VOL-381 add unum container to support ONOS cluster formation under swarm
Change-Id: Ic260edda19bb199ed040f05164ab605f28c919d0
diff --git a/unum/vendor/github.com/mattn/go-colorable/colorable_windows.go b/unum/vendor/github.com/mattn/go-colorable/colorable_windows.go
new file mode 100644
index 0000000..c8f4e09
--- /dev/null
+++ b/unum/vendor/github.com/mattn/go-colorable/colorable_windows.go
@@ -0,0 +1,783 @@
+package colorable
+
+import (
+ "bytes"
+ "fmt"
+ "io"
+ "math"
+ "os"
+ "strconv"
+ "strings"
+ "syscall"
+ "unsafe"
+
+ "github.com/mattn/go-isatty"
+)
+
+const (
+ foregroundBlue = 0x1
+ foregroundGreen = 0x2
+ foregroundRed = 0x4
+ foregroundIntensity = 0x8
+ foregroundMask = (foregroundRed | foregroundBlue | foregroundGreen | foregroundIntensity)
+ backgroundBlue = 0x10
+ backgroundGreen = 0x20
+ backgroundRed = 0x40
+ backgroundIntensity = 0x80
+ backgroundMask = (backgroundRed | backgroundBlue | backgroundGreen | backgroundIntensity)
+)
+
+type wchar uint16
+type short int16
+type dword uint32
+type word uint16
+
+type coord struct {
+ x short
+ y short
+}
+
+type smallRect struct {
+ left short
+ top short
+ right short
+ bottom short
+}
+
+type consoleScreenBufferInfo struct {
+ size coord
+ cursorPosition coord
+ attributes word
+ window smallRect
+ maximumWindowSize coord
+}
+
+var (
+ kernel32 = syscall.NewLazyDLL("kernel32.dll")
+ procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
+ procSetConsoleTextAttribute = kernel32.NewProc("SetConsoleTextAttribute")
+ procSetConsoleCursorPosition = kernel32.NewProc("SetConsoleCursorPosition")
+ procFillConsoleOutputCharacter = kernel32.NewProc("FillConsoleOutputCharacterW")
+ procFillConsoleOutputAttribute = kernel32.NewProc("FillConsoleOutputAttribute")
+)
+
+type Writer struct {
+ out io.Writer
+ handle syscall.Handle
+ lastbuf bytes.Buffer
+ oldattr word
+}
+
+func NewColorable(file *os.File) io.Writer {
+ if file == nil {
+ panic("nil passed instead of *os.File to NewColorable()")
+ }
+
+ if isatty.IsTerminal(file.Fd()) {
+ var csbi consoleScreenBufferInfo
+ handle := syscall.Handle(file.Fd())
+ procGetConsoleScreenBufferInfo.Call(uintptr(handle), uintptr(unsafe.Pointer(&csbi)))
+ return &Writer{out: file, handle: handle, oldattr: csbi.attributes}
+ } else {
+ return file
+ }
+}
+
+func NewColorableStdout() io.Writer {
+ return NewColorable(os.Stdout)
+}
+
+func NewColorableStderr() io.Writer {
+ return NewColorable(os.Stderr)
+}
+
+var color256 = map[int]int{
+ 0: 0x000000,
+ 1: 0x800000,
+ 2: 0x008000,
+ 3: 0x808000,
+ 4: 0x000080,
+ 5: 0x800080,
+ 6: 0x008080,
+ 7: 0xc0c0c0,
