def getResource(s, rxNSPrefix, nsMap, thisResource):
typeName = None
if matchName(s, rxNSPrefix, 'this-resource'):
assert thisResource
resource = thisResource
elif matchName(s, rxNSPrefix, 'resource'):
id = s.getAttributeNS(EMPTY_NAMESPACE, 'id')
resource = id
if not id:
resource = RxPath.generateBnode()
else:
#deprecated if the element has an id element treat as the resource URI ref and the element name as the class type
id = getAttributefromQName(s, rxNSPrefix, 'id')
if id is not None:
resource = id
if not resource:
resource = RxPath.generateBnode()
typeName = getURIFromElementName(s, nsMap)
else:
resource = getURIFromElementName(s, nsMap)
return resource, typeName
def addList2Model(model, subject, p, listID, scope, getObject=getObject):
prevListID = None
for child in p.childNodes:
if child.nodeType == p.COMMENT_NODE:
continue
object, objectType = getObject(child)
if prevListID:
listID = RxPath.generateBnode()
model.addStatement(
Statement(prevListID, RDF_MS_BASE + 'type',
RDF_MS_BASE + 'List', OBJECT_TYPE_RESOURCE, scope))
model.addStatement(
Statement(prevListID, RDF_MS_BASE + 'rest', listID,
OBJECT_TYPE_RESOURCE, scope))
model.addStatement(
Statement(listID, RDF_MS_BASE + 'first', object, objectType,
scope))
prevListID = listID
model.addStatement(
Statement(listID, RDF_MS_BASE + 'type', RDF_MS_BASE + 'List',
OBJECT_TYPE_RESOURCE, scope))
model.addStatement(
Statement(listID, RDF_MS_BASE + 'rest', RDF_MS_BASE + 'nil',
OBJECT_TYPE_RESOURCE, scope))
def addResource(model,
scope,
resource,
resourceElem,
rxNSPrefix,
nsMap,
thisResource,
noStmtIds=False):
'''
add the children of a RXML resource element to the model
'''
for p in resourceElem.childNodes:
if p.nodeType != p.ELEMENT_NODE:
continue
if matchName(p, rxNSPrefix, 'resource'):
predicate = p.getAttributeNS(EMPTY_NAMESPACE, 'id')
elif matchName(p, rxNSPrefix, 'a'): #alias for rdf:type
predicate = RDF_MS_BASE + 'type'
else:
predicate = getURIFromElementName(p, nsMap)
id = getAttributefromQName(p, rxNSPrefix, RX_STMTID_ATTRIB)
if not id: id = p.getAttributeNS(EMPTY_NAMESPACE, RX_STMTID_ATTRIB)
if id and noStmtIds:
raise RxMLError(RX_STMTID_ATTRIB +
' attribute found at illegal location')
if id:
raise RxMLError(RX_STMTID_ATTRIB + ' attribute not yet supported')
object = getAttributefromQName(p, rxNSPrefix,
'res') #this is deprecated
if object:
objectType = OBJECT_TYPE_RESOURCE
elif (getAttributefromQName(p, rxNSPrefix, 'list') is not None
or getAttributefromQName(p, {'': EMPTY_NAMESPACE},
'list') is not None
or getAttributefromQName(p, rxNSPrefix, 'listType') is not None
or getAttributefromQName(
p, {'': EMPTY_NAMESPACE}, 'listType') is not None or len([
c for c in p.childNodes if c.nodeType != p.COMMENT_NODE
and c.nodeValue and c.nodeValue.strip()
]) > 1):
#the object of this predicate is a list
listID = getAttributefromQName(p, rxNSPrefix, 'list')
if not listID:
listID = p.getAttributeNS(EMPTY_NAMESPACE, 'list')
if not listID:
listID = RxPath.generateBnode()
model.addStatement(
Statement(resource, predicate, listID, OBJECT_TYPE_RESOURCE,
scope))
listType = getAttributefromQName(p, rxNSPrefix, 'listType')
if not listID:
listType = p.getAttributeNS(EMPTY_NAMESPACE, 'listType')
getObjectFunc = lambda elem: getObject(elem, rxNSPrefix, nsMap,
thisResource)
if not listType or listType == 'rdf:List':
addList2Model(model, resource, p, listID, scope, getObjectFunc)
else:
addContainer2Model(model, resource, p, listID, scope,
getObjectFunc, listType)
continue
else: #object is a a literal or resource
childNodes = [
child for child in p.childNodes
if child.nodeType != child.COMMENT_NODE
]
if not childNodes:
#if predicate has no child we assume its an empty literal
#this could be the result of the common error with ZML
#where the ':' was missing after the predicate
invalidAttrLocalNames = [
attName[1] for attName in p.attributes.keys()
if attName[1] not in [RX_STMTID_ATTRIB, 'id']
]
if invalidAttrLocalNames:
#there's an attribute that not either 'stmtid' or 'rdf:id'
raise RxMLError('invalid attribute ' +
invalidAttrLocalNames[0] +
' on predicate element ' + p.localName +
' -- did you forget a ":"?')
