47 lines
827 B
Go
47 lines
827 B
Go
package langext
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import (
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"errors"
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"fmt"
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)
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func FormatBytesToSI(b uint64) string {
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const unit = 1000
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if b < unit {
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return fmt.Sprintf("%d B", b)
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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 fmt.Sprintf("%.1f %cB", float64(b)/float64(div), "kMGTPE"[exp])
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}
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func BytesXOR(a []byte, b []byte) ([]byte, error) {
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if len(a) != len(b) {
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return nil, errors.New("length mismatch")
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}
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r := make([]byte, len(a))
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for i := 0; i < len(a); i++ {
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r[i] = a[i] ^ b[i]
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}
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return r, nil
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}
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func FormatBytes(b int64) string {
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const unit = 1024
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if b < unit {
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return fmt.Sprintf("%d B", b)
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}
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div, exp := int64(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 fmt.Sprintf("%.1f %ciB", float64(b)/float64(div), "KMGTPE"[exp])
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}
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