updated nix-shell and link to mkrss.sh
This commit is contained in:
Yann Esposito (Yogsototh)
parent
277358c2b5
commit
85de18b02b
GPG key ID:
7B19A4C650D59646
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@ -1,5 +1,5 @@
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# { pkgs ? import <nixpkgs> {} }:
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{ pkgs ? import (fetchTarball https://github.com/NixOS/nixpkgs/archive/19.09-beta.tar.gz) {} }:
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pkgs.mkShell {
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buildInputs = [ pkgs.html-xml-utils ];
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buildInputs = [ pkgs.coreutils pkgs.html-xml-utils pkgs.zsh ];
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}
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@ -111,8 +111,9 @@ dates=( )
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# named ${d}-$(basename $fic).rss that naming convention will be useful to
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# sort article by date
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for fic in $postsdir/**/*.html; do
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blogfile="$(echo "$fic"|sed 's#^'$postsdir'/##')"
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printf "%-30s" $blogfile
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postfile="$(echo "$fic"|sed 's#^'$postsdir'/##')"
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blogfile="$(echo "$fic"|sed 's#^'$webdir'/##')"
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printf "%-30s" $postfile
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xfic="$tmpdir/$fic.xml"
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mkdir -p $(dirname $xfic)
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hxclean $fic > $xfic # create a cleaner HTML file to help hxselect work
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@ -202,140 +203,34 @@ echo "RSS Generated"
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Here is the full script I use:
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[[file:rss-gen/mkrss.sh][mkrss.sh]]
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You can notice I start my script with:
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#+begin_src bash
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#!/usr/bin/env nix-shell
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#!nix-shell -i zsh
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# Directory
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webdir="_site"
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postsdir="$webdir/posts"
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rssfile="$webdir/rss.xml"
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# maximal number of articles to put in the RSS file
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maxarticles=10
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# RSS Metas
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rsstitle="her.esy.fun"
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rssurl="https://her.esy.fun/rss.xml"
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websiteurl="https://her.esy.fun"
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rssdescription="her.esy.fun articles, mostly random personal thoughts"
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rsslang="en"
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rssauthor="yann@esposito.host (Yann Esposito)"
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rssimgtitle="yogsototh"
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rssimgurl="https://her.esy.fun/img/FlatAvatar.png"
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# HTML Accessors (similar to CSS accessors)
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dateaccessor='.article-date'
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contentaccessor='#content'
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# title and keyword shouldn't be changed
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titleaccessor='title'
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keywordsaccessor='meta[name=keywords]::attr(content)'
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formatdate() {
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# format the date for RSS
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local d=$1
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LC_TIME=en_US date --date $d +'%a, %d %b %Y %H:%M:%S %z'
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}
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finddate(){ < $1 hxselect -c $dateaccessor }
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findtitle(){ < $1 hxselect -c $titleaccessor }
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getcontent(){ < $1 hxselect $contentaccessor }
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findkeywords(){ < $1 hxselect -c $keywordsaccessor | sed 's/,//g' }
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mkcategories(){
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for keyword in $*; do
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printf "\\n<category>%s</category>" $keyword
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done
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}
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autoload -U colors && colors
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tmpdir=$(mktemp -d)
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typeset -a dates
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dates=( )
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for fic in $postsdir/**/*.html; do
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blogfile="$(echo "$fic"|sed 's#^'$postsdir'/##')"
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printf "%-30s" $blogfile
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xfic="$tmpdir/$fic.xml"
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mkdir -p $(dirname $xfic)
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hxclean $fic > $xfic
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d=$(finddate $xfic)
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echo -n " [$d]"
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rssdate=$(formatdate $d)
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title=$(findtitle $xfic)
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keywords=( $(findkeywords $xfic) )
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printf ": %-55s" "$title ($keywords)"
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categories=$(mkcategories $keywords)
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{ printf "\\n<item>"
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printf "\\n<title>%s</title>" "$title"
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printf "\\n<guid>%s</guid>" "${websiteurl}/${blogfile}"
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printf "\\n<pubDate>%s</pubDate>%s" "$rssdate"
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printf "%s" "$categories"
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printf "\\n<description><![CDATA[\\n%s\\n]]></description>" "$(getcontent "$xfic")"
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printf "\\n</item>\\n\\n"
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} >> "$tmpdir/${d}-$(basename $fic).rss"
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dates=( $d $dates )
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echo " [${fg[green]}OK${reset_color}]"
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done
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echo "Publishing"
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for fic in $(ls $tmpdir/*.rss | sort -r | head -n $maxarticles ); do
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echo "${fic:t}"
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cat $fic >> $tmpdir/rss
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done
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rssmaxdate=$(formatdate $(for d in $dates; do echo $d; done | sort -r | head -n 1))
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rssbuilddate=$(formatdate $(date))
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{
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cat <<END
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<?xml version="1.0" encoding="utf-8"?>
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<rss version="2.0"
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xmlns:content="http://purl.org/rss/1.0/modules/content/"
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xmlns:wfw="http://wellformedweb.org/CommentAPI/"
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xmlns:dc="http://purl.org/dc/elements/1.1/"
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xmlns:atom="http://www.w3.org/2005/Atom"
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xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
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xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
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xmlns:georss="http://www.georss.org/georss"
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xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
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xmlns:media="http://search.yahoo.com/mrss/"><channel>
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<title>${rsstitle}</title>
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<atom:link href="${rssurl}" rel="self" type="application/rss+xml" />
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<link>${websiteurl}</link>
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<description><![CDATA[${rssdescription}]]></description>
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<language>${rsslang}</language>
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<pubDate>${rssmaxdate}</pubDate>
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<lastBuildDate>$rssbuilddate</lastBuildDate>
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<generator>mkrss.sh</generator>
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<webMaster>${rssauthor}</webMaster>
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<image>
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<url>${rssimgurl}</url>
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<title>${rssimgtitle}</title>
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<link>${websiteurl}</link>
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</image>
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END
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cat $tmpdir/rss
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cat <<END
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</channel>
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</rss>
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END
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} > "$rssfile"
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rm -rf $tmpdir
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echo "RSS Generated"
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#+end_src
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The =nix-shell= bang pattern is a neat trick to have all the dependencies I
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need when running my script, I could have added zsh, but my main concern
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was about =html-xml-utils=.
