142 lines
3.3 KiB
Go
142 lines
3.3 KiB
Go
package cli
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// Int64Slice is an opaque type for []int to satisfy flag.Value and flag.Getter
|
|
type Int64Slice []int64
|
|
|
|
// Set parses the value into an integer and appends it to the list of values
|
|
func (f *Int64Slice) Set(value string) error {
|
|
tmp, err := strconv.ParseInt(value, 10, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
*f = append(*f, tmp)
|
|
return nil
|
|
}
|
|
|
|
// String returns a readable representation of this value (for usage defaults)
|
|
func (f *Int64Slice) String() string {
|
|
return fmt.Sprintf("%#v", *f)
|
|
}
|
|
|
|
// Value returns the slice of ints set by this flag
|
|
func (f *Int64Slice) Value() []int64 {
|
|
return *f
|
|
}
|
|
|
|
// Get returns the slice of ints set by this flag
|
|
func (f *Int64Slice) Get() interface{} {
|
|
return *f
|
|
}
|
|
|
|
// Int64SliceFlag is a flag with type *Int64Slice
|
|
type Int64SliceFlag struct {
|
|
Name string
|
|
Usage string
|
|
EnvVar string
|
|
FilePath string
|
|
Required bool
|
|
Hidden bool
|
|
Value *Int64Slice
|
|
}
|
|
|
|
// String returns a readable representation of this value
|
|
// (for usage defaults)
|
|
func (f Int64SliceFlag) String() string {
|
|
return FlagStringer(f)
|
|
}
|
|
|
|
// GetName returns the name of the flag
|
|
func (f Int64SliceFlag) GetName() string {
|
|
return f.Name
|
|
}
|
|
|
|
// IsRequired returns whether or not the flag is required
|
|
func (f Int64SliceFlag) IsRequired() bool {
|
|
return f.Required
|
|
}
|
|
|
|
// TakesValue returns true of the flag takes a value, otherwise false
|
|
func (f Int64SliceFlag) TakesValue() bool {
|
|
return true
|
|
}
|
|
|
|
// GetUsage returns the usage string for the flag
|
|
func (f Int64SliceFlag) GetUsage() string {
|
|
return f.Usage
|
|
}
|
|
|
|
// GetValue returns the flags value as string representation and an empty
|
|
// string if the flag takes no value at all.
|
|
func (f Int64SliceFlag) GetValue() string {
|
|
if f.Value != nil {
|
|
return f.Value.String()
|
|
}
|
|
return ""
|
|
}
|
|
|
|
// Apply populates the flag given the flag set and environment
|
|
// Ignores errors
|
|
func (f Int64SliceFlag) Apply(set *flag.FlagSet) {
|
|
_ = f.ApplyWithError(set)
|
|
}
|
|
|
|
// ApplyWithError populates the flag given the flag set and environment
|
|
func (f Int64SliceFlag) ApplyWithError(set *flag.FlagSet) error {
|
|
if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
|
|
newVal := &Int64Slice{}
|
|
for _, s := range strings.Split(envVal, ",") {
|
|
s = strings.TrimSpace(s)
|
|
if err := newVal.Set(s); err != nil {
|
|
return fmt.Errorf("could not parse %s as int64 slice value for flag %s: %s", envVal, f.Name, err)
|
|
}
|
|
}
|
|
if f.Value == nil {
|
|
f.Value = newVal
|
|
} else {
|
|
*f.Value = *newVal
|
|
}
|
|
}
|
|
|
|
eachName(f.Name, func(name string) {
|
|
if f.Value == nil {
|
|
f.Value = &Int64Slice{}
|
|
}
|
|
set.Var(f.Value, name, f.Usage)
|
|
})
|
|
return nil
|
|
}
|
|
|
|
// Int64Slice looks up the value of a local Int64SliceFlag, returns
|
|
// nil if not found
|
|
func (c *Context) Int64Slice(name string) []int64 {
|
|
return lookupInt64Slice(name, c.flagSet)
|
|
}
|
|
|
|
// GlobalInt64Slice looks up the value of a global Int64SliceFlag, returns
|
|
// nil if not found
|
|
func (c *Context) GlobalInt64Slice(name string) []int64 {
|
|
if fs := lookupGlobalFlagSet(name, c); fs != nil {
|
|
return lookupInt64Slice(name, fs)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func lookupInt64Slice(name string, set *flag.FlagSet) []int64 {
|
|
f := set.Lookup(name)
|
|
if f != nil {
|
|
parsed, err := (f.Value.(*Int64Slice)).Value(), error(nil)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
return parsed
|
|
}
|
|
return nil
|
|
}
|