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1#!/usr/bin/env python
2
3import math, os, sys
4
5webcolors = {
6"indianred": "#cd5c5c",
7"lightcoral": "#f08080",
8"salmon": "#fa8072",
9"darksalmon": "#e9967a",
10"lightsalmon": "#ffa07a",
11"red": "#ff0000",
12"crimson": "#dc143c",
13"firebrick": "#b22222",
14"darkred": "#8b0000",
15"pink": "#ffc0cb",
16"lightpink": "#ffb6c1",
17"hotpink": "#ff69b4",
18"deeppink": "#ff1493",
19"mediumvioletred": "#c71585",
20"palevioletred": "#db7093",
21"lightsalmon": "#ffa07a",
22"coral": "#ff7f50",
23"tomato": "#ff6347",
24"orangered": "#ff4500",
25"darkorange": "#ff8c00",
26"orange": "#ffa500",
27"gold": "#ffd700",
28"yellow": "#ffff00",
29"lightyellow": "#ffffe0",
30"lemonchiffon": "#fffacd",
31"lightgoldenrodyellow": "#fafad2",
32"papayawhip": "#ffefd5",
33"moccasin": "#ffe4b5",
34"peachpuff": "#ffdab9",
35"palegoldenrod": "#eee8aa",
36"khaki": "#f0e68c",
37"darkkhaki": "#bdb76b",
38"lavender": "#e6e6fa",
39"thistle": "#d8bfd8",
40"plum": "#dda0dd",
41"violet": "#ee82ee",
42"orchid": "#da70d6",
43"fuchsia": "#ff00ff",
44"magenta": "#ff00ff",
45"mediumorchid": "#ba55d3",
46"mediumpurple": "#9370db",
47"blueviolet": "#8a2be2",
48"darkviolet": "#9400d3",
49"darkorchid": "#9932cc",
50"darkmagenta": "#8b008b",
51"purple": "#800080",
52"indigo": "#4b0082",
53"darkslateblue": "#483d8b",
54"slateblue": "#6a5acd",
55"mediumslateblue": "#7b68ee",
56"greenyellow": "#adff2f",
57"chartreuse": "#7fff00",
58"lawngreen": "#7cfc00",
59"lime": "#00ff00",
60"limegreen": "#32cd32",
61"palegreen": "#98fb98",
62"lightgreen": "#90ee90",
63"mediumspringgreen": "#00fa9a",
64"springgreen": "#00ff7f",
65"mediumseagreen": "#3cb371",
66"seagreen": "#2e8b57",
67"forestgreen": "#228b22",
68"green": "#008000",
69"darkgreen": "#006400",
70"yellowgreen": "#9acd32",
71"olivedrab": "#6b8e23",
72"olive": "#808000",
73"darkolivegreen": "#556b2f",
74"mediumaquamarine": "#66cdaa",
75"darkseagreen": "#8fbc8f",
76"lightseagreen": "#20b2aa",
77"darkcyan": "#008b8b",
78"teal": "#008080",
79"aqua": "#00ffff",
80"cyan": "#00ffff",
81"lightcyan": "#e0ffff",
82"paleturquoise": "#afeeee",
83"aquamarine": "#7fffd4",
84"turquoise": "#40e0d0",
85"mediumturquoise": "#48d1cc",
86"darkturquoise": "#00ced1",
87"cadetblue": "#5f9ea0",
88"steelblue": "#4682b4",
89"lightsteelblue": "#b0c4de",
90"powderblue": "#b0e0e6",
91"lightblue": "#add8e6",
92"skyblue": "#87ceeb",
93"lightskyblue": "#87cefa",
94"deepskyblue": "#00bfff",
95"dodgerblue": "#1e90ff",
96"cornflowerblue": "#6495ed",
97"royalblue": "#4169e1",
98"blue": "#0000ff",
99"mediumblue": "#0000cd",
100"darkblue": "#00008b",
101"navy": "#000080",
102"midnightblue": "#191970",
103"cornsilk": "#fff8dc",
104"blanchedalmond": "#ffebcd",
105"bisque": "#ffe4c4",
106"navajowhite": "#ffdead",
107"wheat": "#f5deb3",
108"burlywood": "#deb887",
109"tan": "#d2b48c",
110"rosybrown": "#bc8f8f",
111"sandybrown": "#f4a460",
112"goldenrod": "#daa520",
113"darkgoldenrod": "#b8860b",
114"peru": "#cd853f",