+ 8: 0x808080,
+ 9: 0xff0000,
+ 10: 0x00ff00,
+ 11: 0xffff00,
+ 12: 0x0000ff,
+ 13: 0xff00ff,
+ 14: 0x00ffff,
+ 15: 0xffffff,
+ 16: 0x000000,
+ 17: 0x00005f,
+ 18: 0x000087,
+ 19: 0x0000af,
+ 20: 0x0000d7,
+ 21: 0x0000ff,
+ 22: 0x005f00,
+ 23: 0x005f5f,
+ 24: 0x005f87,
+ 25: 0x005faf,
+ 26: 0x005fd7,
+ 27: 0x005fff,
+ 28: 0x008700,
+ 29: 0x00875f,
+ 30: 0x008787,
+ 31: 0x0087af,
+ 32: 0x0087d7,
+ 33: 0x0087ff,
+ 34: 0x00af00,
+ 35: 0x00af5f,
+ 36: 0x00af87,
+ 37: 0x00afaf,
+ 38: 0x00afd7,
+ 39: 0x00afff,
+ 40: 0x00d700,
+ 41: 0x00d75f,
+ 42: 0x00d787,
+ 43: 0x00d7af,
+ 44: 0x00d7d7,
+ 45: 0x00d7ff,
+ 46: 0x00ff00,
+ 47: 0x00ff5f,
+ 48: 0x00ff87,
+ 49: 0x00ffaf,
+ 50: 0x00ffd7,
+ 51: 0x00ffff,
+ 52: 0x5f0000,
+ 53: 0x5f005f,
+ 54: 0x5f0087,
+ 55: 0x5f00af,
+ 56: 0x5f00d7,
+ 57: 0x5f00ff,
+ 58: 0x5f5f00,
+ 59: 0x5f5f5f,
+ 60: 0x5f5f87,
+ 61: 0x5f5faf,
+ 62: 0x5f5fd7,
+ 63: 0x5f5fff,
+ 64: 0x5f8700,
+ 65: 0x5f875f,
+ 66: 0x5f8787,
+ 67: 0x5f87af,
+ 68: 0x5f87d7,
+ 69: 0x5f87ff,
+ 70: 0x5faf00,
+ 71: 0x5faf5f,
+ 72: 0x5faf87,
+ 73: 0x5fafaf,
+ 74: 0x5fafd7,
+ 75: 0x5fafff,
+ 76: 0x5fd700,
+ 77: 0x5fd75f,
+ 78: 0x5fd787,
+ 79: 0x5fd7af,
+ 80: 0x5fd7d7,
+ 81: 0x5fd7ff,
+ 82: 0x5fff00,
+ 83: 0x5fff5f,
+ 84: 0x5fff87,
+ 85: 0x5fffaf,
+ 86: 0x5fffd7,
+ 87: 0x5fffff,
+ 88: 0x870000,
+ 89: 0x87005f,
+ 90: 0x870087,
+ 91: 0x8700af,
+ 92: 0x8700d7,
+ 93: 0x8700ff,
+ 94: 0x875f00,
+ 95: 0x875f5f,
+ 96: 0x875f87,
+ 97: 0x875faf,
+ 98: 0x875fd7,
+ 99: 0x875fff,
+ 100: 0x878700,
+ 101: 0x87875f,
+ 102: 0x878787,
+ 103: 0x8787af,
+ 104: 0x8787d7,
+ 105: 0x8787ff,
+ 106: 0x87af00,
+ 107: 0x87af5f,
+ 108: 0x87af87,
+ 109: 0x87afaf,
+ 110: 0x87afd7,
+ 111: 0x87afff,
+ 112: 0x87d700,
+ 113: 0x87d75f,
+ 114: 0x87d787,
+ 115: 0x87d7af,
+ 116: 0x87d7d7,
+ 117: 0x87d7ff,
+ 118: 0x87ff00,
+ 119: 0x87ff5f,
+ 120: 0x87ff87,
+ 121: 0x87ffaf,
+ 122: 0x87ffd7,
+ 123: 0x87ffff,
+ 124: 0xaf0000,
+ 125: 0xaf005f,
+ 126: 0xaf0087,
+ 127: 0xaf00af,
+ 128: 0xaf00d7,
+ 129: 0xaf00ff,
+ 130: 0xaf5f00,
+ 131: 0xaf5f5f,
+ 132: 0xaf5f87,
+ 133: 0xaf5faf,
+ 134: 0xaf5fd7,
+ 135: 0xaf5fff,
+ 136: 0xaf8700,
+ 137: 0xaf875f,
+ 138: 0xaf8787,
+ 139: 0xaf87af,
+ 140: 0xaf87d7,
+ 141: 0xaf87ff,
+ 142: 0xafaf00,
+ 143: 0xafaf5f,
+ 144: 0xafaf87,
+ 145: 0xafafaf,
+ 146: 0xafafd7,
+ 147: 0xafafff,
+ 148: 0xafd700,
+ 149: 0xafd75f,
+ 150: 0xafd787,
+ 151: 0xafd7af,
+ 152: 0xafd7d7,
+ 153: 0xafd7ff,
+ 154: 0xafff00,
+ 155: 0xafff5f,
+ 156: 0xafff87,
+ 157: 0xafffaf,
+ 158: 0xafffd7,
+ 159: 0xafffff,
+ 160: 0xd70000,
+ 161: 0xd7005f,
+ 162: 0xd70087,
+ 163: 0xd700af,
+ 164: 0xd700d7,
+ 165: 0xd700ff,
