forked from mirror/go-ethereum
cmd/geth: fix #853 colorize console output in windows
parent
ac85fdc75e
commit
c750ef09e1
@ -0,0 +1,42 @@ |
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# go-colorable |
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Colorable writer for windows. |
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For example, most of logger packages doesn't show colors on windows. (I know we can do it with ansicon. But I don't want.) |
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This package is possible to handle escape sequence for ansi color on windows. |
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## Too Bad! |
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![](https://raw.githubusercontent.com/mattn/go-colorable/gh-pages/bad.png) |
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## So Good! |
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![](https://raw.githubusercontent.com/mattn/go-colorable/gh-pages/good.png) |
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## Usage |
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```go |
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logrus.SetOutput(colorable.NewColorableStdout()) |
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logrus.Info("succeeded") |
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logrus.Warn("not correct") |
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logrus.Error("something error") |
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logrus.Fatal("panic") |
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``` |
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You can compile above code on non-windows OSs. |
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## Installation |
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``` |
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$ go get github.com/mattn/go-colorable |
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``` |
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# License |
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MIT |
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# Author |
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Yasuhiro Matsumoto (a.k.a mattn) |
@ -0,0 +1,16 @@ |
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// +build !windows
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package colorable |
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import ( |
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"io" |
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"os" |
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) |
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func NewColorableStdout() io.Writer { |
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return os.Stdout |
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} |
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func NewColorableStderr() io.Writer { |
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return os.Stderr |
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} |
@ -0,0 +1,594 @@ |
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package colorable |
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import ( |
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"bytes" |
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"fmt" |
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"io" |
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"os" |
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"strconv" |
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"strings" |
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"syscall" |
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"unsafe" |
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"github.com/mattn/go-isatty" |
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) |
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const ( |
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foregroundBlue = 0x1 |
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foregroundGreen = 0x2 |
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foregroundRed = 0x4 |
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foregroundIntensity = 0x8 |
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foregroundMask = (foregroundRed | foregroundBlue | foregroundGreen | foregroundIntensity) |
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backgroundBlue = 0x10 |
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backgroundGreen = 0x20 |
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backgroundRed = 0x40 |
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backgroundIntensity = 0x80 |
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backgroundMask = (backgroundRed | backgroundBlue | backgroundGreen | backgroundIntensity) |
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) |
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type wchar uint16 |
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type short int16 |
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type dword uint32 |
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type word uint16 |
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type coord struct { |
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x short |
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y short |
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} |
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type smallRect struct { |
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left short |
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top short |
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right short |
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bottom short |
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} |
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type consoleScreenBufferInfo struct { |
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size coord |
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cursorPosition coord |
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attributes word |
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window smallRect |
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maximumWindowSize coord |
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} |
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var ( |
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kernel32 = syscall.NewLazyDLL("kernel32.dll") |
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procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo") |
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procSetConsoleTextAttribute = kernel32.NewProc("SetConsoleTextAttribute") |
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) |
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type Writer struct { |
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out io.Writer |
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handle syscall.Handle |
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lastbuf bytes.Buffer |
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oldattr word |
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} |
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func NewColorableStdout() io.Writer { |
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var csbi consoleScreenBufferInfo |
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out := os.Stdout |
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if !isatty.IsTerminal(out.Fd()) { |
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return out |
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} |
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handle := syscall.Handle(out.Fd()) |
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procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi))) |
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return &Writer{out: out, handle: handle, oldattr: csbi.attributes} |
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} |
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func NewColorableStderr() io.Writer { |
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var csbi consoleScreenBufferInfo |
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out := os.Stderr |
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if !isatty.IsTerminal(out.Fd()) { |
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return out |
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} |
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handle := syscall.Handle(out.Fd()) |
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procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi))) |
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return &Writer{out: out, handle: handle, oldattr: csbi.attributes} |
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} |
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var color256 = map[int]int{ |
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0: 0x000000, |
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1: 0x800000, |
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2: 0x008000, |
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3: 0x808000, |
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4: 0x000080, |
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5: 0x800080, |
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6: 0x008080, |
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7: 0xc0c0c0, |
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8: 0x808080, |
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9: 0xff0000, |
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10: 0x00ff00, |
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11: 0xffff00, |
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12: 0x0000ff, |
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13: 0xff00ff, |
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14: 0x00ffff, |
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15: 0xffffff, |
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16: 0x000000, |
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17: 0x00005f, |
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18: 0x000087, |
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19: 0x0000af, |
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20: 0x0000d7, |
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21: 0x0000ff, |
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22: 0x005f00, |
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23: 0x005f5f, |
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24: 0x005f87, |
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25: 0x005faf, |
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26: 0x005fd7, |
