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package config
import (
"sync"
)
// delayedEnvironment is an implementation of the Environment which wraps the legacy
// behavior of `*config.Configuration.loadGitConfig()`.
//
// It is functionally equivalent to call `cfg.loadGitConfig()` before calling
// methods on the Environment type.
type delayedEnvironment struct {
env Environment
loading sync.Mutex
callback func() Environment
}
// Get is shorthand for calling the e.Load(), and then returning
// `e.env.Get(key)`.
func (e *delayedEnvironment) Get(key string) (string, bool) {
e.Load()
return e.env.Get(key)
}
// Get is shorthand for calling the e.Load(), and then returning
// `e.env.GetAll(key)`.
func (e *delayedEnvironment) GetAll(key string) []string {
e.Load()
return e.env.GetAll(key)
}
// Get is shorthand for calling the e.Load(), and then returning
// `e.env.Bool(key, def)`.
func (e *delayedEnvironment) Bool(key string, def bool) bool {
e.Load()
return e.env.Bool(key, def)
}
// Get is shorthand for calling the e.Load(), and then returning
// `e.env.Int(key, def)`.
func (e *delayedEnvironment) Int(key string, def int) int {
e.Load()
return e.env.Int(key, def)
}
// All returns a copy of all the key/value pairs for the current git config.
func (e *delayedEnvironment) All() map[string][]string {
e.Load()
return e.env.All()
}
// Load reads and parses the .gitconfig by calling ReadGitConfig. It
// also sets values on the configuration instance `g.config`.
//
// If Load has already been called, this method will bail out early,
// and return false. Otherwise it will perform the entire parse and return true.
//
// Load is safe to call across multiple goroutines.
func (e *delayedEnvironment) Load() {
e.loading.Lock()
defer e.loading.Unlock()
if e.env != nil {
return
}
e.env = e.callback()
}
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