Mix.Shell behaviour
Defines Mix.Shell
contract.
Summary
Callbacks
- cmd(command)
-
Executes the given command and returns its exit status.
- cmd(command, options)
-
Executes the given command and returns its exit status.
- error(message)
-
Prints the given ANSI error to the shell.
- info(message)
-
Prints the given ANSI message to the shell.
- print_app()
-
Prints the current application to the shell if it was not printed yet.
- prompt(message)
-
Prompts the user for input.
- yes?(message)
-
Prompts the user for confirmation.
- yes?(message, options)
-
Prompts the user for confirmation.
Functions
- cmd(command, options \\ [], callback)
-
Executes the given
command
as a shell command and invokes thecallback
for the streamed response. - printable_app_name()
-
Returns the printable app name.
Callbacks
cmd(command)Source
@callback cmd(command :: String.t()) :: integer()
Executes the given command and returns its exit status.
Shortcut for cmd/2
with empty options.
cmd(command, options)Source
@callback cmd(command :: String.t(), options :: keyword()) :: integer()
Executes the given command and returns its exit status.
Options
:print_app
- whenfalse
, does not print the app name when the command outputs something:stderr_to_stdout
- whenfalse
, does not redirect stderr to stdout:quiet
- whentrue
, do not print the command output:env
- environment options to the executed command
error(message)Source
@callback error(message :: IO.ANSI.ansidata()) :: :ok
Prints the given ANSI error to the shell.
info(message)Source
@callback info(message :: IO.ANSI.ansidata()) :: :ok
Prints the given ANSI message to the shell.
print_app()Source
@callback print_app() :: :ok
Prints the current application to the shell if it was not printed yet.
prompt(message)Source
@callback prompt(message :: binary()) :: binary()
Prompts the user for input.
yes?(message)Source
@callback yes?(message :: binary()) :: boolean()
Prompts the user for confirmation.
Shortcut for yes?/2
with empty options.
yes?(message, options)Source
@callback yes?(message :: binary(), options :: keyword()) :: boolean()
Prompts the user for confirmation.
Options
-
:default
-:yes
or:no
(the default is:yes
)
Functions
cmd(command, options \\ [], callback)Source
Executes the given command
as a shell command and invokes the callback
for the streamed response.
This is most commonly used by shell implementations but can also be invoked directly.
Options
:cd
- (since v1.11.0) the directory to run the command in:stderr_to_stdout
- redirects stderr to stdout, defaults to true:env
- a list of environment variables, defaults to[]
:quiet
- overrides the callback to no-op
printable_app_name()Source
Returns the printable app name.
This function returns the current application name, but only if the application name should be printed.
Calling this function automatically toggles its value to false
until the current project is re-entered. The goal is to avoid printing the application name multiple times.
© 2012 Plataformatec
Licensed under the Apache License, Version 2.0.
https://hexdocs.pm/mix/1.13.4/Mix.Shell.html