mirror of
https://github.com/powerline/powerline.git
synced 2025-09-26 19:39:05 +02:00
279 lines
8.1 KiB
Python
279 lines
8.1 KiB
Python
# vim:fileencoding=utf-8:noet
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from __future__ import absolute_import, unicode_literals, division, print_function
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import sys
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from powerline.lib.file_watcher import create_file_watcher
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def list_segment_key_values(segment, theme_configs, key, module=None, default=None):
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try:
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yield segment[key]
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except KeyError:
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pass
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try:
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name = segment['name']
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except KeyError:
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pass
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else:
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found_module_key = False
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for theme_config in theme_configs:
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try:
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segment_data = theme_config['segment_data']
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except KeyError:
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pass
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else:
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if module:
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try:
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yield segment_data[module + '.' + name][key]
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found_module_key = True
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except KeyError:
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pass
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if not found_module_key:
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try:
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yield segment_data[name][key]
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except KeyError:
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pass
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yield default
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def get_segment_key(merge, *args, **kwargs):
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if merge:
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ret = None
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for value in list_segment_key_values(*args, **kwargs):
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if ret is None:
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ret = value
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elif isinstance(ret, dict) and isinstance(value, dict):
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old_ret = ret
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ret = value.copy()
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ret.update(old_ret)
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else:
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return ret
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return ret
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else:
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return next(list_segment_key_values(*args, **kwargs))
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def get_function(data, segment):
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oldpath = sys.path
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sys.path = data['path'] + sys.path
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segment_module = str(segment.get('module', data['default_module']))
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try:
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return None, getattr(__import__(segment_module, fromlist=[segment['name']]), segment['name']), segment_module
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finally:
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sys.path = oldpath
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def get_string(data, segment):
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return data['get_key'](False, segment, None, 'contents'), None, None
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def get_filler(data, segment):
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return None, None, None
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segment_getters = {
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"function": get_function,
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"string": get_string,
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"filler": get_filler,
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"segment_list": get_function,
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}
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def get_attr_func(contents_func, key, args):
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try:
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func = getattr(contents_func, key)
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except AttributeError:
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return None
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else:
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if args is None:
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return lambda: func()
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else:
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return lambda pl, shutdown_event: func(pl=pl, shutdown_event=shutdown_event, **args)
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def process_segment_lister(pl, segment_info, parsed_segments, side, lister, subsegments, patcher_args):
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for subsegment_info, subsegment_update in lister(pl=pl, segment_info=segment_info, **patcher_args):
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for subsegment in subsegments:
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if subsegment_update:
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subsegment = subsegment.copy()
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subsegment.update(subsegment_update)
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if subsegment_update['priority_multiplier'] and subsegment['priority']:
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subsegment['priority'] *= subsegment_update['priority_multiplier']
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process_segment(pl, side, subsegment_info, parsed_segments, subsegment)
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return None
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def process_segment(pl, side, segment_info, parsed_segments, segment):
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if segment['type'] in ('function', 'segment_list'):
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pl.prefix = segment['name']
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try:
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if segment['type'] == 'function':
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contents = segment['contents_func'](pl, segment_info)
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else:
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contents = segment['contents_func'](pl, segment_info, parsed_segments, side)
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except Exception as e:
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pl.exception('Exception while computing segment: {0}', str(e))
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return
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if contents is None:
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return
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if isinstance(contents, list):
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segment_base = segment.copy()
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if contents:
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draw_divider_position = -1 if side == 'left' else 0
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for key, i, newval in (
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('before', 0, ''),
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('after', -1, ''),
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('draw_soft_divider', draw_divider_position, True),
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('draw_hard_divider', draw_divider_position, True),
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):
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try:
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contents[i][key] = segment_base.pop(key)
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segment_base[key] = newval
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except KeyError:
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pass
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draw_inner_divider = None
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if side == 'right':
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append = parsed_segments.append
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else:
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pslen = len(parsed_segments)
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append = lambda item: parsed_segments.insert(pslen, item)
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for subsegment in (contents if side == 'right' else reversed(contents)):
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segment_copy = segment_base.copy()
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segment_copy.update(subsegment)
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if draw_inner_divider is not None:
