cull the interested cpplint violations from the complete report

cull_cpplint_violation.py

#!/usr/bin/python

import sys, os
from sys import argv
from unidiff import PatchSet
import subprocess

def parse_log_line(line):
	"""
	parse a line from the cpplint results with --output=vs7
	"""
	if ":" not in line:
		return None
	file_lineno = line.split(":")[0]
	if "(" not in file_lineno:
		return None
	(file, lineno) = file_lineno.split("(")
	file = file.replace("\\", "/")  # for Windows
	lineno = lineno[:-1]
	try:
		lineno = int(lineno)
	except:
		return None
	return (file, lineno)

def cull_violations(inputFile, outputFile, diff):
	cull_list = []
	with open(inputFile) as input:
		try:
			patch_files = PatchSet(diff, encoding='utf-8')
		except UnicodeDecodeError as e:
			print(e)
			return 0

		for line in input:
			parsedLine = parse_log_line(line)
			if parsedLine is None:
				continue
			for patch in patch_files:
				if patch.path != parsedLine[0]:
					continue
				for p in patch:
					for l in p.target_lines():
						# if parsedLine[1] == 943:
						#	print(l.target_line_no, parsedLine[1], patch, l, l.is_context, l.is_removed, l.is_added)
						if any((l.is_removed, l.is_context)):
							continue
						if l.target_line_no != parsedLine[1]:
							continue
						cull_list.append(line)
		
		with open(outputFile, 'w') as out:
			if len(cull_list) == 0:
				out.write("\n")
				return 0
			for line in cull_list:
				out.write(line)
	return 1

if __name__ == "__main__":
	if len(argv) < 3:
		print("Usage: %s {input log file} {output log file} <diff file>" % argv[0])
		sys.exit(1)
	if len(argv) != 4:
		diff = subprocess.check_output("git format-patch -1 --stdout HEAD", shell=True)
	else:
		with open(argv[3]) as f:
			diff = f.read()
	ret = cull_violations(argv[1], argv[2], diff)
	sys.exit(ret)

@echo off
SETLOCAL EnableDelayedExpansion
set X=
for /f "tokens=*" %%i IN ('git diff --name-only HEAD~') DO SET X=%%i !X!
REM echo %X%

py -2 -m cpplint --counting=detailed --output=vs7 --filter=-whitespace/tab,-whitespace/line_length,-readability/casting,-legal/copyright,-build/header_guard,-build/include,-build/include_subdir,-runtime/references,-runtime/int %X% 2>cpplint.log
cull_violation.py cpplint.log cpplint_diff.log
type cpplint_diff.log