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#!/usr/bin/env python3
# Check files for whitespace problems
#
# Copyright (C) 2018 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import sys, os.path, unicodedata
HaveError = False
def report_error(filename, lineno, msg):
global HaveError
if not HaveError:
sys.stderr.write("\n\nERROR:\nERROR: White space errors\nERROR:\n")
HaveError = True
sys.stderr.write("%s:%d: %s\n" % (filename, lineno + 1, msg))
def check_file(filename):
# 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"):
report_error(filename, lineno, "Extra newlines at end of file")
def main():
files = sys.argv[1:]
for filename in files:
check_file(filename)
if HaveError:
sys.stderr.write("\n\n")
sys.exit(-1)
if __name__ == "__main__":
main()
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