fuse.min.js

/**
 * @license
 * Fuse - Lightweight fuzzy-search
 *
 * Copyright (c) 2012-2016 Kirollos Risk <kirollos@gmail.com>.
 * All Rights Reserved. Apache Software License 2.0
 *
 * Licensed 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.
 */
!function(t){"use strict";function e(){console.log.apply(console,arguments)}function s(t,e){var s,n,o,i;for(this.list=t,this.options=e=e||{},s=0,i=["sort","shouldSort","verbose","tokenize"],n=i.length;n>s;s++)o=i[s],this.options[o]=o in e?e[o]:r[o];for(s=0,i=["searchFn","sortFn","keys","getFn","include","tokenSeparator"],n=i.length;n>s;s++)o=i[s],this.options[o]=e[o]||r[o]}function n(t,e,s){var i,r,h,a,p,c;if(e){if(h=e.indexOf("."),-1!==h?(i=e.slice(0,h),r=e.slice(h+1)):i=e,a=t[i],null!==a&&void 0!==a)if(r||"string"!=typeof a&&"number"!=typeof a)if(o(a))for(p=0,c=a.length;c>p;p++)n(a[p],r,s);else r&&n(a,r,s);else s.push(a)}else s.push(t);return s}function o(t){return"[object Array]"===Object.prototype.toString.call(t)}function i(t,e){e=e||{},this.options=e,this.options.location=e.location||i.defaultOptions.location,this.options.distance="distance"in e?e.distance:i.defaultOptions.distance,this.options.threshold="threshold"in e?e.threshold:i.defaultOptions.threshold,this.options.maxPatternLength=e.maxPatternLength||i.defaultOptions.maxPatternLength,this.pattern=e.caseSensitive?t:t.toLowerCase(),this.patternLen=t.length,this.patternLen<=this.options.maxPatternLength&&(this.matchmask=1<<this.patternLen-1,this.patternAlphabet=this._calculatePatternAlphabet())}var r={id:null,caseSensitive:!1,include:[],shouldSort:!0,searchFn:i,sortFn:function(t,e){return t.score-e.score},getFn:n,keys:[],verbose:!1,tokenize:!1,tokenSeparator:/ +/g};s.VERSION="2.4.1",s.prototype.set=function(t){return this.list=t,t},s.prototype.search=function(t){this.options.verbose&&e("\nSearch term:",t,"\n"),this.pattern=t,this.results=[],this.resultMap={},this._keyMap=null,this._prepareSearchers(),this._startSearch(),this._computeScore(),this._sort();var s=this._format();return s},s.prototype._prepareSearchers=function(){var t=this.options,e=this.pattern,s=t.searchFn,n=e.split(t.tokenSeparator),o=0,i=n.length;if(this.options.tokenize)for(this.tokenSearchers=[];i>o;o++)this.tokenSearchers.push(new s(n[o],t));this.fullSeacher=new s(e,t)},s.prototype._startSearch=function(){var t,e,s,n,o=this.options,i=o.getFn,r=this.list,h=r.length,a=this.options.keys,p=a.length,c=null;if("string"==typeof r[0])for(s=0;h>s;s++)this._analyze("",r[s],s,s);else for(this._keyMap={},s=0;h>s;s++)for(c=r[s],n=0;p>n;n++){if(t=a[n],"string"!=typeof t){if(e=1-t.weight||1,this._keyMap[t.name]={weight:e},t.weight<=0||t.weight>1)throw new Error("Key weight has to be > 0 and <= 1");t=t.name}else this._keyMap[t]={weight:1};this._analyze(t,i(c,t,[]),c,s)}},s.prototype._analyze=function(t,s,n,i){var r,h,a,p,c,l,u,f,d,g,m,y,v,S=this.options,k=!1;if(void 0!==s&&null!==s)if(h=[],"string"==typeof s){if(r=s.split(S.tokenSeparator),S.verbose&&e("---------\nKey:",t),this.options.tokenize){for(y=0;y<this.tokenSearchers.length;y++){for(f=this.tokenSearchers[y],S.verbose&&e("Pattern:",f.pattern),d=[],v=0;v<r.length;v++){g=r[v],m=f.search(g);var b={};m.isMatch?(b[g]=m.score,k=!0,h.push(m.score)):(b[g]=1,h.push(1)),d.push(b)}S.verbose&&e("Token scores:",d)}for(p=h[0],l=h.length,y=1;l>y;y++)p+=h[y];p/=l,S.verbose&&e("Token score average:",p)}u=this.fullSeacher.search(s),S.verbose&&e("Full text score:",u.score),c=u.score,void 0!