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Re: [xsl] Calling Java Xalan inside Perl on Unix
Subject: Re: [xsl] Calling Java Xalan inside Perl on Unix From: David McKain <dmckain1@xxxxxxxxxxx> Date: Thu, 17 Apr 2003 16:42:13 +0100 |
On Thu, Apr 17, 2003 at 10:07:42AM -0400, Gan Uesli Starling wrote: > > Anybody know how to call Xalan from a Perl script on > NetBSD Unix? I can't seem to get it right. I try like > so in my Perl script... > Hi Gan, > @xsl = ("java", "org.apache.xalan.xslt.Process -in > $file_name.xml -xsl pdfmarks.xsl -out pdfmarks.txt"); > system(@xsl); Your problem is shell escaping. The list @xsl you pass to system() has 2 arguments so is equivalent to typing: java "org.apache.xalan.xslt.Process -in blah.xml blah..." at the shell (I've omitted the last part of the command to make it fit on one line!) Everything inside the double quotes is treated as ONE argument by the shell, so what this does is ask Java to find and run the class called org.apache.xalan.xslt.Process -in blah.xml blah... This class name includes the space and the '-in' stuff and almost certainly doesn't exist, hence the error. To fix, do: my @xsl = ("java", "org.apache.xalan.xslt.Process", "-in", "$filename.xml", ...); system(@xsl); Each member of the list @xsl represents a separate command line argument, which is what you want here. This particular example can also be written in a less noisy but entirely equivalent way using Perl's "quote words" qw(...) quoting as: my @xsl = qw(java org.apache.xalan.xslt.Process -in $filename.xml ...) Alternatively, use the less safe 'system COMMAND' method: system("java org.apache.xalan.xslt.Process -in ..."); though do bear in mind that you must be *very* careful about using this last method if any of the strings being interpolated into the system command are not hardcoded into your program, as otherwise you may end up executing java org.apache.xalan.xslt.Process ; rm -rf / which probably doesn't do what you want! For more info, perldoc -f system You might also want to try looking at either XML::LibXSLT or Sablotron for XSLT processing in Perl; calling java in this way is not terribly efficient. Cheers, David. XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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