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 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.io.Properties; 00040 00041 private import mango.utils.Text; 00042 00043 private import mango.io.Token, 00044 mango.io.Tokenizer, 00045 mango.io.FileConduit; 00046 00047 private import mango.io.model.IConduit; 00048 00049 /******************************************************************************* 00050 00051 Provides load facilities for a properties file. That is, a file 00052 or other medium containing lines of text with a name=value layout. 00053 00054 *******************************************************************************/ 00055 00056 class Properties 00057 { 00058 /*********************************************************************** 00059 00060 Load properties from the named file, and pass each of them 00061 to the provided delegate. 00062 00063 ***********************************************************************/ 00064 00065 static void load (char[] filepath, void delegate (char[]name, char[] value) dg) 00066 { 00067 FileConduit fc = new FileConduit (filepath, FileStyle.ReadExisting); 00068 00069 try { 00070 load (fc, dg); 00071 } finally 00072 fc.close(); 00073 } 00074 00075 /*********************************************************************** 00076 00077 Load properties from the provided conduit, and pass them to 00078 the provided delegate. 00079 00080 ***********************************************************************/ 00081 00082 static void load (IConduit conduit, void delegate (char[]name, char[] value) dg) 00083 { 00084 // bind the input to a line tokenizer 00085 CompositeToken line = new CompositeToken (Tokenizers.line, conduit); 00086 00087 // scan all lines 00088 while (line.get) 00089 { 00090 char[] text = Text.trim (line.toString); 00091 00092 // comments require '#' as the first non-whitespace char 00093 if (text.length && (text[0] != '#')) 00094 { 00095 // find the '=' char 00096 int i = Text.indexOf (text, '='); 00097 00098 // ignore if not found ... 00099 if (i > 0) 00100 dg (Text.trim (text[0..i]), Text.trim (text[i+1..text.length])); 00101 } 00102 } 00103 } 00104 }