99 lines
2.7 KiB
Markdown
99 lines
2.7 KiB
Markdown
---
|
|
title: "Markdown Transpiler Thingy"
|
|
date: 2020-07-21
|
|
draft: false
|
|
category: article
|
|
description: Full Bash/GNU coreutils implementation in article
|
|
---
|
|
|
|
# Markdown to HTML
|
|
|
|
A while back I made [gensite](https://gitlab.com/shockrah/site-generator) a static site generator that was built with pandoc users in mind.
|
|
Along with the main script I packaged another script _translate.sh_ which is a (I think) full markdown to html translator.
|
|
|
|
It uses mostly coreutil things like perl, echo, sed, and grep so it's pretty portable to most systems. Oh and it's built with Bash; though I'm probably going to updated it to run with Dash, a very strict POSIX shell to make it even more compatible.
|
|
|
|
Oh yea did I mention its only 62 lines of actual code?
|
|
Here's the full script in case you want it, or maybe want to add some new feature/syntax or whatevs.
|
|
|
|
[Repo Link](https://gitlab.com/shockrah/site-generator)
|
|
|
|
|
|
```sh
|
|
#!/bin/bash
|
|
|
|
# Why? becausee a simple markdown to html converter is required for those that
|
|
# don't want to install pandoc that don't have it already
|
|
|
|
IFS=$'\n'
|
|
code=0
|
|
ul=0
|
|
paragraph() {
|
|
# Replace  with proper img tag links
|
|
[ -z $1 ] && echo ''
|
|
[ 1 = $code ] && echo $1 || \
|
|
echo '<p>'$1'</p>' | sed -E 's/`(.*)`/<code>\1<\/code>/g;s/\!\[(.*)\]\((.*)\)/<img src="\2" alt="\1">/g;s/\[(.*)\]\((.*)\)/<a href="\2">\1<\/a>/g'
|
|
}
|
|
|
|
convert_links() {
|
|
sed -E 's/\[(.*)\]\((.*)\)/<a href="\2">\1<\/a>/g' < /dev/stdin
|
|
}
|
|
|
|
header() {
|
|
depth=$(echo $1 | grep '^##*' -o | tr -d '\n' | wc -m)
|
|
line=${1:$depth}
|
|
echo "<h$depth>$line</h$depth>" | convert_links
|
|
}
|
|
|
|
blockquote() {
|
|
# remove starting > symbols before doing anything
|
|
echo "<blockquote>${1:1}</blockquote>" | convert_links
|
|
}
|
|
|
|
|
|
fluff_trim() {
|
|
perl -0777 -pe 's/<\/p>\n<p>//g;s/<p><\/p>//g' < /dev/stdin
|
|
}
|
|
|
|
code_chunk() {
|
|
if [ 0 = $code ];then
|
|
code=1
|
|
echo '<pre><code>'
|
|
else
|
|
code=0
|
|
echo '</pre></code>'
|
|
fi
|
|
}
|
|
|
|
set_ul() {
|
|
if [ 1 = $ul ];then
|
|
ul=2
|
|
fi
|
|
}
|
|
|
|
unordered_list() {
|
|
case $ul in
|
|
0)echo "<ul><li>${1:1}</li>";ul=1;;
|
|
1)echo "<li>${1:1}</li>";ul=1;;
|
|
2)echo "<li>${1:1}</li></ul>";ul=0;;
|
|
esac
|
|
}
|
|
|
|
if [ -z $1 ];then
|
|
echo Usage: $0 file.md
|
|
exit 0
|
|
fi
|
|
|
|
while read line;do
|
|
case $line in
|
|
\#*) set_ul; header $line;;
|
|
\>*) set_ul; blockquote $line;;
|
|
\`\`\`) set_ul; code_chunk;;
|
|
\**) unordered_list $line;;
|
|
# TODO: ordered_lists
|
|
*) set_ul; paragraph "$line";;
|
|
esac
|
|
done < "$1" | fluff_trim | grep -v '^$'
|
|
|
|
```
|