commit db458ec8ec1724dc5d36fc9fd3fc715e1c49458e
Author: Petar Yotsev <petar@yotsev.xyz>
Date: Tue, 16 Jun 2020 10:55:34 +0100
Initial commit
Diffstat:
| A | LICENSE | | | 339 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | Makefile | | | 15 | +++++++++++++++ |
| A | README.md | | | 62 | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | main.cpp | | | 220 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
4 files changed, 636 insertions(+), 0 deletions(-)
diff --git a/LICENSE b/LICENSE
@@ -0,0 +1,339 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
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+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
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+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
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+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
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+ Finally, any free program is threatened constantly by software
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+
+ The precise terms and conditions for copying, distribution and
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+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
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+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
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+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
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+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
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+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
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+Thus, it is not the intent of this section to claim rights or contest
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+In addition, mere aggregation of another work not based on the Program
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+a storage or distribution medium does not bring the other work under
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+
+This section is intended to make thoroughly clear what is believed to
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+
+ 8. If the distribution and/or use of the Program is restricted in
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+ 10. If you wish to incorporate parts of the Program into other free
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+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program 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 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/Makefile b/Makefile
@@ -0,0 +1,15 @@
+CC = g++
+CC_FLAGS = -lGL -lboost_iostreams -lboost_serialization
+
+EXEC = markly
+SOURCES = $(wildcard *.cpp)
+OBJECTS = $(SOURCES:.cpp=.o)
+
+$(EXEC): $(OBJECTS)
+ $(CC) $(OBJECTS) -o $(EXEC) $(CC_FLAGS)
+
+%.o: %.cpp
+ $(CC) -c $(CC_FLAGS) $< -o $@
+
+clean:
+ rm -f $(EXEC) $(OBJECTS)
diff --git a/README.md b/README.md
@@ -0,0 +1,62 @@
+# markly
+
+---
+
+A Markov chain implementation focused on text generation.
+
+## Dependencies
+
+* boost libraries and headers
+
+To install them on arch:
+
+ pacman -S boost-libs boost
+
+## Installation
+
+ git clone https://git.sr.ht/~petar-yotsev/markly
+ cd markly
+ make
+
+## Usage examples
+
+Generating 10000 usernames at order 3 and length 10 that resemble the ones in
+names.txt:
+
+ ./markly -s -f names.txt -o 3 -l 10 -n 10000
+
+Continuously generating usernames at order 3 and length 10:
+
+ ./markly -s -f names.txt -o 3 -l 10 -c
+
+Continuously generating usernames at order 3 and maximum length:
+
+ ./markly -s -f names.txt -o 3 -m -c
+
+Generating a continuous username by resetting the gram when nothing follows:
+
+ ./markly -s -f names.txt -o 3 -m -c > username.tmp
+ cat username.tmp | tr -d '\n' > username
+ rm username.tmp
+
+Generating continuous text resembling that of book.txt:
+
+ ./markly -f book.txt -o 5 -m -c
+
+Saving a compiled chain for later use:
+
+ ./markly -g book.txt -o 3
+ # produces chain.o3
+ ./markly -s -g names.txt names -o 3
+ # produces names.o3
+
+Using a compiled chain:
+
+ ./markly -c chain.o3 -n 5 -m
+ ./markly -c names.o3 -n 10000 -l 10
+
+## Options
+
+## License
+
+GPLv2
diff --git a/main.cpp b/main.cpp
@@ -0,0 +1,220 @@
+#include <boost/archive/binary_iarchive.hpp>
+#include <boost/archive/binary_oarchive.hpp>
+#include <boost/serialization/map.hpp>
+#include <boost/serialization/string.hpp>
+#include <boost/serialization/vector.hpp>
+#include <fstream>
+#include <iostream>
+#include <map>
+#include <string>
