console

package module
v1.2.1 Latest Latest
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 Go to latest Published: Feb 20, 2025 License: AGPL-3.0 Imports: 26 Imported by: 11

README

Console

Console tries to mimick the Symfony PHP Console component as much as possible, but in Go.

Documentation

Index

Examples

Constants

View Source 
const SupportsAutocomplete = true

Variables

View Source 
var (
	NoInteractionFlag = &BoolFlag{
		Name:  "no-interaction",
		Usage: "Disable all interactions",
	}
	NoAnsiFlag = &BoolFlag{
		Name:  "no-ansi",
		Usage: "Disable ANSI output",
	}
	AnsiFlag = &BoolFlag{
		Name:  "ansi",
		Usage: "Force ANSI output",
	}
)
View Source 
var AppHelpTemplate = `` /* 687-byte string literal not displayed */

AppHelpTemplate is the text template for the Default help topic. cli.go uses text/template to render templates. You can render custom help text by setting this variable.

View Source 
var CategoryHelpTemplate = `` /* 652-byte string literal not displayed */

CategoryHelpTemplate is the text template for the category help topic. cli.go uses text/template to render templates. You can render custom help text by setting this variable.

View Source 
var CommandHelpTemplate = `` /* 393-byte string literal not displayed */

CommandHelpTemplate is the text template for the command help topic. cli.go uses text/template to render templates. You can render custom help text by setting this variable.

View Source 
var CompletionTemplates embed.FS

CompletionTemplates holds our shell completions templates.

View Source 
var HelpFlag = &BoolFlag{
	Name:    "help",
	Aliases: []string{"h"},
	Usage:   "Show help",
}

HelpFlag prints the help for all commands and subcommands. Set to nil to disable the flag.

View Source 
var HelpPrinter helpPrinter = printHelp

HelpPrinter is a function that writes the help output. If not set a default is used. The function signature is: func(w io.Writer, templ string, data interface{})

View Source 
var LogLevelFlag = VerbosityFlag("log-level", "verbose", "v")
View Source 
var OsExiter = os.Exit

OsExiter is the function used when the app exits. If not set defaults to os.Exit.

View Source 
var QuietFlag = newQuietFlag("quiet", "q")
View Source 
var VersionFlag = &BoolFlag{
	Name:  "V",
	Usage: "Print the version",
}

VersionFlag prints the version for the application

View Source 
var VersionPrinter = printVersion

VersionPrinter prints the version for the App

Functions

func AutocompleteAppAction added in v1.1.0 

func AutocompleteAppAction(c *Context) error

func CurrentBinaryInvocation added in v1.1.0 

func CurrentBinaryInvocation() (string, error)

func CurrentBinaryName 

func CurrentBinaryName() string

func CurrentBinaryPath 

func CurrentBinaryPath() (string, error)

func ExpandHome 

func ExpandHome(path string) string

func FormatErrorChain 

func FormatErrorChain(buf *bytes.Buffer, err error, trimPaths bool) bool

func GuessShell added in v1.1.4 

func GuessShell() string

func HandleError 

func HandleError(err error)

func HandleExitCoder 

func HandleExitCoder(err error)

HandleExitCoder checks if the error fulfills the ExitCoder interface, and if so prints the error to stderr (if it is non-empty) and calls OsExiter with the given exit code. If the given error is a MultiError, then this func is called on all members of the Errors slice.

func Hide 

func Hide() bool

func IsAutocomplete added in v1.1.0 

func IsAutocomplete(c *Command) bool

func IsGoRun added in v1.1.0 

func IsGoRun() bool

func IsHelp 

func IsHelp(c *Context) bool

func ShowAppHelp 

func ShowAppHelp(c *Context) error

ShowAppHelp is an action that displays the help.

func ShowAppHelpAction 

func ShowAppHelpAction(c *Context) error

ShowAppHelpAction is an action that displays the global help or for the specified command.

func ShowCommandHelp 

func ShowCommandHelp(ctx *Context, command string) error

ShowCommandHelp prints help for the given command

func ShowVersion 

func ShowVersion(c *Context)

