From 919796ec954414ae16f113896bdf212381c96437 Mon Sep 17 00:00:00 2001 From: Daniel Schadt Date: Tue, 9 Nov 2021 02:08:20 +0100 Subject: more documentation --- LICENSE | 674 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ README.md | 38 ++++ src/baas.rs | 14 +- src/contentdb.rs | 9 +- src/download.rs | 35 ++- src/error.rs | 48 +++- src/game.rs | 7 + src/lib.rs | 51 +++++ src/minemod.rs | 28 +++ src/util.rs | 1 + src/world.rs | 4 + 11 files changed, 890 insertions(+), 19 deletions(-) create mode 100644 LICENSE create mode 100644 README.md diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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 +them 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 prevent others from denying you +these rights or asking you to surrender the rights. Therefore, you have +certain responsibilities if you distribute copies of the software, or if +you modify it: responsibilities to respect the freedom of others. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must pass on to the recipients the same +freedoms that you received. 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 rights. + + Developers that use the GNU GPL protect your rights with two steps: +(1) assert copyright on the software, and (2) offer you this License +giving you legal permission to copy, distribute and/or modify it. + + For the developers' and authors' protection, the GPL clearly explains +that there is no warranty for this free software. For both users' and +authors' sake, the GPL requires that modified versions be marked as +changed, so that their problems will not be attributed erroneously to +authors of previous versions. + + Some devices are designed to deny users access to install or run +modified versions of the software inside them, although the manufacturer +can do so. This is fundamentally incompatible with the aim of +protecting users' freedom to change the software. The systematic +pattern of such abuse occurs in the area of products for individuals to +use, which is precisely where it is most unacceptable. Therefore, we +have designed this version of the GPL to prohibit the practice for those +products. If such problems arise substantially in other domains, we +stand ready to extend this provision to those domains in future versions +of the GPL, as needed to protect the freedom of users. + + Finally, every program is threatened constantly by software patents. +States should not allow patents to restrict development and use of +software on general-purpose computers, but in those that do, we wish to +avoid the special danger that patents applied to a free program could +make it effectively proprietary. To prevent this, the GPL assures that +patents cannot be used to render the program non-free. + + The precise terms and conditions for copying, distribution and +modification follow. + + TERMS AND CONDITIONS + + 0. Definitions. + + "This License" refers to version 3 of the GNU General Public License. + + "Copyright" also means copyright-like laws that apply to other kinds of +works, such as semiconductor masks. + + "The Program" refers to any copyrightable work licensed under this +License. Each licensee is addressed as "you". "Licensees" and +"recipients" may be individuals or organizations. + + To "modify" a work means to copy from or adapt all or part of the work +in a fashion requiring copyright permission, other than the making of an +exact copy. The resulting work is called a "modified version" of the +earlier work or a work "based on" the earlier work. + + A "covered work" means either the unmodified Program or a work based +on the Program. + + To "propagate" a work means to do anything with it that, without +permission, would make you directly or secondarily liable for +infringement under applicable copyright law, except executing it on a +computer or modifying a private copy. Propagation includes copying, +distribution (with or without modification), making available to the +public, and in some countries other activities as well. + + To "convey" a work means any kind of propagation that enables other +parties to make or receive copies. Mere interaction with a user through +a computer network, with no transfer of a copy, is not conveying. + + An interactive user interface displays "Appropriate Legal Notices" +to the extent that it includes a convenient and prominently visible +feature that (1) displays an appropriate copyright notice, and (2) +tells the user that there is no warranty for the work (except to the +extent that warranties are provided), that licensees may convey the +work under this License, and how to view a copy of this License. If +the interface presents a list of user commands or options, such as a +menu, a prominent item in the list meets this criterion. + + 1. Source Code. + + The "source code" for a work means the preferred form of the work +for making modifications to it. "Object code" means any non-source +form of a work. + + A "Standard Interface" means an interface that either is an official +standard defined by a recognized standards body, or, in the case of +interfaces specified for a particular programming language, one that +is widely used among developers working in that language. + + The "System Libraries" of an executable work include anything, other +than the work as a whole, that (a) is included in the normal form of +packaging a Major Component, but which is not part of that Major +Component, and (b) serves only