complate

complate is a general purpose text templating CLI program that supports interactive mode, prompting the user for values via TUI behaviour and headless mode for use in automation such as CI pipelines.

Installation

The rusty way:
cargo install complate
The manual way:
Download and install from the GitHub releases.

Config example

version: 0.12
templates:
  zero:
    content:
      inline: |-
        {{ a.alpha }}
    variables:
      a.alpha:
        static: ALPHA

  one:
    content:
      file: ./.complate/templates/arbitraty-template-file.tpl
    values:
      a.pwd:
        env: "PWD"

  two:
    content:
      inline: |-
        {{ a.alpha }}
        {{ b.bravo }}
        {{ c.charlie }}
        {{ d.delta }}
        {{ e.echo }}
    variables:
      a.alpha:
        prompt: "alpha"
      b.bravo:
        shell: "printf bravo"
      c.charlie:
        static: "charlie"
      d.delta:
        select:
          text: Select the version level that shall be incremented
          options:
            alpha:
              display: alpha
              value:
                static: alpha
            bravo:
              display: bravo
              value:
                shell: printf bravo
      e.echo:
        check:
          text: Select the components that are affected
          separator: ", "
          options:
            alpha:
              display: alpha
              value:
                static: alpha
            bravo:
              display: bravo
              value:
                shell: printf bravo
      f.foxtrot:
        env: "FOXTROT"

  three:
    content:
      inline: |-
        {{ _decode "dGVzdA==" }}
    helpers:
      "_decode":
        shell: |-
          printf "$(printf $VALUE | base64 -D)"
    variables: {}

Key	Behaviour	Input
env	Retrieves value from the specified env var	None
static	Simply replaces the variable with a static value	None
prompt	Asks the user for text input (can be empty)	The prompt
shell	Invokes a shell command to resolve the variable (read from `STDOUT`)	None
select	Asks the user to select one item from a list	`text`: string (context), `options`: list (available options to select from)
check	Asks the user to select `0..n` item(s) from a list (multiselect)	`text`: string (context), `options`: list of options {display: str, value: str} (the available options to select from)

Since the shell value provider is able to run arbitrary shell commands, it is only allowed if and only if the SHELL_TRUST argument is explicitly set. See the render command reference for possible values for this setting. If not set, the provider will throw an unrecoverable error and the program will abort.

Command reference

Disclaimer

All features that are marked as experimental are not considered a public API and therefore eplicitly not covered by the backwards-compatibility policy inside a major version (see https://semver.org[semver v2]). Use these features on your own risk!