Add license.

* Use embedded data sources
* Optionally listen on a Unix domain socket
* Server htmx and CSS from remote CDNs.

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ 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.
+
+    <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 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 <https://www.gnu.org/licenses/>.
+
+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:
+
+    <program>  Copyright (C) <year>  <name of author>
+    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
+<https://www.gnu.org/licenses/>.
+
+  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
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -6,16 +6,23 @@ Match patterns and solve anagrams - handy for crossword fanatics.
 
 ```bash
 cd standalone
-go run main.go
+go run main.go --listen :3000
 ```
 
-## Cloud Function
+## Copyright
 
-To test using the Cloud Functions Framework:
+Anagram and Word Search Server
+Copyright (C) 2024 Raymond Miller <ray@1729.org.uk>
 
-```bash
-env FUNCTION_TARGET=WordSearch WORDLIST_BUCKET=word-search-1729-assets \
-  WORDLIST_PATH=data/wordlist.txt LOCAL_ONLY=true go run ./cmd/fn-framework-test/main.go
+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.
 
-curl 'http://localhost:8080?mode=anagrams&pattern=idea'
-```
+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 <https://www.gnu.org/licenses/>.

anagram/anagram.go

@@ -8,18 +8,13 @@ import (
 	"github.com/ray1729/wordsearch/util"
 )
 
-type DB interface {
-	FindAnagrams(s string) []string
-	Add(s string)
+type DB map[string][]string
+
+func New() DB {
+	return make(DB)
 }
 
-type HashDBImpl map[string][]string
-
-func New() HashDBImpl {
-	return make(HashDBImpl)
-}
-
-func (db HashDBImpl) Add(s string) {
+func (db DB) Add(s string) {
 	k := toKey(s)
 	db[k] = append(db[k], s)
 }
@@ -37,12 +32,9 @@ func Load(r io.Reader) (DB, error) {
 		db.Add(sc.Text())
 
 	}
-	if err := sc.Err(); err != nil {
-		return nil, err
-	}
-	return db, nil
+	return db, sc.Err()
 }
 
-func (d HashDBImpl) FindAnagrams(s string) []string {
+func (d DB) FindAnagrams(s string) []string {
 	return d[toKey(s)]
 }