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segment_copy['draw_soft_divider'] = draw_inner_divider
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draw_inner_divider = segment_copy.pop('draw_inner_divider', None)
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append(segment_copy)
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else:
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segment['contents'] = contents
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parsed_segments.append(segment)
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elif segment['width'] == 'auto' or (segment['type'] == 'string' and segment['contents'] is not None):
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parsed_segments.append(segment)
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def gen_segment_getter(pl, ext, common_config, theme_configs, default_module=None):
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data = {
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'default_module': default_module or 'powerline.segments.' + ext,
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'path': common_config['paths'],
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}
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def get_key(merge, segment, module, key, default=None):
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return get_segment_key(merge, segment, theme_configs, key, module, default)
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data['get_key'] = get_key
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def get(segment, side):
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segment_type = segment.get('type', 'function')
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try:
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get_segment_info = segment_getters[segment_type]
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except KeyError:
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raise TypeError('Unknown segment type: {0}'.format(segment_type))
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try:
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contents, _contents_func, module = get_segment_info(data, segment)
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except Exception as e:
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pl.exception('Failed to generate segment from {0!r}: {1}', segment, str(e), prefix='segment_generator')
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return None
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if not get_key(False, segment, module, 'display', True):
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return None
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if segment_type == 'function':
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highlight_group = [module + '.' + segment['name'], segment['name']]
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else:
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highlight_group = segment.get('highlight_group') or segment.get('name')
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if segment_type in ('function', 'segment_list'):
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args = dict(((str(k), v) for k, v in get_key(True, segment, module, 'args', {}).items()))
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if segment_type == 'segment_list':
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# Handle startup and shutdown of _contents_func?
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subsegments = [
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get(subsegment, side)
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for subsegment in segment['segments']
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]
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return {
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'name': segment.get('name'),
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'type': segment_type,
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'highlight_group': None,
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'divider_highlight_group': None,
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'before': None,
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'after': None,
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'contents_func': lambda pl, segment_info, parsed_segments, side: process_segment_lister(
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pl, segment_info, parsed_segments, side,
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patcher_args=args,
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subsegments=subsegments,
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lister=_contents_func,
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),
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'contents': None,
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'priority': None,
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'draw_soft_divider': None,
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'draw_hard_divider': None,
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'draw_inner_divider': None,
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'side': side,
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'exclude_modes': segment.get('exclude_modes', []),
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'include_modes': segment.get('include_modes', []),
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'width': None,
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'align': None,
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'startup': None,
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'shutdown': None,
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'mode': None,
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'_rendered_raw': '',
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'_rendered_hl': '',
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'_len': None,
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'_contents_len': None,
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'_space_left': 0,
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'_space_right': 0,
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}
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if segment_type == 'function':
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startup_func = get_attr_func(_contents_func, 'startup', args)
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shutdown_func = get_attr_func(_contents_func, 'shutdown', None)
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if hasattr(_contents_func, 'powerline_requires_filesystem_watcher'):
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create_watcher = lambda: create_file_watcher(pl, common_config['watcher'])
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args[str('create_watcher')] = create_watcher
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if hasattr(_contents_func, 'powerline_requires_segment_info'):
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contents_func = lambda pl, segment_info: _contents_func(pl=pl, segment_info=segment_info, **args)
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else:
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contents_func = lambda pl, segment_info: _contents_func(pl=pl, **args)
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else:
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startup_func = None
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shutdown_func = None
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contents_func = None
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return {
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'name': segment.get('name'),
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'type': segment_type,
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'highlight_group': highlight_group,
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'divider_highlight_group': None,
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'before': get_key(False, segment, module, 'before', ''),
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'after': get_key(False, segment, module, 'after', ''),
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'contents_func': contents_func,
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'contents': contents,
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'priority': segment.get('priority', None),
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'draw_hard_divider': segment.get('draw_hard_divider', True),
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'draw_soft_divider': segment.get('draw_soft_divider', True),
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'draw_inner_divider': segment.get('draw_inner_divider', False),
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'side': side,
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'exclude_modes': segment.get('exclude_modes', []),
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'include_modes': segment.get('include_modes', []),
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'width': segment.get('width'),
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'align': segment.get('align', 'l'),
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'startup': startup_func,
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'shutdown': shutdown_func,
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'mode': None,
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'_rendered_raw': '',
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'_rendered_hl': '',
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'_len': None,
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'_contents_len': None,
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'_space_left': 0,
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'_space_right': 0,
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}
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return get
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