1 // Copyright 2012 Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above copyright 11 // notice, this list of conditions and the following disclaimer in the 12 // documentation and/or other materials provided with the distribution. 13 // * Neither the name of Google Inc. nor the names of its contributors 14 // may be used to endorse or promote products derived from this software 15 // without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 #include "utils/config/tree.ipp" 30 31 #include "utils/config/exceptions.hpp" 32 #include "utils/format/macros.hpp" 33 #include "utils/text/operations.hpp" 34 35 namespace config = utils::config; 36 namespace text = utils::text; 37 38 39 /// Converts a key to its textual representation. 40 /// 41 /// \param key The key to convert. 42 std::string 43 utils::config::detail::flatten_key(const tree_key& key) 44 { 45 PRE(!key.empty()); 46 return text::join(key, "."); 47 } 48 49 50 /// Parses and validates a textual key. 51 /// 52 /// \param str The key to process in dotted notation. 53 /// 54 /// \return The tokenized key if valid. 55 /// 56 /// \throw invalid_key_error If the input key is empty or invalid for any other 57 /// reason. Invalid does NOT mean unknown though. 58 utils::config::detail::tree_key 59 utils::config::detail::parse_key(const std::string& str) 60 { 61 const tree_key key = text::split(str, '.'); 62 if (key.empty()) 63 throw invalid_key_error("Empty key"); 64 for (tree_key::const_iterator iter = key.begin(); iter != key.end(); iter++) 65 if ((*iter).empty()) 66 throw invalid_key_error(F("Empty component in key '%s'") % str); 67 return key; 68 } 69