mirror of https://github.com/cheat/cheat.git
Merge branch 'TomasKorbar-changes'
This commit is contained in:
Chris Lane
commit
87448c49fa
27
bin/cheat
27
bin/cheat
|
|
@ -36,29 +36,24 @@ Examples:
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|||
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# require the dependencies
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from __future__ import print_function
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from cheat import sheets, sheet
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from cheat.utils import colorize
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from cheat.utils import die
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from cheat.sheets import Sheets
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from cheat.sheet import Sheet
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from cheat.utils import Utils
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from cheat.configuration import Configuration
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from docopt import docopt
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import os
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if __name__ == '__main__':
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# validate CHEAT_HIGHLIGHT values if set
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colors = [
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'grey' , 'red' , 'green' , 'yellow' ,
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'blue' , 'magenta' , 'cyan' , 'white' ,
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]
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if (
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os.environ.get('CHEAT_HIGHLIGHT') and
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os.environ.get('CHEAT_HIGHLIGHT') not in colors
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):
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die("%s %s" %('CHEAT_HIGHLIGHT must be one of:', colors))
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# parse the command-line options
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options = docopt(__doc__, version='cheat 2.3.1')
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config = Configuration()
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sheets = Sheets(config)
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utils = Utils(config)
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sheet = Sheet(sheets, utils)
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# list directories
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if options['--directories']:
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print("\n".join(sheets.paths()))
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@ -73,8 +68,8 @@ if __name__ == '__main__':
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# search among the cheatsheets
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elif options['--search']:
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print(colorize(sheets.search(options['<keyword>'])), end="")
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print(utils.colorize(sheets.search(options['<keyword>'])), end="")
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# print the cheatsheet
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else:
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print(colorize(sheet.read(options['<cheatsheet>'])), end="")
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print(utils.colorize(sheet.read(options['<cheatsheet>'])), end="")
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@ -1,3 +1,4 @@
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from . import sheet
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from . import sheets
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from . import utils
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from . import configuration
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@ -1,4 +0,0 @@
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import os
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def sheets_dir():
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return os.path.split(__file__)
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@ -0,0 +1,134 @@
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import os
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from cheat.utils import Utils
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import json
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class Configuration:
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def __init__(self):
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self._get_global_conf_file_path()
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self._get_local_conf_file_path()
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self._saved_configuration = self._get_configuration()
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def _get_configuration(self):
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# get options from config files and environment vairables
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merged_config = {}
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try:
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merged_config.update(
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self._read_configuration_file(self.glob_config_path)
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)
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except Exception as e:
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Utils.warn('error while parsing global configuration Reason: '
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+ e.message
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)
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try:
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merged_config.update(
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self._read_configuration_file(self.local_config_path)
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)
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except Exception as e:
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Utils.warn('error while parsing user configuration Reason: '
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+ e.message
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)
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merged_config.update(self._read_env_vars_config())
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self._check_configuration(merged_config)
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return merged_config
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def _read_configuration_file(self, path):
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# Reads configuration file and returns list of set variables
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read_config = {}
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if (os.path.isfile(path)):
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with open(path) as config_file:
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read_config.update(json.load(config_file))
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return read_config
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def _read_env_vars_config(self):
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read_config = {}
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# NOTE: These variables are left here because of backwards
