I am working on writing a native app written in Kotlin and compiled with the GraalVM. Part of this requires me to open and manage spreadsheets (xlsx).
When I run the app in vm mode using any JVM, including Graal, everything works fine. However, when I compile the app native, I get an error when I attempt to open the same excel file as the one I open in the JVM. For the record, I am using apache POI
UnsupportedCharsetException: CP1252
Can someone explain why it works in JVM mode but not native?
a snippet of the stacktrace:
java.lang.ExceptionInInitializerError: null
at org.apache.poi.poifs.filesystem.FileMagic.<init>(FileMagic.java:133) ~[pikr:5.2.3]
at org.apache.poi.poifs.filesystem.FileMagic.<clinit>(FileMagic.java:74) ~[pikr:5.2.3]
And the code in question in POI:
FileMagic(String... magic) {
this.magic = new byte[magic.length][];
int i=0;
for (String s : magic) {
this.magic[i++] = s.getBytes(LocaleUtil.CHARSET_1252);
}
}
Try adding -H:+AddAllCharsets to your command line.
There must be some way to add a few specified charsets only, but I cannot find it in the options (native-image --expert-options-all)
Related
I'm working on a Kotlin multi-platform project, and I need my JS tests to run on Node.js but with custom command line arguments (specifically I need node to run with the --expose-gc flag, because some tests need to trigger garbage collection).
Looking at the documentation for the Gradle Kotlin JS DSL I didn't find any mention of how to do that; does anyone know whether it's at all possible and how?
Unfortunately can not answer your question directly, but there is some suggestion to help you with reverse engineering.
Let's start from some example. We have Gradle tasks to run our project using webpack's dev server such as browserDevelopmentRun, browserProductionRun (not sure if multi-platform projects have it, but JS projects do). We can add:
println(tasks.named("browserProductionRun").get().javaClass)
to build.gradle.kts to find out the exact class used for this task. When we sync Gradle, it outputs:
org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpack_Decorated
Now we know the exact class of this task so we can investigate its API. The auto completion or navigating inside of the KotlinWebpack class helps us to find out that it has a helpful nodeArgs property to configure NodeJS arguments for it, so we can set them, for example:
tasks.named("browserProductionRun", org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpack::class).get().nodeArgs.add("--trace-deprecation")
Getting back to your question.
In your case I guess you need to investigate the browserTest task. Let's get some info about it by adding:
println(tasks.named("browserTest").get().javaClass)
to build.gradle.kts - a-ha - it seems to be of the org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest_Decorated type. Let's check what's inside. Open KotlinJsTest.kt somehow - for example by typing its name into the window being opened by CMD + Shift + O (make sure to select "All Places" here) or just by typing its name somewhere in build.gradle.kts and navigating inside it.
The only interesting thing I see inside this open class is the following block:
override fun createTestExecutionSpec(): TCServiceMessagesTestExecutionSpec {
val forkOptions = DefaultProcessForkOptions(fileResolver)
forkOptions.workingDir = npmProject.dir
forkOptions.executable = nodeJs.requireConfigured().nodeExecutable
val nodeJsArgs = mutableListOf<String>()
return testFramework!!.createTestExecutionSpec(
task = this,
forkOptions = forkOptions,
nodeJsArgs = nodeJsArgs,
debug = debug
)
}
So maybe it can work out to create your own extension of this class, override its createTestExecutionSpec method and provide nodeJsArgs as you need inside it. After that you'll be needing to declare another Gradle task to launch tests inside build.gradle.kts which will use this new extended class.
I'm trying to run the amazon-provided python AWS Example for transcribing an audio file in a Java program using "System.exec()". I've substituted the various parts of the program to use parameters passed in. This code works as expected on a Mac, but in Windows (under Tomcat Service), the exact same System.exec() always returns null.
Basic Python code is here: https://docs.aws.amazon.com/code-samples/latest/catalog/python-transcribe-getting_started.py.html
I thought it might be an authentication problem, but I've authenticated trying the config file in the expected location, Environment Variables, and even System.setProperty() statements. Still always null.