cloudfn.go

@@ -1,147 +0,0 @@
-package wordsearch
-
-import (
-	"bufio"
-	"context"
-	"fmt"
-	"log"
-	"net/http"
-	"os"
-	"sort"
-	"text/template"
-
-	"cloud.google.com/go/storage"
-	"github.com/GoogleCloudPlatform/functions-framework-go/functions"
-	"github.com/ray1729/wordsearch/anagram"
-	"github.com/ray1729/wordsearch/match"
-	"github.com/rs/cors"
-)
-
-var anagramDB anagram.DB
-var matchDB match.DB
-
-func initializeDB(ctx context.Context, bucketName, objectName string) error {
-	client, err := storage.NewClient(ctx)
-	if err != nil {
-		return fmt.Errorf("error creating storage client: %v", err)
-	}
-	r, err := client.Bucket(bucketName).Object(objectName).NewReader(ctx)
-	if err != nil {
-		return fmt.Errorf("error opening gs://%s/%s: %v", bucketName, objectName, err)
-	}
-	defer r.Close()
-	anagramDB = anagram.New()
-	matchDB = match.New()
-	sc := bufio.NewScanner(r)
-	for sc.Scan() {
-		s := sc.Text()
-		anagramDB.Add(s)
-		matchDB.Add(s)
-	}
-	if err := sc.Err(); err != nil {
-		return fmt.Errorf("error reading gs://%s/%s: %v", bucketName, objectName, err)
-	}
-	return nil
-}
-
-func init() {
-	ctx := context.Background()
-	bucketName := mustGetenv("WORDLIST_BUCKET")
-	objectName := mustGetenv("WORDLIST_PATH")
-	log.Println("Initializing databases")
-	if err := initializeDB(ctx, bucketName, objectName); err != nil {
-		panic(err)
-	}
-	corsHandler := cors.New(cors.Options{
-		AllowedOrigins:   []string{"*"},
-		AllowedHeaders:   []string{"*"},
-		AllowedMethods:   []string{http.MethodPost},
-		AllowCredentials: false,
-		MaxAge:           3600,
-	})
-	log.Println("Registering HTTP function with the Functions Framework")
-	functions.HTTP("WordSearch", func(w http.ResponseWriter, r *http.Request) {
-		corsHandler.ServeHTTP(w, r, handleFormSubmission)
-	})
-}
-
-func mustGetenv(s string) string {
-	v := os.Getenv(s)
-	if len(v) == 0 {
-		panic(fmt.Sprintf("environment variable %s not set", s))
-	}
-	return v
-}
-
-func handleFormSubmission(w http.ResponseWriter, r *http.Request) {
-	if err := r.ParseForm(); err != nil {
-		log.Printf("error parsing form: %v", err)
-		http.Error(w, "error parsing form", http.StatusBadRequest)
-		return
-	}
-	mode := r.Form.Get("mode")
-	pattern := r.Form.Get("pattern")
-	if len(pattern) == 0 {
-		http.Error(w, "Missing pattern", http.StatusBadRequest)
-		return
-	}
-	switch mode {
-	case "match":
-		results := matchResults(matchDB, pattern)
-		renderTemplate(w, resultsTmpl, results)
-	case "anagrams":
-		results := anagramResults(anagramDB, pattern)
-		renderTemplate(w, resultsTmpl, results)
-	default:
-		log.Printf("invalid mode: %s", mode)
-		http.Error(w, fmt.Sprintf("Invalid mode: %s", mode), http.StatusBadRequest)
-	}
-}
-
-func anagramResults(db anagram.DB, pattern string) ResultParams {
-	var params ResultParams
-	params.Results = db.FindAnagrams(pattern)
-	if len(params.Results) > 0 {
-		params.Preamble = fmt.Sprintf("Anagrams of %q:", pattern)
-	} else {
-		params.Preamble = fmt.Sprintf("Found no anagrams of %q", pattern)
-	}
-	sort.Slice(params.Results, func(i, j int) bool { return params.Results[i] < params.Results[j] })
-	return params
-}
-
-func matchResults(db match.DB, pattern string) ResultParams {
-	var params ResultParams
-	params.Results = db.FindMatches(pattern)
-	if len(params.Results) > 0 {
-		params.Preamble = fmt.Sprintf("Matches for %q:", pattern)
-	} else {
-		params.Preamble = fmt.Sprintf("Found no matches for %q", pattern)
-	}
-	sort.Slice(params.Results, func(i, j int) bool { return params.Results[i] < params.Results[j] })
-	return params
-}
-
-func renderTemplate(w http.ResponseWriter, t *template.Template, params any) {
-	err := t.Execute(w, params)
-	if err != nil {
-		log.Printf("Error rendering template %s: %v", t.Name(), err)
-		http.Error(w, "Internal server error", http.StatusInternalServerError)
-	}
-}
-
-type ResultParams struct {
-	Preamble string
-	Results  []string
-}
-
-var resultsTmpl = template.Must(template.New("results").Parse(`
-{{ with .Preamble }}
-<p>{{ . }}</p>
-{{ end }}
-<ul>
-{{ range .Results }}
-  <li>{{.}}</li>
-{{ end }}
-</ul>
-`))

cmd/fn-framework-test/main.go

@@ -1,29 +0,0 @@
-package main
-
-import (
-	"log"
-	"os"
-
-	// Blank-import the function package so the init() runs
-	"github.com/GoogleCloudPlatform/functions-framework-go/funcframework"
-	_ "github.com/ray1729/wordsearch"
-)
-
-func main() {
-	// Use PORT environment variable, or default to 8080.
-	port := "8080"
-	if envPort := os.Getenv("PORT"); envPort != "" {
-		port = envPort
-	}
-
-	// By default, listen on all interfaces. If testing locally, run with
-	// LOCAL_ONLY=true to avoid triggering firewall warnings and
-	// exposing the server outside of your own machine.
-	hostname := ""
-	if localOnly := os.Getenv("LOCAL_ONLY"); localOnly == "true" {
-		hostname = "127.0.0.1"
-	}
-	if err := funcframework.StartHostPort(hostname, port); err != nil {
-		log.Fatalf("funcframework.StartHostPort: %v\n", err)
-	}
-}

