string revision f31fdb2e57186a552855e27f55036369ec1c279a
1fe47ae56a8808c836923466e44704db3a8371593Niko Catania/* -*- c++ -*- */ 2fe47ae56a8808c836923466e44704db3a8371593Niko Catania/* 3fe47ae56a8808c836923466e44704db3a8371593Niko Catania * Copyright (C) 2009 The Android Open Source Project 4fe47ae56a8808c836923466e44704db3a8371593Niko Catania * All rights reserved. 5fe47ae56a8808c836923466e44704db3a8371593Niko Catania * 6fe47ae56a8808c836923466e44704db3a8371593Niko Catania * Redistribution and use in source and binary forms, with or without 7fe47ae56a8808c836923466e44704db3a8371593Niko Catania * modification, are permitted provided that the following conditions 8fe47ae56a8808c836923466e44704db3a8371593Niko Catania * are met: 9fe47ae56a8808c836923466e44704db3a8371593Niko Catania * * Redistributions of source code must retain the above copyright 10fe47ae56a8808c836923466e44704db3a8371593Niko Catania * notice, this list of conditions and the following disclaimer. 11fe47ae56a8808c836923466e44704db3a8371593Niko Catania * * Redistributions in binary form must reproduce the above copyright 12fe47ae56a8808c836923466e44704db3a8371593Niko Catania * notice, this list of conditions and the following disclaimer in 13fe47ae56a8808c836923466e44704db3a8371593Niko Catania * the documentation and/or other materials provided with the 14fe47ae56a8808c836923466e44704db3a8371593Niko Catania * distribution. 15fe47ae56a8808c836923466e44704db3a8371593Niko Catania * 16fe47ae56a8808c836923466e44704db3a8371593Niko Catania * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17fe47ae56a8808c836923466e44704db3a8371593Niko Catania * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18fe47ae56a8808c836923466e44704db3a8371593Niko Catania * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 19fe47ae56a8808c836923466e44704db3a8371593Niko Catania * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 20fe47ae56a8808c836923466e44704db3a8371593Niko Catania * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21fe47ae56a8808c836923466e44704db3a8371593Niko Catania * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22fe47ae56a8808c836923466e44704db3a8371593Niko Catania * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 23fe47ae56a8808c836923466e44704db3a8371593Niko Catania * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 24fe47ae56a8808c836923466e44704db3a8371593Niko Catania * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25fe47ae56a8808c836923466e44704db3a8371593Niko Catania * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 26fe47ae56a8808c836923466e44704db3a8371593Niko Catania * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27fe47ae56a8808c836923466e44704db3a8371593Niko Catania * SUCH DAMAGE. 28fe47ae56a8808c836923466e44704db3a8371593Niko Catania */ 29fe47ae56a8808c836923466e44704db3a8371593Niko Catania 30fe47ae56a8808c836923466e44704db3a8371593Niko Catania#ifndef ANDROID_ASTL_STRING__ 31fe47ae56a8808c836923466e44704db3a8371593Niko Catania#define ANDROID_ASTL_STRING__ 32fe47ae56a8808c836923466e44704db3a8371593Niko Catania 33fe47ae56a8808c836923466e44704db3a8371593Niko Catania#include <cstddef> 3491ea6c037471a1acd97b03c3097223777906f748Nicolas Catania#include <iterator> 35f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania#include <char_traits.h> 36fe47ae56a8808c836923466e44704db3a8371593Niko Catania 37fe47ae56a8808c836923466e44704db3a8371593Niko Catanianamespace std { 38fe47ae56a8808c836923466e44704db3a8371593Niko Catania 39fe47ae56a8808c836923466e44704db3a8371593Niko Catania// Simple string implementation. Its purpose is to be able to compile code that 40fe47ae56a8808c836923466e44704db3a8371593Niko Catania// uses the STL and requires std::string. 41fe47ae56a8808c836923466e44704db3a8371593Niko Catania// 42fe47ae56a8808c836923466e44704db3a8371593Niko Catania// IMPORTANT: 43fe47ae56a8808c836923466e44704db3a8371593Niko Catania// . This class it is not fully STL compliant. Some constructors/methods maybe 44fe47ae56a8808c836923466e44704db3a8371593Niko Catania// missing, they will be added on demand. 45fe47ae56a8808c836923466e44704db3a8371593Niko Catania// . We don't provide a std::basic_string template that std::string extends 46fe47ae56a8808c836923466e44704db3a8371593Niko Catania// because we use only char (wchar is not supported on Android). 47fe47ae56a8808c836923466e44704db3a8371593Niko Catania// . The memory allocation scheme uses the heap. Since Android has the concept 48fe47ae56a8808c836923466e44704db3a8371593Niko Catania// of SharedBuffer, we may, in the future, templatize this class and add an 49fe47ae56a8808c836923466e44704db3a8371593Niko Catania// allocation parameter. 50fe47ae56a8808c836923466e44704db3a8371593Niko Catania// . The implementation is not optimized in any way (no copy on write support), 51fe47ae56a8808c836923466e44704db3a8371593Niko Catania// temporary instance may be expensive. 5291ea6c037471a1acd97b03c3097223777906f748Nicolas Catania// . Currently there is limited support for iterators. 