mirror of
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62 lines
1.5 KiB
Python
62 lines
1.5 KiB
Python
from __future__ import print_function
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from __future__ import unicode_literals
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import io
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import re
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import yaml
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from aspy.yaml import ordered_load
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def _indent(s):
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lines = s.splitlines(True)
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return ''.join(' ' * 4 + line if line.strip() else line for line in lines)
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def _is_header_line(line):
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return (line.startswith(('#', '---')) or not line.strip())
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def _migrate_map(contents):
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# Find the first non-header line
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lines = contents.splitlines(True)
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i = 0
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while _is_header_line(lines[i]):
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i += 1
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header = ''.join(lines[:i])
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rest = ''.join(lines[i:])
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if isinstance(ordered_load(contents), list):
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# If they are using the "default" flow style of yaml, this operation
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# will yield a valid configuration
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try:
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trial_contents = header + 'repos:\n' + rest
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ordered_load(trial_contents)
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contents = trial_contents
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except yaml.YAMLError:
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contents = header + 'repos:\n' + _indent(rest)
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return contents
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def _migrate_sha_to_rev(contents):
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reg = re.compile(r'(\n\s+)sha:')
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return reg.sub(r'\1rev:', contents)
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def migrate_config(config_file, quiet=False):
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with io.open(config_file) as f:
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orig_contents = contents = f.read()
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contents = _migrate_map(contents)
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contents = _migrate_sha_to_rev(contents)
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if contents != orig_contents:
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with io.open(config_file, 'w') as f:
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f.write(contents)
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print('Configuration has been migrated.')
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elif not quiet:
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print('Configuration is already migrated.')
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