def _check(self):
"""
Determine the necessary actions for the font,
returning a dictionary with boolean values
"""
# shortcut
r = self._actions
# download archive if
# - font not declared locally
# - remote is newer
# - archive is missing locally
r['download'] = False
if not Config.local():
r['download'] = True if (self._local_version == '0' or
self._remote_newer() or
not self._archive_present()) else False
# extract archive if
# - it (a new one) was downloaded
# - the archive is present but not the target font directory
r['extract'] = True if (r['download'] or
(self._archive_present() and not
self._font_dir_present())) else False
# the font is considered up to date if
# - it doesn't have to be downloaded or extracted
# - the font repo matches the links in the installation
if (r['download'] or r['extract']):
r['update_links'] = Config.lilypond_font_roots()
else:
r['update_links'] = []
for l in Config.lilypond_font_roots():
if not self._check_links(l):
r['update_links'].append(l)
self._up_to_date = False if (r['download'] or
r['extract'] or
r['update_links']) else True