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# compatibility and are supported only as env vars but not in
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# configuration file
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if (os.environ.get('VISUAL')):
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read_config['EDITOR'] = os.environ.get('VISUAL')
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# variables supported both in environment and configuration file
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# NOTE: Variables without CHEAT_ prefix are legacy
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# key is variable name and value is its legacy_alias
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# if variable has no legacy alias then set to None
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variables = {'CHEAT_DEFAULT_DIR': 'DEFAULT_CHEAT_DIR',
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'CHEAT_PATH': 'CHEATPATH',
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'CHEAT_COLORS': 'CHEATCOLORS',
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'CHEAT_EDITOR': 'EDITOR',
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'CHEAT_HIGHLIGHT': None
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}
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for (k, v) in variables.items():
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self._read_env_var(read_config, k, v)
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return read_config
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def _check_configuration(self, config):
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""" Check values in config and warn user or die """
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# validate CHEAT_HIGHLIGHT values if set
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colors = [
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'grey', 'red', 'green', 'yellow',
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'blue', 'magenta', 'cyan', 'white'
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]
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if (
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config.get('CHEAT_HIGHLIGHT') and
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config.get('CHEAT_HIGHLIGHT') not in colors
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):
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Utils.die("%s %s" % ('CHEAT_HIGHLIGHT must be one of:', colors))
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def _read_env_var(self, current_config, key, alias=None):
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if os.environ.get(key) is not None:
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current_config[key] = os.environ.get(key)
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return
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elif alias is not None and os.environ.get(alias) is not None:
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current_config[key] = os.environ.get(alias)
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return
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def _get_global_conf_file_path(self):
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self.glob_config_path = (os.environ.get('CHEAT_GLOBAL_CONF_PATH')
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or '/etc/cheat')
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def _get_local_conf_file_path(self):
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path = (os.environ.get('CHEAT_LOCAL_CONF_PATH')
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or os.path.expanduser('~/.config/cheat/cheat'))
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self.local_config_path = path
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def _choose_value(self, primary_value_name, secondary_value_name):
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""" Return primary or secondary value in saved_configuration
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If primary value is in configuration then return it. If it is not
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then return secondary. In the absence of both values return None
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"""
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primary_value = self._saved_configuration.get(primary_value_name)
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secondary_value = self._saved_configuration.get(secondary_value_name)
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if primary_value is not None:
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return primary_value
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else:
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return secondary_value
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def get_default_cheat_dir(self):
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return self._choose_value('CHEAT_DEFAULT_DIR', 'DEFAULT_CHEAT_DIR')
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def get_cheatpath(self):
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return self._choose_value('CHEAT_PATH', 'CHEATPATH')
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def get_cheatcolors(self):
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return self._choose_value('CHEAT_COLORS', 'CHEATCOLORS')
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def get_editor(self):
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return self._choose_value('CHEAT_EDITOR', 'EDITOR')
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def get_highlight(self):
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return self._saved_configuration.get('CHEAT_HIGHLIGHT')
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@ -1,76 +1,78 @@
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import os
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import shutil
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from cheat import sheets
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from cheat.utils import die, open_with_editor
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from cheat.utils import Utils
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def copy(current_sheet_path, new_sheet_path):
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class Sheet:
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def __init__(self, sheets, utils):
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self._sheets = sheets
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self._utils = utils
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def copy(self, current_sheet_path, new_sheet_path):
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""" Copies a sheet to a new path """
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# attempt to copy the sheet to DEFAULT_CHEAT_DIR
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try:
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shutil.copy(current_sheet_path, new_sheet_path)
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# fail gracefully if the cheatsheet cannot be copied. This can happen if
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# DEFAULT_CHEAT_DIR does not exist
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# fail gracefully if the cheatsheet cannot be copied. This can happen
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# if DEFAULT_CHEAT_DIR does not exist
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except IOError:
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die('Could not copy cheatsheet for editing.')
