/* * Copyright (C) 2007 Andre Noll * * Licensed under the GPL v2. For licencing details see COPYING. */ /** \file portable_io.h Inline functions for binary IO. */ static inline uint64_t read_portable(unsigned bits, const char *buf) { uint64_t ret = 0; int i, num_bytes = bits / 8; for (i = 0; i < num_bytes; i++) { unsigned char c = buf[i]; ret += ((uint64_t)c << (8 * i)); } return ret; } static inline uint64_t read_portable_be(unsigned bits, const char *buf) { uint64_t ret = 0; int i, num_bytes = bits / 8; for (i = 0; i < num_bytes; i++) { unsigned char c = buf[i]; ret += ((uint64_t)c << (8 * (num_bytes - i - 1))); } return ret; } static inline uint64_t read_u64(const char *buf) { return read_portable(64, buf); } static inline uint32_t read_u32(const char *buf) { return read_portable(32, buf); } static inline uint16_t read_u16(const char *buf) { return read_portable(16, buf); } static inline uint8_t read_u8(const char *buf) { return read_portable(8, buf); } static inline uint64_t read_u64_be(const char *buf) { return read_portable_be(64, buf); } static inline uint32_t read_u32_be(const char *buf) { return read_portable_be(32, buf); } static inline uint16_t read_u16_be(const char *buf) { return read_portable_be(16, buf); } static inline void write_portable(unsigned bits, char *buf, uint64_t val) { int i, num_bytes = bits / 8; for (i = 0; i < num_bytes; i++) { buf[i] = val & 0xff; val = val >> 8; } } static inline void write_portable_be(unsigned bits, char *buf, uint64_t val) { int i, num_bytes = bits / 8; for (i = 0; i < num_bytes; i++) { buf[num_bytes - i - 1] = val & 0xff; val = val >> 8; } } static inline void write_u64(char *buf, uint64_t val) { write_portable(64, buf, val); } static inline void write_u32(char *buf, uint32_t val) { write_portable(32, buf, (uint64_t) val); } static inline void write_u16(char *buf, uint16_t val) { write_portable(16, buf, (uint64_t) val); } static inline void write_u8(char *buf, uint8_t val) { write_portable(8, buf, (uint64_t) val); } static inline void write_u64_be(char *buf, uint64_t val) { write_portable_be(64, buf, val); } static inline void write_u32_be(char *buf, uint32_t val) { write_portable_be(32, buf, (uint64_t) val); } static inline void write_u16_be(char *buf, uint16_t val) { write_portable_be(16, buf, (uint64_t) val); }