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 "PathNavigator.h" 31 #include "Tokenizer.h" 32 33 CPathNavigator::CPathNavigator(const std::string& strPath) : _uiCurrentIndex(0) 34 { 35 init(strPath); 36 } 37 38 void CPathNavigator::init(const std::string& strPath) 39 { 40 Tokenizer tokenizer(strPath, "/"); 41 42 _astrItems = tokenizer.split(); 43 44 _bValid = checkPathFormat(strPath); 45 } 46 47 bool CPathNavigator::isPathValid() const 48 { 49 return _bValid; 50 } 51 52 // Navigate through 53 bool CPathNavigator::navigateThrough(const std::string& strItemName, std::string& strError) 54 { 55 if (!_bValid) { 56 57 strError = "Path not well formed: " + getCurrentPath(); 58 59 return false; 60 } 61 62 std::string* pStrChildName = next(); 63 64 if (!pStrChildName) { 65 66 strError = "Path not complete: " + getCurrentPath() + 67 ", trying to access to " + strItemName; 68 69 return false; 70 } 71 72 if (*pStrChildName != strItemName) { 73 74 strError = "Path not found: " + getCurrentPath() + 75 ", expected: " + strItemName + " but found: " + *pStrChildName; 76 77 return false; 78 } 79 80 return true; 81 } 82 83 std::string* CPathNavigator::next() 84 { 85 if (_uiCurrentIndex < _astrItems.size()) { 86 87 return &_astrItems[_uiCurrentIndex++]; 88 } 89 90 return NULL; 91 } 92 93 std::string CPathNavigator::getCurrentPath() const 94 { 95 std::string strPath = "/"; 96 97 if (!_uiCurrentIndex) { 98 99 return strPath; 100 } 101 102 uint32_t uiItem; 103 104 for (uiItem = 0; uiItem < _uiCurrentIndex - 1; uiItem++) { 105 106 strPath += _astrItems[uiItem] + "/"; 107 } 108 109 strPath += _astrItems[uiItem]; 110 111 return strPath; 112 } 113 114 115 bool CPathNavigator::checkPathFormat(const std::string& strUpl) 116 { 117 return strUpl[0] == '/'; 118 } 119