/*istanbul ignore start*/'use strict';

exports.__esModule = true;
exports.lineDiff = undefined;
exports. /*istanbul ignore end*/diffLines = diffLines;
/*istanbul ignore start*/exports. /*istanbul ignore end*/diffTrimmedLines = diffTrimmedLines;

var /*istanbul ignore start*/_base = require('./base') /*istanbul ignore end*/;

/*istanbul ignore start*/
var _base2 = _interopRequireDefault(_base);

/*istanbul ignore end*/
var /*istanbul ignore start*/_params = require('../util/params') /*istanbul ignore end*/;

/*istanbul ignore start*/
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/*istanbul ignore end*/var lineDiff = /*istanbul ignore start*/exports. /*istanbul ignore end*/lineDiff = new /*istanbul ignore start*/_base2.default() /*istanbul ignore end*/;
lineDiff.tokenize = function (value) {
  var retLines = [],
      linesAndNewlines = value.split(/(\n|\r\n)/);

  // Ignore the final empty token that occurs if the string ends with a new line
  if (!linesAndNewlines[linesAndNewlines.length - 1]) {
    linesAndNewlines.pop();
  }

  // Merge the content and line separators into single tokens
  for (var i = 0; i < linesAndNewlines.length; i++) {
    var line = linesAndNewlines[i];

    if (i % 2 && !this.options.newlineIsToken) {
      retLines[retLines.length - 1] += line;
    } else {
      if (this.options.ignoreWhitespace) {
        line = line.trim();
      }
      retLines.push(line);
    }
  }

  return retLines;
};

function diffLines(oldStr, newStr, callback) {
  return lineDiff.diff(oldStr, newStr, callback);
}
function diffTrimmedLines(oldStr, newStr, callback) {
  var options = /*istanbul ignore start*/(0, _params.generateOptions) /*istanbul ignore end*/(callback, { ignoreWhitespace: true });
  return lineDiff.diff(oldStr, newStr, options);
}
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