global HaveError

if not HaveError:

sys.stderr.write("\n\nERROR:\nERROR: White space errors\nERROR:\n")

HaveError = True

# Open and read file

try:

f = open(filename, 'rb')

data = f.read()

f.close()

except IOError:

return

if not data:

# Empty files are okay

return

# Do checks

is_source_code = any([filename.endswith(s) for s in ['.c', '.h', '.py']])

lineno = 0

for lineno, line in enumerate(data.split(b'\n')):

# Verify line is valid utf-8

try:

line = line.decode('utf-8')

except UnicodeDecodeError:

report_error(filename, lineno, "Found non utf-8 character")

continue

# Check for control characters

for c in line:

if unicodedata.category(c).startswith('C'):

char_name = repr(c)

if c == '\t':

if os.path.basename(filename).lower() == 'makefile':

continue

char_name = 'tab'

report_error(filename, lineno, "Invalid %s character" % (

char_name,))

break

# Check for trailing space

if line.endswith(' ') or line.endswith('\t'):

report_error(filename, lineno, "Line has trailing spaces")

# Check for more than 80 characters

if is_source_code and len(line) > 80:

report_error(filename, lineno, "Line longer than 80 characters")

if not data.endswith(b'\n'):

report_error(filename, lineno, "No newline at end of file")

if data.endswith(b'\n\n'):

files = sys.argv[1:]

for filename in files:

check_file(filename)

if HaveError:

sys.stderr.write("\n\n")