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Refactored (8)

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Refactored `Sheet` class:

- Removed unnecessary indirection and extraneous methods
- Renamed some methods to conform to Pythonic conventions
- Renamed the `create_or_edit` method to `edit` to be consistent with
  subcommand name (`--edit`)
This commit is contained in:
Chris Lane 2019-02-01 11:23:38 -05:00
parent e2b5728283
commit 5793c1845a
2 changed files with 33 additions and 51 deletions
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2
bin/cheat
View File

@ -93,7 +93,7 @@ if __name__ == '__main__':
# create/edit cheatsheet
elif options['--edit']:
sheet.create_or_edit(options['<cheatsheet>'])
sheet.edit(options['<cheatsheet>'])
# search among the cheatsheets
elif options['--search']:

82
cheat/sheet.py
View File

@ -12,69 +12,51 @@ class Sheet:
self._editor = Editor(config)
self._sheets = sheets
def copy(self, current_sheet_path, new_sheet_path):
""" Copies a sheet to a new path """
# attempt to copy the sheet to CHEAT_DEFAULT_DIR
try:
shutil.copy(current_sheet_path, new_sheet_path)
# fail gracefully if the cheatsheet cannot be copied. This can happen
# if CHEAT_DEFAULT_DIR does not exist
except IOError:
Utils.die('Could not copy cheatsheet for editing.')
def create_or_edit(self, sheet):
""" Creates or edits a cheatsheet """
# if the cheatsheet does not exist
if not self.exists(sheet):
self.create(sheet)
# if the cheatsheet exists but not in the default_path, copy it to the
# default path before editing
elif self.exists(sheet) and not self.exists_in_default_path(sheet):
self.copy(self.path(sheet),
os.path.join(self._config.cheat_default_dir, sheet))
self.edit(sheet)
# if it exists and is in the default path, then just open it
else:
self.edit(sheet)
def create(self, sheet):
""" Creates a cheatsheet """
new_sheet_path = os.path.join(self._config.cheat_default_dir, sheet)
self._editor.open(new_sheet_path)
def edit(self, sheet):
""" Opens a cheatsheet for editing """
self._editor.open(self.path(sheet))
def exists(self, sheet):
def _exists(self, sheet):
""" Predicate that returns true if the sheet exists """
return (sheet in self._sheets.get() and
os.access(self.path(sheet), os.R_OK))
os.access(self._path(sheet), os.R_OK))
def exists_in_default_path(self, sheet):
def _exists_in_default_path(self, sheet):
""" Predicate that returns true if the sheet exists in default_path"""
default_path_sheet = os.path.join(self._config.cheat_default_dir, sheet)
return (sheet in self._sheets.get() and
os.access(default_path_sheet, os.R_OK))
def is_writable(self, sheet):
""" Predicate that returns true if the sheet is writeable """
return (sheet in self._sheets.get() and
os.access(self.path(sheet), os.W_OK))
def path(self, sheet):
def _path(self, sheet):
""" Returns a sheet's filesystem path """
return self._sheets.get()[sheet]
def edit(self, sheet):
""" Creates or edits a cheatsheet """
# if the cheatsheet does not exist
if not self._exists(sheet):
new_sheet_path = os.path.join(self._config.cheat_default_dir, sheet)
self._editor.open(new_sheet_path)
# if the cheatsheet exists but not in the default_path, copy it to the
# default path before editing
elif self._exists(sheet) and not self._exists_in_default_path(sheet):
try:
shutil.copy(self._path(sheet),
os.path.join(self._config.cheat_default_dir, sheet))
# fail gracefully if the cheatsheet cannot be copied. This can happen
# if CHEAT_DEFAULT_DIR does not exist
except IOError:
Utils.die('Could not copy cheatsheet for editing.')
self._editor.open(self._path(sheet))
# if it exists and is in the default path, then just open it
else:
self._editor.open(self._path(sheet))
def read(self, sheet):
""" Returns the contents of the cheatsheet as a String """
if not self.exists(sheet):
if not self._exists(sheet):
Utils.die('No cheatsheet found for ' + sheet)
with io.open(self.path(sheet), encoding='utf-8') as cheatfile:
with io.open(self._path(sheet), encoding='utf-8') as cheatfile:
return cheatfile.read()