1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
118 lines
3.6 KiB
C++
118 lines
3.6 KiB
C++
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2013 David Chisnall
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _UTIL_HH_
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#define _UTIL_HH_
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#include <vector>
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// If we aren't using C++11, then just ignore static asserts.
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#if __cplusplus < 201103L
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#ifndef static_assert
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#define static_assert(x, y) ((void)0)
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#endif
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#endif
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namespace dtc {
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/**
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* Type for a buffer of bytes. This is used for a lot of short-lived temporary
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* variables, so may eventually be changed to something like LLVM's
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* SmallVector, but currently the program runs in a tiny fraction of a second,
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* so this is not an issue.
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*/
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typedef std::vector<uint8_t> byte_buffer;
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/**
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* Helper function to push a big endian value into a byte buffer. We use
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* native-endian values for all of the in-memory data structures and only
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* transform them into big endian form for output.
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*/
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template<typename T>
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inline void push_big_endian(byte_buffer &v, T val)
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{
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static_assert(sizeof(T) > 1,
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"Big endian doesn't make sense for single-byte values");
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for (int bit=(sizeof(T) - 1)*8 ; bit>=0 ; bit-= 8)
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{
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v.push_back((val >> bit) & 0xff);
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}
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}
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void push_string(byte_buffer &v, const std::string &s, bool escapes=false);
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/**
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* Simple inline non-locale-aware check that this is a valid ASCII
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* digit.
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*/
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inline bool isdigit(char c)
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{
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return (c >= '0') && (c <= '9');
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}
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/**
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* Simple inline non-locale-aware check that this is a valid ASCII
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* hex digit.
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*/
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inline bool ishexdigit(char c)
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{
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return ((c >= '0') && (c <= '9')) || ((c >= 'a') && (c <= 'f')) ||
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((c >= 'A') && (c <= 'F'));
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}
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/**
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* Simple inline non-locale-aware check that this is a valid ASCII
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* letter.
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*/
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inline bool isalpha(char c)
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{
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return ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'));
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}
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/**
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* A wrapper around dirname(3) that handles inconsistencies relating to memory
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* management between platforms and provides a std::string interface.
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*/
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std::string dirname(const std::string&);
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/**
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* A wrapper around basename(3) that handles inconsistencies relating to memory
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* management between platforms and provides a std::string interface.
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*/
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std::string basename(const std::string&);
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}// namespace dtc
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#endif // !_UTIL_HH_
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