Here's the Java code:
process = Runtime.getRuntime().exec(cmdArray);
reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
The command array has:
python
path to python 'py' file
parameters
The code crashes on the subsequent line (null):
reader.readLine()
I have the Tomcat service set up to use 8MB RAM and have re-installed Tomcat to the latest 9 release.
If I take the individual parameters at the command line and execute them, it's all fine.
Would appreciate any suggestions.
Thanks in advance.
I am working with minko and managed to compile MINKO SDK properly for 3 platforms (Linux, Android, HTML5) and build all tutorials / examples. Moving on to create my own project, I followed the instructions on how to use the existing skeleton project, then using an existing example project.
(I believe there is an error in the skeleton code at this line :
auto sceneManager = SceneManager::create(canvas->context()); //does not compile
where as the example file look like this :
auto sceneManager = SceneManager::create(canvas); //compile and generate binary
I was able to do so by modifying premake5.lua (to include more plugins) and calling script/solution_gmake_gcc.sh
to generate the make solution a week ago. Today, I tried to make a new project in a new folder but calling
script/solution_gmake_gcc.sh and script/clean failed with this error:
minko-master/skel_tut/mycode/premake5.lua:3: attempt to index global 'minko' (a nil value)
Now at premake5.lua line 3 there is this line : minko.project.solution(PROJECT_NAME),
however sine i am not familiar with lua at all, can anyone shed any light on the issue ?
What is supposed to be declared here, why is it failing suddenly... ?
(I can still modify,compile and run the code but i can't for example add more plug-ins)
PS: weirdly enough, the previously 'working' project is also failing at this point.
Thanks.
PROJECT_NAME = path.getname(os.getcwd())
minko.project.application("minko-tutorial-" .. PROJECT_NAME)
files { "src/**.cpp", "src/**.hpp", "asset/**" }
includedirs { "src" }
-- plugins
minko.plugin.enable("sdl")
minko.plugin.enable("assimp")
minko.plugin.enable("jpeg")
minko.plugin.enable("bullet")
minko.plugin.enable("png")
--html overlay
minko.plugin.enable("html-overlay")
Assuming that's indeed your project premake5.lua file (please us the code tags next time), you should have include "script" at the beginning of the file:
https://github.com/aerys/minko/blob/master/skeleton/premake5.lua#L1
If you don't have this line, it will not include script/premake5.lua which is in charge of including the SDK build system files that defines everything inside the minko Lua namespace/table. That's why you get that error.
I think you copy pasted one of the examples/tutorials premake5.lua file instead of modifying the one provided by the skeleton. The premake conf file of the examples/tutorials are different since they are included from the SDK premake files. But your app premake5.lua does the "opposite": it includes the SDK conf files rather than being included by them.
The best practice is to edit your app's copy of the skeleton's premake5.lua (instead of copy/pasting one from the examples/tutorials).
(I believe there is an error in the skeleton code at this line :
That's possible. Our build server doesn't test the skeleton code. That's a mistake we will fix ASAP to make sure it works properly.
script/solution_gmake_gcc.sh and script/clean failed with this error:
minko-master/skel_tut/mycode/premake5.lua:3: attempt to index global 'minko' (a nil value)
Could you copy/paste your premake5.lua file?
Also, what's the value you set for the MINKO_HOME env var? Maybe you've moved the SDK...
Note that instead of setting a global MINKO_HOME env var, you can also set the corresponding LUA constant at the very begining of your premake5.lua file.
When doing
java -cp C:\Tools\Libraries\antlr4-csharp-complete.jar org.antlr.v4.Tool Hello.g4
I get the following files:
HelloBaseListener.cs
Hello.tokens
HelloListener.cs
HelloParser.cs
HelloLexer.tokens
HelloLexer.java
My question is about the last file. Why is it .java instead of .cs?
