forked from vikunja/vikunja
143 lines
3.2 KiB
Go
143 lines
3.2 KiB
Go
package cli
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// IntSlice is an opaque type for []int to satisfy flag.Value and flag.Getter
|
|
type IntSlice []int
|
|
|
|
// Set parses the value into an integer and appends it to the list of values
|
|
func (f *IntSlice) Set(value string) error {
|
|
tmp, err := strconv.Atoi(value)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
*f = append(*f, tmp)
|
|
return nil
|
|
}
|
|
|
|
// String returns a readable representation of this value (for usage defaults)
|
|
func (f *IntSlice) String() string {
|
|
return fmt.Sprintf("%#v", *f)
|
|
}
|
|
|
|
// Value returns the slice of ints set by this flag
|
|
func (f *IntSlice) Value() []int {
|
|
return *f
|
|
}
|
|
|
|
// Get returns the slice of ints set by this flag
|
|
func (f *IntSlice) Get() interface{} {
|
|
return *f
|
|
}
|
|
|
|
// IntSliceFlag is a flag with type *IntSlice
|
|
type IntSliceFlag struct {
|
|
Name string
|
|
Usage string
|
|
EnvVar string
|
|
FilePath string
|
|
Required bool
|
|
Hidden bool
|
|
Value *IntSlice
|
|
}
|
|
|
|
// String returns a readable representation of this value
|
|
// (for usage defaults)
|
|
func (f IntSliceFlag) String() string {
|
|
return FlagStringer(f)
|
|
}
|
|
|
|
// GetName returns the name of the flag
|
|
func (f IntSliceFlag) GetName() string {
|
|
return f.Name
|
|
}
|
|
|
|
// IsRequired returns whether or not the flag is required
|
|
func (f IntSliceFlag) IsRequired() bool {
|
|
return f.Required
|
|
}
|
|
|
|
// TakesValue returns true of the flag takes a value, otherwise false
|
|
func (f IntSliceFlag) TakesValue() bool {
|
|
return true
|
|
}
|
|
|
|
// GetUsage returns the usage string for the flag
|
|
func (f IntSliceFlag) 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 IntSliceFlag) 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 IntSliceFlag) Apply(set *flag.FlagSet) {
|
|
_ = f.ApplyWithError(set)
|
|
}
|
|
|
|
// ApplyWithError populates the flag given the flag set and environment
|
|
func (f IntSliceFlag) ApplyWithError(set *flag.FlagSet) error {
|
|
if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
|
|
newVal := &IntSlice{}
|
|
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 int 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 = &IntSlice{}
|
|
}
|
|
set.Var(f.Value, name, f.Usage)
|
|
})
|
|
|
|
return nil
|
|
}
|
|
|
|
// IntSlice looks up the value of a local IntSliceFlag, returns
|
|
// nil if not found
|
|
func (c *Context) IntSlice(name string) []int {
|
|
return lookupIntSlice(name, c.flagSet)
|
|
}
|
|
|
|
// GlobalIntSlice looks up the value of a global IntSliceFlag, returns
|
|
// nil if not found
|
|
func (c *Context) GlobalIntSlice(name string) []int {
|
|
if fs := lookupGlobalFlagSet(name, c); fs != nil {
|
|
return lookupIntSlice(name, fs)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func lookupIntSlice(name string, set *flag.FlagSet) []int {
|
|
f := set.Lookup(name)
|
|
if f != nil {
|
|
parsed, err := (f.Value.(*IntSlice)).Value(), error(nil)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
return parsed
|
|
}
|
|
return nil
|
|
}
|