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eric sciple 2020-01-24 12:22:34 -05:00
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4
node_modules/spdx-expression-parse/AUTHORS generated vendored
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C. Scott Ananian <cscott@cscott.net> (http://cscott.net)
Kyle E. Mitchell <kyle@kemitchell.com> (https://kemitchell.com)
Shinnosuke Watanabe <snnskwtnb@gmail.com>
Antoine Motet <antoine.motet@gmail.com>

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node_modules/spdx-expression-parse/LICENSE generated vendored
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The MIT License
Copyright (c) 2015 Kyle E. Mitchell & other authors listed in AUTHORS
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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node_modules/spdx-expression-parse/README.md generated vendored
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This package parses [SPDX license expression](https://spdx.org/spdx-specification-21-web-version#h.jxpfx0ykyb60) strings describing license terms, like [package.json license strings](https://docs.npmjs.com/files/package.json#license), into consistently structured ECMAScript objects. The npm command-line interface depends on this package, as do many automatic license-audit tools.
In a nutshell:
```javascript
var parse = require('spdx-expression-parse')
var assert = require('assert')
assert.deepEqual(
// Licensed under the terms of the Two-Clause BSD License.
parse('BSD-2-Clause'),
{license: 'BSD-2-Clause'}
)
assert.throws(function () {
// An invalid SPDX license expression.
// Should be `Apache-2.0`.
parse('Apache 2')
})
assert.deepEqual(
// Dual licensed under either:
// - LGPL 2.1
// - a combination of Three-Clause BSD and MIT
parse('(LGPL-2.1 OR BSD-3-Clause AND MIT)'),
{
left: {license: 'LGPL-2.1'},
conjunction: 'or',
right: {
left: {license: 'BSD-3-Clause'},
conjunction: 'and',
right: {license: 'MIT'}
}
}
)
```
The syntax comes from the [Software Package Data eXchange (SPDX)](https://spdx.org/), a standard from the [Linux Foundation](https://www.linuxfoundation.org) for shareable data about software package license terms. SPDX aims to make sharing and auditing license data easy, especially for users of open-source software.
The bulk of the SPDX standard describes syntax and semantics of XML metadata files. This package implements two lightweight, plain-text components of that larger standard:
1. The [license list](https://spdx.org/licenses), a mapping from specific string identifiers, like `Apache-2.0`, to standard form license texts and bolt-on license exceptions. The [spdx-license-ids](https://www.npmjs.com/package/spdx-exceptions) and [spdx-exceptions](https://www.npmjs.com/package/spdx-license-ids) packages implement the license list. `spdx-expression-parse` depends on and `require()`s them.
Any license identifier from the license list is a valid license expression:
```javascript
var identifiers = []
.concat(require('spdx-license-ids'))
.concat(require('spdx-license-ids/deprecated'))
identifiers.forEach(function (id) {
assert.deepEqual(parse(id), {license: id})
})
```
So is any license identifier `WITH` a standardized license exception:
```javascript
identifiers.forEach(function (id) {
require('spdx-exceptions').forEach(function (e) {
assert.deepEqual(
parse(id + ' WITH ' + e),
{license: id, exception: e}
)
})
})
```
2. The license expression language, for describing simple and complex license terms, like `MIT` for MIT-licensed and `(GPL-2.0 OR Apache-2.0)` for dual-licensing under GPL 2.0 and Apache 2.0. `spdx-expression-parse` itself implements license expression language, exporting a parser.
```javascript
assert.deepEqual(
// Licensed under a combination of:
// - the MIT License AND
// - a combination of:
// - LGPL 2.1 (or a later version) AND
// - Three-Clause BSD
parse('(MIT AND (LGPL-2.1+ AND BSD-3-Clause))'),
{
left: {license: 'MIT'},
conjunction: 'and',
right: {
left: {license: 'LGPL-2.1', plus: true},
conjunction: 'and',
right: {license: 'BSD-3-Clause'}
}
}
)
```
The Linux Foundation and its contributors license the SPDX standard under the terms of [the Creative Commons Attribution License 3.0 Unported (SPDX: "CC-BY-3.0")](http://spdx.org/licenses/CC-BY-3.0). "SPDX" is a United States federally registered trademark of the Linux Foundation. The authors of this package license their work under the terms of the MIT License.

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node_modules/spdx-expression-parse/index.js generated vendored
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'use strict'
var scan = require('./scan')
var parse = require('./parse')
module.exports = function (source) {
return parse(scan(source))
}

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node_modules/spdx-expression-parse/package.json generated vendored
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{
"name": "spdx-expression-parse",
"description": "parse SPDX license expressions",
"version": "3.0.0",
"author": "Kyle E. Mitchell <kyle@kemitchell.com> (http://kemitchell.com)",
"files": [
"AUTHORS",
"index.js",
"parse.js",
"scan.js"
],
"dependencies": {
"spdx-exceptions": "^2.1.0",
"spdx-license-ids": "^3.0.0"
},
"devDependencies": {
"defence-cli": "^2.0.1",
"mocha": "^3.4.2",
"replace-require-self": "^1.0.0",
"standard": "^10.0.2"
},
"keywords": [
"SPDX",
"law",
"legal",
"license",
"metadata",
"package",
"package.json",
"standards"
],
"license": "MIT",
"repository": "jslicense/spdx-expression-parse.js",
"scripts": {
"lint": "standard",
"test:readme": "defence -i javascript README.md | replace-require-self | node",
"test:mocha": "mocha test/index.js",
"test": "npm run test:mocha && npm run test:readme"
}
,"_resolved": "https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-3.0.0.tgz"
,"_integrity": "sha512-Yg6D3XpRD4kkOmTpdgbUiEJFKghJH03fiC1OPll5h/0sO6neh2jqRDVHOQ4o/LMea0tgCkbMgea5ip/e+MkWyg=="
,"_from": "spdx-expression-parse@3.0.0"
}

