aboutsummaryrefslogtreecommitdiffstats
path: root/vendor/github.com/dustin/go-humanize/bigbytes.go
diff options
context:
space:
mode:
authorMichael Muré <batolettre@gmail.com>2018-07-19 18:10:45 +0200
committerMichael Muré <batolettre@gmail.com>2018-07-19 18:10:45 +0200
commit0a7814f33a44a57924ac4c6dfeca20cf741dc1f3 (patch)
tree7e0afa88cf16dbaaab14e97dca8a6365a0300b67 /vendor/github.com/dustin/go-humanize/bigbytes.go
parentd7313068fbb95829175fe108352b7b1e99e6fe9d (diff)
downloadgit-bug-0a7814f33a44a57924ac4c6dfeca20cf741dc1f3.tar.gz
humanize time
Diffstat (limited to 'vendor/github.com/dustin/go-humanize/bigbytes.go')
-rw-r--r--vendor/github.com/dustin/go-humanize/bigbytes.go173
1 files changed, 173 insertions, 0 deletions
diff --git a/vendor/github.com/dustin/go-humanize/bigbytes.go b/vendor/github.com/dustin/go-humanize/bigbytes.go
new file mode 100644
index 00000000..1a2bf617
--- /dev/null
+++ b/vendor/github.com/dustin/go-humanize/bigbytes.go
@@ -0,0 +1,173 @@
+package humanize
+
+import (
+ "fmt"
+ "math/big"
+ "strings"
+ "unicode"
+)
+
+var (
+ bigIECExp = big.NewInt(1024)
+
+ // BigByte is one byte in bit.Ints
+ BigByte = big.NewInt(1)
+ // BigKiByte is 1,024 bytes in bit.Ints
+ BigKiByte = (&big.Int{}).Mul(BigByte, bigIECExp)
+ // BigMiByte is 1,024 k bytes in bit.Ints
+ BigMiByte = (&big.Int{}).Mul(BigKiByte, bigIECExp)
+ // BigGiByte is 1,024 m bytes in bit.Ints
+ BigGiByte = (&big.Int{}).Mul(BigMiByte, bigIECExp)
+ // BigTiByte is 1,024 g bytes in bit.Ints
+ BigTiByte = (&big.Int{}).Mul(BigGiByte, bigIECExp)
+ // BigPiByte is 1,024 t bytes in bit.Ints
+ BigPiByte = (&big.Int{}).Mul(BigTiByte, bigIECExp)
+ // BigEiByte is 1,024 p bytes in bit.Ints
+ BigEiByte = (&big.Int{}).Mul(BigPiByte, bigIECExp)
+ // BigZiByte is 1,024 e bytes in bit.Ints
+ BigZiByte = (&big.Int{}).Mul(BigEiByte, bigIECExp)
+ // BigYiByte is 1,024 z bytes in bit.Ints
+ BigYiByte = (&big.Int{}).Mul(BigZiByte, bigIECExp)
+)
+
+var (
+ bigSIExp = big.NewInt(1000)
+
+ // BigSIByte is one SI byte in big.Ints
+ BigSIByte = big.NewInt(1)
+ // BigKByte is 1,000 SI bytes in big.Ints
+ BigKByte = (&big.Int{}).Mul(BigSIByte, bigSIExp)
+ // BigMByte is 1,000 SI k bytes in big.Ints
+ BigMByte = (&big.Int{}).Mul(BigKByte, bigSIExp)
+ // BigGByte is 1,000 SI m bytes in big.Ints
+ BigGByte = (&big.Int{}).Mul(BigMByte, bigSIExp)
+ // BigTByte is 1,000 SI g bytes in big.Ints
+ BigTByte = (&big.Int{}).Mul(BigGByte, bigSIExp)
+ // BigPByte is 1,000 SI t bytes in big.Ints
+ BigPByte = (&big.Int{}).Mul(BigTByte, bigSIExp)
+ // BigEByte is 1,000 SI p bytes in big.Ints
