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52 lines
1.9 KiB
Markdown
52 lines
1.9 KiB
Markdown
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# Luzifer / korvike
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`korvike` is the Finnish translation to the word "replacer" and that is what it does: It takes a Go template and executes it.
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## Available functions
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Starting with `v1.0.0` Korvike is based on the [sprig functions collection](https://masterminds.github.io/sprig/) with some additions:
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- `{{ .<variable name> }}`
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Take key-value pairs from the CLI and replace them inside the template
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```console
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$ echo "{{ .foo }}" | korvike -v foo=bar
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bar
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```
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- `{{ file <file name> }}` / `{{ mustFile <file name> }}`
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Read a file and place it inside the template, `file` returns an empty string on error, `mustFile` an error
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```console
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$ echo "Hello World" > hello
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$ echo '{{ file "hello" }}' | korvike
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Hello World
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```
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- `{{ markdown <source> }}`
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Format the source using a markdown parser
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```console
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$ echo '{{ markdown "# headline" }}' | korvike
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<h1>headline</h1>
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```
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- `{{ tplexec (file "my.tpl") }}`
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Execute the given template with the same function set and variables as the parent template.
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```console
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$ export FOO=bar
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$ echo '{{ env "FOO" }}' >my.tpl
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$ echo '{{ tplexec (file "my.tpl") }}' | korvike
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bar
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```
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- `{{ urlescape <input string> }}`
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Do an URL escape to use the input string inside an query parameter in an URL
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```console
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$ echo '{{ urlescape "Hellö Wörld@Golang" }}' | korvike
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Hell%C3%B6+W%C3%B6rld%40Golang
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```
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- `{{ vault <path> <key> }}` / `{{ mustVault <path> <key> }}`
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Read a key from Vault using `VAULT_ADDR` and `VAULT_TOKEN` environment variables (or `~/.vault-token` file) for authentication. `vault` returns an empty string on error, `mustVault` an error
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```console
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$ vault write secret/test foo=bar
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$ echo '{{ vault "secret/test" "foo" }}' | korvike
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bar
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```
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