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diff --git a/www/blog/2023-01-06/index.html b/www/blog/2023-01-06/index.html deleted file mode 100644 index 1a97dd8..0000000 --- a/www/blog/2023-01-06/index.html +++ /dev/null @@ -1,184 +0,0 @@ -<!DOCTYPE html> -<html lang="en"> -<head> - <meta charset="utf-8"> - <meta name="generator" - content="HTML Tidy for HTML5 for Linux version 5.7.45"> - <title>senders.io - How I Generate My RSS Feed</title> - <link rel='stylesheet' - type='text/css' - href='/index.css'> - <meta name="viewport" - content="width=device-width, initial-scale=1"> -</head> -<body> - <div id='header'> - <a class='title' - href='/'>senders.io</a> - <nav> - <a href="/blog">blog</a> <a rel="external noopener noreferrer" - target="_blank" - href="https://github.com/s3nd3r5">github</a> <a rel= - "external noopener noreferrer" - target="_blank" - href="https://git.senders.io">cgit</a> <a rel= - "me external noopener noreferrer" - target="_blank" - href="https://tech.lgbt/@senders">fedi</a> - </nav> - </div> - <div id="body"> - <article> - <h1>How I Generate My RSS Feed</h1> - <p>I only just now started supplying an RSS feed to you fine people! You - can subscribe to it at <a href= - "/blog/feed.rss">www.senders.io/blog/feed.rss</a>!</p> - <p>I decided rather than manually generating the file contents I’d hook - into my pre-existing publish scripts to be able to generate the RSS - file.</p> - <h2>Publishing blog posts - shell scripts ftw</h2> - <p>In <a href="/blog/2022-11-06/">My Markdown -> HTML Setup</a> I - touch on how I publish my markdown files into HTML for this blog. But - what I don’t <em>really</em> touch on is the shell scripts that tie the - whole process together.</p> - <p>What I have is two, now three, scripts that feed the whole - process:</p> - <ol> - <li><code>publish-blog.sh</code> - the main script</li> - <li><code>compile-md.sh</code> - generates the HTML output</li> - <li><code>update-feed.sh</code> - generates/appends the RSS feed</li> - </ol> - <p>The <code>update-feed.sh</code> script is the new one I just - added.</p> - <p><code>publish-blog.sh</code> is the primary interface, I supply the - date of the post and the path to the md file and that calls compile and - update to automate the entire process.</p> - <p>Without going into TOO much detail you can view the latest versions of - the scripts at <a rel="external noopener noreferrer" - target="_blank" - href= - "https://git.senders.io/senders/senders-io/tree/">git.senders.io/senders/senders-io/tree/</a>.</p> - <p>But the gist of the scripts is I parse out the necessary details, - find/replace some tokens in template files I have setup for headers and - footers, and concat the outputs into the final output HTML files, and now - RSS feed.</p> - <h3>update-feed.sh</h3> - <p>Source File: <a rel="external noopener noreferrer" - target="_blank" - href= - "https://git.senders.io/senders/senders-io/tree/update-feed.sh">git.senders.io/senders/senders-io/tree/update-feed.sh</a></p> - <p>This script is pretty interesting. I didn’t want to deal with any XML - parsers and libraries to just maintain a proper XML rss file and push - items into the tree. Rather, I just follow a similar setup to my markdown - generation. I leverage some temporary files to hold the contents, a - static temp file for the previously generated content, and at the end - swap the temp file with the real file.</p> - <p>I take in an input of the publish date (this is the date from the - publish script), the title, and the HTML file path. These are all already - variables in the publish script, but also something I can manually supply - if I need to publish an older article, or something I wrote directly in - HTML.