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#!/usr/bin/env python3
# utility to check meta errors for simple format spec mistakes.
# Copyright (C) 2016-2023 Free Software Foundation, Inc.
#
# This file is part of GNU Modula-2.
#
# GNU Modula-2 is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Modula-2 is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Modula-2; see the file COPYING. If not, write to the
# Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
import argparse
import os
import pathlib
import sys
exit_code = 0
def visit_dir(directory, ext, func):
# visit_dir - call func for each file below, dir, matching extension, ext.
list_of_files = os.listdir(directory)
list_of_files.sort()
for filename in list_of_files:
path = pathlib.Path(filename)
full = os.path.join(directory, filename)
if path.suffix == ext:
func(full)
def check_format_spec(filename, line, no):
global exit_code
percent = line.find('%')
if percent >= 0:
specifier = False
for ch in line[percent:]:
if ch in ['{', '%']:
pass
elif ch in ['1', '2', '3', '4']:
if specifier:
sys.stderr.write('%s:%d: format specifier error, the symbol position digit must be before the specifier: %s\n' % (filename, no, line))
exit_code = 1
else:
specifier = True
def search_format(filename, line, no):
cbra = line.find('{')
while cbra >= 0:
colon = line.find(':', cbra)
end = line.find('}', cbra)
if end >= 0:
if (colon >= 0) and (colon < end):
end = colon
check_format_spec(filename, line[cbra:end], no)
cbra = line.find('{', end)
else:
return
def check_string_quote (filename, line, no, quote):
end = line.find(quote, 1)
if end > 0:
search_format(filename, line[1:end], no)
def check_string (filename, line, no):
quote = line.find("'")
if quote >= 0:
check_string_quote(filename, line[quote:], no, "'")
quote = line.find('"')
if quote >= 0:
check_string_quote(filename, line[quote:], no, '"')
def check_meta_spec (filename):
lines = open(filename).readlines()
extra = 0
for no, line in enumerate(lines):
if extra > 0:
extra -= 1
check_string(filename, line, no+1)
elif "Meta" in line:
meta = line.find("Meta")
if meta >= 0:
bra = line.find("(", meta)
if bra >= 0:
check_string(filename, line[bra:], no+1)
extra = 1
def handle_arguments():
# handle_arguments create and return the args object.
parser = argparse.ArgumentParser()
parser.add_argument('-s', '--srcdir',
help='set source directory.',
default='.', action='store')
args = parser.parse_args()
return args
def main():
args = handle_arguments()
visit_dir(args.srcdir, '.mod', check_meta_spec)
visit_dir(args.srcdir, '.bnf', check_meta_spec)
sys.exit(exit_code)
main()
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