+ 166: 0xd75f00,
+ 167: 0xd75f5f,
+ 168: 0xd75f87,
+ 169: 0xd75faf,
+ 170: 0xd75fd7,
+ 171: 0xd75fff,
+ 172: 0xd78700,
+ 173: 0xd7875f,
+ 174: 0xd78787,
+ 175: 0xd787af,
+ 176: 0xd787d7,
+ 177: 0xd787ff,
+ 178: 0xd7af00,
+ 179: 0xd7af5f,
+ 180: 0xd7af87,
+ 181: 0xd7afaf,
+ 182: 0xd7afd7,
+ 183: 0xd7afff,
+ 184: 0xd7d700,
+ 185: 0xd7d75f,
+ 186: 0xd7d787,
+ 187: 0xd7d7af,
+ 188: 0xd7d7d7,
+ 189: 0xd7d7ff,
+ 190: 0xd7ff00,
+ 191: 0xd7ff5f,
+ 192: 0xd7ff87,
+ 193: 0xd7ffaf,
+ 194: 0xd7ffd7,
+ 195: 0xd7ffff,
+ 196: 0xff0000,
+ 197: 0xff005f,
+ 198: 0xff0087,
+ 199: 0xff00af,
+ 200: 0xff00d7,
+ 201: 0xff00ff,
+ 202: 0xff5f00,
+ 203: 0xff5f5f,
+ 204: 0xff5f87,
+ 205: 0xff5faf,
+ 206: 0xff5fd7,
+ 207: 0xff5fff,
+ 208: 0xff8700,
+ 209: 0xff875f,
+ 210: 0xff8787,
+ 211: 0xff87af,
+ 212: 0xff87d7,
+ 213: 0xff87ff,
+ 214: 0xffaf00,
+ 215: 0xffaf5f,
+ 216: 0xffaf87,
+ 217: 0xffafaf,
+ 218: 0xffafd7,
+ 219: 0xffafff,
+ 220: 0xffd700,
+ 221: 0xffd75f,
+ 222: 0xffd787,
+ 223: 0xffd7af,
+ 224: 0xffd7d7,
+ 225: 0xffd7ff,
+ 226: 0xffff00,
+ 227: 0xffff5f,
+ 228: 0xffff87,
+ 229: 0xffffaf,
+ 230: 0xffffd7,
+ 231: 0xffffff,
+ 232: 0x080808,
+ 233: 0x121212,
+ 234: 0x1c1c1c,
+ 235: 0x262626,
+ 236: 0x303030,
+ 237: 0x3a3a3a,
+ 238: 0x444444,
+ 239: 0x4e4e4e,
+ 240: 0x585858,
+ 241: 0x626262,
+ 242: 0x6c6c6c,
+ 243: 0x767676,
+ 244: 0x808080,
+ 245: 0x8a8a8a,
+ 246: 0x949494,
+ 247: 0x9e9e9e,
+ 248: 0xa8a8a8,
+ 249: 0xb2b2b2,
+ 250: 0xbcbcbc,
+ 251: 0xc6c6c6,
+ 252: 0xd0d0d0,
+ 253: 0xdadada,
+ 254: 0xe4e4e4,
+ 255: 0xeeeeee,
+}
+
+func (w *Writer) Write(data []byte) (n int, err error) {
+ var csbi consoleScreenBufferInfo
+ procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+
+ er := bytes.NewBuffer(data)
+loop:
+ for {
+ r1, _, err := procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+ if r1 == 0 {
+ break loop
+ }
+
+ c1, _, err := er.ReadRune()
+ if err != nil {
+ break loop
+ }
+ if c1 != 0x1b {
+ fmt.Fprint(w.out, string(c1))
+ continue
+ }
+ c2, _, err := er.ReadRune()
+ if err != nil {
+ w.lastbuf.WriteRune(c1)
+ break loop
+ }
+ if c2 != 0x5b {
+ w.lastbuf.WriteRune(c1)
+ w.lastbuf.WriteRune(c2)
+ continue
+ }
+
+ var buf bytes.Buffer
+ var m rune
+ for {
+ c, _, err := er.ReadRune()
+ if err != nil {
+ w.lastbuf.WriteRune(c1)
+ w.lastbuf.WriteRune(c2)
+ w.lastbuf.Write(buf.Bytes())
+ break loop
+ }
+ if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' {
+ m = c
+ break
+ }
+ buf.Write([]byte(string(c)))
+ }
+
+ var csbi consoleScreenBufferInfo
+ switch m {
+ case 'A':
+ n, err = strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+ csbi.cursorPosition.y -= short(n)
+ procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+ case 'B':
+ n, err = strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+ csbi.cursorPosition.y += short(n)
+ procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+ case 'C':
+ n, err = strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+ csbi.cursorPosition.x -= short(n)
+ procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+ case 'D':
+ n, err = strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ if n, err = strconv.Atoi(buf.String()); err == nil {
+ var csbi consoleScreenBufferInfo
+ procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+ csbi.cursorPosition.x += short(n)
+ procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+ }
+ case 'E':
+ n, err = strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+ csbi.cursorPosition.x = 0
+ csbi.cursorPosition.y += short(n)
+ procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+ case 'F':
+ n, err = strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+ csbi.cursorPosition.x = 0
+ csbi.cursorPosition.y -= short(n)
+ procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+ case 'G':
+ n, err = strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ procGetConsoleScreenBufferInfo.Call(uintptr(w.handle), uintptr(unsafe.Pointer(&csbi)))
+ csbi.cursorPosition.x = short(n)
+ procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+ case 'H':
+ token := strings.Split(buf.String(), ";")
+ if len(token) != 2 {
+ continue
+ }
+ n1, err := strconv.Atoi(token[0])
+ if err != nil {
+ continue
+ }
+ n2, err := strconv.Atoi(token[1])
+ if err != nil {
+ continue
+ }
+ csbi.cursorPosition.x = short(n2)
+ csbi.cursorPosition.x = short(n1)
+ procSetConsoleCursorPosition.Call(uintptr(w.handle), *(*uintptr)(unsafe.Pointer(&csbi.cursorPosition)))
+ case 'J':
+ n, err := strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ var cursor coord
+ switch n {
+ case 0:
+ cursor = coord{x: csbi.cursorPosition.x, y: csbi.cursorPosition.y}
+ case 1:
+ cursor = coord{x: csbi.window.left, y: csbi.window.top}
+ case 2:
+ cursor = coord{x: csbi.window.left, y: csbi.window.top}
+ }
+ var count, written dword
+ count = dword(csbi.size.x - csbi.cursorPosition.x + (csbi.size.y-csbi.cursorPosition.y)*csbi.size.x)
+ procFillConsoleOutputCharacter.Call(uintptr(w.handle), uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
+ procFillConsoleOutputAttribute.Call(uintptr(w.handle), uintptr(csbi.attributes), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
+ case 'K':
+ n, err := strconv.Atoi(buf.String())
