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126 lines
3.8 KiB
126 lines
3.8 KiB
/*
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Copyright (c) 2018-2019, tevador <tevador@gmail.com>
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All rights reserved.
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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 are met:
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* 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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* 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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* Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <cstring>
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#include <cstdlib>
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#include <iostream>
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#include <fstream>
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#include <cstdint>
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constexpr char hexmap[] = "0123456789abcdef";
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inline void outputHex(std::ostream& os, const char* data, int length) {
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for (int i = 0; i < length; ++i) {
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os << hexmap[(data[i] & 0xF0) >> 4];
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os << hexmap[data[i] & 0x0F];
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}
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}
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char parseNibble(char hex) {
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hex &= ~0x20;
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if (hex & 0x40) {
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hex -= 'A' - 10;
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}
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else {
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hex &= 0xf;
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}
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return hex;
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}
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void hex2bin(const char *in, int length, char *out) {
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for (int i = 0; i < length; i += 2) {
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char nibble1 = parseNibble(*in++);
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char nibble2 = parseNibble(*in++);
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*out++ = nibble1 << 4 | nibble2;
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}
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}
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constexpr bool stringsEqual(char const * a, char const * b) {
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return *a == *b && (*a == '\0' || stringsEqual(a + 1, b + 1));
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}
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template<size_t N>
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bool equalsHex(const void* hash, const char (&hex)[N]) {
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char reference[N / 2];
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hex2bin(hex, N - 1, reference);
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return memcmp(hash, reference, sizeof(reference)) == 0;
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}
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inline void dump(const char* buffer, uint64_t count, const char* name) {
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std::ofstream fout(name, std::ios::out | std::ios::binary);
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fout.write(buffer, count);
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fout.close();
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}
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inline void readOption(const char* option, int argc, char** argv, bool& out) {
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for (int i = 0; i < argc; ++i) {
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if (strcmp(argv[i], option) == 0) {
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out = true;
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return;
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}
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}
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out = false;
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}
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inline void readIntOption(const char* option, int argc, char** argv, int& out, int defaultValue) {
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for (int i = 0; i < argc - 1; ++i) {
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if (strcmp(argv[i], option) == 0 && (out = atoi(argv[i + 1])) > 0) {
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return;
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}
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}
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out = defaultValue;
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}
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inline void readUInt64Option(const char* option, int argc, char** argv, uint64_t& out, uint64_t defaultValue) {
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for (int i = 0; i < argc - 1; ++i) {
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if (strcmp(argv[i], option) == 0 && (out = std::strtoull(argv[i + 1], NULL, 0)) > 0) {
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return;
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}
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}
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out = defaultValue;
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}
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inline void readFloatOption(const char* option, int argc, char** argv, double& out, double defaultValue) {
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for (int i = 0; i < argc - 1; ++i) {
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if (strcmp(argv[i], option) == 0 && (out = atof(argv[i + 1])) > 0) {
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return;
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}
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}
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out = defaultValue;
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}
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inline void readInt(int argc, char** argv, int& out, int defaultValue) {
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for (int i = 0; i < argc; ++i) {
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if (*argv[i] != '-' && (out = atoi(argv[i])) > 0) {
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return;
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}
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}
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out = defaultValue;
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}
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