cmd/generate-data/main.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"encoding/gob"
+	"flag"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/ray1729/wordsearch/anagram"
+	"github.com/ray1729/wordsearch/match"
+)
+
+var wordlist = flag.String("wordlist", "", "Path to wordlist")
+var dataDir = flag.String("data", "", "Path to output directory")
+
+func main() {
+	flag.Parse()
+	os.MkdirAll(*dataDir, 0755)
+	words, err := os.Open(*wordlist)
+	if err != nil {
+		log.Fatal(err)
+	}
+	anagramDB, err := anagram.Load(words)
+	if err != nil {
+		log.Fatal(err)
+	}
+	if err := writeData(*dataDir, "anagram.bin", anagramDB); err != nil {
+		log.Fatal(err)
+	}
+
+	words.Seek(0, 0)
+	matchDB, err := match.Load(words)
+	if err != nil {
+		log.Fatal(err)
+	}
+	if err := writeData(*dataDir, "match.bin", matchDB); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func writeData(dirName string, fileName string, data interface{}) error {
+	path := filepath.Join(dirName, fileName)
+	f, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	return gob.NewEncoder(f).Encode(data)
+}

deploy.sh

@@ -1,9 +0,0 @@
-#!/bin/bash
-
-set -e 
-
-V=$(git describe --tags)
-
-zip function.zip go.mod go.sum cloudfn.go match/match.go anagram/anagram.go util/util.go
-
-gsutil cp function.zip gs://word-search-1729-assets/cloudfn/${V}/

go.mod

@@ -2,44 +2,4 @@ module github.com/ray1729/wordsearch
 
 go 1.21.1
 
-require (
-	cloud.google.com/go/storage v1.33.0
-	github.com/GoogleCloudPlatform/functions-framework-go v1.8.0
-	github.com/rs/cors v1.10.1
-	golang.org/x/text v0.13.0
-)
-
-require (
-	cloud.google.com/go v0.110.4 // indirect
-	cloud.google.com/go/compute v1.20.1 // indirect
-	cloud.google.com/go/compute/metadata v0.2.3 // indirect
-	cloud.google.com/go/functions v1.15.1 // indirect
-	cloud.google.com/go/iam v1.1.0 // indirect
-	github.com/cloudevents/sdk-go/v2 v2.14.0 // indirect
-	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/google/go-cmp v0.5.9 // indirect
-	github.com/google/s2a-go v0.1.4 // indirect
-	github.com/google/uuid v1.3.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.2.5 // indirect
-	github.com/googleapis/gax-go/v2 v2.12.0 // indirect
-	github.com/json-iterator/go v1.1.10 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
-	github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
-	go.opencensus.io v0.24.0 // indirect
-	go.uber.org/atomic v1.4.0 // indirect
-	go.uber.org/multierr v1.1.0 // indirect
-	go.uber.org/zap v1.10.0 // indirect
-	golang.org/x/crypto v0.11.0 // indirect
-	golang.org/x/net v0.12.0 // indirect
-	golang.org/x/oauth2 v0.10.0 // indirect
-	golang.org/x/sys v0.10.0 // indirect
-	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
-	google.golang.org/api v0.132.0 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto v0.0.0-20230706204954-ccb25ca9f130 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20230706204954-ccb25ca9f130 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230711160842-782d3b101e98 // indirect
-	google.golang.org/grpc v1.56.2 // indirect
-	google.golang.org/protobuf v1.31.0 // indirect
-)
+require golang.org/x/text v0.14.0

match/match.go

@@ -7,20 +7,15 @@ import (
 	"github.com/ray1729/wordsearch/util"
 )
 
-type DB interface {
-	FindMatches(s string) []string
-	Add(s string)
-}
-
-type PrefixTreeImpl struct {
+type DB struct {
 	Root *Node
 }
 
-func New() PrefixTreeImpl {
-	return PrefixTreeImpl{Root: &Node{}}
+func New() DB {
+	return DB{Root: &Node{}}
 }
 
-func (db PrefixTreeImpl) Add(s string) {
+func (db DB) Add(s string) {
 	xs := util.LowerCaseAlpha(s)
 	db.Root.add(xs, s)
 }
@@ -57,13 +52,10 @@ func Load(r io.Reader) (DB, error) {
 	for sc.Scan() {
 		db.Add(sc.Text())
 	}
-	if err := sc.Err(); err != nil {
-		return nil, err
-	}
-	return db, nil
+	return db, sc.Err()
 }
 