+ if err != nil {
+ continue
+ }
+ var cursor coord
+ switch n {
+ case 0:
+ cursor = coord{x: csbi.cursorPosition.x, y: csbi.cursorPosition.y}
+ case 1:
+ cursor = coord{x: csbi.window.left, y: csbi.window.top + csbi.cursorPosition.y}
+ case 2:
+ cursor = coord{x: csbi.window.left, y: csbi.window.top + csbi.cursorPosition.y}
+ }
+ var count, written dword
+ count = dword(csbi.size.x - csbi.cursorPosition.x)
+ procFillConsoleOutputCharacter.Call(uintptr(w.handle), uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
+ procFillConsoleOutputAttribute.Call(uintptr(w.handle), uintptr(csbi.attributes), uintptr(count), *(*uintptr)(unsafe.Pointer(&cursor)), uintptr(unsafe.Pointer(&written)))
+ case 'm':
+ attr := csbi.attributes
+ cs := buf.String()
+ if cs == "" {
+ procSetConsoleTextAttribute.Call(uintptr(w.handle), uintptr(w.oldattr))
+ continue
+ }
+ token := strings.Split(cs, ";")
+ for i := 0; i < len(token); i += 1 {
+ ns := token[i]
+ if n, err = strconv.Atoi(ns); err == nil {
+ switch {
+ case n == 0 || n == 100:
+ attr = w.oldattr
+ case 1 <= n && n <= 5:
+ attr |= foregroundIntensity
+ case n == 7:
+ attr = ((attr & foregroundMask) << 4) | ((attr & backgroundMask) >> 4)
+ case 22 == n || n == 25 || n == 25:
+ attr |= foregroundIntensity
+ case n == 27:
+ attr = ((attr & foregroundMask) << 4) | ((attr & backgroundMask) >> 4)
+ case 30 <= n && n <= 37:
+ attr = (attr & backgroundMask)
+ if (n-30)&1 != 0 {
+ attr |= foregroundRed
+ }
+ if (n-30)&2 != 0 {
+ attr |= foregroundGreen
+ }
+ if (n-30)&4 != 0 {
+ attr |= foregroundBlue
+ }
+ case n == 38: // set foreground color.
+ if i < len(token)-2 && (token[i+1] == "5" || token[i+1] == "05") {
+ if n256, err := strconv.Atoi(token[i+2]); err == nil {
+ if n256foreAttr == nil {
+ n256setup()
+ }
+ attr &= backgroundMask
+ attr |= n256foreAttr[n256]
+ i += 2
+ }
+ } else {
+ attr = attr & (w.oldattr & backgroundMask)
+ }
+ case n == 39: // reset foreground color.
+ attr &= backgroundMask
+ attr |= w.oldattr & foregroundMask
+ case 40 <= n && n <= 47:
+ attr = (attr & foregroundMask)
+ if (n-40)&1 != 0 {
+ attr |= backgroundRed
+ }
+ if (n-40)&2 != 0 {
+ attr |= backgroundGreen
+ }
+ if (n-40)&4 != 0 {
+ attr |= backgroundBlue
+ }
+ case n == 48: // set background color.
+ if i < len(token)-2 && token[i+1] == "5" {
+ if n256, err := strconv.Atoi(token[i+2]); err == nil {
+ if n256backAttr == nil {
+ n256setup()
+ }
+ attr &= foregroundMask
+ attr |= n256backAttr[n256]
+ i += 2
+ }
+ } else {
+ attr = attr & (w.oldattr & foregroundMask)
+ }
+ case n == 49: // reset foreground color.
