def make(prefix, xmlns):
if prefix is not None and not isinstance(prefix, str):
raise TypeError(f"prefix must be None or string, not {type(prefix)!r}")
xmlns = xsc.nsname(xmlns)
if not isinstance(xmlns, str):
raise TypeError(f"xmlns must be string, not {type(xmlns)!r}")
newprefixes[prefix] = xmlns
def __init__(self, node, indent=None, defaultxmlns=None):
"""
Create a :class:`TreePresenter` object for the XIST node :obj:`node` using
:obj:`indent` for indenting each tree level. If :obj:`indent` is
:const:`None` use the value of the environment variable ``LL_XIST_INDENT``
as the indent string (falling back to a tab if the environment variable
doesn't exist).
If :obj:`defaultxmlns` is not ``None``, elements from this namespace will
be output without any namespace name.
"""
Presenter.__init__(self, node)
if indent is None:
indent = os.environ.get("LL_XIST_INDENT", "\t")
self.indent = indent
self.defaultxmlns = xsc.nsname(defaultxmlns)
def __init__(self, node, indent=None, defaultxmlns=None):
"""
Create a :class:`TreePresenter` object for the XIST node :obj:`node` using
:obj:`indent` for indenting each tree level. If :obj:`indent` is
:const:`None` use the value of the environment variable ``LL_XIST_INDENT``
as the indent string (falling back to a tab if the environment variable
doesn't exist).
If :obj:`defaultxmlns` is not ``None``, elements from this namespace will
be output without any namespace name.
"""
Presenter.__init__(self, node)
if indent is None:
indent = os.environ.get("LL_XIST_INDENT", "\t")
self.indent = indent
self.defaultxmlns = xsc.nsname(defaultxmlns)
def __init__(self, data, url=None, defaultxmlns=None): """ Create an :class:`ETree` object. Arguments have the following meaning: :obj:`data` An object that supports the ElementTree API. :obj:`url` The URL of the source. Defaults to ``"ETREE"``. :obj:`defaultxmlns` The namespace name (or a namespace module containing a namespace name) that will be used for all elements that don't have a namespace. """ self.url = url_.URL(url if url is not None else "ETREE") self.data = data self.defaultxmlns = xsc.nsname(defaultxmlns)
def __init__(self, xmlns, xmlname): self.xmlns = xsc.nsname(xmlns) self.xmlname = xmlname
def check(pool, xmlns, xmlname, cls):
assert pool.elementclass(xmlns, xmlname) is cls
e = pool.element(xmlns, xmlname)
assert (e.xmlns, e.xmlname) == (xsc.nsname(xmlns), xmlname)
def selector(selectors, prefixes=None):
"""
Create a :class:`xfind.Selector` object that matches all nodes that match
the specified CSS selector expression. :obj:`selectors` can be a string or a
:class:`cssutils.css.selector.Selector` object. :obj:`prefixes`
may be a mapping mapping namespace prefixes to namespace names.
"""
if isinstance(selectors, str):
if prefixes is not None:
prefixes = dict((key, xsc.nsname(value)) for (key, value) in prefixes.items())
namespaces = "\n".join(f"@namespace {key if key is not None else ''} {value!r};" for (key, value) in prefixes.items())
selectors = f"{namespaces}\n{selectors}{{}}"
else:
selectors = f"{selectors}{{}}"
for rule in cssutils.CSSParser().parseString(selectors).cssRules:
if isinstance(rule, css.CSSStyleRule):
selectors = rule.selectorList.seq
break
else:
raise ValueError("can't happen")
elif isinstance(selectors, css.CSSStyleRule):
selectors = selectors.selectorList.seq
elif isinstance(selectors, css.Selector):
selectors = [selectors]
else:
raise TypeError(f"can't handle {type(selectors)!r}")
orcombinators = []
for selector in selectors:
rule = root = CSSTypeSelector()
attributename = None
attributevalue = None
combinator = None
for item in selector.seq:
t = item.type
v = item.value
if t == "type-selector":
rule.xmlns = v[0] if v[0] != -1 else None
rule.type = v[1]
if t == "universal":
rule.xmlns = v[0] if v[0] != -1 else None
rule.type = None
elif t == "id":
rule.selectors.append(xfind.hasid(v.lstrip("#")))
elif t == "class":
rule.selectors.append(xfind.hasclass(v.lstrip(".")))