to enable use of the work with that +Major Component, or to implement a Standard Interface for which an +implementation is available to the public in source code form. A +"Major Component", in this context, means a major essential component +(kernel, window system, and so on) of the specific operating system +(if any) on which the executable work runs, or a compiler used to +produce the work, or an object code interpreter used to run it. + + The "Corresponding Source" for a work in object code form means all +the source code needed to generate, install, and (for an executable +work) run the object code and to modify the work, including scripts to +control those activities. However, it does not include the work's +System Libraries, or general-purpose tools or generally available free +programs which are used unmodified in performing those activities but +which are not part of the work. For example, Corresponding Source +includes interface definition files associated with source files for +the work, and the source code for shared libraries and dynamically +linked subprograms that the work is specifically designed to require, +such as by intimate data communication or control flow between those +subprograms and other parts of the work. + + The Corresponding Source need not include anything that users +can regenerate automatically from other parts of the Corresponding +Source. + + The Corresponding Source for a work in source code form is that +same work. + + 2. Basic Permissions. + + All rights granted under this License are granted for the term of +copyright on the Program, and are irrevocable provided the stated +conditions are met. This License explicitly affirms your unlimited +permission to run the unmodified Program. The output from running a +covered work is covered by this License only if the output, given its +content, constitutes a covered work. This License acknowledges your +rights of fair use or other equivalent, as provided by copyright law. + + You may make, run and propagate covered works that you do not +convey, without conditions so long as your license otherwise remains +in force. You may convey covered works to others for the sole purpose +of having them make modifications exclusively for you, or provide you +with facilities for running those works, provided that you comply with +the terms of this License in conveying all material for which you do +not control copyright. Those thus making or running the covered works +for you must do so exclusively on your behalf, under your direction +and control, on terms that prohibit them from making any copies of +your copyrighted material outside their relationship with you. + + Conveying under any other circumstances is permitted solely under +the conditions stated below. Sublicensing is not allowed; section 10 +makes it unnecessary. + + 3. Protecting Users' Legal Rights From Anti-Circumvention Law. + + No covered work shall be deemed part of an effective technological +measure under any applicable law fulfilling obligations under article +11 of the WIPO copyright treaty adopted on 20 December 1996, or +similar laws prohibiting or restricting circumvention of such +measures. + + When you convey a covered work, you waive any legal power to forbid +circumvention of technological measures to the extent such circumvention +is effected by exercising rights under this License with respect to +the covered work, and you disclaim any intention to limit operation or +modification of the work as a means of enforcing, against the work's +users, your or third parties' legal rights to forbid circumvention of +technological measures. + + 4. Conveying Verbatim Copies. + + You may convey 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; +keep intact all notices stating that this License and any +non-permissive terms added in accord with section 7 apply to the code; +keep intact all notices of the absence of any warranty; and give all +recipients a copy of this License along with the Program. + + You may charge any price or no price for each copy that you convey, +and you may offer support or warranty protection for a fee. + + 5. Conveying Modified Source Versions. + + You may convey a work based on the Program, or the modifications to +produce it from the Program, in the form of source code under the +terms of section 4, provided that you also meet all of these conditions: + + a) The work must carry prominent notices stating that you modified + it, and giving a relevant date. + + b) The work must carry prominent notices stating that it is + released under this License and any conditions added under section + 7. This requirement modifies the requirement in section 4 to + "keep intact all notices". + + c) You must license the entire work, as a whole, under this + License to anyone who comes into possession of a copy. This + License will therefore apply, along with any applicable section 7 + additional terms, to the whole of the work, and all its parts, + regardless of how they are packaged. This License gives no + permission to license the work in any other way, but it does not + invalidate such permission if you have separately received it. + + d) If the work has interactive user interfaces, each must display + Appropriate Legal Notices; however, if the Program has interactive + interfaces that do not display Appropriate Legal Notices, your + work need not make them do so. + + A compilation of a covered work with other separate and