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20 lines
574 B
JavaScript
20 lines
574 B
JavaScript
/**
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* Takes a full filename string and returns an object {name, extension}
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*
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* @param {string} fullFileName
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* @returns {object} {name, extension}
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*/
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export default function getFileNameAndExtension (fullFileName) {
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const lastDot = fullFileName.lastIndexOf('.')
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// these count as no extension: "no-dot", "trailing-dot."
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if (lastDot === -1 || lastDot === fullFileName.length - 1) {
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return {
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name: fullFileName,
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extension: undefined,
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}
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}
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return {
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name: fullFileName.slice(0, lastDot),
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extension: fullFileName.slice(lastDot + 1),
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}
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}
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