class FtOutputElement(XsltElement):
"""
f:output is similar to xsl:output, but it allows you to compute the
output parameters dynamically (as attribute value templates). Unlike
xsl:output, this element is not expected to be empty; the output
parameters apply only to the serialization of the element's content.
"""
content = ContentInfo.Template
legalAttrs = {
'method': AttributeInfo.QNameAvt(),
'version': AttributeInfo.NMTokenAvt(),
'encoding': AttributeInfo.StringAvt(),
'omit-xml-declaration': AttributeInfo.YesNoAvt(),
'standalone': AttributeInfo.YesNoAvt(),
'doctype-public': AttributeInfo.StringAvt(),
'doctype-system': AttributeInfo.StringAvt(),
'cdata-section-elements': AttributeInfo.QNamesAvt(),
'indent': AttributeInfo.YesNoAvt(),
'media-type': AttributeInfo.StringAvt(),
}
def __init__(self, *args, **kwds):
XsltElement.__init__(self, *args, **kwds)
self._output_parameters = OutputParameters.OutputParameters()
return
def instantiate(self, context, processor):
context.processorNss = self.namespaces
context.currentInstruction = self
# this uses attributes directly from self
self._output_parameters.avtParse(self, context)
processor.addHandler(self._output_parameters,
processor.writer.getStream())
try:
for child in self.children:
child.instantiate(context, processor)
finally:
processor.removeHandler()
return
class DocumentElement(XsltElement):
"""
For the basic specification, see:
http://www.exslt.org/exsl/elements/document/index.html
The only URI scheme supported by 4Suite currently is 'file:'
Security note:
As a precaution, if you try to overwrite an existing file, it will be
saved to a temporary file (there will be a warning with the file name).
If this this precaution fails, the instruction will abort. You can
override this precaution, always allowing the function to overwrite
a document by using the f:overwrite-okay extension attribute.
"""
content = ContentInfo.Template
legalAttrs = {
'href' : AttributeInfo.UriReferenceAvt(required=1),
'method' : AttributeInfo.QNameAvt(),
'version' : AttributeInfo.NMTokenAvt(),
'encoding' : AttributeInfo.StringAvt(),
'omit-xml-declaration' : AttributeInfo.YesNoAvt(),
'standalone' : AttributeInfo.YesNoAvt(),
'doctype-public' : AttributeInfo.StringAvt(),
'doctype-system' : AttributeInfo.StringAvt(),
'cdata-section-elements' : AttributeInfo.QNamesAvt(),
'indent' : AttributeInfo.YesNoAvt(),
'media-type' : AttributeInfo.StringAvt(),
'f:overwrite-safeguard' : AttributeInfo.YesNoAvt(
default='no',
description='Whether or not to make backup copies of any file before it\'s overwritten.'),
'f:utfbom' : AttributeInfo.YesNoAvt(
default='no',
description='Whether to force output of a byte order mark (BOM). Usually used to generate a UTF-8 BOM. Do not use this unless you\'re sure you know what you\'re doing'),
}
doesSetup = True
def setup(self):
self._output_parameters = OutputParameters.OutputParameters()
return
def instantiate(self, context, processor):
context.processorNss = self.namespaces
context.currentInstruction = self
# this uses attributes directly from self
self._output_parameters.avtParse(self, context)
href = self._href.evaluate(context)
if Uri.IsAbsolute(href):
uri = href
else:
try:
uri = Uri.Absolutize(href,
Uri.OsPathToUri(processor.writer.getStream().name))
except Exception, e:
raise XsltRuntimeException(
ExsltError.NO_EXSLTDOCUMENT_BASE_URI,
context.currentInstruction, href)
path = Uri.UriToOsPath(uri)
if (self.attributes.get((FT_EXT_NAMESPACE, 'overwrite-safeguard') == u'yes')
and os.access(path, os.F_OK)):
# Kick in the safety measures
# FIXME: Security hole. Switch to the mkstemp as soon as we
# mandate Python 2.3 mnimum
savefile = tempfile.mktemp('', os.path.split(path)[-1]+'-')
processor.warn("The file you are trying to create with"
" exsl:document already exists. As a safety"
" measure it will be copied to a temporary file"
" '%s'." % savefile) #FIXME: l10n
try:
shutil.copyfile(path, savefile)
except:
raise XsltRuntimeException(
ExsltError.ABORTED_EXSLDOCUMENT_OVERWRITE,
context.currentInstruction, path, savefile)
try:
stream = open(path, 'w')
except IOError:
dirname = os.path.dirname(path)
# Should we also check base path writability with os.W_OK?
if not os.access(dirname, os.F_OK):
os.makedirs(dirname)
stream = open(path, 'w')
else:
raise
processor.addHandler(self._output_parameters, stream)
try:
self.processChildren(context, processor)
finally:
processor.removeHandler()
stream.close()
return