[Tutor] modified readline()???
Hugo González Monteverde
hugonz-lists at h-lab.net
Tue Oct 19 07:51:51 CEST 2004
I'm invoking cdrecord from my python program, and I want to parse its
progress so as to paint a progress bar.
Now, I'd be doing:
filep = popen ("/mypath/cdrecord yabba yabba yabba")
then read from filep in a loop
If cdrecord sent the percentages in canonical form (ie, with \n between
the lines) I could just do
can_line = filep.readline()
#here I'd look for the XX% string in the output, regexp or something
if percentage == "100%":
But the program just puts some kind of terminal control between status
lines. Can I redefine the "CR" in readline() as to read up to that
character??? I cannot simply use read() and block with some buffer size
since that does not guarante I'm getting the whole "50%" string so that
I can parse it.... I could be getting just 5 in one pass, and then 0%
in the next....
Thanks all for your kind insight.... =)
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