Censored pattern

Contribute Bug
8

Perhaps with the help of regular expressions it will not be possible to rewrite this. (
I tried it, but it’s a terrible option (the introduction of cycles.) It works, but this option is very bad.

Summary 
function escapeRegexp(text) {
  return text.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&');
}

export function censorFn(censoredWords, censoredPattern, replacementLetter) {

  let patterns = [];

  replacementLetter = replacementLetter || "■";

  if (censoredWords && censoredWords.length) {
    patterns = censoredWords.split("|").map(t => `(${escapeRegexp(t)})`);
  }

  if (censoredPattern && censoredPattern.length > 0) {
    patterns.push("(" + censoredPattern + ")");
  }

  if (patterns.length) {
    let censorRegexp;
    
    try {
        return function(text) {
          let original = text;
          let ind=0; 
            
          patterns.forEach(function(item, i, arr) {
            item=item.replace(')','');
            item=item.replace('(','');
                                                                                                                                                                                                                                                                
            original=maxsearch(original,item,ind);
            
           });
            return original;
        };    
    
    } catch(e) {
      // fall through
    }
  }

  return function(t){ return t;};
}

export function maxsearch(original,item,ind){ 
    let mas=original.split(' ');
    ind=mas.indexOf(item); 
    if (ind>=0){
        mas[ind]='…';
        return maxsearch(mas.join(' '),item,ind);
    }else{ 
        return mas.join(' ');
    }
}

export function censor(text, censoredWords, censoredPattern, replacementLetter) {
  return censorFn(censoredWords, censoredPattern, replacementLetter)(text);
}