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| 1 | +This program is free software; you can redistribute it and/or modify | |
| 2 | +it under the terms of the GNU General Public License as published by | |
| 3 | +the Free Software Foundation; either version 2 of the License, or | |
| 4 | +(at your option) any later version. | |
| 5 | + | |
| 6 | +This program is distributed in the hope that it will be useful, | |
| 7 | +but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 8 | +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 9 | +GNU General Public License for more details. | |
| 10 | + | |
| 11 | +You should have received a copy of the GNU General Public License | |
| 12 | +along with this program; if not, see <https://www.gnu.org/licenses/>. | |
| 13 | + | |
| 14 | + | |
| 15 | +=================================== | |
| 16 | + | |
| 17 | + | |
| 18 | + GNU GENERAL PUBLIC LICENSE | |
| 19 | + Version 2, June 1991 | |
| 20 | + | |
| 21 | + Copyright (C) 1989, 1991 Free Software Foundation, Inc., | |
| 22 | + <https://fsf.org/> | |
| 23 | + Everyone is permitted to copy and distribute verbatim copies | |
| 24 | + of this license document, but changing it is not allowed. | |
| 25 | + | |
| 26 | + Preamble | |
| 27 | + | |
| 28 | + The licenses for most software are designed to take away your | |
| 29 | +freedom to share and change it. By contrast, the GNU General Public | |
| 30 | +License is intended to guarantee your freedom to share and change free | |
| 31 | +software--to make sure the software is free for all its users. This | |
| 32 | +General Public License applies to most of the Free Software | |
| 33 | +Foundation's software and to any other program whose authors commit to | |
| 34 | +using it. (Some other Free Software Foundation software is covered by | |
| 35 | +the GNU Lesser General Public License instead.) You can apply it to | |
| 36 | +your programs, too. | |
| 37 | + | |
| 38 | + When we speak of free software, we are referring to freedom, not | |
| 39 | +price. Our General Public Licenses are designed to make sure that you | |
| 40 | +have the freedom to distribute copies of free software (and charge for | |
| 41 | +this service if you wish), that you receive source code or can get it | |
| 42 | +if you want it, that you can change the software or use pieces of it | |
| 43 | +in new free programs; and that you know you can do these things. | |
| 44 | + | |
| 45 | + To protect your rights, we need to make restrictions that forbid | |
| 46 | +anyone to deny you these rights or to ask you to surrender the rights. | |
| 47 | +These restrictions translate to certain responsibilities for you if you | |
| 48 | +distribute copies of the software, or if you modify it. | |
| 49 | + | |
| 50 | + For example, if you distribute copies of such a program, whether | |
| 51 | +gratis or for a fee, you must give the recipients all the rights that | |
| 52 | +you have. You must make sure that they, too, receive or can get the | |
| 53 | +source code. And you must show them these terms so they know their | |
| 54 | +rights. | |
| 55 | + | |
| 56 | + We protect your rights with two steps: (1) copyright the software, and | |
| 57 | +(2) offer you this license which gives you legal permission to copy, | |
| 58 | +distribute and/or modify the software. | |
| 59 | + | |
| 60 | + Also, for each author's protection and ours, we want to make certain | |
| 61 | +that everyone understands that there is no warranty for this free | |
| 62 | +software. If the software is modified by someone else and passed on, we | |
| 63 | +want its recipients to know that what they have is not the original, so | |
| 64 | +that any problems introduced by others will not reflect on the original | |
| 65 | +authors' reputations. | |
| 66 | + | |
| 67 | + Finally, any free program is threatened constantly by software | |
| 68 | +patents. We wish to avoid the danger that redistributors of a free | |
| 69 | +program will individually obtain patent licenses, in effect making the | |
| 70 | +program proprietary. To prevent this, we have made it clear that any | |
| 71 | +patent must be licensed for everyone's free use or not licensed at all. | |
| 72 | + | |
| 73 | + The precise terms and conditions for copying, distribution and | |
| 74 | +modification follow. | |
| 75 | + | |
| 76 | + GNU GENERAL PUBLIC LICENSE | |
| 77 | + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION | |
| 78 | + | |
