Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 02d1db9f46f2c9de879536206028a62d1a3f7bea authored by Larry Hastings on 29 March 2015, 22:34:26 UTC
Release bump for Python 3.5.0a3.
Release bump for Python 3.5.0a3.
Tip revision: 02d1db9
finddiv.py
#! /usr/bin/env python3
"""finddiv - a grep-like tool that looks for division operators.
Usage: finddiv [-l] file_or_directory ...
For directory arguments, all files in the directory whose name ends in
.py are processed, and subdirectories are processed recursively.
This actually tokenizes the files to avoid false hits in comments or
strings literals.
By default, this prints all lines containing a / or /= operator, in
grep -n style. With the -l option specified, it prints the filename
of files that contain at least one / or /= operator.
"""
import os
import sys
import getopt
import tokenize
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], "lh")
except getopt.error as msg:
usage(msg)
return 2
if not args:
usage("at least one file argument is required")
return 2
listnames = 0
for o, a in opts:
if o == "-h":
print(__doc__)
return
if o == "-l":
listnames = 1
exit = None
for filename in args:
x = process(filename, listnames)
exit = exit or x
return exit
def usage(msg):
sys.stderr.write("%s: %s\n" % (sys.argv[0], msg))
sys.stderr.write("Usage: %s [-l] file ...\n" % sys.argv[0])
sys.stderr.write("Try `%s -h' for more information.\n" % sys.argv[0])
def process(filename, listnames):
if os.path.isdir(filename):
return processdir(filename, listnames)
try:
fp = open(filename)
except IOError as msg:
sys.stderr.write("Can't open: %s\n" % msg)
return 1
g = tokenize.generate_tokens(fp.readline)
lastrow = None
for type, token, (row, col), end, line in g:
if token in ("/", "/="):
if listnames:
print(filename)
break
if row != lastrow:
lastrow = row
print("%s:%d:%s" % (filename, row, line), end=' ')
fp.close()
def processdir(dir, listnames):
try:
names = os.listdir(dir)
except OSError as msg:
sys.stderr.write("Can't list directory: %s\n" % dir)
return 1
files = []
for name in names:
fn = os.path.join(dir, name)
if os.path.normcase(fn).endswith(".py") or os.path.isdir(fn):
files.append(fn)
files.sort(key=os.path.normcase)
exit = None
for fn in files:
x = process(fn, listnames)
exit = exit or x
return exit
if __name__ == "__main__":
sys.exit(main())