mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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7f4fb34182
It is better developing vmctl tool in VictoriaMetrics repository, so it could be released together with the rest of vmutils tools such as vmalert, vmagent, vmbackup, vmrestore and vmauth.
106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
package cli
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import (
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"flag"
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"fmt"
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"strconv"
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)
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// UintFlag is a flag with type uint
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type UintFlag struct {
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Name string
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Aliases []string
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Usage string
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EnvVars []string
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FilePath string
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Required bool
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Hidden bool
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Value uint
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DefaultText string
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Destination *uint
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HasBeenSet bool
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}
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// IsSet returns whether or not the flag has been set through env or file
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func (f *UintFlag) IsSet() bool {
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return f.HasBeenSet
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}
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// String returns a readable representation of this value
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// (for usage defaults)
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func (f *UintFlag) String() string {
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return FlagStringer(f)
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}
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// Names returns the names of the flag
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func (f *UintFlag) Names() []string {
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return flagNames(f.Name, f.Aliases)
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}
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// IsRequired returns whether or not the flag is required
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func (f *UintFlag) IsRequired() bool {
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return f.Required
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}
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// TakesValue returns true of the flag takes a value, otherwise false
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func (f *UintFlag) TakesValue() bool {
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return true
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}
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// GetUsage returns the usage string for the flag
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func (f *UintFlag) GetUsage() string {
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return f.Usage
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}
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// Apply populates the flag given the flag set and environment
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func (f *UintFlag) Apply(set *flag.FlagSet) error {
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if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
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if val != "" {
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valInt, err := strconv.ParseUint(val, 0, 64)
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if err != nil {
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return fmt.Errorf("could not parse %q as uint value for flag %s: %s", val, f.Name, err)
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}
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f.Value = uint(valInt)
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f.HasBeenSet = true
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}
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}
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for _, name := range f.Names() {
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if f.Destination != nil {
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set.UintVar(f.Destination, name, f.Value, f.Usage)
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continue
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}
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set.Uint(name, f.Value, f.Usage)
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}
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return nil
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}
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// GetValue returns the flags value as string representation and an empty
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// string if the flag takes no value at all.
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func (f *UintFlag) GetValue() string {
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return fmt.Sprintf("%d", f.Value)
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}
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// Uint looks up the value of a local UintFlag, returns
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// 0 if not found
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func (c *Context) Uint(name string) uint {
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if fs := lookupFlagSet(name, c); fs != nil {
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return lookupUint(name, fs)
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}
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return 0
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}
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func lookupUint(name string, set *flag.FlagSet) uint {
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f := set.Lookup(name)
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if f != nil {
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parsed, err := strconv.ParseUint(f.Value.String(), 0, 64)
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if err != nil {
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return 0
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}
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return uint(parsed)
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}
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return 0
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}
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