ShowVersion prints the version number of the App

func VerbosityFlag 

func VerbosityFlag(name, alias, shortAlias string) *verbosityFlag

func WrapPanic 

func WrapPanic(msg interface{}) error

Types

type ActionFunc 

type ActionFunc func(*Context) error

ActionFunc is the action to execute when no subcommands are specified

type AfterFunc 

type AfterFunc func(*Context) error

AfterFunc is an action to execute after any subcommands are run, but after the subcommand has finished it is run even if Action() panics

type Alias 

type Alias struct {
	Name   string
	Hidden bool
}

func (*Alias) String 

func (a *Alias) String() string

type Application 

type Application struct {
	// The name of the program. Defaults to filepath.Base(os.Executable())
	Name string
	// Full name of command for help, defaults to Name
	HelpName string
	// Description of the program.
	Usage string
	// Version of the program
	Version string
	// Channel of the program (dev, beta, stable, ...)
	Channel string
	// Description of the program
	Description string
	// List of commands to execute
	Commands []*Command
	// List of flags to parse
	Flags []Flag
	// Prefix used to automatically find flag in environment
	FlagEnvPrefix []string
	// Categories contains the categorized commands and is populated on app startup
	Categories CommandCategories
	// An action to execute before any subcommands are run, but after the context is ready
	// If a non-nil error is returned, no subcommands are run
	Before BeforeFunc
	// An action to execute after any subcommands are run, but after the subcommand has finished
	// It is run even if Action() panics
	After AfterFunc
	// The action to execute when no subcommands are specified
	Action ActionFunc
	// Build date
	BuildDate string
	// Copyright of the binary if any
	Copyright string
	// Writer writer to write output to
	Writer io.Writer
	// ErrWriter writes error output
	ErrWriter io.Writer
	// contains filtered or unexported fields
}

Application is the main structure of a cli application.

func (*Application) BestCommand added in v1.0.3 

func (a *Application) BestCommand(name string) *Command

BestCommand returns the named command on App or a command fuzzy matching if there is only one. Returns nil if the command does not exist of if the fuzzy matching find more than one.

func (*Application) Category 

func (a *Application) Category(name string) *CommandCategory

Category returns the named CommandCategory on App. Returns nil if the category does not exist

func (*Application) Command 

func (a *Application) Command(name string) *Command

Command returns the named command on App. Returns nil if the command does not exist

func (*Application) Run 

func (a *Application) Run(arguments []string) (err error)

Run is the entry point to the cli app. Parses the arguments slice and routes to the proper flag/args combination

Example 
// set args for examples sake
os.Args = []string{"greet", "--name", "Jeremy"}

app := &Application{
	Writer:    os.Stdout,
	ErrWriter: os.Stderr,
	Name:      "greet",
	Flags: []Flag{
		&StringFlag{Name: "name", DefaultValue: "bob", Usage: "a name to say"},
	},
	Action: func(c *Context) error {
		fmt.Printf("Hello %v\n", c.String("name"))
		return nil
	},
}

app.Run(os.Args)

Output:

Hello Jeremy
Example (CommandHelp) 
// set args for examples sake
os.Args = []string{"greet", "help", "describeit"}

app := &Application{
	Writer:    os.Stdout,
	ErrWriter: os.Stderr,
	Name:      "greet",
	HelpName:  "greet",
	Flags: []Flag{
		&StringFlag{Name: "name", DefaultValue: "bob", Usage: "a name to say"},
	},
	Commands: []*Command{
		{
			Name:        "describeit",
			Aliases:     []*Alias{{Name: "d"}},
			Usage:       "use it to see a description",
			Description: "This is how we describe describeit the function",
			Action: func(c *Context) error {
				fmt.Printf("i like to describe things")
				return nil
			},
		},
	},
}
app.Run(os.Args)

Output:

<comment>Description:</>
  use it to see a description

<comment>Usage:</>
  greet describeit

<comment>Help:</>

  This is how we describe describeit the function
Example (Quiet) 
// set args for examples sake
os.Args = []string{"greet", "-q", "--name", "Jeremy"}

app := &Application{
	Writer:    os.Stdout,
	ErrWriter: os.Stdout,
	Name:      "greet",
	Flags: []Flag{
		&StringFlag{Name: "name", DefaultValue: "bob", Usage: "a name to say"},
	},
	Action: func(c *Context) error {
		fmt.Fprintf(c.App.Writer, "Hello %v\n", c.String("name"))
		fmt.Fprintf(c.App.ErrWriter, "Byebye %v\n", c.String("name"))
		return nil
	},
}

app.Run(os.Args)

