#	Programmer:	Daniel Pozmanter
#	E-mail:		drpython@bluebottle.com
#	Note:		You must reply to the verification e-mail to get through.
#
#	Copyright 2003-2005 Daniel Pozmanter
#
#	Distributed under the terms of the GPL (GNU Public Lisense)
#
#    DrPython is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#Tab Nanny Check: returns a string on checking.

from tabnanny import *

#Copied from tabnanny by Tim Peters, then hacked to work the way I want.

import os
import tokenize

__all__ = ["check", "NannyNag", "process_tokens"]

verbose = 0
filename_only = 0

def errprint(*args):
	printstr(args)

def printstr(*args):
	result = ''
	sep = ''
	for arg in args:
		result += sep + str(arg)
		sep = ' '
	return result + '\n'

def Check(file):
	"""check(file_or_dir)

	If file_or_dir is a directory and not a symbolic link, then recursively
	descend the directory tree named by file_or_dir, checking all .py files
	along the way. If file_or_dir is an ordinary Python source file, it is
	checked for whitespace related problems. The diagnostic messages are
	written to standard output using the print statement.
	"""

	result = ''

	if os.path.isdir(file) and not os.path.islink(file):
		if verbose:
			result += printstr("%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 result

	try:
		f = open(file)
	except IOError, msg:
		result += errprint("%s: I/O Error: %s" % (`file`, str(msg)))
		return result

	if verbose > 1:
		result += printstr("checking", `file`, "...")

	try:
		process_tokens(tokenize.generate_tokens(f.readline))

	except tokenize.TokenError, msg:
		result += errprint("%s: Token Error: %s" % (`file`, str(msg)))
		return result

	except NannyNag, nag:
		badline = nag.get_lineno()
		line = nag.get_line()
		if verbose:
			result += printstr("%s: *** Line %d: trouble in tab city! ***" % (`file`, badline))
			result += printstr("offending line:", `line`)
			result += printstr(nag.get_msg())
		else:
			if ' ' in file: file = '"' + file + '"'
			if filename_only: result += printstr(file)
			else: result += printstr(file, badline, `line`)
		return result

	if verbose:
		result += printstr("%s: Clean bill of health." % `file`)
		
	return result