raczben · April 2, 2020 16:30
diff --git a/unused_signals.py b/unused_signals.py
 #
 # unused_signals.py 
 #
 # Prints unused signals in one or multiple VHDL files
 #

 import os
 import sys
 import re
 import argparse
 import glob

 here = os.path.dirname(__file__)

 def main(args):
    file_list = []
    errors = []
    
    if not args.recursive:
        file_list.append(args.filename)
    else:
        if args.filename is None:
            args.filename = '.'
        glob_pattern = f'{args.filename}/**/{args.include}'
        file_list = [f for f in glob.glob(glob_pattern, recursive=True)]
        
    for f in file_list:
        dump_unused(f)

 def dump_unused(filename, verbose=False):

    pat_signal = r'\s+signal\s+(\w+)\s+:'
    pat_signal = re.compile(pat_signal)

    signals = []
    file_content = ''

    with open(filename) as f:
        file_content = f.read()

    for i, l in enumerate(file_content.splitlines()):
        m = re.match(pat_signal, l)
        if m:
            sig = {
                'name': m.group(1),
                'line': i+1
                }
            signals.append(sig)

    # Remove comments
    file_content = re.sub('--.+$', '', file_content, flags=re.MULTILINE)
    unused_signals = []
    for sig in signals:
        if file_content.count(sig['name']) <= 2:
            unused_signals.append(sig)

    if unused_signals:
        print()
        print(filename)
        print('='*len(filename))
        print('Unused signals:')
        for sig in unused_signals:
            print(f"  {sig['line']}: {sig['name']}")
    elif verbose:
        print()
        print(filename)
        print('='*len(filename))
        print('no unused signals:')


 if __name__ == '__main__':

    parser = argparse.ArgumentParser(
        description='VHDL improver: report some static VHDL code issues. This version just dumps '
                    'the unused signals.'
        )
    parser.add_argument('filename', type=str, default=None, nargs="?",
        help='File to read to dump unused signals. Globbing expressions are accepted.',
        )
    parser.add_argument('--recursive', '-r', action='store_true',
        help='Read files recursively.',
        )
    parser.add_argument('--include', type=str, default='*vhd',
        help='Search only files whose base name matches GLOB',
        )
    parser.add_argument('--verbose', '-v', action='store_true',
        help='Print more information',
        )
    args = parser.parse_args()
    
    # Validate arguments:
    if (args.filename is None) and (not args.recursive):
        print('A filename or the --recursive flag must given.')
        parser.print_help()
        sys.exit(-1)

    # Call the main:
    main(args)
	#
	# unused_signals.py
	#
	# Prints unused signals in one or multiple VHDL files
	#

	import os
	import sys
	import re
	import argparse
	import glob

	here = os.path.dirname(__file__)

	def main(args):
	file_list = []
	errors = []

	if not args.recursive:
	file_list.append(args.filename)
	else:
	if args.filename is None:
	args.filename = '.'
	glob_pattern = f'{args.filename}/**/{args.include}'
	file_list = [f for f in glob.glob(glob_pattern, recursive=True)]

	for f in file_list:
	dump_unused(f)

	def dump_unused(filename, verbose=False):

	pat_signal = r'\s+signal\s+(\w+)\s+:'
	pat_signal = re.compile(pat_signal)

	signals = []
	file_content = ''

	with open(filename) as f:
	file_content = f.read()

	for i, l in enumerate(file_content.splitlines()):
	m = re.match(pat_signal, l)
	if m:
	sig = {
	'name': m.group(1),
	'line': i+1
	}
	signals.append(sig)

	# Remove comments
	file_content = re.sub('--.+$', '', file_content, flags=re.MULTILINE)
	unused_signals = []
	for sig in signals:
	if file_content.count(sig['name']) <= 2:
	unused_signals.append(sig)

	if unused_signals:
	print()
	print(filename)
	print('='*len(filename))
	print('Unused signals:')
	for sig in unused_signals:
	print(f" {sig['line']}: {sig['name']}")
	elif verbose:
	print()
	print(filename)
	print('='*len(filename))
	print('no unused signals:')


	if __name__ == '__main__':

	parser = argparse.ArgumentParser(
	description='VHDL improver: report some static VHDL code issues. This version just dumps '
	'the unused signals.'
	)
	parser.add_argument('filename', type=str, default=None, nargs="?",
	help='File to read to dump unused signals. Globbing expressions are accepted.',
	)
	parser.add_argument('--recursive', '-r', action='store_true',
	help='Read files recursively.',
	)
	parser.add_argument('--include', type=str, default='*vhd',
	help='Search only files whose base name matches GLOB',
	)
	parser.add_argument('--verbose', '-v', action='store_true',
	help='Print more information',
	)
	args = parser.parse_args()

	# Validate arguments:
	if (args.filename is None) and (not args.recursive):
	print('A filename or the --recursive flag must given.')
	parser.print_help()
	sys.exit(-1)

	# Call the main:
	main(args)