When I try to compile the below Latex document from Java, my pdflatex run crashes:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{arrows}
\begin{document}
\pagestyle{empty}
%
\tikzstyle{int}=[draw, fill=blue!20, minimum size=2em]
\tikzstyle{init} = [pin edge={to-,thin,black}]
\begin{tikzpicture}[node distance=2.5cm,auto,>=latex']
\node [int, pin={[init]above:$v_0$}] (a) {$\frac{1}{s}$};
\node (b) [left of=a,node distance=2cm, coordinate] {a};
\node [int, pin={[init]above:$p_0$}] (c) [right of=a] {$\frac{1}{s}$};
\node [coordinate] (end) [right of=c, node distance=2cm]{};
\path[->] (b) edge node {$a$} (a);
\path[->] (a) edge node {$v$} (c);
\draw[->] (c) edge node {$p$} (end) ;
\end{tikzpicture}
\end{document}
pdflatex doesn't just produce some error, but it simply freezes. The log file is cut off in the middle, even before an enclosing quotation mark is completed (but always at the same position, I think).
I use this Java command to execute pdflatex:
Runtime.getRuntime().exec(command);
p.waitFor();
The command executed is:
"C:\Program Files\MiKTeX 2.9\miktex\bin\x64\pdflatex.exe" -output-directory "C:\Eig\Lehre\Info2\ImagesTemp" "C:\Eig\Lehre\Info2\ImagesTemp\graph.tex"
Executing the command by hand in a command line works fine! Also, the Java execution works fine when I don't include tikz in the latex document. This seems quite strange to me - is there some bug or am I missing something?
I'm using Miktex 2.9 and Java 8 on Windows, I've tried it on different Windows versions.
This problem is probably caused by not capturing the output of the process. You need to read every byte written to standard out and standard error by the child process else the system buffer will fill up and the process will block when it next attempts to write something.
Here's a related question: Capturing stdout when calling Runtime.exec
Which points to http://www.javaworld.com/article/2071275/core-java/when-runtime-exec---won-t.html for more information.
Related
I am testing to see if ANTLR-4.7.1 is working properly by using a sample, provided by my professor, to match these results for the same printed set of tokens:
% java -jar ./antlr-4.7.1-complete.jar HelloExample.g4
% javac -cp antlr-4.7.1-complete.jar HelloExample*.java
% java -cp .:antlr-4.7.1-complete.jar org.antlr.v4.gui.TestRig HelloExample greeting helloworld.greeting -tokens
[#0,0:4='Hello',<1>,1:0]
[#1,6:10='World',<3>,1:6]
[#2,12:12='!',<2>,1:12]
[#3,14:13='<EOF>',<-1>,2:0]
(greeting Hello World !)
However, after getting to the 3rd command, my output was instead:
[#0,0:4='Hello',<'Hello'>,1:0]
[#1,6:10='World',<Name>,1:6]
[#2,12:12='!',<'!'>,1:12]
[#3,13:12='<EOF>',<EOF>,1:13]
In my output, there are no numbers inside < >, which I believe should be defined from the HelloExample.tokens file that contain:
Hello=1
Bang=2
Name=3
WS=4
'Hello'=1
'!'=2
I get no error information and antlr seemed to have generated all the files I needed, so I don't know where I should be looking to resolve this, please help. And I'm not sure if it'll be of use, but my working directory started with helloworld.greeting and HelloExample.g4 and final directory now contains
helloworld.greeting
HelloExample.g4
HelloExample.interp
HelloExample.tokens
HelloExampleBaseListener.class
HelloExampleBaseListener.java
HelloExampleLexer.class
HelloExampleLexer.inerp
HelloExampleLexer.java
HelloExampleLexer.tokens
HelloExampleListener.class
HelloExampleListener.java
HelloExampleParser$GreetingContext.class
HelloExampleParser.class
HelloExampleParser.java
As rici already pointed out in the comments, getting the actual rule names instead of their numbers in the token output is a feature and shouldn't worry you.
In order to get the (greeting Hello World !) output at the end, you'll want to add the -tree flag after -tokens.
What am I doing?
I am writing a data analysis program in Java which relies on R´s arulesViz library to mine association rules.
What do I want?
My purpose is to store the rules in a String variable in Java so that I can process them later.
How does it work?
The code works using a combination of String.format and eval Java and RJava instructions respectively, being its behavior summarized as:
Given properly formatted Java data structures, creates a data frame in R.
Formats the recently created data frame into a transaction list using the arules library.
