yaole
26 lines
617 B
Go
26 lines
617 B
Go
package internal
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import "runtime"
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// GetFuncName get function's name
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func GetFuncName() string {
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pc := make([]uintptr, 1)
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runtime.Callers(2, pc)
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f := runtime.FuncForPC(pc[0])
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return f.Name()
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}
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// sliceForAppend extends the input slice by n bytes. head is the full extended
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// slice, while tail is the appended part. If the original slice has sufficient
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// capacity no allocation is performed.
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func SliceForAppend(in []byte, n int) (head, tail []byte) {
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if total := len(in) + n; cap(in) >= total {
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head = in[:total]
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} else {
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head = make([]byte, total)
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copy(head, in)
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}
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tail = head[len(in):]
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return
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}
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