cpython/Tools/scripts/fixnotice.py at master · python-emscripten/cpython · GitHub

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#! /usr/bin/env python3

"""(Ostensibly) fix copyright notices in files.

Actually, this script will simply replace a block of text in a file from one

string to another. It will only do this once though, i.e. not globally

throughout the file. It writes a backup file and then does an os.rename()

dance for atomicity.

Usage: fixnotices.py [options] [filenames]

Options:

-h / --help

Print this message and exit

--oldnotice=file

Use the notice in the file as the old (to be replaced) string, instead

of the hard coded value in the script.

--newnotice=file

Use the notice in the file as the new (replacement) string, instead of

the hard coded value in the script.

--dry-run

Don't actually make the changes, but print out the list of files that

would change. When used with -v, a status will be printed for every

file.

-v / --verbose

Print a message for every file looked at, indicating whether the file

is changed or not.

"""

OLD_NOTICE = """/***********************************************************

See the file "Misc/COPYRIGHT" for information on usage and

redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.

******************************************************************/

"""

import os

import sys

import getopt

NEW_NOTICE = ""

DRYRUN = 0

VERBOSE = 0

def usage(code, msg=''):

print(__doc__ % globals())

if msg:

print(msg)

sys.exit(code)

def main():

global DRYRUN, OLD_NOTICE, NEW_NOTICE, VERBOSE

try:

opts, args = getopt.getopt(sys.argv[1:], 'hv',

['help', 'oldnotice=', 'newnotice=',

'dry-run', 'verbose'])

except getopt.error as msg:

usage(1, msg)

for opt, arg in opts:

if opt in ('-h', '--help'):

usage(0)

elif opt in ('-v', '--verbose'):

VERBOSE = 1

elif opt == '--dry-run':

DRYRUN = 1

elif opt == '--oldnotice':

with open(arg) as fp:

OLD_NOTICE = fp.read()

elif opt == '--newnotice':

with open(arg) as fp:

NEW_NOTICE = fp.read()

for arg in args:

process(arg)

def process(file):

with open(file) as f:

data = f.read()

i = data.find(OLD_NOTICE)

if i < 0:

if VERBOSE:

print('no change:', file)

return

elif DRYRUN or VERBOSE:

print(' change:', file)

if DRYRUN:

# Don't actually change the file

return

data = data[:i] + NEW_NOTICE + data[i+len(OLD_NOTICE):]

new = file + ".new"

backup = file + ".bak"

with open(new, "w") as f:

f.write(data)

os.rename(file, backup)

os.rename(new, file)

if __name__ == '__main__':

main()

cpython/Tools/scripts/fixnotice.py at master · python-emscripten/cpython · GitHub

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