==p&&(c=(c+p)/2),S.verbose&&e("Score average:",c),(k||u.isMatch)&&(a=this.resultMap[i],a?a.output.push({key:t,score:c,matchedIndices:u.matchedIndices}):(this.resultMap[i]={item:n,output:[{key:t,score:c,matchedIndices:u.matchedIndices}]},this.results.push(this.resultMap[i])))}else if(o(s))for(y=0;y<s.length;y++)this._analyze(t,s[y],n,i)},s.prototype._computeScore=function(){var t,s,n,o,i,r,h,a,p,c=this._keyMap,l=this.results;for(this.options.verbose&&e("\n\nComputing score:\n"),t=0;t<l.length;t++){for(n=0,o=l[t].output,i=o.length,a=1,s=0;i>s;s++)r=o[s].score,h=c?c[o[s].key].weight:1,p=r*h,1!==h?a=Math.min(a,p):(n+=p,o[s].nScore=p);1===a?l[t].score=n/i:l[t].score=a,this.options.verbose&&e(l[t])}},s.prototype._sort=function(){var t=this.options;t.shouldSort&&(t.verbose&&e("\n\nSorting...."),this.results.sort(t.sortFn))},s.prototype._format=function(){var t,s,n,o,i,r=this.options,h=r.getFn,a=[],p=this.results,c=r.include;for(r.verbose&&e("\n\nOutput:\n\n",p),o=r.id?function(t){p[t].item=h(p[t].item,r.id,[])[0]}:function(){},i=function(t){var e,s,n,o,i,r=p[t];if(c.length>0){if(e={item:r.item},-1!==c.indexOf("matches"))for(n=r.output,e.matches=[],s=0;s<n.length;s++)o=n[s],i={indices:o.matchedIndices},o.key&&(i.key=o.key),e.matches.push(i);-1!==c.indexOf("score")&&(e.score=p[t].score)}else e=r.item;return e},s=0,n=p.length;n>s;s++)o(s),t=i(s),a.push(t);return a},i.defaultOptions={location:0,distance:100,threshold:.6,maxPatternLength:32},i.prototype._calculatePatternAlphabet=function(){var t={},e=0;for(e=0;e<this.patternLen;e++)t[this.pattern.charAt(e)]=0;for(e=0;e<this.patternLen;e++)t[this.pattern.charAt(e)]|=1<<this.pattern.length-e-1;return t},i.prototype._bitapScore=function(t,e){var s=t/this.patternLen,n=Math.abs(this.options.location-e);return this.options.distance?s+n/this.options.distance:n?1:s},i.prototype.search=function(t){var e,s,n,o,i,r,h,a,p,c,l,u,f,d,g,m,y,v,S,k,b,_,M=this.options;if(t=M.caseSensitive?t:t.toLowerCase(),this.pattern===t)return{isMatch:!0,score:0,matchedIndices:[[0,t.length-1]]};if(this.patternLen>M.maxPatternLength){if(y=t.match(new RegExp(this.pattern.replace(M.tokenSeparator,"|"))),v=!!y)for(k=[],e=0,b=y.length;b>e;e++)_=y[e],k.push([t.indexOf(_),_.length-1]);return{isMatch:v,score:v?.5:1,matchedIndices:k}}for(o=M.location,n=t.length,i=M.threshold,r=t.indexOf(this.pattern,o),S=[],e=0;n>e;e++)S[e]=0;for(-1!=r&&(i=Math.min(this._bitapScore(0,r),i),r=t.lastIndexOf(this.pattern,o+this.patternLen),-1!=r&&(i=Math.min(this._bitapScore(0,r),i))),r=-1,g=1,m=[],p=this.patternLen+n,e=0;e<this.patternLen;e++){for(h=0,a=p;a>h;)this._bitapScore(e,o+a)<=i?h=a:p=a,a=Math.floor((p-h)/2+h);for(p=a,c=Math.max(1,o-a+1),l=Math.min(o+a,n)+this.patternLen,u=Array(l+2),u[l+1]=(1<<e)-1,s=l;s>=c;s--)if(d=this.patternAlphabet[t.charAt(s-1)],d&&(S[s-1]=1),0===e?u[s]=(u[s+1]<<1|1)&d:u[s]=(u[s+1]<<1|1)&d|((f[s+1]|f[s])<<1|1)|f[s+1],u[s]&this.matchmask&&(g=this._bitapScore(e,s-1),i>=g)){if(i=g,r=s-1,m.push(r),!(r>o))break;c=Math.max(1,2*o-r)}if(this._bitapScore(e+1,o)>i)break;f=u}return k=this._getMatchedIndices(S),{isMatch:r>=0,score:0===g?.001:g,matchedIndices:k}},i.prototype._getMatchedIndices=function(t){for(var e,s=[],n=-1,o=-1,i=0,r=t.length;r>i;i++)e=t[i],e&&-1===n?n=i:e||-1===n||(o=i-1,s.push([n,o]),n=-1);return t[i-1]&&s.push([n,i-1]),s},"object"==typeof exports?module.exports=s:"function"==typeof define&&define.amd?define(function(){return s}):t.Fuse=s}(this);