diff options
Diffstat (limited to 'vendor/github.com/dustin/go-humanize/number.go')
| -rw-r--r-- | vendor/github.com/dustin/go-humanize/number.go | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/vendor/github.com/dustin/go-humanize/number.go b/vendor/github.com/dustin/go-humanize/number.go deleted file mode 100644 index dec61865..00000000 --- a/vendor/github.com/dustin/go-humanize/number.go +++ /dev/null @@ -1,192 +0,0 @@ -package humanize - -/* -Slightly adapted from the source to fit go-humanize. - -Author: https://github.com/gorhill -Source: https://gist.github.com/gorhill/5285193 - -*/ - -import ( - "math" - "strconv" -) - -var ( - renderFloatPrecisionMultipliers = [...]float64{ - 1, - 10, - 100, - 1000, - 10000, - 100000, - 1000000, - 10000000, - 100000000, - 1000000000, - } - - renderFloatPrecisionRounders = [...]float64{ - 0.5, - 0.05, - 0.005, - 0.0005, - 0.00005, - 0.000005, - 0.0000005, - 0.00000005, - 0.000000005, - 0.0000000005, - } -) - -// FormatFloat produces a formatted number as string based on the following user-specified criteria: -// * thousands separator -// * decimal separator -// * decimal precision -// -// Usage: s := RenderFloat(format, n) -// The format parameter tells how to render the number n. -// -// See examples: http://play.golang.org/p/LXc1Ddm1lJ -// -// Examples of format strings, given n = 12345.6789: -// "#,###.##" => "12,345.67" -// "#,###." => "12,345" -// "#,###" => "12345,678" -// "#\u202F###,##" => "12 345,68" -// "#.###,###### => 12.345,678900 -// "" (aka default format) => 12,345.67 -// -// The highest precision allowed is 9 digits after the decimal symbol. -// There is also a version for integer number, FormatInteger(), -// which is convenient for calls within template. -func FormatFloat(format string, n float64) string { - // Special cases: - // NaN = "NaN" - // +Inf = "+Infinity" - // -Inf = "-Infinity" - if math.IsNaN(n) { - return "NaN" - } - if n > math.MaxFloat64 { - return "Infinity" - } - if n < -math.MaxFloat64 { - return "-Infinity" - } - - // default format - precision := 2 - decimalStr := "." - thousandStr := "," - positiveStr := "" - negativeStr := "-" - - if len(format) > 0 { - format := []rune(format) - - // If there is an explicit format directive, - // then default values are these: - precision = 9 - thousandStr = "" - - // collect indices of meaningful formatting directives - formatIndx := []int{} - for i, char := range format { - if char != '#' && char != '0' { - formatIndx = append(formatIndx, i) - } - } - - if len(formatIndx) > 0 { - // Directive at index 0: - // Must be a '+' - // Raise an error if not the case - // index: 0123456789 - // +0.000,000 - // +000,000.0 - // +0000.00 - // +0000 - if formatIndx[0] == 0 { - if format[formatIndx[0]] != '+' { - panic("RenderFloat(): invalid positive sign directive") - } - positiveStr = "+" - formatIndx = formatIndx[1:] - } - - // Two directives: - // First is thousands separator - // Raise an error if not followed by 3-digit - // 0123456789 - // 0.000,000 - // 000,000.00 - if len(formatIndx) == 2 { - if (formatIndx[1] - formatIndx[0]) != 4 { - panic("RenderFloat(): thousands separator directive must be followed by 3 digit-specifiers") - } - thousandStr = string(format[formatIndx[0]]) - formatIndx = formatIndx[1:] - } - - // One directive: - // Directive is decimal separator - // The number of digit-specifier following the separator indicates wanted precision - // 0123456789 - // 0.00 - // 000,0000 - if len(formatIndx) == 1 { - decimalStr = string(format[formatIndx[0]]) - precision = len(format) - formatIndx[0] - 1 - } - } - } - - // generate sign part - var signStr string - if n >= 0.000000001 { - signStr = positiveStr - } else if n <= -0.000000001 { - signStr = negativeStr - n = -n - } else { - signStr = "" - n = 0.0 - } - - // split number into integer and fractional parts - intf, fracf := math.Modf(n + renderFloatPrecisionRounders[precision]) - - // generate integer part string - intStr := strconv.FormatInt(int64(intf), 10) - - // add thousand separator if required - if len(thousandStr) > 0 { - for i := len(intStr); i > 3; { - i -= 3 - intStr = intStr[:i] + thousandStr + intStr[i:] - } - } - - // no fractional part, we can leave now - if precision == 0 { - return signStr + intStr - } - - // generate fractional part - fracStr := strconv.Itoa(int(fracf * renderFloatPrecisionMultipliers[precision])) - // may need padding - if len(fracStr) < precision { - fracStr = "000000000000000"[:precision-len(fracStr)] + fracStr - } - - return signStr + intStr + decimalStr + fracStr -} - -// FormatInteger produces a formatted number as string. -// See FormatFloat. -func FormatInteger(format string, n int) string { - return FormatFloat(format, float64(n)) -} |