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Move range parser out of CommandPacket. Make a common command base.

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This commit is contained in:
Kristian S. Stangeland 2012-11-03 08:51:03 +01:00
parent 188f03b39e
commit 626dea07fa
4 changed files with 284 additions and 216 deletions
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51
ProtocolLib/src/main/java/com/comphenix/protocol/CommandBase.java Normal file
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@ -0,0 +1,51 @@
package com.comphenix.protocol;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
/**
* Base class for all our commands.
*
* @author Kristian
*/
abstract class CommandBase implements CommandExecutor {
public static final String PERMISSION_ADMIN = "protocol.admin";
private String permission;
private String name;
private int minimumArgumentCount;
public CommandBase(String permission, String name) {
this(permission, name, 0);
}
public CommandBase(String permission, String name, int minimumArgumentCount) {
this.name = name;
this.permission = permission;
this.minimumArgumentCount = minimumArgumentCount;
}
@Override
public final boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
// Make sure we're dealing with the correct command
if (!command.getName().equalsIgnoreCase(name)) {
return false;
}
if (!sender.hasPermission(permission)) {
sender.sendMessage(ChatColor.RED + "You haven't got permission to run this command.");
return true;
}
// Check argument length
if (args != null && args.length >= minimumArgumentCount) {
return handleCommand(sender, args);
} else {
return false;
}
}
protected abstract boolean handleCommand(CommandSender sender, String[] args);
}

269
ProtocolLib/src/main/java/com/comphenix/protocol/CommandPacket.java
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@ -12,8 +12,6 @@ import net.minecraft.server.Packet;
import net.sf.cglib.proxy.Factory;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.plugin.Plugin;
@ -38,7 +36,8 @@ import com.google.common.collect.Ranges;
*
* @author Kristian
*/
class CommandPacket implements CommandExecutor {
class CommandPacket extends CommandBase {
private interface DetailedPacketListener extends PacketListener {
/**
* Determine whether or not the given packet listener is detailed or not.
@ -73,6 +72,7 @@ class CommandPacket implements CommandExecutor {
private AbstractIntervalTree<Integer, DetailedPacketListener> serverListeners = createTree(ConnectionSide.SERVER_SIDE);
public CommandPacket(Plugin plugin, Logger logger, ErrorReporter reporter, ProtocolManager manager) {
super(CommandBase.PERMISSION_ADMIN, NAME, 1);
this.plugin = plugin;
this.logger = logger;
this.reporter = reporter;
@ -163,86 +163,87 @@ class CommandPacket implements CommandExecutor {
Usage: /<command> add|remove client|server|both [ID start] [ID stop] [detailed]
*/
@Override
public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
// Make sure we're dealing with the correct command
if (!command.getName().equalsIgnoreCase(NAME))
return false;
// We need at least one argument
if (args != null && args.length > 0) {
try {
SubCommand subCommand = parseCommand(args, 0);
ConnectionSide side = parseSide(args, 1, ConnectionSide.BOTH);
Integer lastIndex = args.length - 1;
Boolean detailed = parseBoolean(args, lastIndex);
protected boolean handleCommand(CommandSender sender, String[] args) {
try {
SubCommand subCommand = parseCommand(args, 0);
ConnectionSide side = parseSide(args, 1, ConnectionSide.BOTH);
Integer lastIndex = args.length - 1;
Boolean detailed = parseBoolean(args, lastIndex);
// See if the last element is a boolean
if (detailed == null) {
detailed = false;
} else {
lastIndex--;
}
// Make sure the packet IDs are valid
List<Range<Integer>> ranges = getRanges(args, 2, lastIndex, Ranges.closed(0, 255));
if (ranges.isEmpty()) {
// Use every packet ID
ranges.add(Ranges.closed(0, 255));
}
// Perform command
if (subCommand == SubCommand.ADD) {
for (Range<Integer> range : ranges) {