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27: 0x005fff, |
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28: 0x008700, |
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29: 0x00875f, |
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30: 0x008787, |
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31: 0x0087af, |
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32: 0x0087d7, |
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33: 0x0087ff, |
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34: 0x00af00, |
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35: 0x00af5f, |
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36: 0x00af87, |
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37: 0x00afaf, |
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38: 0x00afd7, |
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39: 0x00afff, |
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40: 0x00d700, |
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41: 0x00d75f, |
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42: 0x00d787, |
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43: 0x00d7af, |
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44: 0x00d7d7, |
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45: 0x00d7ff, |
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46: 0x00ff00, |
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47: 0x00ff5f, |
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48: 0x00ff87, |
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49: 0x00ffaf, |
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50: 0x00ffd7, |
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51: 0x00ffff, |
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52: 0x5f0000, |
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53: 0x5f005f, |
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54: 0x5f0087, |
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55: 0x5f00af, |
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56: 0x5f00d7, |
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57: 0x5f00ff, |
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58: 0x5f5f00, |
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59: 0x5f5f5f, |
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60: 0x5f5f87, |
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61: 0x5f5faf, |
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62: 0x5f5fd7, |
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63: 0x5f5fff, |
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64: 0x5f8700, |
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65: 0x5f875f, |
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66: 0x5f8787, |
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67: 0x5f87af, |
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68: 0x5f87d7, |
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69: 0x5f87ff, |
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70: 0x5faf00, |
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71: 0x5faf5f, |
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72: 0x5faf87, |
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73: 0x5fafaf, |
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74: 0x5fafd7, |
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75: 0x5fafff, |
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76: 0x5fd700, |
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77: 0x5fd75f, |
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78: 0x5fd787, |
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79: 0x5fd7af, |
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80: 0x5fd7d7, |
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81: 0x5fd7ff, |
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82: 0x5fff00, |
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83: 0x5fff5f, |
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84: 0x5fff87, |
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85: 0x5fffaf, |
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86: 0x5fffd7, |
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87: 0x5fffff, |
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88: 0x870000, |
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89: 0x87005f, |
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90: 0x870087, |
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91: 0x8700af, |
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92: 0x8700d7, |
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93: 0x8700ff, |
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94: 0x875f00, |
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95: 0x875f5f, |
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96: 0x875f87, |
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97: 0x875faf, |
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98: 0x875fd7, |
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99: 0x875fff, |
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100: 0x878700, |
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101: 0x87875f, |
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102: 0x878787, |
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103: 0x8787af, |
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104: 0x8787d7, |
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105: 0x8787ff, |
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106: 0x87af00, |
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107: 0x87af5f, |
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108: 0x87af87, |
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109: 0x87afaf, |
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110: 0x87afd7, |
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111: 0x87afff, |
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112: 0x87d700, |
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113: 0x87d75f, |
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114: 0x87d787, |
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115: 0x87d7af, |
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116: 0x87d7d7, |
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117: 0x87d7ff, |
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118: 0x87ff00, |
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119: 0x87ff5f, |
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120: 0x87ff87, |
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121: 0x87ffaf, |
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122: 0x87ffd7, |
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123: 0x87ffff, |
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124: 0xaf0000, |
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125: 0xaf005f, |
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126: 0xaf0087, |
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127: 0xaf00af, |
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128: 0xaf00d7, |
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129: 0xaf00ff, |
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130: 0xaf5f00, |
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131: 0xaf5f5f, |
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132: 0xaf5f87, |
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133: 0xaf5faf, |
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134: 0xaf5fd7, |
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135: 0xaf5fff, |
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136: 0xaf8700, |
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137: 0xaf875f, |
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138: 0xaf8787, |
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139: 0xaf87af, |
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140: 0xaf87d7, |
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141: 0xaf87ff, |
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142: 0xafaf00, |
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143: 0xafaf5f, |
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144: 0xafaf87, |
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145: 0xafafaf, |
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146: 0xafafd7, |
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147: 0xafafff, |
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148: 0xafd700, |
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149: 0xafd75f, |
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150: 0xafd787, |
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151: 0xafd7af, |
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152: 0xafd7d7, |
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153: 0xafd7ff, |
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154: 0xafff00, |
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155: 0xafff5f, |
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156: 0xafff87, |
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157: 0xafffaf, |
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158: 0xafffd7, |
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159: 0xafffff, |
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160: 0xd70000, |
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161: 0xd7005f, |
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162: 0xd70087, |
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163: 0xd700af, |
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164: 0xd700d7, |
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165: 0xd700ff, |
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166: 0xd75f00, |
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167: 0xd75f5f, |
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168: 0xd75f87, |
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169: 0xd75faf, |
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170: 0xd75fd7, |
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171: 0xd75fff, |
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172: 0xd78700, |
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173: 0xd7875f, |
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174: 0xd78787, |
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175: 0xd787af, |
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176: 0xd787d7, |
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177: 0xd787ff, |
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178: 0xd7af00, |
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179: 0xd7af5f, |
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180: 0xd7af87, |
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181: 0xd7afaf, |
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182: 0xd7afd7, |
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183: 0xd7afff, |
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184: 0xd7d700, |