Runs the apriori algorithm with the transaction list and some necessary values passed as parameter.
Reorders the generated association rules.
Given that the association rules cannot be printed, they are written to the standard output with R´s write method, capture the output and store it in a variable. We have converted the association rules into a string variable.
We return the string.
The code is the following:
// Step 1
Rutils.rengine.eval("dataFrame <- data.frame(as.factor(c(\"Red\", \"Blue\", \"Yellow\", \"Blue\", \"Yellow\")), as.factor(c(\"Big\", \"Small\", \"Small\", \"Big\", \"Tiny\")), as.factor(c(\"Heavy\", \"Light\", \"Light\", \"Heavy\", \"Heavy\")))");
//Step 2
Rutils.rengine.eval("transList <- as(dataFrame, 'transactions')");
//Step 3
Rutils.rengine.eval(String.format("info <- apriori(transList, parameter = list(supp = %f, conf = %f, maxlen = 2))", supportThreshold, confidenceThreshold));
// Step 4
Rutils.rengine.eval("orderedRules <- sort(info, by = c('count', 'lift'), order = FALSE)");
// Step 5
REXP res = Rutils.rengine.eval("rulesAsString <- paste(capture.output(write(orderedRules, file = stdout(), sep = ',', quote = TRUE, row.names = FALSE, col.names = FALSE)), collapse='\n')");
// Step 6
return res.asString().replaceAll("'", "");
What´s wrong?
Running the code in Linux Will work perfectly, but when I try to run it in Windows, I get the following error referring to the return line:
Exception in thread "main" java.lang.NullPointerException
This is a common error I have whenever the R code generates a null result and passes it to Java. There´s no way to syntax check the R code inside Java, so whenever it´s wrong, this error message appears.
However, when I run the R code in brackets in the R command line in Windows, it works flawlessly, so both the syntax and the data flow are OK.
Technical information
In Linux, I am using R with OpenJDK 10.
In Windows, I am currently using Oracle´s latest JDK release, but trying to run the program with OpenJDK 12 for Windows does not solve anything.
Everything is 64 bits.
The IDE used in both operating systems is IntelliJ IDEA 2019.
Screenshots
Linux run configuration:
Windows run configuration:
I am trying to read events from the event log of two windows machines. One is Windows 10 Enterprise (works perfectly) and one is Small Business Server 2008. On the SBS2008 machine output is truncated at the 78th character but I can’t see why.
This is the powershell command that I am running:
get-eventlog Application -After (Get-Date).AddDays(-10) |
Where-Object {$_.EntryType -like 'Error' -or $_.EntryType -like
'Information'} | Format-Table -Property TimeGenerated, Index,
EventID, EntryType, Source, Message -autosize | Out-String -Width 4000
It performs fine in a powershell edit window on both machines, no truncation.
If I run it in a command window using powershell -file GetEvents.ps1 the output is truncated:
C:\BITS>powershell -file GetEvents.ps1
I cannot work out what is doing this. This is the Java code:
String command = "powershell.exe " + Cmd;
Process powerShellProcess = Runtime.getRuntime().exec(command);
powerShellProcess.getOutputStream().close();
String line;
BufferedReader stdout = new BufferedReader(new InputStreamReader(powerShellProcess.getInputStream()));
while ((line = stdout.readLine()) != null) {
if (line.length() > 0) {
System.out.println(line);
}
}
Can anyone suggest a better way to get the events out of the log or suggest how I read the output from the powershell script without it being broken up by carriage returns? This was quite disappointing as I had tested it extensively on my machine (the W10 one) only to find it fails on the SBS2008 customer machine!
I have checked the libraries and java versions used on the different machines and they are the same. It’s not the println statement because I do some parsing of the string within the final ‘While’ block and the incoming line is definitely truncated.
I have subsequently tried using Get-winevent but when I put a filterhashtable flag on the command it fails when run on SBS2008 saying 'the parameter is incorrect' (works fine on W10).
My ideal would be able to get all the events from a specific logfile since a given eventID (because I can store that) but it seems to be virtually impossible to get the same output across all windows operating systems in the same format. Any suggestions welcome.
The answer for SBS2008 is here; http://www.mcbsys.com/blog/2011/04/powershell-get-winevent-vs-get-eventlog/
SBS2008 cannot use a hashtable, must use filterxml. Unfortunately when I use filterxml on SBS2008 it does not return the error message, everything else, just no the message. This is using the prescribed method of cutting and pasting the XML query from Event Viewer (https://blogs.msdn.microsoft.com/powershell/2011/04/14/using-get-winevent-filterxml-to-process-windows-events/).
