base64gzip Function

base64gzip compresses a string with gzip and then encodes the result in Base64 encoding.

Packer uses the "standard" Base64 alphabet as defined in RFC 4648 section 4.

Strings in the Packer language are sequences of unicode characters rather than bytes, so this function will first encode the characters from the string as UTF-8, and then apply Base64 encoding to the result.

The Packer language applies Unicode normalization to all strings, and so passing a string through base64decode and then base64encode may not yield the original result exactly.

While we do not recommend manipulating large, raw binary data in the Packer language, this function can be used to compress reasonably sized text strings generated within the Packer language. For example, the result of this function can be used to create a compressed object in Amazon S3 as part of an S3 website.

Related Functions

• base64decode performs the opposite operation, decoding Base64 data and interpreting it as a UTF-8 string.