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cdsc_reddit/helper.py

52 lines
1.6 KiB
Python

from subprocess import Popen, PIPE
import re
from collections import defaultdict
from os import path
import glob
def find_dumps(dumpdir, base_pattern):
files = glob.glob(path.join(dumpdir,base_pattern))
# build a dictionary of possible extensions for each dump
dumpext = defaultdict(list)
for fpath in files:
fname, ext = path.splitext(fpath)
dumpext[fname].append(ext)
ext_priority = ['.zst','.xz','.bz2','.gz']
for base, exts in dumpext.items():
ext = [ext for ext in ext_priority if ext in exts][0]
yield base + ext
def open_fileset(files):
for fh in files:
print(fh)
lines = open_input_file(fh)
for line in lines:
yield line
def open_input_file(input_filename):
if re.match(r'.*\.7z$', input_filename):
cmd = ["7za", "x", "-so", input_filename, '*']
elif re.match(r'.*\.gz$', input_filename):
cmd = ["zcat", input_filename]
elif re.match(r'.*\.bz2$', input_filename):
cmd = ["bzcat", "-dk", input_filename]
elif re.match(r'.*\.bz', input_filename):
cmd = ["bzcat", "-dk", input_filename]
elif re.match(r'.*\.xz', input_filename):
cmd = ["xzcat",'-dk', '-T 20',input_filename]
elif re.match(r'.*\.zst',input_filename):
cmd = ['zstd','-dck', input_filename]
elif re.match(r'.*\.gz',input_filename):
cmd = ['gzip','-dc', input_filename]
try:
input_file = Popen(cmd, stdout=PIPE).stdout
except NameError as e:
print(e)
input_file = open(input_filename, 'r')
return input_file