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feat(templates): add prefix and suffix string template functions #596

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1b7f38a
feat(templates): add prefix and suffix string template functions
rubenhoenle May 4, 2026
fc7be84
add to readme
rubenhoenle May 15, 2026
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4 changes: 3 additions & 1 deletion README.md
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Expand Up @@ -408,6 +408,8 @@ using the following data fields and functions:
| Function | Example | Description |
|-----------------|--------------------------------------------------|---------------------------------------------------------------------------------------------------|
| `codefile` | `{{codefile "shell" "path/to/file.sh"}}` | Create a Markdown code block with the content of a file. Path is relative to the repository root. |
| `hasPrefix` | `{{if hasPrefix "FOO BAR" "FOO"}}` | Equivalent to [`strings.HasPrefix`](https://pkg.go.dev/strings#HasPrefix). |
| `hasSuffix` | `{{if hasSuffix "FOO BAR" "BAR"}}` | Equivalent to [`strings.HasSuffix`](https://pkg.go.dev/strings#HasSuffix). |
| `lower` | `{{"EXAMPLE STRING" \| lower}}` | Equivalent to [`strings.ToLower`](https://pkg.go.dev/strings#ToLower). |
| `plainmarkdown` | `{{"*example markdown*" \| plainmarkdown }}` | Render Markdown content as plaintext. |
| `prefixlines` | `{{"example string" \| prefixlines "prefix: "}}` | Add a prefix to all (newline-separated) lines in a string. |
Expand Down Expand Up @@ -489,4 +491,4 @@ cmp stdout expected-output.txt # compares stdout from binary with the golden fi
cmp docs/index.md expected-index.md # compares the generated docs with the golden file in the text archive below
cmp docs/data-sources/example.md expected-datasource.md # compares the generated docs with the golden file in the text archive below
cmp docs/resources/example.md expected-resource.md # compares the generated docs with the golden file in the text archive below
```
```
2 changes: 2 additions & 0 deletions internal/provider/template.go
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Expand Up @@ -112,6 +112,8 @@ func newTemplate(providerDir, name, text string) (*template.Template, error) {

tmpl.Funcs(map[string]interface{}{
"codefile": codeFile(providerDir),
"hasPrefix": strings.HasPrefix,
"hasSuffix": strings.HasSuffix,
"lower": strings.ToLower,
"plainmarkdown": mdplain.PlainMarkdown,
"prefixlines": tmplfuncs.PrefixLines,
Expand Down