87 lines
1.8 KiB
Go
87 lines
1.8 KiB
Go
package arguments
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import (
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"flag"
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"fmt"
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)
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// flagStringSlice is a flag.Value implementation which allows collecting
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// multiple instances of a single flag into a slice. This is used for flags
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// such as -target=aws_instance.foo and -var x=y.
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type flagStringSlice []string
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var _ flag.Value = (*flagStringSlice)(nil)
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func (v *flagStringSlice) String() string {
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return ""
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}
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func (v *flagStringSlice) Set(raw string) error {
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*v = append(*v, raw)
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return nil
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}
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// flagNameValueSlice is a flag.Value implementation that appends raw flag
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// names and values to a slice. This is used to collect a sequence of flags
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// with possibly different names, preserving the overall order.
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//
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// FIXME: this is a copy of rawFlags from command/meta_config.go, with the
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// eventual aim of replacing it altogether by gathering variables in the
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// arguments package.
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type flagNameValueSlice struct {
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flagName string
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items *[]FlagNameValue
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}
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var _ flag.Value = flagNameValueSlice{}
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func newFlagNameValueSlice(flagName string) flagNameValueSlice {
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var items []FlagNameValue
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return flagNameValueSlice{
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flagName: flagName,
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items: &items,
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}
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}
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func (f flagNameValueSlice) Empty() bool {
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if f.items == nil {
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return true
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}
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return len(*f.items) == 0
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}
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func (f flagNameValueSlice) AllItems() []FlagNameValue {
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if f.items == nil {
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return nil
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}
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return *f.items
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}
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func (f flagNameValueSlice) Alias(flagName string) flagNameValueSlice {
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return flagNameValueSlice{
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flagName: flagName,
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items: f.items,
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}
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}
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func (f flagNameValueSlice) String() string {
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return ""
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}
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func (f flagNameValueSlice) Set(str string) error {
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*f.items = append(*f.items, FlagNameValue{
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Name: f.flagName,
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Value: str,
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})
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return nil
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}
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type FlagNameValue struct {
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Name string
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Value string
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}
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func (f FlagNameValue) String() string {
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return fmt.Sprintf("%s=%q", f.Name, f.Value)
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}
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