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author | Adam House <a@context.town> | 2024-06-21 08:23:12 -0500 |
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committer | Adam House <a@context.town> | 2024-06-21 08:26:17 -0500 |
commit | 3ede8ffa588cd6d4e60519b87b4ec61eff730092 (patch) | |
tree | f390c97bfe892cb60926133156f584cd5e5b9166 |
-rw-r--r-- | COPYING | 674 | ||||
-rw-r--r-- | README.md | 56 | ||||
-rwxr-xr-x | duz | 174 |
3 files changed, 904 insertions, 0 deletions
@@ -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. 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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>. diff --git a/README.md b/README.md new file mode 100644 index 0000000..bfbb734 --- /dev/null +++ b/README.md @@ -0,0 +1,56 @@ +# duz + +`duz` is a minimal static site generator for simple [Djot](https://djot.net) +websites, written in bash. I designed it for my own websites. + +`duz` expects a directory containing a `src` subdirectory as an argument. It +will traverse that directory, transforming any `.dj` files it finds into `.html` +files using [DMOS](https://git.sr.ht/~bitfehler/dmos), which should be available +in PATH. + +It has two special features: + +- **Headers and Footers**: If `_header.html` and/or `_footer.html` files exist +in `src` at the top level, it will prepend and append those, respectively, to +all HTML files it generates. Table stakes for an SSG. It will not include the +raw header and footer files in the `dst` output. + +- **Atom Feed**: You can optionally specify a directory (`/blog` by default) +which, if it exists, will be given an Atom feed and index file. To facilitate +this, `.dj` files in this directory are expected to have the following front +matter: + + ``` + Title + 2024-05-06 + +++ + ``` + +The first line is the title of the post, and the second line is the date +of the post in ISO-8601. The plus signs operate as a delimiter. This lets `duz` +generate a proper feed. + +The directory used in this process is not expected to have any other content, or +any subdirectories. + +Other than these features, `duz` passes files through untouched. + +## Usage + +`duz -h` + +## Limitations + +At the moment, the DMOS command arguments are not customizable. `duz` always +uses `dmos --toc` for the actual pages and raw `dmos` without arguments for the +contents of the Atom feed. + +If you use the Atom feed functionality, both a header and footer must exist, and +they must end and start with `<body>` tags, respectively, for the Atom feed and +the index page to be valid. Also, for this folder, proper front matter (title on +the first line, ISO 8601 date on the second line) is required. + +## Contributions + +I wrote `duz` for my own use and it's a pretty quick-and-dirty little thing, but +if you like it, I welcome your contributions via `git-send-email` patchset. @@ -0,0 +1,174 @@ +#!/bin/bash + +# duz: static site generator +# Copyright Adam House 2024 + +# 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/>. + +# Default values +base_url="https://www.example.com" +blog_dir_name="blog" +author_name="John Doe" +blog_title="Example" +index_title="Blog" + +usage() { + echo "Usage: $0 [-h] [-u base_url] [-d blog_dir_name] [-a author_name] [-t blog_title] [-i index_title] [dir]" + echo " -h Show this help message and exit." + echo " -u Specify the base URL (default: https://www.example.com)." + echo " -d Specify the blog directory name (default: 'blog')." + echo " -a Specify the author's name (default: 'John Doe')." + echo " -t Specify the blog title (default: 'Example')." + echo " -i Specify the name of the blog according to the index page (default: 'Blog')." + echo " dir Specify the base directory to process (default: current directory)." + exit 1 +} + +# Parse options +while getopts ":hu:d:a:t:i:" opt; do + case ${opt} in + h ) + usage + ;; + u ) + base_url=$OPTARG + ;; + d ) + blog_dir_name=$OPTARG + ;; + a ) + author_name=$OPTARG + ;; + t ) + blog_title=$OPTARG + ;; + i ) + index_title=$OPTARG + ;; + \? ) + echo "Invalid option: $OPTARG" 1>&2 + usage + ;; + : ) + echo "Invalid option: $OPTARG requires an argument" 1>&2 + usage + ;; + esac +done +shift $((OPTIND -1)) + +dir="${1:-.