independent +works, which are not by their nature extensions of the covered work, +and which are not combined with it such as to form a larger program, +in or on a volume of a storage or distribution medium, is called an +"aggregate" if the compilation and its resulting copyright are not +used to limit the access or legal rights of the compilation's users +beyond what the individual works permit. Inclusion of a covered work +in an aggregate does not cause this License to apply to the other +parts of the aggregate. + + 6. Conveying Non-Source Forms. + + You may convey a covered work in object code form under the terms +of sections 4 and 5, provided that you also convey the +machine-readable Corresponding Source under the terms of this License, +in one of these ways: + + a) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by the + Corresponding Source fixed on a durable physical medium + customarily used for software interchange. + + b) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by a + written offer, valid for at least three years and valid for as + long as you offer spare parts or customer support for that product + model, to give anyone who possesses the object code either (1) a + copy of the Corresponding Source for all the software in the + product that is covered by this License, on a durable physical + medium customarily used for software interchange, for a price no + more than your reasonable cost of physically performing this + conveying of source, or (2) access to copy the + Corresponding Source from a network server at no charge. + + c) Convey individual copies of the object code with a copy of the + written offer to provide the Corresponding Source. This + alternative is allowed only occasionally and noncommercially, and + only if you received the object code with such an offer, in accord + with subsection 6b. + + d) Convey the object code by offering access from a designated + place (gratis or for a charge), and offer equivalent access to the + Corresponding Source in the same way through the same place at no + further charge. You need not require recipients to copy the + Corresponding Source along with the object code. If the place to + copy the object code is a network server, the Corresponding Source + may be on a different server (operated by you or a third party) + that supports equivalent copying facilities, provided you maintain + clear directions next to the object code saying where to find the + Corresponding Source. Regardless of what server hosts the + Corresponding Source, you remain obligated to ensure that it is + available for as long as needed to satisfy these requirements. + + e) Convey the object code using peer-to-peer transmission, provided + you inform other peers where the object code and Corresponding + Source of the work are being offered to the general public at no + charge under subsection 6d. + + A separable portion of the object code, whose source code is excluded +from the Corresponding Source as a System Library, need not be +included in conveying the object code work. + + A "User Product" is either (1) a "consumer product", which means any +tangible personal property which is normally used for personal, family, +or household purposes, or (2) anything designed or sold for incorporation +into a dwelling. In determining whether a product is a consumer product, +doubtful cases shall be resolved in favor of coverage. For a particular +product received by a particular user, "normally used" refers to a +typical or common use of that class of product, regardless of the status +of the particular user or of the way in which the particular user +actually uses, or expects or is expected to use, the product. A product +is a consumer product regardless of whether the product has substantial +commercial, industrial or non-consumer uses, unless such uses represent +the only significant mode of use of the product. + + "Installation Information" for a User Product means any methods, +procedures, authorization keys, or other information required to install +and execute modified versions of a covered work in that User Product from +a modified version of its Corresponding Source. The information must +suffice to ensure that the continued functioning of the modified object +code is in no case prevented or interfered with solely because +modification has been made. + + If you convey an object code work under this section in, or with, or +specifically for use in, a User Product, and the conveying occurs as +part of a transaction in which the right of possession and use of the +User Product is transferred to the recipient in perpetuity or for a +fixed term (regardless of how the transaction is characterized), the +Corresponding Source conveyed under this section must be accompanied +by the Installation Information. But this requirement does not apply +if neither you nor any third party retains the ability to install +modified object code on the User Product (for example, the work has +been installed in ROM). + + The requirement to provide Installation Information does not include a +requirement to continue to provide support service, warranty, or updates +for a work that has been modified or installed by the recipient, or for +the User Product in which it has been modified or installed. Access to a +network may be denied when the modification itself materially and +adversely affects the operation of the network or violates the rules and +protocols for communication