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#! /usr/bin/env python
"""The Tab Police watches for possibly inconsistent indentation."""
import os
import sys
import getopt
import string
import tokenize
verbose = 0
def main():
global verbose
try:
opts, args = getopt.getopt(sys.argv[1:], "v")
except getopt.error, msg:
print msg
for o, a in opts:
if o == '-v':
verbose = verbose + 1
for arg in args:
check(arg)
def check(file):
if os.path.isdir(file) and not os.path.islink(file):
if verbose:
print "%s: listing directory" % `file`
names = os.listdir(file)
for name in names:
fullname = os.path.join(file, name)
if (os.path.isdir(fullname) and
not os.path.islink(fullname) or
os.path.normcase(name[-3:]) == ".py"):
check(fullname)
return
try:
f = open(file)
except IOError, msg:
print "%s: I/O Error: %s" % (`file`, str(msg))
return
if verbose > 1:
print "checking", `file`, "with tabsize 8..."
tokens = []
tokenize.tabsize = 8
try:
tokenize.tokenize(f.readline, tokens.append)
except tokenize.TokenError, msg:
print "%s: Token Error: %s" % (`file`, str(msg))
if verbose > 1:
print "checking", `file`, "with tabsize 1..."
f.seek(0)
alttokens = []
tokenize.tabsize = 1
try:
tokenize.tokenize(f.readline, alttokens.append)
except tokenize.TokenError, msg:
print "%s: Token Error: %s" % (`file`, str(msg))
f.close()
if tokens != alttokens:
badline = 0
n, altn = len(tokens), len(alttokens)
for i in range(max(n, altn)):
if i >= n:
x = None
else:
x = tokens[i]
if i >= altn:
y = None
else:
y = alttokens[i]
if x != y:
if x:
kind, token, start, end, line = x
else:
kind, token, start, end, line = y
badline = start[0]
break
if verbose:
print "%s: *** Line %d: trouble in tab city! ***" % (
`file`, badline)
print "offending line:", `line`
else:
print file, badline, `line`
else:
if verbose:
print "%s: Clean bill of health." % `file`
if __name__ == '__main__':
main()
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