115"chocolate": "#d2691e",
116"saddlebrown": "#8b4513",
117"sienna": "#a0522d",
118"brown": "#a52a2a",
119"maroon": "#800000",
120"white": "#ffffff",
121"snow": "#fffafa",
122"honeydew": "#f0fff0",
123"mintcream": "#f5fffa",
124"azure": "#f0ffff",
125"aliceblue": "#f0f8ff",
126"ghostwhite": "#f8f8ff",
127"whitesmoke": "#f5f5f5",
128"seashell": "#fff5ee",
129"beige": "#f5f5dc",
130"oldlace": "#fdf5e6",
131"floralwhite": "#fffaf0",
132"ivory": "#fffff0",
133"antiquewhite": "#faebd7",
134"linen": "#faf0e6",
135"lavenderblush": "#fff0f5",
136"mistyrose": "#ffe4e1",
137"gainsboro": "#dcdcdc",
138"lightgrey": "#d3d3d3",
139"silver": "#c0c0c0",
140"darkgray": "#a9a9a9",
141"gray": "#808080",
142"dimgray": "#696969",
143"lightslategray": "#778899",
144"slategray": "#708090",
145"darkslategray": "#2f4f4f",
146"black": "#000000",
147}
148
149if os.name == "nt":
150    consoleColors = [
151    "#000000",  #{   0,   0,   0 },//0 - black
152    "#000080",  #{   0,   0, 128 },//1 - navy
153    "#008000",  #{   0, 128,   0 },//2 - green
154    "#008080",  #{   0, 128, 128 },//3 - teal
155    "#800000",  #{ 128,   0,   0 },//4 - maroon
156    "#800080",  #{ 128,   0, 128 },//5 - purple
157    "#808000",  #{ 128, 128,   0 },//6 - olive
158    "#C0C0C0",  #{ 192, 192, 192 },//7 - silver
159    "#808080",  #{ 128, 128, 128 },//8 - gray
160    "#0000FF",  #{   0,   0, 255 },//9 - blue
161    "#00FF00",  #{   0, 255,   0 },//a - lime
162    "#00FFFF",  #{   0, 255, 255 },//b - cyan
163    "#FF0000",  #{ 255,   0,   0 },//c - red
164    "#FF00FF",  #{ 255,   0, 255 },//d - magenta
165    "#FFFF00",  #{ 255, 255,   0 },//e - yellow
166    "#FFFFFF",  #{ 255, 255, 255 } //f - white
167    ]
168else:
169    consoleColors = [
170    "#2e3436",
171    "#cc0000",
172    "#4e9a06",
173    "#c4a000",
174    "#3465a4",
175    "#75507b",
176    "#06989a",
177    "#d3d7cf",
178    "#ffffff",
179
180    "#555753",
181    "#ef2929",
182    "#8ae234",
183    "#fce94f",
184    "#729fcf",
185    "#ad7fa8",
186    "#34e2e2",
187    "#eeeeec",
188    ]
189
190def RGB2LAB(r,g,b):
191    if max(r,g,b):
192        r /= 255.
193        g /= 255.
194        b /= 255.
195
196    X = (0.412453 * r + 0.357580 * g + 0.180423 * b) / 0.950456
197    Y = (0.212671 * r + 0.715160 * g + 0.072169 * b)
198    Z = (0.019334 * r + 0.119193 * g + 0.950227 * b) / 1.088754
199
200    #[X * 0.950456]   [0.412453 0.357580 0.180423]   [R]
201    #[Y           ] = [0.212671 0.715160 0.072169] * [G]
202    #[Z * 1.088754]   [0.019334 0.119193 0.950227]   [B]
203
204    T = 0.008856 #threshold
205
206    if X > T:
207        fX = math.pow(X, 1./3.)
208    else:
209        fX = 7.787 * X + 16./116.
210
211    # Compute L
212    if Y > T:
213        Y3 = math.pow(Y, 1./3.)
214        fY = Y3
215        L  = 116. * Y3 - 16.0
216    else:
217        fY = 7.787 * Y + 16./116.
218        L  = 903.3 * Y
219
220    if Z > T:
221        fZ = math.pow(Z, 1./3.)
222    else:
223        fZ = 7.787 * Z + 16./116.
