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| Re: weird encoding problem with properties-files [message #899415 is a reply to message #899325] |
Tue, 31 July 2012 18:10   |
 Sebastian Zarnekow
Messages: 3108
Registered: July 2009 |
Senior Member |
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Hi Annette,
we use IFile.getCharset to determine the encoding. You want to bind a
custom IFileSystemAccess that returns ISO-8859-1 if the file extension
is *.properties?
Regards,
Sebastian
--
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Am 31.07.12 15:28, schrieb Annette Pohl:
> Hi!
>
> I am working on a DSL that generates properties files in order to deal
> with translations. I came across a weird encoding problem:
> The encoding for properties files must be ISO-8859-1. Eclipse sets the
> encoding automatically correct as soon as the properties file is
> created. But when the generator is called for the first time, the
> properties file is corrupted, although the encoding is correct.
>
> You might want to try the following example:
>
> grammar:
>
>
> Model:
> keyAndValues+=KeyAndValue*;
>
> KeyAndValue:
> name = ID value = STRING;
>
> generator:
>
>
> class MyDslGenerator implements IGenerator {
>
> override void doGenerate(Resource resource, IFileSystemAccess fsa) {
> if (resource.contents.size > 0) {
> val model = resource.contents.get(0) as Model;
> fsa.generateFile("test.properties",
> generatePropertyFile(model));
> }
> }
>
> def generatePropertyFile(Model it) '''
> «FOR KeyAndValue keyAndValue : keyAndValues»
> «keyAndValue(keyAndValue)»
> «ENDFOR»
> '''
>
> def keyAndValue(KeyAndValue it) '''«name» = «value»'''
> }
>
>
> test.mydsl:
>
>
> testKey1 = äöü
>
>
> results in test.properties:
>
>
> testKey1 = aöü
>
>
> If you call fsa.generateFile twice, everything is fine.
>
> I debugged into EclipseResourceFileSystemAccess2 and saw that there is a
> distinction if the file already exists or not. Maybe eclipse sets the
> encoding to ISO-8859-1 after the file was generated and the content
> written to it and corrupts it by doing so?
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| Re: weird encoding problem with properties-files [message #899526 is a reply to message #899415] |
Wed, 01 August 2012 09:48 |
Annette Pohl
Messages: 7
Registered: July 2012 |
Junior Member |
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Hi Sebastian,
thanks for your answer. This is working now:
public class MyDslFileSystemAccess extends EclipseResourceFileSystemAccess2 {
private static final Logger LOGGER = LoggerFactory.getLogger( MyDslFileSystemAccess.class );
@Override
protected IFile getFile( String fileName, String outputName ) {
IFile file = super.getFile( fileName, outputName );
if (fileName != null && fileName.endsWith( "properties" ) && !file.exists()) {
try {
file.create(getInputStream("", file.getCharset(true)), true, getMonitor());
} catch (CoreException e) {
LOGGER.error( "failed to create file {} : {}", fileName, e.getMessage() );
}
}
return file;
}
}
I tried first to set the charset for file, but I got an exception when I called the generator the first time and the properties file did not exist yet. The exception complained that the resource did not exist. When I called the generator the second time everything was working and the charset could be set - but this was working anyway. My problem was the first call of the code generator.
So I created the file before setting the charset and now it was working. Then I tried if it was necessary to set the charset and found out that it was not. Creating the file was enough.
Thanks for your help - it pointed me to the right direction.
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