across the network. + + Corresponding Source conveyed, and Installation Information provided, +in accord with this section must be in a format that is publicly +documented (and with an implementation available to the public in +source code form), and must require no special password or key for +unpacking, reading or copying. + + 7. Additional Terms. + + "Additional permissions" are terms that supplement the terms of this +License by making exceptions from one or more of its conditions. +Additional permissions that are applicable to the entire Program shall +be treated as though they were included in this License, to the extent +that they are valid under applicable law. If additional permissions +apply only to part of the Program, that part may be used separately +under those permissions, but the entire Program remains governed by +this License without regard to the additional permissions. + + When you convey a copy of a covered work, you may at your option +remove any additional permissions from that copy, or from any part of +it. (Additional permissions may be written to require their own +removal in certain cases when you modify the work.) You may place +additional permissions on material, added by you to a covered work, +for which you have or can give appropriate copyright permission. + + Notwithstanding any other provision of this License, for material you +add to a covered work, you may (if authorized by the copyright holders of +that material) supplement the terms of this License with terms: + + a) Disclaiming warranty or limiting liability differently from the + terms of sections 15 and 16 of this License; or + + b) Requiring preservation of specified reasonable legal notices or + author attributions in that material or in the Appropriate Legal + Notices displayed by works containing it; or + + c) Prohibiting misrepresentation of the origin of that material, or + requiring that modified versions of such material be marked in + reasonable ways as different from the original version; or + + d) Limiting the use for publicity purposes of names of licensors or + authors of the material; or + + e) Declining to grant rights under trademark law for use of some + trade names, trademarks, or service marks; or + + f) Requiring indemnification of licensors and authors of that + material by anyone who conveys the material (or modified versions of + it) with contractual assumptions of liability to the recipient, for + any liability that these contractual assumptions directly impose on + those licensors and authors. + + All other non-permissive additional terms are considered "further +restrictions" within the meaning of section 10. If the Program as you +received it, or any part of it, contains a notice stating that it is +governed by this License along with a term that is a further +restriction, you may remove that term. If a license document contains +a further restriction but permits relicensing or conveying under this +License, you may add to a covered work material governed by the terms +of that license document, provided that the further restriction does +not survive such relicensing or conveying. + + If you add terms to a covered work in accord with this section, you +must place, in the relevant source files, a statement of the +additional terms that apply to those files, or a notice indicating +where to find the applicable terms. + + Additional terms, permissive or non-permissive, may be stated in the +form of a separately written license, or stated as exceptions; +the above requirements apply either way. + + 8. Termination. + + You may not propagate or modify a covered work except as expressly +provided under this License. Any attempt otherwise to propagate or +modify it is void, and will automatically terminate your rights under +this License (including any patent licenses granted under the third +paragraph of section 11). + + However, if you cease all violation of this License, then your +license from a particular copyright holder is reinstated (a) +provisionally, unless and until the copyright holder explicitly and +finally terminates your license, and (b) permanently, if the copyright +holder fails to notify you of the violation by some reasonable means +prior to 60 days after the cessation. + + Moreover, your license from a particular copyright holder is +reinstated permanently if the copyright holder notifies you of the +violation by some reasonable means, this is the first time you have +received notice of violation of this License (for any work) from that +copyright holder, and you cure the violation prior to 30 days after +your receipt of the notice. + + Termination of your rights under this section does not terminate the +licenses of parties who have received copies or rights from you under +this License. If your rights have been terminated and not permanently +reinstated, you do not qualify to receive new licenses for the same +material under section 10. + + 9. Acceptance Not Required for Having Copies. + + You are not required to accept this License in order to receive or +run a copy of the Program. Ancillary propagation of a covered work +occurring solely as a consequence of using peer-to-peer transmission +to receive a copy likewise does not require acceptance. However, +nothing other than this License grants you permission to propagate or +modify any covered work. These actions infringe copyright if you do +not accept this License. Therefore, by modifying or