prosody
bffce780999d
util/termcolours.lua

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util/termcolours.lua @ 4219:bffce780999d

Merge 0.8->trunk
author Matthew Wild <mwild1@gmail.com>
date Tue, 01 Mar 2011 06:14:03 +0000
parent 3749:588c09d7903c
child 4698:739f7ae1a01e
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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 ipairs = ipairs;
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13 local io_write = io.write;
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14
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15 local windows;
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16 if os.getenv("WINDIR") then
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17 windows = require "util.windows";
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18 end
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19 local orig_color = windows and windows.get_consolecolor and windows.get_consolecolor();
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20
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21 module "termcolours"
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22
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23 local stylemap = {
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24 reset = 0; bright = 1, dim = 2, underscore = 4, blink = 5, reverse = 7, hidden = 8;
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25 black = 30; red = 31; green = 32; yellow = 33; blue = 34; magenta = 35; cyan = 36; white = 37;
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26 ["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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27 bold = 1, dark = 2, underline = 4, underlined = 4, normal = 0;
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28 }
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29
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30 local winstylemap = {
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31 ["0"] = orig_color, -- reset
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32 ["1"] = 7+8, -- bold
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33 ["1;33"] = 2+4+8, -- bold yellow
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34 ["1;31"] = 4+8 -- bold red
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35 }
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36
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37 local fmt_string = char(0x1B).."[%sm%s"..char(0x1B).."[0m";
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38 function getstring(style, text)
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39 if style then
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40 return format(fmt_string, style, text);
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41 else
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42 return text;
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43 end
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44 end
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45
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46 function getstyle(...)
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47 local styles, result = { ... }, {};
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48 for i, style in ipairs(styles) do
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49 style = stylemap[style];
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50 if style then
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51 t_insert(result, style);
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52 end
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53 end
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54 return t_concat(result, ";");
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55 end
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56
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57 local last = "0";
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58 function setstyle(style)
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59 style = style or "0";
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60 if style ~= last then
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61 io_write("\27["..style.."m");
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62 last = style;
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63 end
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64 end
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65
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66 if windows then
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67 function setstyle(style)
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68 style = style or "0";
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69 if style ~= last then
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70 windows.set_consolecolor(winstylemap[style] or orig_color);
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71 last = style;
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72 end
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73 end
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74 if not orig_color then
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75 function setstyle(style) end
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76 end
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77 end
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78
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79 return _M;