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Source code for galaxy.datatypes.util.generic_util
import subprocess
[docs]def count_special_lines(word, filename, invert=False):
"""
searching for special 'words' using the grep tool
grep is used to speed up the searching and counting
The number of hits is returned.
"""
try:
cmd = ["grep", "-c", "-E"]
if invert:
cmd.append('-v')
cmd.extend([word, filename])
out = subprocess.Popen(cmd, stdout=subprocess.PIPE)
return int(out.communicate()[0].split()[0])
except Exception:
pass
return 0