From 20f6c05ec50739d31f4dbe9fde0d223f2c43f6e8 Mon Sep 17 00:00:00 2001 From: Wim Date: Sat, 16 Oct 2021 23:11:32 +0200 Subject: Update vendor --- vendor/github.com/dustin/go-humanize/bytes.go | 143 ++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 vendor/github.com/dustin/go-humanize/bytes.go (limited to 'vendor/github.com/dustin/go-humanize/bytes.go') diff --git a/vendor/github.com/dustin/go-humanize/bytes.go b/vendor/github.com/dustin/go-humanize/bytes.go new file mode 100644 index 00000000..0b498f48 --- /dev/null +++ b/vendor/github.com/dustin/go-humanize/bytes.go @@ -0,0 +1,143 @@ +package humanize + +import ( + "fmt" + "math" + "strconv" + "strings" + "unicode" +) + +// IEC Sizes. +// kibis of bits +const ( + Byte = 1 << (iota * 10) + KiByte + MiByte + GiByte + TiByte + PiByte + EiByte +) + +// SI Sizes. +const ( + IByte = 1 + KByte = IByte * 1000 + MByte = KByte * 1000 + GByte = MByte * 1000 + TByte = GByte * 1000 + PByte = TByte * 1000 + EByte = PByte * 1000 +) + +var bytesSizeTable = map[string]uint64{ + "b": Byte, + "kib": KiByte, + "kb": KByte, + "mib": MiByte, + "mb": MByte, + "gib": GiByte, + "gb": GByte, + "tib": TiByte, + "tb": TByte, + "pib": PiByte, + "pb": PByte, + "eib": EiByte, + "eb": EByte, + // Without suffix + "": Byte, + "ki": KiByte, + "k": KByte, + "mi": MiByte, + "m": MByte, + "gi": GiByte, + "g": GByte, + "ti": TiByte, + "t": TByte, + "pi": PiByte, + "p": PByte, + "ei": EiByte, + "e": EByte, +} + +func logn(n, b float64) float64 { + return math.Log(n) / math.Log(b) +} + +func humanateBytes(s uint64, base float64, sizes []string) string { + if s < 10 { + return fmt.Sprintf("%d B", s) + } + e := math.Floor(logn(float64(s), base)) + suffix := sizes[int(e)] + val := math.Floor(float64(s)/math.Pow(base, e)*10+0.5) / 10 + f := "%.0f %s" + if val < 10 { + f = "%.1f %s" + } + + return fmt.Sprintf(f, val, suffix) +} + +// Bytes produces a human readable representation of an SI size. +// +// See also: ParseBytes. +// +// Bytes(82854982) -> 83 MB +func Bytes(s uint64) string { + sizes := []string{"B", "kB", "MB", "GB", "TB", "PB", "EB"} + return humanateBytes(s, 1000, sizes) +} + +// IBytes produces a human readable representation of an IEC size. +// +// See also: ParseBytes. +// +// IBytes(82854982) -> 79 MiB +func IBytes(s uint64) string { + sizes := []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"} + return humanateBytes(s, 1024, sizes) +} + +// ParseBytes parses a string representation of bytes into the number +// of bytes it represents. +// +// See Also: Bytes, IBytes. +// +// ParseBytes("42 MB") -> 42000000, nil +// ParseBytes("42 mib") -> 44040192, nil +func ParseBytes(s string) (uint64, error) { + lastDigit := 0 + hasComma := false + for _, r := range s { + if !(unicode.IsDigit(r) || r == '.' || r == ',') { + break + } + if r == ',' { + hasComma = true + } + lastDigit++ + } + + num := s[:lastDigit] + if hasComma { + num = strings.Replace(num, ",", "", -1) + } + + f, err := strconv.ParseFloat(num, 64) + if err != nil { + return 0, err + } + + extra := strings.ToLower(strings.TrimSpace(s[lastDigit:])) + if m, ok := bytesSizeTable[extra]; ok { + f *= float64(m) + if f >= math.MaxUint64 { + return 0, fmt.Errorf("too large: %v", s) + } + return uint64(f), nil + } + + return 0, fmt.Errorf("unhandled size name: %v", extra) +} -- cgit v1.2.3