prosody
48d167f652ad
util/termcolours.lua

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util/termcolours.lua @ 7198:48d167f652ad

util.termcolours: Silence luacheck warning
author Kim Alvefur <zash@zash.se>
date Thu, 25 Feb 2016 22:33:40 +0100
parent 6777:5de6b93d0190
child 7199:5846e0bca4ff
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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b1885732e979 GPL->MIT!
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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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48d167f652ad util.termcolours: Silence luacheck warning
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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
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18 local windows;
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19 if os.getenv("WINDIR") then
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20 windows = require "util.windows";
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21 end
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22 local orig_color = windows and windows.get_consolecolor and windows.get_consolecolor();
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23
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24 local _ENV = nil;
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25
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26 local stylemap = {
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27 reset = 0; bright = 1, dim = 2, underscore = 4, blink = 5, reverse = 7, hidden = 8;
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28 black = 30; red = 31; green = 32; yellow = 33; blue = 34; magenta = 35; cyan = 36; white = 37;
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29 ["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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30 bold = 1, dark = 2, underline = 4, underlined = 4, normal = 0;
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31 }
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32
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33 local winstylemap = {
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34 ["0"] = orig_color, -- reset
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35 ["1"] = 7+8, -- bold
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36 ["1;33"] = 2+4+8, -- bold yellow
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37 ["1;31"] = 4+8 -- bold red
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38 }
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39
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40 local cssmap = {
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41 [1] = "font-weight: bold", [2] = "opacity: 0.5", [4] = "text-decoration: underline", [8] = "visibility: hidden",
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42 [30] = "color:black", [31] = "color:red", [32]="color:green", [33]="color:#FFD700",
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43 [34] = "color:blue", [35] = "color: magenta", [36] = "color:cyan", [37] = "color: white",
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44 [40] = "background-color:black", [41] = "background-color:red", [42]="background-color:green",
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45 [43]="background-color:yellow", [44] = "background-color:blue", [45] = "background-color: magenta",
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46 [46] = "background-color:cyan", [47] = "background-color: white";
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47 };
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48
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49 local fmt_string = char(0x1B).."[%sm%s"..char(0x1B).."[0m";
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50 local function getstring(style, text)
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51 if style then
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52 return format(fmt_string, style, text);
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53 else
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54 return text;
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55 end
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56 end
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57
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58 local function getstyle(...)
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59 local styles, result = { ... }, {};
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60 for i, style in ipairs(styles) do
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61 style = stylemap[style];
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62 if style then
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63 t_insert(result, style);
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64 end
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65 end
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66 return t_concat(result, ";");
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67 end
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68
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69 local last = "0";
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70 local function setstyle(style)
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71 style = style or "0";
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72 if style ~= last then
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73 io_write("\27["..style.."m");
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74 last = style;
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75 end
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76 end
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77
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78 if windows then
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79 function setstyle(style)
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80 style = style or "0";
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81 if style ~= last then
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82 windows.set_consolecolor(winstylemap[style] or orig_color);
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83 last = style;
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84 end
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85 end
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86 if not orig_color then
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87 function setstyle(style) end
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88 end
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89 end
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90
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91 local function ansi2css(ansi_codes)
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92 if ansi_codes == "0" then return "</span>"; end
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93 local css = {};
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94 for code in ansi_codes:gmatch("[^;]+") do
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95 t_insert(css, cssmap[tonumber(code)]);
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96 end
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97 return "</span><span style='"..t_concat(css, ";").."'>";
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98 end
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99
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100 local function tohtml(input)
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101 return input:gsub("\027%[(.-)m", ansi2css);
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102 end
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103
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104 return {
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105 getstring = getstring;
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106 getstyle = getstyle;
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107 setstyle = setstyle;
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108 tohtml = tohtml;
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109 };