00001 /******************************************************************************* 00002 00003 @file Properties.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 00027 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 00028 00029 00030 @version Initial version, May 2004 00031 @author Kris 00032 00033 00034 *******************************************************************************/ 00035 00036 module mango.io.Properties; 00037 00038 private import mango.utils.Text; 00039 00040 private import mango.io.Token, 00041 mango.io.Tokenizer, 00042 mango.io.FileConduit; 00043 00044 private import mango.io.model.IConduit; 00045 00046 /******************************************************************************* 00047 00048 Provides load facilities for a properties file. That is, a file 00049 or other medium containing lines of text with a name=value layout. 00050 00051 *******************************************************************************/ 00052 00053 class Properties 00054 { 00055 /*********************************************************************** 00056 00057 Load properties from the named file, and pass each of them 00058 to the provided delegate. 00059 00060 ***********************************************************************/ 00061 00062 static void load (char[] filepath, void delegate (char[]name, char[] value) dg) 00063 { 00064 FileConduit fc = new FileConduit (filepath, FileStyle.ReadExisting); 00065 00066 try { 00067 load (fc, dg); 00068 } finally 00069 fc.close(); 00070 } 00071 00072 /*********************************************************************** 00073 00074 Load properties from the provided conduit, and pass them to 00075 the provided delegate. 00076 00077 ***********************************************************************/ 00078 00079 static void load (IConduit conduit, void delegate (char[]name, char[] value) dg) 00080 { 00081 // bind the input to a line tokenizer 00082 CompositeToken line = new CompositeToken (Tokenizers.line, conduit); 00083 00084 // scan all lines 00085 while (line.get) 00086 { 00087 char[] text = Text.trim (line.toString); 00088 00089 // comments require '#' as the first non-whitespace char 00090 if (text.length && (text[0] != '#')) 00091 { 00092 // find the '=' char 00093 int i = Text.indexOf (text, '='); 00094 00095 // ignore if not found ... 00096 if (i > 0) 00097 dg (Text.trim (text[0..i]), Text.trim (text[i+1..text.length])); 00098 } 00099 } 00100 } 00101 }