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venv/Lib/site-packages/sqlparse/cli.py

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+#!/usr/bin/env python
+#
+# Copyright (C) 2009-2020 the sqlparse authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of python-sqlparse and is released under
+# the BSD License: https://opensource.org/licenses/BSD-3-Clause
+
+"""Module that contains the command line app.
+
+Why does this file exist, and why not put this in __main__?
+  You might be tempted to import things from __main__ later, but that will
+  cause problems: the code will get executed twice:
+  - When you run `python -m sqlparse` python will execute
+    ``__main__.py`` as a script. That means there won't be any
+    ``sqlparse.__main__`` in ``sys.modules``.
+  - When you import __main__ it will get executed again (as a module) because
+    there's no ``sqlparse.__main__`` in ``sys.modules``.
+  Also see (1) from http://click.pocoo.org/5/setuptools/#setuptools-integration
+"""
+
+import argparse
+import sys
+from io import TextIOWrapper
+
+import sqlparse
+from sqlparse.exceptions import SQLParseError
+
+
+# TODO: Add CLI Tests
+# TODO: Simplify formatter by using argparse `type` arguments
+def create_parser():
+    _CASE_CHOICES = ['upper', 'lower', 'capitalize']
+
+    parser = argparse.ArgumentParser(
+        prog='sqlformat',
+        description='Format FILE according to OPTIONS. Use "-" as FILE '
+                    'to read from stdin.',
+        usage='%(prog)s  [OPTIONS] FILE, ...',
+    )
+
+    parser.add_argument('filename')
+
+    parser.add_argument(
+        '-o', '--outfile',
+        dest='outfile',
+        metavar='FILE',
+        help='write output to FILE (defaults to stdout)')
+
+    parser.add_argument(
+        '--version',
+        action='version',
+        version=sqlparse.__version__)
+
+    group = parser.add_argument_group('Formatting Options')
+
+    group.add_argument(
+        '-k', '--keywords',
+        metavar='CHOICE',
+        dest='keyword_case',
+        choices=_CASE_CHOICES,
+        help='change case of keywords, CHOICE is one of {}'.format(
+            ', '.join('"{}"'.format(x) for x in _CASE_CHOICES)))
+
+    group.add_argument(
+        '-i', '--identifiers',
+        metavar='CHOICE',
+        dest='identifier_case',
+        choices=_CASE_CHOICES,
+        help='change case of identifiers, CHOICE is one of {}'.format(
+            ', '.join('"{}"'.format(x) for x in _CASE_CHOICES)))
+
+    group.add_argument(
+        '-l', '--language',
+        metavar='LANG',
+        dest='output_format',
+        choices=['python', 'php'],
+        help='output a snippet in programming language LANG, '
+             'choices are "python", "php"')
+
+    group.add_argument(
+        '--strip-comments',
+        dest='strip_comments',
+        action='store_true',
+        default=False,
+        help='remove comments')
+
+    group.add_argument(
+        '-r', '--reindent',
+        dest='reindent',
+        action='store_true',
+        default=False,
+        help='reindent statements')
+
+    group.add_argument(
+        '--indent_width',
+        dest='indent_width',
+        default=2,
+        type=int,
+        help='indentation width (defaults to 2 spaces)')
+
+    group.add_argument(
+        '--indent_after_first',
+        dest='indent_after_first',
+        action='store_true',
+        default=False,
+        help='indent after first line of statement (e.g. SELECT)')
+
+    group.add_argument(
+        '--indent_columns',
+        dest='indent_columns',
+        action='store_true',
+        default=False,
+        help='indent all columns by indent_width instead of keyword length')
+
+    group.add_argument(
+        '-a', '--reindent_aligned',
+        action='store_true',
+        default=False,
+        help='reindent statements to aligned format')
+
+    group.add_argument(
+        '-s', '--use_space_around_operators',
+        action='store_true',
+        default=False,
+        help='place spaces around mathematical operators')
+
+    group.add_argument(
+        '--wrap_after',
+        dest='wrap_after',
+        default=0,
+        type=int,
+        help='Column after which lists should be wrapped')
+
+    group.add_argument(
+        '--comma_first',
+        dest='comma_first',
+        default=False,
+        type=bool,
+        help='Insert linebreak before comma (default False)')
+
+    group.add_argument(
+        '--encoding',
+        dest='encoding',
+        default='utf-8',
+        help='Specify the input encoding (default utf-8)')
+
+    return parser
+
+
+def _error(msg):
+    """Print msg and optionally exit with return code exit_."""
+    sys.stderr.write('[ERROR] {}\n'.format(msg))
+    return 1
+
+
+def main(args=None):
+    parser = create_parser()
+    args = parser.parse_args(args)
+
+    if args.filename == '-':  # read from stdin
+        wrapper = TextIOWrapper(sys.stdin.buffer, encoding=args.encoding)
+        try:
+            data = wrapper.read()
+        finally:
+            wrapper.detach()
+    else:
+        try:
+            with open(args.filename, encoding=args.encoding) as f:
+                data = ''.join(f.readlines())
+        except OSError as e:
+            return _error(
+                'Failed to read {}: {}'.format(args.filename, e))
+
+    close_stream = False
+    if args.outfile:
+        try:
+            stream = open(args.outfile, 'w', encoding=args.encoding)
+            close_stream = True
+        except OSError as e:
+            return _error('Failed to open {}: {}'.format(args.outfile, e))
+    else:
+        stream = sys.stdout
+
+    formatter_opts = vars(args)
+    try:
+        formatter_opts = sqlparse.formatter.validate_options(formatter_opts)
+    except SQLParseError as e:
+        return _error('Invalid options: {}'.format(e))
+
+    s = sqlparse.format(data, **formatter_opts)
+    stream.write(s)
+    stream.flush()
+    if close_stream:
+        stream.close()
+    return 0