def writer(stream=sys.stdout, **kwargs):
from amara.writers.outputparameters import outputparameters
oparams = outputparameters(**kwargs)
if kwargs.get("method", "xml") == "xml":
from amara.writers.xmlwriter import _xmluserwriter
writer_class = _xmluserwriter
else:
from amara.writers.htmlwriter import _htmluserwriter
writer_class = _htmluserwriter
return writer_class(oparams, stream)
def instantiate(self, context):
output_parameters = outputparameters.outputparameters(
method='xml', encoding=context.output_parameters.encoding,
omit_xml_declaration=True)
writer = xmlwriter.xmlwriter(output_parameters, StringIO())
context.push_writer(writer)
try:
self.process_children(context)
finally:
writer = context.pop_writer()
msg = writer.stream.getvalue()
if self._terminate:
raise XsltError(XsltError.STYLESHEET_REQUESTED_TERMINATION, msg=msg)
else:
context.message(msg)
return
def instantiate(self, context):
output_parameters = outputparameters.outputparameters(
method='xml',
encoding=context.output_parameters.encoding,
omit_xml_declaration=True)
writer = xmlwriter.xmlwriter(output_parameters, StringIO())
context.push_writer(writer)
try:
self.process_children(context)
finally:
writer = context.pop_writer()
msg = writer.stream.getvalue()
if self._terminate:
raise XsltError(XsltError.STYLESHEET_REQUESTED_TERMINATION,
msg=msg)
else:
context.message(msg)
return
def setup(self, _param_element=variable_elements.param_element):
"""
Called only once, at the first initialization
"""
self.output_parameters = outputparameters.outputparameters()
# Sort the top-level elements in decreasing import precedence to ease
# processing later.
precedence_key = operator.attrgetter('import_precedence')
elements = sorted(self.children, key=precedence_key, reverse=True)
# Merge the top-level stylesheet elements into their respective
# lists. Any element name not in the mapping is discarded.
# Note, by sharing the same list no merging is required later.
whitespace_elements, variable_elements = [], []
top_level_elements = {
'strip-space' : whitespace_elements,
'preserve-space' : whitespace_elements,
'output' : [],
'key' : [],
'decimal-format' : [],
'namespace-alias' : [],
'attribute-set': [],
'variable' : variable_elements,
'param' : variable_elements,
'template' : [],
}
# Using `groupby` takes advantage of series of same-named elements
# appearing adjacent to each other.
key = operator.attrgetter('expanded_name')
for (namespace, name), nodes in itertools.groupby(self.children, key):
if namespace == XSL_NAMESPACE and name in top_level_elements:
top_level_elements[name].extend(nodes)
# - process the `xsl:preserve-space` and `xsl:strip-space` elements
# RECOVERY: Multiple matching patterns use the last occurance
space_rules = {}
for element in whitespace_elements:
strip = element._strip_whitespace
for token in element._elements:
namespace, name = token
space_rules[token] = (namespace, name, strip)
self.space_rules = space_rules.values()
# sort in decreasing priority, where `*` is lowest, followed by
# `prefix:*`, then all others.
self.space_rules.sort(reverse=True)
# - process the `xsl:output` elements
# Sort in increasing import precedence, so the last one added
# will have the highest import precedence
elements = top_level_elements['output']
getter = operator.attrgetter(
'_method', '_version', '_encoding', '_omit_xml_declaration',
'_standalone', '_doctype_system', '_doctype_public',
'_cdata_section_elements', '_indent', '_media_type',
'_byte_order_mark', '_canonical_form')
for element in elements:
(method, version, encoding, omit_xmldecl, standalone,
doctype_system, doctype_public, cdata_elements, indent,
media_type, byte_order_mark, canonical_form) = getter(element)
if method is not None:
self.output_parameters.method = method
if version is not None:
self.output_parameters.version = version
if encoding is not None:
self.output_parameters.encoding = encoding
if omit_xmldecl is not None:
self.output_parameters.omit_xml_declaration = omit_xmldecl
if standalone is not None:
self.output_parameters.standalone = standalone
if doctype_system is not None:
self.output_parameters.doctype_system = doctype_system
if doctype_public is not None:
self.output_parameters.doctype_public = doctype_public
if cdata_elements:
self.output_parameters.cdata_section_elements += cdata_elements
if indent is not None:
self.output_parameters.indent = indent
if media_type is not None:
self.output_parameters.media_type = media_type
if byte_order_mark is not None:
self.output_parameters.byte_order_mark = byte_order_mark
if canonical_form is not None:
self.output_parameters.canonical_form = canonical_form
# - process the `xsl:key` elements
# Group the keys by name
elements = top_level_elements['key']
name_key = operator.attrgetter('_name')
elements.sort(key=name_key)
keys = self._keys = {}
for name, elements in itertools.groupby(elements, name_key):
keys[name] = tuple(elements)
# - process the `xsl:decimal-format` elements
formats = self.decimal_formats = {}
getter = operator.attrgetter(
'_decimal_separator', '_grouping_separator', '_infinity',
'_minus_sign', '_NaN', '_percent', '_per_mille', '_zero_digit',
'_digit', '_pattern_separator')
for element in top_level_elements['decimal-format']:
name = element._name
format = getter(element)
