80 lines
2.5 KiB
JavaScript
80 lines
2.5 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
Object.defineProperty(exports, '__esModule', {
|
||
|
|
value: true
|
||
|
|
});
|
||
|
|
exports.diffStringsUnified = exports.diffStringsRaw = void 0;
|
||
|
|
var _cleanupSemantic = require('./cleanupSemantic');
|
||
|
|
var _diffLines = require('./diffLines');
|
||
|
|
var _diffStrings = _interopRequireDefault(require('./diffStrings'));
|
||
|
|
var _getAlignedDiffs = _interopRequireDefault(require('./getAlignedDiffs'));
|
||
|
|
var _normalizeDiffOptions = require('./normalizeDiffOptions');
|
||
|
|
function _interopRequireDefault(obj) {
|
||
|
|
return obj && obj.__esModule ? obj : {default: obj};
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* This source code is licensed under the MIT license found in the
|
||
|
|
* LICENSE file in the root directory of this source tree.
|
||
|
|
*/
|
||
|
|
|
||
|
|
const hasCommonDiff = (diffs, isMultiline) => {
|
||
|
|
if (isMultiline) {
|
||
|
|
// Important: Ignore common newline that was appended to multiline strings!
|
||
|
|
const iLast = diffs.length - 1;
|
||
|
|
return diffs.some(
|
||
|
|
(diff, i) =>
|
||
|
|
diff[0] === _cleanupSemantic.DIFF_EQUAL &&
|
||
|
|
(i !== iLast || diff[1] !== '\n')
|
||
|
|
);
|
||
|
|
}
|
||
|
|
return diffs.some(diff => diff[0] === _cleanupSemantic.DIFF_EQUAL);
|
||
|
|
};
|
||
|
|
|
||
|
|
// Compare two strings character-by-character.
|
||
|
|
// Format as comparison lines in which changed substrings have inverse colors.
|
||
|
|
const diffStringsUnified = (a, b, options) => {
|
||
|
|
if (a !== b && a.length !== 0 && b.length !== 0) {
|
||
|
|
const isMultiline = a.includes('\n') || b.includes('\n');
|
||
|
|
|
||
|
|
// getAlignedDiffs assumes that a newline was appended to the strings.
|
||
|
|
const diffs = diffStringsRaw(
|
||
|
|
isMultiline ? `${a}\n` : a,
|
||
|
|
isMultiline ? `${b}\n` : b,
|
||
|
|
true // cleanupSemantic
|
||
|
|
);
|
||
|
|
|
||
|
|
if (hasCommonDiff(diffs, isMultiline)) {
|
||
|
|
const optionsNormalized = (0, _normalizeDiffOptions.normalizeDiffOptions)(
|
||
|
|
options
|
||
|
|
);
|
||
|
|
const lines = (0, _getAlignedDiffs.default)(
|
||
|
|
diffs,
|
||
|
|
optionsNormalized.changeColor
|
||
|
|
);
|
||
|
|
return (0, _diffLines.printDiffLines)(lines, optionsNormalized);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Fall back to line-by-line diff.
|
||
|
|
return (0, _diffLines.diffLinesUnified)(
|
||
|
|
a.split('\n'),
|
||
|
|
b.split('\n'),
|
||
|
|
options
|
||
|
|
);
|
||
|
|
};
|
||
|
|
|
||
|
|
// Compare two strings character-by-character.
|
||
|
|
// Optionally clean up small common substrings, also known as chaff.
|
||
|
|
exports.diffStringsUnified = diffStringsUnified;
|
||
|
|
const diffStringsRaw = (a, b, cleanup) => {
|
||
|
|
const diffs = (0, _diffStrings.default)(a, b);
|
||
|
|
if (cleanup) {
|
||
|
|
(0, _cleanupSemantic.cleanupSemantic)(diffs); // impure function
|
||
|
|
}
|
||
|
|
|
||
|
|
return diffs;
|
||
|
|
};
|
||
|
|
exports.diffStringsRaw = diffStringsRaw;
|