset decoders/encoders for streams to REPLACE
malformed characters rather than the default REPORT. It does not do the
same for channels, and so we were catching an IO exception and returning
null.
This commit is contained in:
SquidDev 2018-11-16 20:58:49 +00:00
parent 5fa01f8b96
commit 43459ec825
2 changed files with 17 additions and 3 deletions
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11
src/main/java/dan200/computercraft/core/apis/handles/EncodedReadableHandle.java
View File

@ -10,6 +10,8 @@ import java.io.IOException;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CodingErrorAction;
import java.nio.charset.StandardCharsets;
import static dan200.computercraft.core.apis.ArgumentHelper.optBoolean;
@ -35,7 +37,7 @@ public class EncodedReadableHandle extends HandleGeneric
@Nonnull
@Override
public String[] getMethodNames()
{
{
return new String[] {
"readLine",
"readAll",
@ -160,6 +162,11 @@ public class EncodedReadableHandle extends HandleGeneric
public static BufferedReader open( ReadableByteChannel channel, Charset charset )
{
return new BufferedReader( Channels.newReader( channel, charset.newDecoder(), -1 ) );
// Create a charset decoder with the same properties as StreamDecoder does for
// InputStreams: namely, replace everything instead of erroring.
CharsetDecoder decoder = charset.newDecoder()
.onMalformedInput( CodingErrorAction.REPLACE )
.onUnmappableCharacter( CodingErrorAction.REPLACE );
return new BufferedReader( Channels.newReader( channel, decoder, -1 ) );
}
}

9
src/main/java/dan200/computercraft/core/apis/handles/EncodedWritableHandle.java
View File

@ -10,6 +10,8 @@ import java.io.IOException;
import java.nio.channels.Channels;
import java.nio.channels.WritableByteChannel;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.nio.charset.CodingErrorAction;
import java.nio.charset.StandardCharsets;
public class EncodedWritableHandle extends HandleGeneric
@ -120,6 +122,11 @@ public class EncodedWritableHandle extends HandleGeneric
public static BufferedWriter open( WritableByteChannel channel, Charset charset )
{
return new BufferedWriter( Channels.newWriter( channel, charset.newEncoder(), -1 ) );
// Create a charset encoder with the same properties as StreamEncoder does for
// OutputStreams: namely, replace everything instead of erroring.
CharsetEncoder encoder = charset.newEncoder()
.onMalformedInput( CodingErrorAction.REPLACE)
.onUnmappableCharacter(CodingErrorAction.REPLACE);
return new BufferedWriter( Channels.newWriter( channel, encoder, -1 ) );
}
}