RFR: JDK-8080679: Include jline in JDK for Java and JavaScript REPLs

[Erik Joelsson]

Hello Jan,

Build changes look mostly ok. Some notes:

* "$(CFLAGS_WARNINGS_ARE_ERRORS)", which should not be used anymore. 
Warnings are already treated as errors globally.

* There should not be a need to add "-I$(INCLUDEDIR) 
-I$(JDK_OUTPUTDIR)/include/$(OPENJDK_TARGET_OS)" to cflags. INCLUDEDIR 
is undefined AFAIK, and the other dir is already in CFLAGS_JDKLIB.

I'm guessing that you copied Lib-jdk.jdi.gmk as a template. Is the 
-DUSE_MMAP just an artifact of that copy or do you know that it is needed?

/Erik

On 2015-06-18 16:25, Jan Lahoda wrote:
> Hello,
>
> I am proposing to add JLine 2.12.1 into the jdk repository for use by 
> the Java and Nashorn REPLs. Full patch is available here:
> http://cr.openjdk.java.net/~jlahoda/8080679/webrev.00/full/
>
> To aid the review, I've split this patch into to smaller patches:
> -a patch that only adds unmodified jline sources at appropriate places 
> in the jdk repository:
> http://cr.openjdk.java.net/~jlahoda/8080679/webrev.00/clean-jline/
>
> -a patch that shows the additional changes I've done:
> http://cr.openjdk.java.net/~jlahoda/8080679/webrev.00/additional/
>
> This split is intended solely to simplify reviewing, my plan is to 
> integrate this as a single patch.
>
> The main additional changes are:
> -plugging the new module, jdk.jline, into the JDK build. Currently, 
> the JLine packages are exported only to jdk.scripting.nashorn (the 
> plan is to also export them to the future jdk.jshell module). (The 
> patch is not adding the dependency from jdk.scripting.nashorn to 
> jdk.jline, though - I expect that to be added when needed.)
> -the sources are re-packaged from package "jline" to "jdk.internal.jline"
> -removing trailing whitespace, adding newlines at the end of the 
> files, encoding characters that are not ASCII
> -avoiding the dependency on another library, jansi, by reimplementing 
> two elements that were used from the other library. These are mainly 
> the changes in WindowsTerminal and ConsoleReader.java. This also 
> includes the WindowsTerminal.cpp native library. The native part is 
> heavily inspired by:
> http://cr.openjdk.java.net/~sherman/rl/src/java.base/windows/native/libjava/Console_md.c.html 
>
> As I am not experienced in native programming, comments to the native 
> part would be particularly useful.
> -changes to resolve javac warnings in JLine.
> -tests for some of the added functionality.
>
> Any comments are welcome!
>
> Thanks,
>     Jan