book-functions.js

  /* internal function to do nasty character splitting if we can't split on space */
    var splitOnChars = function(longStr) {

      var arr = longStr.split('');
      var count = 0;
      var str = '';
      for(var n=0; n < arr.length; n++) {
        str += arr[n];
        if(count==spBook.Settings.fixedLine) {
          str+=spBook.Settings.breakInsert;
          count=0;
        }
        count++;
      }
      return str;
    }

    /* add the line-breaking character to long lines in code. */
    var initLineBreaks = function() {


      // find all code blocks
      var codeList = document.querySelectorAll("code pre");
      forEach(codeList, function (index, value) {
        var thisBlock = value.innerHTML;
        var thisBlockLines = thisBlock.split("\n");

        var codeOut = '';
        for(var i=0; i < thisBlockLines.length; i++) {
          trimLine = thisBlockLines[i].trim();
          // is the line longer than the fixedLine value?
          if(trimLine.length > spBook.Settings.fixedLine) {

              // is there a space in the line or is this just a jumbo unbroken line?
              var spaceChar = trimLine.lastIndexOf(' ');
              if(spaceChar == -1) {
                // do nasty character split
                codeOut+= splitOnChars(trimLine);
              } else {
                // we have the promise of a space, let us see if we can do something nicer.
                //split on space
                var words = trimLine.split(' ');
                // loop through test whether adding item would make string longer than fixedLine.length
                var str = '';

                for(var n=0; n < words.length; n++) {
                  if(str.length+words[n].length > spBook.Settings.fixedLine) {
                    // split after str, don't add item, item becomes new str
                    str+=spBook.Settings.breakInsert;
                    codeOut+=str;
                    str = words[n];
                  } else {
                    // add this item to str
                    str+= ' '+words[n];
                  }

                }
                // add any remaining characters to str.
                codeOut+=str + "\n";
              }


          } else {
            // just pass this back out unaltered.
            codeOut+=thisBlockLines[i] + "\n";
          }
        }
        value.innerHTML = codeOut;
      });

    }