diff options
Diffstat (limited to 'vendor/github.com/urfave/cli/v2/flag_string.go')
-rw-r--r-- | vendor/github.com/urfave/cli/v2/flag_string.go | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/vendor/github.com/urfave/cli/v2/flag_string.go b/vendor/github.com/urfave/cli/v2/flag_string.go new file mode 100644 index 000000000..400bb532e --- /dev/null +++ b/vendor/github.com/urfave/cli/v2/flag_string.go @@ -0,0 +1,95 @@ +package cli + +import "flag" + +// StringFlag is a flag with type string +type StringFlag struct { + Name string + Aliases []string + Usage string + EnvVars []string + FilePath string + Required bool + Hidden bool + TakesFile bool + Value string + DefaultText string + Destination *string + HasBeenSet bool +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *StringFlag) IsSet() bool { + return f.HasBeenSet +} + +// String returns a readable representation of this value +// (for usage defaults) +func (f *StringFlag) String() string { + return FlagStringer(f) +} + +// Names returns the names of the flag +func (f *StringFlag) Names() []string { + return flagNames(f.Name, f.Aliases) +} + +// IsRequired returns whether or not the flag is required +func (f *StringFlag) IsRequired() bool { + return f.Required +} + +// TakesValue returns true of the flag takes a value, otherwise false +func (f *StringFlag) TakesValue() bool { + return true +} + +// GetUsage returns the usage string for the flag +func (f *StringFlag) 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 *StringFlag) GetValue() string { + return f.Value +} + +// Apply populates the flag given the flag set and environment +func (f *StringFlag) Apply(set *flag.FlagSet) error { + if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok { + f.Value = val + f.HasBeenSet = true + } + + for _, name := range f.Names() { + if f.Destination != nil { + set.StringVar(f.Destination, name, f.Value, f.Usage) + continue + } + set.String(name, f.Value, f.Usage) + } + + return nil +} + +// String looks up the value of a local StringFlag, returns +// "" if not found +func (c *Context) String(name string) string { + if fs := lookupFlagSet(name, c); fs != nil { + return lookupString(name, fs) + } + return "" +} + +func lookupString(name string, set *flag.FlagSet) string { + f := set.Lookup(name) + if f != nil { + parsed, err := f.Value.String(), error(nil) + if err != nil { + return "" + } + return parsed + } + return "" +} |