Get String Char Array In One Line - Node.js String

Node.js examples for String:Char

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Description

Get String Char Array In One Line

Demo Code

/* js-charCode-display.js
 * CharCode Concersion/*from  ww  w .  j a  v  a2s .  c o m*/
 * 2014-11-1
 *
 * By Willian Zhang, https://github.com/Willian-Zhang
 * License: MIT
 *   
 */
String.prototype.getCharArrayInOneLine = function (withPrefix,isUTF16){
  if (typeof withPrefix == "undefined" || withPrefix == true) {
    withPrefix = '0x';
  }
  if (typeof isUTF16 == "undefined"|| isUTF16 == "UTF8") {
    isUTF16 = false;
  }
  var self = this;
  var toChar = function(position){
    var numString = withPrefix + self.charCodeAt(position).toString(16);
    if((!isUTF16) && numString.length <2){
      numString = '0'*(2 - numString.length) + numString;
    }else if(isUTF16 && numString.length < 4){
      numString = '0'*(4 - numString.length) + numString;
    }
    return numString;
  }
  var array = [];
  for (var i = 0; i < this.length; i++) {
    array.push(toChar(i));
  };
  return array;
}

String.prototype.getCharStringInOneLine = function (separator,withPrefix,isUTF16){
  if (typeof separator == "undefined") {
    separator = ' ';
  }
  return this.getCharArrayInOneLine(withPrefix,isUTF16).join(separator);
}

String.prototype.getCharArray = function (colPerRow,withPrefix,isUTF16,callback){ 
  if (typeof colPerRow == "undefined") {
    colPerRow = 10;
  }
  //Copy String
  var stringCopy = (this+' ').slice(0, this.length);
  var string = stringCopy;
  
  //into lines
  var rowLines = [];
  while(string.length>0){
    var line = string.slice(0, colPerRow);
    string = string.slice(colPerRow);
    rowLines.push(line);
  }
  var counter = 0;

  for (var i = rowLines.length - 1; i >= 0; i--) {
    var f = function(rowLines){
      rowLines[i] = rowLines[i].getCharArrayInOneLine(withPrefix,isUTF16);
      counter++;
      if (counter == rowLines.length) {
        if (typeof callback != "undefined") {
          callback(rowLines);
        }
      }
    }
    window.setTimeout(f(rowLines),1);
  }
  return rowLines;
}
String.prototype.getCharString = function (colPerRow,separator,lineSeparator,withPrefix,isUTF16,callback){ 
  if (typeof lineSeparator == "undefined") {
    lineSeparator = '\n';
  }
  if (typeof separator == "undefined") {
    separator = ' ';
  }
  var string = '';
  this.getCharArray(colPerRow,withPrefix,isUTF16,function(array){
    for (var i = 0; i < array.length; i++) {
      array[i] = array[i].join(separator);
    }
    string = array.join(lineSeparator);
    if (typeof callback != "undefined") {
      callback(string);
    }
  });
  return string;
}

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