#!/usr/bin/env python
import json
import subprocess
from optparse import OptionParser
from ListFile import ListFile
# help info
helptext = "this program is to searh the large file of dir"
sversion = "v1.0"
usage = ("%prog [OPTION]... [DIR]" + '\n' + helptext)
parser = OptionParser(usage, version='%prog ' + sversion)
parser.add_option("-d", "--dir", type="string", action="store", dest="dir", default="/", help="choose dir defaul:t is /")
parser.add_option("-n", "--num", type="int", action="store", dest="num", default=5, help='choose the num of largest file defalt is 5, if the file num of dir is less the num, return real num of file');
(options,largs) = parser.parse_args();
if __name__ == "__main__":
try:
out_bytes = subprocess.check_output(['ncdu', '-o', '-', options.dir])
except subprocess.CalledProcessError as e:
out_bytes = e.output
code = e.returncode
print('excute \"ncdu -x - %s\" fail' % options.dir)
print(out_bytes)
sys.exit(code)
handle = ListFile(json.loads(out_bytes))
handle.getlargefile(options.num)