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Utils.die('Could not copy cheatsheet for editing.')
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def create_or_edit(sheet):
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def create_or_edit(self, sheet):
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""" Creates or edits a cheatsheet """
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# if the cheatsheet does not exist
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if not exists(sheet):
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create(sheet)
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if not self.exists(sheet):
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self.create(sheet)
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# if the cheatsheet exists but not in the default_path, copy it to the
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# default path before editing
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elif exists(sheet) and not exists_in_default_path(sheet):
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copy(path(sheet), os.path.join(sheets.default_path(), sheet))
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edit(sheet)
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elif self.exists(sheet) and not self.exists_in_default_path(sheet):
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self.copy(self.path(sheet),
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os.path.join(self._sheets.default_path(), sheet))
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self.edit(sheet)
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# if it exists and is in the default path, then just open it
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else:
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edit(sheet)
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self.edit(sheet)
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def create(sheet):
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def create(self, sheet):
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""" Creates a cheatsheet """
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new_sheet_path = os.path.join(sheets.default_path(), sheet)
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open_with_editor(new_sheet_path)
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new_sheet_path = os.path.join(self._sheets.default_path(), sheet)
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self._utils.open_with_editor(new_sheet_path)
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def edit(sheet):
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def edit(self, sheet):
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""" Opens a cheatsheet for editing """
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open_with_editor(path(sheet))
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self._utils.open_with_editor(self.path(sheet))
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def exists(sheet):
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def exists(self, sheet):
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""" Predicate that returns true if the sheet exists """
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return sheet in sheets.get() and os.access(path(sheet), os.R_OK)
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return (sheet in self._sheets.get() and
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os.access(self.path(sheet), os.R_OK))
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def exists_in_default_path(sheet):
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def exists_in_default_path(self, sheet):
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""" Predicate that returns true if the sheet exists in default_path"""
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default_path_sheet = os.path.join(sheets.default_path(), sheet)
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return sheet in sheets.get() and os.access(default_path_sheet, os.R_OK)
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default_path_sheet = os.path.join(self._sheets.default_path(), sheet)
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return (sheet in self._sheets.get() and
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os.access(default_path_sheet, os.R_OK))
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def is_writable(sheet):
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def is_writable(self, sheet):
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||||
""" Predicate that returns true if the sheet is writeable """
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return sheet in sheets.get() and os.access(path(sheet), os.W_OK)
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||||
return (sheet in self._sheets.get() and
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os.access(self.path(sheet), os.W_OK))
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|
||||
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def path(sheet):
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def path(self, sheet):
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""" Returns a sheet's filesystem path """
|
||||
return sheets.get()[sheet]
|
||||
return self._sheets.get()[sheet]
|
||||
|
||||
|
||||
def read(sheet):
|
||||
def read(self, sheet):
|
||||
""" Returns the contents of the cheatsheet as a String """
|
||||
if not exists(sheet):
|
||||
die('No cheatsheet found for ' + sheet)
|
||||
if not self.exists(sheet):
|
||||
Utils.die('No cheatsheet found for ' + sheet)
|
||||
|
||||
with open(path(sheet)) as cheatfile:
|
||||
with open(self.path(sheet)) as cheatfile:
|
||||
return cheatfile.read()
|
||||
|
|
|
|||
|
|
@ -1,15 +1,23 @@
|
|||
import os
|
||||
|
||||
from cheat import cheatsheets
|
||||
from cheat.utils import die
|
||||
from cheat.utils import highlight
|
||||
from cheat.utils import Utils
|
||||
|
||||
def default_path():
|
||||
|
||||
class Sheets:
|
||||
|
||||
def __init__(self, config):
|
||||
self._default_cheat_dir = config.get_default_cheat_dir()
|
||||
self._cheatpath = config.get_cheatpath()
|
||||
self._utils = Utils(config)
|
||||
|
||||
def default_path(self):
|
||||
""" Returns the default cheatsheet path """
|
||||
|
||||
# determine the default cheatsheet dir
|
||||
default_sheets_dir = os.environ.get('DEFAULT_CHEAT_DIR') or os.path.join('~', '.cheat')
|
||||
default_sheets_dir = os.path.expanduser(os.path.expandvars(default_sheets_dir))
|
||||
default_sheets_dir = (self._default_cheat_dir or
|
||||
os.path.join('~', '.cheat'))
|
||||
default_sheets_dir = os.path.expanduser(
|
||||
os.path.expandvars(default_sheets_dir))
|
||||
|
||||
# create the DEFAULT_CHEAT_DIR if it does not exist
|
||||
if not os.path.isdir(default_sheets_dir):
|
||||
|
|
@ -19,24 +27,27 @@ def default_path():
|
|||
os.mkdir(default_sheets_dir)
|
||||
|
||||
except OSError:
|
||||
die('Could not create DEFAULT_CHEAT_DIR')
|
||||
Utils.die('Could not create DEFAULT_CHEAT_DIR')
|
||||
|
||||
# assert that the DEFAULT_CHEAT_DIR is readable and writable
|
||||
if not os.access(default_sheets_dir, os.R_OK):
|
||||
die('The DEFAULT_CHEAT_DIR (' + default_sheets_dir +') is not readable.')
|
||||
Utils.die('The DEFAULT_CHEAT_DIR ('
|
||||
+ default_sheets_dir
|
||||
+ ') is not readable.')
|
||||
if not os.access(default_sheets_dir, os.W_OK):
|
||||
die('The DEFAULT_CHEAT_DIR (' + default_sheets_dir +') is not writable.')
|
||||
Utils.die('The DEFAULT_CHEAT_DIR ('
|
||||
+ default_sheets_dir
|
||||
+ ') is not writable.')
