LoginSystem/src/main/java/fr/xephi/authme/command/CommandDescription.java
2015-11-21 17:18:58 +01:00

926 lines
29 KiB
Java

package fr.xephi.authme.command;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.bukkit.command.CommandSender;
import fr.xephi.authme.util.StringUtils;
/**
*/
public class CommandDescription {
/** Defines the acceptable labels. */
private List<String> labels = new ArrayList<>();
/** Command description. */
private String description = "";
/** Detailed description. */
private String detailedDescription = "";
/** The executable command instance. */
private ExecutableCommand executableCommand;
/** The parent command. */
private CommandDescription parent = null;
/** The child labels. */
private List<CommandDescription> children = new ArrayList<>();
/** The command arguments. */
private List<CommandArgumentDescription> arguments = new ArrayList<>();
/** Defines whether there is an argument maximum or not. */
private boolean noArgumentMaximum = false;
/** Defines the command permissions. */
private CommandPermissions permissions = new CommandPermissions();
/**
* Constructor.
*
* @param executableCommand The executable command, or null.
* @param label Command label.
* @param description Command description.
* @param detailedDescription Detailed comment description.
* @param parent Parent command.
*/
public CommandDescription(ExecutableCommand executableCommand, String label, String description, String detailedDescription, CommandDescription parent) {
this(executableCommand, label, description, parent, detailedDescription, null);
}
/**
* Constructor.
*
* @param executableCommand The executable command, or null.
* @param labels List of command labels.
* @param description Command description.
* @param detailedDescription Detailed comment description.
* @param parent Parent command.
*/
public CommandDescription(ExecutableCommand executableCommand, List<String> labels, String description, String detailedDescription, CommandDescription parent) {
this(executableCommand, labels, description, detailedDescription, parent, null);
}
/**
* Constructor.
*
* @param executableCommand The executable command, or null.
* @param label Command label.
* @param description Command description.
* @param parent Parent command.
* @param detailedDescription Detailed comment description.
* @param arguments Command arguments.
*/
public CommandDescription(ExecutableCommand executableCommand, String label, String description, CommandDescription parent, String detailedDescription, List<CommandArgumentDescription> arguments) {
setExecutableCommand(executableCommand);
setLabel(label);
setDescription(description);
setDetailedDescription(detailedDescription);
setParent(parent);
setArguments(arguments);
}
/**
* Constructor.
*
* @param executableCommand The executable command, or null.
* @param labels List of command labels.
* @param description Command description.
* @param detailedDescription Detailed comment description.
* @param parent Parent command.
* @param arguments Command arguments.
*/
public CommandDescription(ExecutableCommand executableCommand, List<String> labels, String description, String detailedDescription, CommandDescription parent, List<CommandArgumentDescription> arguments) {
setExecutableCommand(executableCommand);
setLabels(labels);
setDescription(description);
setDetailedDescription(detailedDescription);
setParent(parent);
setArguments(arguments);
}
/**
* Get the first relative command label.
*
* @return First relative command label. */
public String getLabel() {
// Ensure there's any item in the command list
if(this.labels.size() == 0)
return "";
// Return the first command on the list
return this.labels.get(0);
}
/**
* Get the label most similar to the reference. The first label will be returned if no reference was supplied.
*
* @param reference The command reference.
*
* @return The most similar label, or the first label. An empty label will be returned if no label was set. */
public String getLabel(CommandParts reference) {
// Ensure there's any item in the command list
if(this.labels.size() == 0)
return "";
// Return the first label if we can't use the reference
if(reference == null)
return this.labels.get(0);
// Get the correct label from the reference
String preferred = reference.get(getParentCount());
// Check whether the preferred label is in the label list
double currentDifference = -1;
String currentLabel = this.labels.get(0);
for(String entry : this.labels) {
double entryDifference = StringUtils.getDifference(entry, preferred);
if(entryDifference < currentDifference || currentDifference < 0) {
currentDifference = entryDifference;
currentLabel = entry;
}
}
// Return the most similar label
return currentLabel;
}
/**
* Get all relative command labels.
*
* @return All relative labels labels. */
public List<String> getLabels() {
return this.labels;
}
/**
* Set the list of command labels.
*
* @param labels New list of command labels. Null to clear the list of labels.
