Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644 (file)
index 0000000..364fdec
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+public/

diff --git a/GNUmakefile b/GNUmakefile
new file mode 100644 (file)
index 0000000..fa30f68
--- /dev/null
+++ b/GNUmakefile
@@ -0,0 +1,46 @@
+SHELL = /bin/sh
+
+# This GNUmakefile searches the `sources/` directory for files with an extension of `.xml` and applies `transform.xslt` to them, outputting the result in one of two locations :—
+#
+# • For files with a location of `sources/index.xml` or `sources/index-*.xml`, the transformed file will be written to `public/%.xhtml` (where `%` is the filename).
+#
+# • For all other files with a location of `sources/*.xml` or `sources/*/*.xml`, the transformed file will be written to `public/%/index.xhtml` (where `%` is the filename and subdirectory if applicable).
+# Only one level of subdirectory is supported.
+#
+# By default, running `make` will do this for all applicable source files.
+#
+# ___
+#
+# © 2022 Lady [@ Lady’s Computer]
+#
+# This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+# If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+XHTMLEXT = xhtml
+XSLT = xsltproc
+XSLTOPTS =
+
+headers := $(wildcard *-header.xml)
+footers := $(wildcard *-footer.xml)
+override prerequisites := transform.xslt $(headers) $(footers)
+
+override indexsources := $(wildcard sources/index.xml sources/index-*.xml)
+override indices := $(patsubst sources/%.xml,public/%.$(XHTMLEXT),$(indexsources))
+
+override pagesources := $(filter-out $(indexsources),$(wildcard sources/*.xml sources/*/*.xml))
+override pages := $(patsubst sources/%.xml,public/%/index.$(XHTMLEXT),$(pagesources))
+
+override makexslt = $(XSLT) --nonet --novalid $(XSLTOPTS) -o $(2) transform.xslt $(1)
+
+all: $(indices) $(pages) ;
+
+$(indices): public/%.$(XHTMLEXT): sources/%.xml $(prerequisites)
+       $(call makexslt,$<,$@)
+
+$(pages): public/%/index.$(XHTMLEXT): sources/%.xml $(prerequisites)
+       $(call makexslt,$<,$@)
+
+clean:
+       rm -f $(indices) $(pages)
+
+.PHONY: all clean ;

diff --git a/LICENSE b/LICENSE
new file mode 100644 (file)
index 0000000..a612ad9
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.

diff --git a/README.markdown b/README.markdown
new file mode 100644 (file)
index 0000000..216d4d8
--- /dev/null
+++ b/README.markdown
@@ -0,0 +1,109 @@
+# X·S·L·T Shrine Generator
+
+A very lightweight and oldweb static site generator, mainly targeted
+at eliminating the need for `<iframe>` headers and footers without
+substantially changing the authoring flow.
+
+## Features
+
+- Really simple shrine generation
+
+- One command: `make`
+
+## Prerequisites
+
+These things come preinstalled on many platforms :—
+
+- G·N·U Make (run `make --version` to see if it is installed)
+
+- libxslt (run `xsltproc --version` to see if it is installed)
+
+You will also need to know how to write X·M·L, and how to navigate to a
+directory via the command line and run `make`.
+
+Finally, you will need a copy of this repository, which serves as a
+template.
+
+## Basic Usage
+
+In the `sources/` directory, create X·M·L files containing the unique
+content of your pages. Generally you will want a general landing page
+called `index.xml`, and a variety of other subpages. The root element
+of these files should typically be an H·T·M·L `<article>` element
+(remember to declare the X·H·T·M·L namespace!), and you should give it
+a `@lang` attribute as well. An example is provided.
+
+The `@data-shrine-header` and `@data-shrine-footer` attributes on the
+root elements of your pages specify the names of the header and footer
+to use on the page. You can use headers and footers to supply page
+navigation, branding, and so forth. For each header and footer you
+specify, you will need to create a corresponding `$-header.xml` or
+`$-footer.xml` (where `$` is the header/footer name) which provides
+the contents. These files should be placed in *this* (repository root)
+directory, not in `sources/`.
+
+The `template.xml` file in this directory contains the main page
+template, and you should edit it to add styling and so forth to your
+page. The `<shrine-header>`, `<shrine-content>`, and `<shrine-footer>`
+elements will be replaced by the page header, content, and footer,
+respectively.
+
+Finally, just run `make` from this directory, and X·H·T·M·L files
+corresponding to your source files will be created in the `public/`
+directory (which you can then serve statically from your server).
+
+## Notes
+
+- The created files have a `.xhtml` extension and *need* to be served
+  with a `application/xhtml+xml` (or `application/xml`) media type. Not
+  all servers know how to serve `.xhtml` files; if this is you, you may
+  have better luck with `make XHTMLEXT=xml` (which will produce `.xml`
+  files instead).
+
+  - Some free hosting options require that “index” pages have an
+    extension of `.html`; these will unfortunately not work. It is
+    possible to extend the makefile to generate `index.html` redirects
+    to `index.xhtml` with the following code :—
+
+    ```make
+    override redirects := $(patsubst public/%.$(XHTMLEXT),public/%.html,$(indices) $(pages))
+
+    all: $(redirects) # in addition to the previously declared prerequisites
+
+    $(redirects):
+       # You may want a more involved redirect page than this, but it’s an example…
+       echo '<!DOCTYPE html><meta http-equiv="refresh" content="0;url=./index.xhtml">' > $@
+    ```
+
+    This should be considered a last resort, but it can be used to get
+    your site working on e·g Neocities.
+
+- Files at `sources/index.xml` and `sources/index-*.xml` will produce
+  output at `public/%.xhtml` (where `%` is the filename).
+
+- All other files at `sources/*.xml` and `sources/*/*.xml` will produce
+  output at `public/%/index.xhtml` (where `%` is the filename and
+  optional subdirectory). Only one level of subdirectory is supported.
+
+- The transformation doesn’t do any rewriting of links. Make sure you
+  write them to point to the *final* location of the files, not their
+  location within the `sources/` directory.
+
+- Any `@data-*` attributes (other than `@data-shrine-*` attributes) you
+  add to the root (`<article>`) element will be copied onto the root
+  (`<html>`) element of the template, as will `@lang` and `@xml:lang`.
+  You can use this to help configure page‐specific styling.
+
+- You can insert content into the `<head>` of the template by setting
+  `@slot="shrine-head"` on the appropriate elements. For example, one
+  might customize the title of a page like
+  `<title slot="shrine-head">My Title | My Cool Shrine</title>`.
+
+- If you delete files from `sources/`, the corresponding files in
+  `public/` will **not** be deleted and will need to be manually
+  removed. An easy way to ensure that there are no outdated files in
+  `public/` is just to delete the entire directory before running
+  `make`.
+
+- This repository is intended as a starting point; feel free to
+  customize it to your needs!

