appveyor で文字コードをチェックして UTF-8 になっていなかったら処理を失敗させる

appveyor.yml

@@ -16,6 +16,8 @@ platform:
 
 build_script:
 - cmd: >-
+    call checkEncoding.bat
+
     call build-all.bat %PLATFORM% %CONFIGURATION%
 
     call tests\build-and-test.bat %PLATFORM% %CONFIGURATION%

checkEncoding.bat

@@ -0,0 +1,13 @@
+@echo off
+if not "%APPVEYOR_BUILD_NUMBER%" == "" (
+	@echo installing chardet
+	pip install chardet --user
+) else (
+	@echo skip installing chardet
+)
+
+@echo ---- start python checkEncoding.py ----
+python checkEncoding.py || (echo error checkEncoding.py  && exit /b 1)
+@echo ---- end   python checkEncoding.py ----
+@echo.
+exit /b 0

checkEncoding.py

@@ -0,0 +1,82 @@
+from chardet.universaldetector import UniversalDetector
+import chardet
+import os
+import sys
+import subprocess 
+
+# 指定したファイルの文字コードを返す
+def check_encoding(file_path):
+	detector = UniversalDetector()
+	with open(file_path, mode='rb') as f:
+		for binary in f:
+			detector.feed(binary)
+			if detector.done:
+				break
+	detector.close()
+	return detector.result['encoding']
+
+# チェック対象の拡張子か判断する
+def checkExtension(file):
+	extensions = [
+		".cpp",
+		".h",
+	]
+	base, ext = os.path.splitext(file)
+	if ext in extensions:
+		return True
+	else:
+		return False
+
+def getMergeBase():
+	output = subprocess.check_output('git show-branch --merge-base origin/master HEAD')
+	outputDec = output.decode()
+	mergeBase = outputDec.splitlines()
+	return mergeBase[0]
+
+# ベースとの差分をチェック
+def getDiffFiles():
+	mergeBase = getMergeBase()
+
+	output = subprocess.check_output('git diff ' + mergeBase + ' --name-only --diff-filter=dr')
+	diffFiles = output.decode()
+	return diffFiles.splitlines()
+
+def checkEncodingResult(encoding):
+	expectEncoding = [
+		"utf-8",
+		"ascii",
+	]
+	encoding = encoding.lower()
+	if encoding in expectEncoding:
+		return True
+
+	return False
+
+# デバッグ用
+# すべてのファイルの文字コードを調べてチェックする
+def checkAll():
+	for rootdir, dirs, files in os.walk('.'):
+		for file in files:
+			if checkExtension(file):
+				full = os.path.join(rootdir, file)
+				encoding = check_encoding(full)
+				if not checkEncodingResult(encoding):
+					print (encoding, full)
+
+if __name__ == '__main__':
+	count = 0
+
+	files = getDiffFiles()
+	for file in files:
+		if checkExtension(file):
+			encoding = check_encoding(file)
+			if not checkEncodingResult(encoding):
+				print (encoding, file)
+				count = count + 1
+
+	if count > 0:
+		print ("return 1")
+		sys.exit(1)
+	else:
+		print ("return 0")
+		sys.exit(0)