Introduce the 'cli' module and call it from the script

bin/yamllint

@@ -15,68 +15,10 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from __future__ import print_function
-import os.path
 import sys
 
-import argparse
-
-from yamllint import APP_DESCRIPTION, APP_NAME, APP_VERSION
-from yamllint import config
-from yamllint.errors import YamlLintConfigError
-from yamllint import lint
-from yamllint import output
+from yamllint import cli
 
 
 if __name__ == '__main__':
-    parser = argparse.ArgumentParser(prog=APP_NAME,
-                                     description=APP_DESCRIPTION)
-    parser.add_argument('files', metavar='FILES', nargs='+',
-                        help='files to check')
-    parser.add_argument('-c', '--config', dest='config_file', action='store',
-                        help='path to a custom configuration')
-    parser.add_argument('-f', '--format',
-                        choices=('parsable', 'standard'), default='standard',
-                        help='format for parsing output')
-    parser.add_argument('-v', '--version', action='version',
-                        version='%s %s' % (APP_NAME, APP_VERSION))
-
-    # TODO: read from stdin when no filename?
-
-    args = parser.parse_args()
-
-    try:
-        if args.config_file is not None:
-            conf = config.parse_config_from_file(args.config_file)
-        elif os.path.isfile('.yamllint'):
-            conf = config.parse_config_from_file('.yamllint')
-        else:
-            conf = config.parse_config('extends: default')
-    except YamlLintConfigError as e:
-        print(e, file=sys.stderr)
-        sys.exit(-1)
-
-    return_code = 0
-
-    for file in args.files:
-        if args.format != 'parsable':
-            print('\033[4m%s\033[0m' % file)
-
-        try:
-            with open(file) as f:
-                for problem in lint(f, conf):
-                    if args.format == 'parsable':
-                        print(output.parsable_format(problem, file))
-                    else:
-                        print(output.standard_format(problem, file))
-
-                    if return_code == 0 and problem.level == 'error':
-                        return_code = 1
-        except EnvironmentError as e:
-            print(e)
-            return_code = -1
-
-        if args.format != 'parsable':
-            print('')
-
-    sys.exit(return_code)
+    cli.run(sys.argv[1:])