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185: 0xd7d75f, |
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186: 0xd7d787, |
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187: 0xd7d7af, |
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188: 0xd7d7d7, |
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189: 0xd7d7ff, |
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190: 0xd7ff00, |
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191: 0xd7ff5f, |
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192: 0xd7ff87, |
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193: 0xd7ffaf, |
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194: 0xd7ffd7, |
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195: 0xd7ffff, |
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196: 0xff0000, |
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197: 0xff005f, |
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198: 0xff0087, |
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199: 0xff00af, |
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200: 0xff00d7, |
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201: 0xff00ff, |
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202: 0xff5f00, |
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203: 0xff5f5f, |
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204: 0xff5f87, |
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205: 0xff5faf, |
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206: 0xff5fd7, |
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207: 0xff5fff, |
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208: 0xff8700, |
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209: 0xff875f, |
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210: 0xff8787, |
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211: 0xff87af, |
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212: 0xff87d7, |
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213: 0xff87ff, |
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214: 0xffaf00, |
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215: 0xffaf5f, |
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216: 0xffaf87, |
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217: 0xffafaf, |
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218: 0xffafd7, |
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219: 0xffafff, |
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220: 0xffd700, |
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221: 0xffd75f, |
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222: 0xffd787, |
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223: 0xffd7af, |
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224: 0xffd7d7, |
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225: 0xffd7ff, |
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226: 0xffff00, |
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227: 0xffff5f, |
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228: 0xffff87, |
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229: 0xffffaf, |
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230: 0xffffd7, |
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231: 0xffffff, |
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232: 0x080808, |
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233: 0x121212, |
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234: 0x1c1c1c, |
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235: 0x262626, |
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236: 0x303030, |
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237: 0x3a3a3a, |
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238: 0x444444, |
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239: 0x4e4e4e, |
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240: 0x585858, |
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241: 0x626262, |
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242: 0x6c6c6c, |
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243: 0x767676, |
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244: 0x808080, |
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245: 0x8a8a8a, |
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246: 0x949494, |
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247: 0x9e9e9e, |
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248: 0xa8a8a8, |
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249: 0xb2b2b2, |
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250: 0xbcbcbc, |
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251: 0xc6c6c6, |
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252: 0xd0d0d0, |
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253: 0xdadada, |
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254: 0xe4e4e4, |
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255: 0xeeeeee, |
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} |
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func (w *Writer) Write(data []byte) (n int, err error) { |
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var csbi consoleScreenBufferInfo |
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procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi))) |
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er := bytes.NewBuffer(data) |
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loop: |
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for { |
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r1, _, err := procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi))) |
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if r1 == 0 { |
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break loop |
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} |
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c1, _, err := er.ReadRune() |
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if err != nil { |
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break loop |
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} |
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if c1 != 0x1b { |
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fmt.Fprint(w.out, string(c1)) |
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continue |
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} |
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c2, _, err := er.ReadRune() |
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if err != nil { |
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w.lastbuf.WriteRune(c1) |
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break loop |
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} |
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if c2 != 0x5b { |
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w.lastbuf.WriteRune(c1) |
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w.lastbuf.WriteRune(c2) |
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continue |
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} |
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var buf bytes.Buffer |
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var m rune |
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for { |
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c, _, err := er.ReadRune() |
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if err != nil { |
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w.lastbuf.WriteRune(c1) |
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w.lastbuf.WriteRune(c2) |
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w.lastbuf.Write(buf.Bytes()) |
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break loop |
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} |
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if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' { |
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m = c |
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break |
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} |
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buf.Write([]byte(string(c))) |
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} |
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switch m { |
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case 'm': |
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attr := csbi.attributes |
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cs := buf.String() |
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if cs == "" { |
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procSetConsoleTextAttribute.Call(uintptr(w.handle), uintptr(w.oldattr)) |
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continue |
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} |
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token := strings.Split(cs, ";") |
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for i, ns := range token { |
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if n, err = strconv.Atoi(ns); err == nil { |
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switch { |
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case n == 0 || n == 100: |
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attr = w.oldattr |
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case 1 <= n && n <= 5: |
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attr |= foregroundIntensity |
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case n == 7: |
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attr = ((attr & foregroundMask) << 4) | ((attr & backgroundMask) >> 4) |
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case 22 == n || n == 25 || n == 25: |
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attr |= foregroundIntensity |
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case n == 27: |
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attr = ((attr & foregroundMask) << 4) | ((attr & backgroundMask) >> 4) |
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case 30 <= n && n <= 37: |
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attr = (attr & backgroundMask) |
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if (n-30)&1 != 0 { |
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attr |= foregroundRed |
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} |
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if (n-30)&2 != 0 { |
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attr |= foregroundGreen |
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} |
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if (n-30)&4 != 0 { |
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attr |= foregroundBlue |
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} |
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case n == 38: // set foreground color.