-func (db PrefixTreeImpl) FindMatches(s string) []string {
+func (db DB) FindMatches(s string) []string {
 	return db.Root.find(util.LowerCaseAlphaOrDot(s))
 }
 

standalone/assets/custom.css

@@ -1,13 +0,0 @@
-div.center {
-    text-align: center;
-}
-
-div#results {
-    height: 60dvh;
-}
-
-div#results > ul {
-    list-style-type: none;
-    overflow-y: auto;
-    height: 100%;
-}

standalone/assets/simple.css

@@ -1,685 +0,0 @@
-/* Global variables. */
-:root,
-::backdrop {
-  /* Set sans-serif & mono fonts */
-  --sans-font: -apple-system, BlinkMacSystemFont, "Avenir Next", Avenir,
-    "Nimbus Sans L", Roboto, "Noto Sans", "Segoe UI", Arial, Helvetica,
-    "Helvetica Neue", sans-serif;
-  --mono-font: Consolas, Menlo, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
-  --standard-border-radius: 5px;
-
-  /* Default (light) theme */
-  --bg: #fff;
-  --accent-bg: #f5f7ff;
-  --text: #212121;
-  --text-light: #585858;
-  --border: #898EA4;
-  --accent: #0d47a1;
-  --code: #d81b60;
-  --preformatted: #444;
-  --marked: #ffdd33;
-  --disabled: #efefef;
-}
-
-/* Dark theme */
-@media (prefers-color-scheme: dark) {
-  :root,
-  ::backdrop {
-    color-scheme: dark;
-    --bg: #212121;
-    --accent-bg: #2b2b2b;
-    --text: #dcdcdc;
-    --text-light: #ababab;
-    --accent: #ffb300;
-    --code: #f06292;
-    --preformatted: #ccc;
-    --disabled: #111;
-  }
-  /* Add a bit of transparency so light media isn't so glaring in dark mode */
-  img,
-  video {
-    opacity: 0.8;
-  }
-}
-
-/* Reset box-sizing */
-*, *::before, *::after {
-  box-sizing: border-box;
-}
-
-/* Reset default appearance */
-textarea,
-select,
-input,
-progress {
-  appearance: none;
-  -webkit-appearance: none;
-  -moz-appearance: none;
-}
-
-html {
-  /* Set the font globally */
-  font-family: var(--sans-font);
-  scroll-behavior: smooth;
-}
-
-/* Make the body a nice central block */
-body {
-  color: var(--text);
-  background-color: var(--bg);
-  font-size: 1.15rem;
-  line-height: 1.5;
-  display: grid;
-  grid-template-columns: 1fr min(45rem, 90%) 1fr;
-  margin: 0;
-}
-body > * {
-  grid-column: 2;
-}
-
-/* Make the header bg full width, but the content inline with body */
-body > header {
-  background-color: var(--accent-bg);
-  border-bottom: 1px solid var(--border);
-  text-align: center;
-  padding: 0 0.5rem 2rem 0.5rem;
-  grid-column: 1 / -1;
-}
-
-body > header h1 {
-  max-width: 1200px;
-  margin: 1rem auto;
-}
-
-body > header p {
-  max-width: 40rem;
-  margin: 1rem auto;
-}
-
-/* Add a little padding to ensure spacing is correct between content and header > nav */
-main {
-  padding-top: 1.5rem;
-}
-
-body > footer {
-  margin-top: 4rem;
-  padding: 2rem 1rem 1.5rem 1rem;
-  color: var(--text-light);
-  font-size: 0.9rem;
-  text-align: center;
-  border-top: 1px solid var(--border);
-}
-
-/* Format headers */
-h1 {
-  font-size: 3rem;
-}
-
-h2 {
-  font-size: 2.6rem;
-  margin-top: 3rem;
-}
-
-h3 {
-  font-size: 2rem;
-  margin-top: 3rem;
-}
-
-h4 {
-  font-size: 1.44rem;
-}
-
-h5 {
-  font-size: 1.15rem;
-}
-
-h6 {
-  font-size: 0.96rem;
-}
-
-p {
-  margin: 1.5rem 0;
-}
-
-/* Prevent long strings from overflowing container */
-p, h1, h2, h3, h4, h5, h6 {
-  overflow-wrap: break-word;
-}
-
-/* Fix line height when title wraps */
-h1,
-h2,
-h3 {
-  line-height: 1.1;
-}
-
-/* Reduce header size on mobile */
