1 files changed, 92 insertions, 0 deletions
diff --git a/src/org/xbill/DNS/Section.java b/src/org/xbill/DNS/Section.java
new file mode 100644
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+++ b/src/org/xbill/DNS/Section.java
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+// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org)
+
+package org.xbill.DNS;
+
+/**
+ * Constants and functions relating to DNS message sections
+ *
+ * @author Brian Wellington
+ */
+
+public final class Section {
+
+/** The question (first) section */
+public static final int QUESTION	= 0;
+
+/** The answer (second) section */
+public static final int ANSWER		= 1;
+
+/** The authority (third) section */
+public static final int AUTHORITY	= 2;
+
+/** The additional (fourth) section */
+public static final int ADDITIONAL	= 3;
+
+/* Aliases for dynamic update */
+/** The zone (first) section of a dynamic update message */
+public static final int ZONE		= 0;
+
+/** The prerequisite (second) section of a dynamic update message */
+public static final int PREREQ		= 1;
+
+/** The update (third) section of a dynamic update message */
+public static final int UPDATE		= 2;
+
+private static Mnemonic sections = new Mnemonic("Message Section",
+						Mnemonic.CASE_LOWER);
+private static String [] longSections = new String[4];
+private static String [] updateSections = new String[4];
+
+static {
+	sections.setMaximum(3);
+	sections.setNumericAllowed(true);
+
+	sections.add(QUESTION, "qd");
+	sections.add(ANSWER, "an");
+	sections.add(AUTHORITY, "au");
+	sections.add(ADDITIONAL, "ad");
+
+	longSections[QUESTION]		= "QUESTIONS";
+	longSections[ANSWER]		= "ANSWERS";
+	longSections[AUTHORITY]		= "AUTHORITY RECORDS";
+	longSections[ADDITIONAL]	= "ADDITIONAL RECORDS";
+
+	updateSections[ZONE]		= "ZONE";
+	updateSections[PREREQ]		= "PREREQUISITES";
+	updateSections[UPDATE]		= "UPDATE RECORDS";
+	updateSections[ADDITIONAL]	= "ADDITIONAL RECORDS";
+}
+
+private
+Section() {}
+
+/** Converts a numeric Section into an abbreviation String */
+public static String
+string(int i) {
+	return sections.getText(i);
+}
+
+/** Converts a numeric Section into a full description String */
+public static String
+longString(int i) {
+	sections.check(i);
+	return longSections[i];
+}
+
+/**
+ * Converts a numeric Section into a full description String for an update
+ * Message.
+ */
+public static String
+updString(int i) {
+	sections.check(i);
+	return updateSections[i];
+}
+
+/** Converts a String representation of a Section into its numeric value */
+public static int
+value(String s) {
+	return sections.getValue(s);
+}
+
+}