I really hate to post this, I had a task to accomplish where there already existed a vbscript. At first I tried to rewrite the vbscript into ruby. But I ran into limitations with the Ruby .Net Bridge. I also tried IronRuby but it is still alpha (as of July 1, 2008). I could have done the task in C# but I didn't want to build a .Net object just to perform a simple task. What I had working well is a vbscript file. So my answer was to call cscript from rake. While I'd rather avoid this, it is a simple solution that gets the job done.
So in my rakefile I can write
task :foobar do
cscript "foobar.vbs"
end
Here is the source for the rake cscript task...
require 'win32/open3'
# runs a cscript script for example:
#
# cscript "myscript.vbs arg1 arg2 /namedarg:value"
#
# if no block is given, it will output the stdout from the script and
# raise anything received on stderr.
#
# if a block is provided, the resulting output and error (nil if no error) is
# passed to the block.
#
# cscript "myscript.vbs arg1 arg2 /namedarg:value" do |out, error|
# puts "out = #{out.inspect}"
# puts "error = #{error.inspect}"
# if error
# raise error
# end
# end
def cscript( file_and_arguments )
cmd = "cscript /Nologo #{file_and_arguments}"
puts cmd
Open3.popen3(cmd) do | io_in, io_out, io_err |
result = io_out.readlines.join
error = io_err.readlines
if block_given?
yield result, (error.size==0) ? nil : error.join
else
puts result
raise error.join if error.size != 0
end
end
end