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node_modules/spdx-expression-parse/parse.js generated vendored
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'use strict'
// The ABNF grammar in the spec is totally ambiguous.
//
// This parser follows the operator precedence defined in the
// `Order of Precedence and Parentheses` section.
module.exports = function (tokens) {
var index = 0
function hasMore () {
return index < tokens.length
}
function token () {
return hasMore() ? tokens[index] : null
}
function next () {
if (!hasMore()) {
throw new Error()
}
index++
}
function parseOperator (operator) {
var t = token()
if (t && t.type === 'OPERATOR' && operator === t.string) {
next()
return t.string
}
}
function parseWith () {
if (parseOperator('WITH')) {
var t = token()
if (t && t.type === 'EXCEPTION') {
next()
return t.string
}
throw new Error('Expected exception after `WITH`')
}
}
function parseLicenseRef () {
// TODO: Actually, everything is concatenated into one string
// for backward-compatibility but it could be better to return
// a nice structure.
var begin = index
var string = ''
var t = token()
if (t.type === 'DOCUMENTREF') {
next()
string += 'DocumentRef-' + t.string + ':'
if (!parseOperator(':')) {
throw new Error('Expected `:` after `DocumentRef-...`')
}
}
t = token()
if (t.type === 'LICENSEREF') {
next()
string += 'LicenseRef-' + t.string
return {license: string}
}
index = begin
}
function parseLicense () {
var t = token()
if (t && t.type === 'LICENSE') {
next()
var node = {license: t.string}
if (parseOperator('+')) {
node.plus = true
}
var exception = parseWith()
if (exception) {
node.exception = exception
}
return node
}
}
function parseParenthesizedExpression () {
var left = parseOperator('(')
if (!left) {
return
}
var expr = parseExpression()
if (!parseOperator(')')) {
throw new Error('Expected `)`')
}
return expr
}
function parseAtom () {
return (
parseParenthesizedExpression() ||
parseLicenseRef() ||
parseLicense()
)
}
function makeBinaryOpParser (operator, nextParser) {
return function parseBinaryOp () {
var left = nextParser()
if (!left) {
return
}
if (!parseOperator(operator)) {
return left
}
var right = parseBinaryOp()
if (!right) {
throw new Error('Expected expression')
}
return {
left: left,
conjunction: operator.toLowerCase(),
right: right
}
}
}
var parseAnd = makeBinaryOpParser('AND', parseAtom)
var parseExpression = makeBinaryOpParser('OR', parseAnd)
var node = parseExpression()
if (!node || hasMore()) {
throw new Error('Syntax error')
}
return node
}

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node_modules/spdx-expression-parse/scan.js generated vendored
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'use strict'
var licenses = []
.concat(require('spdx-license-ids'))
.concat(require('spdx-license-ids/deprecated'))
var exceptions = require('spdx-exceptions')
module.exports = function (source) {
var index = 0
function hasMore () {
return index < source.length
}
// `value` can be a regexp or a string.
// If it is recognized, the matching source string is returned and
// the index is incremented. Otherwise `undefined` is returned.
function read (value) {
if (value instanceof RegExp) {
var chars = source.slice(index)
var match = chars.match(value)
if (match) {
index += match[0].length
return match[0]
}
} else {
if (source.indexOf(value, index) === index) {
index += value.length
return value
}
}
}
function skipWhitespace () {
read(/[ ]*/)
}
function operator () {
var string
var possibilities = ['WITH', 'AND', 'OR', '(', ')', ':', '+']
for (var i = 0; i < possibilities.length; i++) {
string = read(possibilities[i])
if (string) {
break
}
}
if (string === '+' && index > 1 && source[index - 2] === ' ') {
throw new Error('Space before `+`')
}
return string && {
type: 'OPERATOR',
string: string
}
}
function idstring () {
return read(/[A-Za-z0-9-.]+/)
}
function expectIdstring () {
var string = idstring()
if (!string) {
throw new Error('Expected idstring at offset ' + index)
}
return string
}
function documentRef () {
if (read('DocumentRef-')) {
var string = expectIdstring()
return {type: 'DOCUMENTREF', string: string}
}
}
function licenseRef () {
if (read('LicenseRef-')) {
var string = expectIdstring()
return {type: 'LICENSEREF', string: string}
}
}
function identifier () {
var begin = index
var string = idstring()
if (licenses.indexOf(string) !== -1) {
return {
type: 'LICENSE',
string: string
}
} else if (exceptions.indexOf(string) !== -1) {
return {
type: 'EXCEPTION',
string: string
}
}
index = begin
}
// Tries to read the next token. Returns `undefined` if no token is
// recognized.
function parseToken () {
// Ordering matters
return (
operator() ||
documentRef() ||
licenseRef() ||
identifier()
)
}
var tokens = []
while (hasMore()) {
skipWhitespace()
if (!hasMore()) {
break
}
var token = parseToken()
if (!token) {
throw new Error('Unexpected `' + source[index] +
'` at offset ' + index)
}
tokens.push(token)
}
return tokens
}