diff options
Diffstat (limited to 'node_modules/validate-npm-package-license/index.js')
-rw-r--r-- | node_modules/validate-npm-package-license/index.js | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/node_modules/validate-npm-package-license/index.js b/node_modules/validate-npm-package-license/index.js new file mode 100644 index 000000000..2ad98d9d8 --- /dev/null +++ b/node_modules/validate-npm-package-license/index.js @@ -0,0 +1,84 @@ +var parse = require('spdx-expression-parse'); +var correct = require('spdx-correct'); + +var genericWarning = ( + 'license should be ' + + 'a valid SPDX license expression (without "LicenseRef"), ' + + '"UNLICENSED", or ' + + '"SEE LICENSE IN <filename>"' +); + +var fileReferenceRE = /^SEE LICEN[CS]E IN (.+)$/; + +function startsWith(prefix, string) { + return string.slice(0, prefix.length) === prefix; +} + +function usesLicenseRef(ast) { + if (ast.hasOwnProperty('license')) { + var license = ast.license; + return ( + startsWith('LicenseRef', license) || + startsWith('DocumentRef', license) + ); + } else { + return ( + usesLicenseRef(ast.left) || + usesLicenseRef(ast.right) + ); + } +} + +module.exports = function(argument) { + var ast; + + try { + ast = parse(argument); + } catch (e) { + var match + if ( + argument === 'UNLICENSED' || + argument === 'UNLICENCED' + ) { + return { + validForOldPackages: true, + validForNewPackages: true, + unlicensed: true + }; + } else if (match = fileReferenceRE.exec(argument)) { + return { + validForOldPackages: true, + validForNewPackages: true, + inFile: match[1] + }; + } else { + var result = { + validForOldPackages: false, + validForNewPackages: false, + warnings: [genericWarning] + }; + var corrected = correct(argument); + if (corrected) { + result.warnings.push( + 'license is similar to the valid expression "' + corrected + '"' + ); + } + return result; + } + } + + if (usesLicenseRef(ast)) { + return { + validForNewPackages: false, + validForOldPackages: false, + spdx: true, + warnings: [genericWarning] + }; + } else { + return { + validForNewPackages: true, + validForOldPackages: true, + spdx: true + }; + } +}; |