/usr/include/jellyfish/file_header.hpp is in libjellyfish-2.0-dev 2.2.8-3build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 | /* This file is part of Jellyfish.
Jellyfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Jellyfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Jellyfish. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __JELLYFISH_FILE_HEADER_HPP__
#define __JELLYFISH_FILE_HEADER_HPP__
#include <string>
#include <jellyfish/generic_file_header.hpp>
#include <jellyfish/rectangular_binary_matrix.hpp>
namespace jellyfish {
/// A header with jellyfish hash specific entries: size, matrix, etc.
class file_header : public generic_file_header {
public:
file_header() : generic_file_header(sizeof(uint64_t)) { }
file_header(std::istream& is) : generic_file_header(sizeof(uint64_t)) {
this->read(is);
}
template<typename storage>
void update_from_ary(const storage& ary) {
this->size(ary.size());
this->key_len(ary.key_len());
this->val_len(ary.val_len());
this->matrix(ary.matrix());
this->max_reprobe(ary.max_reprobe());
this->set_reprobes(ary.reprobes());
}
RectangularBinaryMatrix matrix(int i = 1) const {
std::string name("matrix");
name += std::to_string((long long int)i); // Cast to make gcc4.4 happy!
const unsigned int r = root_[name]["r"].asUInt();
const unsigned int c = root_[name]["c"].asUInt();
if(root_[name]["identity"].asBool())
return RectangularBinaryMatrix::identity(r, c);
std::vector<uint64_t> raw(c, (uint64_t)0);
for(unsigned int i = 0; i < c; ++i)
raw[i] = root_[name]["columns"][i].asUInt64();
return RectangularBinaryMatrix(raw.data(), r, c);
}
void matrix(const RectangularBinaryMatrix& m, int i = 1) {
std::string name("matrix");
name += std::to_string((long long int)i);
root_[name].clear();
root_[name]["r"] = m.r();
root_[name]["c"] = m.c();
if(m.is_low_identity()) {
root_[name]["identity"] = true;
} else {
root_[name]["identity"] = false;
for(unsigned int i = 0; i < m.c(); ++i) {
Json::UInt64 x = m[i];
root_[name]["columns"].append(x);
}
}
}
size_t size() const { return root_["size"].asLargestUInt(); }
void size(size_t s) { root_["size"] = (Json::UInt64)s; }
unsigned int key_len() const { return root_["key_len"].asUInt(); }
void key_len(unsigned int k) { root_["key_len"] = (Json::UInt)k; }
unsigned int val_len() const { return root_["val_len"].asUInt(); }
void val_len(unsigned int k) { root_["val_len"] = (Json::UInt)k; }
unsigned int max_reprobe() const { return root_["max_reprobe"].asUInt(); }
void max_reprobe(unsigned int m) { root_["max_reprobe"] = (Json::UInt)m; }
size_t max_reprobe_offset() const { return root_["reprobes"][max_reprobe()].asLargestUInt(); }
double fpr() const { return root_["fpr"].asDouble(); }
void fpr(double f) { root_["fpr"] = f; }
unsigned long nb_hashes() const { return root_["nb_hashes"].asUInt(); }
void nb_hashes(unsigned long nbh) { root_["nb_hashes"] = (Json::UInt)nbh; }
bool canonical() const { return root_.get("canonical", false).asBool(); }
void canonical(bool v) { root_["canonical"] = v; }
/// reprobes must be at least max_reprobe() + 1 long
void get_reprobes(size_t* reprobes) const {
for(unsigned int i = 0; i <= max_reprobe(); ++i)
reprobes[i] = root_["reprobes"][i].asLargestUInt();
}
/// This must be call after max_reprobe has been set. reprobes must
/// be at least max_reprobe() + 1 long.
void set_reprobes(const size_t* reprobes) {
root_["reprobes"].clear();
for(unsigned int i = 0; i <= max_reprobe(); ++i)
root_["reprobes"].append((Json::UInt64)reprobes[i]);
}
/// Length of counter field in binary/sorted format
unsigned int counter_len() const { return root_["counter_len"].asUInt(); }
void counter_len(unsigned int l) { root_["counter_len"] = (Json::UInt)l; }
std::string format() const { return root_["format"].asString(); }
void format(const std::string& s) { root_["format"] = s; }
};
} // namespace jellyfish
#endif /* __JELLYFISH_FILE_HEADER_HPP__ */
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