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Generate code for flag types and context accessors

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This commit is contained in:
Dan Buch
2016-06-23 00:56:44 -04:00
parent 4205e9c4ee
commit 6185b8d8fd
9 changed files with 682 additions and 450 deletions
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261
flag.go
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@@ -70,22 +70,6 @@ type Generic interface {
String() string
}
// GenericFlag is the flag type for types implementing Generic
type GenericFlag struct {
Name string
Value Generic
Usage string
EnvVar string
Hidden bool
}
// String returns the string representation of the generic flag to display the
// help text to the user (uses the String() method of the generic flag to show
// the value)
func (f GenericFlag) String() string {
return FlagStringer(f)
}
// Apply takes the flagset and calls Set on the generic flag with the value
// provided by the user for parsing by the flag
func (f GenericFlag) Apply(set *flag.FlagSet) {
@@ -105,11 +89,6 @@ func (f GenericFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of a flag.
func (f GenericFlag) GetName() string {
return f.Name
}
// StringSlice is an opaque type for []string to satisfy flag.Value
type StringSlice []string
@@ -129,21 +108,6 @@ func (f *StringSlice) Value() []string {
return *f
}
// StringSliceFlag is a string flag that can be specified multiple times on the
// command-line
type StringSliceFlag struct {
Name string
Value *StringSlice
Usage string
EnvVar string
Hidden bool
}
// String returns the usage
func (f StringSliceFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f StringSliceFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -169,11 +133,6 @@ func (f StringSliceFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of a flag.
func (f StringSliceFlag) GetName() string {
return f.Name
}
// IntSlice is an opaque type for []int to satisfy flag.Value
type IntSlice []int
@@ -197,21 +156,6 @@ func (f *IntSlice) Value() []int {
return *f
}
// IntSliceFlag is an int flag that can be specified multiple times on the
// command-line
type IntSliceFlag struct {
Name string
Value *IntSlice
Usage string
EnvVar string
Hidden bool
}
// String returns the usage
func (f IntSliceFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f IntSliceFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -240,11 +184,6 @@ func (f IntSliceFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f IntSliceFlag) GetName() string {
return f.Name
}
// Int64Slice is an opaque type for []int to satisfy flag.Value
type Int64Slice []int64
@@ -268,21 +207,6 @@ func (f *Int64Slice) Value() []int64 {
return *f
}
// Int64SliceFlag is an int flag that can be specified multiple times on the
// command-line
type Int64SliceFlag struct {
Name string
Value *Int64Slice
Usage string
EnvVar string
Hidden bool
}
// String returns the usage
func (f Int64SliceFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f Int64SliceFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -311,25 +235,6 @@ func (f Int64SliceFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f Int64SliceFlag) GetName() string {
return f.Name
}
// BoolFlag is a switch that defaults to false
type BoolFlag struct {
Name string
Usage string
EnvVar string
Destination *bool
Hidden bool
}
// String returns a readable representation of this value (for usage defaults)
func (f BoolFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f BoolFlag) Apply(set *flag.FlagSet) {
val := false
@@ -355,26 +260,6 @@ func (f BoolFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f BoolFlag) GetName() string {
return f.Name
}
// BoolTFlag this represents a boolean flag that is true by default, but can
// still be set to false by --some-flag=false
type BoolTFlag struct {
Name string
Usage string
EnvVar string
Destination *bool
Hidden bool
}
// String returns a readable representation of this value (for usage defaults)
func (f BoolTFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f BoolTFlag) Apply(set *flag.FlagSet) {
val := true
@@ -400,26 +285,6 @@ func (f BoolTFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f BoolTFlag) GetName() string {
return f.Name
}
// StringFlag represents a flag that takes as string value
type StringFlag struct {
Name string
Value string
Usage string
EnvVar string
Destination *string
Hidden bool
}
// String returns the usage
func (f StringFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f StringFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -441,26 +306,6 @@ func (f StringFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f StringFlag) GetName() string {
return f.Name
}
// IntFlag is a flag that takes an integer
type IntFlag struct {
Name string
Value int
Usage string
EnvVar string
Destination *int
Hidden bool
}
// String returns the usage
func (f IntFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f IntFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -485,26 +330,6 @@ func (f IntFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f IntFlag) GetName() string {
return f.Name
}
// Int64Flag is a flag that takes a 64-bit integer
type Int64Flag struct {
Name string
Value int64
Usage string
EnvVar string
Destination *int64
Hidden bool
}
// String returns the usage
func (f Int64Flag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f Int64Flag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -529,26 +354,6 @@ func (f Int64Flag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f Int64Flag) GetName() string {
return f.Name
}
// UintFlag is a flag that takes an unsigned integer
type UintFlag struct {
Name string
Value uint
Usage string
EnvVar string
Destination *uint
Hidden bool
}
// String returns the usage
func (f UintFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f UintFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -573,26 +378,6 @@ func (f UintFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f UintFlag) GetName() string {
return f.Name
}
// Uint64Flag is a flag that takes an unsigned 64-bit integer
type Uint64Flag struct {
Name string
Value uint64
Usage string
EnvVar string
Destination *uint64
Hidden bool
}
// String returns the usage
func (f Uint64Flag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f Uint64Flag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -617,27 +402,6 @@ func (f Uint64Flag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f Uint64Flag) GetName() string {
return f.Name
}
// DurationFlag is a flag that takes a duration specified in Go's duration
// format: https://golang.org/pkg/time/#ParseDuration
type DurationFlag struct {
Name string
Value time.Duration
Usage string
EnvVar string
Destination *time.Duration
Hidden bool
}
// String returns a readable representation of this value (for usage defaults)
func (f DurationFlag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f DurationFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -662,26 +426,6 @@ func (f DurationFlag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f DurationFlag) GetName() string {
return f.Name
}
// Float64Flag is a flag that takes an float value
type Float64Flag struct {
Name string
Value float64
Usage string
EnvVar string
Destination *float64
Hidden bool
}
// String returns the usage
func (f Float64Flag) String() string {
return FlagStringer(f)
}
// Apply populates the flag given the flag set and environment
func (f Float64Flag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
@@ -705,11 +449,6 @@ func (f Float64Flag) Apply(set *flag.FlagSet) {
})
}
// GetName returns the name of the flag.
func (f Float64Flag) GetName() string {
return f.Name
}
func visibleFlags(fl []Flag) []Flag {
visible := []Flag{}
for _, flag := range fl {