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      1 /*
      2  * Copyright (c) 2011-2014, Intel Corporation
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without modification,
      6  * are permitted provided that the following conditions are met:
      7  *
      8  * 1. Redistributions of source code must retain the above copyright notice, this
      9  * list of conditions and the following disclaimer.
     10  *
     11  * 2. Redistributions in binary form must reproduce the above copyright notice,
     12  * this list of conditions and the following disclaimer in the documentation and/or
     13  * other materials provided with the distribution.
     14  *
     15  * 3. Neither the name of the copyright holder nor the names of its contributors
     16  * may be used to endorse or promote products derived from this software without
     17  * specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     22  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
     23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     26  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 #include "ElementLocator.h"
     31 #include "PathNavigator.h"
     32 
     33 using std::string;
     34 
     35 CElementLocator::CElementLocator(CElement* pSubRootElement, bool bStrict) : _pSubRootElement(pSubRootElement), _bStrict(bStrict)
     36 {
     37 }
     38 
     39 // Locate element
     40 bool CElementLocator::locate(const string& strPath, CElement** ppElement, string& strError)
     41 {
     42     CPathNavigator pathNavigator(strPath);
     43 
     44     if (!pathNavigator.isPathValid()) {
     45 
     46         strError = "Invalid Path";
     47 
     48         return false;
     49     }
     50 
     51     // Sub root element?
     52     string* pStrChildName = pathNavigator.next();
     53 
     54     if (!pStrChildName) {
     55 
     56         if (_bStrict) {
     57 
     58             strError = "Path not found: " + strPath;
     59 
     60             return false;
     61         }
     62         // Empty path
     63         return true;
     64     }
     65 
     66     if (*pStrChildName != _pSubRootElement->getName()) {
     67 
     68         strError = "Path not found: " + strPath;
     69 
     70         return false;
     71     }
     72 
     73     // Find in tree
     74     *ppElement = _pSubRootElement->findDescendant(pathNavigator);
     75 
     76     if (!*ppElement) {
     77 
     78         strError = "Path not found: " + strPath;
     79 
     80         return false;
     81     }
     82 
     83     return true;
     84 }
     85 
     86