1 files changed, 183 insertions, 0 deletions
diff --git a/src/main/java/bjc/everge/LogStream.java b/src/main/java/bjc/everge/LogStream.java
new file mode 100644
index 0000000..5df1047
--- /dev/null
+++ b/src/main/java/bjc/everge/LogStream.java
@@ -0,0 +1,183 @@
+package bjc.everge;
+
+import java.io.*;
+import java.util.*;
+
+/**
+ * Simple class used for logging with various levels.
+ *
+ * @author Ben Culkin
+ */
+public class LogStream {
+	/**
+	 * Log level for printing nothing.
+	 */
+	public static final int NOTHING = -1;
+
+	/**
+	 * Log level for printing only fatal errors.
+	 */
+	public static final int FATAL = 0;
+
+	/**
+	 * Log level for printing all errors.
+	 */
+	public static final int ERROR = 1;
+
+	/**
+	 * Log level for printing warnings.
+	 */
+	public static final int WARN = 2;
+
+	/**
+	 * Log level for printing info messages.
+	 */
+	public static final int INFO = 3;
+
+	/**
+	 * Log level for printing debug messages.
+	 */
+	public static final int DEBUG = 4;
+
+	/**
+	 * Log level for printing trace messages.
+	 */
+	public static final int TRACE = 5;
+
+	private int verbosity;
+
+	private PrintStream output;
+
+	/**
+	 * Create a new log stream.
+	 *
+	 * Defaults to printing only fatal errors.
+	 *
+	 * @param out
+	 * 	The output stream to place things into.
+	 */
+	public LogStream(PrintStream out) {
+		output = out;
+		verbosity = FATAL;
+	}
+
+	/**
+	 * Create a new log stream.
+	 *
+	 * @param out
+	 * 	The output stream to place things into.
+	 * @param level
+	 * 	The verbosity level. Use the constants in this class for the values.
+	 */
+	public LogStream(PrintStream out, int level) {
+		output = out;
+		verbosity = level;
+	}
+
+	public int verbosity() {
+		return verbosity;
+	}
+
+	public void verbosity(int verb) {
+		verbosity = verb;
+	}
+
+	public void louder() {
+		louder(1);
+	}
+
+	public void louder(int amt) {
+		verbosity += amt;
+	}
+
+	public void quieter() {
+		quieter(1);
+	}
+
+	public void quieter(int amt) {
+		verbosity -= amt;
+	}
+
+	/**
+	 * Print a message that will always be visible.
+	 *
+	 * @param msg
+	 * 	The message to print.
+	 */
+	public void print(String msg) {
+		output.print(msg);
+	}
+
+	/**
+	 * Print a formatted message that will always be visible.
+	 *
+	 * @param msg
+	 * 	The format string for the message to print.
+	 *
+	 * @param args
+	 * 	The arguments to the format string.
+	 */
+	public void printf(String msg, Object... args) {
+		output.printf(msg, args);
+	}
+
+	public void message(int lvl, String msg) {
+		if (verbosity >= lvl) {
+			output.print(msg);
+		}
+	}
+
+	public void messagef(int lvl, String msg, Object... args) {
+		if (verbosity >= lvl) {
+			output.printf(msg, args);
+		}
+	}
+
+	public void fatal(String msg) {
+		message(FATAL, msg);
+	}
+
+	public void fatalf(String msg, Object... args) {
+		messagef(FATAL, msg, args);
+	}
+
+	public void error(String msg) {
+		message(ERROR, msg);
+	}
+
+	public void errorf(String msg, Object... args) {
+		messagef(ERROR, msg, args);
+	}
+
+	public void warn(String msg) {
+		message(WARN, msg);
+	}
+
+	public void warnf(String msg, Object... args) {
+		messagef(WARN, msg, args);
+	}
+
+	public void info(String msg) {
+		message(INFO, msg);
+	}
+
+	public void infof(String msg, Object... args) {
+		messagef(INFO, msg, args);
+	}
+
+	public void debug(String msg) {
+		message(DEBUG, msg);
+	}
+
+	public void debugf(String msg, Object...args) {
+		messagef(DEBUG, msg, args);
+	}
+
+	public void trace(String msg) {
+		message(TRACE, msg);
+	}
+
+	public void tracef(String msg, Object... args) {
+		messagef(TRACE, msg, args);
+	}
+}