build_page.sh - kloeckner.com.ar - Backup of part of my webpage

scripts/build_page.sh (137 lines)
Line numbers
   1 #!/bin/sh
   2 
   3 # The most bloated, non-mantainable, non-readable static site generator
   4 # by: Martin Kloeckner - https://kloeckner.com.ar
   5 # Dependencies: sed, grep, lowdown.
   6 
   7 # Template: the converted html text is placed on a copy of the template
   8 # containing $body$ on it, $body$ then gets deleted.
   9 # Also the template should contain an $article-title$, $article-date$ and
  10 # $pagetitle$
  11 
  12 # The article title is considered to be the first h1 header found
  13 # in the markdown file
  14 
  15 div_article_title_w_logo() {
  16     logo_src=$(echo $1 | grep -zoP '(?<=src=\")(.*?)(?=\")' | tr -d '\0')
  17     logo_alt=$(echo $1 | grep -zoP '(?<=alt=\")(.*?)(?=\")' | tr -d '\0')
  18     logo_title=$(echo $1 | grep -zoP '(?<=title=\")(.*?)(?=\")' | tr -d '\0')
  19     h1_title=$(echo $2 | grep -zoP '(?<=<h1 id=article-title>)(.*?)(?=</h1>)' |\
  20         tr -d '\0')
  21 }
  22 
  23 usage() {
  24     echo "usage: $0 -i <input_file> -t <template_file>"
  25 }
  26 
  27 missing_operand() {
  28     echo "$0: missing operands"
  29     usage
  30 }
  31 
  32 check_opt() {
  33     local opt OPTIND
  34     while getopts ":i:t:d:" opt; do
  35         case $opt in
  36             i) input="$OPTARG";;
  37             t) templ="$OPTARG";;
  38             d) dest_dir="$OPTARG";;
  39             \?) printf "%s\n\n" "error: flag not found" && usage && exit 1;;
  40         esac
  41     done
  42 
  43     [ $OPTIND -eq 1 ] && missing_operand && exit 2
  44     shift "$((OPTIND-1))"
  45 
  46     [ -z "$input" ] || [ ! -e "$input" ] &&\
  47         echo "error: no input file" && exit 1
  48     [ -z "$templ" ] || [ ! -e "$templ" ] &&\
  49         echo "error: no template fshellile" && exit 1
  50     [ -z "$dest_dir" ] && dest_dir="."
  51 }
  52 
  53 check_opt $@
  54 
  55 # deprecated format
  56 # title=$(cat $input | head -n 3 | grep -oP '(?<=% title: \")(.*?)(?=\")')
  57 # date=$(cat $input | head -n 3 | grep -oP '(?<=% date: \")(.*?)(?=\")')
  58 
  59 title=$(cat $input | sed '/^%%/,/^%%/!d' | grep -oP '(?<=title: \")(.*?)(?=\")')
  60 date=$(cat $input | sed '/^%%/,/^%%/!d' | grep -oP '(?<=date: \")(.*?)(?=\")')
  61 pagetitle="Martin Klöckner's Webpage"
  62 lang="en"
  63 generator="Shell script"
  64 template="$templ"
  65 filename="$(basename $input | sed 's/\.[^.]*$//')"
  66 # last_update="$(date -r $input '+%d-%b-%Y')"
  67 last_update="$(LC_TIME=C git --no-pager log -n 1 --date=format:'%d-%b-%Y' --pretty=format:%cd $input)"
  68 
  69 mkdir -p $dest_dir &> /dev/null
  70 
  71 echo "title: $title"
  72 echo "date: $date"
  73 
  74 [ -z "$title" ] || [ -z "$date" ] \
  75     && echo "error: no metadata found on file $input" && exit 1
  76 
  77 # generate body (skips lines starting with `%`, they're considered metadata)
  78 # sed '/^% /d' $input | \ 
  79 # lowdown --html-no-head-ids --html-no-escapehtml --html-no-owasp > body.html
  80 # sed '/^%%/,/^%%/'
  81 sed '/^%%/,/^%%/d' $input |\
  82     lowdown --html-no-head-ids --parse-math\
  83         --html-no-skiphtml --html-no-escapehtml \
  84         --html-no-owasp > body.html
  85 
  86 # puts id to <h1> tag and adds paragraph next to it with the article-date
  87 echo "last update: \"$last_update\""
  88 if [ -n "$last_update" ]; then
  89     last_update=" (last update $last_update)"
  90 else
  91     last_update=""
  92 fi
  93 
  94 sed -i -e 's/<h1>/<h1 id=article-title>/g' \
  95     -e "s/<\/h1>/<\/h1><p class=\"article-date\">$date$last_update<\/p>/"\
  96     body.html
  97 
  98 sed -e "s/\$article-title\\$/$title/" -e "s/\$article-date\\$/$date/" \
  99     -e "s/\$pagetitle\\$/$pagetitle/" -e '/\$body\$/r./body.html' \
 100     -e "s/\$lang\\$/$lang/" -e "s/\$generator\\$/$generator/" \
 101     -e '/\$body\$/d' $template > "$dest_dir"/"$filename".html
 102 
 103 logo_line=$(grep -zoP '<img.*?("article-icon").*?>' "$dest_dir"/"$filename".html | tr -d '\0')
 104 title_line=$(grep -P '<h1.*?(article-title).*?>' "$dest_dir"/"$filename".html | tr -d '\0')
 105 
 106 insert_div_article_title_w_logo() {
 107     logo_line="$1"
 108     title_line="$2"
 109 
 110     div_article_title_w_logo "$logo_line" "$title_line"
 111 
 112     sed -i -e "s^$title_line^\
 113 \    <div id=\"article-title-with-icon\">\
 114 \    <div id=\"article-icon\">\
 115 \    <img src=\"$logo_src\" title=\"$logo_title\" alt=\"$logo_alt\">\
 116 \    <\/div>\
 117 \    <h1 id=\"article-title\">$h1_title<\/h1>\
 118 \    <\/div>\
 119 \    <p class=\"article-date\">$date (last update $last_update)</p>^"\
 120     "$dest_dir"/"$filename".html
 121 
 122     sed -i -E '/(^<p>).*?(article-icon).*?<\/p>/d' "$dest_dir"/"$filename".html
 123 }
 124 
 125 [ ! -z "$logo_line" ] && \
 126     insert_div_article_title_w_logo "$logo_line" "$title_line"
 127 
 128 rm -v body.html &> /dev/null
 129 
 130 ./scripts/syntax-highlight "$dest_dir"/"$filename".html > tmp.html
 131 
 132 cp -v ./favicon.webp "$dest_dir"/
 133 
 134 mv -v tmp.html "$dest_dir"/index.html
 135 
 136 echo "==> "$filename".html generated succesfully"
 137 echo ""
repos/kloeckner.com.ar
