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Cannot start jruby-complete.jar on Windows from UNC path #3661

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rsim opened this issue Feb 12, 2016 · 2 comments
Open

Cannot start jruby-complete.jar on Windows from UNC path #3661

rsim opened this issue Feb 12, 2016 · 2 comments

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@rsim
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rsim commented Feb 12, 2016

It seems that require still does not fully support UNC paths on Winows. I identified different strange problems when starting java -jar with jruby-complete.jar from Windows UNC path (\\server\share\directory). Here is a simple example how to reproduce it with irb:

C:\>java -jar \\server\share\directory\jruby-complete-1.7.24.jar -S irb
LoadError: No such file to load -- irb/error.rb
        load at file://server/share/directory/jruby-complete-1.7.24.jar!/META-INF/jruby.home/lib/ruby/1.9/irb/locale.rb:112
  init_error at file://server/share/directory/jruby-complete-1.7.24.jar!/META-INF/jruby.home/lib/ruby/1.9/irb/init.rb:122
       setup at file://server/share/directory/jruby-complete-1.7.24.jar!/META-INF/jruby.home/lib/ruby/1.9/irb/init.rb:17
       start at file://server/share/directory/jruby-complete-1.7.24.jar!/META-INF/jruby.home/lib/ruby/1.9/irb.rb:53
      (root) at //server/share/directory/jruby-complete-1.7.24.jar!/META-INF/jruby.home/bin/jirb:13

Another strange psych require problem:

C:\>java -jar \\server\share\directory\jruby-complete-1.7.24.jar -e "require 'psych';p $LOADED_FEATURES.grep(/psych/)"
["jar:file://server/share/directory/jruby-complete-1.7.24.jar!/META-INF/jruby.home/lib/ruby/1.9/psych/exception.rb", "jar:file://server/share/directory/jruby-
complete-1.7.24.jar!/META-INF/jruby.home/lib/ruby/1.9/psych/syntax_error.rb", "psych.jar"]

It is not clear why psych.jar appears in the loaded features as there is not such jar file in jruby-complete.jar. If jruby-complete.jar is located in a normal Windows drive directory then there is no such psych.jar in the loaded features (and there is a long list of psych .rb files).

I suspect that one of the causes could be that $LOAD_PATH is not populated correctly:

C:\>java -jar \\server\share\directory\jruby-complete-1.7.24.jar -e "p $:"
["file:/server/share/directory/jruby-complete-1.7.24.jar!/META-INF/jruby.home/lib/ruby/1.9/site_ruby", "file:/server/share/directory/jruby-complete-1.7.24.jar
!/META-INF/jruby.home/lib/ruby/shared", "file:/server/share/directory/jruby-complete-1.7.24.jar!/META-INF/jruby.home/lib/ruby/1.9"]

In case of UNC path I think the correct prefix should be file://server/share/... and not file:/server/share/....

Are there any workaround how to run java command line with jruby-complete.jar from a Windows UNC path?
@rsim
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rsim commented Feb 12, 2016

@enebo Could you please have a look on this? This is still one problem with UNC path support on Windows.

@rsim
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rsim commented Feb 13, 2016

Found a workaround that I can use -Djruby.home=uri:classloader://META-INF/jruby.home in java command line and then $LOAD_PATH is populated with this JRUBY_HOME prefix and require works correctly.

@rsim rsim mentioned this issue Feb 14, 2016
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