53d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania// 54fe47ae56a8808c836923466e44704db3a8371593Niko Catania 55fe47ae56a8808c836923466e44704db3a8371593Niko Cataniaclass string 56fe47ae56a8808c836923466e44704db3a8371593Niko Catania{ 57fe47ae56a8808c836923466e44704db3a8371593Niko Catania public: 58f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef char_traits traits_type; 59f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef traits_type::char_type value_type; 60f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef size_t size_type; 61f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef ptrdiff_t difference_type; 62f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef value_type& reference; 63f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef const value_type& const_reference; 64f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef value_type* pointer; 65f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef const value_type* const_pointer; 6691ea6c037471a1acd97b03c3097223777906f748Nicolas Catania typedef __wrapper_iterator<pointer,string> iterator; 6791ea6c037471a1acd97b03c3097223777906f748Nicolas Catania typedef __wrapper_iterator<const_pointer,string> const_iterator; 68fe47ae56a8808c836923466e44704db3a8371593Niko Catania 697618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania static const size_type npos = static_cast<size_type>(-1); 70fe47ae56a8808c836923466e44704db3a8371593Niko Catania 71fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Constructors 72fe47ae56a8808c836923466e44704db3a8371593Niko Catania string(); 73fe47ae56a8808c836923466e44704db3a8371593Niko Catania 74fe47ae56a8808c836923466e44704db3a8371593Niko Catania string(const string& str); 75fe47ae56a8808c836923466e44704db3a8371593Niko Catania 76fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Construct a string from a source's substring. 77fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param str The source string. 78d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param pos The index of the character to start the copy at. 79d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param n The number of characters to copy. Use string::npos for the 80fe47ae56a8808c836923466e44704db3a8371593Niko Catania // remainder. 81d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania string(const string& str, size_t pos, size_type n); 82fe47ae56a8808c836923466e44704db3a8371593Niko Catania 83d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // Same as above but implicitly copy from pos to the end of the str. 84d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania string(const string& str, size_type pos); 85fe47ae56a8808c836923466e44704db3a8371593Niko Catania 86fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Construct a string from a C string. 87fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param str The source string, must be '\0' terminated. 887618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania string(const value_type *str); 89fe47ae56a8808c836923466e44704db3a8371593Niko Catania 90fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Construct a string from a char array. 91fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param str The source C string. '\0' are ignored. 92d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param n The number of characters to copy. 93d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania string(const value_type *str, size_type n); 94fe47ae56a8808c836923466e44704db3a8371593Niko Catania 95fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Construct a string from a repetition of a character. 96d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param n The number of characters. 97fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param c The character to use. 98d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania string(size_t n, char c); 99fe47ae56a8808c836923466e44704db3a8371593Niko Catania 100fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Construct a string from a char array. 101fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param begin The start of the source C string. '\0' are ignored. 102fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param end The end of source C string. Points just pass the last 103fe47ae56a8808c836923466e44704db3a8371593Niko Catania // character. 1047618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania string(const value_type *begin, const value_type *end); 105fe47ae56a8808c836923466e44704db3a8371593Niko Catania 106fe47ae56a8808c836923466e44704db3a8371593Niko Catania ~string(); 107fe47ae56a8808c836923466e44704db3a8371593Niko Catania 108fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return The number of characters in the string, not including any 109fe47ae56a8808c836923466e44704db3a8371593Niko Catania // null-termination. 1107618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania size_type length() const { return mLength; } 1117618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania size_type size() const { return mLength; } 112fe47ae56a8808c836923466e44704db3a8371593Niko Catania 113fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return A pointer to null-terminated contents. 