*/
public void setLabels(List<String> labels) {
// Check whether the command label list should be cleared
if(labels == null)
this.labels.clear();
else
this.labels = labels;
}
/**
* Set the command label, this will append the command label to already existing ones.
*
* @param commandLabel Command label to set or add.
*/
public void setLabel(String commandLabel) {
setLabel(commandLabel, false);
}
/**
* Set the command label.
*
* @param commandLabel Command label to set.
* @param overwrite True to replace all old command labels, false to append this command label to the currently
* existing labels.
*
* @return Trie if the command label is added, or if it was added already. False on failure. */
public boolean setLabel(String commandLabel, boolean overwrite) {
// Check whether this new command should overwrite the previous ones
if(!overwrite)
return addLabel(commandLabel);
// Replace all labels with this new one
this.labels.clear();
return this.labels.add(commandLabel);
}
/**
* Add a command label to the list.
*
* @param commandLabel Command label to add.
*
* @return True if the label was added, or if it was added already. False on error. */
public boolean addLabel(String commandLabel) {
// Verify the label
if(!isValidLabel(commandLabel))
return false;
// Ensure this command isn't a duplicate
if(hasLabel(commandLabel))
return true;
// Add the command to the list
return this.labels.add(commandLabel);
}
/**
* Add a list of command labels.
*
* @param commandLabels List of command labels to add.
*
* @return True if succeed, false on failure. */
public boolean addLabels(List<String> commandLabels) {
// Add each command label separately
for(String cmd : commandLabels)
if(!addLabel(cmd))
return false;
return true;
}
/**
* Check whether this command description has a specific command.
*
* @param commandLabel Command to check for.
*
* @return True if this command label equals to the param command. */
public boolean hasLabel(String commandLabel) {
// Check whether any command matches with the argument
for(String entry : this.labels)
if(commandLabelEquals(entry, commandLabel))
return true;
// No match found, return false
return false;
}
/**
* Check whether this command description has a list of labels
* @param commandLabels List of labels
* @return True if all labels match, false otherwise */
public boolean hasLabels(List<String> commandLabels) {
// Check if there's a match for every command
for(String cmd : commandLabels)
if(!hasLabel(cmd))
return false;
// There seems to be a match for every command, return true
return true;
}
/**
* Check whether this command label is applicable with a command reference. This doesn't check if the parent
* are suitable too.
*
* @param commandReference The command reference.
*
* @return True if the command reference is suitable to this command label, false otherwise. */
public boolean isSuitableLabel(CommandParts commandReference) {
// Make sure the command reference is valid
if(commandReference.getCount() <= 0)
return false;
// Get the parent count
String element = commandReference.get(getParentCount());
// Check whether this command description has this command label
return hasLabel(element);
}
/**
* Check whether a label is valid to use.
*
* @param label The label to test.
*
* @return True if the label is valid to use, false otherwise. */
public static boolean isValidLabel(String label) {
// Make sure the label isn't null
if(label == null)
return false;
// Trim the label
label = label.trim();
// Make sure the label is at least one character long
if(label.length() <= 0)
return false;
// Make sure the label doesn't contain any spaces, return the result
return !label.contains(" ");
}
/**
* Get the absolute command label, without a slash.
* @return String */
public String getAbsoluteLabel() {
return getAbsoluteLabel(false);
}
/**
* Get the absolute command label.
*
* @param includeSlash boolean
* @return Absolute command label. */
public String getAbsoluteLabel(boolean includeSlash) {
return getAbsoluteLabel(includeSlash, null);
}
/**
* Get the absolute command label.
*
* @param includeSlash boolean
* @param reference CommandParts
* @return Absolute command label. */
public String getAbsoluteLabel(boolean includeSlash, CommandParts reference) {
// Get the command reference, and make sure it is valid
CommandParts out = getCommandReference(reference);
if(out == null)
return "";
// Return the result
return (includeSlash ? "/" : "") + out.toString();
}
/**
* Get the command reference.
*
* @param reference The reference to use as template, which is used to choose the most similar reference.
*
* @return Command reference. */
public CommandParts getCommandReference(CommandParts reference) {
// Build the reference
List<String> referenceList = new ArrayList<>();
// Check whether this command has a parent, if so, add the absolute parent command
if(getParent() != null)
referenceList.addAll(getParent().getCommandReference(reference).getList());
// Get the current label
referenceList.add(getLabel(reference));
// Return the reference
return new CommandParts(referenceList);
}
/**
* Get the difference between this command and another command reference.