elif t == "attribute-start":
combinator = None
elif t == "attribute-end":
if combinator is None:
rule.selectors.append(CSSHasAttributeSelector(attributename))
else:
rule.selectors.append(combinator(attributename, attributevalue))
elif t == "attribute-selector":
attributename = v
elif t == "equals":
combinator = xfind.attrhasvalue
elif t == "includes":
combinator = CSSAttributeListSelector
elif t == "dashmatch":
combinator = CSSAttributeLangSelector
elif t == "prefixmatch":
combinator = xfind.attrstartswith
elif t == "suffixmatch":
combinator = xfind.attrendswith
elif t == "substringmatch":
combinator = xfind.attrcontains
elif t == "pseudo-class":
if v.endswith("("):
try:
rule.selectors.append(_function2class[v.lstrip(":").rstrip("(")]())
except KeyError:
raise ValueError(f"unknown function {v}")
rule.function = v
else:
try:
rule.selectors.append(_pseudoname2class[v.lstrip(":")]())
except KeyError:
raise ValueError(f"unknown pseudo-class {v}")
elif t == "NUMBER":
# can only appear in a function => set the function value
rule.selectors[-1].value = v
elif t == "STRING":
# can only appear in a attribute selector => set the attribute value
attributevalue = v
elif t == "child":
rule = CSSTypeSelector()
root = xfind.ChildCombinator(root, rule)
elif t == "descendant":
rule = CSSTypeSelector()
root = xfind.DescendantCombinator(root, rule)
elif t == "adjacent-sibling":
rule = CSSTypeSelector()
root = CSSAdjacentSiblingCombinator(root, rule)
elif t == "following-sibling":
rule = CSSTypeSelector()
root = CSSGeneralSiblingCombinator(root, rule)
orcombinators.append(root)
return orcombinators[0] if len(orcombinators) == 1 else xfind.OrCombinator(*orcombinators)
def __init__(self, type=None, xmlns=None, *selectors): self.type = type self.xmlns = xsc.nsname(xmlns) self.selectors = [] # id, class, attribute etc. selectors for this node
def selector(selectors, prefixes=None):
"""
Create a :class:`xfind.Selector` object that matches all nodes that match
the specified CSS selector expression. :obj:`selectors` can be a string or a
:class:`cssutils.css.selector.Selector` object. :obj:`prefixes`
may be a mapping mapping namespace prefixes to namespace names.
"""
if isinstance(selectors, str):
if prefixes is not None:
prefixes = dict(
(key, xsc.nsname(value)) for (key, value) in prefixes.items())
selectors = "{}\n{}{{}}".format(
"\n".join("@namespace {} {!r};".format(
key if key is not None else "", value)
for (key, value) in prefixes.items()), selectors)
else:
selectors = "{}{{}}".format(selectors)
for rule in cssutils.CSSParser().parseString(selectors).cssRules:
if isinstance(rule, css.CSSStyleRule):
selectors = rule.selectorList.seq
break
else:
raise ValueError("can't happen")
elif isinstance(selectors, css.CSSStyleRule):
selectors = selectors.selectorList.seq
elif isinstance(selectors, css.Selector):
selectors = [selectors]
else:
raise TypeError("can't handle {!r}".format(type(selectors)))
orcombinators = []
for selector in selectors:
rule = root = CSSTypeSelector()
attributename = None
attributevalue = None
combinator = None
for item in selector.seq:
t = item.type
v = item.value
if t == "type-selector":
rule.xmlns = v[0] if v[0] != -1 else None
rule.type = v[1]
if t == "universal":
rule.xmlns = v[0] if v[0] != -1 else None
rule.type = None
elif t == "id":
rule.selectors.append(xfind.hasid(v.lstrip("#")))
elif t == "class":
rule.selectors.append(xfind.hasclass(v.lstrip(".")))
elif t == "attribute-start":
combinator = None
elif t == "attribute-end":
if combinator is None:
rule.selectors.append(
CSSHasAttributeSelector(attributename))
else:
rule.selectors.append(
combinator(attributename, attributevalue))
elif t == "attribute-selector":
attributename = v
elif t == "equals":
combinator = xfind.attrhasvalue
elif t == "includes":
combinator = CSSAttributeListSelector
elif t == "dashmatch":
combinator = CSSAttributeLangSelector
elif t == "prefixmatch":
combinator = xfind.attrstartswith
elif t == "suffixmatch":
combinator = xfind.attrendswith
elif t == "substringmatch":
combinator = xfind.attrcontains
elif t == "pseudo-class":
if v.endswith("("):
try:
rule.selectors.append(
_function2class[v.lstrip(":").rstrip("(")]())
except KeyError:
raise ValueError("unknown function {}".format(v))
rule.function = v
else:
try:
rule.selectors.append(
_pseudoname2class[v.lstrip(":")]())
except KeyError:
raise ValueError("unknown pseudo-class {}".format(v))
elif t == "NUMBER":
# can only appear in a function => set the function value
rule.selectors[-1].value = v
elif t == "STRING":
# can only appear in a attribute selector => set the attribute value
attributevalue = v
elif t == "child":
rule = CSSTypeSelector()
root = xfind.ChildCombinator(root, rule)
elif t == "descendant":
rule = CSSTypeSelector()
root = xfind.DescendantCombinator(root, rule)
elif t == "adjacent-sibling":
rule = CSSTypeSelector()
root = CSSAdjacentSiblingCombinator(root, rule)
elif t == "following-sibling":
rule = CSSTypeSelector()
root = CSSGeneralSiblingCombinator(root, rule)
orcombinators.append(root)
return orcombinators[0] if len(orcombinators) == 1 else xfind.OrCombinator(
*orcombinators)
def __init__(self, type=None, xmlns=None, *selectors):
self.type = type
self.xmlns = xsc.nsname(xmlns)
self.selectors = [
] # id, class, attribute etc. selectors for this node
def check(pool, xmlns, xmlname, cls): assert pool.elementclass(xmlns, xmlname) is cls e = pool.element(xmlns, xmlname) assert (e.xmlns, e.xmlname) == (xsc.nsname(xmlns), xmlname)