+ attr &= foregroundMask
+ attr |= w.oldattr & backgroundMask
+ case 90 <= n && n <= 97:
+ attr = (attr & backgroundMask)
+ attr |= foregroundIntensity
+ if (n-90)&1 != 0 {
+ attr |= foregroundRed
+ }
+ if (n-90)&2 != 0 {
+ attr |= foregroundGreen
+ }
+ if (n-90)&4 != 0 {
+ attr |= foregroundBlue
+ }
+ case 100 <= n && n <= 107:
+ attr = (attr & foregroundMask)
+ attr |= backgroundIntensity
+ if (n-100)&1 != 0 {
+ attr |= backgroundRed
+ }
+ if (n-100)&2 != 0 {
+ attr |= backgroundGreen
+ }
+ if (n-100)&4 != 0 {
+ attr |= backgroundBlue
+ }
+ }
+ procSetConsoleTextAttribute.Call(uintptr(w.handle), uintptr(attr))
+ }
+ }
+ }
+ }
+ return len(data) - w.lastbuf.Len(), nil
+}
+
+type consoleColor struct {
+ rgb int
+ red bool
+ green bool
+ blue bool
+ intensity bool
+}
+
+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 color16 = []consoleColor{
+ consoleColor{0x000000, false, false, false, false},
+ consoleColor{0x000080, false, false, true, false},
+ consoleColor{0x008000, false, true, false, false},
+ consoleColor{0x008080, false, true, true, false},
+ consoleColor{0x800000, true, false, false, false},
+ consoleColor{0x800080, true, false, true, false},
+ consoleColor{0x808000, true, true, false, false},
+ consoleColor{0xc0c0c0, true, true, true, false},
+ consoleColor{0x808080, false, false, false, true},
+ consoleColor{0x0000ff, false, false, true, true},
+ consoleColor{0x00ff00, false, true, false, true},
+ consoleColor{0x00ffff, false, true, true, true},
+ consoleColor{0xff0000, true, false, false, true},
+ consoleColor{0xff00ff, true, false, true, true},
+ consoleColor{0xffff00, true, true, false, true},
+ consoleColor{0xffffff, true, true, true, true},
+}
+
+type hsv struct {
+ h, s, v float32
+}
+
+func (a hsv) dist(b hsv) float32 {
+ dh := a.h - b.h
+ switch {
+ case dh > 0.5:
+ dh = 1 - dh
+ case dh < -0.5:
+ dh = -1 - dh
+ }
+ ds := a.s - b.s
+ dv := a.v - b.v
+ return float32(math.Sqrt(float64(dh*dh + ds*ds + dv*dv)))
+}
+
+func toHSV(rgb int) hsv {
+ r, g, b := float32((rgb&0xFF0000)>>16)/256.0,
+ float32((rgb&0x00FF00)>>8)/256.0,
+ float32(rgb&0x0000FF)/256.0
+ min, max := minmax3f(r, g, b)
+ h := max - min
+ if h > 0 {
+ if max == r {
+ h = (g - b) / h
+ if h < 0 {
+ h += 6
+ }
+ } else if max == g {
+ h = 2 + (b-r)/h
+ } else {
+ h = 4 + (r-g)/h
+ }
+ }
+ h /= 6.0
+ s := max - min
+ if max != 0 {
+ s /= max
+ }
+ v := max
+ return hsv{h: h, s: s, v: v}
+}
+
+type hsvTable []hsv
+
+func toHSVTable(rgbTable []consoleColor) hsvTable {
+ t := make(hsvTable, len(rgbTable))
+ for i, c := range rgbTable {
+ t[i] = toHSV(c.rgb)
+ }
+ return t
+}
+
+func (t hsvTable) find(rgb int) consoleColor {
+ hsv := toHSV(rgb)
+ n := 7
+ l := float32(5.0)
+ for i, p := range t {
+ d := hsv.dist(p)
+ if d < l {
+ l, n = d, i
+ }
+ }
+ return color16[n]
+}
+
+func minmax3f(a, b, c float32) (min, max float32) {
+ if a < b {
+ if b < c {
+ return a, c
+ } else if a < c {
+ return a, b
+ } else {
+ return c, b
+ }
+ } else {
+ if a < c {
+ return b, c
+ } else if b < c {
+ return b, a
+ } else {
+ return c, a
+ }
+ }
+}
+
+var n256foreAttr []word
+var n256backAttr []word
+
+func n256setup() {
+ n256foreAttr = make([]word, 256)
+ n256backAttr = make([]word, 256)
+ t := toHSVTable(color16)
+ for i, rgb := range color256 {
+ c := t.find(rgb)
+ n256foreAttr[i] = c.foregroundAttr()
+ n256backAttr[i] = c.backgroundAttr()
+ }
+}