def process_depends(item, local_feed_dir):
"""Internal"""
# Note: also called from selections
# Note: used by 0compile
attrs = item.attrs
dep_iface = item.getAttribute('interface')
if not dep_iface:
raise InvalidInterface(_("Missing 'interface' on <%s>") % item.name)
if dep_iface.startswith('.'):
if local_feed_dir:
dep_iface = os.path.abspath(os.path.join(local_feed_dir, dep_iface))
# (updates the element too, in case we write it out again)
attrs['interface'] = dep_iface
else:
raise InvalidInterface(_('Relative interface URI "%s" in non-local feed') % dep_iface)
if item.name == 'restricts':
dependency = InterfaceRestriction(dep_iface, element = item)
else:
dependency = InterfaceDependency(dep_iface, element = item)
version = item.getAttribute('version')
if version:
try:
r = VersionExpressionRestriction(version)
except SafeException as ex:
msg = "Can't parse version restriction '{version}': {error}".format(version = version, error = ex)
logger.warning(msg)
r = ImpossibleRestriction(msg)
dependency.restrictions.append(r)
distro = item.getAttribute('distribution')
if distro:
dependency.restrictions.append(DistributionRestriction(distro))
for e in item.childNodes:
if e.uri != XMLNS_IFACE: continue
if e.name in binding_names:
dependency.bindings.append(process_binding(e))
elif e.name == 'version':
dependency.restrictions.append(
VersionRangeRestriction(not_before = parse_version(e.getAttribute('not-before')),
before = parse_version(e.getAttribute('before'))))
return dependency
def process_depends(item, local_feed_dir):
"""Internal"""
# Note: also called from selections
# Note: used by 0compile
attrs = item.attrs
dep_iface = item.getAttribute('interface')
if not dep_iface:
raise InvalidInterface(_("Missing 'interface' on <%s>") % item.name)
if dep_iface.startswith('.'):
if local_feed_dir:
dep_iface = os.path.abspath(os.path.join(local_feed_dir, dep_iface))
# (updates the element too, in case we write it out again)
attrs['interface'] = dep_iface
else:
raise InvalidInterface(_('Relative interface URI "%s" in non-local feed') % dep_iface)
if item.name == 'restricts':
dependency = InterfaceRestriction(dep_iface, element = item)
else:
dependency = InterfaceDependency(dep_iface, element = item)
version = item.getAttribute('version')
if version:
try:
r = VersionExpressionRestriction(version)
except SafeException as ex:
msg = "Can't parse version restriction '{version}': {error}".format(version = version, error = ex)
logger.warn(msg)
r = ImpossibleRestriction(msg)
dependency.restrictions.append(r)
for e in item.childNodes:
if e.uri != XMLNS_IFACE: continue
if e.name in binding_names:
dependency.bindings.append(process_binding(e))
elif e.name == 'version':
dependency.restrictions.append(
VersionRangeRestriction(not_before = parse_version(e.getAttribute('not-before')),
before = parse_version(e.getAttribute('before'))))
return dependency
def __init__(self, feed_element, local_path = None):
"""Create a feed object from a DOM.
@param feed_element: the root element of a feed file
@type feed_element: L{qdom.Element}
@param local_path: the pathname of this local feed, or None for remote feeds
@type local_path: str | None"""
self.local_path = local_path
self.implementations = {}
self.name = None
self.summaries = {} # { lang: str }
self.first_summary = None
self.last_modified = None
self.feeds = []
self.metadata = []
self.feed_element = feed_element
if feed_element is None:
return # XXX subclass?