Output:
Example (QuietDisabled) 
terminal.DefaultStdout = terminal.NewBufferedConsoleOutput(os.Stdout, os.Stdout)
// set args for examples sake
os.Args = []string{"greet", "--quiet=false", "--name", "Jeremy"}

app := &Application{
	Writer:    os.Stdout,
	ErrWriter: os.Stdout,
	Name:      "greet",
	Flags: []Flag{
		&StringFlag{Name: "name", DefaultValue: "bob", Usage: "a name to say"},
	},
	Action: func(c *Context) error {
		fmt.Fprintf(c.App.Writer, "Hello %v\n", c.String("name"))
		fmt.Fprintf(c.App.ErrWriter, "Byebye %v\n", c.String("name"))
		return nil
	},
}

app.Run(os.Args)

Output:

Hello Jeremy
Byebye Jeremy

func (*Application) VisibleCategories 

func (a *Application) VisibleCategories() []CommandCategory

VisibleCategories returns a slice of categories and commands that are Hidden=false

func (*Application) VisibleCommands 

func (a *Application) VisibleCommands() []*Command

VisibleCommands returns a slice of the Commands with Hidden=false

func (*Application) VisibleFlags 

func (a *Application) VisibleFlags() []Flag

VisibleFlags returns a slice of the Flags with Hidden=false

type Arg 

type Arg struct {
	Name, Default string
	Description   string
	Optional      bool
	Slice         bool
}

func (*Arg) String 

func (a *Arg) String() string

type ArgDefinition 

type ArgDefinition []*Arg

func (ArgDefinition) Usage 

func (def ArgDefinition) Usage() string

type Args 

type Args interface {
	// Get returns the named argument, or else a blank string
	Get(name string) string

	// Tail returns the rest of the arguments (the last "array" one)
	// or else an empty string slice
	Tail() []string
	// Len returns the length of the wrapped slice
	Len() int
	// Present checks if there are any arguments present
	Present() bool
	// Slice returns a copy of the internal slice
	Slice() []string
	// contains filtered or unexported methods
}

type BeforeFunc 

type BeforeFunc func(*Context) error

BeforeFunc is an action to execute before any subcommands are run, but after the context is ready if a non-nil error is returned, no subcommands are run

type BoolFlag 

type BoolFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultValue  bool
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, bool) error
	Destination   *bool
}

BoolFlag is a flag with type bool

func (*BoolFlag) Apply 

func (f *BoolFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*BoolFlag) Names 

func (f *BoolFlag) Names() []string

Names returns the names of the flag

func (*BoolFlag) PredictArgs added in v1.1.0 

func (f *BoolFlag) PredictArgs(c *Context, a complete.Args) []string

func (*BoolFlag) String 

func (f *BoolFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*BoolFlag) Validate 

func (f *BoolFlag) Validate(c *Context) error

type Command 

type Command struct {
	// The name of the command
	Name string
	// A list of aliases for the command
	Aliases []*Alias
	// A short description of the usage of this command
	Usage string
	// A longer explanation of how the command works
	Description string
	// or a function responsible to render the description
	DescriptionFunc DescriptionFunc
	// The category the command is part of
	Category string
	// The function to call when checking for shell command completions
	ShellComplete ShellCompleteFunc
	// An action to execute before any sub-subcommands are run, but after the context is ready
	// If a non-nil error is returned, no sub-subcommands are run
	Before BeforeFunc
	// An action to execute after any subcommands are run, but after the subcommand has finished
	// It is run even if Action() panics
	After AfterFunc
	// The function to call when this command is invoked
	Action ActionFunc
	// List of flags to parse
	Flags []Flag
	// List of args to parse
	Args ArgDefinition
	// Treat all flags as normal arguments if true
	FlagParsing FlagParsingMode
	// Boolean to hide this command from help
	Hidden func() bool
	// Full name of command for help, defaults to full command name, including parent commands.
	HelpName string
	// The name used on the CLI by the user
	UserName string
}

Command is a subcommand for a console.App.

func (*Command) Arguments 

func (c *Command) Arguments() ArgDefinition

Arguments returns a slice of the Arguments

func (*Command) FullName 

func (c *Command) FullName() string

FullName returns the full name of the command. For subcommands this ensures that parent commands are part of the command path

func (*Command) HasName 

func (c *Command) HasName(name string, exact bool) bool

HasName returns true if Command.Name matches given name

func (*Command) Names 

func (c *Command) Names() []string

Names returns the names including short names and aliases.