-@media only screen and (max-width: 720px) {
-  h1 {
-    font-size: 2.5rem;
-  }
-
-  h2 {
-    font-size: 2.1rem;
-  }
-
-  h3 {
-    font-size: 1.75rem;
-  }
-
-  h4 {
-    font-size: 1.25rem;
-  }
-}
-
-/* Format links & buttons */
-a,
-a:visited {
-  color: var(--accent);
-}
-
-a:hover {
-  text-decoration: none;
-}
-
-button,
-.button,
-a.button, /* extra specificity to override a */
-input[type="submit"],
-input[type="reset"],
-input[type="button"],
-label[type="button"] {
-  border: 1px solid var(--accent);
-  background-color: var(--accent);
-  color: var(--bg);
-  padding: 0.5rem 0.9rem;
-  text-decoration: none;
-  line-height: normal;
-}
-
-.button[aria-disabled="true"], 
-input:disabled,
-textarea:disabled,
-select:disabled,
-button[disabled] {
-  cursor: not-allowed;
-  background-color: var(--disabled);
-  border-color: var(--disabled);
-  color: var(--text-light);
-}
-
-input[type="range"] {
-  padding: 0;
-}
-
-/* Set the cursor to '?' on an abbreviation and style the abbreviation to show that there is more information underneath */
-abbr[title] {
-  cursor: help;
-  text-decoration-line: underline;
-  text-decoration-style: dotted;
-}
-
-button:enabled:hover,
-.button:not([aria-disabled="true"]):hover,
-input[type="submit"]:enabled:hover,
-input[type="reset"]:enabled:hover,
-input[type="button"]:enabled:hover,
-label[type="button"]:hover {
-  filter: brightness(1.4);
-  cursor: pointer;
-}
-
-.button:focus-visible,
-button:focus-visible:where(:enabled),
-input:enabled:focus-visible:where(
-  [type="submit"],
-  [type="reset"],
-  [type="button"]
-) {
-  outline: 2px solid var(--accent);
-  outline-offset: 1px;
-}
-
-/* Format navigation */
-header > nav {
-  font-size: 1rem;
-  line-height: 2;
-  padding: 1rem 0 0 0;
-}
-
-/* Use flexbox to allow items to wrap, as needed */
-header > nav ul,
-header > nav ol {
-  align-content: space-around;
-  align-items: center;
-  display: flex;
-  flex-direction: row;
-  flex-wrap: wrap;
-  justify-content: center;
-  list-style-type: none;
-  margin: 0;
-  padding: 0;
-}
-
-/* List items are inline elements, make them behave more like blocks */
-header > nav ul li,
-header > nav ol li {
-  display: inline-block;
-}
-
-header > nav a,
-header > nav a:visited {
-  margin: 0 0.5rem 1rem 0.5rem;
-  border: 1px solid var(--border);
-  border-radius: var(--standard-border-radius);
-  color: var(--text);
-  display: inline-block;
-  padding: 0.1rem 1rem;
-  text-decoration: none;
-}
-
-header > nav a:hover,
-header > nav a.current,
-header > nav a[aria-current="page"] {
-  border-color: var(--accent);
-  color: var(--accent);
-  cursor: pointer;
-}
-
-/* Reduce nav side on mobile */
-@media only screen and (max-width: 720px) {
-  header > nav a {
-    border: none;
-    padding: 0;
-    text-decoration: underline;
-    line-height: 1;
-  }
-}
-
-/* Consolidate box styling */
-aside, details, pre, progress {
-  background-color: var(--accent-bg);
-  border: 1px solid var(--border);
-  border-radius: var(--standard-border-radius);
-  margin-bottom: 1rem;
-}
-
-aside {
-  font-size: 1rem;
-  width: 30%;
-  padding: 0 15px;
-  margin-inline-start: 15px;
-  float: right;
-}
-*[dir="rtl"] aside {
-  float: left;
-}
-
-/* Make aside full-width on mobile */
-@media only screen and (max-width: 720px) {
-  aside {
-    width: 100%;
-    float: none;
-    margin-inline-start: 0;
