00001 /******************************************************************************* 00002 00003 @file Layout.d 00004 00005 Copyright (c) 2004 Kris Bell 00006 00007 This software is provided 'as-is', without any express or implied 00008 warranty. In no event will the authors be held liable for damages 00009 of any kind arising from the use of this software. 00010 00011 Permission is hereby granted to anyone to use this software for any 00012 purpose, including commercial applications, and to alter it and/or 00013 redistribute it freely, subject to the following restrictions: 00014 00015 1. The origin of this software must not be misrepresented; you must 00016 not claim that you wrote the original software. If you use this 00017 software in a product, an acknowledgment within documentation of 00018 said product would be appreciated but is not required. 00019 00020 2. Altered source versions must be plainly marked as such, and must 00021 not be misrepresented as being the original software. 00022 00023 3. This notice may not be removed or altered from any distribution 00024 of the source. 00025 00026 4. Derivative works are permitted, but they must carry this notice 00027 in full and credit the original source. 00028 00029 00030 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 00031 00032 00033 @version Initial version, May 2004 00034 @author Kris 00035 00036 00037 *******************************************************************************/ 00038 00039 module mango.log.Layout; 00040 00041 private import mango.log.Event; 00042 00043 /******************************************************************************* 00044 00045 Base class for all Layout instances 00046 00047 *******************************************************************************/ 00048 00049 public class Layout 00050 { 00051 private import mango.log.Logger; 00052 00053 /*********************************************************************** 00054 00055 Subclasses should implement this method to perform the 00056 formatting of each message header 00057 00058 ***********************************************************************/ 00059 00060 abstract char[] header (Event event); 00061 00062 /*********************************************************************** 00063 00064 Subclasses should implement this method to perform the 00065 formatting of each message footer 00066 00067 ***********************************************************************/ 00068 00069 char[] footer (Event event) 00070 { 00071 return ""; 00072 } 00073 00074 /*********************************************************************** 00075 00076 Subclasses should implement this method to perform the 00077 formatting of the actual message content. 00078 00079 ***********************************************************************/ 00080 00081 char[] content (Event event) 00082 { 00083 return event.toString; 00084 } 00085 00086 /*********************************************************************** 00087 00088 Convert a time value (in milliseconds) to ascii 00089 00090 ***********************************************************************/ 00091 00092 final char[] ultoa (char[] s, ulong l) 00093 in { 00094 assert (s.length > 0); 00095 } 00096 body 00097 { 00098 int len = s.length; 00099 do { 00100 s[--len] = l % 10 + '0'; 00101 l /= 10; 00102 } while (l && len); 00103 return s[len..s.length]; 00104 } 00105 } 00106 00107 00108 /******************************************************************************* 00109 00110 A simple layout comprised only of level, name, and message 00111 00112 *******************************************************************************/ 00113 00114 public class SimpleLayout : Layout 00115 { 00116 static protected SimpleLayout simpleLayout; 00117 00118 /*********************************************************************** 00119 00120 Make one of these available for use as the default layout 00121 00122 ***********************************************************************/ 00123 00124 static this () 00125 { 00126 simpleLayout = new SimpleLayout(); 00127 } 00128 00129 /*********************************************************************** 00130 00131 Format outgoing message 00132 00133 ***********************************************************************/ 00134 00135 char[] header (Event event) 00136 { 00137 event.append (event.getLevelName) 00138 .append(event.getName) 00139 .append(" - "); 00140 return event.getContent; 00141 } 00142 } 00143 00144 /******************************************************************************* 00145 00146 A simple layout comprised only of time(ms), level, name, and message 00147 00148 *******************************************************************************/ 00149 00150 public class SimpleTimerLayout : Layout 00151 { 00152 /*********************************************************************** 00153 00154 Format outgoing message 00155 00156 ***********************************************************************/ 00157 00158 char[] header (Event event) 00159 { 00160 char[20] tmp; 00161 00162 event.append (ultoa (tmp, event.getTime)) 00163 .append (" ") 00164 .append (event.getLevelName) 00165 .append (event.getName) 00166 .append (" - "); 00167 return event.getContent; 00168 } 00169 }