propagating a +covered work, you indicate your acceptance of this License to do so. + + 10. Automatic Licensing of Downstream Recipients. + + Each time you convey a covered work, the recipient automatically +receives a license from the original licensors, to run, modify and +propagate that work, subject to this License. You are not responsible +for enforcing compliance by third parties with this License. + + An "entity transaction" is a transaction transferring control of an +organization, or substantially all assets of one, or subdividing an +organization, or merging organizations. If propagation of a covered +work results from an entity transaction, each party to that +transaction who receives a copy of the work also receives whatever +licenses to the work the party's predecessor in interest had or could +give under the previous paragraph, plus a right to possession of the +Corresponding Source of the work from the predecessor in interest, if +the predecessor has it or can get it with reasonable efforts. + + You may not impose any further restrictions on the exercise of the +rights granted or affirmed under this License. For example, you may +not impose a license fee, royalty, or other charge for exercise of +rights granted under this License, and you may not initiate litigation +(including a cross-claim or counterclaim in a lawsuit) alleging that +any patent claim is infringed by making, using, selling, offering for +sale, or importing the Program or any portion of it. + + 11. Patents. + + A "contributor" is a copyright holder who authorizes use under this +License of the Program or a work on which the Program is based. The +work thus licensed is called the contributor's "contributor version". + + A contributor's "essential patent claims" are all patent claims +owned or controlled by the contributor, whether already acquired or +hereafter acquired, that would be infringed by some manner, permitted +by this License, of making, using, or selling its contributor version, +but do not include claims that would be infringed only as a +consequence of further modification of the contributor version. For +purposes of this definition, "control" includes the right to grant +patent sublicenses in a manner consistent with the requirements of +this License. + + Each contributor grants you a non-exclusive, worldwide, royalty-free +patent license under the contributor's essential patent claims, to +make, use, sell, offer for sale, import and otherwise run, modify and +propagate the contents of its contributor version. + + In the following three paragraphs, a "patent license" is any express +agreement or commitment, however denominated, not to enforce a patent +(such as an express permission to practice a patent or covenant not to +sue for patent infringement). To "grant" such a patent license to a +party means to make such an agreement or commitment not to enforce a +patent against the party. + + If you convey a covered work, knowingly relying on a patent license, +and the Corresponding Source of the work is not available for anyone +to copy, free of charge and under the terms of this License, through a +publicly available network server or other readily accessible means, +then you must either (1) cause the Corresponding Source to be so +available, or (2) arrange to deprive yourself of the benefit of the +patent license for this particular work, or (3) arrange, in a manner +consistent with the requirements of this License, to extend the patent +license to downstream recipients. "Knowingly relying" means you have +actual knowledge that, but for the patent license, your conveying the +covered work in a country, or your recipient's use of the covered work +in a country, would infringe one or more identifiable patents in that +country that you have reason to believe are valid. + + If, pursuant to or in connection with a single transaction or +arrangement, you convey, or propagate by procuring conveyance of, a +covered work, and grant a patent license to some of the parties +receiving the covered work authorizing them to use, propagate, modify +or convey a specific copy of the covered work, then the patent license +you grant is automatically extended to all recipients of the covered +work and works based on it. + + A patent license is "discriminatory" if it does not include within +the scope of its coverage, prohibits the exercise of, or is +conditioned on the non-exercise of one or more of the rights that are +specifically granted under this License. You may not convey a covered +work if you are a party to an arrangement with a third party that is +in the business of distributing software, under which you make payment +to the third party based on the extent of your activity of conveying +the work, and under which the third party grants, to any of the +parties who would receive the covered work from you, a discriminatory +patent license (a) in connection with copies of the covered work +conveyed by you (or copies made from those copies), or (b) primarily +for and in connection with specific products or compilations that +contain the covered work, unless you entered into that arrangement, +or that patent license was granted, prior to 28 March 2007. + + Nothing in this License shall be construed as excluding or limiting +any implied license or other defenses to infringement that may +otherwise be available to you under applicable patent law. + + 12. No Surrender of Others' Freedom. + + If conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot convey a +covered work so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you may +not convey it at all. For example, if you agree to terms that obligate you +to collect a royalty for further conveying from those to whom you convey +the Program, the only way you could satisfy both those terms and this +License would be to refrain entirely from conveying the Program. + + 13. Use with the GNU Affero General Public License. + + Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. + + 14. Revised Versions of this License. + + The Free Software Foundation may publish revised and/or new versions of +the GNU General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + + Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU General Public License, you may choose any version ever published +by the Free Software Foundation. + + If the Program specifies that a proxy can decide which future +versions of the GNU General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + + 15. Disclaimer of Warranty. + + 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 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + 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 +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + 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 3 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, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program 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, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU 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. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..566ba4d --- /dev/null +++ b/README.md @@ -0,0 +1,38 @@ +# ModderBaas + +ModderBaas is a Rust library to interact with installed Minetest objects (worlds, games, mods), and a accompanying CLI application to manage Minetest mods on headless installations (such as `minetest-server` on Debian). + +## Building + +The build process is done through `cargo`: + +``` +cargo build --release +``` + +Library documentation can be built through + +``` +cargo doc +``` + +## Usage + +See `modderbaas help`. + +## License + + Copyright (C) 2021 Daniel Schadt + + 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 3 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, see . diff --git a/src/baas.rs b/src/baas.rs index 36a7aad..938b4c4 100644 --- a/src/baas.rs +++ b/src/baas.rs @@ -1,4 +1,4 @@ -//! Functions to manipulate the global Minetest installation. +//! This module contains functions to query & manipulate the global Minetest installation. use std::{collections::HashMap, path::PathBuf}; use dirs; @@ -191,7 +191,8 @@ impl Baas { /// Snapshot of a [`Baas`] scan. /// -/// Every item is indexed by its ID/name. +/// A snapshot is created through the [`Baas::snapshot`] method and gives a frozen view on the +/// installed objects. #[derive(Debug, Clone)] pub struct Snapshot { worlds: HashMap, @@ -200,14 +201,23 @@ pub struct Snapshot { } impl Snapshot { + /// Return all worlds that were found. + /// + /// The map maps the world's name to the [`World`] object. pub fn worlds(&self) -> &HashMap { &self.worlds } + /// Return all games that were found. + /// + /// The map maps the game ID to the [`Game`] object. pub fn games(&self) -> &HashMap { &self.games } + /// Return the available mods that were found. + /// + /// The map maps the mod name to the [`MineMod`] object. pub fn mods(&self) -> &HashMap { &self.mods } diff --git a/src/contentdb.rs b/src/contentdb.rs index 467f9dc..d9c4688 100644 --- a/src/contentdb.rs +++ b/src/contentdb.rs @@ -20,16 +20,23 @@ static PROVIDES_SELECTOR: Lazy = static A_SELECTOR: Lazy = Lazy::new(|| Selector::parse("a").expect("Invalid selector")); -/// (Partial) metadata of a content item, as returned by the Content DB. +/// (Partial) metadata of a content item, as returned by the Content DB API. #[derive(Debug, Clone, PartialEq, Eq, Hash, Deserialize, Serialize)] pub struct ContentMeta { + /// Username of the author. pub author: String, + /// Name of the package. pub name: String, + /// A list of mods that are provided by this package. pub provides: Vec, + /// The short description of the package. pub short_description: String, + /// The (human-readable) title of this package. pub title: String, + /// The type of the package ("mod", "game", "txp") #[serde(rename = "type")] pub typ: String, + /// The download URL of the package. pub url: Url, } diff --git a/src/download.rs b/src/download.rs index dfce2fc..b9507b7 100644 --- a/src/download.rs +++ b/src/download.rs @@ -1,3 +1,20 @@ +//! Module to download mods from the internet. +//! +//! This module allows to download mods from various sources in the internet. Source specification +//! is done through the [`Source`] enum: +//! +//! * [`Source::Http`]: Download straight from an URL. It is expected that the URL points to a zip +//! archive which contains the mod, either directly or in a subfolder. +//! * [`Source::ContentDb`]: Refers to a package on the ContentDB. The [`Downloader`] will consult +//! the API to get the right download URL. +//! * [`Source::ModId`]: Refers to a simple mod name. Note that this specification can be +//! ambiguous, in which case the [`Downloader`] will return an error. +//! +//! The actual download work is done by a [`Downloader`]. Each [`Downloader`] has its own temporary +//! directory, in which any mods are downloaded and extracted. If you drop the [`Downloader`], +//! those mods will be deleted and the objects pointing to the now-gone directories are no longer +//! useful. + use std::{ fs, io::{Cursor, Read}, @@ -54,8 +71,8 @@ impl FromStr for Source { /// A downloader is responsible for downloading mods from various sources. /// -/// Note that the [`MineMod`] that the [`Downloader`] creates will not work after the downloader -/// has been destroyed, as the temporary files will be lost. +/// Note that the objects that the [`Downloader`] creates will not work after the downloader has +/// been destroyed, as the temporary files will be lost. #[derive(Debug)] pub struct Downloader { temp_dir: TempDir, @@ -63,10 +80,12 @@ pub struct Downloader { } impl Downloader { + /// Create a new [`Downloader`], refering to the default ContentDB. pub fn new() -> Result { Downloader::with_content_db(Default::default()) } + /// Create a new [`Downloader`] that points to a specific ContentDB instance. pub fn with_content_db(content_db: ContentDb) -> Result { let temp_dir = TempDir::new(env!("CARGO_PKG_NAME"))?; Ok(Downloader { @@ -75,6 +94,15 @@ impl Downloader { }) } + /// Download a mod from the given source. + /// + /// This function may download either a mod ([`minemod::MineMod`]) or a modpack + /// ([`minemod::Modpack`]), therefore it returns a trait object that can be queried for the + /// required information. + /// + /// Note that the object will be useless when the [`Downloader`] is dropped, as the temporary + /// directory containing the downloaded data will be lost. Use [`ModContainer::install_to`] to + /// copy the mod content to a different directory. pub fn download(&self, source: &Source) -> Result> { match *source { Source::Http(ref url) => self.download_http(url), @@ -96,8 +124,7 @@ impl Downloader { /// /// The [`Downloader`] expects to receive a zipfile containing the mod directory on this link. /// - /// The mod is extracted to a temporary directory and has to be copied using - /// [`MineMod::copy_to`]. + /// Refer to the module level documentation and [`Downloader::download`] for more information. pub fn download_http(&self, url: &Url) -> Result> { let mut reader = ureq::request_url("GET", url).call()?.into_reader(); let mut data = Vec::new(); diff --git a/src/error.rs b/src/error.rs index 86d758f..5dbd6b6 100644 --- a/src/error.rs +++ b/src/error.rs @@ -1,40 +1,64 @@ +//! Error definitions for ModderBaas. +//! +//! The type alias [`Result`] can be used, which defaults the error type to [`enum@Error`]. Any function +//! that introduces errors should return a [`Result`] — unless it is clear that a more narrow error +//! will suffice, such as [`crate::util::copy_recursive`]. use std::path::PathBuf; use thiserror::Error; +/// The main error type. #[derive(Error, Debug)] pub enum Error { + /// A malformed or otherwise invalid mod ID has been given. #[error("invalid mod id '{0}'")] InvalidModId(String), - #[error("underlying HTTP error")] - UreqError(#[from] ureq::Error), - #[error("underlying I/O error")] - IoError(#[from] std::io::Error), + /// The ContentDB website returned invalid data. #[error("the website returned unexpected data")] InvalidScrape, + /// The directory does not contain a valid Minetest mod. #[error("'{0}' is not a valid mod directory")] InvalidModDir(PathBuf), - #[error("ZIP error")] - ZipError(#[from] zip::result::ZipError), - #[error("the downloaded file was empty")] - EmptyArchive, + /// The directory does not contain a valid Minetest game. #[error("'{0}' is not a valid game directory")] InvalidGameDir(PathBuf), + /// The directory does not contain a valid Minetest world. #[error("'{0}' is not a valid world directory")] InvalidWorldDir(PathBuf), + /// The directory does not contain a valid Minetest modpack. #[error("'{0}' is not a valid modpack directory")] InvalidModpackDir(PathBuf), - #[error("the world has no game ID set")] - NoGameSet, + /// The given source string can not be parsed into a [`crate::download::Source`]. #[error("'{0}' does not represent a valid mod source")] InvalidSourceSpec(String), - #[error("invalid URL")] - UrlError(#[from] url::ParseError), + + /// An empty ZIP archive was downloaded. + #[error("the downloaded file was empty")] + EmptyArchive, + /// The given world does not have a game ID set. + #[error("the world has no game ID set")] + NoGameSet, + /// ContentDB returned more than one fitting mod for the query. #[error("the mod ID '{0}' does not point to a single mod")] AmbiguousModId(String), + + /// Wrapper for HTTP errors. + #[error("underlying HTTP error")] + UreqError(#[from] ureq::Error), + /// Wrapper for generic I/O errors. + #[error("underlying I/O error")] + IoError(#[from] std::io::Error), + /// Wrapper for ZIP errors. + #[error("ZIP error")] + ZipError(#[from] zip::result::ZipError), + /// Wrapper for URL parsing errors. + #[error("invalid URL")] + UrlError(#[from] url::ParseError), + /// Wrapper for Unix errors. #[cfg(unix)] #[error("underlying Unix error")] NixError(#[from] nix::errno::Errno), } +/// A [`Result`] with the error type defaulted to [`enum@Error`]. pub type Result = std::result::Result; diff --git a/src/game.rs b/src/game.rs index f323212..0d2405d 100644 --- a/src/game.rs +++ b/src/game.rs @@ -1,3 +1,10 @@ +//! Module to interact with installed games. +//! +//! The main type of this module is a [`Game`], which can be constructed by opening installed +//! Minetest games through [`Game::open`]. +//! +//! Valid game directories have a `game.conf` configuration file