if feed_element.name not in ('interface', 'feed'):
raise SafeException("Root element should be <interface>, not <%s>" % feed_element.name)
assert feed_element.uri == XMLNS_IFACE, "Wrong namespace on root element: %s" % feed_element.uri
if local_path:
self.url = local_path
else:
assert local_path is None
self.url = feed_element.getAttribute('uri')
if not self.url:
raise InvalidInterface(_("<interface> uri attribute missing"))
min_injector_version = feed_element.getAttribute('min-injector-version')
if min_injector_version:
if parse_version(min_injector_version) > parse_version(version):
raise InvalidInterface(_("This feed requires version %(min_version)s or later of "
"Zero Install, but I am only version %(version)s. "
"You can get a newer version from http://0install.net") %
{'min_version': min_injector_version, 'version': version})
for x in feed_element.childNodes:
if x.uri != XMLNS_IFACE:
self.metadata.append(x)
continue
if x.name == 'name':
self.name = x.content
elif x.name == 'description':
pass
elif x.name == 'summary':
if self.first_summary == None:
self.first_summary = x.content
self.summaries[x.attrs.get("http://www.w3.org/XML/1998/namespace lang", 'en')] = x.content
elif x.name == 'feed-for':
pass
elif x.name == 'feed':
pass
else:
self.metadata.append(x)
if not self.name:
raise InvalidInterface(_("Missing <name> in feed"))
if not self.summary:
raise InvalidInterface(_("Missing <summary> in feed"))
def __init__(self, feed_element, local_path = None, distro = None):
"""Create a feed object from a DOM.
@param feed_element: the root element of a feed file
@type feed_element: L{qdom.Element}
@param local_path: the pathname of this local feed, or None for remote feeds"""
self.local_path = local_path
self.implementations = {}
self.name = None
self.summaries = {} # { lang: str }
self.first_summary = None
self.descriptions = {} # { lang: str }
self.first_description = None
self.last_modified = None
self.feeds = []
self.feed_for = set()
self.metadata = []
self.last_checked = None
self._package_implementations = []
if distro is not None:
import warnings
warnings.warn("distro argument is now ignored", DeprecationWarning, 2)
if feed_element is None:
return # XXX subclass?
assert feed_element.name in ('interface', 'feed'), "Root element should be <interface>, not %s" % feed_element
assert feed_element.uri == XMLNS_IFACE, "Wrong namespace on root element: %s" % feed_element.uri
main = feed_element.getAttribute('main')
#if main: warn("Setting 'main' on the root element is deprecated. Put it on a <group> instead")
if local_path:
self.url = local_path
local_dir = os.path.dirname(local_path)
else:
assert local_path is None
self.url = feed_element.getAttribute('uri')
if not self.url:
raise InvalidInterface(_("<interface> uri attribute missing"))
local_dir = None # Can't have relative paths
min_injector_version = feed_element.getAttribute('min-injector-version')
if min_injector_version:
if parse_version(min_injector_version) > parse_version(version):
raise InvalidInterface(_("This feed requires version %(min_version)s or later of "
"Zero Install, but I am only version %(version)s. "
"You can get a newer version from http://0install.net") %
{'min_version': min_injector_version, 'version': version})
for x in feed_element.childNodes:
if x.uri != XMLNS_IFACE:
self.metadata.append(x)
continue
if x.name == 'name':
self.name = x.content
elif x.name == 'description':
if self.first_description == None:
self.first_description = x.content
self.descriptions[x.attrs.get("http://www.w3.org/XML/1998/namespace lang", 'en')] = x.content
elif x.name == 'summary':
if self.first_summary == None:
self.first_summary = x.content
self.summaries[x.attrs.get("http://www.w3.org/XML/1998/namespace lang", 'en')] = x.content
elif x.name == 'feed-for':
feed_iface = x.getAttribute('interface')
if not feed_iface:
raise InvalidInterface(_('Missing "interface" attribute in <feed-for>'))
self.feed_for.add(feed_iface)
