On Tue, Mar 1, 2011 at 6:05 PM, Frederik Ramm <[email protected]> wrote:
>
> Eric Wolf wrote:
>>
>> I'm going to have to look into another solution.
>
> Usual advice is to bzcat and then read from stdin; you could proably even do
> that with a popen() from python if need be (but that comes from a
> non-pythoneer).
Here's a snippet from one of my scripts:
source = file(planet_file_name, 'rb')
target = file(target_file_name, 'wb')
p1 = subprocess.Popen(['bzip2', '--decompress'],
stdin = source,
stdout = subprocess.PIPE)
p2 = subprocess.Popen([os.path.expanduser('~/osmosis-0.38/bin/osmosis'),
'-verbose',
'--read-xml', 'file=/dev/stdin', 'enableDateParsing=no',
'--bounding-box', 'top=50', 'bottom=23',
'right=-66', 'left=-125', 'idTrackerType=BitSet', 'completeWays=yes',
'completeRelations=yes',
'--write-pbf', 'file=/dev/stdout'],
stdin = p1.stdout,
stdout = subprocess.PIPE)
p3 = subprocess.Popen(['bzip2', '--compress'],
stdin = p2.stdout,
stdout = target)
pids = set([p1.pid, p2.pid, p3.pid])
while pids:
pid, status = os.wait()
print pid, status
pids.remove(pid)
if not os.WIFEXITED(status) or os.WEXITSTATUS(status) != 0:
for pid in pids:
try:
os.kill(pid, signal.SIGTERM)
except OSError, e:
print e
--
Jeff Ollie
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