45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
|
# Copyright (c) 2009 The Chromium Embedded Framework Authors. All rights
|
||
|
|
# reserved. Use of this source code is governed by a BSD-style license that
|
||
|
|
# can be found in the LICENSE file.
|
||
|
|
|
||
|
|
import os
|
||
|
|
import shutil
|
||
|
|
import sys
|
||
|
|
import time
|
||
|
|
|
||
|
|
def read_file(name, normalize = True):
|
||
|
|
""" Function for reading a file. """
|
||
|
|
try:
|
||
|
|
f = open(name, 'r')
|
||
|
|
# read the data
|
||
|
|
data = f.read()
|
||
|
|
if normalize:
|
||
|
|
# normalize line endings
|
||
|
|
data = data.replace("\r\n", "\n")
|
||
|
|
return data
|
||
|
|
except IOError, (errno, strerror):
|
||
|
|
sys.stderr.write('Failed to read file '+filename+': '+strerror)
|
||
|
|
raise
|
||
|
|
else:
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
def write_file(name, data):
|
||
|
|
""" Function for writing a file. """
|
||
|
|
try:
|
||
|
|
f = open(name, 'w')
|
||
|
|
# write the data
|
||
|
|
f.write(data)
|
||
|
|
except IOError, (errno, strerror):
|
||
|
|
sys.stderr.write('Failed to write file '+name+': '+strerror)
|
||
|
|
raise
|
||
|
|
else:
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
def file_exists(name):
|
||
|
|
""" Returns true if the file currently exists. """
|
||
|
|
return os.path.exists(name)
|
||
|
|
|
||
|
|
def backup_file(name):
|
||
|
|
""" Renames the file to a name that includes the current time stamp. """
|
||
|
|
shutil.move(name, name+'.'+time.strftime('%Y-%m-%d-%H-%M-%S'))
|