# Bug report from a Debian/stable user that --feed gets the wrong value.
# Can't reproduce (even in a Debian/stable chroot), but add some logging here
# in case it happens again.
logger.debug(_("Is feed-for %s"), feed_iface)
elif x.name == 'feed':
feed_src = x.getAttribute('src')
if not feed_src:
raise InvalidInterface(_('Missing "src" attribute in <feed>'))
if feed_src.startswith('http:') or feed_src.startswith('https:') or local_path:
if feed_src.startswith('.'):
feed_src = os.path.abspath(os.path.join(local_dir, feed_src))
langs = x.getAttribute('langs')
if langs: langs = langs.replace('_', '-')
self.feeds.append(Feed(feed_src, x.getAttribute('arch'), False, langs = langs))
else:
raise InvalidInterface(_("Invalid feed URL '%s'") % feed_src)
else:
self.metadata.append(x)
if not self.name:
raise InvalidInterface(_("Missing <name> in feed"))
if not self.summary:
raise InvalidInterface(_("Missing <summary> in feed"))
def process_group(group, group_attrs, base_depends, base_bindings, base_commands):
for item in group.childNodes:
if item.uri != XMLNS_IFACE: continue
if item.name not in ('group', 'implementation', 'package-implementation'):
continue
# We've found a group or implementation. Scan for dependencies,
# bindings and commands. Doing this here means that:
# - We can share the code for groups and implementations here.
# - The order doesn't matter, because these get processed first.
# A side-effect is that the document root cannot contain
# these.
depends = base_depends[:]
bindings = base_bindings[:]
commands = base_commands.copy()
for attr, command in [('main', 'run'),
('self-test', 'test')]:
value = item.attrs.get(attr, None)
if value is not None:
commands[command] = Command(qdom.Element(XMLNS_IFACE, 'command', {'name': command, 'path': value}), None)
for child in item.childNodes:
if child.uri != XMLNS_IFACE: continue
if child.name in _dependency_names:
dep = process_depends(child, local_dir)
depends.append(dep)
elif child.name == 'command':
command_name = child.attrs.get('name', None)
if not command_name:
raise InvalidInterface('Missing name for <command>')
commands[command_name] = Command(child, local_dir)
elif child.name in binding_names:
bindings.append(process_binding(child))
compile_command = item.attrs.get('http://zero-install.sourceforge.net/2006/namespaces/0compile command')
if compile_command is not None:
commands['compile'] = Command(qdom.Element(XMLNS_IFACE, 'command', {'name': 'compile', 'shell-command': compile_command}), None)
item_attrs = _merge_attrs(group_attrs, item)
if item.name == 'group':
process_group(item, item_attrs, depends, bindings, commands)
elif item.name == 'implementation':
process_impl(item, item_attrs, depends, bindings, commands)
elif item.name == 'package-implementation':
self._package_implementations.append((item, item_attrs, depends))
else:
assert 0
def process_impl(item, item_attrs, depends, bindings, commands):
id = item.getAttribute('id')
if id is None:
raise InvalidInterface(_("Missing 'id' attribute on %s") % item)
local_path = item_attrs.get('local-path')
if local_dir and local_path:
abs_local_path = os.path.abspath(os.path.join(local_dir, local_path))
impl = ZeroInstallImplementation(self, id, abs_local_path)
elif local_dir and (id.startswith('/') or id.startswith('.')):
# For old feeds
id = os.path.abspath(os.path.join(local_dir, id))
impl = ZeroInstallImplementation(self, id, id)
else:
impl = ZeroInstallImplementation(self, id, None)
if '=' in id:
# In older feeds, the ID was the (single) digest
impl.digests.append(id)
if id in self.implementations:
logger.warn(_("Duplicate ID '%(id)s' in feed '%(feed)s'"), {'id': id, 'feed': self})
self.implementations[id] = impl
impl.metadata = item_attrs
try:
version_mod = item_attrs.get('version-modifier', None)
if version_mod:
item_attrs['version'] += version_mod
del item_attrs['version-modifier']
version = item_attrs['version']
except KeyError:
raise InvalidInterface(_("Missing version attribute"))
impl.version = parse_version(version)
impl.commands = commands
impl.released = item_attrs.get('released', None)
impl.langs = item_attrs.get('langs', '').replace('_', '-')
size = item.getAttribute('size')
if size:
impl.size = int(size)
impl.arch = item_attrs.get('arch', None)
try:
stability = stability_levels[str(item_attrs['stability'])]
except KeyError:
stab = str(item_attrs['stability'])
if stab != stab.lower():
raise InvalidInterface(_('Stability "%s" invalid - use lower case!') % item_attrs.stability)
raise InvalidInterface(_('Stability "%s" invalid') % item_attrs['stability'])
if stability >= preferred:
raise InvalidInterface(_("Upstream can't set stability to preferred!"))
