New

internal/pkg/stringutil/string.go

@@ -0,0 +1,57 @@
+// Filename: internal/pkg/stringutil/string.go
+package stringutil
+
+import (
+	"fmt"
+	"strings"
+)
+
+// MaskAPIKey masks an API key for safe logging.
+func MaskAPIKey(key string) string {
+	length := len(key)
+	if length <= 8 {
+		return key
+	}
+	return fmt.Sprintf("%s****%s", key[:4], key[length-4:])
+}
+
+// TruncateString shortens a string to a maximum length.
+func TruncateString(s string, maxLength int) string {
+	if len(s) > maxLength {
+		return s[:maxLength]
+	}
+	return s
+}
+
+// SplitAndTrim splits a string by a separator
+func SplitAndTrim(s string, sep string) []string {
+	if s == "" {
+		return []string{}
+	}
+
+	parts := strings.Split(s, sep)
+	result := make([]string, 0, len(parts))
+
+	for _, part := range parts {
+		trimmed := strings.TrimSpace(part)
+		if trimmed != "" {
+			result = append(result, trimmed)
+		}
+	}
+
+	return result
+}
+
+// StringToSet converts a separator-delimited string into a set
+func StringToSet(s string, sep string) map[string]struct{} {
+	parts := SplitAndTrim(s, sep)
+	if len(parts) == 0 {
+		return nil
+	}
+
+	set := make(map[string]struct{}, len(parts))
+	for _, part := range parts {
+		set[part] = struct{}{}
+	}
+	return set
+}