travis2bashes

#!/usr/bin/env python
""" Process .travis.yml and make bash fragments for testing

Dump example vars, install, testing shell scripts to files for local testing
"""
from __future__ import print_function

import sys
import os
from os.path import join as pjoin, dirname
import warnings

import argparse # Python 2.6, really?

# pip install pyyaml
import yaml

sys.path.append(dirname(__file__))

from travisparse import get_envs, TravisError, get_yaml_entry

def main():
    parser = argparse.ArgumentParser(
        description='Extract bash fragments from .travis.yml file')
    parser.add_argument('--out-dir', default='working',
                        help = 'output directory for fragments')
    parser.add_argument('--no-vars', action='store_true',
                        help = 'do not write vars script file')
    args = parser.parse_args()
    out_dir = args.out_dir
    with open('.travis.yml', 'rt') as fobj:
        travis_dict = yaml.load(fobj)
    try:
        os.mkdir(out_dir)
    except OSError:
        pass
    # vars
    if not args.no_vars:
        try:
            var_str = get_envs(travis_dict)
        except TravisError:
            warnings.warn('Could not get travis vars from file')
        else:
            vars_fname = pjoin(out_dir, '_frag_travis_vars.sh')
            with open(vars_fname, 'wt') as fobj:
                fobj.write(var_str)
            print("Written " + vars_fname)
    # install
    install = get_yaml_entry(travis_dict, 'install')
    install_fname = pjoin(out_dir, '_frag_travis_install.sh')
    with open(install_fname, 'wt') as fobj:
        fobj.write('\n'.join(install) + '\n')
    print('Written ' + install_fname)
    # test
    test = get_yaml_entry(travis_dict, 'script')
    test_fname = pjoin(out_dir, '_frag_travis_test.sh')
    with open(test_fname, 'wt') as fobj:
        fobj.write('\n'.join(test) + '\n')
    print('Written ' + test_fname)


if __name__ == '__main__':
    main()