1147618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania const value_type *c_str() const { return mData; } 1157618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania const value_type *data() const { return mData; } 116fe47ae56a8808c836923466e44704db3a8371593Niko Catania 11760fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // Empty the string on return. Release the internal buffer. Length 11860fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // and capacity are both 0 on return. If you want to keep the 11960fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // internal buffer around for reuse, call 'erase' instead. 120fe47ae56a8808c836923466e44704db3a8371593Niko Catania void clear(); 121fe47ae56a8808c836923466e44704db3a8371593Niko Catania 122fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return true if the string is empty. 123fe47ae56a8808c836923466e44704db3a8371593Niko Catania bool empty() const { return this->size() == 0; } 124fe47ae56a8808c836923466e44704db3a8371593Niko Catania 12560fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // Remove 'len' characters from the string starting at 'pos'. The 12660fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // string length is reduced by 'len'. If len is greater or equal 12760fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // to the number of characters in the string, it is truncated at 12860fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // 'pos'. If 'pos' is beyond the end of the string, 'erase' does 12960fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // nothing. Note, regular STL implementations throw a out_of_range 13060fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // exception in this case. 13160fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // Internally, the capacity of the buffer remains unchanged. If 13260fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // you wanted to recover the deleted chars' memory you should call 13360fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // 'reserve' explicitly (see also 'clear'). 13460fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // @param pos Index of the first character to remove (default to 0) 135d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param n Number of characters to delete. (default to remainder) 13660fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // @return a reference to this string. 137d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania string& erase(size_type pos = 0, size_type n = npos); 13860fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania 139fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param str The string to be append. 140fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return A reference to this string. 141fe47ae56a8808c836923466e44704db3a8371593Niko Catania string& operator+=(const string& str) { return this->append(str); } 142fe47ae56a8808c836923466e44704db3a8371593Niko Catania 143fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param str The C string to be append. 144fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return A reference to this string. 1457618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania string& operator+=(const value_type *str) { return this->append(str); } 146fe47ae56a8808c836923466e44704db3a8371593Niko Catania 147fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param c A character to be append. 148fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return A reference to this string. 149fe47ae56a8808c836923466e44704db3a8371593Niko Catania string& operator+=(const char c) { this->push_back(c); return *this; } 150fe47ae56a8808c836923466e44704db3a8371593Niko Catania 151fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param c A character to be append. 152fe47ae56a8808c836923466e44704db3a8371593Niko Catania void push_back(const char c); 153fe47ae56a8808c836923466e44704db3a8371593Niko Catania 154fe47ae56a8808c836923466e44704db3a8371593Niko Catania // no-op if str is NULL. 1557618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania string& append(const value_type *str); 156d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // no-op if str is NULL. n must be >= 0. 157d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania string& append(const value_type *str, size_type n); 158d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // no-op if str is NULL. pos and n must be >= 0. 159d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania string& append(const value_type *str, size_type pos, size_type n); 160fe47ae56a8808c836923466e44704db3a8371593Niko Catania string& append(const string& str); 161fe47ae56a8808c836923466e44704db3a8371593Niko Catania 16260fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // Comparison. 163fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return 0 if this==other, < 0 if this < other and > 0 if this > other. 164fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Don't assume the values are -1, 0, 1 165fe47ae56a8808c836923466e44704db3a8371593Niko Catania int compare(const string& other) const; 1667618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania int compare(const value_type *other) const; 167fe47ae56a8808c836923466e44704db3a8371593Niko Catania 168fe47ae56a8808c836923466e44704db3a8371593Niko Catania friend bool operator==(const string& left, const string& right); 1697618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania friend bool operator==(const string& left, const value_type *right); 1707618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania friend bool operator==(const value_type *left, const string& right) { return right == left; } 171fe47ae56a8808c836923466e44704db3a8371593Niko Catania friend bool operator!