Implemented general purpose table utility

src/main/java/me/clip/placeholderapi/util/Format.java

@@ -0,0 +1,58 @@
+package me.clip.placeholderapi.util;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+import java.util.Optional;
+
+import static java.lang.Math.max;
+import static java.lang.Math.min;
+import static java.util.Arrays.stream;
+import static java.util.stream.Collectors.joining;
+import static java.util.stream.Collectors.toList;
+import static java.util.stream.IntStream.range;
+
+/**
+ * For the record, I am not sorry.
+ */
+public final class Format
+{
+
+	private Format()
+	{}
+
+
+	public enum Align
+	{
+		LEFT, RIGHT
+	}
+
+
+	@NotNull
+	public static Optional<List<String>> tablify(@NotNull final Align align, @NotNull final List<List<String>> rows)
+	{
+		return findSpacing(rows)
+				.map(spacing -> buildFormat(align, spacing))
+				.map(format -> rows.stream()
+								   .map(row -> String.format(format, row.toArray()).substring(align == Align.RIGHT ? 2 : 0))
+								   .collect(toList()));
+	}
+
+
+	@NotNull
+	private static String buildFormat(@NotNull final Align align, @NotNull final int[] spacing)
+	{
+		return stream(spacing)
+				.mapToObj(space -> "%" + (align == Align.LEFT ? "-" : "") + (space + 2) + "s")
+				.collect(joining());
+	}
+
+	@NotNull
+	private static Optional<int[]> findSpacing(@NotNull final List<List<String>> rows)
+	{
+		return rows.stream()
+				   .map(row -> row.stream().mapToInt(String::length).toArray())
+				   .reduce((l, r) -> range(0, min(l.length, r.length)).map(i -> max(l[i], r[i])).toArray());
+	}
+
+}