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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.EventLayout;
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14
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15 private import tango.time.Time;
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16
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17 private import tango.util.log.Event;
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18
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19 /*******************************************************************************
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20
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21 Base class for all logging layout instances
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22
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23 *******************************************************************************/
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24
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25 public class EventLayout
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26 {
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27 /***********************************************************************
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28
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29 Subclasses should implement this method to perform the
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30 formatting of each message header
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31
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32 ***********************************************************************/
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33
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34 abstract char[] header (Event event);
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35
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36 /***********************************************************************
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37
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38 Subclasses should implement this method to perform the
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39 formatting of each message footer
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40
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41 ***********************************************************************/
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42
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43 char[] footer (Event event)
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44 {
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45 return "";
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46 }
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47
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48 /***********************************************************************
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49
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50 Subclasses should implement this method to perform the
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51 formatting of the actual message content.
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52
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53 ***********************************************************************/
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54
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55 char[] content (Event event)
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56 {
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57 return event.toString;
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58 }
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59
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60 /***********************************************************************
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61
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62 Convert a time value (in milliseconds) to ascii
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63
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64 ***********************************************************************/
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65
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66 final char[] toMilli (char[] s, TimeSpan time)
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67 {
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68 assert (s.length > 0);
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69 long ms = time.millis;
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70
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71 int len = s.length;
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72 do {
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73 s[--len] = ms % 10 + '0';
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74 ms /= 10;
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75 } while (ms && len);
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76 return s[len..s.length];
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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
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83 A bare layout comprised of tag and message
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84
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85 *******************************************************************************/
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86
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87 public class SpartanLayout : EventLayout
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88 {
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89 /***********************************************************************
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90
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91 Format outgoing message
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92
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93 ***********************************************************************/
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94
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95 char[] header (Event event)
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96 {
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97 event.append(event.getName).append(event.getHierarchy.context.label).append(" - ");
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98 return event.getContent;
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99 }
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100 }
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101
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102
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103 /*******************************************************************************
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104
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105 A simple layout comprised only of level, name, and message
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106
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107 *******************************************************************************/
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108
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109 public class SimpleLayout : EventLayout
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110 {
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111 /***********************************************************************
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112
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113 Format outgoing message
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114
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115 ***********************************************************************/
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116
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117 char[] header (Event event)
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118 {
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119 event.append (event.getLevelName)
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120 .append (event.getName)
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121 .append(event.getHierarchy.context.label)
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122 .append (" - ");
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123 return event.getContent;
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124 }
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125 }
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126
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127
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128 /*******************************************************************************
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129
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130 A simple layout comprised only of time(ms), level, name, and message
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131
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132 *******************************************************************************/
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133
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134 public class SimpleTimerLayout : EventLayout
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135 {
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136 /***********************************************************************
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137
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138 Format outgoing message
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139
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140 ***********************************************************************/
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141
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142 char[] header (Event event)
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143 {
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144 char[20] tmp;
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145
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146 event.append (toMilli (tmp, event.getSpan))
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147 .append (" ")
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148 .append (event.getLevelName)
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149 .append (event.getName)
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150 .append(event.getHierarchy.context.label)
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151 .append (" - ");
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152 return event.getContent;
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153 }
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154 }
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