+#include <unistd.h>
+#include <vector>
+
+using namespace std;
+
+unsigned long mix(unsigned long a, unsigned long b, unsigned long c)
+{
+ a = a - b;
+ a = a - c;
+ a = a ^ (c >> 13);
+ b = b - c;
+ b = b - a;
+ b = b ^ (a << 8);
+ c = c - a;
+ c = c - b;
+ c = c ^ (b >> 13);
+ a = a - b;
+ a = a - c;
+ a = a ^ (c >> 12);
+ b = b - c;
+ b = b - a;
+ b = b ^ (a << 16);
+ c = c - a;
+ c = c - b;
+ c = c ^ (b >> 5);
+ a = a - b;
+ a = a - c;
+ a = a ^ (c >> 3);
+ b = b - c;
+ b = b - a;
+ b = b ^ (a << 10);
+ c = c - a;
+ c = c - b;
+ c = c ^ (b >> 15);
+ return c;
+}
+
+struct chain {
+ friend class boost::serialization::access;
+ template <class Archive>
+ void serialize(Archive& ar, const unsigned int version)
+ {
+ ar& format;
+ ar& order;
+ ar& ngram;
+ ar& beginnings;
+ }
+ char format;
+ int order;
+ map<string, vector<char>> ngram;
+ vector<string> beginnings;
+};
+
+int main(int argc, char** argv)
+{
+ // seed the random generator with quality values
+ srand(mix(clock(), time(NULL), getpid()));
+
+ // declaring state
+ string filename;
+ string chain_filename = "chain";
+
+ char format = 'n';
+ int order = 3;
+ int length = 0;
+ int itterations = 1;
+
+ bool generating = true;
+ bool saving = false;
+ bool infinite = false;
+ bool continuous = false;
+ bool loud = false;
+
+ // processing arguments
+ string arg;
+ for (int i = 1; i < argc; ++i) {
+ arg = argv[i];
+ if (arg == "-g") {
+ filename = argv[i + 1];
+ if (argv[i + 2] && argv[i + 2][0] != '-')
+ chain_filename = argv[i + 2];
+ itterations = 0;
+ generating = true;
+ saving = true;
+ } else if (arg == "-c") {
+ chain_filename = argv[i + 1];
+ generating = false;
+ saving = false;
+ } else if (arg == "-f") {
+ filename = argv[i + 1];
+ generating = true;
+ saving = false;
+ } else if (arg == "-o") {
+ order = std::stoi(argv[i + 1]);
+ } else if (arg == "-l") {
+ length = std::stoi(argv[i + 1]);
+ } else if (arg == "-m") {
+ infinite = true;
+ } else if (arg == "-c") {
+ continuous = true;
+ } else if (arg == "-n") {
+ itterations = std::stoi(argv[i + 1]);
+ } else if (arg == "-s") {
+ format = 's';
+ } else if (arg == "-v") {
+ loud = true;
+ }
+ }
+
+ map<string, vector<char>> ngram;
+ vector<string> beginnings;
+
+ // loads the chain if it exists
+ if (!generating) {
+ ifstream ifs(chain_filename, ios::binary);
+ if (ifs.is_open()) {
+ if (loud)
+ cerr << "Loading chain from " << chain_filename << endl;
+ boost::archive::binary_iarchive ia(ifs);
+ chain c;
+ ia >> c;
+ format = c.format;
+ order = c.order;
+ ngram = c.ngram;
+ if (format == 's')
+ beginnings = c.beginnings;
+ } else {
+ cerr << "Error: file " << chain_filename << " does not exist\n";
+ return 1;
+ }
+ } else { // generates the chain
+ if (loud)
+ cerr << "Generating chain, this may take a while" << endl;
+ string line;
+ ifstream file(filename);
+ if (file.is_open()) {
+ if (format == 's') {
+ while (getline(file, line)) {
+ if (line.size() > order)
+ beginnings.push_back(line.substr(0, order));
+ for (int i = 1; i + order < line.size(); ++i) {
+ ngram[line.substr(i, order)].push_back(line[i + order]);
+ }
+ }
+ } else {
+ while (getline(file, line)) {
+ for (int i = 0; i + order < line.size(); ++i) {
+ ngram[line.substr(i, order)].push_back(line[i + order]);
+ }
+ }
+ }
+ file.close();
+ } else {
+ cerr << "Error: file " << filename << " does not exist\n";
+ return 1;
+ }
+ }
+ if (saving) {
+ // saves the chain
+ chain_filename += ".o";
+ chain_filename += std::to_string(order);
+ if (loud)
+ cerr << "Saving chain to " << chain_filename << endl;
+ ofstream ofs(chain_filename, ios::binary);
+ boost::archive::binary_oarchive oa(ofs);
+ chain c;
+ c.format = format;
+ c.order = order;
+ c.ngram = ngram;
+ if (format == 's')
+ c.beginnings = beginnings;
+ oa << c;
+ }
+
+ for (int i = 0; i < itterations || continuous; ++i) {
+ string cgram;
+ // get random starting gram
+ if (format == 's') {
+ do {
+ cgram = beginnings[rand() % beginnings.size()];
+ } while (ngram[cgram].size() == 0);
+ } else {
+ std::map<string, vector<char>>::iterator it;
+ do {
+ it = ngram.begin();
+ for (int i = 0; i < rand() % ngram.size(); ++i) {
+ ++it;
+ }
+ cgram = it->first;
+ } while (ngram[cgram].size() == 0);
+ }
+ string result = cgram;
+ cout << result;
+ char next = ngram[cgram][rand() % ngram[cgram].size()];
+
+ // generate
+ for (int i = 0; i < length || infinite; ++i) {
+ result += next;
+ cout << next;
+ cgram = result.substr(result.length() - order, order);
+ if (ngram[cgram].size() == 0) {
+ break;
+ }
+ next = ngram[cgram][rand() % ngram[cgram].size()];
+ }
+ if (format == 's')
+ cout << endl;
+ }
+
+ return 0;
+}
