jruby error on init; error on IO.popen(); fails when cmd is string, works when cmd is array

[bwalsh]

note brackets around cmd []
cmd is a string or an array as follows.

      @engine = IO.popen([cmd],"w+")

environment

java -version
java version "1.7.0_09"
Java(TM) SE Runtime Environment (build 1.7.0_09-b05)
Java HotSpot(TM) 64-Bit Server VM (build 23.5-b02, mixed mode)

jruby -v
jruby 1.7.2 (1.9.3p327) 2013-01-04 302c706 on Java HotSpot(TM) 64-Bit Server VM 1.7.0_09-b05 [Windows 7-amd64]

trace

I've added a few puts() statements to trace ...

  puts "R cmd #{cmd}"
     begin
       @engine = IO.popen(cmd,"w+")
     rescue Exception => e  
        puts "e.message=#{e.message}"
        puts e.backtrace
        puts e.inspect  
        raise e.message
     end  
  puts "R @engine #{@engine}"

with the brackets ...

jruby -S irb
irb(main):001:0> require "rinruby"
R start
R require java
R platform windows-java
R executable "C:/Program Files/R/R-2.15.2/bin/i386/Rterm.exe"
R loaded readline
R cmd "C:/Program Files/R/R-2.15.2/bin/i386/Rterm.exe" --ess --slave
R @engine #IO:0x51a4f310

without the brackets ...

jruby -S irb
irb(main):001:0> require "rinruby"
R start
R require java
R platform windows-java
R executable "C:/Program Files/R/R-2.15.2/bin/i386/Rterm.exe"
R loaded readline
R cmd "C:/Program Files/R/R-2.15.2/bin/i386/Rterm.exe" --ess --slave
e.message=
java.lang.ProcessImpl.(ProcessImpl.java:181)
java.lang.ProcessImpl.start(ProcessImpl.java:133)
java.lang.ProcessBuilder.start(ProcessBuilder.java:1021)
jnr.posix.util.Java5ProcessMaker.start(Java5ProcessMaker.java:139)
org.jruby.util.ShellLauncher.buildProcess(ShellLauncher.java:492)
org.jruby.util.ShellLauncher.popenShared(ShellLauncher.java:734)
org.jruby.util.ShellLauncher.popen(ShellLauncher.java:693)
org.jruby.RubyIO.popen19(RubyIO.java:3931)
org.jruby.RubyIO$INVOKER$s$0$2$popen19.call(RubyIO$INVOKER$s$0$2$popen19.gen)
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:216)
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:212)
org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:346)
org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:204)
c_3a_.Users.bwalsh.jruby_minus_1_dot_7_dot_2.lib.ruby.gems.shared.gems.rinruby_minus_2_dot_0_dot_3.lib.rinruby.chained_6_rescue_4$RUBY$SYNTHETICinitialize(c:/Users/bwalsh/jruby-1.7.2/lib/ruby/gems/shared/gems/rinruby-2.0.3/lib/rinruby.rb:173)

[clbustos]

Ok, I will check it.

[bwalsh]

Much appreciated. Thanks so much for the quick response!
-b

-Brian Walsh

On Sat, Feb 23, 2013 at 6:45 PM, Claudio Bustos notifications@github.comwrote:

Ok, I will check it.

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