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39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
5 years ago
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'use strict';
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var DiffMatchPatch = require('diff-match-patch');
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var dmp = new DiffMatchPatch();
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function udiff (config) {
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return function diff (text1, text2) {
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var patch;
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if (config && shouldUseLineLevelDiff(text1, config)) {
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patch = udiffLines(text1, text2);
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} else {
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patch = udiffChars(text1, text2);
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}
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return decodeURIComponent(patch);
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};
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}
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function shouldUseLineLevelDiff (text, config) {
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return config.lineDiffThreshold < text.split(/\r\n|\r|\n/).length;
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}
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function udiffLines(text1, text2) {
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/*jshint camelcase: false */
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var a = dmp.diff_linesToChars_(text1, text2);
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var diffs = dmp.diff_main(a.chars1, a.chars2, false);
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dmp.diff_charsToLines_(diffs, a.lineArray);
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dmp.diff_cleanupSemantic(diffs);
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return dmp.patch_toText(dmp.patch_make(text1, diffs));
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}
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function udiffChars (text1, text2) {
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/*jshint camelcase: false */
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var diffs = dmp.diff_main(text1, text2, false);
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dmp.diff_cleanupSemantic(diffs);
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return dmp.patch_toText(dmp.patch_make(text1, diffs));
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}
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module.exports = udiff;
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