1f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania/* -*- c++ -*- */ 2f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania/* 3f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * Copyright (C) 2010 The Android Open Source Project 4f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * All rights reserved. 5f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * 6f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * Redistribution and use in source and binary forms, with or without 7f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * modification, are permitted provided that the following conditions 8f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * are met: 9f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * * Redistributions of source code must retain the above copyright 10f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * notice, this list of conditions and the following disclaimer. 11f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * * Redistributions in binary form must reproduce the above copyright 12f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * notice, this list of conditions and the following disclaimer in 13f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * the documentation and/or other materials provided with the 14f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * distribution. 15f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * 16f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 19f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 20f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 23f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 24f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 26f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania * SUCH DAMAGE. 28f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania */ 29f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 30f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania#ifndef ANDROID_ASTL_CHAR_TRAITS_H__ 31f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania#define ANDROID_ASTL_CHAR_TRAITS_H__ 32f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 33f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania#include <ios_pos_types.h> // For streampos 34f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania#include <cstdio> // For EOF 35f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania#include <cstring> // For memcmp, memchr, strlen 36f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 37f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catanianamespace std { 38f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 39f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania/** 40743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Catania * char_traits defines the basic types and constants (eof) used in 41743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Catania * string and stream as well as basic char manipulations. 42743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Catania * Android's support only char. The state_type is missing because we 43743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Catania * don't support multibyte strings. 44f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania */ 45f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 46743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Cataniatemplate<class _CharT> struct char_traits { 47743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Catania // Empty on purpose. You should use char_traits<char> only. 48743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Catania}; 49743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Catania 50743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Cataniatemplate<> 51743c6a2694bf16bf29d516c906363199a7bccf86Nicolas Cataniastruct char_traits<char> 52f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania{ 53f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef char char_type; 54f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef int int_type; 55f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef streampos pos_type; 56f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania typedef streamoff off_type; 57f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 58f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static void assign(char& lhs, const char& rhs) { lhs = rhs; } 59f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 60f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static bool eq(const char& lhs, const char& rhs) { return lhs == rhs; } 61f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 62f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static bool lt(const char& lhs, const char& rhs) { return lhs < rhs; } 63f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 64f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static int compare(const char* lhs, const char* rhs, size_t n) 65f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania { return std::memcmp(lhs, rhs, n); } 66f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 67f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static size_t length(const char* str) { return std::strlen(str); } 68f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 69f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static const char* find(const char* str, size_t n, const char& c) 70f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania { return static_cast<const char*>(std::memchr(str, c, n)); } 71f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 72f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static char* move(char* lhs, const char* rhs, size_t n) 73f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania { return static_cast<char*>(std::memmove(lhs, rhs, n)); } 74f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 75f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static char* copy(char* lhs, const char* rhs, size_t n) 76f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania { return static_cast<char*>(std::memcpy(lhs, rhs, n)); } 77f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 78f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania // Fill 'lhs' with 'n' occurences of 'c' 79f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static char* assign(char* lhs, size_t n, char c) 80f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania { return static_cast<char*>(std::memset(lhs, c, n)); } 81f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 82f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static char to_char(const int_type& c) { return static_cast<char>(c); } 83f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 84f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static int_type to_int_type(const char& c) 85f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania { return static_cast<int_type>(static_cast<unsigned char>(c)); } 86f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 87f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static bool eq_int_type(const int_type& lhs, const int_type& rhs) 88f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania { return lhs == rhs; } 89f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 90f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static int_type eof() { return static_cast<int_type>(EOF); } 91f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 92f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania static int_type not_eof(const int_type& c) 93f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania { return (c == eof()) ? 0 : c; } 94f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania }; 95f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 96f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania} // namespace std 97f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania 98f31fdb2e57186a552855e27f55036369ec1c279aNicolas Catania#endif 99