2 lines
3.5 KiB
JavaScript
2 lines
3.5 KiB
JavaScript
/*! loop-protect | v1.0.1 | (c) 2016 Remy Sharp | http://jsbin.mit-license.org */
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!function(a,b){"use strict";"object"==typeof exports&&"object"==typeof module?module.exports=b(a):"function"==typeof define&&define.amd?define(b(a)):"object"==typeof exports?module.exports=b(a):a.loopProtect=b(a)}(this,function(a){"use strict";function b(a,b){if(0===a)return!1;var c=a,d=1,e=-1,f=-1;do{if(e=b[c].indexOf("*/"),f=b[c].indexOf("/*"),e!==-1&&d++,e===b[c].length-2&&f!==-1&&d--,f!==-1&&(d--,0===d))return!0;c-=1}while(c>=0);return!1}function c(a,b){for(var c;--a>-1;){if(c=b.substr(a,1),'"'===c||"'"===c||"."===c)return!0;if("/"===c||"*"===c){var d=b.substr(a-1,1);if("/"===d)return!0}}return!1}function d(a,b,c){h.lastIndex=0,i.lastIndex=0;var d=!1,e=c.slice(b).join("\n").substr(a).replace(i,"");return e.replace(h,function(a,b,c){var f=e.substr(0,c).replace(j,"").trim();0===f.length&&(d=!0)}),d}function e(a,e){function f(a,b,c){return b.slice(0,c)+"{;"+m+"({ line: "+a+", reset: true }); "+b.slice(c)}var h=[],j=a.split("\n"),l=!1,m=k.alias+".protect",n={},o={},p=null;return e||(e=0),j.forEach(function(a,k){if(g.lastIndex=0,i.lastIndex=0,!l){a.toLowerCase().indexOf("noprotect")!==-1&&(l=!0);var q=-1,r=-1,s=k,t=k-e+1,u="",v=!1,w=!1,x=!1,y=a.match(g)||[],z=y.length?y[0]:"",A=a.match(i)||[],B=0,C=0,D=!1;if(A.length&&(q=a.indexOf(A[1]),c(q,a)||b(k,j)||d(q,k,j)&&(p=k)),!n[k]){if(o[k])return void h.push(a);if(z&&1===y.length&&a.indexOf("jsbin")===-1){if(v="do"===z,r=q=a.indexOf(z),c(q,a))return void h.push(a);if(b(k,j))return void h.push(a);for(q=a.indexOf(z)+z.length,q===a.length&&q===a.length&&k<j.length-1&&(h.push(a),k++,a=j[k],n[k]=!0,q=0);q<a.length;){if(u=a.substr(q,1),"("===u&&B++,")"===u&&(B--,0===B&&x===!1&&(x=q)),"{"===u&&C++,"}"===u&&C--,0===B&&(";"===u||"{"===u)){if(";"===u)k!==s?(h[s]=h[s].substring(0,x+1)+"{\nif ("+m+"({ line: "+t+" })) break;\n"+h[s].substring(x+1),a+="\n}}\n"):a=a.substring(0,x+1)+"{\nif ("+m+"({ line: "+t+" })) break;\n"+a.substring(x+1)+"\n}}\n",D=!0;else if("{"===u){var E=";\nif ("+m+"({ line: "+t+" })) break;\n";a=a.substring(0,q+1)+E+a.substring(q+1),q+=E.length}if(k===s&&null===p?(a=f(t,a,r),q+=(";"+m+"({ line: "+k+", reset: true }); ").length):null===p?h[s]=f(t,h[s],r):(void 0===h[p]&&(p--,r=0),h[p]=f(t,h[p],r),p=null),v){for(w=!1;q<a.length;){if(u=a.substr(q,1),"{"===u&&C++,"}"===u&&C--,w=0===C,w&&a.indexOf("while")!==-1)return a+="}",h.push(a),void(n[k]=!0);q++,q===a.length&&k<j.length-1&&(h.push(a),n[k]=!0,k++,a=j[k],q=0)}return}if(D)return void h.push(a);for(;null!==a;){if(u=a.substr(q,1),"{"===u&&C++,"}"===u&&(C--,0===C))return a=a.substring(0,q+1)+"}"+a.substring(q+1),h.push(a),void(n[k]=!0);q++,q>=a.length&&(h.push(a),n[k]=!0,k++,a=j[k],q=0)}return}q++,q===a.length&&k<j.length-1&&(h.push(a),k++,a=j[k],n[k]=!0,q=0)}}else h.push(a)}}}),l?a:h.join("\n")}var f=null,g=/\b(for|while|do)\b/g,h=/\b(for|while|do)\b/,i=/\b(?!default:)([a-z_]{1}\w+:)/i,j=/(?:\/\*(?:[\s\S]*?)\*\/)|(?:([\s;])+\/\/(?:.*)$)/gm,k=e;return k.counters={},k.debug=function(a){f=a?function(){console.log.apply(console,[].slice.apply(arguments))}:function(){}},k.debug(!1),k.alias="loopProtect",k.protect=function(a){k.counters[a.line]=k.counters[a.line]||{};var b=k.counters[a.line],c=(new Date).getTime();return a.reset&&(b.time=c,b.hit=0,b.last=0),b.hit++,c-b.time>500?(k.hit(a.line),!0):(b.last++,!1)},k.hit=function(b){var c="Exiting potential infinite loop at line "+b+'. To disable loop protection: add "// noprotect" to your code';a.proxyConsole?a.proxyConsole.error(c):console.error(c)},k.reset=function(){k.counters={}},k}); |