mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-26 05:27:19 +00:00
64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
/*
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Copyright 2021 Erigon contributors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package common
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import (
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"fmt"
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)
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func ByteCount(b uint64) string {
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const unit = 1024
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if b < unit {
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return fmt.Sprintf("%dB", b)
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}
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bGb, exp := MBToGB(b)
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return fmt.Sprintf("%.1f%cB", bGb, "KMGTPE"[exp])
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}
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func MBToGB(b uint64) (float64, int) {
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const unit = 1024
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if b < unit {
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return float64(b), 0
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}
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div, exp := uint64(unit), 0
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for n := b / unit; n >= unit; n /= unit {
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div *= unit
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exp++
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}
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return float64(b) / float64(div), exp
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}
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func Copy(b []byte) []byte {
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if b == nil {
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return nil
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}
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c := make([]byte, len(b))
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copy(c, b)
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return c
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}
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func EnsureEnoughSize(in []byte, size int) []byte {
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if cap(in) < size {
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newBuf := make([]byte, size)
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copy(newBuf, in)
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return newBuf
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}
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return in[:size] // Reuse the space if it has enough capacity
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}
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