check_scl_set_e

#!/usr/bin/env python

import re
import sys


def initilize_scl_dict():
    return {
        'line_count': 0,
        'found_set_e': False,
        'status': True,
        'hear_doc': {
            'in': False,
            'word': None,
        }
    }


def is_ignored_line(line):
    return re.match(r'^#', line) or re.match(r'^\s*$', line)


def analyze(scl_dict):
    if 'line_count' not in scl_dict:
        raise ValueError('scl_dict is invalid.')
    if 'found_set_e' not in scl_dict:
        raise ValueError('scl_dict is invalid.')
    status = True
    if scl_dict['line_count'] > 1 and not scl_dict['found_set_e']:
        status = False
    return status


if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("Usage: {0} <spec_file>".format(sys.argv[0]))
        sys.exit(1)

    spec_file = sys.argv[1]
    results = []
    with open(spec_file) as f:
        is_in_scl = False
        scl_dict = None

        for line in f:
            line = line.rstrip()

            m_here_doc_start = re.match(r'^.*<<-?\s*(\w+)\s*$', line)
            if is_ignored_line(line):
                continue
            if re.match(r'^%{\?scl:scl enable', line):
                # scl macro start line
                is_in_scl = True
                scl_dict = initilize_scl_dict()
            elif re.match(r'^%{\?scl:[\w"\']+}', line):
                # scl macro end line
                is_in_scl = False
                scl_dict['status'] = analyze(scl_dict)
                results.append(scl_dict)
            elif is_in_scl:
                if re.match(r'^set -e$', line):
                    scl_dict['found_set_e'] = True
                elif re.match(r'^.*\\\s*$', line):
                    # Skip back slash in the end of line.
                    pass
                elif m_here_doc_start:
                    # here document start line.
                    scl_dict['hear_doc']['in'] = True
                    scl_dict['hear_doc']['word'] = m_here_doc_start.group(1)
                elif (scl_dict['hear_doc']['in'] and
                      line == scl_dict['hear_doc']['word']):
                    # here document end line.
                    scl_dict['hear_doc']['in'] = False
                    scl_dict['line_count'] += 1
                elif scl_dict['hear_doc']['in']:
                    # Skip here document line except the end line.
                    pass
                else:
                    scl_dict['line_count'] += 1

    for scl_dict in results:
        status_str = 'OK' if scl_dict['status'] else 'NG'
        print('{}:[{}][{}]'.format(spec_file, status_str,
              scl_dict['line_count']))
    sys.exit(0)