✏ 编辑: word.js

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

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.diffWords = diffWords;
exports.diffWordsWithSpace = diffWordsWithSpace;
exports.wordDiff = void 0;

/*istanbul ignore end*/
var
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_base = _interopRequireDefault(require("./base"))
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;

var
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_params = require("../util/params")
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;

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

/*istanbul ignore end*/
// Based on https://en.wikipedia.org/wiki/Latin_script_in_Unicode
//
// Ranges and exceptions:
// Latin-1 Supplement, 0080–00FF
//  - U+00D7  × Multiplication sign
//  - U+00F7  ÷ Division sign
// Latin Extended-A, 0100–017F
// Latin Extended-B, 0180–024F
// IPA Extensions, 0250–02AF
// Spacing Modifier Letters, 02B0–02FF
//  - U+02C7  ˇ &#711;  Caron
//  - U+02D8  ˘ &#728;  Breve
//  - U+02D9  ˙ &#729;  Dot Above
//  - U+02DA  ˚ &#730;  Ring Above
//  - U+02DB  ˛ &#731;  Ogonek
//  - U+02DC  ˜ &#732;  Small Tilde
//  - U+02DD  ˝ &#733;  Double Acute Accent
// Latin Extended Additional, 1E00–1EFF
var extendedWordChars = /^[A-Za-z\xC0-\u02C6\u02C8-\u02D7\u02DE-\u02FF\u1E00-\u1EFF]+$/;
var reWhitespace = /\S/;
var wordDiff = new
/*istanbul ignore start*/
_base
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[
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"default"
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]();

/*istanbul ignore start*/
exports.wordDiff = wordDiff;

/*istanbul ignore end*/
wordDiff.equals = function (left, right) {
  if (this.options.ignoreCase) {
    left = left.toLowerCase();
    right = right.toLowerCase();
  }

return left === right || this.options.ignoreWhitespace && !reWhitespace.test(left) && !reWhitespace.test(right);
};

wordDiff.tokenize = function (value) {
  // All whitespace symbols except newline group into one token, each newline - in separate token
  var tokens = value.split(/([^\S\r\n]+|[()[\]{}'"\r\n]|\b)/); // Join the boundary splits that we do not consider to be boundaries. This is primarily the extended Latin character set.

for (var i = 0; i < tokens.length - 1; i++) {
    // If we have an empty string in the next field and we have only word chars before and after, merge
    if (!tokens[i + 1] && tokens[i + 2] && extendedWordChars.test(tokens[i]) && extendedWordChars.test(tokens[i + 2])) {
      tokens[i] += tokens[i + 2];
      tokens.splice(i + 1, 2);
      i--;
    }
  }

return tokens;
};

function diffWords(oldStr, newStr, options) {
  options =
  /*istanbul ignore start*/
  (0,
  /*istanbul ignore end*/

/*istanbul ignore start*/
  _params
  /*istanbul ignore end*/
  .
  /*istanbul ignore start*/
  generateOptions)
  /*istanbul ignore end*/
  (options, {
    ignoreWhitespace: true
  });
  return wordDiff.diff(oldStr, newStr, options);
}

function diffWordsWithSpace(oldStr, newStr, options) {
  return wordDiff.diff(oldStr, newStr, options);
}
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