CommandLineHandler

Handles the Command Line options and commands.

struct CommandLineHandler {

CommandGroup[] commandGroups;

CommonOptions options;

string[] commandNames();

void prepareOptions(CommandArgs args);

Command getCommand(string name);

Command prepareCommand(string name, CommandArgs args);

}

Members

Functions

commandNames string[] commandNames(): Create the list of all supported commands
getCommand Command getCommand(string name): Get an instance of the requested command.
prepareCommand Command prepareCommand(string name, CommandArgs args): Get an instance of the requested command after the args are sent.
prepareOptions void prepareOptions(CommandArgs args): Parses the general options and sets up the log level and the root_path

Variables

commandGroups CommandGroup[] commandGroups;: The list of commands that can be handled
options CommonOptions options;: General options parser

Examples

Can get the command names

CommandLineHandler handler;
handler.commandGroups = getCommands();

assert(handler.commandNames == ["init", "run", "build", "test", "lint", "generate",
	"describe", "clean", "dustmite", "fetch", "add", "remove",
	"upgrade", "add-path", "remove-path", "add-local", "remove-local", "list", "search",
	"add-override", "remove-override", "list-overrides", "clean-caches", "convert"]);

It sets the cwd as root_path by default

CommandLineHandler handler;

auto args = new CommandArgs([]);
handler.prepareOptions(args);
assert(handler.options.root_path == getcwd());

It can set a custom root_path

CommandLineHandler handler;

auto args = new CommandArgs(["--root=/tmp/test"]);
handler.prepareOptions(args);
assert(handler.options.root_path == "/tmp/test".absolutePath.buildNormalizedPath);

args = new CommandArgs(["--root=./test"]);
handler.prepareOptions(args);
assert(handler.options.root_path == "./test".absolutePath.buildNormalizedPath);

It sets the info log level by default

scope(exit) setLogLevel(LogLevel.info);
CommandLineHandler handler;

auto args = new CommandArgs([]);
handler.prepareOptions(args);
assert(getLogLevel() == LogLevel.info);

It can set a custom error level

scope(exit) setLogLevel(LogLevel.info);
CommandLineHandler handler;

auto args = new CommandArgs(["--vverbose"]);
handler.prepareOptions(args);
assert(getLogLevel() == LogLevel.debug_);

handler = CommandLineHandler();
args = new CommandArgs(["--verbose"]);
handler.prepareOptions(args);
assert(getLogLevel() == LogLevel.diagnostic);

handler = CommandLineHandler();
args = new CommandArgs(["--vquiet"]);
handler.prepareOptions(args);
assert(getLogLevel() == LogLevel.none);

handler = CommandLineHandler();
args = new CommandArgs(["--quiet"]);
handler.prepareOptions(args);
assert(getLogLevel() == LogLevel.warn);

handler = CommandLineHandler();
args = new CommandArgs(["--verror"]);
handler.prepareOptions(args);
assert(getLogLevel() == LogLevel.error);

It returns the run command by default

CommandLineHandler handler;
handler.commandGroups = getCommands();
assert(handler.getCommand("").name == "run");

It returns the help command when there is none set and the --help arg was set

CommandLineHandler handler;
auto args = new CommandArgs(["--help"]);
handler.prepareOptions(args);
handler.commandGroups = getCommands();
assert(cast(HelpCommand)handler.getCommand("") !is null);

It returns the help command when the help command is sent

CommandLineHandler handler;
handler.commandGroups = getCommands();
assert(cast(HelpCommand) handler.getCommand("help") !is null);

It returns the init command when the init command is sent

CommandLineHandler handler;
handler.commandGroups = getCommands();
assert(handler.getCommand("init").name == "init");

It returns null when a missing command is sent

CommandLineHandler handler;
handler.commandGroups = getCommands();
assert(handler.getCommand("missing") is null);

CommandLineHandler

Members

Functions

Variables

Examples

Meta

Source