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Diffstat (limited to 'sandbox/sebastien/cpp/apr-2/modules/js/htdocs/atomutil.js')
-rw-r--r-- | sandbox/sebastien/cpp/apr-2/modules/js/htdocs/atomutil.js | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/sandbox/sebastien/cpp/apr-2/modules/js/htdocs/atomutil.js b/sandbox/sebastien/cpp/apr-2/modules/js/htdocs/atomutil.js new file mode 100644 index 0000000000..6b998dceda --- /dev/null +++ b/sandbox/sebastien/cpp/apr-2/modules/js/htdocs/atomutil.js @@ -0,0 +1,169 @@ +/* + * 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 = new Object(); + +/** + * Convert a list of elements to a list of values representing an ATOM entry. + */ +atom.entryElementsToValues = function(e) { + var lt = filter(selector(mklist(element, "'title")), e); + var t = isNil(lt)? '' : elementValue(car(lt)); + var li = filter(selector(mklist(element, "'id")), e); + var i = isNil(li)? '' : elementValue(car(li)); + var lc = filter(selector(mklist(element, "'content")), e); + return mklist(t, i, elementValue(car(lc))); +}; + +/** + * Convert a list of elements to a list of values representing ATOM entries. + */ +atom.entriesElementsToValues = function(e) { + if (isNil(e)) + return e; + return cons(atom.entryElementsToValues(car(e)), atom.entriesElementsToValues(cdr(e))); +}; + +/** + * Convert a list of strings to a list of values representing an ATOM entry. + */ +atom.readATOMEntry = function(l) { + var e = readXML(l); + if (isNil(e)) + return mklist(); + return atom.entryElementsToValues(car(e)); +}; + +/** + * Convert a list of values representy an ATOM entry to a value. + */ +atom.entryValue = function(e) { + var v = elementsToValues(mklist(caddr(e))); + return cons(car(e), (cadr(e), cdr(car(v)))); +}; + +/** + * 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)); + if (isNil(e)) + return mklist(elementValue(car(t)), elementValue(car(i))); + return cons(elementValue(car(t)), cons(elementValue(car(i)), atom.entriesElementsToValues(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 an ATOM feed containing elements to an ATOM feed containing values. + */ +atom.feedValues = function(e) { + function feedValuesLoop(e) { + if (isNil(e)) + return e; + return cons(entryValue(car(e)), feedValuesLoop(cdr(e))); + } + + return cons(car(e), cons(cadr(e), feedValuesLoop(cddr(e)))); +}; + +/** + * Convert a list of values representy an ATOM entry to a list of elements. + */ +atom.entryElement = function(l) { + return mklist(element, "'entry", mklist(attribute, "'xmlns", "http://www.w3.org/2005/Atom"), + mklist(element, "'title", mklist(attribute, "'type", "text"), car(l)), + mklist(element, "'id", cadr(l)), + mklist(element, "'content", mklist(attribute, "'type", (isList(caddr(l))? "application/xml" : "text")), caddr(l)), + mklist(element, "'link", mklist(attribute, "'href", cadr(l)))); +}; + +/** + * 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(l) { + return writeXML(mklist(atom.entryElement(l)), true); +}; + +/** + * Convert a list of values representing an ATOM feed to an ATOM feed. + */ +atom.writeATOMFeed = function(l) { + 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))); + if (isNil(cddr(l))) + return writeXML(mklist(f), true); + var fe = append(f, atom.entriesElements(cddr(l))); + return writeXML(mklist(fe), true); +}; + +/** + * Convert an ATOM entry containing a value to an ATOM entry containing an item element. + */ +atom.entryValuesToElements = function(v) { + if (isList(caddr(v))) + return cons(car(v), cons(cadr(v), valuesToElements(mklist(cons("'item", caddr(v)))))); + return cons(car(v), cons(cadr(v), valuesToElements(mklist(mklist("'item", caddr(v)))))); +}; + +/** + * Convert an ATOM feed containing values to an ATOM feed containing elements. + */ +atom.feedValuesToElements = function(v) { + function feedValuesToElementsLoop(v) { + if (isNil(v)) + return v; + return cons(atom.entryValuesToElements(car(v)), feedValuesToElementsLoop(cdr(v))); + } + + return cons(car(v), cons(cadr(v), feedValuesToElementsLoop(cddr(v)))); +}; + |