35 lines
696 B
Go
35 lines
696 B
Go
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package envvars
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import (
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"os"
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"strings"
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)
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func Object[T any](key string, defaultValue T, converter func(string) (T, error)) T {
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if v, ok := os.LookupEnv(key); ok {
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if v2, err := converter(v); err == nil {
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return v2
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}
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}
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return defaultValue
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}
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func ObjectSlice[T any](key, sep string, defaultValue []T, converter func(string) (T, error)) []T {
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return Object(key, defaultValue, func(s string) ([]T, error) {
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if s == "" {
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return []T{}, nil
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}
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splits := strings.Split(s, sep)
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values := make([]T, 0, len(splits))
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for _, s := range splits {
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v, err := converter(s)
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if err != nil {
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return values, err
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}
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values = append(values, v)
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}
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return values, nil
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})
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}
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