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Crawy.js
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/*
Crawy 1.0.2 by Leonardo Ciaccio
License MIT + Ask me your request !
( Email )[ [email protected] ]
( Facebook )[ m.me/leonardo.ciaccio ]
*/
( function( $, tools ){
"use strict";
var version = "1.0.2";
var CrawyState = {
enjoy : "(̶◉͛‿◉̶)",
happy : "(◔◡◔)",
nothappy : "(˘︹˘)",
what : "(⊙.⊙(☉̃ₒ☉)⊙.⊙)",
yesss : "(>‿◠)",
ehmm : "(ㆆ_ㆆ)"
};
// --> Test browser feature
var passed = false;
try{
if(
typeof document.querySelectorAll !== "undefined" &&
String.prototype.trim &&
Array.prototype.indexOf &&
tools.GetXHR() !== null &&
window.File && window.FileReader && window.FileList && window.Blob
)
passed = true;
}catch( e ){
// TODO
}
if( !passed ){
alert( CrawyState.what + " This browser not support 'Crawy' feature !" );
throw new Error( CrawyState.what + " This browser not support 'Crawy' feature !" );
}
// <-- Test browser feature, passed !
// --> Extend some objects
Array.prototype.Unique = function( value ){
if( this.indexOf( value ) < 0 )this.push( value );
return this;
};
Array.prototype.OnlyUnique = function(){
var newthis = [];
for( var i = 0; i < this.length; i++ ){
newthis.Unique( this[ i ] );
}
return newthis;
};
Array.prototype.MergeUnique = function( arr, arrcompare ){
arrcompare = arrcompare || [];
for( var i = 0; i < arr.length; i++ ){
if( arrcompare.indexOf( arr[ i ] ) < 0 )this.Unique( arr[ i ] );
}
return this;
};
// --> Globals
var stopped = false,
autoscore = false;
var allinks = [],
workerlinks = [],
checkinglinks = [],
checkedlinks = [],
timeoutlinks = [],
errorlinks = [],
sources = [];
// --> Update Info
var UpdateInfo = function(){
console.log( "All links : " + allinks.length );
console.log( "Worker links : " + workerlinks.length );
console.log( "Checking links : " + checkinglinks.length );
console.log( "Checked links : " + checkedlinks.length );
console.log( "Timeouts : " + timeoutlinks.length );
console.log( "Errors : " + errorlinks.length );
console.log( "Sources : " + sources.length );
};
// --> Grab All Links from ajax url
var GetAllLinksFromUrl = function( link, nowscan, onSuccess, onEnd, onTimeOut, onError ){
onSuccess = onSuccess || function(){};
onEnd = onEnd || function(){};
onTimeOut = onTimeOut || function(){};
onError = onError || function(){};
var grabed = [],
xhr = tools.GetXHR();
xhr.responseType = "document";
xhr.overrideMimeType( "text/html" );
xhr.open( "GET", link, true);
xhr.onload = function(){
if( xhr.readyState === xhr.DONE ){
checkedlinks.Unique( link );
if( xhr.status === 200 )onSuccess( xhr.responseXML, nowscan, link );
onEnd();
}
};
xhr.ontimeout = function( e ){
checkedlinks.Unique( link );
timeoutlinks.Unique( link );
onTimeOut();
onEnd();
}
xhr.onerror = function( e ){
checkedlinks.Unique( link );
errorlinks.Unique( link );
onError();
onEnd();
}
xhr.send( null );
};
// <-- Globals
// --> Define class feature
var CrawyCLS = function( options ){
// --> Reset global vars
stopped = false;
allinks = [];
workerlinks = [];
checkinglinks = [];
checkedlinks = [];
timeoutlinks = [];
errorlinks = [];
sources = [];
// --> Define options CrawyCLS
options = options || {};
options.pause = options.pause || 500;
options.autoscore = options.autoscore || false;
options.pagesallowed = options.pagesallowed || [];
options.pagesnotallowed = options.pagesnotallowed || [];
options.sourcecontext = options.sourcecontext || function(){};
autoscore = options.autoscore;
// --> Start Crawler
console.info( CrawyState.happy + " Crawling ..." );
document.title = "Crawling ...";
// --> All link on start page
checkedlinks.Unique( location.href );
checkinglinks.Unique( location.href );
allinks.Unique( location.href );
allinks.MergeUnique( tools.FilterInternalLinks( $( "a" ) ).OnlyUnique(), checkedlinks );
workerlinks.MergeUnique( allinks, checkedlinks );
// --> Iterator
var worker = function(){
// --> next step
if( workerlinks.length < 1 || stopped )return false;
var ti = setTimeout( function(){
// --> get links ?
var next = workerlinks[0];
workerlinks.splice( 0, 1 );
var nowscan = ( options.pagesallowed.length < 1 );
// --> Pages allowed ?
for( var x = 0; x < options.pagesallowed.length; x++ ){
var reallowedpage = new RegExp( "^" + options.pagesallowed[ x ], "gi" );
if( next.match( reallowedpage ) ){
nowscan = true;
break;
}
}
// --> Pages not allowed ?
