86 lines
1.9 KiB
JavaScript
86 lines
1.9 KiB
JavaScript
var parse = require('spdx-expression-parse');
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var correct = require('spdx-correct');
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var genericWarning = (
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'license should be ' +
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'a valid SPDX license expression (without "LicenseRef"), ' +
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'"UNLICENSED", or ' +
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'"SEE LICENSE IN <filename>"'
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);
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var fileReferenceRE = /^SEE LICEN[CS]E IN (.+)$/;
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function startsWith(prefix, string) {
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return string.slice(0, prefix.length) === prefix;
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}
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function usesLicenseRef(ast) {
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if (ast.hasOwnProperty('license')) {
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var license = ast.license;
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return (
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startsWith('LicenseRef', license) ||
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startsWith('DocumentRef', license)
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);
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} else {
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return (
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usesLicenseRef(ast.left) ||
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usesLicenseRef(ast.right)
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);
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}
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}
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module.exports = function(argument) {
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var ast;
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try {
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ast = parse(argument);
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} catch (e) {
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var match
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if (
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argument === 'UNLICENSED' ||
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argument === 'UNLICENCED'
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) {
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return {
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validForOldPackages: true,
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validForNewPackages: true,
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unlicensed: true
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};
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} else if (match = fileReferenceRE.exec(argument)) {
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return {
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validForOldPackages: true,
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validForNewPackages: true,
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inFile: match[1]
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};
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} else {
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var result = {
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validForOldPackages: false,
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validForNewPackages: false,
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warnings: [genericWarning]
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};
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if (argument.trim().length !== 0) {
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var corrected = correct(argument);
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if (corrected) {
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result.warnings.push(
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'license is similar to the valid expression "' + corrected + '"'
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);
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}
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}
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return result;
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}
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}
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if (usesLicenseRef(ast)) {
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return {
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validForNewPackages: false,
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validForOldPackages: false,
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spdx: true,
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warnings: [genericWarning]
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};
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} else {
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return {
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validForNewPackages: true,
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validForOldPackages: true,
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spdx: true
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};
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}
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};
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