diff options
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/cli/GenericCommandMode.java')
| -rw-r--r-- | BJC-Utils2/src/main/java/bjc/utils/cli/GenericCommandMode.java | 111 |
1 files changed, 53 insertions, 58 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/cli/GenericCommandMode.java b/BJC-Utils2/src/main/java/bjc/utils/cli/GenericCommandMode.java index b3847c0..62d0008 100644 --- a/BJC-Utils2/src/main/java/bjc/utils/cli/GenericCommandMode.java +++ b/BJC-Utils2/src/main/java/bjc/utils/cli/GenericCommandMode.java @@ -10,9 +10,9 @@ import bjc.utils.funcdata.IMap; /** * A general command mode, with a customizable set of commands * - * There is a small set of commands which is handled by default. The first - * is 'list', which lists all the commands the user can input. The second - * is 'alias', which allows the user to bind a new name to a command + * There is a small set of commands which is handled by default. The first is + * 'list', which lists all the commands the user can input. The second is + * 'alias', which allows the user to bind a new name to a command * * @author ben * @@ -44,9 +44,9 @@ public class GenericCommandMode implements ICommandMode { * Create a new generic command mode * * @param normalOutput - * The function to use for normal output + * The function to use for normal output * @param errorOutput - * The function to use for error output + * The function to use for error output */ public GenericCommandMode(Consumer<String> normalOutput, Consumer<String> errorOutput) { if (normalOutput == null) { @@ -58,10 +58,11 @@ public class GenericCommandMode implements ICommandMode { this.normalOutput = normalOutput; this.errorOutput = errorOutput; - // Initialize handler maps so that they sort in alphabetical order + // Initialize handler maps so that they sort in alphabetical + // order commandHandlers = new FunctionalMap<>(new TreeMap<>()); defaultHandlers = new FunctionalMap<>(new TreeMap<>()); - helpTopics = new FunctionalMap<>(new TreeMap<>()); + helpTopics = new FunctionalMap<>(new TreeMap<>()); setupDefaultCommands(); } @@ -70,27 +71,25 @@ public class GenericCommandMode implements ICommandMode { * Add an alias to an existing command * * @param commandName - * The name of the command to add an alias for + * The name of the command to add an alias for * @param aliasName - * The new alias for the command + * The new alias for the command * * @throws IllegalArgumentException - * if the specified command doesn't have a bound handler, - * or if the alias name already has a bound value + * if the specified command doesn't have a bound + * handler, or if the alias name already has a bound + * value */ public void addCommandAlias(String commandName, String aliasName) { if (commandName == null) { throw new NullPointerException("Command name must not be null"); } else if (aliasName == null) { throw new NullPointerException("Alias name must not be null"); - } else if (!commandHandlers.containsKey(commandName) - && !defaultHandlers.containsKey(commandName)) { - throw new IllegalArgumentException("Cannot alias non-existant command '" - + commandName + "'"); - } else if (commandHandlers.containsKey(aliasName) - || defaultHandlers.containsKey(aliasName)) { - throw new IllegalArgumentException("Cannot bind alias '" - + aliasName + "' to a command with a bound handler"); + } else if (!commandHandlers.containsKey(commandName) && !defaultHandlers.containsKey(commandName)) { + throw new IllegalArgumentException("Cannot alias non-existant command '" + commandName + "'"); + } else if (commandHandlers.containsKey(aliasName) || defaultHandlers.containsKey(aliasName)) { + throw new IllegalArgumentException( + "Cannot bind alias '" + aliasName + "' to a command with a bound handler"); } else { ICommand aliasedCommand; @@ -108,13 +107,13 @@ public class GenericCommandMode implements ICommandMode { * Add a command to this command mode * * @param command - * The name of the command to add + * The name of the command to add * @param handler - * The handler to use for the specified command + * The handler to use for the specified command * * @throws IllegalArgumentException - * if the specified command already has a handler - * registered + * if the specified command already has a handler + * registered */ public void addCommandHandler(String command, ICommand handler) { if (command == null) { @@ -122,8 +121,7 @@ public class GenericCommandMode implements ICommandMode { } else if (handler == null) { throw new NullPointerException("Handler must not be null"); } else if (canHandle(command)) { - throw new IllegalArgumentException("Command " + - command + " already has a handler registered"); + throw new IllegalArgumentException("Command " + command + " already has a handler registered"); } else { commandHandlers.put(command, handler); } @@ -133,9 +131,9 @@ public class GenericCommandMode implements ICommandMode { * Add a help topic to this command mode that isn't tied to a command * * @param topicName - * The name of the topic + * The name of the topic * @param topic - * The contents of the topic + * The contents of the topic */ public void addHelpTopic(String topicName, ICommandHelp topic) { helpTopics.put(topicName, topic); @@ -147,9 +145,9 @@ public class GenericCommandMode implements ICommandMode { private GenericCommand buildAliasCommand() { String aliasShortHelp = "alias\tAlias one command to another"; - String aliasLongHelp = "Gives a command another name it can be invoked by." - +" Invoke with two arguments: the name of the command to alias" - + "followed by the name of the alias to give that command."; + String aliasLongHelp = "Gives a command another name it can be invoked by." + + " Invoke with two arguments: the name of the command to alias" + + "followed by the name of the alias to give that command."; return new GenericCommand((args) -> { doAliasCommands(args); @@ -160,8 +158,7 @@ public class GenericCommandMode implements ICommandMode { private GenericCommand buildClearCommands() { String clearShortHelp = "clear\tClear the screen"; - String clearLongHelp = "Clears the screen of all the text on it," - + " and prints a new prompt."; + String clearLongHelp = "Clears the screen of all the text on it," + " and prints a new prompt."; return new GenericCommand((args) -> { errorOutput.accept("ERROR: This console doesn't support screen clearing"); @@ -172,8 +169,8 @@ public class GenericCommandMode implements ICommandMode { private GenericCommand buildExitCommand() { String exitShortHelp = "exit\tExit the console"; - String exitLongHelp = "First prompts the user to make sure they want to" - + " exit, then quits if they say they do"; + String exitLongHelp = "First prompts the user to make sure they want to" + + " exit, then quits if they say they do"; return new GenericCommand((args) -> { errorOutput.accept("ERROR: This console doesn't support auto-exiting"); @@ -184,11 +181,10 @@ public class GenericCommandMode implements ICommandMode { private GenericCommand buildHelpCommand() { String helpShortHelp = "help\tConsult the help system"; - String helpLongHelp = "Consults the internal help system." - + " Invoked in two different ways. Invoking with no arguments" - + " causes all the topics you can ask for details on to be list," - + " while invoking with the name of a topic will print the entry" - + " for that topic"; + String helpLongHelp = "Consults the internal help system." + + " Invoked in two different ways. Invoking with no arguments" + + " causes all the topics you can ask for details on to be list," + + " while invoking with the name of a topic will print the entry" + " for that topic"; return new GenericCommand((args) -> { if (args == null || args.length == 0) { @@ -205,8 +201,8 @@ public class GenericCommandMode implements ICommandMode { private GenericCommand buildListCommand() { String listShortHelp = "list\tList available commands"; - String listLongHelp = "Lists all of the commands available in this mode," - + " as well as commands available in any mode"; + String listLongHelp = "Lists all of the commands available in this mode," + + " as well as commands available in any mode"; return new GenericCommand((args) -> { doListCommands(); @@ -235,8 +231,7 @@ public class GenericCommandMode implements ICommandMode { if (!canHandle(commandName)) { errorOutput.accept("ERROR: '" + commandName + "' is not a valid command."); } else if (canHandle(aliasName)) { - errorOutput.accept("ERROR: Cannot overwrite command '" - + aliasName + "'"); + errorOutput.accept("ERROR: Cannot overwrite command '" + aliasName + "'"); } else { addCommandAlias(commandName, aliasName); } @@ -251,12 +246,12 @@ public class GenericCommandMode implements ICommandMode { } else if (defaultHandlers.containsKey(commandName)) { String desc = defaultHandlers.get(commandName).getHelp().getDescription(); - normalOutput.accept("\n" + desc); + normalOutput.accept("\n" + desc); } else if (helpTopics.containsKey(commandName)) { normalOutput.accept("\n" + helpTopics.get(commandName).getDescription()); } else { - errorOutput.accept("ERROR: I'm sorry, but there is no help available for '" - + commandName + "'"); + errorOutput.accept( + "ERROR: I'm sorry, but there is no help available for '" + commandName + "'"); } } @@ -301,7 +296,7 @@ public class GenericCommandMode implements ICommandMode { normalOutput.accept("\t" + commandName); }); - normalOutput.accept( "\nThe following commands are available in all modes:\n"); + normalOutput.accept("\nThe following commands are available in all modes:\n"); defaultHandlers.keyList().forEach(commandName -> { normalOutput.accept("\t" + commandName); }); @@ -342,8 +337,7 @@ public class GenericCommandMode implements ICommandMode { return commandHandlers.get(command).getHandler().handle(args); } else { if (args != null) { - errorOutput.accept("ERROR: Unrecognized command " - + command + String.join(" ", args)); + errorOutput.accept("ERROR: Unrecognized command " + command + String.join(" ", args)); } else { errorOutput.accept("ERROR: Unrecognized command " + command); } @@ -362,8 +356,8 @@ public class GenericCommandMode implements ICommandMode { * Set the custom prompt for this mode * * @param prompt - * The custom prompt for this mode, or null to disable the - * custom prompt + * The custom prompt for this mode, or null to disable + * the custom prompt */ public void setCustomPrompt(String prompt) { customPrompt = prompt; @@ -373,8 +367,8 @@ public class GenericCommandMode implements ICommandMode { * Set the name of this mode * * @param name - * The desired name of this mode, or null to use the default - * name + * The desired name of this mode, or null to use the + * default name */ public void setModeName(String name) { modeName = name; @@ -384,8 +378,8 @@ public class GenericCommandMode implements ICommandMode { * Set the handler to use for unknown commands * * @param handler - * The handler to use for unknown commands, or null to throw - * on unknown commands + * The handler to use for unknown commands, or null to + * throw on unknown commands */ public void setUnknownCommandHandler(BiConsumer<String, String[]> handler) { if (handler == null) { @@ -396,15 +390,16 @@ public class GenericCommandMode implements ICommandMode { } private void setupDefaultCommands() { - defaultHandlers.put("list", buildListCommand()); + defaultHandlers.put("list", buildListCommand()); defaultHandlers.put("alias", buildAliasCommand()); - defaultHandlers.put("help", buildHelpCommand()); + defaultHandlers.put("help", buildHelpCommand()); addCommandAlias("help", "man"); // Add commands handled in a upper layer. - // @TODO figure out a place to put commands that apply across all + // @TODO figure out a place to put commands that apply across + // all // modes, but only apply to a specific application defaultHandlers.put("clear", buildClearCommands()); defaultHandlers.put("exit", buildExitCommand()); |