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third_party/sendspin-go/internal/discovery/txt.go

@@ -0,0 +1,25 @@
+// ABOUTME: Pure TXT record parsing for mDNS service entries
+// ABOUTME: Converts []string of "key=value" entries to map[string]string
+
+package discovery
+
+import "strings"
+
+// parseTXT converts an mDNS TXT record slice (each element "key=value")
+// into a map. Empty strings are ignored. Keys without '=' are stored
+// with an empty value. When a key appears multiple times, the last
+// occurrence wins.
+func parseTXT(fields []string) map[string]string {
+	out := make(map[string]string, len(fields))
+	for _, f := range fields {
+		if f == "" {
+			continue
+		}
+		if idx := strings.Index(f, "="); idx >= 0 {
+			out[f[:idx]] = f[idx+1:]
+		} else {
+			out[f] = ""
+		}
+	}
+	return out
+}