mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-04 09:09:56 +00:00
d37eb02eb9
Highlights: - Bugfix for order in which /delete-node/ and /delete-property/ are processed [0] - /omit-if-no-ref/ support has been added (used only by U-Boot at this point, in theory) - GPL dtc compat version bumped to 1.4.7 - Various small fixes and compatibility improvements Reported by: strejda [0] MFC after: 1 week
153 lines
4.3 KiB
C++
153 lines
4.3 KiB
C++
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2013 David Chisnall
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by SRI International and the University of
|
|
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
|
|
* ("CTSRD"), as part of the DARPA CRASH research programme.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _UTIL_HH_
|
|
#define _UTIL_HH_
|
|
|
|
#include <memory>
|
|
#include <stdint.h>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
// If we aren't using C++11, then just ignore static asserts.
|
|
#if __cplusplus < 201103L
|
|
#ifndef static_assert
|
|
#define static_assert(x, y) ((void)0)
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef MISSING_DIGITTOINT
|
|
namespace
|
|
{
|
|
/**
|
|
* Glibc doesn't have a definition of digittoint, so provide our own.
|
|
*/
|
|
inline int digittoint(int c)
|
|
{
|
|
switch (c)
|
|
{
|
|
default:
|
|
case '0': return 0;
|
|
case '1': return 1;
|
|
case '2': return 2;
|
|
case '3': return 3;
|
|
case '4': return 4;
|
|
case '5': return 5;
|
|
case '6': return 6;
|
|
case '7': return 7;
|
|
case '8': return 8;
|
|
case '9': return 9;
|
|
case 'a': return 10;
|
|
case 'b': return 11;
|
|
case 'c': return 12;
|
|
case 'd': return 13;
|
|
case 'e': return 14;
|
|
case 'f': return 15;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
namespace dtc {
|
|
|
|
/**
|
|
* Type for a buffer of bytes. This is used for a lot of short-lived temporary
|
|
* variables, so may eventually be changed to something like LLVM's
|
|
* SmallVector, but currently the program runs in a tiny fraction of a second,
|
|
* so this is not an issue.
|
|
*/
|
|
typedef std::vector<uint8_t> byte_buffer;
|
|
|
|
/**
|
|
* Helper function to push a big endian value into a byte buffer. We use
|
|
* native-endian values for all of the in-memory data structures and only
|
|
* transform them into big endian form for output.
|
|
*/
|
|
template<typename T>
|
|
inline void push_big_endian(byte_buffer &v, T val)
|
|
{
|
|
static_assert(sizeof(T) > 1,
|
|
"Big endian doesn't make sense for single-byte values");
|
|
for (int bit=(sizeof(T) - 1)*8 ; bit>=0 ; bit-= 8)
|
|
{
|
|
v.push_back((val >> bit) & 0xff);
|
|
}
|
|
}
|
|
|
|
void push_string(byte_buffer &v, const std::string &s, bool escapes=false);
|
|
|
|
/**
|
|
* Simple inline non-locale-aware check that this is a valid ASCII
|
|
* digit.
|
|
*/
|
|
inline bool isdigit(char c)
|
|
{
|
|
return (c >= '0') && (c <= '9');
|
|
}
|
|
|
|
/**
|
|
* Simple inline non-locale-aware check that this is a valid ASCII
|
|
* hex digit.
|
|
*/
|
|
inline bool ishexdigit(char c)
|
|
{
|
|
return ((c >= '0') && (c <= '9')) || ((c >= 'a') && (c <= 'f')) ||
|
|
((c >= 'A') && (c <= 'F'));
|
|
}
|
|
|
|
/**
|
|
* Simple inline non-locale-aware check that this is a valid ASCII
|
|
* letter.
|
|
*/
|
|
inline bool isalpha(char c)
|
|
{
|
|
return ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'));
|
|
}
|
|
|
|
/**
|
|
* A wrapper around dirname(3) that handles inconsistencies relating to memory
|
|
* management between platforms and provides a std::string interface.
|
|
*/
|
|
std::string dirname(const std::string&);
|
|
|
|
/**
|
|
* A wrapper around basename(3) that handles inconsistencies relating to memory
|
|
* management between platforms and provides a std::string interface.
|
|
*/
|
|
std::string basename(const std::string&);
|
|
|
|
}// namespace dtc
|
|
|
|
#endif // !_UTIL_HH_
|