which contains some metadata about +//! the game. use std::{ fmt, path::{Path, PathBuf}, diff --git a/src/lib.rs b/src/lib.rs index bf9e3c9..f9b1c8b 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -1,3 +1,51 @@ +//! ModderBaas is a library that allows you to manage Minetest mods. +//! +//! The main point of the library is to be used by the `modderbaas` CLI application, however it can +//! also be used in other Rust programs that want a (limited) API to interact with Minetest +//! content. +//! +//! # Representation +//! +//! Most objects ([`Game`], [`World`], [`MineMod`], [`Modpack`]) are represented by the path to the +//! on-disk directory that contains the corresponding game/world/mod/modpack. The initializers take +//! care that the directory contains a valid object. +//! +//! Many of the query operations do not do any caching, so avoid calling them in tight loops. If +//! you want to do a lot of name queries (e.g. to find installed mods), consider using a +//! [`Snapshot`]. +//! +//! # Racing +//! +//! ModderBaas expects that during the time of its access, no other application meddles with the +//! directories. It will *not* lead to crashes, but you will get a lot more error return values. +//! +//! # Mutability +//! +//! Some objects support mutating their state. This is usually done by directly writing the data +//! into the corresponding file. Therefore, those methods (even though they mutate state) only take +//! a shared reference (`&self`) — keep that in mind! +//! +//! # Crate Structure +//! +//! Most game objects are implemented in their own module and re-exported at the crate root: +//! +//! * [`game`] +//! * [`minemod`] +//! * [`world`] +//! +//! Interacting with mods from the internet/ContentDB is done through two modules: +//! +//! * [`contentdb`] +//! * [`download`] +//! +//! Some modules contain auxiliary functions: +//! +//! * [`kvstore`] +//! * [`util`] +//! +//! Error definitions are in [`error`]. +//! +//! [`baas`] contains functions and data to interact with the global Minetest installation. use std::{fs, path::Path}; use log::debug; @@ -22,6 +70,7 @@ pub mod world; pub use baas::{Baas, Snapshot}; pub use contentdb::ContentDb; pub use download::{Downloader, Source}; +pub use error::Error; pub use game::Game; pub use minemod::{MineMod, Modpack}; pub use world::World; @@ -33,6 +82,8 @@ use error::Result; /// Files for which `scanner` returns `Ok(..)` will be collected and returned. Files for which /// `scanner` returns `Err(..)` will be silently discarded. /// +/// This function is useful to iterate through the items in a directory and find fitting objects: +/// /// ```rust /// use modderbaas::minemod::MineMod; /// let mods = scan("/tmp", |p| MineMod::open(p))?; diff --git a/src/minemod.rs b/src/minemod.rs index f45b897..456d1c6 100644 --- a/src/minemod.rs +++ b/src/minemod.rs @@ -1,3 +1,27 @@ +//! Module to interact with installed mods and modpacks. +//! +//! Due to technical reasons (`mod` being a Rust keyword), this module is called `minemod` and the +//! mod objects are called [`MineMod`]. +//! +//! Simple mods are represented by [`MineMod`], which can be opened by [`MineMod::open`]. Valid +//! mods are identified by their `mod.conf`, which contains metadata about the mod. +//! +//! Modpacks can be represented by [`Modpack`] and loaded through [`Modpack::open`]. A modpack is +//! just a collection of mods grouped together, and the modpack directory needs to have a +//! `modpack.conf` in its directory. +//! +//! # Mods and Packs United +//! +//! In some cases, we cannot know in advance whether we are dealing with a mod or a modpack (e.g. +//! when downloading content from ContentDB). Therefore, the trait [`ModContainer`] exists, which +//! can be used as a trait object (`Box`). It provides the most important methods +//! and allows downcasting through `Any`. +//! +//! If you want to work with the mods directly, you can use [`ModContainer::mods`], which returns +//! the mod itself for [`MineMod`]s, and all contained mods for [`Modpack`]s. +//! +//! If you want to open a directory as a [`ModContainer`], you can use [`open_mod_or_pack`]. + use std::{ any::Any, collections::HashMap, @@ -20,6 +44,7 @@ pub struct MineMod { } impl MineMod { + /// Opens the given directory as a mod. pub fn open>(path: P) -> Result { MineMod::open_path(path.as_ref()) } @@ -93,6 +118,7 @@ pub struct Modpack { } impl Modpack { + /// Opens the given directory as a modpack. pub fn open>(path: P) -> Result { Modpack::open_path(path.as_ref()) } @@ -154,6 +180,8 @@ impl fmt::Display for Modpack { } /// A thing that can contain mods. +/// +/// This is useful for code that should deal with both mods and modpacks. pub trait ModContainer: Any + fmt::Display { /// Returns the name of the mod container. fn name(&self) -> Result; diff --git a/src/util.rs b/src/util.rs index d5f9ec2..ea401ba 100644 --- a/src/util.rs +++ b/src/util.rs @@ -1,3 +1,4 @@ +//! Utility functions. use std::{fs, io, path::Path}; #[cfg(unix)] diff --git a/src/world.rs b/src/world.rs index 31ddbd4..5dce6d0 100644 --- a/src/world.rs +++ b/src/world.rs @@ -1,3 +1,6 @@ +//! Module to interact with Minetest worlds (savegames). +//! +//! The main object is [`World`], which represents a Minetest world on-disk. use std::{ collections::HashMap, fmt, @@ -17,6 +20,7 @@ pub struct World { } impl World { + /// Open the given directory as a [`World`]. pub fn open>(path: P) -> Result { World::open_path(path.as_ref()) } -- cgit v1.2.3