DetailedPacketListener listener = addPacketListeners(side, range.lowerEndpoint(), range.upperEndpoint(), detailed);
sendMessageSilently(sender, ChatColor.BLUE + "Added listener " + getWhitelistInfo(listener));
}
} else if (subCommand == SubCommand.REMOVE) {
int count = 0;
// Remove each packet listener
for (Range<Integer> range : ranges) {
count += removePacketListeners(side, range.lowerEndpoint(), range.upperEndpoint(), detailed).size();
}
sendMessageSilently(sender, ChatColor.BLUE + "Fully removed " + count + " listeners.");
} else if (subCommand == SubCommand.NAMES) {
Set<Integer> named = getNamedPackets(side);
List<String> messages = new ArrayList<String>();
// Print the equivalent name of every given ID
for (Range<Integer> range : ranges) {
for (int id : range.asSet(DiscreteDomains.integers())) {
if (named.contains(id)) {
messages.add(ChatColor.BLUE + "" + id + ": " + Packets.getDeclaredName(id));
}
}
}
// Convert to two rows
messages = getMessagesInRows(messages, 2, CHAT_WIDTH);
// Print that
for (String message : messages) {
sendMessageSilently(sender, message);
}
}
} catch (NumberFormatException e) {
sendMessageSilently(sender, ChatColor.RED + "Cannot parse number: " + e.getMessage());
} catch (IllegalArgumentException e) {
sendMessageSilently(sender, ChatColor.RED + e.getMessage());
// See if the last element is a boolean
if (detailed == null) {
detailed = false;
} else {
lastIndex--;
}
return true;
// Make sure the packet IDs are valid
List<Range<Integer>> ranges = RangeParser.getRanges(args, 2, lastIndex, Ranges.closed(0, 255));
if (ranges.isEmpty()) {
// Use every packet ID
ranges.add(Ranges.closed(0, 255));
}
// Perform commands
if (subCommand == SubCommand.ADD) {
executeAddCommand(sender, side, detailed, ranges);
} else if (subCommand == SubCommand.REMOVE) {
executeRemoveCommand(sender, side, detailed, ranges);
} else if (subCommand == SubCommand.NAMES) {
executeNamesCommand(sender, side, ranges);
}
} catch (NumberFormatException e) {
sendMessageSilently(sender, ChatColor.RED + "Cannot parse number: " + e.getMessage());
} catch (IllegalArgumentException e) {
sendMessageSilently(sender, ChatColor.RED + e.getMessage());
}
return false;
return true;
}
private void executeAddCommand(CommandSender sender, ConnectionSide side, Boolean detailed, List<Range<Integer>> ranges) {
for (Range<Integer> range : ranges) {
DetailedPacketListener listener = addPacketListeners(side, range.lowerEndpoint(), range.upperEndpoint(), detailed);
sendMessageSilently(sender, ChatColor.BLUE + "Added listener " + getWhitelistInfo(listener));
}
}
private void executeRemoveCommand(CommandSender sender, ConnectionSide side, Boolean detailed, List<Range<Integer>> ranges) {
int count = 0;
// Remove each packet listener
for (Range<Integer> range : ranges) {
count += removePacketListeners(side, range.lowerEndpoint(), range.upperEndpoint(), detailed).size();
}
sendMessageSilently(sender, ChatColor.BLUE + "Fully removed " + count + " listeners.");
}
private void executeNamesCommand(CommandSender sender, ConnectionSide side, List<Range<Integer>> ranges) {
Set<Integer> named = getNamedPackets(side);
List<String> messages = new ArrayList<String>();
// Print the equivalent name of every given ID
for (Range<Integer> range : ranges) {
for (int id : range.asSet(DiscreteDomains.integers())) {
if (named.contains(id)) {
messages.add(ChatColor.BLUE + "" + id + ": " + Packets.getDeclaredName(id));
}
}
}
// Convert to two rows
messages = getMessagesInRows(messages, 2, CHAT_WIDTH);
// Print that
for (String message : messages) {
sendMessageSilently(sender, message);
}
}
private List<String> getMessagesInRows(List<String> messages, int rows, int totalWidth) {
List<String> output = new ArrayList<String>();
int columnWidth = totalWidth / rows;
@ -260,123 +261,7 @@ class CommandPacket implements CommandExecutor {
return output;
}
/**
* Parse ranges from an array of tokens.
* @param args - array of tokens.
* @param offset - beginning offset.
* @param legalRange - range of legal values.
* @return The parsed ranges.
