Using LIBXML2 in Swift

////Main.swift//C150805_LIBXML2R2//  http://git.oschina.net/yao_yu/Swift2015/tree/master/C150805_libxml2r2?dir=1&filepath=c150805_libxml2r2&oid=f80a7498226526b991e7913298c15cd38480aea5&sha= c073af33d0534a10098bb8fcc0706c2fd489dc3f////Created by Yao_yu on 15/8/5.//copyright©2015 year Yao_yu. All rights reserved.//Import Foundation/*----------Extension----------*/extension nsstring{convenience init?(urlstring:string, encoding:nsstringencoding) {Let URL= Nsurl (string: urlstring) Do {            TrySelf.init (contentsofurl:url!, Encoding:encoding)} Catch{}}}extension String {init? (XmlcharChar: unsafepointer<xmlchar>) {self.init ()if Char!=Nil { self= String.fromcstring (Unsafepointer<cchar> (Char))!        }    }}/*----------XML node----------*/classXMLNode {var xmldoc:xmldocptr=nil var xmlnode:xmlnodeptr=Nil init (node:xmlnodeptr, document:xmldocptr) {Self.xmlnode=node Self.xmldoc=Document} convenience init (document:xmldocptr) {self.init (Node:xmldocgetrootelement (document), doc ument:document)} lazy var rawcontent:string? = {       returnxmlnodegetcontent (Self.xmlnode)//return xmlnodegetstring (Self.xmldoc, XmlNode:self.xmlNode)} () lazy var children:[xmlnode]= {        returnself.xmlnodes2xmlnodes (Xmlnodegetchildren (Self.xmlnode))} () lazy var attributes: [string:string]= {        returnxmlnodegetattributes (Self.xmlnode)} () subscript (key:string)String? {        returnAttributes[key]}PrivateFunc xmlnodes2xmlnodes (Nodes:[xmlnodeptr])[XMLNode] {var xmlNodes=[XMLNode] () forNodeinchnodes{xmlnodes.append (XMLNode (Node:node, Document:xmldoc))}returnXmlNodes//The following code is thrown: Command failed due to Signal:abort trap:6//return nodes.map{[unowned Self] in XMLNode (node:$0, Document:self.xmlDoc)}}}extension XMLNode {func xPath (xpath:string)-[XMLNode] {returnxmlnodes2xmlnodes (Xmlfindxpath (Self.xmldoc, Xpath:xpath)}}/*----------libxml2 Read tool function----------*/func xmlnodegetstring (doc:xmldocptr, xmlnode:xmlnodeptr)String?{Let Contentchars= Xmlnodelistgetstring (Doc, XmlNode,1)    ifContentchars = = Nil {returnNil} let contentstring=String (xmlchar:contentchars) free (Contentchars) assert (contentstring! = Nil,"xmlnodegetstring: Value conversion not successful")    returncontentstring}func xmlnodegetcontent (xmlnode:xmlnodeptr)String?{Let Contentchars=xmlnodegetcontent (XmlNode)ifContentchars = = Nil {returnNil} let contentstring=String (xmlchar:contentchars) free (Contentchars) assert (contentstring! = Nil,"Xmlnodegetcontent: Value conversion not successful")    returncontentstring}func Xmlnodegetchildren (xmlnode:xmlnodeptr)-[xmlnodeptr] {var children=[Xmlnodeptr] () forvar childnodepointer =XmlNode.memory.children; Childnodepointer!=Nil; Childnodepointer=ChildNodePointer.memory.next {ifXmlnodeistext (childnodepointer) = =0{children.append (Childnodepointer)}}returnchildren}func xmlnodegetattributes (xmlnode:xmlnodeptr)-[string:string] {var result:[string:string]=[string:string] () forvar attribute:xmlattrptr =xmlNode.memory.properties; Attribute!