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
40 // If we aren't using C++11, then just ignore static asserts.
41 #if __cplusplus < 201103L
43 #define static_assert(x, y) ((void)0)
50 * Type for a buffer of bytes. This is used for a lot of short-lived temporary
51 * variables, so may eventually be changed to something like LLVM's
52 * SmallVector, but currently the program runs in a tiny fraction of a second,
53 * so this is not an issue.
55 typedef std::vector<uint8_t> byte_buffer;
58 * Helper function to push a big endian value into a byte buffer. We use
59 * native-endian values for all of the in-memory data structures and only
60 * transform them into big endian form for output.
63 inline void push_big_endian(byte_buffer &v, T val)
65 static_assert(sizeof(T) > 1,
66 "Big endian doesn't make sense for single-byte values");
67 for (int bit=(sizeof(T) - 1)*8 ; bit>=0 ; bit-= 8)
69 v.push_back((val >> bit) & 0xff);
73 void push_string(byte_buffer &v, const std::string &s, bool escapes=false);
76 * Simple inline non-locale-aware check that this is a valid ASCII
79 inline bool isdigit(char c)
81 return (c >= '0') && (c <= '9');
85 * Simple inline non-locale-aware check that this is a valid ASCII
88 inline bool ishexdigit(char c)
90 return ((c >= '0') && (c <= '9')) || ((c >= 'a') && (c <= 'f')) ||
91 ((c >= 'A') && (c <= 'F'));
95 * Simple inline non-locale-aware check that this is a valid ASCII
98 inline bool isalpha(char c)
100 return ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'));
104 * A wrapper around dirname(3) that handles inconsistencies relating to memory
105 * management between platforms and provides a std::string interface.
107 std::string dirname(const std::string&);
110 * A wrapper around basename(3) that handles inconsistencies relating to memory
111 * management between platforms and provides a std::string interface.
113 std::string basename(const std::string&);