33 lines
651 B
JavaScript
33 lines
651 B
JavaScript
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class HighlightLines {
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constructor(rangeStr) {
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this.highlights = this.convertRangeToHash(rangeStr);
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}
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convertRangeToHash(rangeStr) {
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let hash = {};
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if( !rangeStr ) {
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return hash;
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}
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let ranges = rangeStr.split(",").map(function(range) {
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return range.trim();
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});
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for(let range of ranges) {
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let startFinish = range.split('-');
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let start = parseInt(startFinish[0], 10);
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let end = parseInt(startFinish[1] || start, 10);
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for( let j = start, k = end; j<=k; j++ ) {
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hash[j] = true;
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}
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}
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return hash;
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}
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isHighlighted(lineNumber) {
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return !!this.highlights[lineNumber]
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}
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}
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module.exports = HighlightLines;
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