func (*Command) PredictArgs added in v1.1.0 

func (c *Command) PredictArgs(ctx *Context, a complete.Args) []string

func (*Command) PreferredName 

func (c *Command) PreferredName() string

func (*Command) Run 

func (c *Command) Run(ctx *Context) (err error)

Run invokes the command given the context, parses ctx.Args() to generate command-specific flags

func (*Command) VisibleFlags 

func (c *Command) VisibleFlags() []Flag

VisibleFlags returns a slice of the Flags with Hidden=false

type CommandCategories 

type CommandCategories interface {
	// AddCommand adds a command to a category, creating a new category if necessary.
	AddCommand(category string, command *Command)
	// Categories returns a copy of the category slice
	Categories() []CommandCategory
}

type CommandCategory 

type CommandCategory interface {
	// Name returns the category name string
	Name() string
	// VisibleCommands returns a slice of the Commands with Hidden=false
	VisibleCommands() []*Command
}

CommandCategory is a category containing commands.

type CommandNotFoundError 

type CommandNotFoundError struct {
	// contains filtered or unexported fields
}

func (*CommandNotFoundError) Error 

func (e *CommandNotFoundError) Error() string

func (*CommandNotFoundError) ExitCode 

func (e *CommandNotFoundError) ExitCode() int

func (*CommandNotFoundError) GetSeverity 

func (e *CommandNotFoundError) GetSeverity() zerolog.Level

type CommandNotFoundFunc 

type CommandNotFoundFunc func(*Context, string) error

CommandNotFoundFunc is executed if the proper command cannot be found

type Context 

type Context struct {
	App     *Application
	Command *Command
	// contains filtered or unexported fields
}

Context is a type that is passed through to each Handler action in a cli application. Context can be used to retrieve context-specific args and parsed command-line options.

func NewContext 

func NewContext(app *Application, set *flag.FlagSet, parentCtx *Context) *Context

NewContext creates a new context. For use in when invoking an App or Command action.

func (*Context) Args 

func (c *Context) Args() Args

func (*Context) Bool 

func (c *Context) Bool(name string) bool

Bool looks up the value of a local BoolFlag, returns false if not found

func (*Context) CurrentBinaryInvocation added in v1.1.0 

func (c *Context) CurrentBinaryInvocation() string

func (*Context) CurrentBinaryPath added in v1.1.0 

func (c *Context) CurrentBinaryPath() string

func (*Context) Duration 

func (c *Context) Duration(name string) time.Duration

Duration looks up the value of a local DurationFlag, returns 0 if not found

func (*Context) Float64 

func (c *Context) Float64(name string) float64

Float64 looks up the value of a local Float64Flag, returns 0 if not found

func (*Context) Float64Slice 

func (c *Context) Float64Slice(name string) []float64

Float64Slice looks up the value of a local Float64SliceFlag, returns nil if not found

func (*Context) Generic 

func (c *Context) Generic(name string) interface{}

Generic looks up the value of a local GenericFlag, returns nil if not found

func (*Context) HasFlag 

func (c *Context) HasFlag(name string) bool

HasFlag determines if a flag is defined in this context and all of its parent contexts.

func (*Context) Int 

func (c *Context) Int(name string) int

Int looks up the value of a local IntFlag, returns 0 if not found

func (*Context) Int64 

func (c *Context) Int64(name string) int64

Int64 looks up the value of a local Int64Flag, returns 0 if not found

func (*Context) Int64Slice 

func (c *Context) Int64Slice(name string) []int64

Int64Slice looks up the value of a local Int64SliceFlag, returns nil if not found

func (*Context) IntSlice 

func (c *Context) IntSlice(name string) []int

IntSlice looks up the value of a local IntSliceFlag, returns nil if not found

func (*Context) IsSet 

func (c *Context) IsSet(name string) bool

IsSet determines if the flag was actually set

func (*Context) Lineage 

func (c *Context) Lineage() []*Context

Lineage returns *this* context and all of its ancestor contexts in order from child to parent

func (*Context) NArg 

func (c *Context) NArg() int

NArg returns the number of the command line arguments.

func (*Context) Set 

func (c *Context) Set(name, value string) error

Set assigns a value to a context flag.

