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https://github.com/RGBCube/nu_scripts
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c47ccd42b8
* refactor: ✨ move in one commit Eveything in modules should probably be changed to `exported` defs. The idea is to move everything first to keep proper history. * refactor: 📝 add modules readme (wip) * refactor: ✨ small move * refactor: 📝 changed nestring, updated modules readme * refactor: 📝 to document or not to document * fix: 🐛 themes replaced the template to use `main` and regenerated them from lemnos themes. * Revert "fix: 🐛 themes" This reverts commit 4918d3633c8d2d81950a0ed0cfd9eb84241bc886. * refactor: ✨ introduce sourced - Created a source `root` in which sourcable demos are stored. Some might get converted to modules later on. - Moved some files to bin too. * fix: 🐛 fehbg.nu * fix: 🐛 modules/after.nu * moved some other stuff around --------- Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>
63 lines
No EOL
2.1 KiB
Text
63 lines
No EOL
2.1 KiB
Text
let dictionary = [
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
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'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
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'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4',
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'5', '6', '7', '8', '9', '+', '/'
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]
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let padding_char = '='
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def base64_encode [input: string] {
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mut result = ""
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mut counter = 0
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mut left_carry = 0
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if ($input | is-empty) {
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error make {msg: "input is empty"}
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}
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for char in ($input | split chars) {
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let char_bin = ($char | into binary)
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let char_int = ($char_bin | into int)
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if $counter mod 3 == 0 {
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let index = ($char_int bit-shr 2)
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$result += ($dictionary | get $index)
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$left_carry = ($char_int bit-and 0x3)
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} else if $counter mod 3 == 1 {
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let index = (($left_carry bit-shl 4) bit-or ($char_int bit-shr 4))
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$result += ($dictionary | get $index)
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$left_carry = ($char_int bit-and 0xF)
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} else if $counter mod 3 == 2 {
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mut index = (($left_carry bit-shl 2) bit-or ($char_int bit-shr 6))
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$result += ($dictionary | get $index)
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$index = ($char_int bit-and 0x3F)
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$result += ($dictionary | get $index)
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}
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$counter += 1
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}
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if $counter != 0 {
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if $counter mod 3 == 1 {
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$result += ($dictionary | get ($left_carry bit-shl 4))
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$result += $padding_char
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$result += $padding_char
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} else if $counter mod 3 == 2 {
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$result += ($dictionary | get ($left_carry bit-shl 2))
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$result += $padding_char
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}
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}
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$result
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}
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# Test Cases
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# base64_encode "nushell", "bnVzaGVsbA=="
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# base64_encode "hello", "aGVsbG8="
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# base64_encode "world", "d29ybGQ="
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# base64_encode "now is the time for all good mean to come to the aid of their country", "bm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBtZWFuIHRvIGNvbWUgdG8gdGhlIGFpZCBvZiB0aGVpciBjb3VudHJ5
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# base64_encode "crab", "Y3JhYg=="
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# base64_encode "the brown fox jump over the lazy dog!"), "dGhlIGJyb3duIGZveCBqdW1wIG92ZXIgdGhlIGxhenkgZG9nIQ=="
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# base64_encode "", error
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# base64_encode "a", "YQ==" |