Alec Thomas
50 lines
951 B
Go
50 lines
951 B
Go
package kong
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import (
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"fmt"
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"os"
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"path/filepath"
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)
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type Kong struct {
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Model *ApplicationModel
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// Termination function (defaults to os.Exit)
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Terminate func(int)
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}
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// New creates a new Kong parser into grammar.
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func New(name, description string, grammar interface{}) (*Kong, error) {
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if name == "" {
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name = filepath.Base(os.Args[0])
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}
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model := &ApplicationModel{
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Name: name,
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Description: description,
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}
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return &Kong{
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Model: model,
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Terminate: os.Exit,
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}, nil
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}
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// Parse arguments into target.
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func (k *Kong) Parse(args []string) error {
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return nil
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}
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func (k *Kong) Errorf(format string, args ...interface{}) {
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fmt.Fprintf(os.Stderr, k.Model.Name+": "+format, args...)
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}
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func (k *Kong) FatalIfErrorf(err error, args ...interface{}) {
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if err == nil {
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return
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}
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msg := err.Error()
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if len(args) == 0 {
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msg = fmt.Sprintf(args[0].(string), args...) + ": " + err.Error()
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}
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k.Errorf("%s", msg)
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k.Terminate(1)
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}
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