STDIN Conflict #26
Description
Here is an example of my code that created a visual error, and the display to look funny. The progress bar still worked, and there is a work-around to stop the bug, but I thought I would mention it so that you can fix when you have the time...
q = Queue.new
ARGF.each_line do |line|
(var1, var2) = line.split(",").map(&:chomp)
q.push(MyClass.new(var1, var2)
end
bar = ProgressBar(q.size)
while not(q.empty?)
... do something
end
As you can see, I am reading a file from the command line, line by line, parsing it, and adding it to a queue. I am then using the ProgressBar to display processing of the data read. Now, ARGF allows me to provide files at the command line, or to pipe it to stdin. When I call my code as such:
$ cat datafile | myprogram.rb
It will display like so:
[root@dencts02 router-testing]# cat out.txt | ./check_routers
stty: standard input: Invalid argument
stty: standard input: Invalid argument 1/12] [ 8.33%] [00:21] [03:58] [ 0.05/s]
stty: standard input: Invalid argument 2/12] [ 16.67%] [00:43] [03:37] [ 0.05/s]
stty: standard input: Invalid argument 3/12] [ 25.00%] [01:32] [04:38] [ 0.03/s]
stty: standard input: Invalid argument 4/12] [ 33.33%] [01:54] [03:48] [ 0.03/s]
stty: standard input: Invalid argument 5/12] [ 41.67%] [02:16] [03:10] [ 0.04/s]
stty: standard input: Invalid argument 6/12] [ 50.00%] [03:17] [03:17] [ 0.03/s]
stty: standard input: Invalid argument 7/12] [ 58.33%] [03:39] [02:36] [ 0.03/s]
stty: standard input: Invalid argument 8/12] [ 66.67%] [04:36] [02:18] [ 0.03/s]
stty: standard input: Invalid argument 9/12] [ 75.00%] [04:58] [01:39] [ 0.03/s]
stty: standard input: Invalid argument11/12] [ 91.67%] [05:04] [00:27] [ 0.04/s]
[##################################] [12/12] [100.00%] [05:28] [00:00] [ 0.04/s]
but if I call my program with a filename... then there is no problem:
$ myprogram.rb datafile
[#############################################] [12/12] [100.00%] [06:07] [00:00] [ 0.03/s]
It appears to get its knickers in a bunch if you are streaming in from STDIN.
Nice Gem, small minor non-critical bug