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1 module doodle.core.logging;
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2
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3 private {
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4 import std.stdio;
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5 import std.typecons;
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6 }
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7
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8 public {
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9 void trace(string file = __FILE__, int line = __LINE__)(in string message) {
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10 log(Severity.TRACE, std.string.format("%s(%d): TRACE: %s", right(file, 20), line, message));
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11 }
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12 void info(string file = __FILE__, int line = __LINE__)(in string message) {
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13 log(Severity.INFO, std.string.format("%s(%d): INFO: %s", right(file, 20), line, message));
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14 }
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15 void message(string file = __FILE__, int line = __LINE__)(in string message) {
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16 log(Severity.MESSAGE, std.string.format("%s(%d): MESSAGE: %s", right(file, 20), line, message));
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17 }
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18 void warning(string file = __FILE__, int line = __LINE__)(in string message) {
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19 log(Severity.WARNING, std.string.format("%s(%d): WARNING: %s", right(file, 20), line, message));
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20 }
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21 void error(string file = __FILE__, int line = __LINE__)(in string message) {
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22 log(Severity.ERROR, std.string.format("%s(%d): ERROR: %s", right(file, 20), line, message));
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23 }
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24 void fatal(string file = __FILE__, int line = __LINE__)(in string message) {
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25 log(Severity.FATAL, std.string.format("%s(%d): FATAL: %s", right(file, 20), line, message));
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26 assert(0);
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27 }
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28 }
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29
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30 private {
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31 mixin(defineEnum!("Severity",
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32 "TRACE", "INFO", "MESSAGE", "WARNING", "ERROR", "FATAL"));
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33
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34 string mod_string(in Severity s) {
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35 switch (s) {
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36 case Severity.TRACE:
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37 return modifier_string(Modifier.DIM) ~ fg_color_string(Color.CYAN);
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38 case Severity.INFO:
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39 return modifier_string(Modifier.UNDERLINE) ~ fg_color_string(Color.GREEN);
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40 case Severity.MESSAGE:
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41 return fg_color_string(Color.YELLOW);
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42 case Severity.WARNING:
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43 return modifier_string(Modifier.BRIGHT) ~ fg_color_string(Color.MAGENTA);
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44 case Severity.ERROR:
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45 return modifier_string(Modifier.BRIGHT) ~ fg_color_string(Color.RED);
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46 case Severity.FATAL:
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47 return modifier_string(Modifier.BRIGHT) ~ bg_color_string(Color.RED) ~ fg_color_string(Color.WHITE);
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48 }
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49 assert(0);
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50 }
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51
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52 void log(in Severity severity, in string message) {
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53 write(mod_string(severity));
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54 write(message);
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55 writeln(modifier_string(Modifier.RESET));
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56 }
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57
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58 enum Modifier {
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59 RESET = 0,
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60 BRIGHT = 1,
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61 DIM = 2, // does nothing in gnome-terminal
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62 UNDERLINE = 3, // does nothing in gnome-terminal
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63 BLINK = 5, // does nothing in gnome-terminal
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64 REVERSE = 7,
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65 HIDDEN = 8
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66 }
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67
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68 enum Color {
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69 BLACK = 0,
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70 RED = 1,
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71 GREEN = 2,
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72 YELLOW = 3,
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73 BLUE = 4,
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74 MAGENTA = 5,
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75 CYAN = 6,
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76 WHITE = 7
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77 }
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78
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79 string modifier_string(Modifier m) { return std.string.format("\033[%dm", 0 + m); }
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80 string fg_color_string(Color c) { return std.string.format("\033[%dm", 30 + c); }
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81 string bg_color_string(Color c) { return std.string.format("\033[%dm", 40 + c); }
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82
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83 private const(char)[] right(in char[] str, int n) {
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84 int pos = str.length < n ? 0 : str.length - n;
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85 return str[pos..$];
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86 }
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87 }
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