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Add template func FileSize
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3d032dfb5a
commit
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@ -21,6 +21,7 @@ var TemplateFuncs template.FuncMap = map[string]interface{}{
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},
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},
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"str2html": Str2html,
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"str2html": Str2html,
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"TimeSince": TimeSince,
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"TimeSince": TimeSince,
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"FileSize": FileSize,
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"Subtract": Subtract,
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"Subtract": Subtract,
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"ActionIcon": ActionIcon,
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"ActionIcon": ActionIcon,
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"ActionDesc": ActionDesc,
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"ActionDesc": ActionDesc,
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@ -8,6 +8,7 @@ import (
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"crypto/md5"
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"crypto/md5"
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"encoding/hex"
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"encoding/hex"
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"fmt"
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"fmt"
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"math"
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"strings"
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"strings"
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"time"
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"time"
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)
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)
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@ -80,6 +81,51 @@ func TimeSince(then time.Time) string {
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return then.String()
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return then.String()
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}
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}
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const (
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Byte = 1
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KByte = Byte * 1024
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MByte = KByte * 1024
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GByte = MByte * 1024
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TByte = GByte * 1024
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PByte = TByte * 1024
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EByte = PByte * 1024
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)
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var bytesSizeTable = map[string]uint64{
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"b": Byte,
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"kb": KByte,
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"mb": MByte,
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"gb": GByte,
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"tb": TByte,
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"pb": PByte,
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"eb": EByte,
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}
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func logn(n, b float64) float64 {
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return math.Log(n) / math.Log(b)
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}
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func humanateBytes(s uint64, base float64, sizes []string) string {
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if s < 10 {
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return fmt.Sprintf("%dB", s)
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}
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e := math.Floor(logn(float64(s), base))
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suffix := sizes[int(e)]
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val := float64(s) / math.Pow(base, math.Floor(e))
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f := "%.0f"
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if val < 10 {
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f = "%.1f"
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}
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return fmt.Sprintf(f+"%s", val, suffix)
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}
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// FileSize calculates the file size and generate user-friendly string.
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func FileSize(s uint64) string {
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sizes := []string{"B", "KB", "MB", "GB", "TB", "PB", "EB"}
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return humanateBytes(uint64(s), 1024, sizes)
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}
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// Subtract deals with subtraction of all types of number.
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// Subtract deals with subtraction of all types of number.
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func Subtract(left interface{}, right interface{}) interface{} {
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func Subtract(left interface{}, right interface{}) interface{} {
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var rleft, rright int64
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var rleft, rright int64
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