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17 lines
1.9 KiB
JavaScript
17 lines
1.9 KiB
JavaScript
/*
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didYouMean.js copyright (c) 2013-2014 Dave Porter.
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[Available on GitHub](https://github.com/dcporter/didyoumean.js).
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License
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[here](http://www.apache.org/licenses/LICENSE-2.0).
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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(function(){"use strict";function e(t,r,i){if(!t)return null;if(!e.caseSensitive){t=t.toLowerCase()}var s=e.threshold===null?null:e.threshold*t.length,o=e.thresholdAbsolute,u;if(s!==null&&o!==null)u=Math.min(s,o);else if(s!==null)u=s;else if(o!==null)u=o;else u=null;var a,f,l,c,h,p=r.length;for(h=0;h<p;h++){f=r[h];if(i){f=f[i]}if(!f){continue}if(!e.caseSensitive){l=f.toLowerCase()}else{l=f}c=n(t,l,u);if(u===null||c<u){u=c;if(i&&e.returnWinningObject)a=r[h];else a=f;if(e.returnFirstMatch)return a}}return a||e.nullResultValue}function n(e,n,r){r=r||r===0?r:t;var i=e.length;var s=n.length;if(i===0)return Math.min(r+1,s);if(s===0)return Math.min(r+1,i);if(Math.abs(i-s)>r)return r+1;var o=[],u,a,f,l,c;for(u=0;u<=s;u++){o[u]=[u]}for(a=0;a<=i;a++){o[0][a]=a}for(u=1;u<=s;u++){f=t;l=1;if(u>r)l=u-r;c=s+1;if(c>r+u)c=r+u;for(a=1;a<=i;a++){if(a<l||a>c){o[u][a]=r+1}else{if(n.charAt(u-1)===e.charAt(a-1)){o[u][a]=o[u-1][a-1]}else{o[u][a]=Math.min(o[u-1][a-1]+1,Math.min(o[u][a-1]+1,o[u-1][a]+1))}}if(o[u][a]<f)f=o[u][a]}if(f>r)return r+1}return o[s][i]}e.threshold=.4;e.thresholdAbsolute=20;e.caseSensitive=false;e.nullResultValue=null;e.returnWinningObject=null;e.returnFirstMatch=false;if(typeof module!=="undefined"&&module.exports){module.exports=e}else{window.didYouMean=e}var t=Math.pow(2,32)-1})(); |