func (*Context) String 

func (c *Context) String(name string) string

String looks up the value of a local StringFlag, returns "" if not found

func (*Context) StringMap 

func (c *Context) StringMap(name string) map[string]string

StringMap looks up the value of a local StringMapFlag, returns nil if not found

func (*Context) StringSlice 

func (c *Context) StringSlice(name string) []string

StringSlice looks up the value of a local StringSliceFlag, returns nil if not found

func (*Context) Uint 

func (c *Context) Uint(name string) uint

Uint looks up the value of a local UintFlag, returns 0 if not found

func (*Context) Uint64 

func (c *Context) Uint64(name string) uint64

Uint64 looks up the value of a local Uint64Flag, returns 0 if not found

type ContextPredictor added in v1.1.0 

type ContextPredictor struct {
	// contains filtered or unexported fields
}

ContextPredictor determines what terms can follow a command or a flag It is used for autocompletion, given the last word in the already completed command line, what words can complete it.

func (ContextPredictor) Predict added in v1.1.0 

func (p ContextPredictor) Predict(a complete.Args) []string

Predict invokes the predict function and implements the Predictor interface

type DescriptionFunc added in v1.1.0 

type DescriptionFunc func(*Command, *Application) string

DescriptionFunc is used by the help generation to display a description when its computation is intensive or needs runtime information

type DurationFlag 

type DurationFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultValue  time.Duration
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, time.Duration) error
	Destination   *time.Duration
}

DurationFlag is a flag with type time.Duration (see https://golang.org/pkg/time/#ParseDuration)

func (*DurationFlag) Apply 

func (f *DurationFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*DurationFlag) Names 

func (f *DurationFlag) Names() []string

Names returns the names of the flag

func (*DurationFlag) PredictArgs added in v1.1.0 

func (f *DurationFlag) PredictArgs(c *Context, a complete.Args) []string

func (*DurationFlag) String 

func (f *DurationFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*DurationFlag) Validate 

func (f *DurationFlag) Validate(c *Context) error

type ExitCoder 

type ExitCoder interface {
	error
	ExitCode() int
}

ExitCoder is the interface checked by `App` and `Command` for a custom exit code

func Exit 

func Exit(message string, exitCode int) ExitCoder

Exit wraps a message and exit code into an ExitCoder suitable for handling by HandleExitCoder

type Flag 

type Flag interface {
	fmt.Stringer

	PredictArgs(*Context, complete.Args) []string
	Validate(*Context) error
	// Apply Flag settings to the given flag set
	Apply(*flag.FlagSet)
	Names() []string
}

Flag is a common interface related to parsing flags in cli. For more advanced flag parsing techniques, it is recommended that this interface be implemented.

type FlagParsingMode 

type FlagParsingMode int

FlagParsingMode defines how arguments and flags parsing is done. Three different values: FlagParsingNormal, FlagParsingSkipped and FlagParsingSkippedAfterFirstArg. 

const (
	// FlagParsingNormal sets parsing to a normal mode, complete parsing of all
	// flags found after command name
	FlagParsingNormal FlagParsingMode = iota
	// FlagParsingSkipped sets parsing to a mode where parsing stops just after
	// the command name.
	FlagParsingSkipped
	// FlagParsingSkippedAfterFirstArg sets parsing to a hybrid mode where parsing continues
	// after the command name until an argument is found.
	// This for example allows usage like `blackfire -v=4 run --samples=2 php foo.php`
	FlagParsingSkippedAfterFirstArg
)

func (FlagParsingMode) IsPostfix 

func (mode FlagParsingMode) IsPostfix() bool

func (FlagParsingMode) IsPrefix 

func (mode FlagParsingMode) IsPrefix() bool

type FlagStringFunc 

type FlagStringFunc func(Flag) string

FlagStringFunc is used by the help generation to display a flag, which is expected to be a single line. 

var FlagStringer FlagStringFunc = stringifyFlag

FlagStringer converts a flag definition to a string. This is used by help to display a flag.

type FlagsByName 

type FlagsByName []Flag

FlagsByName is a slice of Flag.

func (FlagsByName) Len 

func (f FlagsByName) Len() int

func (FlagsByName) Less 

func (f FlagsByName) Less(i, j int) bool

func (FlagsByName) Swap 

func (f FlagsByName) Swap(i, j int)

type Float64Flag 

type Float64Flag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultValue  float64
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, float64) error
	Destination   *float64
}