impl.upstream_stability = stability
impl.bindings = bindings
impl.requires = depends
for elem in item.childNodes:
if elem.uri != XMLNS_IFACE: continue
if elem.name == 'archive':
url = elem.getAttribute('href')
if not url:
raise InvalidInterface(_("Missing href attribute on <archive>"))
size = elem.getAttribute('size')
if not size:
raise InvalidInterface(_("Missing size attribute on <archive>"))
impl.add_download_source(url = url, size = int(size),
extract = elem.getAttribute('extract'),
start_offset = _get_long(elem, 'start-offset'),
type = elem.getAttribute('type'))
elif elem.name == 'manifest-digest':
for aname, avalue in elem.attrs.items():
if ' ' not in aname:
impl.digests.append(zerostore.format_algorithm_digest_pair(aname, avalue))
elif elem.name == 'recipe':
recipe = Recipe()
for recipe_step in elem.childNodes:
if recipe_step.uri == XMLNS_IFACE and recipe_step.name == 'archive':
url = recipe_step.getAttribute('href')
if not url:
raise InvalidInterface(_("Missing href attribute on <archive>"))
size = recipe_step.getAttribute('size')
if not size:
raise InvalidInterface(_("Missing size attribute on <archive>"))
recipe.steps.append(DownloadSource(None, url = url, size = int(size),
extract = recipe_step.getAttribute('extract'),
start_offset = _get_long(recipe_step, 'start-offset'),
type = recipe_step.getAttribute('type')))
elif recipe_step.uri == XMLNS_IFACE and recipe_step.name == 'rename':
source = recipe_step.getAttribute('source')
if not source:
raise InvalidInterface(_("Missing source attribute on <rename>"))
dest = recipe_step.getAttribute('dest')
if not dest:
raise InvalidInterface(_("Missing dest attribute on <rename>"))
recipe.steps.append(RenameStep(source=source, dest=dest))
else:
logger.info(_("Unknown step '%s' in recipe; skipping recipe"), recipe_step.name)
break
else:
impl.download_sources.append(recipe)
root_attrs = {'stability': 'testing'}
root_commands = {}
if main:
logger.info("Note: @main on document element is deprecated in %s", self)
root_commands['run'] = Command(qdom.Element(XMLNS_IFACE, 'command', {'path': main, 'name': 'run'}), None)
process_group(feed_element, root_attrs, [], [], root_commands)
def process_impl(item, item_attrs, depends, bindings, commands):
id = item.getAttribute('id')
if id is None:
raise InvalidInterface(_("Missing 'id' attribute on %s") % item)
local_path = item_attrs.get('local-path')
if local_dir and local_path:
abs_local_path = os.path.abspath(os.path.join(local_dir, local_path))
impl = ZeroInstallImplementation(self, id, abs_local_path)
elif local_dir and (id.startswith('/') or id.startswith('.')):
# For old feeds
id = os.path.abspath(os.path.join(local_dir, id))
impl = ZeroInstallImplementation(self, id, id)
else:
impl = ZeroInstallImplementation(self, id, None)
if '=' in id:
# In older feeds, the ID was the (single) digest
impl.digests.append(id)
if id in self.implementations:
logger.warn(_("Duplicate ID '%(id)s' in feed '%(feed)s'"), {'id': id, 'feed': self})
self.implementations[id] = impl
impl.metadata = item_attrs
try:
version_mod = item_attrs.get('version-modifier', None)
if version_mod:
item_attrs['version'] += version_mod
del item_attrs['version-modifier']
version = item_attrs['version']
except KeyError:
raise InvalidInterface(_("Missing version attribute"))
impl.version = parse_version(version)
impl.commands = commands
impl.released = item_attrs.get('released', None)
impl.langs = item_attrs.get('langs', '').replace('_', '-')
size = item.getAttribute('size')
if size:
impl.size = int(size)
impl.arch = item_attrs.get('arch', None)
try:
stability = stability_levels[str(item_attrs['stability'])]
except KeyError:
stab = str(item_attrs['stability'])
if stab != stab.lower():
raise InvalidInterface(_('Stability "%s" invalid - use lower case!') % item_attrs.stability)
raise InvalidInterface(_('Stability "%s" invalid') % item_attrs['stability'])
if stability >= preferred:
raise InvalidInterface(_("Upstream can't set stability to preferred!"))