| 79 | + 0. This License applies to any program or other work which contains | |
| 80 | +a notice placed by the copyright holder saying it may be distributed | |
| 81 | +under the terms of this General Public License. The "Program", below, | |
| 82 | +refers to any such program or work, and a "work based on the Program" | |
| 83 | +means either the Program or any derivative work under copyright law: | |
| 84 | +that is to say, a work containing the Program or a portion of it, | |
| 85 | +either verbatim or with modifications and/or translated into another | |
| 86 | +language. (Hereinafter, translation is included without limitation in | |
| 87 | +the term "modification".) Each licensee is addressed as "you". | |
| 88 | + | |
| 89 | +Activities other than copying, distribution and modification are not | |
| 90 | +covered by this License; they are outside its scope. The act of | |
| 91 | +running the Program is not restricted, and the output from the Program | |
| 92 | +is covered only if its contents constitute a work based on the | |
| 93 | +Program (independent of having been made by running the Program). | |
| 94 | +Whether that is true depends on what the Program does. | |
| 95 | + | |
| 96 | + 1. You may copy and distribute verbatim copies of the Program's | |
| 97 | +source code as you receive it, in any medium, provided that you | |
| 98 | +conspicuously and appropriately publish on each copy an appropriate | |
| 99 | +copyright notice and disclaimer of warranty; keep intact all the | |
| 100 | +notices that refer to this License and to the absence of any warranty; | |
| 101 | +and give any other recipients of the Program a copy of this License | |
| 102 | +along with the Program. | |
| 103 | + | |
| 104 | +You may charge a fee for the physical act of transferring a copy, and | |
| 105 | +you may at your option offer warranty protection in exchange for a fee. | |
| 106 | + | |
| 107 | + 2. You may modify your copy or copies of the Program or any portion | |
| 108 | +of it, thus forming a work based on the Program, and copy and | |
| 109 | +distribute such modifications or work under the terms of Section 1 | |
| 110 | +above, provided that you also meet all of these conditions: | |
| 111 | + | |
| 112 | + a) You must cause the modified files to carry prominent notices | |
| 113 | + stating that you changed the files and the date of any change. | |
| 114 | + | |
| 115 | + b) You must cause any work that you distribute or publish, that in | |
| 116 | + whole or in part contains or is derived from the Program or any | |
| 117 | + part thereof, to be licensed as a whole at no charge to all third | |
| 118 | + parties under the terms of this License. | |
| 119 | + | |
| 120 | + c) If the modified program normally reads commands interactively | |
| 121 | + when run, you must cause it, when started running for such | |
| 122 | + interactive use in the most ordinary way, to print or display an | |
| 123 | + announcement including an appropriate copyright notice and a | |
| 124 | + notice that there is no warranty (or else, saying that you provide | |
| 125 | + a warranty) and that users may redistribute the program under | |
| 126 | + these conditions, and telling the user how to view a copy of this | |
| 127 | + License. (Exception: if the Program itself is interactive but | |
| 128 | + does not normally print such an announcement, your work based on | |
| 129 | + the Program is not required to print an announcement.) | |
| 130 | + | |
| 131 | +These requirements apply to the modified work as a whole. If | |
| 132 | +identifiable sections of that work are not derived from the Program, | |
| 133 | +and can be reasonably considered independent and separate works in | |
| 134 | +themselves, then this License, and its terms, do not apply to those | |
| 135 | +sections when you distribute them as separate works. But when you | |
| 136 | +distribute the same sections as part of a whole which is a work based | |
| 137 | +on the Program, the distribution of the whole must be on the terms of | |
| 138 | +this License, whose permissions for other licensees extend to the | |
| 139 | +entire whole, and thus to each and every part regardless of who wrote it. | |
| 140 | + | |
| 141 | +Thus, it is not the intent of this section to claim rights or contest | |
| 142 | +your rights to work written entirely by you; rather, the intent is to | |
| 143 | +exercise the right to control the distribution of derivative or | |
| 144 | +collective works based on the Program. | |