# It is an error to declare a decimal-format more than once
# (even with different import precedence) with different values.
if name in formats and formats[name] != format:
# Construct a useful name for the error message.
if name:
namespace, name = name
if namespace:
name = element.namespaces[namespace] + ':' + name
else:
name = '#default'
raise XsltError(XsltError.DUPLICATE_DECIMAL_FORMAT, name)
else:
formats[name] = format
# Add the default decimal format, if not declared.
if None not in formats:
formats[None] = ('.', ',', 'Infinity', '-', 'NaN', '%',
unichr(0x2030), '0', '#', ';')
# - process the `xsl:namespace-alias` elements
elements = top_level_elements['namespace-alias']
elements.reverse()
aliases = self.namespace_aliases = {}
for precedence, group in itertools.groupby(elements, precedence_key):
mapped = {}
for element in group:
namespace = element.namespaces[element._stylesheet_prefix]
if namespace not in aliases:
mapped[namespace] = True
result_prefix = element._result_prefix
result_namespace = element.namespaces[result_prefix]
aliases[namespace] = (result_namespace, result_prefix)
# It is an error for a namespace URI to be mapped to multiple
# different namespace URIs (with the same import precedence).
elif namespace in mapped:
raise XsltError(XsltError.DUPLICATE_NAMESPACE_ALIAS,
element._stylesheet_prefix)
if aliases:
# apply namespace fixup for the literal elements
_fixup_aliases(self, aliases)
# - process the `xsl:attribute-set` elements
sets = self.attribute_sets = {}
for element in top_level_elements['attribute-set']:
sets[element._name] = element
# - process the `xsl:param` and `xsl:variable` elements
index, self._variables = {}, variable_elements[:]
variable_elements.reverse()
for element in variable_elements:
name = element._name
if name not in index:
# unique (or first) variable binding
index[name] = 1
else:
# shadowed variable binding, remove from processing list
self._variables.remove(element)
self.parameters = frozenset(element._name for element in self._variables
if isinstance(element, _param_element))
# - process the `xsl:template` elements
match_templates = collections.defaultdict(_type_dispatch_table)
named_templates = self.named_templates = {}
elements = top_level_elements['template']
elements.reverse()
getter = operator.attrgetter('node_test', 'axis_type', 'node_type')
for position, element in enumerate(elements):
match, name = element._match, element._name
precedence = element.import_precedence
if match:
namespaces = element.namespaces
template_priority = element._priority
mode_table = match_templates[element._mode]
for pattern in match:
node_test, axis_type, node_type = getter(pattern)
if template_priority is None:
priority = node_test.priority
else:
priority = template_priority
sort_key = (precedence, priority, position)
info = (sort_key, node_test, axis_type, element)
# Add the template rule to the dispatch table
type_key = node_type.xml_typecode
if type_key == tree.element.xml_typecode:
# Element types are further keyed by the name test.
name_key = node_test.name_key
if name_key:
prefix, local = name_key
# Unprefixed names are in the null-namespace
try:
namespace = prefix and namespaces[prefix]
except KeyError:
raise XPathError(XPathError.UNDEFINED_PREFIX,
prefix=prefix)
else:
name_key = namespace, local
mode_table[type_key][name_key].append(info)
else:
# Every other node type gets lumped into a single list
# for that node type
mode_table[type_key].append(info)
if name:
# XSLT 1.0, Section 6, Paragraph 3:
# It is an error if a stylesheet contains more than one
# template with the same name and same import precedence.
if name not in named_templates:
named_templates[name] = element
elif named_templates[name].import_precedence == precedence:
# Construct a useful name for the error message.
namespace, name = name
if namespace:
name = element.namespaces[namespace] + ':' + name
raise XsltError(XsltError.DUPLICATE_NAMED_TEMPLATE, name)
