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20 lines
500 B
Go
20 lines
500 B
Go
package envsubst
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import "os"
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// Eval replaces ${var} in the string based on the mapping function.
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func Eval(s string, mapping func(string) string) (string, error) {
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t, err := Parse(s)
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if err != nil {
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return s, err
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}
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return t.Execute(mapping)
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}
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// EvalEnv replaces ${var} in the string according to the values of the
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// current environment variables. References to undefined variables are
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// replaced by the empty string.
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func EvalEnv(s string) (string, error) {
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return Eval(s, os.Getenv)
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}
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