def discover_existing_apps():
"""Search through the configured XDG datadirs looking for .desktop files created by L{add_to_menu}.
@return: a map from application URIs to .desktop filenames"""
already_installed = {}
for d in basedir.load_data_paths('applications'):
for desktop_file in os.listdir(d):
if desktop_file.startswith('zeroinstall-') and desktop_file.endswith('.desktop'):
full = os.path.join(d, desktop_file)
try:
with open(full, 'rt') as stream:
for line in stream:
line = line.strip()
if line.startswith('Exec=0launch '):
bits = line.split(' -- ', 1)
if ' ' in bits[0]:
uri = bits[0].split(' ', 1)[1] # 0launch URI -- %u
else:
uri = bits[1].split(' ', 1)[0].strip() # 0launch -- URI %u
already_installed[uri] = full
break
else:
logger.info(_("Failed to find Exec line in %s"), full)
except Exception as ex:
logger.warn(_("Failed to load .desktop file %(filename)s: %(exceptions"), {'filename': full, 'exception': ex})
return already_installed
def discover_existing_apps():
"""Search through the configured XDG datadirs looking for .desktop files created by L{add_to_menu}.
@return: a map from application URIs to .desktop filenames"""
already_installed = {}
for d in basedir.load_data_paths('applications'):
for desktop_file in os.listdir(d):
if desktop_file.startswith(
'zeroinstall-') and desktop_file.endswith('.desktop'):
full = os.path.join(d, desktop_file)
try:
with open(full, 'rt') as stream:
for line in stream:
line = line.strip()
if line.startswith('Exec=0launch '):
bits = line.split(' -- ', 1)
if ' ' in bits[0]:
uri = bits[0].split(
' ', 1)[1] # 0launch URI -- %u
else:
uri = bits[1].split(
' ', 1)[0].strip() # 0launch -- URI %u
already_installed[uri] = full
break
else:
logger.info(_("Failed to find Exec line in %s"),
full)
except Exception as ex:
logger.warn(
_("Failed to load .desktop file %(filename)s: %(exceptions"
), {
'filename': full,
'exception': ex
})
return already_installed
def update_from_cache(interface, iface_cache=None):
"""Read a cached interface and any native feeds or user overrides.
@param interface: the interface object to update
@type interface: L{model.Interface}
@return: True if cached version and user overrides loaded OK.
False if upstream not cached. Local interfaces (starting with /) are
always considered to be cached, although they are not actually stored in the cache.
Internal: use L{iface_cache.IfaceCache.get_interface} instread.
@rtype: bool"""
interface.reset()
if iface_cache is None:
import warnings
warnings.warn("iface_cache should be specified", DeprecationWarning, 2)
from zeroinstall.injector import policy
iface_cache = policy.get_deprecated_singleton_config().iface_cache
# Add the distribution package manager's version, if any
path = basedir.load_first_data(config_site, 'native_feeds',
model._pretty_escape(interface.uri))
if path:
# Resolve any symlinks
logger.info(_("Adding native packager feed '%s'"), path)
interface.extra_feeds.append(Feed(os.path.realpath(path), None, False))
# Add locally-compiled binaries, if any
escaped_uri = model.escape_interface_uri(interface.uri)
known_site_feeds = set()
for path in basedir.load_data_paths(config_site, 'site-packages',
*escaped_uri):
try:
_add_site_packages(interface, path, known_site_feeds)
except Exception as ex:
logger.warn("Error loading site packages from {path}: {ex}".format(
path=path, ex=ex))
update_user_overrides(interface, known_site_feeds)
main_feed = iface_cache.get_feed(interface.uri, force=True)
if main_feed:
update_user_feed_overrides(main_feed)
return main_feed is not None
def update_from_cache(interface, iface_cache=None):
"""Read a cached interface and any native feeds or user overrides.
@param interface: the interface object to update
@type interface: L{model.Interface}
@return: True if cached version and user overrides loaded OK.
False if upstream not cached. Local interfaces (starting with /) are
always considered to be cached, although they are not actually stored in the cache.
Internal: use L{iface_cache.IfaceCache.get_interface} instread.
@rtype: bool"""
interface.reset()
if iface_cache is None:
import warnings
warnings.warn("iface_cache should be specified", DeprecationWarning, 2)
from zeroinstall.injector import policy
iface_cache = policy.get_deprecated_singleton_config().iface_cache
# Add the distribution package manager's version, if any
path = basedir.load_first_data(config_site, "native_feeds", model._pretty_escape(interface.uri))
if path:
# Resolve any symlinks
logger.info(_("Adding native packager feed '%s'"), path)
interface.extra_feeds.append(Feed(os.path.realpath(path), None, False))
# Add locally-compiled binaries, if any
escaped_uri = model.escape_interface_uri(interface.uri)
known_site_feeds = set()
for path in basedir.load_data_paths(config_site, "site-packages", *escaped_uri):
try:
_add_site_packages(interface, path, known_site_feeds)
except Exception as ex:
logger.warn("Error loading site packages from {path}: {ex}".format(path=path, ex=ex))
update_user_overrides(interface, known_site_feeds)
main_feed = iface_cache.get_feed(interface.uri, force=True)
if main_feed:
update_user_feed_overrides(main_feed)
return main_feed is not None