24 lines
572 B
Go
24 lines
572 B
Go
package args
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import "regexp"
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var (
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envRe = regexp.MustCompile(`\${[a-zA-Z0-9_\.]+}`)
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)
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// ReplaceEnv takes an arg and replaces all occurences of environment variables.
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// If the variable is found in the passed map it is replaced, otherwise the
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// original string is returned.
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func ReplaceEnv(arg string, environents ...map[string]string) string {
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return envRe.ReplaceAllStringFunc(arg, func(arg string) string {
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stripped := arg[2 : len(arg)-1]
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for _, env := range environents {
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if value, ok := env[stripped]; ok {
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return value
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}
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}
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return arg
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})
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}
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