1 line
15 KiB
JavaScript
1 line
15 KiB
JavaScript
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!function(t){var e=function(t){var n=new e.Index;return n.pipeline.add(e.stopWordFilter,e.stemmer),t&&t.call(n,n),n};e.version="0.4.3","undefined"!=typeof module&&(module.exports=e),e.utils={},e.utils.warn=function(t){return function(e){t.console&&console.warn&&console.warn(e)}}(this),e.utils.zeroFillArray=function(){var t=[0];return function(e){for(;e>t.length;)t=t.concat(t);return t.slice(0,e)}}(),e.EventEmitter=function(){this.events={}},e.EventEmitter.prototype.addListener=function(){var t=Array.prototype.slice.call(arguments),e=t.pop(),n=t;if("function"!=typeof e)throw new TypeError("last argument must be a function");n.forEach(function(t){this.hasHandler(t)||(this.events[t]=[]),this.events[t].push(e)},this)},e.EventEmitter.prototype.removeListener=function(t,e){if(this.hasHandler(t)){var n=this.events[t].indexOf(e);this.events[t].splice(n,1),this.events[t].length||delete this.events[t]}},e.EventEmitter.prototype.emit=function(t){if(this.hasHandler(t)){var e=Array.prototype.slice.call(arguments,1);this.events[t].forEach(function(t){t.apply(void 0,e)})}},e.EventEmitter.prototype.hasHandler=function(t){return t in this.events},e.tokenizer=function(t){if(!arguments.length||null==t||void 0==t)return[];if(Array.isArray(t))return t.map(function(t){return t.toLowerCase()});for(var e=(""+t).replace(/^\s+/,""),n=e.length-1;n>=0;n--)if(/\S/.test(e.charAt(n))){e=e.substring(0,n+1);break}return e.split(/\s+/).map(function(t){return t.replace(/^\W+/,"").replace(/\W+$/,"").toLowerCase()})},e.Pipeline=function(){this._stack=[]},e.Pipeline.registeredFunctions={},e.Pipeline.registerFunction=function(t,n){n in this.registeredFunctions&&e.utils.warn("Overwriting existing registered function: "+n),t.label=n,e.Pipeline.registeredFunctions[t.label]=t},e.Pipeline.warnIfFunctionNotRegistered=function(t){var n=t.label&&t.label in this.registeredFunctions;n||e.utils.warn("Function is not registered with pipeline. This may cause problems when serialising the index.\n",t)},e.Pipeline.load=function(t){var n=new e.Pipeline;return t.forEach(function(t){var i=e.Pipeline.registeredFunctions[t];if(!i)throw Error("Cannot load un-registered function: "+t);n.add(i)}),n},e.Pipeline.prototype.add=function(){var t=Array.prototype.slice.call(arguments);t.forEach(function(t){e.Pipeline.warnIfFunctionNotRegistered(t),this._stack.push(t)},this)},e.Pipeline.prototype.after=function(t,n){e.Pipeline.warnIfFunctionNotRegistered(n);var i=this._stack.indexOf(t)+1;this._stack.splice(i,0,n)},e.Pipeline.prototype.before=function(t,n){e.Pipeline.warnIfFunctionNotRegistered(n);var i=this._stack.indexOf(t);this._stack.splice(i,0,n)},e.Pipeline.prototype.remove=function(t){var e=this._stack.indexOf(t);this._stack.splice(e,1)},e.Pipeline.prototype.run=function(t){for(var e=[],n=t.length,i=this._stack.length,o=0;n>o;o++){for(var r=t[o],s=0;i>s&&(r=this._stack[s](r,o,t),void 0!==r);s++);void 0!==r&&e.push(r)}return e},e.Pipeline.prototype.toJSON=function(){return this._stack.map(function(t){return e.Pipeline.warnIfFunctionNotRegistered(t),t.label})},e.Vector=function(t){this.elements=t},e.Vector.prototype.magnitude=function(){if(this._magnitude)return this._magnitude;for(var t,e=0,n=this.elements,i=n.length,o=0;i>o;o++)t=n[o],e+=t*t;return this._magnitude=Math.sqrt(e)},e.Vector.prototype.dot=function(t){for(var e=this.elements,n=t.elements,i=e.length,o=0,r=0;i>r;r++)o+=e[r]*n[r];return o},e.Vector.prototype.similarity=function(t){return this.dot(t)/(this.magnitude()*t.magnitude())},e.Vector.prototype.toArray=function(){return this.elements},e.SortedSet=function(){this.length=0,this.elements=[]},e.SortedSet.load=function(t){var e=new this;return e.elements=t,e.length=t.length,e},e.SortedSet.prototype.add=function(){Array.prototype.slice.call(arguments).forEach(function(t){~this.indexOf(t)||this.elements.splice(this.locationFor(t),0,t)},this),this.length=this.elements.length},e.SortedSet.prototype.toArray=function(){return this.elements.slice()},e.SortedSet.prototype.map=function(t,e){return this.elements.map(t,e)},e.SortedSet.prototype.forEach=function(t,e){return this.eleme
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