1/* -*- c++ -*- */ 2/* 3 * Copyright (C) 2010 The Android Open Source Project 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in 13 * the documentation and/or other materials provided with the 14 * distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 20 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 23 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#ifndef ANDROID_ASTL_IOS_POS_TYPES__ 31#define ANDROID_ASTL_IOS_POS_TYPES__ 32 33#include <cstddef> // ptrdiff_t 34namespace std { 35 36// Type use by fpos. 37typedef long long streamoff; 38 39// Signed type for I/O operation counts and buffer sizes. 40typedef ptrdiff_t streamsize; 41 42// In the regular STL fpos is a template which gets specialized for 43// char and wchar and defines 2 types streampos and wstreampos. Since 44// we don't support wchar, we just provide the final char compliant 45// version. The methods to get/set the mbstate in fpos are not 46// provided. 47 48class fpos { 49 public: 50 fpos() : mOffs(0) { } 51 fpos(streamoff offs) : mOffs(offs) { } 52 53 // Convert to streamoff. 54 operator streamoff() const { return mOffs; } 55 56 // Not supported: 57 // void state(mbstate_t); 58 // mbstate_t state() const; 59 60 fpos& operator+=(streamoff offs); 61 fpos& operator-=(streamoff offs) { 62 return operator+=(-offs); 63 } 64 65 fpos operator+(streamoff offs) const; 66 fpos operator-(streamoff offs) const; 67 68 private: 69 streamoff mOffs; 70}; 71 72inline bool 73operator==(const fpos& lhs, const fpos& rhs) 74{ return streamoff(lhs) == streamoff(rhs); } 75 76inline bool 77operator!=(const fpos& lhs, const fpos& rhs) 78{ return streamoff(lhs) != streamoff(rhs); } 79 80typedef fpos streampos; 81 82} // namespace std 83 84#endif 85