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#!/usr/bin/env python
########################################################################
#
# Copyright (c) 2010 Jonas Jensen, Miklos Vajna
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use,
# copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following
# conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
########################################################################
import sys, re, subprocess, os, optparse, string
class Parser:
"""
This parser extracts comments from source files, tries to guess
their language and then prints out the german ones.
"""
def __init__(self):
self.strip = string.punctuation + " \n"
op = optparse.OptionParser()
op.set_usage("%prog [options] <rootdir>\n\n" +
"Searches for german comments in cxx/hxx source files inside a given root\n" +
"directory recursively.")
op.add_option("-f", "--filenames-only", action="store_true", dest="filenames_only", default=False,
help="Only print the filenames of files containing German comments")
op.add_option("-v", "--verbose", action="store_true", dest="verbose", default=False,
help="Turn on verbose mode (print only positives progress to stderr)")
op.add_option("-l", "--line-numbers", action="store_true", dest="line_numbers", default=False,
help="Prints the filenames and line numbers only.")
op.add_option("-L", "--line-numbers-pos", action="store_true", dest="line_numbers_pos", default=False,
help="Prints the filenames and line numbers only (if positive).")
op.add_option("-t", "--threshold", action="store", dest="THRESHOLD", default=0,
help="When used with '--line-numbers', only bothers outputting comment info if there are more than X number of flagged comments. Useful for weeding out false positives.")
self.options, args = op.parse_args()
try:
dir = args[0]
except IndexError:
dir = "."
self.check_source_files(dir)
def get_comments(self, filename):
"""
Extracts the source code comments.
"""
linenum = 0
if self.options.verbose:
sys.stderr.write("processing file '%s'...\n" % filename)
sock = open(filename)
# add an empty line to trigger the output of collected oneliner
# comment group
lines = sock.readlines() + ["\n"]
sock.close()
in_comment = False
buf = []
count = 1
for i in lines:
if "//" in i and not in_comment:
# if we find a new //-style comment, then we
# just append it to a previous one if: there is
# only whitespace before the // mark that is
# necessary to make comments longer, giving
# more reliable output
if not len(re.sub("(.*)//.*", r"\1", i).strip(self.strip)):
s = re.sub(".*// ?", "", i).strip(self.strip)
if len(s):
buf.append(s)
else:
# otherwise it's an independent //-style comment in the next line
yield (count, "\n ".join(buf))
buf = [re.sub(".*// ?", "", i.strip(self.strip))]
elif "//" not in i and not in_comment and len(buf) > 0:
# first normal line after a // block
yield (count, "\n ".join(buf))
buf = []
elif "/*" in i and "*/" not in i and not in_comment:
# start of a real multiline comment
in_comment = True
linenum = count
s = re.sub(".*/\*+", "", i.strip(self.strip))
if len(s):
buf.append(s.strip(self.strip))
elif in_comment and not "*/" in i:
# in multiline comment
s = re.sub("^( |\|)*\*?", "", i)
if len(s.strip(self.strip)):
buf.append(s.strip(self.strip))
elif "*/" in i and in_comment:
# end of multiline comment
in_comment = False
s = re.sub(r"\*+/.*", "", i.strip(self.strip))
if len(s):
buf.append(s)
yield (count, "\n ".join(buf))
buf = []
elif "/*" in i and "*/" in i:
# c-style oneliner comment
yield (count, re.sub(".*/\*(.*)\*/.*", r"\1", i).strip(self.strip))
count += 1
def get_lang(self, s):
""" the output is 'german' or 'english' or 'german or english'. when
unsure, just don't warn, there are strings where you just can't
teremine the results reliably, like '#110680#' """
cwd = os.getcwd()
# change to our directory
os.chdir(os.path.split(os.path.abspath(sys.argv[0]))[0])
sock = subprocess.Popen(["text_cat/text_cat", "-d", "text_cat/LM"], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
sock.stdin.write(s)
sock.stdin.close()
lang = sock.stdout.read().strip()
sock.stdout.close()
os.chdir(cwd)
return lang
def is_german(self, s):
"""
determines if a string is german or not
"""
# for short strings we can't do reliable recognition, so skip
# short strings and less than 4 words
s = s.replace('\n', ' ')
if len(s) < 32 or len(s.split()) < 4:
return False
return "german" == self.get_lang(s)
def check_file(self, path):
"""
checks each comment in a file
"""
def tab_calc (string):
START = 40 #Default of 10 tabs
if len(string) >= START:
return 1, 0
diff = START - len(string)
if diff % 4 is not 0:
padding = 1
else:
padding = 0
return (diff/4)+padding
if self.options.line_numbers or self.options.line_numbers_pos:
TABS = "\t"*10
path_linenums = []
for linenum, s in self.get_comments(path):
if self.is_german(s):
path_linenums.append(linenum)
valid = len(path_linenums) > int(self.options.THRESHOLD)
if self.options.line_numbers:
sys.stderr.write("%s ... %s positives -- %s\n" % (path, str(len(path_linenums)), str(valid)))
if valid:
if self.options.line_numbers_pos:
sys.stderr.write("%s ... %s positives\n" % (path, str(len(path_linenums))))
return
if len(path) + (len(path_linenums)*4) > 75:
print "%s:\n" % path
while(path_linenums):
i = 0
numline = []
while i < 10:
try:
numline.append(path_linenums[0])
path_linenums.remove(path_linenums[0])
except IndexError:
i = 10
i+=1
numline = [str(i) for i in numline]
print "%s%s" %(TABS, ",".join(numline))
else:
if self.options.line_numbers:
path_linenums = [str(i) for i in path_linenums]
print "%s:%s%s" % (path,"\t"*tab_calc(path),",".join(path_linenums))
elif not self.options.filenames_only:
for linenum, s in self.get_comments(path):
if self.is_german(s) and self.options.line_numbers:
print "%s:%s: %s" % (path, linenum, s)
else:
fnames = set([])
for linenum, s in self.get_comments(path):
if self.is_german(s):
# Make sure we print each filename only once
fnames.add(path)
# Print the filenames
for f in fnames:
print f
def check_source_files(self, dir):
"""
checks each _tracked_ file in a directory recursively
"""
sock = os.popen(r"git ls-files '%s' |egrep '\.(c|h)xx$'" % dir)
lines = sock.readlines()
sock.close()
for path in lines:
self.check_file(path.strip())
try:
Parser()
except KeyboardInterrupt:
print "Interrupted!"
sys.exit(0)
# vim:set shiftwidth=4 softtabstop=4 expandtab:
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