DataSourceFactory.cpp

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00001 //===========================================================================
00002 //Copyright (C) 2003, 2004 Zentaro Kavanagh
00003 //
00004 //Redistribution and use in source and binary forms, with or without
00005 //modification, are permitted provided that the following conditions
00006 //are met:
00007 //
00008 //- Redistributions of source code must retain the above copyright
00009 //  notice, this list of conditions and the following disclaimer.
00010 //
00011 //- Redistributions in binary form must reproduce the above copyright
00012 //  notice, this list of conditions and the following disclaimer in the
00013 //  documentation and/or other materials provided with the distribution.
00014 //
00015 //- Neither the name of Zentaro Kavanagh nor the names of contributors 
00016 //  may be used to endorse or promote products derived from this software 
00017 //  without specific prior written permission.
00018 //
00019 //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00020 //``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00021 //LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00022 //PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
00023 //CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00024 //EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00025 //PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00026 //PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00027 //LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00028 //NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00029 //SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00030 //===========================================================================
00031 #include "stdafx.h"
00032 #include "datasourcefactory.h"
00033 
00034 DataSourceFactory::DataSourceFactory(void)
00035 {
00036 }
00037 
00038 DataSourceFactory::~DataSourceFactory(void)
00039 {
00040 }
00041 
00042 IFilterDataSource* DataSourceFactory::createDataSource(string inSourceLocation) {
00043         string locType = identifySourceType(inSourceLocation);
00044 
00045         if(locType.length() == 1) {
00046                 //File...
00047                 return new FilterFileSource;
00048         } else if (locType == "\\\\") {
00049                 //Network share...
00050                 return new FilterFileSource;
00051         } else if (locType == "http") {
00052                 //Http stream
00053                 return new HTTPFileSource;
00054         } else {
00055                 //Something else
00056                 return NULL;
00057         }
00058 }
00059 
00060 string DataSourceFactory::identifySourceType(string inSourceLocation) {
00061         size_t locPos = inSourceLocation.find(':');
00062         if (locPos == string::npos) {
00063                 //No colon... not a normal file. See if it's a network share...
00064 
00065                 //Make sure it's long enough...
00066                 if (inSourceLocation.length() > 2) {
00067                         string retStr = inSourceLocation.substr(0,2);
00068                         if (retStr == "\\\\") {
00069                                 //A "\\" is a network share
00070                                 return retStr;
00071                         } else {
00072                                 //Not a network share.
00073                                 return "";
00074                         }
00075                 } else {
00076                         //Too short
00077                         return "";
00078                 }
00079         } else {
00080                 string retStr = inSourceLocation.substr(0,locPos);
00081                 return retStr;
00082         }
00083         
00084 }

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