diff --git a/sources/index.xml b/sources/index.xml
new file mode 100644 (file)
index 0000000..70803f0
--- /dev/null
+++ b/sources/index.xml
@@ -0,0 +1,3 @@
+<article xmlns="http://www.w3.org/1999/xhtml" lang="en">
+       <h1>My Cool Shrine</h1>
+</article>

diff --git a/template.xml b/template.xml
new file mode 100644 (file)
index 0000000..dc8ee72
--- /dev/null
+++ b/template.xml
@@ -0,0 +1,9 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+</head>
+<body>
+<shrine-header/>
+<shrine-content/>
+<shrine-footer/>
+</body>
+</html>

diff --git a/transform.xslt b/transform.xslt
new file mode 100644 (file)
index 0000000..0bd34a8
--- /dev/null
+++ b/transform.xslt
@@ -0,0 +1,163 @@
+<!--
+This is an extremely simple XSLT transform which simply reads in a
+`template.xml` and :—
+
+• Replaces the `<html:shrine-content>` element with the content of the document it is being applied to,
+
+• If the root element of the document it is being applied to has a `@data-shrine-header` attribute, replaces the `<html:shrine-header>` with the contents of the corresponding header file (`⸺-header.xml`), and
+
+• If the root element of the document it is being applied to has a `@data-shrine-footer` attribute, replaces the `<html:shrine-footer>` with the contents of the corresponding footer file (`⸺-footer.xml`), and
+
+• Copies any remaining `@lang` or `@data-*` attributes from the root element of the document it is being applied to over to the root element of the template.
+
+The intent is that this file is used in conjunction with a Makefile to quickly automate inserting header and footer content into documents.
+The exact feature·set might be somewhat more expansive than the description above; for a lengthier overview of what this file does, see `README.markdown`.
+
+Feel free to add additional templates and features to suit your needs!
+
+___
+
+© 2022 Lady [@ Lady’s Computer]
+
+This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
+-->
+<xslt:transform
+       xmlns="http://www.w3.org/1999/xhtml"
+       xmlns:exslt="http://exslt.org/common"
+       xmlns:html="http://www.w3.org/1999/xhtml"
+       xmlns:xslt="http://www.w3.org/1999/XSL/Transform"
+       version="1.0"
+>
+       <xslt:variable name="source" select="current()"/>
+       <xslt:variable name="template" select="document('./template.xml')"/>
+
+       <!--
+               Instead of actually processing the root node, process the template in `template` mode.
+       -->
+       <xslt:template match="/">
+               <xslt:apply-templates select="exslt:node-set($template)" mode="template"/>
+       </xslt:template>
+
+       <!--
+               Process non‐template elements.
+               By default, just copy the element, but remove any `@data-shrine-*` attribuets or `@slot` attributes with a value that begins with `shrine-`.
+       -->
+       <xslt:template match="*|text()" mode="content">
+               <xslt:copy>
+                       <xslt:for-each select="@*[not(starts-with(name(), 'data-shrine-')) and not(name()='slot' and starts-with(., 'shrine-'))]">
+                               <xslt:copy/>
+                       </xslt:for-each>
+                       <xslt:for-each select="*|text()">
+                               <xslt:choose>
+                                       <xslt:when test="@slot[starts-with(., 'shrine-')]">
+                                               <xslt:comment>
+                                                       <text> placeholder for slotted element </text>
+                                               </xslt:comment>
+                                       </xslt:when>
+                                       <xslt:otherwise>
+                                               <xslt:apply-templates select="." mode="content"/>
+                                       </xslt:otherwise>
+                               </xslt:choose>
+                       </xslt:for-each>
+               </xslt:copy>
+       </xslt:template>
+
+       <!--
+               Process template elements.
+               By default, just copy the element.
+               This behaviour will be overridden for certain elements to insert the page content.
+       -->
+       <xslt:template match="*|text()" mode="template">
+               <xslt:copy>
+                       <xslt:for-each select="@*">
+                               <xslt:copy/>
