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node_modules/renderkid/lib/layout/block/linePrependor/Default.js 1.96 KB
aaac7fed   liuqimichale   add
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  // Generated by CoffeeScript 1.9.3
  var DefaultLinePrependor, SpecialString, tools,
    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    hasProp = {}.hasOwnProperty;
  
  tools = require('../../../tools');
  
  SpecialString = require('../../SpecialString');
  
  module.exports = DefaultLinePrependor = (function(superClass) {
    var self;
  
    extend(DefaultLinePrependor, superClass);
  
    function DefaultLinePrependor() {
      return DefaultLinePrependor.__super__.constructor.apply(this, arguments);
    }
  
    self = DefaultLinePrependor;
  
    DefaultLinePrependor.pad = function(howMuch) {
      return tools.repeatString(" ", howMuch);
    };
  
    DefaultLinePrependor.prototype._render = function(inherited, options) {
      var addToLeft, addToRight, alignment, bullet, char, charLen, diff, left, output, space, toWrite;
      if (this._lineNo === 0 && (bullet = this._config.bullet)) {
        char = bullet.char;
        charLen = SpecialString(char).length;
        alignment = bullet.alignment;
        space = this._config.amount;
        toWrite = char;
        addToLeft = '';
        addToRight = '';
        if (space > charLen) {
          diff = space - charLen;
          if (alignment === 'right') {
            addToLeft = self.pad(diff);
          } else if (alignment === 'left') {
            addToRight = self.pad(diff);
          } else if (alignment === 'center') {
            left = Math.round(diff / 2);
            addToLeft = self.pad(left);
            addToRight = self.pad(diff - left);
          } else {
            throw Error("Unknown alignment `" + alignment + "`");
          }
        }
        output = addToLeft + char + addToRight;
      } else {
        output = self.pad(this._config.amount);
      }
      return inherited + output;
    };
  
    return DefaultLinePrependor;
  
  })(require('./_LinePrependor'));