Aaron's Mod compatibility for profile viewer (#833)

1 files changed, 92 insertions, 0 deletions

diff --git a/src/main/java/de/hysky/skyblocker/utils/TextTransformer.java b/src/main/java/de/hysky/skyblocker/utils/TextTransformer.java
new file mode 100644
index 00000000..b8fb5101
--- /dev/null
+++ b/src/main/java/de/hysky/skyblocker/utils/TextTransformer.java
@@ -0,0 +1,92 @@
+package de.hysky.skyblocker.utils;
+
+import org.jetbrains.annotations.NotNull;
+
+import it.unimi.dsi.fastutil.chars.CharList;
+import net.minecraft.text.MutableText;
+import net.minecraft.text.Style;
+import net.minecraft.text.Text;
+import net.minecraft.util.Formatting;
+
+/**
+ * Contains utilities for transforming text. These methods are from Aaron's Mod.
+ * 
+ * @author AzureAaron
+ */
+public class TextTransformer {
+	private static final CharList FORMAT_CODES = CharList.of('4', 'c', '6', 'e', '2', 'a','b', '3', '1', '9', 'd', '5', 'f', '7', '8', '0', 'r', 'k', 'l', 'm', 'n', 'o');
+
+	/**
+	 * Converts strings with section symbol/legacy formatting to MutableText objects.
+	 *
+	 * @param legacy The string with legacy formatting to be transformed
+	 * @return A {@link MutableText} object matching the exact formatting of the input
+	 * 
+	 * @author AzureAaron
+	 */
+	public static MutableText fromLegacy(@NotNull String legacy) {
+		MutableText newText = Text.empty();
+		StringBuilder builder = new StringBuilder();
+		Formatting formatting = null;
+		boolean bold = false;
+		boolean italic = false;
+		boolean underline = false;
+		boolean strikethrough = false;
+		boolean obfuscated = false;
+
+		for (int i = 0; i < legacy.length(); i++) {
+			//If we've encountered a new formatting code then append the text from the previous "sequence" and reset state
+			if (i != 0 && legacy.charAt(i - 1) == '§' && FORMAT_CODES.contains(Character.toLowerCase(legacy.charAt(i))) && !builder.isEmpty()) {
+				newText.append(Text.literal(builder.toString()).setStyle(Style.EMPTY
+						.withColor(formatting)
+						.withBold(bold)
+						.withItalic(italic)
+						.withUnderline(underline)
+						.withStrikethrough(strikethrough)
+						.withObfuscated(obfuscated)));
+
+				//Erase all characters in the builder so we can reuse it, also clear formatting
+				builder.delete(0, builder.length());
+				formatting = null;
+				bold = false;
+				italic = false;
+				underline = false;
+				strikethrough = false;
+				obfuscated = false;
+			}
+
+			if (i != 0 && legacy.charAt(i - 1) == '§') {
+				Formatting fmt = Formatting.byCode(legacy.charAt(i));
+
+				switch (fmt) {
+					case BOLD -> bold = true;
+					case ITALIC -> italic = true;
+					case UNDERLINE -> underline = true;
+					case STRIKETHROUGH -> strikethrough = true;
+					case OBFUSCATED -> obfuscated = true;
+
+					default -> formatting = fmt;
+				}
+
+				continue;
+			}
+
+			//This character isn't the start of a formatting sequence or this character isn't part of a formatting sequence
+			if (legacy.charAt(i) != '§' && (i == 0 || (i != 0 && legacy.charAt(i - 1) != '§'))) {
+				builder.append(legacy.charAt(i));
+			}
+
+			// We've read the last character so append the last text with all of the formatting
+			if (i == legacy.length() - 1) {
+				newText.append(Text.literal(builder.toString()).setStyle(Style.EMPTY
+						.withColor(formatting)
+						.withBold(bold)
+						.withItalic(italic)
+						.withUnderline(underline)
+						.withStrikethrough(strikethrough)
+						.withObfuscated(obfuscated)));
+			}
+		}
+		return newText;
+	}
+}