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fix(template): expose sprig date/time functions in Go templates #4644

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fix(template): expose sprig date/time functions in Go templates #4644

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8 changes: 7 additions & 1 deletion syft/format/template/encoder.go
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,13 @@ type encoder struct {
func NewFormatEncoder(cfg EncoderConfig) (sbom.FormatEncoder, error) {
// TODO: revisit this... should no template file be an error or simply render an empty result? or render the json output?
// Note: do not check for the existence of the template file here, as the default encoder cannot provide one.
f := sprig.HermeticTxtFuncMap()

// Use the full sprig function map (includes date/time functions like "now", "date", etc.)
// but exclude security-sensitive environment variable functions.
f := sprig.TxtFuncMap()
delete(f, "env")
delete(f, "expandenv")

f["getLastIndex"] = func(collection interface{}) int {
if v := reflect.ValueOf(collection); v.Kind() == reflect.Slice {
return v.Len() - 1
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