Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 3540ef16c19f2260e347a679cb27d44ba734bec6 authored by Guido van Rossum on 31 August 2007, 15:07:53 UTC
Tagging for release of Python 3.0a1.
Tagging for release of Python 3.0a1.
Tip revision: 3540ef1
finddiv.py
#! /usr/bin/env python
"""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 os.error 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(lambda a, b: cmp(os.path.normcase(a), os.path.normcase(b)))
exit = None
for fn in files:
x = process(fn, listnames)
exit = exit or x
return exit
if __name__ == "__main__":
sys.exit(main())