+ BigEByte = (&big.Int{}).Mul(BigPByte, bigSIExp)
+ // BigZByte is 1,000 SI e bytes in big.Ints
+ BigZByte = (&big.Int{}).Mul(BigEByte, bigSIExp)
+ // BigYByte is 1,000 SI z bytes in big.Ints
+ BigYByte = (&big.Int{}).Mul(BigZByte, bigSIExp)
+)
+
+var bigBytesSizeTable = map[string]*big.Int{
+ "b": BigByte,
+ "kib": BigKiByte,
+ "kb": BigKByte,
+ "mib": BigMiByte,
+ "mb": BigMByte,
+ "gib": BigGiByte,
+ "gb": BigGByte,
+ "tib": BigTiByte,
+ "tb": BigTByte,
+ "pib": BigPiByte,
+ "pb": BigPByte,
+ "eib": BigEiByte,
+ "eb": BigEByte,
+ "zib": BigZiByte,
+ "zb": BigZByte,
+ "yib": BigYiByte,
+ "yb": BigYByte,
+ // Without suffix
+ "": BigByte,
+ "ki": BigKiByte,
+ "k": BigKByte,
+ "mi": BigMiByte,
+ "m": BigMByte,
+ "gi": BigGiByte,
+ "g": BigGByte,
+ "ti": BigTiByte,
+ "t": BigTByte,
+ "pi": BigPiByte,
+ "p": BigPByte,
+ "ei": BigEiByte,
+ "e": BigEByte,
+ "z": BigZByte,
+ "zi": BigZiByte,
+ "y": BigYByte,
+ "yi": BigYiByte,
+}
+
+var ten = big.NewInt(10)
+
+func humanateBigBytes(s, base *big.Int, sizes []string) string {
+ if s.Cmp(ten) < 0 {
+ return fmt.Sprintf("%d B", s)
+ }
+ c := (&big.Int{}).Set(s)
+ val, mag := oomm(c, base, len(sizes)-1)
+ suffix := sizes[mag]
+ f := "%.0f %s"
+ if val < 10 {
+ f = "%.1f %s"
+ }
+
+ return fmt.Sprintf(f, val, suffix)
+
+}
+
+// BigBytes produces a human readable representation of an SI size.
+//
+// See also: ParseBigBytes.
+//
+// BigBytes(82854982) -> 83 MB
+func BigBytes(s *big.Int) string {
+ sizes := []string{"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
+ return humanateBigBytes(s, bigSIExp, sizes)
+}
+
+// BigIBytes produces a human readable representation of an IEC size.
+//
+// See also: ParseBigBytes.
+//
+// BigIBytes(82854982) -> 79 MiB
+func BigIBytes(s *big.Int) string {
+ sizes := []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"}
+ return humanateBigBytes(s, bigIECExp, sizes)
+}
+
+// ParseBigBytes parses a string representation of bytes into the number
+// of bytes it represents.
+//
+// See also: BigBytes, BigIBytes.
+//
+// ParseBigBytes("42 MB") -> 42000000, nil
+// ParseBigBytes("42 mib") -> 44040192, nil
+func ParseBigBytes(s string) (*big.Int, 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)
+ }
+
+ val := &big.Rat{}
+ _, err := fmt.Sscanf(num, "%f", val)
+ if err != nil {
+ return nil, err
+ }
+
+ extra := strings.ToLower(strings.TrimSpace(s[lastDigit:]))
+ if m, ok := bigBytesSizeTable[extra]; ok {
+ mv := (&big.Rat{}).SetInt(m)
+ val.Mul(val, mv)
+ rv := &big.Int{}
+ rv.Div(val.Num(), val.Denom())
+ return rv, nil
+ }
+
+ return nil, fmt.Errorf("unhandled size name: %v", extra)
+}