Print a list of all most-outer scope Go functions sorted by their length.

go-funclen

#!/usr/bin/env python3

import glob
import json
import sys


def main(args):
    if not args:
        print("Usage: go-funclen BASEDIR", file=sys.stderr)
        return 1

    basedir = args[0]
    files = glob.iglob(basedir + '/*/*.go')
    res = []

    for f in files:
        i = 0
        marker_n = 0
        marker_sig = ''
        for line in open(f).readlines():
            i += 1
            if line.startswith('func '):
                marker_n = i
                marker_sig = line.strip()[5:-1]
            if line.startswith('}'):
                if marker_n > 0:
                    res.append((f, marker_sig, i-marker_n-1))
                    marker_n = -1
                    marker_sig = ''

    for e in sorted(res, key=lambda x: x[2]):
        print('{: >3} {: <35} {}'.format(e[2], e[0], e[1]))


if __name__ == '__main__':
    try:
        sys.exit(main(sys.argv[1:]))
    except KeyboardInterrupt:
        sys.exit(1)