Added option for page numbers and fixed lang file twice

master/src/main/java/net/earthcomputer/clientcommands/command/CommandBook.java

@@ -0,0 +1,88 @@
+package net.earthcomputer.clientcommands.command;
+
+import io.netty.buffer.Unpooled;
+import net.minecraft.client.entity.EntityPlayerSP;
+import net.minecraft.client.resources.I18n;
+import net.minecraft.command.CommandException;
+import net.minecraft.command.ICommandSender;
+import net.minecraft.command.WrongUsageException;
+import net.minecraft.init.Items;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagList;
+import net.minecraft.nbt.NBTTagString;
+import net.minecraft.network.PacketBuffer;
+import net.minecraft.network.play.client.CPacketCustomPayload;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.TextComponentString;
+import net.minecraft.util.text.TextComponentTranslation;
+import net.minecraft.util.text.TextFormatting;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Random;
+import java.util.function.IntSupplier;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class CommandBook extends ClientCommandBase {
+    @Override
+    public String getName() {
+        return "cbook";
+    }
+
+    @Override
+    public String getUsage(ICommandSender sender) {
+        return "commands.cbook.usage";
+    }
+
+    public void execute(MinecraftServer server, ICommandSender sender, String[] args) throws CommandException {
+        if (args.length == 0)
+            throw new WrongUsageException(getUsage(sender));
+
+        if (!(sender instanceof EntityPlayerSP))
+            throw new CommandException("commands.cbook.noPlayer");
+
+        int limit = args.length > 1 ? parseInt(args[1], 1, 50) : 50;
+
+        EntityPlayerSP player = (EntityPlayerSP) sender;
+        ItemStack heldItem = player.getHeldItemMainhand();
+        if (heldItem.getItem() != Items.WRITABLE_BOOK) {
+            throw new CommandException("commands.cbook.noBook");
+        }
+
+        IntStream characterGenerator;
+
+        switch (args[0]) {
+            case "fill":
+                characterGenerator = IntStream.generate(() -> 0x10ffff);
+                break;
+            case "random":
+                characterGenerator = new Random().ints(0x80, 0x10ffff - 0x800).map(i -> i < 0xd800 ? i : i + 0x800);
+                break;
+            default:
+                throw new CommandException(getUsage(sender));
+        }
+
+        String joinedPages = characterGenerator.limit(50 * 210).mapToObj(i -> String.valueOf((char) i)).collect(Collectors.joining());
+
+        NBTTagList pages = new NBTTagList();
+
+        for (int page = 0; page < limit; page++) {
+            pages.appendTag(new NBTTagString(joinedPages.substring(page * 210, (page + 1) * 210)));
+        }
+
+        if (heldItem.hasTagCompound()) {
+            heldItem.getTagCompound().setTag("pages", pages);
+        } else {
+            heldItem.setTagInfo("pages", pages);
+        }
+        PacketBuffer buf = new PacketBuffer(Unpooled.buffer());
+        buf.writeItemStack(heldItem);
+        player.connection.sendPacket(new CPacketCustomPayload("MC|BEdit", buf));
+
+        sender.sendMessage(new TextComponentTranslation("commands.cbook.success"));
+    }
+}

src/main/resources/assets/clientcommands/lang/en_us.lang

@@ -63,7 +63,7 @@ commands.cabort.usage=/cabort
 commands.cbook.success=Successfully edited book
 commands.cbook.noBook=You are not holding a book
 commands.cbook.noPlayer=You are not a player
-commands.cbook.usage=/cbook <fill|random>
+commands.cbook.usage=/cbook <fill|random> <pages>
 
 commands.ccalc.mathError=Math error: %s
 commands.ccalc.syntaxError=Syntax error