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Address GFDL Ranges #16

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Address GFDL Ranges #16

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0d75c17
Add GFDL range tests to README
kemitchell Jul 6, 2023
4c14905
Don't normalize away range suffixes for GFDLs
kemitchell Jul 6, 2023
2617c21
Implement `startsWith` via `indexOf`
kemitchell Oct 3, 2023
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4 changes: 4 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,10 @@ assert(satisfies('GPL-2.0', 'GPL-2.0+'))
assert(satisfies('GPL-2.0-only', 'GPL-2.0+'))
assert(satisfies('GPL-2.0', 'GPL-2.0-or-later'))

assert(satisfies('GFDL-1.1-invariants-or-later', 'GFDL-1.2-invariants-only'))
assert(satisfies('GFDL-1.1-invariants-or-later', 'GFDL-1.2-invariants-or-later'))
assert(!satisfies('GFDL-1.1-invariants-only', 'GFDL-1.2-invariants-or-later'))

assert(!satisfies(
'GPL-2.0',
'GPL-2.0+ WITH Bison-exception-2.2'
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9 changes: 7 additions & 2 deletions index.js
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Expand Up @@ -61,11 +61,12 @@ var licensesAreCompatible = function (first, second) {
function normalizeGPLIdentifiers (argument) {
var license = argument.license
if (license) {
var isGFDL = startsWith(license, 'GFDL-')
if (endsWith(license, '-or-later')) {
argument.license = license.replace('-or-later', '')
if (!isGFDL) argument.license = license.replace('-or-later', '')
argument.plus = true
} else if (endsWith(license, '-only')) {
argument.license = license.replace('-only', '')
if (!isGFDL) argument.license = license.replace('-only', '')
delete argument.plus
}
} else if (argument.left && argument.right) {
Expand All @@ -75,6 +76,10 @@ function normalizeGPLIdentifiers (argument) {
return argument
}

function startsWith (string, substring) {
return string.indexOf(substring) === 0
}

function endsWith (string, substring) {
return string.indexOf(substring) === string.length - substring.length
}
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