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44 lines
569 B
44 lines
569 B
11 months ago
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package proc
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import (
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"os"
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"strconv"
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"sync"
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)
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var (
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envs = make(map[string]string)
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envLock sync.RWMutex
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)
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// Env returns the value of the given environment variable.
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func Env(name string) string {
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envLock.RLock()
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val, ok := envs[name]
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envLock.RUnlock()
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if ok {
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return val
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}
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val = os.Getenv(name)
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envLock.Lock()
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envs[name] = val
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envLock.Unlock()
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return val
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}
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func EnvInt(name string) (int, bool) {
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val := Env(name)
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if len(val) == 0 {
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return 0, false
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}
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n, err := strconv.Atoi(val)
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if err != nil {
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return 0, false
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}
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return n, true
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}
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