103 lines
2.3 KiB
Go
103 lines
2.3 KiB
Go
package cli
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import (
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"flag"
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"strconv"
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)
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// Context is a type that is passed through to
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// each Handler action in a cli application. Context
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// can be used to retrieve context-specific Args and
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// parsed command-line options.
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type Context struct {
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App *App
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flagSet *flag.FlagSet
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globalSet *flag.FlagSet
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}
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func NewContext(app *App, set *flag.FlagSet, globalSet *flag.FlagSet) *Context {
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return &Context{app, set, globalSet}
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}
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// Looks up the value of a local int flag, returns 0 if no int flag exists
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func (c *Context) Int(name string) int {
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return c.lookupInt(name, c.flagSet)
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}
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// Looks up the value of a local bool flag, returns false if no bool flag exists
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func (c *Context) Bool(name string) bool {
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return c.lookupBool(name, c.flagSet)
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}
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// Looks up the value of a local string flag, returns "" if no string flag exists
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func (c *Context) String(name string) string {
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return c.lookupString(name, c.flagSet)
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}
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func (c *Context) StringSlice(name string) flag.Value {
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return c.lookupStringSlice(name, c.flagSet)
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}
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// Looks up the value of a global int flag, returns 0 if no int flag exists
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func (c *Context) GlobalInt(name string) int {
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return c.lookupInt(name, c.globalSet)
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}
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// Looks up the value of a global bool flag, returns false if no bool flag exists
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func (c *Context) GlobalBool(name string) bool {
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return c.lookupBool(name, c.globalSet)
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}
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// Looks up the value of a global string flag, returns "" if no string flag exists
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func (c *Context) GlobalString(name string) string {
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return c.lookupString(name, c.globalSet)
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}
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func (c *Context) Args() []string {
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return c.flagSet.Args()
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}
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func (c *Context) lookupInt(name string, set *flag.FlagSet) int {
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f := set.Lookup(name)
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if f != nil {
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val, err := strconv.Atoi(f.Value.String())
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if err != nil {
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return 0
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}
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return val
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}
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return 0
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}
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func (c *Context) lookupString(name string, set *flag.FlagSet) string {
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f := set.Lookup(name)
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if f != nil {
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return f.Value.String()
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}
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return ""
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}
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func (c *Context) lookupStringSlice(name string, set *flag.FlagSet) flag.Value {
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f := set.Lookup(name)
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if f != nil {
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return f.Value
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}
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return nil
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}
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func (c *Context) lookupBool(name string, set *flag.FlagSet) bool {
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f := set.Lookup(name)
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if f != nil {
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val, err := strconv.ParseBool(f.Value.String())
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if err != nil {
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return false
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}
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return val
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}
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return false
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}
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