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if i < len(token)-2 && token[i+1] == "5" { |
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if n256, err := strconv.Atoi(token[i+2]); err == nil { |
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if n256foreAttr == nil { |
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n256setup() |
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} |
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attr &= backgroundMask |
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attr |= n256foreAttr[n256] |
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i += 2 |
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} |
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} else { |
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attr = attr & (w.oldattr & backgroundMask) |
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} |
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case n == 39: // reset foreground color.
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attr &= backgroundMask |
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attr |= w.oldattr & foregroundMask |
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case 40 <= n && n <= 47: |
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attr = (attr & foregroundMask) |
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if (n-40)&1 != 0 { |
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attr |= backgroundRed |
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} |
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if (n-40)&2 != 0 { |
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attr |= backgroundGreen |
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} |
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if (n-40)&4 != 0 { |
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attr |= backgroundBlue |
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} |
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case n == 48: // set background color.
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if i < len(token)-2 && token[i+1] == "5" { |
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if n256, err := strconv.Atoi(token[i+2]); err == nil { |
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if n256backAttr == nil { |
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n256setup() |
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} |
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attr &= foregroundMask |
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attr |= n256backAttr[n256] |
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i += 2 |
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} |
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} else { |
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attr = attr & (w.oldattr & foregroundMask) |
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} |
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case n == 49: // reset foreground color.
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attr &= foregroundMask |
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attr |= w.oldattr & backgroundMask |
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} |
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procSetConsoleTextAttribute.Call(uintptr(w.handle), uintptr(attr)) |
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} |
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} |
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} |
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} |
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return len(data) - w.lastbuf.Len(), nil |
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} |
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type consoleColor struct { |
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red bool |
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green bool |
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blue bool |
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intensity bool |
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} |
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func minmax3(a, b, c int) (min, max int) { |
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if a < b { |
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if b < c { |
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return a, c |
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} else if a < c { |
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return a, b |
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} else { |
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return c, b |
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} |
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} else { |
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if a < c { |
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return b, c |
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} else if b < c { |
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return b, a |
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} else { |
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return c, a |
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} |
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} |
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} |
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func toConsoleColor(rgb int) (c consoleColor) { |
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r, g, b := (rgb&0xFF0000)>>16, (rgb&0x00FF00)>>8, rgb&0x0000FF |
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min, max := minmax3(r, g, b) |
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a := (min + max) / 2 |
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if r < 128 && g < 128 && b < 128 { |
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if r >= a { |
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c.red = true |
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} |
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if g >= a { |
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c.green = true |
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} |
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if b >= a { |
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c.blue = true |
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} |
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// non-intensed white is lighter than intensed black, so swap those.
|
||||
if c.red && c.green && c.blue { |
||||
c.red, c.green, c.blue = false, false, false |
||||
c.intensity = true |
||||
} |
||||
} else { |
||||
if min < 128 { |
||||
min = 128 |
||||
a = (min + max) / 2 |
||||
} |
||||
if r >= a { |
||||
c.red = true |
||||
} |
||||
if g >= a { |
||||
c.green = true |
||||
} |
||||
if b >= a { |
||||
c.blue = true |
||||
} |
||||
c.intensity = true |
||||
// intensed black is darker than non-intensed white, so swap those.
