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Diffstat (limited to 'sca-cpp/branches/lightweight-sca/modules/js/htdocs/atomutil.js')
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1 files changed, 184 insertions, 0 deletions
diff --git a/sca-cpp/branches/lightweight-sca/modules/js/htdocs/atomutil.js b/sca-cpp/branches/lightweight-sca/modules/js/htdocs/atomutil.js new file mode 100644 index 0000000000..068b5de2fd --- /dev/null +++ b/sca-cpp/branches/lightweight-sca/modules/js/htdocs/atomutil.js @@ -0,0 +1,184 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +/** + * ATOM data conversion functions. + */ +var atom = {}; + +/** + * Convert a list of elements to a list of values representing an ATOM entry. + */ +atom.entryElementValues = function(e) { + var lt = filter(selector(mklist(element, "'title")), e); + var t = mklist(element, "'title", isNil(lt)? '' : elementValue(car(lt))); + + var li = filter(selector(mklist(element, "'id")), e); + var i = mklist(element, "'id", isNil(li)? '' : elementValue(car(li))); + + var la = filter(selector(mklist(element, "'author")), e); + var lan = isNil(la)? mklist() : filter(selector(mklist(element, "'name")), car(la)); + var lae = isNil(la)? mklist() : filter(selector(mklist(element, "'email")), car(la)); + var laa = isNil(lan)? lae : lan; + var a = isNil(laa)? mklist() : mklist(mklist(element, "'author", elementValue(car(laa)))); + + var lu = filter(selector(mklist(element, "'updated")), e); + var u = isNil(lu)? mklist() : mklist(mklist(element, "'updated", elementValue(car(lu)))); + + var lc = filter(selector(mklist(element, "'content")), e); + var c = isNil(lc)? mklist() : mklist(mklist(element, "'content", elementValue(car(lc)))); + + return append(append(append(mklist(element, "'entry", t, i), a), u), c); +}; + +/** + * Convert a list of elements to a list of values representing ATOM entries. + */ +atom.entriesElementValues = function(e) { + if (isNil(e)) + return e; + return cons(atom.entryElementValues(car(e)), atom.entriesElementValues(cdr(e))); +}; + +/** + * Return true if a list of strings represents an ATOM entry. + */ +atom.isATOMEntry = function(l) { + if (!isXML(l)) + return false; + return car(l).match('<entry') != null && car(l).match('<feed') == null && car(l).match('="http://www.w3.org/2005/Atom"') != null; +}; + +/** + * Convert a DOM Document to a list of values representing an ATOM entry. + */ +atom.readATOMEntryDocument = function(doc) { + var e = readXMLDocument(doc); + if (isNil(e)) + return mklist(); + return mklist(atom.entryElementValues(car(e))); +}; + +/** + * Convert a list of strings to a list of values representing an ATOM entry. + */ +atom.readATOMEntry = function(l) { + return atom.readATOMEntryDocument(parseXML(l)); +}; + +/** + * Return true if a list of strings represents an ATOM feed. + */ +atom.isATOMFeed = function(l) { + if (!isXML(l)) + return false; + return car(l).match('<feed') != null && car(l).match('="http://www.w3.org/2005/Atom"') != null; +}; + +/** + * Convert a DOM document to a list of values representing an ATOM feed. + */ +atom.readATOMFeedDocument = function(doc) { + var f = readXMLDocument(doc); + if (isNil(f)) + return mklist(); + var t = filter(selector(mklist(element, "'title")), car(f)); + var i = filter(selector(mklist(element, "'id")), car(f)); + var e = filter(selector(mklist(element, "'entry")), car(f)); + return mklist(append( + mklist(element, "'feed", mklist(element, "'title", elementValue(car(t))), mklist(element, "'id", elementValue(car(i)))), + atom.entriesElementValues(e))); +}; + +/** + * Convert a list of strings to a list of values representing an ATOM feed. + */ +atom.readATOMFeed = function(l) { + return atom.readATOMFeedDocument(parseXML(l)); +}; + +/** + * Convert a list of values representy an ATOM entry to a list of elements. + */ +atom.entryElement = function(l) { + var title = elementValue(namedElementChild("'title", l)); + var id = elementValue(namedElementChild("'id", l)); + var author = namedElementChild("'author", l); + var email = isNil(author)? false : (elementValue(author).indexOf('@') != -1); + var updated = namedElementChild("'updated", l); + var content = namedElementChild("'content", l); + var text = isNil(content)? false : elementHasValue(content); + return append(append(append(append( + mklist(element, "'entry", mklist(attribute, "'xmlns", "http://www.w3.org/2005/Atom"), + mklist(element, "'title", mklist(attribute, "'type", "text"), title), mklist(element, "'id", id)), + isNil(author)? mklist() : mklist(element, "'author", + (email? mklist(element, "'email", elementValue(author)) : mklist(element, "'name", elementValue(author))))), + isNil(updated)? mklist() : mklist(element, "'updated", elementValue(updated))), + isNil(content)? mklist() : + mklist(append(mklist(element, "'content", mklist(attribute, "'type", text? "text" : "application/xml")), + text? mklist(elementValue(content)) : elementChildren(content)))), + mklist(mklist(element, "'link", mklist(attribute, "'href", id)))); +}; + +/** + * Convert a list of values representing ATOM entries to a list of elements. + */ +atom.entriesElements = function(l) { + if (isNil(l)) + return l; + return cons(atom.entryElement(car(l)), atom.entriesElements(cdr(l))); +}; + +/** + * Convert a list of values representing an ATOM entry to an ATOM entry. + */ +atom.writeATOMEntry = function(ll) { + var l = isNil(ll)? ll : car(ll); + return writeXML(mklist(atom.entryElement(l)), true); +}; + +/** + * Convert a list of values representing an ATOM feed to an ATOM feed. + */ +atom.writeATOMFeed = function(ll) { + var l = isNil(ll)? ll : car(ll); + var lt = filter(selector(mklist(element, "'title")), l); + var t = isNil(lt)? '' : elementValue(car(lt)); + var li = filter(selector(mklist(element, "'id")), l); + var i = isNil(li)? '' : elementValue(car(li)); + var f = mklist(element, "'feed", mklist(attribute, "'xmlns", "http://www.w3.org/2005/Atom"), + mklist(element, "'title", mklist(attribute, "'type", "text"), car(l)), + mklist(element, "'id", cadr(l))); + + // Write ATOM entries + var le = filter(selector(mklist(element, "'entry")), l); + if (isNil(le)) + return writeXML(mklist(f), true); + + // Write a single ATOM entry element with a list of values + if (!isNil(le) && !isNil(car(le)) && isList(car(caddr(car(le))))) { + var fe = append(f, atom.entriesElements(caddr(car(le)))); + return writeXML(mklist(fe), true); + } + + // Write separate ATOM entry elements + var fe = append(f, atom.entriesElements(le)); + return writeXML(mklist(fe), true); +}; + |