# Now expanded the tables and convert to regular dictionaries to
# prevent inadvertant growth when non-existant keys are used.
match_templates = self.match_templates = dict(match_templates)
for mode, type_table in match_templates.iteritems():
# Add those patterns that don't have a distinct type:
# node(), id() and key() patterns
any_patterns = type_table[tree.node.xml_typecode]
type_table = match_templates[mode] = dict(type_table)
for type_key, patterns in type_table.iteritems():
if type_key == tree.element.xml_typecode:
# Add those that are wildcard tests ('*' and 'prefix:*')
wildcard_names = patterns[None]
name_table = type_table[type_key] = dict(patterns)
for name_key, patterns in name_table.iteritems():
if name_key is not None:
patterns.extend(wildcard_names)
patterns.extend(any_patterns)
patterns.sort(reverse=True)
name_table[name_key] = tuple(patterns)
else:
patterns.extend(any_patterns)
patterns.sort(reverse=True)
type_table[type_key] = tuple(patterns)
#self._dump_match_templates(match_templates)
return
def setup(self, _param_element=variable_elements.param_element):
"""
Called only once, at the first initialization
"""
self.output_parameters = outputparameters.outputparameters()
# Sort the top-level elements in decreasing import precedence to ease
# processing later.
precedence_key = operator.attrgetter('import_precedence')
elements = sorted(self.children, key=precedence_key, reverse=True)
# Merge the top-level stylesheet elements into their respective
# lists. Any element name not in the mapping is discarded.
# Note, by sharing the same list no merging is required later.
whitespace_elements, variable_elements = [], []
top_level_elements = {
'strip-space': whitespace_elements,
'preserve-space': whitespace_elements,
'output': [],
'key': [],
'decimal-format': [],
'namespace-alias': [],
'attribute-set': [],
'variable': variable_elements,
'param': variable_elements,
'template': [],
}
# Using `groupby` takes advantage of series of same-named elements
# appearing adjacent to each other.
key = operator.attrgetter('expanded_name')
for (namespace, name), nodes in itertools.groupby(self.children, key):
if namespace == XSL_NAMESPACE and name in top_level_elements:
top_level_elements[name].extend(nodes)
# - process the `xsl:preserve-space` and `xsl:strip-space` elements
# RECOVERY: Multiple matching patterns use the last occurance
space_rules = {}
for element in whitespace_elements:
strip = element._strip_whitespace
for token in element._elements:
namespace, name = token
space_rules[token] = (namespace, name, strip)
self.space_rules = space_rules.values()
# sort in decreasing priority, where `*` is lowest, followed by
# `prefix:*`, then all others.
self.space_rules.sort(reverse=True)
# - process the `xsl:output` elements
# Sort in increasing import precedence, so the last one added
# will have the highest import precedence
elements = top_level_elements['output']
getter = operator.attrgetter('_method', '_version', '_encoding',
'_omit_xml_declaration', '_standalone',
'_doctype_system', '_doctype_public',
'_cdata_section_elements', '_indent',
'_media_type', '_byte_order_mark',
'_canonical_form')
for element in elements:
(method, version, encoding, omit_xmldecl, standalone,
doctype_system, doctype_public, cdata_elements, indent,
media_type, byte_order_mark, canonical_form) = getter(element)
if method is not None:
self.output_parameters.method = method
if version is not None:
self.output_parameters.version = version
if encoding is not None:
self.output_parameters.encoding = encoding
if omit_xmldecl is not None:
self.output_parameters.omit_xml_declaration = omit_xmldecl
if standalone is not None:
self.output_parameters.standalone = standalone
if doctype_system is not None:
self.output_parameters.doctype_system = doctype_system
if doctype_public is not None:
self.output_parameters.doctype_public = doctype_public
if cdata_elements:
self.output_parameters.cdata_section_elements += cdata_elements
if indent is not None:
self.output_parameters.indent = indent
if media_type is not None:
self.output_parameters.media_type = media_type
if byte_order_mark is not None:
self.output_parameters.byte_order_mark = byte_order_mark
if canonical_form is not None:
self.output_parameters.canonical_form = canonical_form
# - process the `xsl:key` elements
# Group the keys by name
elements = top_level_elements['key']
name_key = operator.attrgetter('_name')
elements.sort(key=name_key)
keys = self._keys = {}
for name, elements in itertools.groupby(elements, name_key):
keys[name] = tuple(elements)
# - process the `xsl:decimal-format` elements
formats = self.decimal_formats = {}
getter = operator.attrgetter('_decimal_separator',
'_grouping_separator', '_infinity',
'_minus_sign', '_NaN', '_percent',
'_per_mille', '_zero_digit', '_digit',
'_pattern_separator')
for element in top_level_elements['decimal-format']:
name = element._name
format = getter(element)
# It is an error to declare a decimal-format more than once
# (even with different import precedence) with different values.
if name in formats and formats[name] != format:
