2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2013 David Chisnall
7 * This software was developed by SRI International and the University of
8 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
9 * ("CTSRD"), as part of the DARPA CRASH research programme.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 // If we aren't using C++11, then just ignore static asserts.
44 #if __cplusplus < 201103L
46 #define static_assert(x, y) ((void)0)
50 #ifdef MISSING_DIGITTOINT
54 * Glibc doesn't have a definition of digittoint, so provide our own.
56 inline int digittoint(int c)
85 * Type for a buffer of bytes. This is used for a lot of short-lived temporary
86 * variables, so may eventually be changed to something like LLVM's
87 * SmallVector, but currently the program runs in a tiny fraction of a second,
88 * so this is not an issue.
90 typedef std::vector<uint8_t> byte_buffer;
93 * Helper function to push a big endian value into a byte buffer. We use
94 * native-endian values for all of the in-memory data structures and only
95 * transform them into big endian form for output.
98 inline void push_big_endian(byte_buffer &v, T val)
100 static_assert(sizeof(T) > 1,
101 "Big endian doesn't make sense for single-byte values");
102 for (int bit=(sizeof(T) - 1)*8 ; bit>=0 ; bit-= 8)
104 v.push_back((val >> bit) & 0xff);
108 void push_string(byte_buffer &v, const std::string &s, bool escapes=false);
111 * Simple inline non-locale-aware check that this is a valid ASCII
114 inline bool isdigit(char c)
116 return (c >= '0') && (c <= '9');
120 * Simple inline non-locale-aware check that this is a valid ASCII
123 inline bool ishexdigit(char c)
125 return ((c >= '0') && (c <= '9')) || ((c >= 'a') && (c <= 'f')) ||
126 ((c >= 'A') && (c <= 'F'));
130 * Simple inline non-locale-aware check that this is a valid ASCII
133 inline bool isalpha(char c)
135 return ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'));
139 * A wrapper around dirname(3) that handles inconsistencies relating to memory
140 * management between platforms and provides a std::string interface.
142 std::string dirname(const std::string&);
145 * A wrapper around basename(3) that handles inconsistencies relating to memory
146 * management between platforms and provides a std::string interface.
148 std::string basename(const std::string&);