On Wed, 28 Apr 2021 12:47:36 GMT, Chris Hegarty <[email protected]> wrote:
>> Maurizio Cimadamore has updated the pull request incrementally with one
>> additional commit since the last revision:
>>
>> Address first batch of review comments
>
> src/jdk.incubator.foreign/share/classes/jdk/incubator/foreign/CLinker.java
> line 270:
>
>> 268:
>> 269: /**
>> 270: * Converts a Java string into a null-terminated C string, using
>> the platform's default charset,
>
> Sorry if this has come up before, but, is the platform's default charset the
> right choice here? For other areas, we choose UTF-8 as the default. In fact,
> there is a draft JEP to move the default charset to UTF-8. So if there is an
> implicit need to match the underlying platform's charset then this may need
> to be revisited. For now, I just want to check that this is not an
> accidental reliance on the platform's default charset, but a deliberate one.
I believe here the goal is to be consistent with `String::getBytes`:
/**
* Encodes this {@code String} into a sequence of bytes using the
* platform's default charset, storing the result into a new byte array.
*
* <p> The behavior of this method when this string cannot be encoded in
* the default charset is unspecified. The {@link
* java.nio.charset.CharsetEncoder} class should be used when more control
* over the encoding process is required.
*
* @return The resultant byte array
*
* @since 1.1
*/
public byte[] getBytes() {
return encode(Charset.defaultCharset(), coder(), value);
}
So, you are right in that there's an element of platform-dependency here - but
I think it's a dependency that users learned to "ignore" mostly. If developers
want to be precise, and platform independent, they can always use the
Charset-accepting method. Of course this could be revisited, but I think there
is some consistency in what the API is trying to do. If, in the future,
defaultCharset will just be Utf8 - well, that's ok too - as long as the method
is specified to be "defaultCharset" dependent, what's behind "defaultCharset"
is an implementation detail that the user will have to be aware of one way or
another.
-------------
PR: https://git.openjdk.java.net/jdk/pull/3699
