Resolve insert nested elements

types/oscal/catalog/control.go

@@ -32,7 +32,7 @@ func (c *Control) partToMarkdown(part *Part, textPrefix string) string {
 			}
 		}
 
-		result = textPrefix + label + part.Prose.Raw
+		result = textPrefix + label + part.ResolveInserts(c)
 		if result[len(result)-1] != '\n' {
 			result += "\n"
 		}
@@ -49,3 +49,12 @@ func (c *Control) partToMarkdown(part *Part, textPrefix string) string {
 
 	return result
 }
+
+func (c *Control) FindParam(id string) *Param {
+	for idx, param := range c.Parameters {
+		if param.Id == id {
+			return &c.Parameters[idx]
+		}
+	}
+	return nil
+}

types/oscal/nominal_catalog/param.go

@@ -0,0 +1,30 @@
+package nominal_catalog
+
+import (
+	"fmt"
+	"strings"
+)
+
+func (param *Param) TextRepresentation() string {
+	if param.Label != "" {
+		return fmt.Sprintf("[Assignment: %s]", param.Label)
+
+	}
+	if param.Select != nil {
+		howMany := ""
+		if len(param.Select.HowMany) != 0 {
+			howMany = fmt.Sprintf(" (%s)", param.Select.HowMany)
+		}
+
+		choicesList := make([]string, len(param.Select.Alternatives))
+		for i, v := range param.Select.Alternatives {
+			choicesList[i] = string(v)
+		}
+		choices := strings.Join(choicesList, ", ")
+
+		return fmt.Sprintf("[Selection%s: %s]", howMany, choices)
+	}
+
+	return "[TODO: Not implemented parameter]"
+
+}

types/oscal/nominal_catalog/part.go

@@ -0,0 +1,25 @@
+package nominal_catalog
+
+import (
+	"regexp"
+	"strings"
+)
+
+type ParamResolver interface {
+	FindParam(id string) *Param
+}
+
+func (p *Part) ResolveInserts(resolver ParamResolver) string {
+	re := regexp.MustCompile(`<insert param-id="([a-z0-9._-]*)"/>`)
+	resolved := p.Prose.Raw
+
+	for {
+		match := re.FindStringSubmatch(resolved)
+		if len(match) == 0 {
+			break
+		}
+		resolved = strings.ReplaceAll(resolved, match[0], resolver.FindParam(match[1]).TextRepresentation())
+	}
+
+	return resolved
+}