hiddewie / template Goto Github PK

See https://docs.rs/hcl-rs/latest/hcl/

To enable more or less log output.

See https://crates.io/crates/log, and implementations (json formatted, log levels from environment or stderr output). No raw writing to stderr.

A variable must have a scope so it cannot remain defined outside the block.

{% with a = 1 %}
{% a %}
{% end %}

• index0
• index1
• even
• odd
• first
• last
• size
• alternate([a, b, c])

• numeric literals (also exp forms)
• null
• strings
• booleans
• lists
• dictionaries

Check out if https://github.com/cross-rs/cross can simplify cross-compilation

• crate
• apt
• brew

See https://github.com/hashicorp/consul-template/blob/main/docs/templating-language.md#scratch

Basically a map with setter and getter functions to help storing intermediate data while rendering a template.

Behind optional commandline flag to allow capabilities

• List files in directory
• Read file contents

Error for asserting requirements
Logging function for outputting things to the standard error, but without template output.

OS: darwin, linux, freebsd, netbsd, solaris, windows.
Arch: amd64, arm64, 386

See Platform Support - The rustc book

general

• default
• null - coalesce
• to / from JSON
• to pretty JSON
• type of value

Strings

• length
• substring (take, drop, shrink, pad)
• capitalize (first character and all characters)
• PascalCase
• camelCase
• snake_case
• kebab-case
• environment
• split
• reverse
• match regex
• replace
• regexReplace
• contains
• startsWith / endsWith
• trim
• abbreviate
• empty
• escape (HTML, JSON, JS, CSS, SQL, URL/query)
• indent
• to array of bytes

Boolean

• negate

Numbers

• -
• format to base, parse from base
• arithmetic
• constants
• exp, log
• formatting, also locale (config), percentage
• sum / avg (only number arrays)
• min / max
• binary operations (and, or, xor, nand, nor, invert, shifts)
• (ints) until to make array range

Crypto, encoding

• hashing
• encryption
• base64, base48, base32
• hex encoding

Array

• sort for some key
• reverse
• join
• length
• first
• last
• take / drop
• contains
• empty
• unique
• containsAll, containsAny, containsNone
• chunked
• first / last, and other array methods
• lines (split by \n, \r\n or \r)
• zip
• any / all / none / some

Object

• keys
• values
• invert
• length
• containsKey
• containsValue
• empty
• loop over key/value pairs

Formats

• to/from JSON

Date/time/timezone

• timezone
• current time
• current date
• current unix epoch / timestamp
• date/time formatting
• duration strings & conversion

Random

• UUID
• integer in range
• string with chars

URL support

• parse / format / extract parts of URLs

See https://crates.io/crates/yaml-rust

Also check the results from Jinja whitespace gobbling. They do clever things with keeping newlines. Useful for templating YAML. See https://jinja.palletsprojects.com/en/3.0.x/api/, trim_blocks and lstrip_blocks, and https://ttl255.com/jinja2-tutorial-part-3-whitespace-control/.