1 files changed, 143 insertions, 0 deletions

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 0000000..0b498f4
--- /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)
+}