|
||||
|
||||
# return the default dir
|
||||
return default_sheets_dir
|
||||
|
||||
|
||||
def get():
|
||||
def get(self):
|
||||
""" Assembles a dictionary of cheatsheets as name => file-path """
|
||||
cheats = {}
|
||||
|
||||
# otherwise, scan the filesystem
|
||||
for cheat_dir in reversed(paths()):
|
||||
for cheat_dir in reversed(self.paths()):
|
||||
cheats.update(
|
||||
dict([
|
||||
(cheat, os.path.join(cheat_dir, cheat))
|
||||
|
|
@ -48,45 +59,42 @@ def get():
|
|||
|
||||
return cheats
|
||||
|
||||
|
||||
def paths():
|
||||
def paths(self):
|
||||
""" Assembles a list of directories containing cheatsheets """
|
||||
sheet_paths = [
|
||||
default_path(),
|
||||
cheatsheets.sheets_dir()[0],
|
||||
self.default_path(),
|
||||
'/usr/share/cheat',
|
||||
]
|
||||
|
||||
# merge the CHEATPATH paths into the sheet_paths
|
||||
if 'CHEATPATH' in os.environ and os.environ['CHEATPATH']:
|
||||
for path in os.environ['CHEATPATH'].split(os.pathsep):
|
||||
if self._cheatpath:
|
||||
for path in self._cheatpath.split(os.pathsep):
|
||||
if os.path.isdir(path):
|
||||
sheet_paths.append(path)
|
||||
|
||||
if not sheet_paths:
|
||||
die('The DEFAULT_CHEAT_DIR dir does not exist or the CHEATPATH is not set.')
|
||||
Utils.die('The DEFAULT_CHEAT_DIR dir does not exist '
|
||||
+ 'or the CHEATPATH is not set.')
|
||||
|
||||
return sheet_paths
|
||||
|
||||
|
||||
def list():
|
||||
def list(self):
|
||||
""" Lists the available cheatsheets """
|
||||
sheet_list = ''
|
||||
pad_length = max([len(x) for x in get().keys()]) + 4
|
||||
for sheet in sorted(get().items()):
|
||||
pad_length = max([len(x) for x in self.get().keys()]) + 4
|
||||
for sheet in sorted(self.get().items()):
|
||||
sheet_list += sheet[0].ljust(pad_length) + sheet[1] + "\n"
|
||||
return sheet_list
|
||||
|
||||
|
||||
def search(term):
|
||||
def search(self, term):
|
||||
""" Searches all cheatsheets for the specified term """
|
||||
result = ''
|
||||
lowered_term = term.lower()
|
||||
|
||||
for cheatsheet in sorted(get().items()):
|
||||
for cheatsheet in sorted(self.get().items()):
|
||||
match = ''
|
||||
for line in open(cheatsheet[1]):
|
||||
if term in line:
|
||||
match += ' ' + highlight(term, line)
|
||||
match += ' ' + self._utils.highlight(term, line)
|
||||
|
||||
if match != '':
|
||||
result += cheatsheet[0] + ":\n" + match + "\n"
|
||||
|
|
|
|||
|
|
@ -3,11 +3,19 @@ import os
|
|||
import subprocess
|
||||
import sys
|
||||
|
||||
def highlight(needle, haystack):
|
||||
|
||||
class Utils:
|
||||
|
||||
def __init__(self, config):
|
||||
self._displaycolors = config.get_cheatcolors()
|
||||
self._editor_executable = config.get_editor()
|
||||
self._highlight_color = config.get_highlight()
|
||||
|
||||
def highlight(self, needle, haystack):
|
||||
""" Highlights a search term matched within a line """
|
||||
|
||||
# if a highlight color is not configured, exit early
|
||||
if not 'CHEAT_HIGHLIGHT' in os.environ:
|
||||
if not self._highlight_color:
|
||||
return haystack
|
||||
|
||||
# otherwise, attempt to import the termcolor library
|
||||
|
|
@ -19,14 +27,17 @@ def highlight(needle, haystack):
|
|||
return haystack
|
||||
|
||||
# if the import succeeds, colorize the needle in haystack
|
||||