object, objectType = "", OBJECT_TYPE_LITERAL
else:
assert len(childNodes) == 1, p
object, objectType = getObject(childNodes[0], rxNSPrefix,
nsMap, thisResource)
#print >>sys.stderr, 'adding ', repr(resource), repr(predicate), object,
model.addStatement(
Statement(resource, predicate, object, objectType, scope))
def GenerateBnode(context, name=None):
if name is not None:
name = StringValue(name)
return RxPath.generateBnode(name)
def _saveContents(self,
filepath,
contents,
altfilename=None,
indexURI=None,
title='',
previousRevisionDigest='',
maxLiteral=None):
'''
this is kind of ugly; XUpdate doesn't have an eval() function, so we
build up a string of xml and then parse it and then return the doc as
a nodeset and use xupdate:copy-of on the nodeset
'''
if indexURI:
self.addToIndex(indexURI, contents, title)
if maxLiteral is None:
maxLiteral = self.MAX_MODEL_LITERAL
#print >>sys.stderr, 'sc', filepath, title, contents
ns = '''xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
xmlns:a="http://rx4rdf.sf.net/ns/archive#"
xmlns:wiki="http://rx4rdf.sf.net/ns/wiki#"'''
contentLength = len(contents)
if filepath and maxLiteral > -1 and contentLength > maxLiteral:
#save as file
dir = os.path.split(filepath)[0]
try:
os.makedirs(dir)
except OSError:
pass #dir might already exist
ff = TxnFileFactory(filepath)
self.server.txnSvc.join(ff)
f = ff.create('b')
#f = file(filepath, 'wb')
f.write(contents)
f.close()
digest = utils.shaDigestString(contents)
if altfilename and self.ALTSAVE_DIR:
#we save another copy of the last revision in a location that
#that can be safely accessed and modified by external programs
#without breaking diffs etc.
altfilepath = os.path.join(self.ALTSAVE_DIR, altfilename)
abspath = os.path.abspath(altfilepath)
prefixlen = len(
InputSource.DefaultFactory.resolver.getPrefix(abspath))
assert prefixlen, ("filepath %s must be on Raccoon's PATH" %
abspath)
altPathURI = raccoon.SiteUriResolver.OsPathToPathUri(
abspath[prefixlen + 1:])
#if the altfilepath already exists compare its digest with the previous
#revisions digest and don't overwrite this file if they don't match
#-- instead add a wiki:save-conflict property to the new contentlocation.
if os.path.exists(altfilepath):
existingDigest = utils.shaDigest(altfilepath)
if existingDigest == digest:
#identical to the contents, so no need to write
saveAltFile = False
conflict = False
else:
conflict = True
if previousRevisionDigest:
#if these are equal, its ok to overwrite
saveAltFile = previousRevisionDigest == existingDigest
else:
saveAltFile = False
else:
saveAltFile = True
altContents = ("<wiki:alt-contents><a:ContentLocation "
"rdf:about='%s' /></wiki:alt-contents>" %
altPathURI)
if saveAltFile:
dir = os.path.split(altfilepath)[0]
try:
os.makedirs(dir)
except OSError:
pass #dir might already exist
ff = TxnFileFactory(altfilepath)
self.server.txnSvc.join(ff)
f = ff.create('b')
#f = file(altfilepath, 'wb')
f.write(contents)
f.close()
elif conflict:
self.log.warning(
"conflict trying to save revision to ALTSAVE_DIR: "
"unrecognized contents at %s" % altfilepath)
altContents = ("<wiki:save-conflict><a:ContentLocation "
"rdf:about='%s' /></wiki:save-conflict>" %
altPathURI)
else:
altContents = ''
contentProps = ("<a:content-length>%u</a:content-length>"
"<a:sha1-digest>%s</a:sha1-digest>" %
(contentLength, digest))
abspath = os.path.abspath(filepath)
prefixlen = len(
InputSource.DefaultFactory.resolver.getPrefix(abspath))
assert prefixlen, ("filepath %s must be on Raccoon's PATH" %
abspath)
filepathURI = raccoon.SiteUriResolver.OsPathToPathUri(
abspath[prefixlen + 1:])
#print >>sys.stderr, abspath, abspath[prefixlen+1:], prefixlen, filepathURI
xml = ("<a:ContentLocation %(ns)s rdf:about='%(filepathURI)s'>"
"%(contentProps)s%(altContents)s</a:ContentLocation>" %
locals())
else: #save the contents inside the model
try:
if isinstance(contents, str):
#test to see if the string can be treated as utf8
contents.decode('utf8')
return contents
#contents = utils.htmlQuote(contents)
#xml = '''<a:Content rdf:about='%(sha1urn)'>%(contentProps)s<a:contents>%(contents)s</a:contents></<a:Content>''' % locals()
except UnicodeError:
#could be binary, base64 encode
encodedURI = RxPath.generateBnode()
contents = base64.encodestring(contents)
xml = (
"<a:ContentTransform %(ns)s rdf:about='%(encodedURI)s'>"
"<a:transformed-by>"
"<rdf:Description rdf:about='http://www.w3.org/2000/09/xmldsig#base64'/>"
"</a:transformed-by>"
"<a:contents>%(contents)s</a:contents>"
"</a:ContentTransform>" % locals())
#print >>sys.stderr, 'sc', xml
from Ft.Xml import Domlette
#why can't InputSource accept unicode? lame (thus we don't support unicode filenames right now)
isrc = InputSource.DefaultFactory.fromString(str(xml), 'file:')
xmlDoc = Domlette.NonvalidatingReader.parse(isrc)
#return a nodeset containing the root element of the doc
#print >>sys.stderr, 'sc', xmlDoc.documentElement
return [xmlDoc.documentElement]
