diff options
Diffstat (limited to 'vendor/github.com/urfave/cli/context.go')
-rw-r--r-- | vendor/github.com/urfave/cli/context.go | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/vendor/github.com/urfave/cli/context.go b/vendor/github.com/urfave/cli/context.go deleted file mode 100644 index 552ee7405..000000000 --- a/vendor/github.com/urfave/cli/context.go +++ /dev/null @@ -1,287 +0,0 @@ -package cli - -import ( - "errors" - "flag" - "os" - "reflect" - "strings" - "syscall" -) - -// Context is a type that is passed through to -// each Handler action in a cli application. Context -// can be used to retrieve context-specific Args and -// parsed command-line options. -type Context struct { - App *App - Command Command - shellComplete bool - flagSet *flag.FlagSet - setFlags map[string]bool - parentContext *Context -} - -// NewContext creates a new context. For use in when invoking an App or Command action. -func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context { - c := &Context{App: app, flagSet: set, parentContext: parentCtx} - - if parentCtx != nil { - c.shellComplete = parentCtx.shellComplete - } - - return c -} - -// NumFlags returns the number of flags set -func (c *Context) NumFlags() int { - return c.flagSet.NFlag() -} - -// Set sets a context flag to a value. -func (c *Context) Set(name, value string) error { - c.setFlags = nil - return c.flagSet.Set(name, value) -} - -// GlobalSet sets a context flag to a value on the global flagset -func (c *Context) GlobalSet(name, value string) error { - globalContext(c).setFlags = nil - return globalContext(c).flagSet.Set(name, value) -} - -// IsSet determines if the flag was actually set -func (c *Context) IsSet(name string) bool { - if c.setFlags == nil { - c.setFlags = make(map[string]bool) - - c.flagSet.Visit(func(f *flag.Flag) { - c.setFlags[f.Name] = true - }) - - c.flagSet.VisitAll(func(f *flag.Flag) { - if _, ok := c.setFlags[f.Name]; ok { - return - } - c.setFlags[f.Name] = false - }) - - // XXX hack to support IsSet for flags with EnvVar - // - // There isn't an easy way to do this with the current implementation since - // whether a flag was set via an environment variable is very difficult to - // determine here. Instead, we intend to introduce a backwards incompatible - // change in version 2 to add `IsSet` to the Flag interface to push the - // responsibility closer to where the information required to determine - // whether a flag is set by non-standard means such as environment - // variables is available. - // - // See https://github.com/urfave/cli/issues/294 for additional discussion - flags := c.Command.Flags - if c.Command.Name == "" { // cannot == Command{} since it contains slice types - if c.App != nil { - flags = c.App.Flags - } - } - for _, f := range flags { - eachName(f.GetName(), func(name string) { - if isSet, ok := c.setFlags[name]; isSet || !ok { - return - } - - val := reflect.ValueOf(f) - if val.Kind() == reflect.Ptr { - val = val.Elem() - } - - filePathValue := val.FieldByName("FilePath") - if filePathValue.IsValid() { - eachName(filePathValue.String(), func(filePath string) { - if _, err := os.Stat(filePath); err == nil { - c.setFlags[name] = true - return - } - }) - } - - envVarValue := val.FieldByName("EnvVar") - if envVarValue.IsValid() { - eachName(envVarValue.String(), func(envVar string) { - envVar = strings.TrimSpace(envVar) - if _, ok := syscall.Getenv(envVar); ok { - c.setFlags[name] = true - return - } - }) - } - }) - } - } - - return c.setFlags[name] -} - -// GlobalIsSet determines if the global flag was actually set -func (c *Context) GlobalIsSet(name string) bool { - ctx := c - if ctx.parentContext != nil { - ctx = ctx.parentContext - } - - for ; ctx != nil; ctx = ctx.parentContext { - if ctx.IsSet(name) { - return true - } - } - return false -} - -// FlagNames returns a slice of flag names used in this context. -func (c *Context) FlagNames() (names []string) { - for _, flag := range c.Command.Flags { - name := strings.Split(flag.GetName(), ",")[0] - if name == "help" { - continue - } - names = append(names, name) - } - return -} - -// GlobalFlagNames returns a slice of global flag names used by the app. -func (c *Context) GlobalFlagNames() (names []string) { - for _, flag := range c.App.Flags { - name := strings.Split(flag.GetName(), ",")[0] - if name == "help" || name == "version" { - continue - } - names = append(names, name) - } - return -} - -// Parent returns the parent context, if any -func (c *Context) Parent() *Context { - return c.parentContext -} - -// value returns the value of the flag coressponding to `name` -func (c *Context) value(name string) interface{} { - return c.flagSet.Lookup(name).Value.(flag.Getter).Get() -} - -// Args contains apps console arguments -type Args []string - -// Args returns the command line arguments associated with the context. -func (c *Context) Args() Args { - args := Args(c.flagSet.Args()) - return args -} - -// NArg returns the number of the command line arguments. -func (c *Context) NArg() int { - return len(c.Args()) -} - -// Get returns the nth argument, or else a blank string -func (a Args) Get(n int) string { - if len(a) > n { - return a[n] - } - return "" -} - -// First returns the first argument, or else a blank string -func (a Args) First() string { - return a.Get(0) -} - -// Tail returns the rest of the arguments (not the first one) -// or else an empty string slice -func (a Args) Tail() []string { - if len(a) >= 2 { - return []string(a)[1:] - } - return []string{} -} - -// Present checks if there are any arguments present -func (a Args) Present() bool { - return len(a) != 0 -} - -// Swap swaps arguments at the given indexes -func (a Args) Swap(from, to int) error { - if from >= len(a) || to >= len(a) { - return errors.New("index out of range") - } - a[from], a[to] = a[to], a[from] - return nil -} - -func globalContext(ctx *Context) *Context { - if ctx == nil { - return nil - } - - for { - if ctx.parentContext == nil { - return ctx - } - ctx = ctx.parentContext - } -} - -func lookupGlobalFlagSet(name string, ctx *Context) *flag.FlagSet { - if ctx.parentContext != nil { - ctx = ctx.parentContext - } - for ; ctx != nil; ctx = ctx.parentContext { - if f := ctx.flagSet.Lookup(name); f != nil { - return ctx.flagSet - } - } - return nil -} - -func copyFlag(name string, ff *flag.Flag, set *flag.FlagSet) { - switch ff.Value.(type) { - case *StringSlice: - default: - set.Set(name, ff.Value.String()) - } -} - -func normalizeFlags(flags []Flag, set *flag.FlagSet) error { - visited := make(map[string]bool) - set.Visit(func(f *flag.Flag) { - visited[f.Name] = true - }) - for _, f := range flags { - parts := strings.Split(f.GetName(), ",") - if len(parts) == 1 { - continue - } - var ff *flag.Flag - for _, name := range parts { - name = strings.Trim(name, " ") - if visited[name] { - if ff != nil { - return errors.New("Cannot use two forms of the same flag: " + name + " " + ff.Name) - } - ff = set.Lookup(name) - } - } - if ff == nil { - continue - } - for _, name := range parts { - name = strings.Trim(name, " ") - if !visited[name] { - copyFlag(name, ff, set) - } - } - } - return nil -} |