annotate sat_frontends/tools/css_color.py @ 3598:d390ff50af0f

plugin XEP-0277: pubsub cache analyser implementation
author Goffi <goffi@goffi.org>
date Thu, 29 Jul 2021 22:51:01 +0200
parents be6d91572633
children 4b842c1fb686
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1 #!/usr/bin/env python3
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2
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3
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4 # CSS color parsing
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5 # Copyright (C) 2009-2021 Jérome-Poisson
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.log import getLogger
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21
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22 log = getLogger(__name__)
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25 CSS_COLORS = {
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26 "black": "000000",
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27 "silver": "c0c0c0",
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28 "gray": "808080",
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29 "white": "ffffff",
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30 "maroon": "800000",
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31 "red": "ff0000",
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32 "purple": "800080",
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33 "fuchsia": "ff00ff",
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34 "green": "008000",
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35 "lime": "00ff00",
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36 "olive": "808000",
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37 "yellow": "ffff00",
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38 "navy": "000080",
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39 "blue": "0000ff",
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40 "teal": "008080",
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41 "aqua": "00ffff",
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42 "orange": "ffa500",
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43 "aliceblue": "f0f8ff",
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44 "antiquewhite": "faebd7",
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45 "aquamarine": "7fffd4",
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46 "azure": "f0ffff",
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47 "beige": "f5f5dc",
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48 "bisque": "ffe4c4",
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49 "blanchedalmond": "ffebcd",
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50 "blueviolet": "8a2be2",
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51 "brown": "a52a2a",
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52 "burlywood": "deb887",
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53 "cadetblue": "5f9ea0",
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54 "chartreuse": "7fff00",
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55 "chocolate": "d2691e",
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56 "coral": "ff7f50",
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57 "cornflowerblue": "6495ed",
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58 "cornsilk": "fff8dc",
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59 "crimson": "dc143c",
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60 "darkblue": "00008b",
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61 "darkcyan": "008b8b",
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62 "darkgoldenrod": "b8860b",
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63 "darkgray": "a9a9a9",
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64 "darkgreen": "006400",
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65 "darkgrey": "a9a9a9",
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66 "darkkhaki": "bdb76b",
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67 "darkmagenta": "8b008b",
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68 "darkolivegreen": "556b2f",
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69 "darkorange": "ff8c00",
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70 "darkorchid": "9932cc",
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71 "darkred": "8b0000",
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72 "darksalmon": "e9967a",
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73 "darkseagreen": "8fbc8f",
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74 "darkslateblue": "483d8b",
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75 "darkslategray": "2f4f4f",
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76 "darkslategrey": "2f4f4f",
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77 "darkturquoise": "00ced1",
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78 "darkviolet": "9400d3",
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79 "deeppink": "ff1493",
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80 "deepskyblue": "00bfff",
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81 "dimgray": "696969",
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82 "dimgrey": "696969",
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83 "dodgerblue": "1e90ff",
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84 "firebrick": "b22222",
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85 "floralwhite": "fffaf0",
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86 "forestgreen": "228b22",
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87 "gainsboro": "dcdcdc",
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88 "ghostwhite": "f8f8ff",
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89 "gold": "ffd700",
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90 "goldenrod": "daa520",
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91 "greenyellow": "adff2f",
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92 "grey": "808080",
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93 "honeydew": "f0fff0",
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94 "hotpink": "ff69b4",
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95 "indianred": "cd5c5c",
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96 "indigo": "4b0082",
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97 "ivory": "fffff0",
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98 "khaki": "f0e68c",
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99 "lavender": "e6e6fa",
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100 "lavenderblush": "fff0f5",
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101 "lawngreen": "7cfc00",
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102 "lemonchiffon": "fffacd",
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103 "lightblue": "add8e6",
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104 "lightcoral": "f08080",
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105 "lightcyan": "e0ffff",
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106 "lightgoldenrodyellow": "fafad2",
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107 "lightgray": "d3d3d3",
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108 "lightgreen": "90ee90",
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109 "lightgrey": "d3d3d3",
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110 "lightpink": "ffb6c1",
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111 "lightsalmon": "ffa07a",
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112 "lightseagreen": "20b2aa",
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113 "lightskyblue": "87cefa",
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114 "lightslategray": "778899",
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115 "lightslategrey": "778899",
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116 "lightsteelblue": "b0c4de",
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117 "lightyellow": "ffffe0",
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118 "limegreen": "32cd32",
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119 "linen": "faf0e6",
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120 "mediumaquamarine": "66cdaa",
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121 "mediumblue": "0000cd",
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122 "mediumorchid": "ba55d3",
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123 "mediumpurple": "9370db",
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124 "mediumseagreen": "3cb371",
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125 "mediumslateblue": "7b68ee",
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126 "mediumspringgreen": "00fa9a",
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127 "mediumturquoise": "48d1cc",
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128 "mediumvioletred": "c71585",
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129 "midnightblue": "191970",
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130 "mintcream": "f5fffa",
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131 "mistyrose": "ffe4e1",
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132 "moccasin": "ffe4b5",
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133 "navajowhite": "ffdead",
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134 "oldlace": "fdf5e6",
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135 "olivedrab": "6b8e23",
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136 "orangered": "ff4500",
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137 "orchid": "da70d6",
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138 "palegoldenrod": "eee8aa",
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139 "palegreen": "98fb98",
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140 "paleturquoise": "afeeee",
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141 "palevioletred": "db7093",
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142 "papayawhip": "ffefd5",
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143 "peachpuff": "ffdab9",
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144 "peru": "cd853f",