-  }
-}
-
-article, fieldset, dialog {
-  border: 1px solid var(--border);
-  padding: 1rem;
-  border-radius: var(--standard-border-radius);
-  margin-bottom: 1rem;
-}
-
-article h2:first-child,
-section h2:first-child {
-  margin-top: 1rem;
-}
-
-section {
-  border-top: 1px solid var(--border);
-  border-bottom: 1px solid var(--border);
-  padding: 2rem 1rem;
-  margin: 3rem 0;
-}
-
-/* Don't double separators when chaining sections */
-section + section,
-section:first-child {
-  border-top: 0;
-  padding-top: 0;
-}
-
-section:last-child {
-  border-bottom: 0;
-  padding-bottom: 0;
-}
-
-details {
-  padding: 0.7rem 1rem;
-}
-
-summary {
-  cursor: pointer;
-  font-weight: bold;
-  padding: 0.7rem 1rem;
-  margin: -0.7rem -1rem;
-  word-break: break-all;
-}
-
-details[open] > summary + * {
-  margin-top: 0;
-}
-
-details[open] > summary {
-  margin-bottom: 0.5rem;
-}
-
-details[open] > :last-child {
-  margin-bottom: 0;
-}
-
-/* Format tables */
-table {
-  border-collapse: collapse;
-  margin: 1.5rem 0;
-}
-
-td,
-th {
-  border: 1px solid var(--border);
-  text-align: start;
-  padding: 0.5rem;
-}
-
-th {
-  background-color: var(--accent-bg);
-  font-weight: bold;
-}
-
-tr:nth-child(even) {
-  /* Set every other cell slightly darker. Improves readability. */
-  background-color: var(--accent-bg);
-}
-
-table caption {
-  font-weight: bold;
-  margin-bottom: 0.5rem;
-}
-
-/* Format forms */
-textarea,
-select,
-input,
-button,
-.button {
-  font-size: inherit;
-  font-family: inherit;
-  padding: 0.5rem;
-  margin-bottom: 0.5rem;
-  border-radius: var(--standard-border-radius);
-  box-shadow: none;
-  max-width: 100%;
-  display: inline-block;
-}
-textarea,
-select,
-input {
-  color: var(--text);
-  background-color: var(--bg);
-  border: 1px solid var(--border);
-}
-label {
-  display: block;
-}
-textarea:not([cols]) {
-  width: 100%;
-}
-
-/* Add arrow to drop-down */
-select:not([multiple]) {
-  background-image: linear-gradient(45deg, transparent 49%, var(--text) 51%),
-    linear-gradient(135deg, var(--text) 51%, transparent 49%);
-  background-position: calc(100% - 15px), calc(100% - 10px);
-  background-size: 5px 5px, 5px 5px;
-  background-repeat: no-repeat;
-  padding-inline-end: 25px;
-}
-*[dir="rtl"] select:not([multiple]) {
-  background-position: 10px, 15px;
-}
-
-/* checkbox and radio button style */
-input[type="checkbox"],
-input[type="radio"] {
-  vertical-align: middle;
-  position: relative;
-  width: min-content;
-}
-
-input[type="checkbox"] + label,
-input[type="radio"] + label {
-  display: inline-block;
-}
-
-input[type="radio"] {
-  border-radius: 100%;
-}
-
-input[type="checkbox"]:checked,
-input[type="radio"]:checked {
-  background-color: var(--accent);
-}
-
-input[type="checkbox"]:checked::after {
-  /* Creates a rectangle with colored right and bottom borders which is rotated to look like a check mark */
-  content: " ";
-  width: 0.18em;
-  height: 0.32em;
-  border-radius: 0;
-  position: absolute;
-  top: 0.05em;
-  left: 0.17em;
-  background-color: transparent;
-  border-right: solid var(--bg) 0.08em;
-  border-bottom: solid var(--bg) 0.08em;
-  font-size: 1.8em;
-  transform: rotate(45deg);
-}
-input[type="radio"]:checked::after {
-  /* creates a colored circle for the checked radio button  */
-  content: " ";
-  width: 0.25em;
-  height: 0.25em;
-  border-radius: 100%;