}" +src_dir="$dir/src" + +if [ ! -d "$src_dir" ]; then + echo "no src directory" + exit 1 +fi + +dst_dir="$dir/dst" +rm -rf "$dst_dir" +mkdir "$dst_dir" + +src_words_dir="$src_dir/$blog_dir_name" +dst_words_dir="$dst_dir/$blog_dir_name" +feed_path="$dst_words_dir/atom.xml" +index_page="$dst_words_dir/index.html" + +if [[ -d "$src_words_dir" ]]; then + mkdir "$dst_words_dir" + + # Start the feed + echo '<?xml version="1.0" encoding="utf-8"?>' > $feed_path + echo '<feed xmlns="http://www.w3.org/2005/Atom">' >> $feed_path + echo "<title>$blog_title</title>" >> $feed_path + echo "<link href=\"$base_url/$blog_dir_name/atom.xml\" rel=\"self\" type=\"application/atom+xml\"/>" >> $feed_path + echo "<link href=\"$base_url/$blog_dir_name/\"/>" >> $feed_path + echo "<updated>$(date +"%Y-%m-%dT%H:%M:%SZ")</updated>" >> $feed_path + echo "<author><name>$author_name</name></author>" >> $feed_path + echo '<generator>duz</generator>' >> $feed_path + echo "<id>$base_url/$blog_dir_name/</id>" >> $feed_path + + # Start the index page + echo "<h1>$index_title <span id=\"feed\"><a href=\"/$blog_dir_name/atom.xml\"><i>(feed)</i></a></span></h1><ul>" >> $index_page + + # Generate entries for the feed and index page + find "$src_words_dir" -name '*.dj' | while read file; do + # second line is the date; use this for sorting in reverse order + second_line=$(sed -n '2{p;q;}' "$file") + + if ! [[ $second_line =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}$ ]]; then + echo "file in atom feed $file has malformed front matter" + exit 1 + fi + + echo "$second_line $file" + done | sort -r | cut -d' ' -f2- | while read file; do + title=$(sed -n '1p' "$file") # First line for title + date=$(sed -n '2p' "$file") # Second line for date + content=$(sed -n '/+++/,$p' "$file" | sed '1d' | dmos) # Everything after '+++' + + html_filename=$(basename "$file" | sed 's/\.dj$/.html/') + + echo '<entry>' >> $feed_path + echo "<title>${title}</title>" >> $feed_path + echo "<link href=\"$base_url/$blog_dir_name/$html_filename\"/>" >> $feed_path + echo "<id>$base_url/$blog_dir_name/$html_filename</id>" >> $feed_path + echo "<published>${date}T00:00:00Z</published>" >> $feed_path + echo "<updated>${date}T00:00:00Z</updated>" >> $feed_path + echo "<content type=\"html\">$(echo $content | sed 's/&/\&/g; s/</\</g; s/>/\>/g; s/\"/\"/g;')</content>" >> $feed_path + echo '</entry>' >> $feed_path + + echo "<li><p><a href=\"/$blog_dir_name/$html_filename\"><strong>${date}</strong></a> – ${title}</p></li>" >> $index_page + + done + + echo '</feed>' >> $feed_path + echo '</ul>' >> $index_page +fi + +# Copy src to dst and process files, excluding _header.html and _footer.html +find "$dir/src" -type f | while read -r file_path; do + file="${file_path#$dir/src/}" + if [[ "$file" == "_header.html" ]] || [[ "$file" == "_footer.html" ]]; then + continue + fi + mkdir -p "$dst_dir/$(dirname "$file")" + if [[ "$file" == *.dj ]]; then + # Process .dj files with dmos and handle errors + if grep -q '+++' "$file_path"; then + # Delimiter exists, process accordingly + sed -n '/+++/,$p' "$file_path" | sed '1d' | + dmos --toc > "$dst_dir/${file%.dj}.html" + elif [[ "$file" == index.dj ]]; then + # No delimiter found, and we are on top index, so no TOC + dmos "$file_path" > "$dst_dir/${file%.dj}.html" + else + # No delimiter found, process the whole file + if ! dmos --toc "$file_path" > "$dst_dir/${file%.dj}.html"; then + echo "Error processing $file with dmos" + exit 1 + fi + fi + else + # Copy file over + cp "$file_path" "$dst_dir/$file" + fi +done + +# prepend header and append footer to final files +for html_file in $(find "$dst_dir" -type f -name "*.html"); do + [ -f "$dir/src/_header.html" ] && cat "$dir/src/_header.html" "$html_file" > "$html_file.tmp" && mv "$html_file.tmp" "$html_file" + [ -f "$dir/src/_footer.html" ] && cat "$dir/src/_footer.html" >> "$html_file" +done + +exit 0 |