return haystack.replace(needle, colored(needle, os.environ.get('CHEAT_HIGHLIGHT')));
|
||||
return haystack.replace(needle, colored(needle, self._highlight_color))
|
||||
|
||||
|
||||
def colorize(sheet_content):
|
||||
def colorize(self, sheet_content):
|
||||
""" Colorizes cheatsheet content if so configured """
|
||||
|
||||
# cover all possible positive values to be safe
|
||||
positive_values = ["True", "true", "1", 1, True]
|
||||
|
||||
# only colorize if configured to do so, and if stdout is a tty
|
||||
if os.environ.get('CHEATCOLORS') != 'true' or not sys.stdout.isatty():
|
||||
if (self._displaycolors not in positive_values or
|
||||
not sys.stdout.isatty()):
|
||||
return sheet_content
|
||||
|
||||
# don't attempt to colorize an empty cheatsheet
|
||||
|
|
@ -57,41 +68,33 @@ def colorize(sheet_content):
|
|||
|
||||
return highlight(sheet_content, lexer, TerminalFormatter())
|
||||
|
||||
|
||||
def die(message):
|
||||
@staticmethod
|
||||
def die(message):
|
||||
""" Prints a message to stderr and then terminates """
|
||||
warn(message)
|
||||
Utils.warn(message)
|
||||
exit(1)
|
||||
|
||||
|
||||
def editor():
|
||||
def editor(self):
|
||||
""" Determines the user's preferred editor """
|
||||
|
||||
# determine which editor to use
|
||||
editor = os.environ.get('CHEAT_EDITOR') \
|
||||
or os.environ.get('VISUAL') \
|
||||
or os.environ.get('EDITOR') \
|
||||
or False
|
||||
|
||||
# assert that the editor is set
|
||||
if editor == False:
|
||||
die(
|
||||
if (not self._editor_executable):
|
||||
Utils.die(
|
||||
'You must set a CHEAT_EDITOR, VISUAL, or EDITOR environment '
|
||||
'variable in order to create/edit a cheatsheet.'
|
||||
'variable or setting in order to create/edit a cheatsheet.'
|
||||
)
|
||||
|
||||
return editor
|
||||
return self._editor_executable
|
||||
|
||||
|
||||
def open_with_editor(filepath):
|
||||
""" Open `filepath` using the EDITOR specified by the environment variables """
|
||||
editor_cmd = editor().split()
|
||||
def open_with_editor(self, filepath):
|
||||
""" Open `filepath` using the EDITOR specified by the env variables """
|
||||
editor_cmd = self.editor().split()
|
||||
try:
|
||||
subprocess.call(editor_cmd + [filepath])
|
||||
except OSError:
|
||||
die('Could not launch ' + editor())
|
||||
Utils.die('Could not launch ' + self.editor())
|
||||
|
||||
|
||||
def warn(message):
|
||||
@staticmethod
|
||||
def warn(message):
|
||||
""" Prints a message to stderr """
|
||||
print((message), file=sys.stderr)
|
||||
|
|
|
|||
|
|
@ -0,0 +1 @@
|
|||
{"CHEAT_COLORS":true,"CHEAT_EDITOR":"vi"}
|
||||
14
setup.py
14
setup.py
|
|
@ -1,6 +1,10 @@
|
|||
from distutils.core import setup
|
||||
import os
|
||||
|
||||
cheat_files = []
|
||||
for f in os.listdir('cheat/cheatsheets/'):
|
||||
cheat_files.append(os.path.join('cheat/cheatsheets/',f))
|
||||
|
||||
setup(
|
||||
name = 'cheat',
|
||||
version = '2.3.1',
|
||||
|
|
@ -14,15 +18,15 @@ setup(
|
|||
url = 'https://github.com/chrisallenlane/cheat',
|
||||
packages = [
|
||||
'cheat',
|
||||
'cheat.cheatsheets',
|
||||
'cheat.test',
|
||||
],
|
||||
package_data = {
|
||||
'cheat.cheatsheets': [f for f in os.listdir('cheat/cheatsheets') if '.' not in f]
|
||||
},
|
||||
scripts = ['bin/cheat'],
|
||||
install_requires = [
|
||||
