[−][src]Struct abscissa_core::command::Help
Help command which prints usage information.
Generic over Command
types.
Fields
opts: Vec<String>
Obtain help for a particular subcommand
Trait Implementations
impl<C> Command for Help<C> where
C: Command,
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C: Command,
fn name() -> &'static str
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fn description() -> &'static str
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fn version() -> &'static str
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fn authors() -> &'static str
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fn from_args<A: IntoIterator<Item = String>>(into_args: A) -> Self
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Parse command-line arguments from a string iterator
fn from_env_args() -> Self
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Parse command-line arguments from the environment
fn print_usage_and_exit(args: &[String]) -> !
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Print usage information and exit
fn subcommand_usage(_command: &str) -> Option<Usage>
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Get usage information for a particular subcommand (if available)
impl<C> Runnable for Help<C> where
C: Command,
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C: Command,
impl<C: Default + Command> Default for Help<C>
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impl<C: Debug + Command> Debug for Help<C>
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impl<C> Options for Help<C> where
C: Command,
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C: Command,
fn parse<S: AsRef<str>>(parser: &mut Parser<S>) -> Result<Self, Error>
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fn parse_command<S: AsRef<str>>(
_name: &str,
parser: &mut Parser<S>
) -> Result<Self, Error>
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_name: &str,
parser: &mut Parser<S>
) -> Result<Self, Error>
fn usage() -> &'static str
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fn command_usage(_command: &str) -> Option<&'static str>
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fn command_list() -> Option<&'static str>
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fn command_name(&self) -> Option<&'static str>
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Returns the name of a parsed command, if present. Read more
fn help_requested(&self) -> bool
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Returns whether the user supplied a "help" option to request usage information about the program or any contained subcommands. Read more
fn parse_args<S>(args: &[S], style: ParsingStyle) -> Result<Self, Error> where
S: AsRef<str>,
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S: AsRef<str>,
Parses arguments received from the command line. Read more
fn parse_args_or_exit(style: ParsingStyle) -> Self
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Parses arguments from the environment. Read more
fn parse_args_default_or_exit() -> Self
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Parses arguments from the environment, using the default parsing style. Read more
fn parse_args_default<S>(args: &[S]) -> Result<Self, Error> where
S: AsRef<str>,
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S: AsRef<str>,
Parses arguments received from the command line, using the default parsing style. Read more
Auto Trait Implementations
impl<C> Sync for Help<C> where
C: Sync,
C: Sync,
impl<C> Send for Help<C> where
C: Send,
C: Send,
impl<C> Unpin for Help<C> where
C: Unpin,
C: Unpin,
impl<C> RefUnwindSafe for Help<C> where
C: RefUnwindSafe,
C: RefUnwindSafe,
impl<C> UnwindSafe for Help<C> where
C: UnwindSafe,
C: UnwindSafe,
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,