prosody
755f705f126a
util/termcolours.lua

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util/termcolours.lua @ 5513:755f705f126a

util.adhoc: New util for generating common adhoc handler patterns
author Florian Zeitz <florob@babelmonkeys.de>
date Tue, 23 Apr 2013 14:49:31 +0200
parent 4698:739f7ae1a01e
child 5776:bd0ff8ae98a8
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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
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10 local t_concat, t_insert = table.concat, table.insert;
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11 local char, format = string.char, string.format;
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12 local tonumber = tonumber;
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13 local ipairs = ipairs;
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14 local io_write = io.write;
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15
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16 local windows;
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17 if os.getenv("WINDIR") then
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18 windows = require "util.windows";
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19 end
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20 local orig_color = windows and windows.get_consolecolor and windows.get_consolecolor();
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21
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22 module "termcolours"
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23
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24 local stylemap = {
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25 reset = 0; bright = 1, dim = 2, underscore = 4, blink = 5, reverse = 7, hidden = 8;
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26 black = 30; red = 31; green = 32; yellow = 33; blue = 34; magenta = 35; cyan = 36; white = 37;
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27 ["black background"] = 40; ["red background"] = 41; ["green background"] = 42; ["yellow background"] = 43; ["blue background"] = 44; ["magenta background"] = 45; ["cyan background"] = 46; ["white background"] = 47;
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28 bold = 1, dark = 2, underline = 4, underlined = 4, normal = 0;
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29 }
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30
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31 local winstylemap = {
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32 ["0"] = orig_color, -- reset
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33 ["1"] = 7+8, -- bold
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34 ["1;33"] = 2+4+8, -- bold yellow
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35 ["1;31"] = 4+8 -- bold red
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36 }
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37
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38 local cssmap = {
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39 [1] = "font-weight: bold", [2] = "opacity: 0.5", [4] = "text-decoration: underline", [8] = "visibility: hidden",
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40 [30] = "color:black", [31] = "color:red", [32]="color:green", [33]="color:#FFD700",
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41 [34] = "color:blue", [35] = "color: magenta", [36] = "color:cyan", [37] = "color: white",
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42 [40] = "background-color:black", [41] = "background-color:red", [42]="background-color:green",
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43 [43]="background-color:yellow", [44] = "background-color:blue", [45] = "background-color: magenta",
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44 [46] = "background-color:cyan", [47] = "background-color: white";
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45 };
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46
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47 local fmt_string = char(0x1B).."[%sm%s"..char(0x1B).."[0m";
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48 function getstring(style, text)
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49 if style then
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50 return format(fmt_string, style, text);
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51 else
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52 return text;
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53 end
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54 end
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55
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56 function getstyle(...)
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57 local styles, result = { ... }, {};
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58 for i, style in ipairs(styles) do
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59 style = stylemap[style];
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60 if style then
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61 t_insert(result, style);
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62 end
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63 end
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64 return t_concat(result, ";");
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65 end
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66
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67 local last = "0";
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68 function setstyle(style)
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69 style = style or "0";
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70 if style ~= last then
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71 io_write("\27["..style.."m");
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72 last = style;
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73 end
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74 end
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75
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76 if windows then
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77 function setstyle(style)
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78 style = style or "0";
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79 if style ~= last then
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80 windows.set_consolecolor(winstylemap[style] or orig_color);
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81 last = style;
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82 end
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83 end
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84 if not orig_color then
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85 function setstyle(style) end
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86 end
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87 end
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88
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89 local function ansi2css(ansi_codes)
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90 if ansi_codes == "0" then return "</span>"; end
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91 local css = {};
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92 for code in ansi_codes:gmatch("[^;]+") do
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93 t_insert(css, cssmap[tonumber(code)]);
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94 end
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95 return "</span><span style='"..t_concat(css, ";").."'>";
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96 end
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97
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98 function tohtml(input)
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99 return input:gsub("\027%[(.-)m", ansi2css);
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100 end
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101
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102 return _M;