Float64Flag is a flag with type float64

func (*Float64Flag) Apply 

func (f *Float64Flag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*Float64Flag) Names 

func (f *Float64Flag) Names() []string

Names returns the names of the flag

func (*Float64Flag) PredictArgs added in v1.1.0 

func (f *Float64Flag) PredictArgs(c *Context, a complete.Args) []string

func (*Float64Flag) String 

func (f *Float64Flag) String() string

String returns a readable representation of this value (for usage defaults)

func (*Float64Flag) Validate 

func (f *Float64Flag) Validate(c *Context) error

type Float64Slice 

type Float64Slice struct {
	// contains filtered or unexported fields
}

Float64Slice is an opaque type for []float64 to satisfy flag.Value

func NewFloat64Slice 

func NewFloat64Slice(defaults ...float64) *Float64Slice

NewFloat64Slice makes a *Float64Slice with default values

func (*Float64Slice) Serialized 

func (f *Float64Slice) Serialized() string

Serialized allows Float64Slice to fulfill Serializeder

func (*Float64Slice) Set 

func (f *Float64Slice) Set(value string) error

Set parses the value into a float64 and appends it to the list of values

func (*Float64Slice) String 

func (f *Float64Slice) String() string

String returns a readable representation of this value (for usage defaults)

func (*Float64Slice) Value 

func (f *Float64Slice) Value() []float64

Value returns the slice of float64s set by this flag

type Float64SliceFlag 

type Float64SliceFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, []float64) error
	Destination   *Float64Slice
}

Float64SliceFlag is a flag with type *Float64Slice

func (*Float64SliceFlag) Apply 

func (f *Float64SliceFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*Float64SliceFlag) Names 

func (f *Float64SliceFlag) Names() []string

Names returns the names of the flag

func (*Float64SliceFlag) PredictArgs added in v1.1.0 

func (f *Float64SliceFlag) PredictArgs(c *Context, a complete.Args) []string

func (*Float64SliceFlag) String 

func (f *Float64SliceFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*Float64SliceFlag) Validate 

func (f *Float64SliceFlag) Validate(c *Context) error

type Generic 

type Generic interface {
	Set(value string) error
	String() string
}

Generic is a generic parseable type identified by a specific flag

type GenericFlag 

type GenericFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, interface{}) error
	Destination   Generic
}

GenericFlag is a flag with type Generic

func (*GenericFlag) Apply 

func (f *GenericFlag) Apply(set *flag.FlagSet)

Apply takes the flagset and calls Set on the generic flag with the value provided by the user for parsing by the flag

func (*GenericFlag) Names 

func (f *GenericFlag) Names() []string

Names returns the names of the flag

func (*GenericFlag) PredictArgs added in v1.1.0 

func (f *GenericFlag) PredictArgs(c *Context, a complete.Args) []string

func (*GenericFlag) String 

func (f *GenericFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*GenericFlag) Validate 

func (f *GenericFlag) Validate(c *Context) error

type IncorrectUsageError 

type IncorrectUsageError struct {
	ParentError error
}

func (IncorrectUsageError) Cause 

func (e IncorrectUsageError) Cause() error

func (IncorrectUsageError) Error 

func (e IncorrectUsageError) Error() string

type Int64Flag 

type Int64Flag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultValue  int64
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, int64) error
	Destination   *int64
}

Int64Flag is a flag with type int64

func (*Int64Flag) Apply 

func (f *Int64Flag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*Int64Flag) Names 

func (f *Int64Flag) Names() []string

Names returns the names of the flag

func (*Int64Flag) PredictArgs added in v1.1.0 

func (f *Int64Flag) PredictArgs(c *Context, a complete.Args) []string

func (*Int64Flag) String 

func (f *Int64Flag) String() string

String returns a readable representation of this value (for usage defaults)

func (*Int64Flag) Validate 

func (f *Int64Flag) Validate(c *Context) error

type Int64Slice 

type Int64Slice struct {
	// contains filtered or unexported fields
}

Int64Slice is an opaque type for []int to satisfy flag.Value

func NewInt64Slice 

func NewInt64Slice(defaults ...int64) *Int64Slice

NewInt64Slice makes an *Int64Slice with default values

func (*Int64Slice) Serialized 

func (f *Int64Slice) Serialized() string

Serialized allows Int64Slice to fulfill Serializeder

func (*Int64Slice) Set 

func (f *Int64Slice) Set(value string) error

Set parses the value into an integer and appends it to the list of values

func (*Int64Slice) String 

func (f *Int64Slice) String() string

String returns a readable representation of this value (for usage defaults)

func (*Int64Slice) Value 

func (f *Int64Slice) Value() []int64

Value returns the slice of ints set by this flag

type Int64SliceFlag 

type Int64SliceFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, []int64) error
	Destination   *Int64Slice
}