impl.upstream_stability = stability
impl.bindings = bindings
impl.requires = depends
for elem in item.childNodes:
if elem.uri != XMLNS_IFACE: continue
if elem.name == 'archive':
url = elem.getAttribute('href')
if not url:
raise InvalidInterface(_("Missing href attribute on <archive>"))
size = elem.getAttribute('size')
if not size:
raise InvalidInterface(_("Missing size attribute on <archive>"))
impl.add_download_source(url = url, size = int(size),
extract = elem.getAttribute('extract'),
start_offset = _get_long(elem, 'start-offset'),
type = elem.getAttribute('type'))
elif elem.name == 'manifest-digest':
for aname, avalue in elem.attrs.items():
if ' ' not in aname:
impl.digests.append(zerostore.format_algorithm_digest_pair(aname, avalue))
elif elem.name == 'recipe':
recipe = Recipe()
for recipe_step in elem.childNodes:
if recipe_step.uri == XMLNS_IFACE and recipe_step.name == 'archive':
url = recipe_step.getAttribute('href')
if not url:
raise InvalidInterface(_("Missing href attribute on <archive>"))
size = recipe_step.getAttribute('size')
if not size:
raise InvalidInterface(_("Missing size attribute on <archive>"))
recipe.steps.append(DownloadSource(None, url = url, size = int(size),
extract = recipe_step.getAttribute('extract'),
start_offset = _get_long(recipe_step, 'start-offset'),
type = recipe_step.getAttribute('type')))
elif recipe_step.uri == XMLNS_IFACE and recipe_step.name == 'rename':
source = recipe_step.getAttribute('source')
if not source:
raise InvalidInterface(_("Missing source attribute on <rename>"))
dest = recipe_step.getAttribute('dest')
if not dest:
raise InvalidInterface(_("Missing dest attribute on <rename>"))
recipe.steps.append(RenameStep(source=source, dest=dest))
else:
logger.info(_("Unknown step '%s' in recipe; skipping recipe"), recipe_step.name)
break
else:
impl.download_sources.append(recipe)
"""A quick DOM implementation.
Python's xml.dom is very slow. The xml.sax module is also slow (as it imports urllib2).
This is our light-weight version.
"""
# Copyright (C) 2009, Thomas Leonard
# See the README file for details, or visit http://0install.net.
from xml.parsers import expat
import zeroinstall
from zeroinstall.injector import versions
_parsed_version = versions.parse_version(zeroinstall.version)
class Element(object):
"""An XML element.
@ivar uri: the element's namespace
@type uri: str
@ivar name: the element's localName
@type name: str
@ivar attrs: the element's attributes (key is in the form [namespace " "] localName)
@type attrs: {str: str}
@ivar childNodes: children
@type childNodes: [L{Element}]
@ivar content: the text content
@type content: str"""
__slots__ = ['uri', 'name', 'attrs', 'childNodes', 'content']
def __init__(self, uri, name, attrs):
self.uri = uri
"""A quick DOM implementation.
Python's xml.dom is very slow. The xml.sax module is also slow (as it imports urllib2).
This is our light-weight version.
"""
# Copyright (C) 2009, Thomas Leonard
# See the README file for details, or visit http://0install.net.
from xml.parsers import expat
import zeroinstall
from zeroinstall.injector import versions
_parsed_version = versions.parse_version(zeroinstall.version)
class Element(object):
"""An XML element.
@ivar uri: the element's namespace
@type uri: str
@ivar name: the element's localName
@type name: str
@ivar attrs: the element's attributes (key is in the form [namespace " "] localName)
@type attrs: {str: str}
@ivar childNodes: children
@type childNodes: [L{Element}]
@ivar content: the text content
@type content: str"""
__slots__ = ['uri', 'name', 'attrs', 'childNodes', 'content']
