HGKeeper

package environment

import (

"os"

)

func (e Environment) expandMapper(name string) string {

// We might have something like $(pwd), in which case we don't want

// to wrap the name in `{}`, which would cause it to be ${}(pwd) and

// cannot be evaluated by a run task.

if name == "" {

return "$"

}

if val, found := e[name]; found {

if val != "" {

return val

}

return os.Getenv(name)

}

return ""

}

// Expand looks for the given key and returns the value if one is found

// recursing if the value contains another variable.

func (e Environment) Expand(key string) string {

return os.Expand(key, e.expandMapper)

}

func (e Environment) Expandv(items []string) []string {

expanded := make([]string, len(items))

for idx, item := range items {

expanded[idx] = e.Expand(item)

}

return expanded

}