After more research I have come up with a script which does (sort of) what I want. It lacks the eventindex (which is a shame) but it consistently returns the events from the System & Application eventlogs:
$fx = '<QueryList>
<Query Id="0" Path="Application">
<Select Path="Application">*[System[(Level=1 or Level=2 or Level=3) and TimeCreated[timediff(#SystemTime) <= 43200000]]]</Select>
</Query>
</QueryList>'
function Set-Culture([System.Globalization.CultureInfo] $culture) { [System.Threading.Thread]::CurrentThread.CurrentUICulture = $culture ; [System.Threading.Thread]::CurrentThread.CurrentCulture = $culture } ; Set-Culture en-US ; get-winevent -FilterXml $fx | out-string -width 470
$fx = '<QueryList>
<Query Id="0" Path="System">
<Select Path="System">*[System[(Level=1 or Level=2 or Level=3) and TimeCreated[timediff(#SystemTime) <= 43200000]]]</Select>
</Query>
</QueryList>'
Set-Culture en-US ; get-winevent -FilterXml $fx | out-string -width 470
I hope that this is useful to someone else!
With reference to my previous question,
Executing a lisp function from Java
I was able to call lisp code from Java using ABCL.
But the problem is, the already existing lisp code uses CL-PPCRE package.
I can not compile the code as it says 'CL-PPCRE not found'.
I have tried different approaches to add that package,
including
1) how does one compile a clisp program which uses cl-ppcre?
2)https://groups.google.com/forum/#!topic/cl-ppcre/juSfOhEDa1k
Doesnot work!
Other thing is, that executing (compile-file aima.asd) works perfectly fine although it does also require cl-pprce
(defpackage #:aima-asd
(:use :cl :asdf))
(in-package :aima-asd)
(defsystem aima
:name "aima"
:version "0.1"
:components ((:file "defpackage")
(:file "main" :depends-on ("defpackage")))
:depends-on (:cl-ppcre))
The final java code is
interpreter.eval("(load \"aima/asdf.lisp\")");
interpreter.eval("(compile-file \"aima/aima.asd\")");
interpreter.eval("(compile-file \"aima/defpackage.lisp\")");
interpreter.eval("(in-package :aima)");
interpreter.eval("(load \"aima/aima.lisp\")");
interpreter.eval("(aima-load 'all)");
The error message is
Error loading C:/Users/Administrator.NUIG-1Z7HN12/workspace/aima/probability/domains/edit-nets.lisp at line 376 (offset 16389)
#<THREAD "main" {3A188AF2}>: Debugger invoked on condition of type READER-ERROR
The package "CL-PPCRE" can't be found.
[1] AIMA(1):
Can anyone help me?
You need to load cl-ppcre before you can use it. You can do that by using (asdf:load-system :aima), provided that you put both aima and cl-ppcre into locations that your ASDF searches.
I used QuickLisp to add cl-ppcre (because nothing else worked for me).
Here is what I did
(load \"~/QuickLisp.lisp\")")
(quicklisp-quickstart:install)
(load "~/quicklisp/setup.lisp")
(ql:quickload :cl-ppcre)
First 2 lines are only a one time things. Once quickLisp is installed you can start from line 3.
I've seen other posts about this but I still couldn't get it to work.
http://snowball.tartarus.org/dist/libstemmer_java.tgz <<- this contains the java implementation of the porter2 algorithm.
What I did was extract the contents on my desktop (for easy access) and opened its .java file using Netbeans IDE. I ran it but it returned an error.
Netbeans doesn't read the other java files. Since all the java files are connected to each other, one error from javaX file produces error on javaY file and so on.
TestApp.java is the one which should be ran. But the following errors occur. See the screenshots.
Here are the screenshots:
http://img248.imageshack.us/img248/290/java1.jpg
http://img4.imageshack.us/img4/5196/java2l.jpg
http://img441.imageshack.us/img441/8625/java3i.jpg
I cannot see your images any longer. The ext folder will not compile because of 3 unreachable statements in frenchStemmer.java. They can easily be removed, or just delete the entire file if you are not using french.
case 13:
// (, line 155
// call RV, line 155
if (!r_RV())
{
return false;
}
// fail, line 155
// (, line 155
// <-, line 155
slice_from("ant");
return false;
break; <<<- remove this
I compiled and ran in the free Community Edition of Intellij, and also using the command line.