|
||||
if !c.red && !c.green && !c.blue { |
||||
c.red, c.green, c.blue = true, true, true |
||||
c.intensity = false |
||||
} |
||||
} |
||||
return c |
||||
} |
||||
|
||||
func (c consoleColor) foregroundAttr() (attr word) { |
||||
if c.red { |
||||
attr |= foregroundRed |
||||
} |
||||
if c.green { |
||||
attr |= foregroundGreen |
||||
} |
||||
if c.blue { |
||||
attr |= foregroundBlue |
||||
} |
||||
if c.intensity { |
||||
attr |= foregroundIntensity |
||||
} |
||||
return |
||||
} |
||||
|
||||
func (c consoleColor) backgroundAttr() (attr word) { |
||||
if c.red { |
||||
attr |= backgroundRed |
||||
} |
||||
if c.green { |
||||
attr |= backgroundGreen |
||||
} |
||||
if c.blue { |
||||
attr |= backgroundBlue |
||||
} |
||||
if c.intensity { |
||||
attr |= backgroundIntensity |
||||
} |
||||
return |
||||
} |
||||
|
||||
var n256foreAttr []word |
||||
var n256backAttr []word |
||||
|
||||
func n256setup() { |
||||
n256foreAttr = make([]word, 256) |
||||
n256backAttr = make([]word, 256) |
||||
for i, rgb := range color256 { |
||||
c := toConsoleColor(rgb) |
||||
n256foreAttr[i] = c.foregroundAttr() |
||||
n256backAttr[i] = c.backgroundAttr() |
||||
} |
||||
} |
@ -0,0 +1,37 @@ |
||||
# go-isatty |
||||
|
||||
isatty for golang |
||||
|
||||
## Usage |
||||
|
||||
```go |
||||
package main |
||||
|
||||
import ( |
||||
"fmt" |
||||
"github.com/mattn/go-isatty" |
||||
"os" |
||||
) |
||||
|
||||
func main() { |
||||
if isatty.IsTerminal(os.Stdout.Fd()) { |
||||
fmt.Println("Is Terminal") |
||||
} else { |
||||
fmt.Println("Is Not Terminal") |
||||
} |
||||
} |
||||
``` |
||||
|
||||
## Installation |
||||
|
||||
``` |
||||
$ go get github.com/mattn/go-isatty |
||||
``` |
||||
|
||||
# License |
||||
|
||||
MIT |
||||
|
||||
# Author |
||||
|
||||
Yasuhiro Matsumoto (a.k.a mattn) |
@ -0,0 +1,2 @@ |
||||
// Package isatty implements interface to isatty
|
||||
package isatty |
@ -0,0 +1,17 @@ |
||||
// +build darwin freebsd
|
||||
|
||||
package isatty |
||||
|
||||
import ( |
||||
"syscall" |
||||
"unsafe" |
||||
) |
||||
|
||||
const ioctlReadTermios = syscall.TIOCGETA |
||||
|
||||
// IsTerminal return true if the file descriptor is terminal.
|
||||
func IsTerminal(fd uintptr) bool { |
||||
var termios syscall.Termios |
||||
_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0) |
||||
return err == 0 |
||||
} |
@ -0,0 +1,17 @@ |
||||
// +build linux
|
||||
|
||||
package isatty |
||||
|
||||
import ( |
||||
"syscall" |
||||
"unsafe" |
||||
) |
||||
|
||||
const ioctlReadTermios = syscall.TCGETS |
||||
|
||||
// IsTerminal return true if the file descriptor is terminal.
|
||||
func IsTerminal(fd uintptr) bool { |
||||
var termios syscall.Termios |
||||
_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0) |
||||
return err == 0 |
||||
} |
@ -0,0 +1,18 @@ |
||||
// +build windows
|
||||
|
||||
package isatty |
||||
|
||||
import ( |
||||
"syscall" |
||||
"unsafe" |
||||
) |
||||
|
||||
var kernel32 = syscall.NewLazyDLL("kernel32.dll") |
||||
var procGetConsoleMode = kernel32.NewProc("GetConsoleMode") |
||||
|
||||
// IsTerminal return true if the file descriptor is terminal.
|
||||
func IsTerminal(fd uintptr) bool { |
||||
var st uint32 |
||||
r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, fd, uintptr(unsafe.Pointer(&st)), 0) |
||||
return r != 0 && e == 0 |
||||
} |
Loading…
Reference in new issue