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util/termcolours.lua @ 7410:45f543c82893
MUC: Split out handling of the room-creating presence into its own method
author | Kim Alvefur <zash@zash.se> |
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date | Thu, 28 Apr 2016 22:57:02 +0200 |
parent | 7206:1c005878db55 |
child | 8368:3629639d5fa9 |
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 -- |
758 | 5 -- This project is MIT/X11 licensed. Please see the |
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 |
262 | 12 local t_concat, t_insert = table.concat, table.insert; |
13 local char, format = string.char, string.format; | |
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14 local tonumber = tonumber; |
262 | 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; |
262 | 29 |
30 local stylemap = { | |
31 reset = 0; bright = 1, dim = 2, underscore = 4, blink = 5, reverse = 7, hidden = 8; | |
32 black = 30; red = 31; green = 32; yellow = 33; blue = 34; magenta = 35; cyan = 36; white = 37; | |
33 ["black background"] = 40; ["red background"] = 41; ["green background"] = 42; ["yellow background"] = 43; ["blue background"] = 44; ["magenta background"] = 45; ["cyan background"] = 46; ["white background"] = 47; | |
34 bold = 1, dark = 2, underline = 4, underlined = 4, normal = 0; | |
35 } | |
36 | |
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37 local winstylemap = { |
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38 ["0"] = orig_color, -- reset |
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39 ["1"] = 7+8, -- bold |
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40 ["1;33"] = 2+4+8, -- bold yellow |
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41 ["1;31"] = 4+8 -- bold red |
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42 } |
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43 |
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44 local cssmap = { |
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45 [1] = "font-weight: bold", [2] = "opacity: 0.5", [4] = "text-decoration: underline", [8] = "visibility: hidden", |
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46 [30] = "color:black", [31] = "color:red", [32]="color:green", [33]="color:#FFD700", |
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47 [34] = "color:blue", [35] = "color: magenta", [36] = "color:cyan", [37] = "color: white", |
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48 [40] = "background-color:black", [41] = "background-color:red", [42]="background-color:green", |
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49 [43]="background-color:yellow", [44] = "background-color:blue", [45] = "background-color: magenta", |
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50 [46] = "background-color:cyan", [47] = "background-color: white"; |
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51 }; |
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52 |
262 | 53 local fmt_string = char(0x1B).."[%sm%s"..char(0x1B).."[0m"; |
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54 local function getstring(style, text) |
262 | 55 if style then |
56 return format(fmt_string, style, text); | |
57 else | |
58 return text; | |
59 end | |
60 end | |
61 | |
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62 local function gray(n) |
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63 return m_floor(n*3/32)+0xe8; |
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64 end |
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65 local function color(r,g,b) |
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66 if r == g and g == b then |
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67 return gray(r); |
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68 end |
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69 r = m_floor(r*3/128); |
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70 g = m_floor(g*3/128); |
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71 b = m_floor(b*3/128); |
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72 return 0x10 + ( r * 36 ) + ( g * 6 ) + ( b ); |
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73 end |
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74 local function hex2rgb(hex) |
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75 local r = tonumber(hex:sub(1,2),16); |
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76 local g = tonumber(hex:sub(3,4),16); |
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77 local b = tonumber(hex:sub(5,6),16); |
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78 return r,g,b; |
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79 end |
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80 |
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81 setmetatable(stylemap, { __index = function(_, style) |
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82 if type(style) == "string" and style:find("%x%x%x%x%x%x") == 1 then |
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83 local g = style:sub(7) == " background" and "48;5;" or "38;5;"; |
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84 return g .. color(hex2rgb(style)); |
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85 end |
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86 end } ); |
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87 |
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88 local csscolors = { |
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89 red = "ff0000"; fuchsia = "ff00ff"; green = "008000"; white = "ffffff"; |
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90 lime = "00ff00"; yellow = "ffff00"; purple = "800080"; blue = "0000ff"; |
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91 aqua = "00ffff"; olive = "808000"; black = "000000"; navy = "000080"; |
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92 teal = "008080"; silver = "c0c0c0"; maroon = "800000"; gray = "808080"; |
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93 } |
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94 for colorname, rgb in pairs(csscolors) do |
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95 stylemap[colorname] = stylemap[colorname] or stylemap[rgb]; |
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96 colorname, rgb = colorname .. " background", rgb .. " background" |
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97 stylemap[colorname] = stylemap[colorname] or stylemap[rgb]; |
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98 end |
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99 |
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100 local function getstyle(...) |
262 | 101 local styles, result = { ... }, {}; |
102 for i, style in ipairs(styles) do | |
103 style = stylemap[style]; | |
104 if style then | |
105 t_insert(result, style); | |
106 end | |
107 end | |
108 return t_concat(result, ";"); | |
109 end | |
110 | |
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111 local last = "0"; |
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112 local function setstyle(style) |
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113 style = style or "0"; |
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114 if style ~= last then |
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115 io_write("\27["..style.."m"); |
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116 last = style; |
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117 end |
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118 end |
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119 |
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120 if windows then |
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121 function setstyle(style) |
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122 style = style or "0"; |
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123 if style ~= last then |
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124 windows.set_consolecolor(winstylemap[style] or orig_color); |
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125 last = style; |
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126 end |
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127 end |
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128 if not orig_color then |
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129 function setstyle() end |
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130 end |
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131 end |
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132 |
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133 local function ansi2css(ansi_codes) |
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134 if ansi_codes == "0" then return "</span>"; end |
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135 local css = {}; |
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136 for code in ansi_codes:gmatch("[^;]+") do |
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137 t_insert(css, cssmap[tonumber(code)]); |
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138 end |
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139 return "</span><span style='"..t_concat(css, ";").."'>"; |
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140 end |
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141 |
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142 local function tohtml(input) |
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143 return input:gsub("\027%[(.-)m", ansi2css); |
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144 end |
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145 |
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146 return { |
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147 getstring = getstring; |
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148 getstyle = getstyle; |
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149 setstyle = setstyle; |
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150 tohtml = tohtml; |
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151 }; |