I'm using antlr4-csharp-4.0.1-SNAPSHOT-complete.jar
Grammar is:
grammar Hello; // Define a grammar called Hello
options
{
language=CSharp_v4_0;
}
r : 'hello' ID ; // match keyword hello followed by an identifier
ID : [a-z]+ ; // match lower-case identifiers
WS : [ \t\r\n]+ -> skip ; // skip spaces, tabs, newlines, \r (Windows)
Hello Sam! I only have visual studio express so I can't install the extension. This is the code that I'm using but it is still generating the HelloLexer.java.
AntlrClassGenerationTaskInternal a = new AntlrClassGenerationTaskInternal();
List<String> files = new List<string>();
files.Add(#"C:\Tools\Grammars\Hello.g4");
a.JavaVendor = "JavaSoft";
a.ToolPath = #"C:\Tools\Libraries\antlr4-csharp-complete.jar";
a.JavaInstallation = "Java Development Kit";
a.SourceCodeFiles = files;
a.OutputPath = #"C:\Tools\Grammars\CSharp\";
a.Execute();
By the way, visual studio complained because it was not able to find Antlr4ClassGenerationTask.IsFatalException(ex)
I appreciate your help on this.
Regards,
Omar.
I think it's a bug, I had got the same problem, but there is a solution.
1) If you want you can remove
options
{
language=CSharp_v4_0;
}
I think is ignored by the code generator
2) create a BAT file with the follow code
#echo OFF
IF "%CLASSPATH%" == "" (SET CLASSPATH=.;.\antlr4-csharp-4.0.1-SNAPSHOT-complete.jar;%CLASSPATH%)
java org.antlr.v4.Tool %* -Dlanguage=CSharp_v4_5
put antlr4-csharp-4.0.1-SNAPSHOT-complete.jar in the same path, now you can use this file to comile. To resolve the issue the magic command line argument is "-Dlanguage=CSharp_v4_5" or the version of C# you are using.
The generated files now have inside the Lexer.cs
Edit 11/20/13: Updated instructions are now available on the project wiki
https://github.com/sharwell/antlr4cs/wiki/Installation
Here are a few messages I sent over the past few months related to this issue. If you don't want to install the Visual Studio extension described below, you'll need to use the source code of Antlr4ClassGenerationTaskInternal.cs to determine a set of command line options that will work.
Also, you can remove the language=CSharp_v4_0; option because it's passed on the command line now.
The C# target wasn't designed for command line usage. You will need to integrate the code generation into your project file according to the instructions on the following page, and the parsers will be generated automatically when you build your project.
https://github.com/sharwell/antlr4cs
You do need to include the .g4 file in your project and configure a few properties of the file. If you install the following extension before adding the grammar to your project, all the other options will be configured for you automatically.
ANTLR Language Support for Visual Studio 2010-
2012
If you already have the .g4 file in your project, and want to still use the extension to automatically configure the proper settings, you can do the following:
Install the extension.
Click the project in Solution Explorer and enable Show All Files (button on the Solution Explorer toolbar). This step greatly simplifies step 4.
Right click the .g4 file in the project, and select Exclude From Project.
Right click the .g4 file again and select Include In Project.
(Optional) You can disable Show All Files when you no longer need it.
I am new to actionscript and jsfl programming. I am using Adobe Flash Professional CS5.5 and windows 7 operating system. I am trying to execute Javascript API commands in my .as file using the MMExecute() function. When publishing the swf file the statements before and after the 'MMExecute' statement are getting executed but the Javascript command string I am using in the MMExecute function doesn't seem to get executed. I am using a basic JSFL command to just trace to the output window in flash. Also, I am publishing the swf file to the WindowsSwf folder present in the Configuration folder. The fla file I have is a blank file with nothing added to it and the code I am using is as follows.
import flash.display.*;
import flash.text.*;
import flash.external.*;
import adobe.utils.MMExecute;
var str:String=new String();
str='fl.trace("Working..");';
MMExecute(str);
Please help me out.
Thanks in advance.
I'm not a real JS programmer, just an artist who got into JSFL, but:
var str:String=new String();
seems odd to me. I don't typically declare var types in JSFL.
(no idea if that's common or I'm just sloppy.)
I would typically just write
var str='fl.trace("Working..");';
it is also possible you may need to escape the first semicolon.