for( var y = 0; nowscan && y < options.pagesnotallowed.length; y++ ){
var renotallowedpage = new RegExp( "^" + options.pagesnotallowed[ y ], "gi" );
if( next.match( renotallowedpage ) ){
nowscan = false;
break;
}
}
if( checkedlinks.indexOf( next ) < 0 ){
checkinglinks.Unique( next );
GetAllLinksFromUrl( next, nowscan, function( loadedDOM, xnowscan, url ){ // --> onSuccess
if( loadedDOM instanceof HTMLDocument ){
// --> Grab all new links
var allmylinks = tools.FilterInternalLinks( loadedDOM.querySelectorAll( "a" ) ).OnlyUnique();
if( allmylinks && allmylinks.length > 0 ){
allinks.MergeUnique( allmylinks );
workerlinks.MergeUnique( allmylinks, checkedlinks );
}
// --> Source exposed ?
if( xnowscan ){
var externaltest = options.sourcecontext( url, loadedDOM );
if( externaltest )sources.Unique( externaltest );
}
}
}, function(){ // --> onEnd
// --> Score
var percentage = ( checkedlinks.length / ( allinks.length / 100 ) );
percentage = percentage.toFixed( 0 );
percentage = ( percentage <= 100 ) ? percentage : 100;
document.title = percentage + "%";
if( autoscore )UpdateInfo();
if( stopped ){
UpdateInfo();
if( checkedlinks.length != checkinglinks.length ){
console.info( CrawyState.ehmm + " Stopping ..." );
document.title = "Stopping ...";
}else{
console.info( CrawyState.ehmm + " Stopped !" );
document.title = "Stopped !";
}
}else if( workerlinks.length < 1 && checkedlinks.length == checkinglinks.length ){
UpdateInfo();
console.info( CrawyState.yesss + " Crawled !" );
document.title = "Crawled !";
}
} );
} // <-- if
// --> next ...
worker();
// --> memory clean
clearTimeout( ti );
}, options.pause );
}; // <-- worker
if( allinks.length > 0 ){
worker();
}else{
console.warn( CrawyState.ehmm + " Ehmm, not links internal found in this page !" );
}
};
// --> Stop Crawler
CrawyCLS.Stop = function(){
stopped = true;
};
// --> Export All links grabbed
CrawyCLS.ExportAllLinks = function(){
if( allinks.length < 1 ){
console.warn( CrawyState.ehmm + " No links ..." );
alert( CrawyState.ehmm + " No links ..." );
}else{
tools.SaveToJSON( "CrawyAllLinks." + location.host, allinks );
}
};
// --> Export All sources grabbed
CrawyCLS.ExportAllSources = function(){
if( sources.length < 1 ){
console.warn( CrawyState.ehmm + " No sources ..." );
alert( CrawyState.ehmm + " No sources ..." );
}else{
tools.SaveToJSON( "CrawyAllSources." + location.host, sources );
}
};
// --> Toggle autoscore
CrawyCLS.ToggleAutoscore = function(){
autoscore = !autoscore;
};
// --> Show info
CrawyCLS.Score = function(){
UpdateInfo();
};
// <-- Define class feature
window.Crawy = CrawyCLS;
console.info( CrawyState.enjoy + " Hi, i am Crawy " + version + ", ready to work ..." );
document.title = "Crawy loaded !";
} )(
// --> Pass querySelectorAll reference
function( selector ){
return document.querySelectorAll( selector );
}
,
{ // --> tools
// --> Check if link is external
isExternalLink : function( a ){
var protolink = a.protocol + a.hostname,
protolocation = location.protocol + location.hostname;
return ( protolink !== protolocation );
}
,
// --> Escape RegExp
RegExpEscape : function( str ){
return ( str + "" ).replace( /[.?*+^$[\]\\(){}|-]/g, "\\$&" );
}
,
// --> Filter Internal links
FilterInternalLinks : function( links, mask ){
mask = mask || "";
mask = mask.trim();
var internal = [];
for( var i = 0; i < links.length; i++ ){
var href = links[ i ].getAttribute( "href" );
if( !href || href == "" )continue;
// --> RegExp expression rule if set
if( mask !== "" ){
var re = new RegExp( this.RegExpEscape( mask ), "gi" );
// console.info( "Mask match for href : " + href );
if( !href.match( re ) )continue;
}
if(
!this.isExternalLink( links[ i ] ) &&
href.indexOf( "#" ) < 0
)
internal.push( links[ i ].href );
}
return internal;
}
,
// --> XHR cross browser
GetXHR : function(){
try {
return new XMLHttpRequest();
}catch( e ){}
try {
return new ActiveXObject( "Msxml3.XMLHTTP" );
}catch( e ){}
try {
return new ActiveXObject( "Msxml2.XMLHTTP.6.0" );
}catch( e ){}
try {
return new ActiveXObject( "Msxml2.XMLHTTP.3.0" );
}catch( e ){}
try {
return new ActiveXObject( "Msxml2.XMLHTTP" );
}catch( e ){}
try {
return new ActiveXObject( "Microsoft.XMLHTTP" );
}catch( e ){}
return null;
}
,
// --> Save to JSON
SaveToJSON : function( name, content ){
name = name || "Crawy";
jsonsource = encodeURIComponent( JSON.stringify( content ) );
var a = document.body.appendChild( document.createElement( "a" ) );
a.innerHTML = "Download " + name + ".json";
a.setAttribute( "download", name + ".json" );
a.setAttribute( "href", "data:text/json;charset=utf-8," + jsonsource );
a.click();
}
} // <-- tools
);