diff options
Diffstat (limited to 'vendor/github.com/dustin/go-humanize/comma.go')
-rw-r--r-- | vendor/github.com/dustin/go-humanize/comma.go | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/vendor/github.com/dustin/go-humanize/comma.go b/vendor/github.com/dustin/go-humanize/comma.go new file mode 100644 index 0000000..520ae3e --- /dev/null +++ b/vendor/github.com/dustin/go-humanize/comma.go | |||
@@ -0,0 +1,116 @@ | |||
1 | package humanize | ||
2 | |||
3 | import ( | ||
4 | "bytes" | ||
5 | "math" | ||
6 | "math/big" | ||
7 | "strconv" | ||
8 | "strings" | ||
9 | ) | ||
10 | |||
11 | // Comma produces a string form of the given number in base 10 with | ||
12 | // commas after every three orders of magnitude. | ||
13 | // | ||
14 | // e.g. Comma(834142) -> 834,142 | ||
15 | func Comma(v int64) string { | ||
16 | sign := "" | ||
17 | |||
18 | // Min int64 can't be negated to a usable value, so it has to be special cased. | ||
19 | if v == math.MinInt64 { | ||
20 | return "-9,223,372,036,854,775,808" | ||
21 | } | ||
22 | |||
23 | if v < 0 { | ||
24 | sign = "-" | ||
25 | v = 0 - v | ||
26 | } | ||
27 | |||
28 | parts := []string{"", "", "", "", "", "", ""} | ||
29 | j := len(parts) - 1 | ||
30 | |||
31 | for v > 999 { | ||
32 | parts[j] = strconv.FormatInt(v%1000, 10) | ||
33 | switch len(parts[j]) { | ||
34 | case 2: | ||
35 | parts[j] = "0" + parts[j] | ||
36 | case 1: | ||
37 | parts[j] = "00" + parts[j] | ||
38 | } | ||
39 | v = v / 1000 | ||
40 | j-- | ||
41 | } | ||
42 | parts[j] = strconv.Itoa(int(v)) | ||
43 | return sign + strings.Join(parts[j:], ",") | ||
44 | } | ||
45 | |||
46 | // Commaf produces a string form of the given number in base 10 with | ||
47 | // commas after every three orders of magnitude. | ||
48 | // | ||
49 | // e.g. Commaf(834142.32) -> 834,142.32 | ||
50 | func Commaf(v float64) string { | ||
51 | buf := &bytes.Buffer{} | ||
52 | if v < 0 { | ||
53 | buf.Write([]byte{'-'}) | ||
54 | v = 0 - v | ||
55 | } | ||
56 | |||
57 | comma := []byte{','} | ||
58 | |||
59 | parts := strings.Split(strconv.FormatFloat(v, 'f', -1, 64), ".") | ||
60 | pos := 0 | ||
61 | if len(parts[0])%3 != 0 { | ||
62 | pos += len(parts[0]) % 3 | ||
63 | buf.WriteString(parts[0][:pos]) | ||
64 | buf.Write(comma) | ||
65 | } | ||
66 | for ; pos < len(parts[0]); pos += 3 { | ||
67 | buf.WriteString(parts[0][pos : pos+3]) | ||
68 | buf.Write(comma) | ||
69 | } | ||
70 | buf.Truncate(buf.Len() - 1) | ||
71 | |||
72 | if len(parts) > 1 { | ||
73 | buf.Write([]byte{'.'}) | ||
74 | buf.WriteString(parts[1]) | ||
75 | } | ||
76 | return buf.String() | ||
77 | } | ||
78 | |||
79 | // CommafWithDigits works like the Commaf but limits the resulting | ||
80 | // string to the given number of decimal places. | ||
81 | // | ||
82 | // e.g. CommafWithDigits(834142.32, 1) -> 834,142.3 | ||
83 | func CommafWithDigits(f float64, decimals int) string { | ||
84 | return stripTrailingDigits(Commaf(f), decimals) | ||
85 | } | ||
86 | |||
87 | // BigComma produces a string form of the given big.Int in base 10 | ||
88 | // with commas after every three orders of magnitude. | ||
89 | func BigComma(b *big.Int) string { | ||
90 | sign := "" | ||
91 | if b.Sign() < 0 { | ||
92 | sign = "-" | ||
93 | b.Abs(b) | ||
94 | } | ||
95 | |||
96 | athousand := big.NewInt(1000) | ||
97 | c := (&big.Int{}).Set(b) | ||
98 | _, m := oom(c, athousand) | ||
99 | parts := make([]string, m+1) | ||
100 | j := len(parts) - 1 | ||
101 | |||
102 | mod := &big.Int{} | ||
103 | for b.Cmp(athousand) >= 0 { | ||
104 | b.DivMod(b, athousand, mod) | ||
105 | parts[j] = strconv.FormatInt(mod.Int64(), 10) | ||
106 | switch len(parts[j]) { | ||
107 | case 2: | ||
108 | parts[j] = "0" + parts[j] | ||
109 | case 1: | ||
110 | parts[j] = "00" + parts[j] | ||
111 | } | ||
112 | j-- | ||
113 | } | ||
114 | parts[j] = strconv.Itoa(int(b.Int64())) | ||
115 | return sign + strings.Join(parts[j:], ",") | ||
116 | } | ||