*
* @param other The other command reference.
*
* @return The command difference. Zero if there's no difference. A negative number on error. */
public double getCommandDifference(CommandParts other) {
return getCommandDifference(other, false);
}
/**
* Get the difference between this command and another command reference.
*
* @param other The other command reference.
* @param fullCompare True to fully compare both command references.
*
* @return The command difference. Zero if there's no difference. A negative number on error. */
public double getCommandDifference(CommandParts other, boolean fullCompare) {
// Make sure the reference is valid
if(other == null)
return -1;
// Get the command reference
CommandParts reference = getCommandReference(other);
// Compare the two references, return the result
return reference.getDifference(new CommandParts(other.getRange(0, reference.getCount())), fullCompare);
}
/**
* Get the executable command.
*
* @return The executable command. */
public ExecutableCommand getExecutableCommand() {
return this.executableCommand;
}
/**
* Set the executable command.
*
* @param executableCommand The executable command.
*/
public void setExecutableCommand(ExecutableCommand executableCommand) {
this.executableCommand = executableCommand;
}
/**
* Check whether this command is executable, based on the assigned executable command.
*
* @return True if this command is executable. */
public boolean isExecutable() {
return this.executableCommand != null;
}
/**
* Execute the command, if possible.
*
* @param sender The command sender that triggered the execution of this command.
* @param commandReference The command reference.
* @param commandArguments The command arguments.
*
* @return True on success, false on failure. */
public boolean execute(CommandSender sender, CommandParts commandReference, CommandParts commandArguments) {
// Make sure the command is executable
if(!isExecutable())
return false;
// Execute the command, return the result
return getExecutableCommand().executeCommand(sender, commandReference, commandArguments);
}
/**
* Get the parent command if this command description has a parent.
*
* @return Parent command, or null */
public CommandDescription getParent() {
return this.parent;
}
/**
* Get the number of parent this description has.
*
* @return The number of parents. */
public int getParentCount() {
// Check whether the this description has a parent
if(!hasParent())
return 0;
// Get the parent count of the parent, return the result
return getParent().getParentCount() + 1;
}
/**
* Set the parent command.
*
* @param parent Parent command.
*
* @return True on success, false on failure. */
public boolean setParent(CommandDescription parent) {
// Make sure the parent is different
if(this.parent == parent)
return true;
// Set the parent
this.parent = parent;
// Make sure the parent isn't null
if(parent == null)
return true;
// Add this description as a child to the parent
return parent.addChild(this);
}
/**
* Check whether the plugin description has a parent command.
*
* @return True if the description has a parent command, false otherwise. */
public boolean hasParent() {
return this.parent != null;
}
/**
* Get all command children.
*
* @return Command children. */
public List<CommandDescription> getChildren() {
return this.children;
}
/**
* Add a child to the command description.
*
* @param commandDescription The child to add.
*
* @return True on success, false on failure. */
public boolean addChild(CommandDescription commandDescription) {
// Make sure the description is valid
if(commandDescription == null)
return false;
if(!commandDescription.isValid())
return false;
// Make sure the child doesn't exist already
if(isChild(commandDescription))
return true;
// The command description to add as a child
if(!this.children.add(commandDescription))
return false;
// Set this description as parent on the child
return commandDescription.setParent(this);
}
/**
* Set the children of this command.
*
* @param children New command children. Null to remove all children.
*/
public void setChildren(List<CommandDescription> children) {
// Check whether the children list should be cleared
if(children == null)
this.children.clear();
else
this.children = children;
}
/**
* Check whether this command has any child labels.
*
* @return True if this command has any child labels. */
public boolean hasChilds() {
return (this.children.size() != 0);
}
/**
* Check if this command description has a specific child.
*
* @param commandDescription The command description to check for.
*
* @return True if this command description has the specific child, false otherwise. */
public boolean isChild(CommandDescription commandDescription) {
// Make sure the description is valid
if(commandDescription == null)
return false;
if(!commandDescription.isValid())
return false;
// Check whether this child exists, return the result
return this.children.contains(commandDescription);
}
/**
* Add an argument.