Int64SliceFlag is a flag with type *Int64Slice

func (*Int64SliceFlag) Apply 

func (f *Int64SliceFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*Int64SliceFlag) Names 

func (f *Int64SliceFlag) Names() []string

Names returns the names of the flag

func (*Int64SliceFlag) PredictArgs added in v1.1.0 

func (f *Int64SliceFlag) PredictArgs(c *Context, a complete.Args) []string

func (*Int64SliceFlag) String 

func (f *Int64SliceFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*Int64SliceFlag) Validate 

func (f *Int64SliceFlag) Validate(c *Context) error

type IntFlag 

type IntFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultValue  int
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, int) error
	Destination   *int
}

IntFlag is a flag with type int

func (*IntFlag) Apply 

func (f *IntFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*IntFlag) Names 

func (f *IntFlag) Names() []string

Names returns the names of the flag

func (*IntFlag) PredictArgs added in v1.1.0 

func (f *IntFlag) PredictArgs(c *Context, a complete.Args) []string

func (*IntFlag) String 

func (f *IntFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*IntFlag) Validate 

func (f *IntFlag) Validate(c *Context) error

type IntSlice 

type IntSlice struct {
	// contains filtered or unexported fields
}

IntSlice wraps an []int to satisfy flag.Value

func NewIntSlice 

func NewIntSlice(defaults ...int) *IntSlice

NewIntSlice makes an *IntSlice with default values

func (*IntSlice) Serialized 

func (i *IntSlice) Serialized() string

Serialized allows IntSlice to fulfill Serializeder

func (*IntSlice) Set 

func (i *IntSlice) Set(value string) error

Set parses the value into an integer and appends it to the list of values

func (*IntSlice) SetInt 

func (i *IntSlice) SetInt(value int)

SetInt directly adds an integer to the list of values

func (*IntSlice) String 

func (i *IntSlice) String() string

String returns a readable representation of this value (for usage defaults)

func (*IntSlice) Value 

func (i *IntSlice) Value() []int

Value returns the slice of ints set by this flag

type IntSliceFlag 

type IntSliceFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, []int) error
	Destination   *IntSlice
}

IntSliceFlag is a flag with type *IntSlice

func (*IntSliceFlag) Apply 

func (f *IntSliceFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*IntSliceFlag) Names 

func (f *IntSliceFlag) Names() []string

Names returns the names of the flag

func (*IntSliceFlag) PredictArgs added in v1.1.0 

func (f *IntSliceFlag) PredictArgs(c *Context, a complete.Args) []string

func (*IntSliceFlag) String 

func (f *IntSliceFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*IntSliceFlag) Validate 

func (f *IntSliceFlag) Validate(c *Context) error

type MultiError 

type MultiError interface {
	error
	// Errors returns a copy of the errors slice
	Errors() []error
}

MultiError is an error that wraps multiple errors.

type Predictor added in v1.1.0 

type Predictor interface {
	PredictArgs(*Context, complete.Args) []string
}

type Serializeder 

type Serializeder interface {
	Serialized() string
}

Serializeder is used to circumvent the limitations of flag.FlagSet.Set

type ShellCompleteFunc added in v1.1.0 

type ShellCompleteFunc func(*Context, complete.Args) []string

ShellCompleteFunc is an action to execute when the shell completion flag is set

type StringFlag 

type StringFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultValue  string
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, string) error
	Destination   *string
}

StringFlag is a flag with type string

func (*StringFlag) Apply 

func (f *StringFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*StringFlag) Names 

func (f *StringFlag) Names() []string

Names returns the names of the flag

func (*StringFlag) PredictArgs added in v1.1.0 

func (f *StringFlag) PredictArgs(c *Context, a complete.Args) []string

func (*StringFlag) String 

func (f *StringFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*StringFlag) Validate 

func (f *StringFlag) Validate(c *Context) error

type StringMap 

type StringMap struct {
	// contains filtered or unexported fields
}

StringMap wraps a map[string]string to satisfy flag.Value

func NewStringMap 

func NewStringMap(m map[string]string) *StringMap

NewStringMap creates a *StringMap with default values

func (*StringMap) Serialized 

func (m *StringMap) Serialized() string

Serialized allows StringSlice to fulfill Serializeder

func (*StringMap) Set 

func (m *StringMap) Set(value string) error

Set appends the string value to the list of values

func (*StringMap) String 

func (m *StringMap) String() string

String returns a readable representation of this value (for usage defaults)

func (*StringMap) Value 

func (m *StringMap) Value() map[string]string

Value returns the map set by this flag

type StringMapFlag 

type StringMapFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, map[string]string) error
	Destination   *StringMap
}

