/usr/share/pyshared/Photon/PxM.py is in photon 0.4.6-3.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# PxM
# Detects:
# PPM (P6)
# TODO: all others format :)
#
import re
def identify_P6(h):
if h[0] == '#':
raise Exception("I don't support comments in a PPM file")
m = re.search("^(\d+)\s(\d+)", h)
if not m:
return (None, None)
# The third line can be skipped
return ('PPM',((int(m.group(1)), int(m.group(2)))))
def identify(filename):
h = None
f = open(filename,'rb')
if not f:
return (None, None)
h = f.read(1024)
f.close()
# PPM has an ASCII header on the first line
if h[0:3] == 'P6\n':
return identify_P6(h[3:])
return (None, None)
if __name__ == "__main__":
# import profile
# profile.run('main()')
import sys
import PxM
if len(sys.argv) < 2:
print 'Usage: %s files...\n' % sys.argv[0]
sys.exit(0)
for filename in sys.argv[1:]:
(format, info)=PxM.identify(filename)
if info != None:
print "%s (format=%s; size = %d,%d)" % (filename,format, info[0],info[1])
else:
print "%s is not a PPM,PGM,PBM file" % filename
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