*
* @param argument The argument to add.
*
* @return True if succeed, false if failed. */
public boolean addArgument(CommandArgumentDescription argument) {
// Make sure the argument is valid
if(argument == null)
return false;
// Make sure the argument isn't added already
if(hasArgument(argument))
return true;
// Add the argument, return the result
return this.arguments.add(argument);
}
/**
* Get all command arguments.
*
* @return Command arguments. */
public List<CommandArgumentDescription> getArguments() {
return this.arguments;
}
/**
* Set the arguments of this command.
*
* @param arguments New command arguments. Null to clear the list of arguments.
*/
public void setArguments(List<CommandArgumentDescription> arguments) {
// Convert null into an empty argument list
if(arguments == null)
this.arguments.clear();
else
this.arguments = arguments;
}
/**
* Check whether an argument exists.
*
* @param argument The argument to check for.
*
* @return True if this argument already exists, false otherwise. */
public boolean hasArgument(CommandArgumentDescription argument) {
// Make sure the argument is valid
if(argument == null)
return false;
// Check whether the argument exists, return the result
return this.arguments.contains(argument);
}
/**
* Check whether this command has any arguments.
*
* @return True if this command has any arguments. */
public boolean hasArguments() {
return (this.arguments.size() != 0);
}
/**
* The minimum number of arguments required for this command.
*
* @return The minimum number of required arguments. */
public int getMinimumArguments() {
// Get the number of required and optional arguments
int requiredArguments = 0;
int optionalArgument = 0;
// Loop through each argument
for(CommandArgumentDescription argument : this.arguments) {
// Check whether the command is optional
if(!argument.isOptional()) {
requiredArguments += optionalArgument + 1;
optionalArgument = 0;
} else
optionalArgument++;
}
// Return the number of required arguments
return requiredArguments;
}
/**
* Get the maximum number of arguments.
*
* @return The maximum number of arguments. A negative number will be returned if there's no maximum. */
public int getMaximumArguments() {
// Check whether there is a maximum set
if(this.noArgumentMaximum)
return -1;
// Return the maximum based on the registered arguments
return this.arguments.size();
}
/**
* Set whether there is an argument maximum.
*
* @param maximumArguments True if there is an argument maximum, based on the number of registered arguments.
*/
// TODO ljacqu 20151121: Rename the setter
public void setMaximumArguments(boolean maximumArguments) {
this.noArgumentMaximum = !maximumArguments;
}
/**
* Get the command description.
*
* @return Command description. */
public String getDescription() {
return hasDescription() ? this.description : this.detailedDescription;
}
/**
* Set the command description.
*
* @param description New command description. Null to reset the description.
*/
public void setDescription(String description) {
if(description == null)
this.description = "";
else
this.description = description;
}
/**
* Check whether this command has any description.
*
* @return True if this command has any description. */
public boolean hasDescription() {
return (this.description.trim().length() != 0);
}
/**
* Get the command detailed description.
*
* @return Command detailed description. */
public String getDetailedDescription() {
return hasDetailedDescription() ? this.detailedDescription : this.description;
}
/**
* Set the command detailed description.
*
* @param detailedDescription New command description. Null to reset the description.
*/
public void setDetailedDescription(String detailedDescription) {
if(detailedDescription == null)
this.detailedDescription = "";
else
this.detailedDescription = detailedDescription;
}
/**
* Check whether this command has any detailed description.
*
* @return True if this command has any detailed description. */
public boolean hasDetailedDescription() {
return (this.detailedDescription.trim().length() != 0);
}
/**
* Find the best suitable command for a query reference.
*
* @param queryReference The query reference to find a command for.
