1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
##
# Example : open/read/close a file with gfal 2.0
#
import sys
import os
import gfal2
from string import printable
## main func
if __name__ == '__main__':
# comment for usage
if(len(sys.argv) < 2):
print("\nUsage\t %s [gfal_url] \n"%(sys.argv[0]))
print(" Example: %s lfn:/grid/dteam/myfile "%(sys.argv[0]))
print(" %s srm://myserver.com/myhome/myfile \n"%(sys.argv[0]))
os._exit(1)
ctx = gfal2.creat_context()
# open the file
f = ctx.open(sys.argv[1], 'r')
# read first 10 bytesthe max_size first bytes.
content = f.read(10)
# Hex dump
str = []
for byte in content:
print("%2X " % ord(byte)),
if byte in printable:
str.append(byte)
else:
str.append('.')
print('\t', ' '.join(str))
# no close needed, done automatically with the destruction of the file handle
|
