1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef COSV_STRINGDATA_HXX 25 #define COSV_STRINGDATA_HXX 26 27 28 #include <cosv/str_types.hxx> 29 #include <cstring> 30 31 32 namespace csv 33 { 34 35 /** @tpl CHAR 36 The expression CHAR(0) has to be valid. 37 */ 38 template <class CHAR> 39 class StringData 40 { 41 public: 42 typedef StringData self; 43 44 typedef str::size size_type; 45 typedef str::position position_type; 46 47 // LIFECYCLE 48 StringData(); 49 /** @precond i_pData != 0 50 @precond i_nValidLength <= strlen(i_pData) 51 */ 52 StringData( 53 const CHAR * i_pData, 54 size_type i_nValidLength ); 55 ~StringData(); 56 // OPERATORS 57 58 // OPERATIONS 59 60 // INQUIRY 61 const CHAR * Data() const; 62 63 /** @returns the allocated number of CHAR. 64 This may be different from the number of bytes. 65 There is actually allocated one more CHAR, 66 which is guaranteed to be CHAR(0) in all circumstances. 67 */ 68 size_type Size() const; 69 70 private: 71 /* Because this is used only within a refcounted structure, 72 these functions are forbidden - at least yet. 73 */ 74 StringData(const self&); 75 self & operator=(const self&); 76 77 // DATA 78 DYN CHAR * dpData; 79 size_type nSize; /// The allocated size - 1 (for the finishing 0). 80 }; 81 82 83 84 // IMPLEMENTATION 85 86 template <class CHAR> 87 StringData<CHAR>::StringData() 88 : dpData( new CHAR[1] ), 89 nSize(0) 90 { 91 *dpData = CHAR(0); 92 } 93 94 template <class CHAR> 95 StringData<CHAR>::StringData( const CHAR * i_pData, 96 size_type i_nValidLength ) 97 : dpData( new CHAR[i_nValidLength + 1] ), 98 nSize(i_nValidLength) 99 { 100 memcpy( dpData, i_pData, i_nValidLength * sizeof(CHAR) ); 101 dpData[nSize] = CHAR(0); 102 } 103 104 template <class CHAR> 105 StringData<CHAR>::~StringData() 106 { 107 delete [] dpData; 108 } 109 110 template <class CHAR> 111 const CHAR * 112 StringData<CHAR>::Data() const 113 { 114 return dpData; 115 } 116 117 template <class CHAR> 118 typename StringData<CHAR>::size_type 119 StringData<CHAR>::Size() const 120 { 121 return nSize; 122 } 123 124 125 126 } // namespace csv 127 128 129 #endif 130 131 132