+                       </xslt:for-each>
+                       <xslt:apply-templates mode="template"/>
+               </xslt:copy>
+       </xslt:template>
+
+       <!--
+               Process the template `<html>`.
+               This copies over `@lang` and non‐shrine `@data-*` attributes from the root node.
+       -->
+       <xslt:template match="html:html" mode="template">
+               <xslt:copy>
+                       <xslt:for-each select="@*">
+                               <xslt:copy/>
+                       </xslt:for-each>
+                       <xslt:for-each select="exslt:node-set($source)/*/@*[name()='lang' or name()='xml:lang' or starts-with(name(), 'data-') and not(starts-with(name(), 'data-shrine-'))]">
+                               <xslt:if test="not(exslt:node-set($template)/*/@*[name()=name(current())])">
+                                       <xslt:copy/>
+                               </xslt:if>
+                       </xslt:for-each>
+                       <xslt:apply-templates mode="template"/>
+               </xslt:copy>
+       </xslt:template>
+
+       <!--
+               Process the template `<head>`.
+               This inserts appropriate metadata based on the document.
+       -->
+       <xslt:template match="html:head" mode="template">
+               <xslt:copy>
+                       <xslt:for-each select="@*">
+                               <xslt:copy/>
+                       </xslt:for-each>
+                       <xslt:for-each select="exslt:node-set($source)//*[@slot='shrine-head']">
+                               <xslt:text>&#x0A;</xslt:text>
+                               <xslt:apply-templates select="." mode="content"/>
+                       </xslt:for-each>
+                       <xslt:if test="not(exslt:node-set($source)//html:title[@slot='shrine-head'])">
+                               <xslt:text>&#x0A;</xslt:text>
+                               <title>
+                                       <xslt:apply-templates select="exslt:node-set($source)//html:h1" mode="text"/>
+                               </title>
+                       </xslt:if>
+                       <xslt:apply-templates mode="template"/>
+               </xslt:copy>
+       </xslt:template>
+
+       <!--
+               Process the template header.
+               Read the `@data-header` attribute of the root element, append `"-header.xml"` to the end of it, and process the resulting document.
+               If no `@data-header` attribute is provided, no header is rendered.
+       -->
+       <xslt:template match="html:shrine-header" mode="template">
+               <xslt:for-each select="exslt:node-set($source)/*/@data-shrine-header">
+                       <xslt:apply-templates select="document(concat('./', ., '-header.xml'), $template)/*" mode="content"/>
+               </xslt:for-each>
+       </xslt:template>
+
+       <!--
+               Process the template footer.
+               Read the `@data-footer` attribute of the root element, append `"-footer.xml"` to the end of it, and process the resulting document.
+               If no `@data-footer` attribute is provided, no footer is rendered.
+       -->
+       <xslt:template match="html:shrine-footer" mode="template">
+               <xslt:for-each select="exslt:node-set($source)/*/@data-shrine-footer">
+                       <xslt:apply-templates select="document(concat('./', ., '-footer.xml'), $template)/*" mode="content"/>
+               </xslt:for-each>
+       </xslt:template>
+
+       <!--
+               Process the content.
+       -->
+       <xslt:template match="html:shrine-content" mode="template">
+               <xslt:apply-templates select="exslt:node-set($source)/*" mode="content"/>
+       </xslt:template>
+
+       <!--
+               Provide the complete text content of the provided element.
+       -->
+       <xslt:template match="*|text()" mode="text">
+               <xslt:choose>
+                       <xslt:when test="self::*">
+                               <xslt:apply-templates mode="text"/>
+                       </xslt:when>
+                       <xslt:when test="self::text()">
+                               <xslt:copy/>
+                       </xslt:when>
+               </xslt:choose>
+       </xslt:template>
+</xslt:transform>