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| The MIT License (MIT) | ||
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| Copyright (c) 2013 Fatih Arslan | ||
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| Permission is hereby granted, free of charge, to any person obtaining a copy of | ||
| this software and associated documentation files (the "Software"), to deal in | ||
| the Software without restriction, including without limitation the rights to | ||
| use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | ||
| the Software, and to permit persons to whom the Software is furnished to do so, | ||
| subject to the following conditions: | ||
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| The above copyright notice and this permission notice shall be included in all | ||
| copies or substantial portions of the Software. | ||
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| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | ||
| FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | ||
| COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | ||
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| // Package fastcolor is an extreme subset of the fatih/color package to get | ||
| // ANSI colors on standard output. | ||
| // | ||
| // Modified to output the color string to a StringWriter with fixed-width | ||
| // formatting (spaces for padding). Minimal color and attribute support. | ||
| package fastcolor | ||
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| import ( | ||
| "io" | ||
| "os" | ||
| "strings" | ||
| "unicode/utf8" | ||
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| "github.com/mattn/go-isatty" | ||
| ) | ||
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| type Color string | ||
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| const ( | ||
| Reset Color = "0" | ||
| Bold Color = "1" | ||
| FgBlack Color = "30" | ||
| FgRed Color = "31" | ||
| FgGreen Color = "32" | ||
| FgYellow Color = "33" | ||
| FgBlue Color = "34" | ||
| FgMagenta Color = "35" | ||
| FgCyan Color = "36" | ||
| FgWhite Color = "37" | ||
| ) | ||
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| var spaceStr string = strings.Repeat(" ", 132) | ||
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| // NoColor defines if the output is colorized or not. It's dynamically set to | ||
| // false or true based on the stdout's file descriptor referring to a terminal | ||
| // or not. It's also set to true if the NO_COLOR environment variable is | ||
| // set (regardless of its value). This is a global option and affects all | ||
| // colors. | ||
| var NoColor = noColorIsSet() || os.Getenv("TERM") == "dumb" || | ||
| (!isatty.IsTerminal(os.Stdout.Fd()) && !isatty.IsCygwinTerminal(os.Stdout.Fd())) | ||
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| // noColorIsSet returns true if the environment variable NO_COLOR is set to a non-empty string. | ||
| func noColorIsSet() bool { | ||
| return os.Getenv("NO_COLOR") != "" | ||
| } | ||
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| func (c Color) WriteStringFixed(w io.StringWriter, s string, width int, leftpad bool) { | ||
| if !NoColor { | ||
| w.WriteString("\x1b[") | ||
| w.WriteString(string(c)) | ||
| w.WriteString("m") | ||
| } | ||
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| l := utf8.RuneCountInString(s) | ||
| spaces := width - l | ||
| if spaces > 0 { | ||
| if leftpad { | ||
| w.WriteString(spaceStr[:spaces]) | ||
| w.WriteString(s) | ||
| } else { | ||
| w.WriteString(s) | ||
| w.WriteString(spaceStr[:spaces]) | ||
| } | ||
| } else { | ||
| w.WriteString(s[:width]) | ||
| } | ||
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| if !NoColor { | ||
| w.WriteString("\x1b[0m") | ||
| } | ||
| } |