Tons of Solutions Engineering work done today for the rest of the CS team! Headway, Howard Hanna, Engels, Brighton, etc. Also completed Datasnippers auth flow and worked on Anthology's script. Cloned Anthology's courses (900..) and will clone Full Story on Monday.
This commit is contained in:
150
Scripts/node_modules/base64-js/index.js
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150
Scripts/node_modules/base64-js/index.js
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'use strict'
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exports.byteLength = byteLength
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exports.toByteArray = toByteArray
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exports.fromByteArray = fromByteArray
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var lookup = []
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var revLookup = []
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var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
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var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
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for (var i = 0, len = code.length; i < len; ++i) {
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lookup[i] = code[i]
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revLookup[code.charCodeAt(i)] = i
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}
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// Support decoding URL-safe base64 strings, as Node.js does.
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// See: https://en.wikipedia.org/wiki/Base64#URL_applications
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revLookup['-'.charCodeAt(0)] = 62
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revLookup['_'.charCodeAt(0)] = 63
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function getLens (b64) {
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var len = b64.length
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if (len % 4 > 0) {
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throw new Error('Invalid string. Length must be a multiple of 4')
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}
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// Trim off extra bytes after placeholder bytes are found
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// See: https://github.com/beatgammit/base64-js/issues/42
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var validLen = b64.indexOf('=')
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if (validLen === -1) validLen = len
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var placeHoldersLen = validLen === len
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? 0
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: 4 - (validLen % 4)
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return [validLen, placeHoldersLen]
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}
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// base64 is 4/3 + up to two characters of the original data
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function byteLength (b64) {
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var lens = getLens(b64)
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var validLen = lens[0]
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var placeHoldersLen = lens[1]
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return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
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}
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function _byteLength (b64, validLen, placeHoldersLen) {
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return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
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}
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function toByteArray (b64) {
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var tmp
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var lens = getLens(b64)
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var validLen = lens[0]
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var placeHoldersLen = lens[1]
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var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
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var curByte = 0
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// if there are placeholders, only get up to the last complete 4 chars
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var len = placeHoldersLen > 0
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? validLen - 4
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: validLen
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var i
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for (i = 0; i < len; i += 4) {
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tmp =
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(revLookup[b64.charCodeAt(i)] << 18) |
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(revLookup[b64.charCodeAt(i + 1)] << 12) |
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(revLookup[b64.charCodeAt(i + 2)] << 6) |
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revLookup[b64.charCodeAt(i + 3)]
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arr[curByte++] = (tmp >> 16) & 0xFF
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arr[curByte++] = (tmp >> 8) & 0xFF
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arr[curByte++] = tmp & 0xFF
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}
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if (placeHoldersLen === 2) {
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tmp =
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(revLookup[b64.charCodeAt(i)] << 2) |
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(revLookup[b64.charCodeAt(i + 1)] >> 4)
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arr[curByte++] = tmp & 0xFF
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}
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if (placeHoldersLen === 1) {
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tmp =
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(revLookup[b64.charCodeAt(i)] << 10) |
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(revLookup[b64.charCodeAt(i + 1)] << 4) |
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(revLookup[b64.charCodeAt(i + 2)] >> 2)
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arr[curByte++] = (tmp >> 8) & 0xFF
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arr[curByte++] = tmp & 0xFF
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}
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return arr
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}
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function tripletToBase64 (num) {
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return lookup[num >> 18 & 0x3F] +
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lookup[num >> 12 & 0x3F] +
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lookup[num >> 6 & 0x3F] +
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lookup[num & 0x3F]
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}
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function encodeChunk (uint8, start, end) {
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var tmp
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var output = []
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for (var i = start; i < end; i += 3) {
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tmp =
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((uint8[i] << 16) & 0xFF0000) +
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((uint8[i + 1] << 8) & 0xFF00) +
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(uint8[i + 2] & 0xFF)
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output.push(tripletToBase64(tmp))
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}
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return output.join('')
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}
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function fromByteArray (uint8) {
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var tmp
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var len = uint8.length
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var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
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var parts = []
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var maxChunkLength = 16383 // must be multiple of 3
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// go through the array every three bytes, we'll deal with trailing stuff later
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for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
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parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
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}
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// pad the end with zeros, but make sure to not forget the extra bytes
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if (extraBytes === 1) {
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tmp = uint8[len - 1]
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parts.push(
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lookup[tmp >> 2] +
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lookup[(tmp << 4) & 0x3F] +
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'=='
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)
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} else if (extraBytes === 2) {
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tmp = (uint8[len - 2] << 8) + uint8[len - 1]
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parts.push(
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lookup[tmp >> 10] +
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lookup[(tmp >> 4) & 0x3F] +
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lookup[(tmp << 2) & 0x3F] +
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'='
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)
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}
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return parts.join('')
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}
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