*/
public static List<Range<Integer>> getRanges(String[] args, int offset, int lastIndex, Range<Integer> legalRange) {
List<String> tokens = tokenizeInput(args, offset, lastIndex);
List<Range<Integer>> ranges = new ArrayList<Range<Integer>>();
for (int i = 0; i < tokens.size(); i++) {
Range<Integer> range;
String current = tokens.get(i);
String next = i + 1 < tokens.size() ? tokens.get(i + 1) : null;
// Yoda equality is done for null-safety
if ("-".equals(current)) {
throw new IllegalArgumentException("A hyphen must appear between two numbers.");
} else if ("-".equals(next)) {
if (i + 2 >= tokens.size())
throw new IllegalArgumentException("Cannot form a range without a upper limit.");
// This is a proper range
range = Ranges.closed(Integer.parseInt(current), Integer.parseInt(tokens.get(i + 2)));
ranges.add(range);
// Skip the two next tokens
i += 2;
} else {
// Just a single number
range = Ranges.singleton(Integer.parseInt(current));
ranges.add(range);
}
// Validate ranges
if (!legalRange.encloses(range)) {
throw new IllegalArgumentException(range + " is not in the range " + range.toString());
}
}
return simplify(ranges, legalRange.upperEndpoint());
}
/**
* Simplify a list of ranges by assuming a maximum value.
* @param ranges - the list of ranges to simplify.
* @param maximum - the maximum value (minimum value is always 0).
* @return A simplified list of ranges.
*/
private static List<Range<Integer>> simplify(List<Range<Integer>> ranges, int maximum) {
List<Range<Integer>> result = new ArrayList<Range<Integer>>();
boolean[] set = new boolean[maximum + 1];
int start = -1;
// Set every ID
for (Range<Integer> range : ranges) {
for (int id : range.asSet(DiscreteDomains.integers())) {
set[id] = true;
}
}
// Generate ranges from this set
for (int i = 0; i <= set.length; i++) {
if (i < set.length && set[i]) {
if (start < 0) {
start = i;
}
} else {
if (start >= 0) {
result.add(Ranges.closed(start, i - 1));
start = -1;
}
}
}
return result;
}
private static List<String> tokenizeInput(String[] args, int offset, int lastIndex) {
List<String> tokens = new ArrayList<String>();
// Tokenize the input
for (int i = offset; i <= lastIndex; i++) {
String text = args[i];
StringBuilder number = new StringBuilder();
for (int j = 0; j < text.length(); j++) {
char current = text.charAt(j);
if (Character.isDigit(current)) {
number.append(current);
} else if (Character.isWhitespace(current)) {
// That's ok
} else if (current == '-') {
// Add the number token first
if (number.length() > 0) {
tokens.add(number.toString());
number.setLength(0);
}
tokens.add(Character.toString(current));
} else {
throw new IllegalArgumentException("Illegal character '" + current + "' found.");
}
}
// Add the number token, if it hasn't already
if (number.length() > 0)
tokens.add(number.toString());
}
return tokens;
}
/**
* Retrieve whitelist information about a given listener.
* @param listener - the given listener.

38
ProtocolLib/src/main/java/com/comphenix/protocol/CommandProtocol.java
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@ -1,8 +1,6 @@
package com.comphenix.protocol;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.plugin.Plugin;
@ -15,7 +13,7 @@ import com.comphenix.protocol.metrics.Updater.UpdateType;
*
* @author Kristian
*/
class CommandProtocol implements CommandExecutor {
class CommandProtocol extends CommandBase {
/**
* Name of this command.
*/
@ -25,33 +23,25 @@ class CommandProtocol implements CommandExecutor {
private Updater updater;
public CommandProtocol(Plugin plugin, Updater updater) {
super(CommandBase.PERMISSION_ADMIN, NAME, 1);
this.plugin = plugin;
this.updater = updater;
}
@Override
public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
// Make sure we're dealing with the correct command
if (!command.getName().equalsIgnoreCase(NAME))
protected boolean handleCommand(CommandSender sender, String[] args) {
String subCommand = args[0];
// Only return TRUE if we executed the correct command
if (subCommand.equalsIgnoreCase("config"))
reloadConfiguration(sender);
else if (subCommand.equalsIgnoreCase("check"))
checkVersion(sender);
else if (subCommand.equalsIgnoreCase("update"))
updateVersion(sender);
else
return false;
// We need one argument (the sub-command)
if (args != null && args.length == 1) {
String subCommand = args[0];
// Only return TRUE if we executed the correct command
if (subCommand.equalsIgnoreCase("config"))
reloadConfiguration(sender);
else if (subCommand.equalsIgnoreCase("check"))
checkVersion(sender);
else if (subCommand.equalsIgnoreCase("update"))
updateVersion(sender);
else
return false;
return true;
}
return false;
return true;
}
public void checkVersion(final CommandSender sender) {

142
ProtocolLib/src/main/java/com/comphenix/protocol/RangeParser.java Normal file
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@ -0,0 +1,142 @@
package com.comphenix.protocol;
import java.util.ArrayList;
import java.util.List;
import com.google.common.collect.DiscreteDomains;
import com.google.common.collect.Range;
import com.google.common.collect.Ranges;
/**
* Used to parse ranges in CommandPacket.
