prosody
7be8f649d97d
util/termcolours.lua

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util/termcolours.lua @ 8525:7be8f649d97d

mod_bosh: Return implicit 404 instead of the proper BOSH terminate thing
author Kim Alvefur <zash@zash.se>
date Wed, 27 Dec 2017 01:00:34 +0100
parent 8368:3629639d5fa9
child 8555:4f0f5b49bb03
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8 --
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9 -- luacheck: ignore 213/i
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10
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11
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12 local t_concat, t_insert = table.concat, table.insert;
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13 local char, format = string.char, string.format;
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14 local tonumber = tonumber;
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15 local ipairs = ipairs;
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16 local io_write = io.write;
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17 local m_floor = math.floor;
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18 local type = type;
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19 local setmetatable = setmetatable;
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20 local pairs = pairs;
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21
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22 local windows;
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23 if os.getenv("WINDIR") then
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24 windows = require "util.windows";
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25 end
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26 local orig_color = windows and windows.get_consolecolor and windows.get_consolecolor();
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27
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28 local _ENV = nil;
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29
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30 local stylemap = {
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31 reset = 0; bright = 1, dim = 2, underscore = 4, blink = 5, reverse = 7, hidden = 8;
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32 black = 30; red = 31; green = 32; yellow = 33; blue = 34; magenta = 35; cyan = 36; white = 37;
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33 ["black background"] = 40; ["red background"] = 41; ["green background"] = 42; ["yellow background"] = 43;
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34 ["blue background"] = 44; ["magenta background"] = 45; ["cyan background"] = 46; ["white background"] = 47;
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35 bold = 1, dark = 2, underline = 4, underlined = 4, normal = 0;
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36 }
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37
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38 local winstylemap = {
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39 ["0"] = orig_color, -- reset
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40 ["1"] = 7+8, -- bold
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41 ["1;33"] = 2+4+8, -- bold yellow
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42 ["1;31"] = 4+8 -- bold red
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43 }
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44
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45 local cssmap = {
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46 [1] = "font-weight: bold", [2] = "opacity: 0.5", [4] = "text-decoration: underline", [8] = "visibility: hidden",
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47 [30] = "color:black", [31] = "color:red", [32]="color:green", [33]="color:#FFD700",
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48 [34] = "color:blue", [35] = "color: magenta", [36] = "color:cyan", [37] = "color: white",
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49 [40] = "background-color:black", [41] = "background-color:red", [42]="background-color:green",
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50 [43]="background-color:yellow", [44] = "background-color:blue", [45] = "background-color: magenta",
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51 [46] = "background-color:cyan", [47] = "background-color: white";
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52 };
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53
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54 local fmt_string = char(0x1B).."[%sm%s"..char(0x1B).."[0m";
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55 local function getstring(style, text)
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56 if style then
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57 return format(fmt_string, style, text);
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58 else
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59 return text;
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60 end
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61 end
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62
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63 local function gray(n)
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64 return m_floor(n*3/32)+0xe8;
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65 end
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66 local function color(r,g,b)
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67 if r == g and g == b then
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68 return gray(r);
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69 end
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70 r = m_floor(r*3/128);
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71 g = m_floor(g*3/128);
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72 b = m_floor(b*3/128);
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73 return 0x10 + ( r * 36 ) + ( g * 6 ) + ( b );
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74 end
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75 local function hex2rgb(hex)
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76 local r = tonumber(hex:sub(1,2),16);
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77 local g = tonumber(hex:sub(3,4),16);
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78 local b = tonumber(hex:sub(5,6),16);
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79 return r,g,b;
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80 end
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81
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82 setmetatable(stylemap, { __index = function(_, style)
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83 if type(style) == "string" and style:find("%x%x%x%x%x%x") == 1 then
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84 local g = style:sub(7) == " background" and "48;5;" or "38;5;";
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85 return g .. color(hex2rgb(style));
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86 end
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87 end } );
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88
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89 local csscolors = {
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90 red = "ff0000"; fuchsia = "ff00ff"; green = "008000"; white = "ffffff";
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91 lime = "00ff00"; yellow = "ffff00"; purple = "800080"; blue = "0000ff";
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92 aqua = "00ffff"; olive = "808000"; black = "000000"; navy = "000080";
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93 teal = "008080"; silver = "c0c0c0"; maroon = "800000"; gray = "808080";
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94 }
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95 for colorname, rgb in pairs(csscolors) do
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96 stylemap[colorname] = stylemap[colorname] or stylemap[rgb];
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97 colorname, rgb = colorname .. " background", rgb .. " background"
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98 stylemap[colorname] = stylemap[colorname] or stylemap[rgb];
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99 end
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100
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101 local function getstyle(...)
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102 local styles, result = { ... }, {};
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103 for i, style in ipairs(styles) do
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104 style = stylemap[style];
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105 if style then
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106 t_insert(result, style);
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107 end
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108 end
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109 return t_concat(result, ";");
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110 end
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111
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112 local last = "0";
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113 local function setstyle(style)
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114 style = style or "0";
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115 if style ~= last then
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116 io_write("\27["..style.."m");
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117 last = style;
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118 end
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119 end
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120
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121 if windows then
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122 function setstyle(style)
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123 style = style or "0";
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124 if style ~= last then
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125 windows.set_consolecolor(winstylemap[style] or orig_color);
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126 last = style;
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127 end
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128 end
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129 if not orig_color then
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130 function setstyle() end
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131 end
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132 end
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133
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134 local function ansi2css(ansi_codes)
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135 if ansi_codes == "0" then return "</span>"; end
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136 local css = {};
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137 for code in ansi_codes:gmatch("[^;]+") do
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138 t_insert(css, cssmap[tonumber(code)]);
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139 end
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140 return "</span><span style='"..t_concat(css, ";").."'>";
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141 end
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142
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143 local function tohtml(input)
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144 return input:gsub("\027%[(.-)m", ansi2css);
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145 end
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146
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147 return {
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148 getstring = getstring;
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149 getstyle = getstyle;
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150 setstyle = setstyle;
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151 tohtml = tohtml;
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152 };