=Nil; Attribute=Attribute.memory.next {ifLet key:string =String (XMLChar:attribute.memory.name) {ifLet value:string =xmlnodegetcontent (Attribute.memory.children) {Result[key]=Value}Else{Result[key]=""            }        } Else{print (">>>>>>>>>>>>>>>>>>>>>>>> Error:", String (XMLChar:attribute.memory.name))) }    }    returnResult}func Xmlnodegetattribute (xmlnode:xmlnodeptr, key:string)String? {     forvar attribute:xmlattrptr =xmlNode.memory.properties; Attribute!=Nil; Attribute=Attribute.memory.next {ifKey = =String (XMLChar:attribute.memory.name) {returnxmlnodegetcontent (Attribute.memory.children)}} returnNil}func Xmlfindxpath (xmldoc:xmldocptr, xpath:string)-[xmlnodeptr] {let Xpathcontext=Xmlxpathnewcontext (xmldoc)ifXpathcontext = =Nil {return[]} xPathContext.memory.node=Nil Let Xpathobject= Xmlxpathevalexpression (unsafepointer<xmlchar> (xpath.cstringusingencoding (NSUTF8StringEncoding)!), Xpathcontext) Xmlxpathfreecontext (xpathcontext)ifXpathobject = =Nil {return[]} let NodeSet=XPathObject.memory.nodesetvalifNodeSet = = Nil | | NodeSet.memory.nodeNr = =0|| NodeSet.memory.nodeTab = =Nil {xmlxpathfreeobject (xpathobject)return[]} var resultnodes=[Xmlnodeptr] () forIinch 0.. <Int (nodeSet.memory.nodeNr) {resultnodes.append (nodeset.memory.nodetab[i])} xmlxpathfreeobject (XPat Hobject)returnresultnodes}func xmlreadnsdata (data:nsdata?, encoding:nsstringencoding = nsutf8stringencoding, Isxml:bool =false)-Xmldocptr?  {    ifLet data =Data {Let CBuffer= unsafepointer<cchar>(data.bytes) let CSize=CInt (data.length)////Let cfencoding = cfstringconvertnsstringencodingtoencoding (encoding)//Let cfencodingasstring:cfstringref = Cfstringconvertencodingtoianacharsetname (cfencoding)//Let cencoding:unsafepointer<cchar> = Cfstringgetcstringptr (cfencodingasstring, CFStringEncoding (0))        ifisxml {Let options=CInt (Xml_parse_recover.rawvalue)returnxmlreadmemory (CBuffer, cSize, nil, nil, options)}Else{Let options= CInt (Html_parse_recover.rawvalue | Html_parse_nowarning.rawvalue |html_parse_noerror.rawvalue)returnhtmlreadmemory (CBuffer, cSize, nil, nil, options)}} returnNil}let gb18030_2000_encoding=cfstringconvertencodingtonsstringencoding (cfstringencoding (CFStringEncodings.GB_18030_2000.rawValue))/*----------Test Code----------*/classCelapsetime {var starttime:nsdate var prompt:string var unsed:bool=falseInit (prompt:string) {self.starttime=nsdate () self.prompt=prompt} var newprompt:string {return "\ (Prompt) Time: \ (NSDate (). Timeintervalsincedate (startTime))"    }}func Testparsesina () {var surl:string var encoding:uint (surl,encoding)= ("http://www.baidu.com", nsutf8stringencoding) print ("<<<<<<<<<<<<<<<<<<<<<<<<<< <<<<<<<<<<\ (sURL)") var timer= Celapsetime (prompt:"reading Web pages")    //Let scontent = NSString (Urlstring:surl, encoding:encoding)var scontent:nsstring? =Nil Do{        TryScontent = NSString (contentsoffile:"/volumes/data/document/test/sample.txt", Encoding:nsutf8stringencoding)} Catch{} print (timer.newprompt) let STimer1=timer.newprompt Timer= Celapsetime (prompt:"Data Parsing")        ifLet doc = Xmlreadnsdata (scontent?. Datausingencoding (nsutf8stringencoding)) {Let RootNode=XMLNode (document:doc) let Findnodes= Rootnode.xpath ("//div")         forChildnodeinchFindnodes {autoreleasepool{Let _=(Childnode.attributes, childnode.rawcontent)}//if let content = childnode.rawcontent {//Print (content)//            }} print (Findnodes.count)} print (STimer1) print (timer.newprompt)}testparsesina ()

Using LIBXML2 in Swift