-  position: absolute;
-  top: 0.125em;
-  background-color: var(--bg);
-  left: 0.125em;
-  font-size: 32px;
-}
-
-/* Makes input fields wider on smaller screens */
-@media only screen and (max-width: 720px) {
-  textarea,
-  select,
-  input {
-    width: 100%;
-  }
-}
-
-/* Set a height for color input */
-input[type="color"] {
-  height: 2.5rem;
-  padding:  0.2rem;
-}
-
-/* do not show border around file selector button */
-input[type="file"] {
-  border: 0;
-}
-
-/* Misc body elements */
-hr {
-  border: none;
-  height: 1px;
-  background: var(--border);
-  margin: 1rem auto;
-}
-
-mark {
-  padding: 2px 5px;
-  border-radius: var(--standard-border-radius);
-  background-color: var(--marked);
-  color: black;
-}
-
-mark a {
-  color: #0d47a1;
-}
-
-img,
-video {
-  max-width: 100%;
-  height: auto;
-  border-radius: var(--standard-border-radius);
-}
-
-figure {
-  margin: 0;
-  display: block;
-  overflow-x: auto;
-}
-
-figcaption {
-  text-align: center;
-  font-size: 0.9rem;
-  color: var(--text-light);
-  margin-bottom: 1rem;
-}
-
-blockquote {
-  margin-inline-start: 2rem;
-  margin-inline-end: 0;
-  margin-block: 2rem;
-  padding: 0.4rem 0.8rem;
-  border-inline-start: 0.35rem solid var(--accent);
-  color: var(--text-light);
-  font-style: italic;
-}
-
-cite {
-  font-size: 0.9rem;
-  color: var(--text-light);
-  font-style: normal;
-}
-
-dt {
-    color: var(--text-light);
-}
-
-/* Use mono font for code elements */
-code,
-pre,
-pre span,
-kbd,
-samp {
-  font-family: var(--mono-font);
-  color: var(--code);
-}
-
-kbd {
-  color: var(--preformatted);
-  border: 1px solid var(--preformatted);
-  border-bottom: 3px solid var(--preformatted);
-  border-radius: var(--standard-border-radius);
-  padding: 0.1rem 0.4rem;
-}
-
-pre {
-  padding: 1rem 1.4rem;
-  max-width: 100%;
-  overflow: auto;
-  color: var(--preformatted);
-}
-
-/* Fix embedded code within pre */
-pre code {
-  color: var(--preformatted);
-  background: none;
-  margin: 0;
-  padding: 0;
-}
-
-/* Progress bars */
-/* Declarations are repeated because you */
-/* cannot combine vendor-specific selectors */
-progress {
-  width: 100%;
-}
-
-progress:indeterminate {
-  background-color: var(--accent-bg);
-}
-
-progress::-webkit-progress-bar {
-  border-radius: var(--standard-border-radius);
-  background-color: var(--accent-bg);
-}
-
-progress::-webkit-progress-value {
-  border-radius: var(--standard-border-radius);
-  background-color: var(--accent);
-}
-
-progress::-moz-progress-bar {
-  border-radius: var(--standard-border-radius);
-  background-color: var(--accent);
-  transition-property: width;
-  transition-duration: 0.3s;
-}
-
-progress:indeterminate::-moz-progress-bar {
-  background-color: var(--accent-bg);
-}
-
-dialog {
-  max-width: 40rem;
-  margin: auto;
-}
-
-dialog::backdrop {
-  background-color: var(--bg);
-  opacity: 0.8;
-}
-
-@media only screen and (max-width: 720px) {
-  dialog {
-    max-width: 100%;
-    margin: auto 1em;
-  }
-}
-
-/* Superscript & Subscript */
-/* Prevent scripts from affecting line-height. */
-sup, sub {
-  vertical-align: baseline;
-  position: relative;
-}
-
-sup {
-  top: -0.4em;
-}
-
-sub { 
-  top: 0.3em; 
-}
-
-/* Classes for notices */
-.notice {
-  background: var(--accent-bg);
-  border: 2px solid var(--border);
-  border-radius: 5px;
-  padding: 1.5rem;
-  margin: 2rem 0;
-}