=(const string& left, const string& right) { return !(left == right); } 172fe47ae56a8808c836923466e44704db3a8371593Niko Catania friend bool operator!=(const string& left, const char* right) { return !(left == right); } 1737618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania friend bool operator!=(const value_type *left, const string& right) { return !(left == right); } 174fe47ae56a8808c836923466e44704db3a8371593Niko Catania 175fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return Number of elements for which memory has been allocated. capacity >= size(). 1767618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania size_type capacity() const { return mCapacity; } 177fe47ae56a8808c836923466e44704db3a8371593Niko Catania 178d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // Change the capacity to new_size. No effect if new_size < size(). 179d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // 0 means Shrink to fit. 180fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param new_size number of character to be allocated. 1817618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania void reserve(size_type new_size = 0); 182fe47ae56a8808c836923466e44704db3a8371593Niko Catania 183fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Exchange the content of this with the content of other. 184fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param other Instance to swap this one with. 185fe47ae56a8808c836923466e44704db3a8371593Niko Catania void swap(string& other); 186fe47ae56a8808c836923466e44704db3a8371593Niko Catania 187fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Accessors. 188d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param pos of the char. No boundary, signed checks are done. 189fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return a const reference to the char. 190d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania const char& operator[](const size_type pos) const; 191d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania 192d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param pos of the char. No boundary, signed checks are done. 193fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @return a reference to the char. 194d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania char& operator[](const size_type pos); 195fe47ae56a8808c836923466e44704db3a8371593Niko Catania 196fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Assignments. 197fe47ae56a8808c836923466e44704db3a8371593Niko Catania string& operator=(const string& str) { return assign(str); } 198fe47ae56a8808c836923466e44704db3a8371593Niko Catania string& operator=(const char* str) { return assign(str); } 199fe47ae56a8808c836923466e44704db3a8371593Niko Catania string& operator=(char c); 200fe47ae56a8808c836923466e44704db3a8371593Niko Catania 201fe47ae56a8808c836923466e44704db3a8371593Niko Catania string& assign(const string& str); 202d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // Assign a substring of the original. 203fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param str Original string. 204fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param pos Index of the start of the copy. 205d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param n Number of character to be copied. 206d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania string& assign(const string& str, size_type pos, size_type n); 2077618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania string& assign(const value_type *str); 208d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania 209d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // Assign a non-nul terminated array of chars. 210d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania // @param array Of chars non-nul terminated. 211fe47ae56a8808c836923466e44704db3a8371593Niko Catania // @param len Length of the array. 2127618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania string& assign(const value_type *array, size_type len); 213fe47ae56a8808c836923466e44704db3a8371593Niko Catania 214fe47ae56a8808c836923466e44704db3a8371593Niko Catania // Concat. Prefer using += or append. 21560fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // Uses unnamed object for return value optimization. 