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 
CElementLocator(CElement * pSubRootElement,bool bStrict)35 CElementLocator::CElementLocator(CElement *pSubRootElement, bool bStrict)
36     : _pSubRootElement(pSubRootElement), _bStrict(bStrict)
37 {
38 }
39 
40 // Locate element
locate(const string & strPath,CElement ** ppElement,string & strError)41 bool CElementLocator::locate(const string &strPath, CElement **ppElement, string &strError)
42 {
43     CPathNavigator pathNavigator(strPath);
44 
45     if (!pathNavigator.isPathValid()) {
46 
47         strError = "Invalid Path";
48 
49         return false;
50     }
51 
52     // Sub root element?
53     string *pStrChildName = pathNavigator.next();
54 
55     if (!pStrChildName) {
56 
57         if (_bStrict) {
58 
59             strError = "Path not found: " + strPath;
60 
61             return false;
62         }
63         // Empty path
64         return true;
65     }
66 
67     if (*pStrChildName != _pSubRootElement->getName()) {
68 
69         strError = "Path not found: " + strPath;
70 
71         return false;
72     }
73 
74     // Find in tree
75     *ppElement = _pSubRootElement->findDescendant(pathNavigator);
76 
77     if (!*ppElement) {
78 
79         strError = "Path not found: " + strPath;
80 
81         return false;
82     }
83 
84     return true;
85 }
86