Build biweekly inline

app/src/main/java/biweekly/ICalVersion.java

@@ -0,0 +1,104 @@
+package biweekly;
+
+import com.github.mangstadt.vinnie.SyntaxStyle;
+
+/*
+ Copyright (c) 2013-2023, Michael Angstadt
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met: 
+
+ 1. Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer. 
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution. 
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * Defines all supported versions of the iCalendar standard.
+ * @author Michael Angstadt
+ */
+public enum ICalVersion {
+	/**
+	 * The original vCalendar specification.
+	 * @see <a href="http://www.imc.org/pdi/pdiproddev.html">1.0 specs</a>
+	 */
+	V1_0("1.0", SyntaxStyle.OLD),
+
+	/**
+	 * An older, deprecated version of the iCalendar specification (very similar
+	 * to {@link #V2_0}).
+	 * @see <a href="https://tools.ietf.org/html/rfc2445">RFC 2445</a>
+	 */
+	V2_0_DEPRECATED("2.0", SyntaxStyle.NEW),
+
+	/**
+	 * The latest iCalendar specification.
+	 * @see <a href="https://tools.ietf.org/html/rfc5545">RFC 5545</a>
+	 */
+	V2_0("2.0", SyntaxStyle.NEW);
+
+	private final String version;
+	private final SyntaxStyle syntaxStyle;
+
+	/**
+	 * @param version the version number
+	 */
+	ICalVersion(String version, SyntaxStyle syntaxStyle) {
+		this.version = version;
+		this.syntaxStyle = syntaxStyle;
+	}
+
+	/**
+	 * Gets the text representation of this version.
+	 * @return the text representation
+	 */
+	public String getVersion() {
+		return version;
+	}
+
+	/**
+	 * Gets the syntax style used by this version when writing to a plain-text
+	 * data stream.
+	 * @return the syntax style
+	 */
+	public SyntaxStyle getSyntaxStyle() {
+		return syntaxStyle;
+	}
+
+	/**
+	 * Gets a {@link ICalVersion} instance based on the given version number.
+	 * @param version the version number (e.g. "2.0")
+	 * @return the object or null if not found
+	 */
+	public static ICalVersion get(String version) {
+		if (V1_0.version.equals(version)) {
+			return V1_0;
+		}
+		if (V2_0.version.equals(version)) {
+			return V2_0;
+		}
+		return null;
+	}
+
+	@Override
+	public String toString() {
+		if (this == V2_0_DEPRECATED) {
+			return version + " (obsoleted)";
+		}
+		return version;
+	}
+}