216fe47ae56a8808c836923466e44704db3a8371593Niko Catania friend string operator+(const string& left, const string& right) { 217fe47ae56a8808c836923466e44704db3a8371593Niko Catania return string(left).append(right); 218fe47ae56a8808c836923466e44704db3a8371593Niko Catania } 2197618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania friend string operator+(const string& left, const value_type *right) { 220fe47ae56a8808c836923466e44704db3a8371593Niko Catania return string(left).append(right); 221fe47ae56a8808c836923466e44704db3a8371593Niko Catania } 2227618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania friend string operator+(const value_type *left, const string& right) { 223fe47ae56a8808c836923466e44704db3a8371593Niko Catania return string(left).append(right); 224fe47ae56a8808c836923466e44704db3a8371593Niko Catania } 225fe47ae56a8808c836923466e44704db3a8371593Niko Catania friend string operator+(const string& left, char right) { 226fe47ae56a8808c836923466e44704db3a8371593Niko Catania return string(left).operator+=(right); 227fe47ae56a8808c836923466e44704db3a8371593Niko Catania } 228fe47ae56a8808c836923466e44704db3a8371593Niko Catania friend string operator+(char left, const string& right) { 229fe47ae56a8808c836923466e44704db3a8371593Niko Catania return string(&left, 1).append(right); 230fe47ae56a8808c836923466e44704db3a8371593Niko Catania } 231fe47ae56a8808c836923466e44704db3a8371593Niko Catania 232d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // Find the position of a sub-string. The empty string is always 233d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // found at the requested position except when it's beyond the 234d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // string's end. 235d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // @param str String to locate. 236d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // @param pos Index of the character to search from. Default to 0. 23760fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // @return Index of start of the first occurrence of the 23860fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // string. string::npos if no occurrence of str was found from the 239d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // starting position. 240d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania size_type find(const string& str, size_type pos = 0) const { 24160fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania return find(str.mData, pos); 242d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania } 243d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania 244d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // Find the position of a C sub-string. The empty string is always 245d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // found at the requested position except when it's beyond the 246d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // string's end. 247d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // @param str C string to locate. 248d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // @param pos Index of the character to search from. Default to 0. 24960fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // @return Index of start of the first occurrence of the 25060fd0f758a63e74980d712a13c91bc24d98cedc6Nicolas Catania // string. string::npos if no occurrence of str was found from the 251d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania // starting position. 2527618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania size_type find(const value_type *str, size_type pos = 0) const; 253d738d268c8f915bde451bba52e0c3996113ba9f0Nicolas Catania 25491ea6c037471a1acd97b03c3097223777906f748Nicolas Catania // Iterators 25591ea6c037471a1acd97b03c3097223777906f748Nicolas Catania iterator begin() {return iterator(mData);} 25691ea6c037471a1acd97b03c3097223777906f748Nicolas Catania const_iterator begin() const {return const_iterator(mData);} 25791ea6c037471a1acd97b03c3097223777906f748Nicolas Catania iterator end() {return iterator(mData + mLength);} 25891ea6c037471a1acd97b03c3097223777906f748Nicolas Catania const_iterator end() const {return const_iterator(mData + mLength);} 25991ea6c037471a1acd97b03c3097223777906f748Nicolas Catania 260fe47ae56a8808c836923466e44704db3a8371593Niko Catania private: 261d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania bool SafeMalloc(size_type n); 262d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania void SafeRealloc(size_type n); 2637618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania void SafeFree(value_type *str); 2647618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania void ResetTo(value_type *str); 265fe47ae56a8808c836923466e44704db3a8371593Niko Catania void ConstructEmptyString(); 266d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania void Constructor(const value_type *str, size_type n); 267d881e3f36a074eb9fd8e353fb5e5e3e539f2d460Nicolas Catania void Constructor(const value_type *str, size_type pos, size_type n); 2687618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania void Constructor(size_type num, char c); 269fe47ae56a8808c836923466e44704db3a8371593Niko Catania void DeleteSafe(); 2707618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania void Append(const value_type *str, size_type len); 271fe47ae56a8808c836923466e44704db3a8371593Niko Catania 2727618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania value_type *mData; // pointer to the buffer 2737618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania size_type mCapacity; // size of the buffer. 2747618d7b9a011b1158ef868d6ae3ead242ddaccacNicolas Catania size_type mLength; // len of the string excl. null-terminator. 275fe47ae56a8808c836923466e44704db3a8371593Niko Catania}; 276fe47ae56a8808c836923466e44704db3a8371593Niko Catania 277fe47ae56a8808c836923466e44704db3a8371593Niko Catania} // namespace std 278fe47ae56a8808c836923466e44704db3a8371593Niko Catania 279fe47ae56a8808c836923466e44704db3a8371593Niko Catania#endif // ANDROID_ASTL_STRING__ 280