# Construct a useful name for the error message.
if name:
namespace, name = name
if namespace:
name = element.namespaces[namespace] + ':' + name
else:
name = '#default'
raise XsltError(XsltError.DUPLICATE_DECIMAL_FORMAT, name)
else:
formats[name] = format
# Add the default decimal format, if not declared.
if None not in formats:
formats[None] = ('.', ',', 'Infinity', '-', 'NaN', '%',
unichr(0x2030), '0', '#', ';')
# - process the `xsl:namespace-alias` elements
elements = top_level_elements['namespace-alias']
elements.reverse()
aliases = self.namespace_aliases = {}
for precedence, group in itertools.groupby(elements, precedence_key):
mapped = {}
for element in group:
namespace = element.namespaces[element._stylesheet_prefix]
if namespace not in aliases:
mapped[namespace] = True
result_prefix = element._result_prefix
result_namespace = element.namespaces[result_prefix]
aliases[namespace] = (result_namespace, result_prefix)
# It is an error for a namespace URI to be mapped to multiple
# different namespace URIs (with the same import precedence).
elif namespace in mapped:
raise XsltError(XsltError.DUPLICATE_NAMESPACE_ALIAS,
element._stylesheet_prefix)
if aliases:
# apply namespace fixup for the literal elements
_fixup_aliases(self, aliases)
# - process the `xsl:attribute-set` elements
sets = self.attribute_sets = {}
for element in top_level_elements['attribute-set']:
sets[element._name] = element
# - process the `xsl:param` and `xsl:variable` elements
index, self._variables = {}, variable_elements[:]
variable_elements.reverse()
for element in variable_elements:
name = element._name
if name not in index:
# unique (or first) variable binding
index[name] = 1
else:
# shadowed variable binding, remove from processing list
self._variables.remove(element)
self.parameters = frozenset(element._name
for element in self._variables
if isinstance(element, _param_element))
# - process the `xsl:template` elements
match_templates = collections.defaultdict(_type_dispatch_table)
named_templates = self.named_templates = {}
elements = top_level_elements['template']
elements.reverse()
getter = operator.attrgetter('node_test', 'axis_type', 'node_type')
for position, element in enumerate(elements):
match, name = element._match, element._name
precedence = element.import_precedence
if match:
namespaces = element.namespaces
template_priority = element._priority
mode_table = match_templates[element._mode]
for pattern in match:
node_test, axis_type, node_type = getter(pattern)
if template_priority is None:
priority = node_test.priority
else:
priority = template_priority
sort_key = (precedence, priority, position)
info = (sort_key, node_test, axis_type, element)
# Add the template rule to the dispatch table
type_key = node_type.xml_typecode
if type_key == tree.element.xml_typecode:
# Element types are further keyed by the name test.
name_key = node_test.name_key
if name_key:
prefix, local = name_key
# Unprefixed names are in the null-namespace
try:
namespace = prefix and namespaces[prefix]
except KeyError:
raise XPathError(XPathError.UNDEFINED_PREFIX,
prefix=prefix)
else:
name_key = namespace, local
mode_table[type_key][name_key].append(info)
else:
# Every other node type gets lumped into a single list
# for that node type
mode_table[type_key].append(info)
if name:
# XSLT 1.0, Section 6, Paragraph 3:
# It is an error if a stylesheet contains more than one
# template with the same name and same import precedence.
if name not in named_templates:
named_templates[name] = element
elif named_templates[name].import_precedence == precedence:
# Construct a useful name for the error message.
namespace, name = name
if namespace:
name = element.namespaces[namespace] + ':' + name
raise XsltError(XsltError.DUPLICATE_NAMED_TEMPLATE, name)
# Now expanded the tables and convert to regular dictionaries to
# prevent inadvertant growth when non-existant keys are used.
match_templates = self.match_templates = dict(match_templates)
for mode, type_table in match_templates.iteritems():
# Add those patterns that don't have a distinct type:
# node(), id() and key() patterns
any_patterns = type_table[tree.node.xml_typecode]
type_table = match_templates[mode] = dict(type_table)
for type_key, patterns in type_table.iteritems():
if type_key == tree.element.xml_typecode:
# Add those that are wildcard tests ('*' and 'prefix:*')
wildcard_names = patterns[None]
name_table = type_table[type_key] = dict(patterns)
for name_key, patterns in name_table.iteritems():
if name_key is not None:
patterns.extend(wildcard_names)
patterns.extend(any_patterns)
patterns.sort(reverse=True)
name_table[name_key] = tuple(patterns)
else:
patterns.extend(any_patterns)
patterns.sort(reverse=True)
type_table[type_key] = tuple(patterns)
#self._dump_match_templates(match_templates)
return
def setup(self):
self._output_parameters = outputparameters.outputparameters()
return
def setup(self):
self._output_parameters = outputparameters.outputparameters()
return
