TUN-3233: List tunnels support filtering by deleted, name, existed at and id

vendor/github.com/urfave/cli/v2/flag_string_slice.go

@@ -0,0 +1,171 @@
+package cli
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"strings"
+)
+
+// StringSlice wraps a []string to satisfy flag.Value
+type StringSlice struct {
+	slice      []string
+	hasBeenSet bool
+}
+
+// NewStringSlice creates a *StringSlice with default values
+func NewStringSlice(defaults ...string) *StringSlice {
+	return &StringSlice{slice: append([]string{}, defaults...)}
+}
+
+// Set appends the string value to the list of values
+func (s *StringSlice) Set(value string) error {
+	if !s.hasBeenSet {
+		s.slice = []string{}
+		s.hasBeenSet = true
+	}
+
+	if strings.HasPrefix(value, slPfx) {
+		// Deserializing assumes overwrite
+		_ = json.Unmarshal([]byte(strings.Replace(value, slPfx, "", 1)), &s.slice)
+		s.hasBeenSet = true
+		return nil
+	}
+
+	s.slice = append(s.slice, value)
+
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (s *StringSlice) String() string {
+	return fmt.Sprintf("%s", s.slice)
+}
+
+// Serialize allows StringSlice to fulfill Serializer
+func (s *StringSlice) Serialize() string {
+	jsonBytes, _ := json.Marshal(s.slice)
+	return fmt.Sprintf("%s%s", slPfx, string(jsonBytes))
+}
+
+// Value returns the slice of strings set by this flag
+func (s *StringSlice) Value() []string {
+	return s.slice
+}
+
+// Get returns the slice of strings set by this flag
+func (s *StringSlice) Get() interface{} {
+	return *s
+}
+
+// StringSliceFlag is a flag with type *StringSlice
+type StringSliceFlag struct {
+	Name        string
+	Aliases     []string
+	Usage       string
+	EnvVars     []string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	TakesFile   bool
+	Value       *StringSlice
+	DefaultText string
+	HasBeenSet  bool
+	Destination *StringSlice
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *StringSliceFlag) IsSet() bool {
+	return f.HasBeenSet
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f *StringSliceFlag) String() string {
+	return FlagStringer(f)
+}
+
+// Names returns the names of the flag
+func (f *StringSliceFlag) Names() []string {
+	return flagNames(f.Name, f.Aliases)
+}
+
+// IsRequired returns whether or not the flag is required
+func (f *StringSliceFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f *StringSliceFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f *StringSliceFlag) 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 *StringSliceFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+func (f *StringSliceFlag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		f.Value = &StringSlice{}
+		destination := f.Value
+		if f.Destination != nil {
+			destination = f.Destination
+		}
+
+		for _, s := range strings.Split(val, ",") {
+			if err := destination.Set(strings.TrimSpace(s)); err != nil {
+				return fmt.Errorf("could not parse %q as string value for flag %s: %s", val, f.Name, err)
+			}
+		}
+
+		// Set this to false so that we reset the slice if we then set values from
+		// flags that have already been set by the environment.
+		destination.hasBeenSet = false
+		f.HasBeenSet = true
+	}
+
+	for _, name := range f.Names() {
+		if f.Value == nil {
+			f.Value = &StringSlice{}
+		}
+
+		if f.Destination != nil {
+			set.Var(f.Destination, name, f.Usage)
+			continue
+		}
+
+		set.Var(f.Value, name, f.Usage)
+	}
+
+	return nil
+}
+
+// StringSlice looks up the value of a local StringSliceFlag, returns
+// nil if not found
+func (c *Context) StringSlice(name string) []string {
+	if fs := lookupFlagSet(name, c); fs != nil {
+		return lookupStringSlice(name, fs)
+	}
+	return nil
+}
+
+func lookupStringSlice(name string, set *flag.FlagSet) []string {
+	f := set.Lookup(name)
+	if f != nil {
+		if slice, ok := f.Value.(*StringSlice); ok {
+			return slice.Value()
+		}
+	}
+	return nil
+}