Hi all ,
I am using Dir.chdir to change my current working directory.
class Test
def initialize
spin
end
def spin
dire = “/c/Target/tioga-1.11/samples”
dire2 = “c:\Target\tioga-1.11\samples”
Dir.chdir(dire2)
#system(“cd”, dire)
end
end
My original project inundates with errors
“The System cannot find the path specified”
& this test program says no such file or directory.
Even on MSYS Dir.chdir(dire) does not work !
There are other Dir routines like Dir.each() which gives the error
undefined method `each' for nil:NilClass [version: 1.11]
Can you please help me correct these errors.
Hi,
Try using double backslashes: “c:\Target\tioga-1.11\samples”
Cheers,
Looks like you’re using cygwin paths for a non-cygwin version of Ruby.
Mismatch those is not good, and that would be the reason you can chdir
properly.
First check your ruby version (ruby -v) if it says “mswin32” or
“mingw32”, you should use drive letters.
frmsrcurl:
http://compgroups.net/comp.lang.ruby/Dir.chdir-does-not-work-on-windows-xp
Thank you for your replies.
Yes the Ruby version says i386-mswin32
and when I used “c:\Target\tioga-1.11\samples” I could chdir.
I need to execute another program and parse the output. So I used
IO.popen
http://ruby-doc.org/core/classes/IO.html
pdflatex = "pdflatex"
@save_dir = "figures_out"
name = "red"
syscmd = "cd #{@save_dir} & #{pdflatex} -interaction=nonstopmode
#{name}.tex"
puts syscmd
IO::popen(syscmd, “r+”)
puts $?
It does not work. pdflatex complains Invalid Argument. However when I
replace
IO::popen(syscmd, “r+”) with system(syscmd) it does work but I cannot
read the output back.
Can you please tell me why does this happen OR a workaround to achieve
my goal.
====================================================
Here is the actual code
@measures = {}
IO::popen(syscmd, "r+") do |f|
#puts $?
f.close_write # We don't need that.
log = File.open(logname, "w")
for line in f
log.print line
if line =~ /^(.*)\[(\d)\]=(.+pt)/
n = $1
num = $2.to_i
dim = Utils::tex_dimension_to_bp($3)
@measures[n] ||= []
@measures[n][num] = dim
end
end
end