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1 /*******************************************************************************
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2
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3 copyright: Copyright (c) 2004 Kris Bell. All rights reserved
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4
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5 license: BSD style: $(LICENSE)
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6
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7 version: Initial release: May 2004
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8
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9 author: Kris
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10
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11 *******************************************************************************/
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12
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13 module tango.util.log.DateLayout;
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14
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15 private import tango.text.Util;
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16
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17 private import tango.time.Clock,
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18 tango.time.WallClock;
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19
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20 private import tango.text.convert.Integer;
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21
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22 private import tango.util.log.Event,
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23 tango.util.log.EventLayout;
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24
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25 /*******************************************************************************
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26
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27 A layout with ISO-8601 date information prefixed to each message
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28
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29 *******************************************************************************/
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30
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31 public class DateLayout : EventLayout
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32 {
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33 private bool localTime;
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34
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35 private static char[6] spaces = ' ';
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36
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37 /***********************************************************************
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38
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39 Ctor with indicator for local vs UTC time. Default is
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40 local time.
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41
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42 ***********************************************************************/
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43
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44 this (bool localTime = true)
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45 {
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46 this.localTime = localTime;
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47 }
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48
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49 /***********************************************************************
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50
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51 Format message attributes into an output buffer and return
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52 the populated portion.
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53
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54 ***********************************************************************/
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55
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56 char[] header (Event event)
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57 {
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58 char[] level = event.getLevelName;
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59
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60 // convert time to field values
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61 auto tm = event.getTime;
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62 auto dt = (localTime) ? WallClock.toDate(tm) : Clock.toDate(tm);
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63
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64 // format date according to ISO-8601 (lightweight formatter)
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65 char[20] tmp = void;
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66 return layout (event.scratch.content, "%0-%1-%2 %3:%4:%5,%6 %7%8 %9 - ",
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67 convert (tmp[0..4], dt.date.year),
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68 convert (tmp[4..6], dt.date.month),
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69 convert (tmp[6..8], dt.date.day),
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70 convert (tmp[8..10], dt.time.hours),
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71 convert (tmp[10..12], dt.time.minutes),
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72 convert (tmp[12..14], dt.time.seconds),
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73 convert (tmp[14..17], dt.time.millis),
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74 spaces [0 .. $-level.length],
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75 level,
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76 event.getName
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77 );
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78 }
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79
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80 /**********************************************************************
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81
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82 Convert an integer to a zero prefixed text representation
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83
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84 **********************************************************************/
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85
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86 private char[] convert (char[] tmp, int i)
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87 {
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88 return format (tmp, cast(long) i, Style.Unsigned, Flags.Zero);
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89 }
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90 }
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