StringMapFlag is a flag with type *StringMap

func (*StringMapFlag) Apply 

func (f *StringMapFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*StringMapFlag) Names 

func (f *StringMapFlag) Names() []string

Names returns the names of the flag

func (*StringMapFlag) PredictArgs added in v1.1.0 

func (f *StringMapFlag) PredictArgs(c *Context, a complete.Args) []string

func (*StringMapFlag) String 

func (f *StringMapFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*StringMapFlag) Validate 

func (f *StringMapFlag) Validate(c *Context) error

type StringSlice 

type StringSlice struct {
	// contains filtered or unexported fields
}

StringSlice wraps a []string to satisfy flag.Value

func NewStringSlice 

func NewStringSlice(defaults ...string) *StringSlice

NewStringSlice creates a *StringSlice with default values

func (*StringSlice) Serialized 

func (f *StringSlice) Serialized() string

Serialized allows StringSlice to fulfill Serializeder

func (*StringSlice) Set 

func (f *StringSlice) Set(value string) error

Set appends the string value to the list of values

func (*StringSlice) String 

func (f *StringSlice) String() string

String returns a readable representation of this value (for usage defaults)

func (*StringSlice) Value 

func (f *StringSlice) Value() []string

Value returns the slice of strings set by this flag

type StringSliceFlag 

type StringSliceFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, []string) error
	Destination   *StringSlice
}

StringSliceFlag is a flag with type *StringSlice

func (*StringSliceFlag) Apply 

func (f *StringSliceFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*StringSliceFlag) Names 

func (f *StringSliceFlag) Names() []string

Names returns the names of the flag

func (*StringSliceFlag) PredictArgs added in v1.1.0 

func (f *StringSliceFlag) PredictArgs(c *Context, a complete.Args) []string

func (*StringSliceFlag) String 

func (f *StringSliceFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*StringSliceFlag) Validate 

func (f *StringSliceFlag) Validate(c *Context) error

type Uint64Flag 

type Uint64Flag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultValue  uint64
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, uint64) error
	Destination   *uint64
}

Uint64Flag is a flag with type uint64

func (*Uint64Flag) Apply 

func (f *Uint64Flag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*Uint64Flag) Names 

func (f *Uint64Flag) Names() []string

Names returns the names of the flag

func (*Uint64Flag) PredictArgs added in v1.1.0 

func (f *Uint64Flag) PredictArgs(c *Context, a complete.Args) []string

func (*Uint64Flag) String 

func (f *Uint64Flag) String() string

String returns a readable representation of this value (for usage defaults)

func (*Uint64Flag) Validate 

func (f *Uint64Flag) Validate(c *Context) error

type UintFlag 

type UintFlag struct {
	Name          string
	Aliases       []string
	Usage         string
	EnvVars       []string
	Hidden        bool
	DefaultValue  uint
	DefaultText   string
	Required      bool
	ArgsPredictor func(*Context, complete.Args) []string
	Validator     func(*Context, uint) error
	Destination   *uint
}

UintFlag is a flag with type uint

func (*UintFlag) Apply 

func (f *UintFlag) Apply(set *flag.FlagSet)

Apply populates the flag given the flag set and environment

func (*UintFlag) Names 

func (f *UintFlag) Names() []string

Names returns the names of the flag

func (*UintFlag) PredictArgs added in v1.1.0 

func (f *UintFlag) PredictArgs(c *Context, a complete.Args) []string

func (*UintFlag) String 

func (f *UintFlag) String() string

String returns a readable representation of this value (for usage defaults)

func (*UintFlag) Validate 

func (f *UintFlag) Validate(c *Context) error

type WrappedPanic 

type WrappedPanic struct {
	// contains filtered or unexported fields
}

func (WrappedPanic) Cause 

func (p WrappedPanic) Cause() error

func (WrappedPanic) Error 

func (p WrappedPanic) Error() string

func (WrappedPanic) StackTrace 

func (p WrappedPanic) StackTrace() errors.StackTrace

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