224
225    # Compute a and b
226    a = 500. * (fX - fY)
227    b = 200. * (fY - fZ)
228
229    return (L,a,b)
230
231def colorDistance(r1,g1,b1 = None, r2 = None, g2 = None,b2 = None):
232    if type(r1) == tuple and type(g1) == tuple and b1 is None and r2 is None and g2 is None and b2 is None:
233        (l1,a1,b1) = RGB2LAB(*r1)
234        (l2,a2,b2) = RGB2LAB(*g1)
235    else:
236        (l1,a1,b1) = RGB2LAB(r1,g1,b1)
237        (l2,a2,b2) = RGB2LAB(r2,g2,b2)
238    #CIE94
239    dl = l1-l2
240    C1 = math.sqrt(a1*a1 + b1*b1)
241    C2 = math.sqrt(a2*a2 + b2*b2)
242    dC = C1 - C2
243    da = a1-a2
244    db = b1-b2
245    dH = math.sqrt(max(0, da*da + db*db - dC*dC))
246    Kl = 1
247    K1 = 0.045
248    K2 = 0.015
249
250    s1 = dl/Kl
251    s2 = dC/(1. + K1 * C1)
252    s3 = dH/(1. + K2 * C1)
253    return math.sqrt(s1*s1 + s2*s2 + s3*s3)
254
255def parseHexColor(col):
256    if len(col) != 4 and len(col) != 7 and not col.startswith("#"):
257        return (0,0,0)
258    if len(col) == 4:
259        r = col[1]*2
260        g = col[2]*2
261        b = col[3]*2
262    else:
263        r = col[1:3]
264        g = col[3:5]
265        b = col[5:7]
266    return (int(r,16), int(g,16), int(b,16))
267
268def getColor(col):
269    if isinstance(col, str):
270        if col.lower() in webcolors:
271            return parseHexColor(webcolors[col.lower()])
272        else:
273            return parseHexColor(col)
274    else:
275        return col
276
277def getNearestConsoleColor(col):
278    color = getColor(col)
279    minidx = 0
280    mindist = colorDistance(color, getColor(consoleColors[0]))
281    for i in range(len(consoleColors)):
282        dist = colorDistance(color, getColor(consoleColors[i]))
283        if dist < mindist:
284            mindist = dist
285            minidx = i
286    return minidx
287
288if os.name == 'nt':
289    import msvcrt
290    from ctypes import windll, Structure, c_short, c_ushort, byref
291    SHORT = c_short
292    WORD = c_ushort
293
294    class COORD(Structure):
295        _fields_ = [
296            ("X", SHORT),
297            ("Y", SHORT)]
298
299    class SMALL_RECT(Structure):
300        _fields_ = [
301            ("Left", SHORT),
302            ("Top", SHORT),
303            ("Right", SHORT),
304            ("Bottom", SHORT)]
305
306    class CONSOLE_SCREEN_BUFFER_INFO(Structure):
307        _fields_ = [
308            ("dwSize", COORD),
309            ("dwCursorPosition", COORD),
310            ("wAttributes", WORD),
311            ("srWindow", SMALL_RECT),
312            ("dwMaximumWindowSize", COORD)]
313
314    class winConsoleColorizer(object):
315        def __init__(self, stream):
316            self.handle = msvcrt.get_osfhandle(stream.fileno())
317            self.default_attrs = 7#self.get_text_attr()
318            self.stream = stream
319
320        def get_text_attr(self):
321            csbi = CONSOLE_SCREEN_BUFFER_INFO()
322            windll.kernel32.GetConsoleScreenBufferInfo(self.handle, byref(csbi))
323            return csbi.wAttributes
324
325        def set_text_attr(self, color):
326            windll.kernel32.SetConsoleTextAttribute(self.handle, color)
327
328        def write(self, *text, **attrs):
329            if not text:
330                return
331            color = attrs.get("color", None)
332            if color:
333                col = getNearestConsoleColor(color)
334                self.stream.flush()
335                self.set_text_attr(col)
336            self.stream.write(" ".join([str(t) for t in text]))
337            if color:
338                self.stream.flush()
339                self.set_text_attr(self.default_attrs)
340
341class dummyColorizer(object):
342    def __init__(self, stream):
343        self.stream = stream
344
345    def write(self, *text, **attrs):
346        if text:
347            self.stream.write(" ".join([str(t) for t in text]))
348
349class asciiSeqColorizer(object):
350    RESET_SEQ = "\033[0m"
351    #BOLD_SEQ = "\033[1m"
352    ITALIC_SEQ = "\033[3m"
353    UNDERLINE_SEQ = "\033[4m"
354    STRIKEOUT_SEQ = "\033[9m"
355    COLOR_SEQ0 = "\033[00;%dm" #dark
356    COLOR_SEQ1 = "\033[01;%dm" #bold and light
357
358    def __init__(self, stream):
359        self.stream = stream
360
361    def get_seq(self, code):
362        if code > 8:
363            return self.__class__.COLOR_SEQ1 % (30 + code - 9)
364        else:
365            return self.__class__.COLOR_SEQ0 % (30 + code)
366
367    def write(self, *text, **attrs):
368        if not text:
369            return
370        color = attrs.get("color", None)
371        if color:
372            col = getNearestConsoleColor(color)
373            self.stream.write(self.get_seq(col))
374        self.stream.write(" ".join([str(t) for t in text]))
375        if color:
376            self.stream.write(self.__class__.RESET_SEQ)
377
378
379def getColorizer(stream):
380    if stream.isatty():
381        if os.name == "nt":
382            return winConsoleColorizer(stream)
383        else:
384            return asciiSeqColorizer(stream)
385    else:
386        return dummyColorizer(stream)
387