'docopt >= 0.6.1',
|
||||
'pygments >= 1.6.0',
|
||||
]
|
||||
],
|
||||
data_files = [
|
||||
('/usr/share/cheat', cheat_files),
|
||||
('/etc', ['config/cheat']),
|
||||
],
|
||||
)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,86 @@
|
|||
import unittest2
|
||||
import os
|
||||
import shutil
|
||||
from cheat.configuration import Configuration
|
||||
|
||||
|
||||
def _set_loc_conf(key, value):
|
||||
_path = os.path.dirname(os.path.abspath(__file__)) + '/home/.config/cheat/cheat'
|
||||
if value == None:
|
||||
os.remove(_path)
|
||||
else:
|
||||
if not os.path.exists(os.path.dirname(_path)):
|
||||
os.makedirs(os.path.dirname(_path))
|
||||
f = open(_path,"w+")
|
||||
f.write('{"'+ key +'":"'+ value +'"}')
|
||||
f.close()
|
||||
|
||||
|
||||
def _set_glob_conf(key, value):
|
||||
_path = os.path.dirname(os.path.abspath(__file__))+ "/etc/cheat"
|
||||
if value == None:
|
||||
os.remove(_path)
|
||||
else:
|
||||
if not os.path.exists(os.path.dirname(_path)):
|
||||
os.mkdir(os.path.dirname(_path))
|
||||
f = open(_path,"w+")
|
||||
f.write('{"'+ key +'":"'+ value +'"}' )
|
||||
f.close()
|
||||
|
||||
|
||||
def _set_env_var(key, value):
|
||||
if value == None:
|
||||
del os.environ[key]
|
||||
else:
|
||||
os.environ[key] = value
|
||||
|
||||
|
||||
def _configuration_key_test(TestConfiguration, key,values, conf_get_method):
|
||||
for glob_conf in values:
|
||||
_set_glob_conf(key,glob_conf)
|
||||
for loc_conf in values:
|
||||
_set_loc_conf(key,loc_conf)
|
||||
for env_conf in values:
|
||||
_set_env_var(key,env_conf)
|
||||
if env_conf:
|
||||
TestConfiguration.assertEqual(conf_get_method(Configuration()),env_conf)
|
||||
elif loc_conf:
|
||||
TestConfiguration.assertEqual(conf_get_method(Configuration()),loc_conf)
|
||||
elif glob_conf:
|
||||
TestConfiguration.assertEqual(conf_get_method(Configuration()),glob_conf)
|
||||
else:
|
||||
TestConfiguration.assertEqual(conf_get_method(Configuration()),None)
|
||||
|
||||
|
||||
class ConfigurationTestCase(unittest2.TestCase):
|
||||
|
||||
|
||||
def setUp(self):
|
||||
os.environ['CHEAT_GLOBAL_CONF_PATH'] = os.path.dirname(os.path.abspath(__file__)) \
|
||||
+ '/etc/cheat'
|
||||
os.environ['CHEAT_LOCAL_CONF_PATH'] = os.path.dirname(os.path.abspath(__file__)) \
|
||||
+ '/home/.config/cheat/cheat'
|
||||
|
||||
|
||||
def test_get_editor(self):
|
||||
_configuration_key_test(self,"EDITOR",["nano","vim","gedit",None],
|
||||
Configuration.get_editor)
|
||||
|
||||
|
||||
def test_get_cheatcolors(self):
|
||||
_configuration_key_test(self,"CHEATCOLORS",["true",None],
|
||||
Configuration.get_cheatcolors)
|
||||
|
||||
|
||||
def test_get_cheatpath(self):
|
||||
_configuration_key_test(self,"CHEATPATH",["/etc/myglobalcheats",
|
||||
"/etc/anotherglobalcheats","/rootcheats",None],Configuration.get_cheatpath)
|
||||
|
||||
|
||||
def test_get_defaultcheatdir(self):
|
||||
_configuration_key_test(self,"DEFAULT_CHEAT_DIR",["/etc/myglobalcheats",
|
||||
"/etc/anotherglobalcheats","/rootcheats",None],Configuration.get_default_cheat_dir)
|
||||
|
||||
def tearDown(self):
|
||||
shutil.rmtree(os.path.dirname(os.path.abspath(__file__)) +'/etc')
|
||||
shutil.rmtree(os.path.dirname(os.path.abspath(__file__)) +'/home')
|
||||
Loading…
Reference in New Issue