| 145 | + | |
| 146 | +In addition, mere aggregation of another work not based on the Program | |
| 147 | +with the Program (or with a work based on the Program) on a volume of | |
| 148 | +a storage or distribution medium does not bring the other work under | |
| 149 | +the scope of this License. | |
| 150 | + | |
| 151 | + 3. You may copy and distribute the Program (or a work based on it, | |
| 152 | +under Section 2) in object code or executable form under the terms of | |
| 153 | +Sections 1 and 2 above provided that you also do one of the following: | |
| 154 | + | |
| 155 | + a) Accompany it with the complete corresponding machine-readable | |
| 156 | + source code, which must be distributed under the terms of Sections | |
| 157 | + 1 and 2 above on a medium customarily used for software interchange; or, | |
| 158 | + | |
| 159 | + b) Accompany it with a written offer, valid for at least three | |
| 160 | + years, to give any third party, for a charge no more than your | |
| 161 | + cost of physically performing source distribution, a complete | |
| 162 | + machine-readable copy of the corresponding source code, to be | |
| 163 | + distributed under the terms of Sections 1 and 2 above on a medium | |
| 164 | + customarily used for software interchange; or, | |
| 165 | + | |
| 166 | + c) Accompany it with the information you received as to the offer | |
| 167 | + to distribute corresponding source code. (This alternative is | |
| 168 | + allowed only for noncommercial distribution and only if you | |
| 169 | + received the program in object code or executable form with such | |
| 170 | + an offer, in accord with Subsection b above.) | |
| 171 | + | |
| 172 | +The source code for a work means the preferred form of the work for | |
| 173 | +making modifications to it. For an executable work, complete source | |
| 174 | +code means all the source code for all modules it contains, plus any | |
| 175 | +associated interface definition files, plus the scripts used to | |
| 176 | +control compilation and installation of the executable. However, as a | |
| 177 | +special exception, the source code distributed need not include | |
| 178 | +anything that is normally distributed (in either source or binary | |
| 179 | +form) with the major components (compiler, kernel, and so on) of the | |
| 180 | +operating system on which the executable runs, unless that component | |
| 181 | +itself accompanies the executable. | |
| 182 | + | |
| 183 | +If distribution of executable or object code is made by offering | |
| 184 | +access to copy from a designated place, then offering equivalent | |
| 185 | +access to copy the source code from the same place counts as | |
| 186 | +distribution of the source code, even though third parties are not | |
| 187 | +compelled to copy the source along with the object code. | |
| 188 | + | |
| 189 | + 4. You may not copy, modify, sublicense, or distribute the Program | |
| 190 | +except as expressly provided under this License. Any attempt | |
| 191 | +otherwise to copy, modify, sublicense or distribute the Program is | |
| 192 | +void, and will automatically terminate your rights under this License. | |
| 193 | +However, parties who have received copies, or rights, from you under | |
| 194 | +this License will not have their licenses terminated so long as such | |
| 195 | +parties remain in full compliance. | |
| 196 | + | |
| 197 | + 5. You are not required to accept this License, since you have not | |
| 198 | +signed it. However, nothing else grants you permission to modify or | |
| 199 | +distribute the Program or its derivative works. These actions are | |
| 200 | +prohibited by law if you do not accept this License. Therefore, by | |
| 201 | +modifying or distributing the Program (or any work based on the | |
| 202 | +Program), you indicate your acceptance of this License to do so, and | |
| 203 | +all its terms and conditions for copying, distributing or modifying | |
| 204 | +the Program or works based on it. | |
| 205 | + | |
| 206 | + 6. Each time you redistribute the Program (or any work based on the | |
| 207 | +Program), the recipient automatically receives a license from the | |
| 208 | +original licensor to copy, distribute or modify the Program subject to | |
| 209 | +these terms and conditions. You may not impose any further | |
| 210 | +restrictions on the recipients' exercise of the rights granted herein. | |
| 211 | +You are not responsible for enforcing compliance by third parties to | |