*
* @return The command found, or null. */
public FoundCommandResult findCommand(final CommandParts queryReference) {
// Make sure the command reference is valid
if(queryReference.getCount() <= 0)
return null;
// Check whether this description is for the last element in the command reference, if so return the current command
if(queryReference.getCount() <= getParentCount() + 1)
return new FoundCommandResult(
this,
getCommandReference(queryReference),
new CommandParts(),
queryReference);
// Get the new command reference and arguments
CommandParts newReference = new CommandParts(queryReference.getRange(0, getParentCount() + 1));
CommandParts newArguments = new CommandParts(queryReference.getRange(getParentCount() + 1));
// Handle the child's, if this command has any
if(getChildren().size() > 0) {
// Get a new instance of the child's list, and sort them by their difference in comparison to the query reference
List<CommandDescription> commandChildren = new ArrayList<>(getChildren());
Collections.sort(commandChildren, new Comparator<CommandDescription>() {
@Override
public int compare(CommandDescription o1, CommandDescription o2) {
return Double.compare(
o1.getCommandDifference(queryReference),
o2.getCommandDifference(queryReference));
}
});
// Get the difference of the first child in the list
double firstChildDifference = commandChildren.get(0).getCommandDifference(queryReference, true);
// Check if the reference perfectly suits the arguments of the current command if it doesn't perfectly suits a child command
if(firstChildDifference > 0.0)
if(getSuitableArgumentsDifference(queryReference) == 0)
return new FoundCommandResult(this, newReference, newArguments, queryReference);
// Loop through each child
for(CommandDescription child : commandChildren) {
// Get the best suitable command
FoundCommandResult result = child.findCommand(queryReference);
if(result != null)
return result;
}
}
// Check if the remaining command reference elements fit the arguments for this command
if(getSuitableArgumentsDifference(queryReference) >= 0)
return new FoundCommandResult(this, newReference, newArguments, queryReference);
// No command found, return null
return null;
}
/**
* Check whether there's any command description that matches the specified command reference.
*
* @param commandReference The command reference.
*
* @return True if so, false otherwise. */
public boolean hasSuitableCommand(CommandParts commandReference) {
return findCommand(commandReference) != null;
}
/**
* Check if the remaining command reference elements are suitable with arguments of the current command description.
*
* @param commandReference The command reference.
*
* @return True if the arguments are suitable, false otherwise. */
public boolean hasSuitableArguments(CommandParts commandReference) {
return getSuitableArgumentsDifference(commandReference) == 0;
}
/**
* Check if the remaining command reference elements are suitable with arguments of the current command description,
* and get the difference in argument count.
*
* @param commandReference The command reference.
*
* @return The difference in argument count between the reference and the actual command. */
public int getSuitableArgumentsDifference(CommandParts commandReference) {
// Make sure the command reference is valid
if(commandReference.getCount() <= 0)
return -1;
// Get the remaining command reference element count
int remainingElementCount = commandReference.getCount() - getParentCount() - 1;
// Check if there are too less arguments
if(getMinimumArguments() > remainingElementCount)
return Math.abs(getMinimumArguments() - remainingElementCount);
// Check if there are too many arguments
if(getMaximumArguments() < remainingElementCount && getMaximumArguments() >= 0)
return Math.abs(remainingElementCount - getMaximumArguments());
// The arguments seem to be EQUALS, return the result
return 0;
}
/**
* Get the command permissions.
*
* @return The command permissions. */
public CommandPermissions getCommandPermissions() {
return this.permissions;
}
/**
* Set the command permissions.
*
* @param commandPermissions The command permissions.
*/
public void setCommandPermissions(CommandPermissions commandPermissions) {
this.permissions = commandPermissions;
}
/**
* Set the command permissions.
*
* @param permissionNode The permission node required.
* @param defaultPermission The default permission.
*/
public void setCommandPermissions(String permissionNode, CommandPermissions.DefaultPermission defaultPermission) {
this.permissions = new CommandPermissions(permissionNode, defaultPermission);
}
/**
* Check whether two labels equal to each other.
*
* @param commandLabel The first command label.
* @param otherCommandLabel The other command label.
*
* @return True if the labels are equal to each other. */
private static boolean commandLabelEquals(String commandLabel, String otherCommandLabel) {
// Trim the command labels from unwanted whitespaces
commandLabel = commandLabel.trim();
otherCommandLabel = otherCommandLabel.trim();
// Check whether the the two command labels are equal (case insensitive)
return (commandLabel.equalsIgnoreCase(otherCommandLabel));
}
/**
* Check whether the command description has been set up properly.
*
* @return True if the command description is valid, false otherwise. */
public boolean isValid() {
// Make sure any command label is set
if(getLabels().size() == 0)
return false;
// Make sure the permissions are set up properly
if(this.permissions == null)
return false;
// Everything seems to be correct, return the result
return true;
}
}