</p> - <p>The core of the script is found here:</p> - <pre><code>PUBDATE=$(date -d "$1" -R) -TITLE=$2 -FILE_PATH=$3 -PERMALINK=$(echo "${FILE_PATH}" | sed -e "s,${TKN_URL_STRIP},${URL_PREFIX},g") -LINK=$(echo "${PERMALINK}" | sed -e "s,${TKN_INDEX_STRIP},,g") - -# Generate TMP FEED File Header - -cat -s $FILE_RSS_HEADER > $FILE_TMP_FEED -sed -i -E "s/${TKN_BUILDDATE}/${BUILDDATE}/g" $FILE_TMP_FEED -sed -i -E "s/${TKN_PUBDATE}/${PUBDATE}/g" $FILE_TMP_FEED - -# Generate TMP Item File - -cat -s $FILE_RSS_ITEM_HEADER > $FILE_TMP_ITEM -sed -i -E "s~${TKN_TITLE}~${TITLE}~g" $FILE_TMP_ITEM -sed -i -E "s/${TKN_PUBDATE}/${PUBDATE}/g" $FILE_TMP_ITEM -sed -i -E "s,${TKN_PERMALINK},${PERMALINK},g" $FILE_TMP_ITEM -sed -i -E "s,${TKN_LINK},${LINK},g" $FILE_TMP_ITEM -sed -n "/<article>/,/<\/article>/p" $FILE_PATH >> $FILE_TMP_ITEM -cat -s $FILE_RSS_ITEM_FOOTER >> $FILE_TMP_ITEM - -# Prepend Item to items list and overwrite items file w/ prepended item -## In order to "prepend" the item (so it's on top of the others) -## We need to concat the tmp item file with the existing list, then -## we can push the contents over the existing file -## We use cat -s to squeeze the blank lines -cat -s $FILE_ITEM_OUTPUT >> $FILE_TMP_ITEM -cat -s $FILE_TMP_ITEM > $FILE_ITEM_OUTPUT - -# Push items to TMP FEED -cat -s $FILE_ITEM_OUTPUT >> $FILE_TMP_FEED - -# Push RSS footer to TMP FEED -cat -s $FILE_RSS_FOOTER >> $FILE_TMP_FEED -echo $FILE_TMP_FEED - -# Publish feed -cat -s $FILE_TMP_FEED > $FILE_RSS_OUTPUT - -echo "Finished generating feed" -</code></pre> - <p>Some key takeaways are:</p> - <ol> - <li>sed lets you do regex with delimiters that AREN’T <code>/</code> so - you can substitute something that shouldn’t actually ever show up in - your regex. For me that is <code>~</code>.</li> - <li>I always forget you can use sed to extract between tokens - which - is how I get the CDATA for the RSS: <code>sed -n - "/<article>/,/<\/article>/p"</code></li> - <li><code>mktemp</code> is really REALLY useful - and I feel is under - utilized in shellscripting</li> - </ol> - <p>The obvious cracks are:</p> - <ol> - <li>I rely SO much on <code>sed</code> that it’s almost certainly going - to break</li> - <li>I don’t have much other flag control to do partial generation - so - if I need to do something either starting partway through or not finish - the full process, I don’t have that.</li> - <li>Sometimes things can break silently and it will go through, there - is no verification or like manual checking along the way before - publishing the feed.rss</li> - </ol> - <p>The final two can easily be managed by writing the feed to a location - that isn’t a temp file and I can manually do the <code>cat -s - $FILE_TMP_FEED > www/blog/feed.rss</code> myself after I check it - over.</p> - <p>But for now I’ll see if I ever have to redo it. I don’t think anyone - will actually sub to this so I don’t really need to care that much if I - amend the feed.</p> - <h2>Where to put the feed URL</h2> - <p>I never intended to provide an RSS feed. I doubt anyone but me reads - this, and from my previous experience with gemini feed generation was a - bit of a headache.</p> - <p>A quick aside: I really only decided thanks to Mastodon. I was - thinking during the Twitter meltdown “what if twitter but RSS” (I know - super unique idea). But basically like a true “microblog”. And some OSS - tools to publish your blog. This got me reading the RSS spec and looking - into it more - which then lead me down the using the RSS readers more (in - conjunction with gemini, and Cortex podcast talking about using RSS - more).</p> - <p>But I’ve decided to just put the RSS feed in the blog index, on my - homepage, and that’s it. I don’t need it permanently in the header.</p> - <h2>Conclusion</h2> - <p>I didn’t have much to share here, it doesn’t make too much sense to - write a big post on what can be explained better by just checking out the - shell scripts in my git source. The code speaks better than I ever - could.</p> - <p>I really, really like shell scripting.</p> - </article> - <div id="footer"> - <i>January 06, 2023</i> - </div> - <div id='copyright'> - © 2023 senders dot io - <a rel="license external noopener noreferrer" - target="_blank" - href="https://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA - 4.0</a> unless otherwise noted. - </div> - </div> -</body> -</html> |