| 212 | +this License. | |
| 213 | + | |
| 214 | + 7. If, as a consequence of a court judgment or allegation of patent | |
| 215 | +infringement or for any other reason (not limited to patent issues), | |
| 216 | +conditions are imposed on you (whether by court order, agreement or | |
| 217 | +otherwise) that contradict the conditions of this License, they do not | |
| 218 | +excuse you from the conditions of this License. If you cannot | |
| 219 | +distribute so as to satisfy simultaneously your obligations under this | |
| 220 | +License and any other pertinent obligations, then as a consequence you | |
| 221 | +may not distribute the Program at all. For example, if a patent | |
| 222 | +license would not permit royalty-free redistribution of the Program by | |
| 223 | +all those who receive copies directly or indirectly through you, then | |
| 224 | +the only way you could satisfy both it and this License would be to | |
| 225 | +refrain entirely from distribution of the Program. | |
| 226 | + | |
| 227 | +If any portion of this section is held invalid or unenforceable under | |
| 228 | +any particular circumstance, the balance of the section is intended to | |
| 229 | +apply and the section as a whole is intended to apply in other | |
| 230 | +circumstances. | |
| 231 | + | |
| 232 | +It is not the purpose of this section to induce you to infringe any | |
| 233 | +patents or other property right claims or to contest validity of any | |
| 234 | +such claims; this section has the sole purpose of protecting the | |
| 235 | +integrity of the free software distribution system, which is | |
| 236 | +implemented by public license practices. Many people have made | |
| 237 | +generous contributions to the wide range of software distributed | |
| 238 | +through that system in reliance on consistent application of that | |
| 239 | +system; it is up to the author/donor to decide if he or she is willing | |
| 240 | +to distribute software through any other system and a licensee cannot | |
| 241 | +impose that choice. | |
| 242 | + | |
| 243 | +This section is intended to make thoroughly clear what is believed to | |
| 244 | +be a consequence of the rest of this License. | |
| 245 | + | |
| 246 | + 8. If the distribution and/or use of the Program is restricted in | |
| 247 | +certain countries either by patents or by copyrighted interfaces, the | |
| 248 | +original copyright holder who places the Program under this License | |
| 249 | +may add an explicit geographical distribution limitation excluding | |
| 250 | +those countries, so that distribution is permitted only in or among | |
| 251 | +countries not thus excluded. In such case, this License incorporates | |
| 252 | +the limitation as if written in the body of this License. | |
| 253 | + | |
| 254 | + 9. The Free Software Foundation may publish revised and/or new versions | |
| 255 | +of the General Public License from time to time. Such new versions will | |
| 256 | +be similar in spirit to the present version, but may differ in detail to | |
| 257 | +address new problems or concerns. | |
| 258 | + | |
| 259 | +Each version is given a distinguishing version number. If the Program | |
| 260 | +specifies a version number of this License which applies to it and "any | |
| 261 | +later version", you have the option of following the terms and conditions | |
| 262 | +either of that version or of any later version published by the Free | |
| 263 | +Software Foundation. If the Program does not specify a version number of | |
| 264 | +this License, you may choose any version ever published by the Free Software | |
| 265 | +Foundation. | |
| 266 | + | |
| 267 | + 10. If you wish to incorporate parts of the Program into other free | |
| 268 | +programs whose distribution conditions are different, write to the author | |
| 269 | +to ask for permission. For software which is copyrighted by the Free | |
| 270 | +Software Foundation, write to the Free Software Foundation; we sometimes | |
| 271 | +make exceptions for this. Our decision will be guided by the two goals | |
| 272 | +of preserving the free status of all derivatives of our free software and | |
| 273 | +of promoting the sharing and reuse of software generally. | |
| 274 | + | |
| 275 | + NO WARRANTY | |
| 276 | + | |
| 277 | + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY | |
| 278 | +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN | |
| 279 | +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES | |
| 280 | +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED | |
| 281 | +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 282 | +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS | |
| 283 | +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE | |
| 284 | +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, | |
| 285 | +REPAIR OR CORRECTION. | |
| 286 | + | |
| 287 | + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING | |
| 288 | +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR | |
| 289 | +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, | |
| 290 | +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING | |
| 291 | +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED | |
| 292 | +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY | |
| 293 | +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER | |
| 294 | +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE | |
| 295 | +POSSIBILITY OF SUCH DAMAGES. | |
| 296 | + | |
| 297 | + END OF TERMS AND CONDITIONS | |
| 298 | + | |
| 299 | + How to Apply These Terms to Your New Programs | |
| 300 | + | |
| 301 | + If you develop a new program, and you want it to be of the greatest | |
| 302 | +possible use to the public, the best way to achieve this is to make it | |
| 303 | +free software which everyone can redistribute and change under these terms. | |
| 304 | + | |
| 305 | + To do so, attach the following notices to the program. It is safest | |
| 306 | +to attach them to the start of each source file to most effectively | |
| 307 | +convey the exclusion of warranty; and each file should have at least | |
| 308 | +the "copyright" line and a pointer to where the full notice is found. | |
| 309 | + | |
| 310 | + <one line to give the program's name and a brief idea of what it does.> | |
| 311 | + Copyright (C) <year> <name of author> | |
| 312 | + | |
| 313 | + This program is free software; you can redistribute it and/or modify | |
| 314 | + it under the terms of the GNU General Public License as published by | |
| 315 | + the Free Software Foundation; either version 2 of the License, or | |
| 316 | + (at your option) any later version. | |
| 317 | + | |
| 318 | + This program is distributed in the hope that it will be useful, | |
| 319 | + but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 320 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 321 | + GNU General Public License for more details. | |
| 322 | + | |
| 323 | + You should have received a copy of the GNU General Public License along | |
| 324 | + with this program; if not, see <https://www.gnu.org/licenses/>. | |
| 325 | + | |
| 326 | +Also add information on how to contact you by electronic and paper mail. | |
| 327 | + | |
| 328 | +If the program is interactive, make it output a short notice like this | |
| 329 | +when it starts in an interactive mode: | |
| 330 | + | |
| 331 | + Gnomovision version 69, Copyright (C) year name of author | |
| 332 | + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. | |
| 333 | + This is free software, and you are welcome to redistribute it | |
| 334 | + under certain conditions; type `show c' for details. | |
| 335 | + | |
| 336 | +The hypothetical commands `show w' and `show c' should show the appropriate | |
| 337 | +parts of the General Public License. Of course, the commands you use may | |
| 338 | +be called something other than `show w' and `show c'; they could even be | |
| 339 | +mouse-clicks or menu items--whatever suits your program. | |
| 340 | + | |
| 341 | +You should also get your employer (if you work as a programmer) or your | |
| 342 | +school, if any, to sign a "copyright disclaimer" for the program, if | |
| 343 | +necessary. Here is a sample; alter the names: | |
| 344 | + | |
| 345 | + Yoyodyne, Inc., hereby disclaims all copyright interest in the program | |
| 346 | + `Gnomovision' (which makes passes at compilers) written by James Hacker. | |
| 347 | + | |
| 348 | + <signature of Moe Ghoul>, 1 April 1989 | |
| 349 | + Moe Ghoul, President of Vice | |
| 350 | + | |
| 351 | +This General Public License does not permit incorporating your program into | |
| 352 | +proprietary programs. If your program is a subroutine library, you may | |
| 353 | +consider it more useful to permit linking proprietary applications with the | |
| 354 | +library. If this is what you want to do, use the GNU Lesser General | |
| 355 | +Public License instead of this License. | |