standalone/main.go

@@ -1,43 +1,72 @@
 package main
 
 import (
-	"bufio"
+	"embed"
+	"encoding/gob"
+	"flag"
 	"log"
+	"net"
 	"net/http"
-	"os"
+	"strings"
 
 	"github.com/ray1729/wordsearch/anagram"
 	"github.com/ray1729/wordsearch/match"
 	"github.com/ray1729/wordsearch/standalone/server"
 )
 
-var matchDB match.DB
+//go:embed data/*
+var fs embed.FS
+
 var anagramDB anagram.DB
+var matchDB match.DB
+
+func initializeDB() error {
+	anagrams, err := fs.Open("data/anagram.bin")
+	if err != nil {
+		return err
+	}
+	defer anagrams.Close()
+	if err := gob.NewDecoder(anagrams).Decode(&anagramDB); err != nil {
+		return err
+	}
+	matches, err := fs.Open("data/match.bin")
+	if err != nil {
+		return err
+	}
+	defer matches.Close()
+	if err := gob.NewDecoder(matches).Decode(&matchDB); err != nil {
+		return err
+	}
+	return nil
+}
 
 func init() {
-	f, err := os.Open("wordlist.txt")
-	if err != nil {
-		log.Fatalf("Error opening word list: %v", err)
-	}
-	defer f.Close()
-	matchDB = match.New()
-	anagramDB = anagram.New()
-	sc := bufio.NewScanner(f)
-	for sc.Scan() {
-		s := sc.Text()
-		matchDB.Add(s)
-		anagramDB.Add(s)
-	}
-	if err := sc.Err(); err != nil {
-		log.Fatalf("Error loading databases: %v", err)
+	if err := initializeDB(); err != nil {
+		log.Fatalf("error initializing databases: %v", err)
 	}
 }
 
 func main() {
-	s := server.New("./assets", matchDB, anagramDB)
-	address := ":8000"
-	log.Printf("Listening on %s", address)
-	if err := http.ListenAndServe(address, s); err != nil {
+	var listenAddr = flag.String("listen", ":8000", "Address or port to listen on, prefix with unix: to listen on a Unix domain socket")
+	flag.Parse()
+
+	server := http.Server{
+		Handler: server.New(matchDB, anagramDB),
+	}
+
+	var listener net.Listener
+	var err error
+	if strings.HasPrefix(*listenAddr, "unix:") {
+		listener, err = net.Listen("unix", strings.TrimPrefix(*listenAddr, "unix:"))
+	} else {
+		listener, err = net.Listen("tcp", *listenAddr)
+	}
+	if err != nil {
+		log.Fatalf("Error listening on %s: %v", *listenAddr, err)
+	}
+	log.Printf("Listening on %s", *listenAddr)
+
+	if err := server.Serve(listener); err != nil {
 		log.Fatal(err)
 	}
 }

standalone/server/server.go

@@ -11,9 +11,8 @@ import (
 	"github.com/ray1729/wordsearch/match"
 )
 
-func New(assetsPath string, matchDB match.DB, anagramDB anagram.DB) http.Handler {
+func New(matchDB match.DB, anagramDB anagram.DB) http.Handler {
 	mux := http.NewServeMux()
-	mux.Handle("/assets/", http.StripPrefix("/assets/", http.FileServer(http.Dir(assetsPath))))
 	mux.HandleFunc("/search", searchHandler(matchDB, anagramDB))
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		renderTemplate(w, home, nil)

standalone/server/templates.go

@@ -8,9 +8,23 @@ var home = template.Must(template.New("home").Parse(`
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-	<link rel="stylesheet" href="/assets/simple.css">
-	<link rel="stylesheet" href="/assets/custom.css">
-	<script src="/assets/htmx.min.js"></script>
+    <link rel="stylesheet" href="https://cdn.simplecss.org/simple.min.css">
+	<script src="https://unpkg.com/htmx.org@1.9.12"></script>
+    <style>
+		div.center {
+			text-align: center;
+		}
+
+		div#results {
+			height: 60dvh;
+		}
+
+		div#results > ul {
+			list-style-type: none;
+			overflow-y: auto;
+			height: 100%;
+		}
+    </style>
     <title>Anagram and Word Search</title>
 </head>
 <body>
@@ -19,12 +33,12 @@ var home = template.Must(template.New("home").Parse(`
   </header>
 
   <main>
-	<form action="/search" method="post" hx-boost="true" hx-target="#results">
+	<form action="/search" method="post" hx-boost="true" hx-target="#results" hx-push-url="false">
 	  <div class="center">
-	    <input type="text" name="pattern" required></input>
+	    <input id="pattern" type="text" name="pattern" required autofocus></input>
 	    <button name="mode" value="match">Match</button>
 	    <button name="mode" value="anagrams">Anagrams</button>
-		<button type="reset">Clear</button>
+		<button type="reset" onclick="getfocus()">Clear</button>
 	  </div>
     </form>
 	<div id="results">
@@ -32,6 +46,11 @@ var home = template.Must(template.New("home").Parse(`
   </main>
 
 </body>
+<script>
+function getfocus() {
+  document.getElementById("pattern").focus();
+}
+</script>
 </html>
 `))
 
@@ -46,7 +65,9 @@ var results = template.Must(template.New("results").Parse(`
 {{ end }}
 <ul>
 {{ range .Results }}
-  <li>{{.}}</li>
+  <li>
+    <a href="https://dicoweb.gnu.org.ua/?q={{.}}&db=gcide&define=1" target="defn">{{.}}</a>
+  </li>
 {{ end }}
 </ul>
 `))