*
* @author Kristian
*/
class RangeParser {
/**
* Parse a range from a given text.
* @param text - the text.
* @param legalRange - range of legal values.
* @return The parsed ranges.
*/
public static List<Range<Integer>> getRanges(String text, Range<Integer> legalRange) {
return getRanges(new String[] { text }, 0, 0, legalRange);
}
/**
* Parse ranges from an array of elements.
* @param args - array of elements.
* @param offset - beginning offset.
* @param lastIndex - the last index of the array to read.
* @param legalRange - range of legal values.
* @return The parsed ranges.
*/
public static List<Range<Integer>> getRanges(String[] args, int offset, int lastIndex, Range<Integer> legalRange) {
List<String> tokens = tokenizeInput(args, offset, lastIndex);
List<Range<Integer>> ranges = new ArrayList<Range<Integer>>();
for (int i = 0; i < tokens.size(); i++) {
Range<Integer> range;
String current = tokens.get(i);
String next = i + 1 < tokens.size() ? tokens.get(i + 1) : null;
// Yoda equality is done for null-safety
if ("-".equals(current)) {
throw new IllegalArgumentException("A hyphen must appear between two numbers.");
} else if ("-".equals(next)) {
if (i + 2 >= tokens.size())
throw new IllegalArgumentException("Cannot form a range without a upper limit.");
// This is a proper range
range = Ranges.closed(Integer.parseInt(current), Integer.parseInt(tokens.get(i + 2)));
ranges.add(range);
// Skip the two next tokens
i += 2;
} else {
// Just a single number
range = Ranges.singleton(Integer.parseInt(current));
ranges.add(range);
}
// Validate ranges
if (!legalRange.encloses(range)) {
throw new IllegalArgumentException(range + " is not in the range " + range.toString());
}
}
return simplify(ranges, legalRange.upperEndpoint());
}
/**
* Simplify a list of ranges by assuming a maximum value.
* @param ranges - the list of ranges to simplify.
* @param maximum - the maximum value (minimum value is always 0).
* @return A simplified list of ranges.
*/
private static List<Range<Integer>> simplify(List<Range<Integer>> ranges, int maximum) {
List<Range<Integer>> result = new ArrayList<Range<Integer>>();
boolean[] set = new boolean[maximum + 1];
int start = -1;
// Set every ID
for (Range<Integer> range : ranges) {
for (int id : range.asSet(DiscreteDomains.integers())) {
set[id] = true;
}
}
// Generate ranges from this set
for (int i = 0; i <= set.length; i++) {
if (i < set.length && set[i]) {
if (start < 0) {
start = i;
}
} else {
if (start >= 0) {
result.add(Ranges.closed(start, i - 1));
start = -1;
}
}
}
return result;
}
private static List<String> tokenizeInput(String[] args, int offset, int lastIndex) {
List<String> tokens = new ArrayList<String>();
// Tokenize the input
for (int i = offset; i <= lastIndex; i++) {
String text = args[i];
StringBuilder number = new StringBuilder();
for (int j = 0; j < text.length(); j++) {
char current = text.charAt(j);
if (Character.isDigit(current)) {
number.append(current);
} else if (Character.isWhitespace(current)) {
// That's ok
} else if (current == '-') {
// Add the number token first
if (number.length() > 0) {
tokens.add(number.toString());
number.setLength(0);
}
tokens.add(Character.toString(current));
} else {
throw new IllegalArgumentException("Illegal character '" + current + "' found.");
}
}
// Add the number token, if it hasn't already
if (number.length() > 0)
tokens.add(number.toString());
}
return tokens;
}
}