chore(base64): add openssl commands, use different input methods

snippets/base64.sh

@@ -1,11 +1,35 @@
 #!/usr/bin/env sh
 
+# Encrypt
+# Avoid including the last new line character
 printf 'something plain' | base64
 echo -n 'something plain' | base64
+# Include the last new line character
+echo 'something plain *with* final newline' | base64
+base64 <<< 'something plain'
+openssl enc -base64 <<< 'something plain'
+perl -MMIME::Base64 -ne 'printf "%s\n",encode_base64($_)' <<< 'something plain'
+python -m base64 <<< 'something plain'
+
+# Decrypt
 echo 'c29tZXRoaW5nIHBsYWlu' | base64 -d
+base64 -d <<< 'c29tZXRoaW5nIHBsYWluCg=='
+echo 'c29tZXRoaW5nIHBsYWluICp3aXRoKiBmaW5hbCBuZXdsaW5lCg==' | base64 -di
+openssl enc -base64 -d <<< 'c29tZXRoaW5nIHBsYWluICp3aXRoKiBmaW5hbCBuZXdsaW5lCg=='
+perl -MMIME::Base64 -ne 'printf "%s\n",decode_base64($_)' <<< 'c29tZXRoaW5nIHBsYWluCg=='
+python -m base64 -d <<< 'c29tZXRoaW5nIHBsYWluCg=='
 
-echo 'something plain with final newline' | base64
-echo 'c29tZXRoaW5nIHBsYWluIHdpdGggZmluYWwgbmV3bGluZQo=' | base64 -d
 
+# Compress and encrypt
 printf 'something plain' | gzip | base64
-echo H4sIAPQWZmYAAyvOz00tycjMS1coyEnMzAMA2StAzA8AAAA= | base64 -d | gzip
+
+# Decrypt compressed strings
+echo H4sIAPQWZmYAAyvOz00tycjMS1coyEnMzAMA2StAzA8AAAA= | base64 -d | gunzip
+
+
+# Strings spanning multiple lines
+openssl enc -base64 <<< 'Should the data be a tad longer, the base64 encoded result will span multiple lines.'
+openssl enc -base64 -dA << EOF
+U2hvdWxkIHRoZSBkYXRhIGJlIGEgdGFkIGxvbmdlciwgdGhlIGJhc2U2NCBlbmNv
+ZGVkIHJlc3VsdCB3aWxsIHNwYW4gbXVsdGlwbGUgbGluZXMuCg==
+EOF