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145 "pink": "ffc0cb",
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146 "plum": "dda0dd",
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147 "powderblue": "b0e0e6",
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148 "rosybrown": "bc8f8f",
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149 "royalblue": "4169e1",
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150 "saddlebrown": "8b4513",
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151 "salmon": "fa8072",
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152 "sandybrown": "f4a460",
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153 "seagreen": "2e8b57",
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154 "seashell": "fff5ee",
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Goffi <goffi@goffi.org>
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155 "sienna": "a0522d",
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Goffi <goffi@goffi.org>
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156 "skyblue": "87ceeb",
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Goffi <goffi@goffi.org>
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157 "slateblue": "6a5acd",
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158 "slategray": "708090",
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159 "slategrey": "708090",
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Goffi <goffi@goffi.org>
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160 "snow": "fffafa",
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Goffi <goffi@goffi.org>
parents: 2771
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161 "springgreen": "00ff7f",
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Goffi <goffi@goffi.org>
parents: 2771
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162 "steelblue": "4682b4",
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Goffi <goffi@goffi.org>
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163 "tan": "d2b48c",
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Goffi <goffi@goffi.org>
parents: 2771
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164 "thistle": "d8bfd8",
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Goffi <goffi@goffi.org>
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165 "tomato": "ff6347",
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Goffi <goffi@goffi.org>
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166 "turquoise": "40e0d0",
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Goffi <goffi@goffi.org>
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167 "violet": "ee82ee",
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Goffi <goffi@goffi.org>
parents: 2771
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168 "wheat": "f5deb3",
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parents: 2771
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169 "whitesmoke": "f5f5f5",
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170 "yellowgreen": "9acd32",
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171 "rebeccapurple": "663399",
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172 }
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173 DEFAULT = "000000"
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174
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parents:
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175
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176 def parse(raw_value, as_string=True):
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177 """parse CSS color value and return normalised value
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178
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179 @param raw_value(unicode): CSS value
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180 @param as_string(bool): if True return a string,
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181 else return a tuple of int
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182 @return (unicode, tuple): normalised value
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183 if as_string is True, value is 3 or 4 hex words (e.g. u"ff00aabb")
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184 else value is a 3 or 4 tuple of int (e.g.: (255, 0, 170, 187)).
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185 If present, the 4th value is the alpha channel
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186 If value can't be parsed, a warning message is logged, and DEFAULT is returned
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187 """
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188 raw_value = raw_value.strip().lower()
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189 if raw_value.startswith("#"):
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190 # we have a hexadecimal value
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191 str_value = raw_value[1:]
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192 if len(raw_value) in (3, 4):
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193 str_value = "".join([2 * v for v in str_value])
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194 elif raw_value.startswith("rgb"):
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195 left_p = raw_value.find("(")
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196 right_p = raw_value.find(")")
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197 rgb_values = [v.strip() for v in raw_value[left_p + 1 : right_p].split(",")]
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198 expected_len = 4 if raw_value.startswith("rgba") else 3
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199 if len(rgb_values) != expected_len:
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200 log.warning("incorrect value: {}".format(raw_value))
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201 str_value = DEFAULT
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202 else:
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203 int_values = []
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204 for rgb_v in rgb_values:
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205 p_idx = rgb_v.find("%")
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206 if p_idx == -1:
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207 # base 10 value
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208 try:
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209 int_v = int(rgb_v)
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210 if int_v > 255:
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211 raise ValueError("value exceed 255")
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212 int_values.append(int_v)
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213 except ValueError:
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214 log.warning("invalid int: {}".format(rgb_v))
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215 int_values.append(0)
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216 else:
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217 # percentage
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Goffi <goffi@goffi.org>
parents:
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218 try:
95ad70ad815c frontends (tools): added a module to parse CSS colors
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219 int_v = int(int(rgb_v[:p_idx]) / 100.0 * 255)
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220 if int_v > 255:
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221 raise ValueError("value exceed 255")
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222 int_values.append(int_v)
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parents:
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223 except ValueError:
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parents: 2771
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224 log.warning("invalid percent value: {}".format(rgb_v))
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225 int_values.append(0)
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226 str_value = "".join(["{:02x}".format(v) for v in int_values])
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parents: 2771
diff changeset
227 elif raw_value.startswith("hsl"):
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parents: 2771
diff changeset
228 log.warning("hue-saturation-lightness not handled yet") # TODO
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229 str_value = DEFAULT
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Goffi <goffi@goffi.org>
parents:
diff changeset
230 else:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
231 try:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
232 str_value = CSS_COLORS[raw_value]
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Goffi <goffi@goffi.org>
parents:
diff changeset
233 except KeyError:
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Goffi <goffi@goffi.org>
parents: 2771
diff changeset
234 log.warning("unrecognised format: {}".format(raw_value))
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Goffi <goffi@goffi.org>
parents:
diff changeset
235 str_value = DEFAULT
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
236
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
237 if as_string:
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
238 return str_value
95ad70ad815c frontends (tools): added a module to parse CSS colors
Goffi <goffi@goffi.org>
parents:
diff changeset
239 else:
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parents: 2562
diff changeset
240 return tuple(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
241 [
56f94936df1e code style reformatting using black
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parents: 2562
diff changeset
242 int(str_value[i] + str_value[i + 1], 16)
3028
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Goffi <goffi@goffi.org>
parents: 2771
diff changeset
243 for i in range(0, len(str_value), 2)
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parents: 2562
diff changeset
244 ]
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
245 )