1 // Copyright 2012 The Kyua Authors. 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 /// 43 /// \return a flattened representation of \p key, "."-joined. 44 std::string 45 utils::config::detail::flatten_key(const tree_key& key) 46 { 47 PRE(!key.empty()); 48 return text::join(key, "."); 49 } 50 51 52 /// Parses and validates a textual key. 53 /// 54 /// \param str The key to process in dotted notation. 55 /// 56 /// \return The tokenized key if valid. 57 /// 58 /// \throw invalid_key_error If the input key is empty or invalid for any other 59 /// reason. Invalid does NOT mean unknown though. 60 utils::config::detail::tree_key 61 utils::config::detail::parse_key(const std::string& str) 62 { 63 const tree_key key = text::split(str, '.'); 64 if (key.empty()) 65 throw invalid_key_error("Empty key"); 66 for (tree_key::const_iterator iter = key.begin(); iter != key.end(); iter++) 67 if ((*iter).empty()) 68 throw invalid_key_error(F("Empty component in key '%s'") % str); 69 return key; 70 } 71