Transfer first library files

strings.go

@@ -0,0 +1,37 @@
+package ersteller_lib
+
+import (
+	"bytes"
+	"fmt"
+	"regexp"
+	"strings"
+	"text/template"
+)
+
+func FirstLetterToUpper(name string) string {
+	return strings.ToUpper(name[:1]) + name[1:]
+}
+
+func FirstLetterToLower(name string) string {
+	return strings.ToLower(name[:1]) + name[1:]
+}
+
+func InlineTemplate(templateString string, data any) string {
+	dollarRegex := regexp.MustCompile(`\$(\w+)\$`)
+	templateString = dollarRegex.ReplaceAllStringFunc(templateString, func(s string) string {
+		if strings.HasPrefix(s, "$.") || strings.HasPrefix(s, "$end") || strings.HasPrefix(s, "$else") {
+			return s
+		}
+		return dollarRegex.ReplaceAllString(s, "$.$1$")
+	})
+	tmpl, err := template.New("inline").Delims("$", "$").Parse(templateString)
+	if err != nil {
+		return fmt.Sprint("Failed to parse template ", err)
+	}
+	var buf bytes.Buffer
+	err = tmpl.Execute(&buf, data)
+	if err != nil {
+		return fmt.Sprint("Failed to execute template ", err)
+	}
+	return buf.String()
+}