94 lines
4.1 KiB
Diff
94 lines
4.1 KiB
Diff
From 7d88f5608cfd251ea0135286fadbce3017465eb2 Mon Sep 17 00:00:00 2001
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From: Zach Brown <zach@zachbr.io>
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Date: Tue, 23 Oct 2018 20:53:43 -0400
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Subject: [PATCH] Strip private area unicode characters from signs
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It is not immediately clear how these characters ended up on signs in
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previous versions. It is clear, however, that they now render as empty
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unicode boxes in 1.13, whereas previously they rendered as invisible
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characters.
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When these signs are loaded in versions after this commit, these
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characters from the private use area of the Unicode block will be
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stripped. The sign will then be marked to ensure this conversion only
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runs once.
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There is a flag -DPaper.keepInvalidUnicode=true that can be used if you
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do not want us to strip these characters from your signs, though I can
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think of no reason to use it.
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Fixes GH-1571
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diff --git a/src/main/java/net/minecraft/server/TileEntitySign.java b/src/main/java/net/minecraft/server/TileEntitySign.java
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index 626ba9b17..7b5d534f4 100644
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--- a/src/main/java/net/minecraft/server/TileEntitySign.java
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+++ b/src/main/java/net/minecraft/server/TileEntitySign.java
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@@ -14,6 +14,11 @@ public class TileEntitySign extends TileEntity implements ICommandListener { //
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private final String[] k = new String[4];
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private EnumColor color;
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+ // Paper start - Strip invalid unicode from signs on load
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+ private static final boolean keepInvalidUnicode = Boolean.getBoolean("Paper.keepInvalidUnicode"); // Allow people to keep their bad unicode if they really want it
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+ private boolean privateUnicodeRemoved = false;
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+ // Paper end
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+
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public TileEntitySign() {
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super(TileEntityTypes.SIGN);
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this.color = EnumColor.BLACK;
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@@ -36,6 +41,12 @@ public class TileEntitySign extends TileEntity implements ICommandListener { //
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// CraftBukkit end
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nbttagcompound.setString("Color", this.color.b());
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+ // Paper start - Only remove private area unicode once // TODO - this doesn't need to run for every sign, check data ver
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+ if (this.privateUnicodeRemoved) {
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+ nbttagcompound.setBoolean("Paper.RemovedPrivateUnicode", true);
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+ }
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+ // Paper end
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+
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return nbttagcompound;
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}
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@@ -45,6 +56,11 @@ public class TileEntitySign extends TileEntity implements ICommandListener { //
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super.load(nbttagcompound);
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this.color = EnumColor.a(nbttagcompound.getString("Color"), EnumColor.BLACK);
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+ // Paper start - Keep track, only do it once per sign
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+ this.privateUnicodeRemoved = nbttagcompound.getBoolean("Paper.RemovedPrivateUnicode");
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+ boolean ranUnicodeRemoval = false;
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+ // Paper end
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+
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// CraftBukkit start - Add an option to convert signs correctly
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// This is done with a flag instead of all the time because
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// we have no way to tell whether a sign is from 1.7.10 or 1.8
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@@ -57,6 +73,19 @@ public class TileEntitySign extends TileEntity implements ICommandListener { //
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s = "\"\"";
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}
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+ // Paper start - Strip private use area unicode from signs
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+ if (s != null && !keepInvalidUnicode && !this.privateUnicodeRemoved) {
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+ StringBuilder builder = new StringBuilder();
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+ for (char character : s.toCharArray()) {
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+ if (Character.UnicodeBlock.of(character) != Character.UnicodeBlock.PRIVATE_USE_AREA) {
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+ builder.append(character);
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+ }
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+ }
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+ s = builder.toString();
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+ ranUnicodeRemoval = true;
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+ }
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+ // Paper end
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+
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try {
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//IChatBaseComponent ichatbasecomponent = IChatBaseComponent.ChatSerializer.a(s.isEmpty() ? "\"\"" : s); // Paper - move down - the old format might throw a json error
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@@ -83,6 +112,7 @@ public class TileEntitySign extends TileEntity implements ICommandListener { //
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this.k[i] = null;
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}
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+ if (ranUnicodeRemoval) this.privateUnicodeRemoved = true; // Paper - Flag to write NBT
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}
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public void a(int i, IChatBaseComponent ichatbasecomponent) {
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--
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2.21.0
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