69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
package format
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import (
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"fmt"
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"math"
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)
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const (
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Byte = 1
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// Decimal prefixes (1000-based) - used for buffer sizes, memory capacity
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KiloByte = Byte * 1000
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MegaByte = KiloByte * 1000
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GigaByte = MegaByte * 1000
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TeraByte = GigaByte * 1000
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// Binary prefixes (1024-based) - used for file sizes
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KibiByte = Byte * 1024
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MebiByte = KibiByte * 1024
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GibiByte = MebiByte * 1024
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TebiByte = GibiByte * 1024
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)
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// HumanBytes formats bytes using binary prefixes (1024-based) with short unit names.
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// This follows the convention used by most file systems and tools for file sizes.
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func HumanBytes(b int64) string {
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var value float64
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var unit string
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switch {
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case b >= TebiByte:
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value = float64(b) / TebiByte
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unit = "TB"
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case b >= GibiByte:
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value = float64(b) / GibiByte
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unit = "GB"
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case b >= MebiByte:
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value = float64(b) / MebiByte
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unit = "MB"
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case b >= KibiByte:
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value = float64(b) / KibiByte
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unit = "KB"
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default:
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return fmt.Sprintf("%d B", b)
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}
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switch {
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case value >= 10:
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return fmt.Sprintf("%d %s", int(value), unit)
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case value != math.Trunc(value):
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return fmt.Sprintf("%.1f %s", value, unit)
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default:
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return fmt.Sprintf("%d %s", int(value), unit)
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}
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}
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func HumanBytes2(b uint64) string {
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switch {
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case b >= GibiByte:
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return fmt.Sprintf("%.1f GiB", float64(b)/GibiByte)
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case b >= MebiByte:
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return fmt.Sprintf("%.1f MiB", float64(b)/MebiByte)
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case b >= KibiByte:
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return fmt.Sprintf("%.1f KiB", float64(b)/KibiByte)
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default:
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return fmt.Sprintf("%d B", b)
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}
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}
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