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need when running my script.
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It takes care that =zsh=, =coreutils= and =html-xml-utils= are installed
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before running my script.
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For example my script uses =date= from GNU coreutils and not the =BSD= date
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from my OS, which makes the script more portable.
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Along my script I have a =shell.nix= file containing:
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#+begin_src nix
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{ pkgs ? import (fetchTarball https://github.com/NixOS/nixpkgs/archive/19.09-beta.tar.gz) {} }:
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pkgs.mkShell {
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buildInputs = [ pkgs.html-xml-utils ];
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buildInputs = [ pkgs.coreutils pkgs.html-xml-utils pkgs.zsh ];
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}
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#+end_src
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Mainly it /pins/ a package version and the list in =buildInputs= contains
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the packages to install locally.
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If you are not already using nix[fn:nix] you should really take a look.
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That =shell.nix= will work on Linux and MacOS.
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119
src/posts/rss-gen/mkrss.sh
Executable file
119
src/posts/rss-gen/mkrss.sh
Executable file
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@ -0,0 +1,119 @@
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#!/usr/bin/env nix-shell
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#!nix-shell -i zsh
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# Directory
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webdir="_site"
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postsdir="$webdir/posts"
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rssfile="$webdir/rss.xml"
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# maximal number of articles to put in the RSS file
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maxarticles=10
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# RSS Metas
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rsstitle="her.esy.fun"
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rssurl="https://her.esy.fun/rss.xml"
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websiteurl="https://her.esy.fun"
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rssdescription="her.esy.fun articles, mostly random personal thoughts"
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rsslang="en"
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rssauthor="yann@esposito.host (Yann Esposito)"
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rssimgtitle="yogsototh"
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rssimgurl="https://her.esy.fun/img/FlatAvatar.png"
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# HTML Accessors (similar to CSS accessors)
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dateaccessor='.article-date'
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contentaccessor='#content'
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# title and keyword shouldn't be changed
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titleaccessor='title'
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keywordsaccessor='meta[name=keywords]::attr(content)'
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formatdate() {
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# format the date for RSS
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local d=$1
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LC_TIME=en_US date --date $d +'%a, %d %b %Y %H:%M:%S %z'
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}
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finddate(){ < $1 hxselect -c $dateaccessor }
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findtitle(){ < $1 hxselect -c $titleaccessor }
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getcontent(){ < $1 hxselect $contentaccessor }
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findkeywords(){ < $1 hxselect -c $keywordsaccessor | sed 's/,//g' }
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mkcategories(){
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for keyword in $*; do
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printf "\\n<category>%s</category>" $keyword
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done
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}
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autoload -U colors && colors
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tmpdir=$(mktemp -d)
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typeset -a dates
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dates=( )
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for fic in $postsdir/**/*.html; do
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postfile="$(echo "$fic"|sed 's#^'$postsdir'/##')"
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blogfile="$(echo "$fic"|sed 's#^'$webdir'/##')"
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printf "%-30s" $postfile
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xfic="$tmpdir/$fic.xml"
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mkdir -p $(dirname $xfic)
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hxclean $fic > $xfic
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d=$(finddate $xfic)
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echo -n " [$d]"
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rssdate=$(formatdate $d)
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title=$(findtitle $xfic)
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keywords=( $(findkeywords $xfic) )
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printf ": %-55s" "$title ($keywords)"
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categories=$(mkcategories $keywords)
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{ printf "\\n<item>"
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printf "\\n<title>%s</title>" "$title"
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printf "\\n<guid>%s</guid>" "${websiteurl}/${blogfile}"
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printf "\\n<pubDate>%s</pubDate>%s" "$rssdate"
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printf "%s" "$categories"
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printf "\\n<description><![CDATA[\\n%s\\n]]></description>" "$(getcontent "$xfic")"
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printf "\\n</item>\\n\\n"
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} >> "$tmpdir/${d}-$(basename $fic).rss"
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dates=( $d $dates )
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echo " [${fg[green]}OK${reset_color}]"
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done
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echo "Publishing"
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for fic in $(ls $tmpdir/*.rss | sort -r | head -n $maxarticles ); do
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echo "${fic:t}"
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cat $fic >> $tmpdir/rss
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done
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rssmaxdate=$(formatdate $(for d in $dates; do echo $d; done | sort -r | head -n 1))
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rssbuilddate=$(formatdate $(date))
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{
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cat <<END
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<?xml version="1.0" encoding="utf-8"?>
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<rss version="2.0"
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xmlns:content="http://purl.org/rss/1.0/modules/content/"
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xmlns:wfw="http://wellformedweb.org/CommentAPI/"
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xmlns:dc="http://purl.org/dc/elements/1.1/"
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xmlns:atom="http://www.w3.org/2005/Atom"
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xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
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xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
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xmlns:georss="http://www.georss.org/georss"
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xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
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xmlns:media="http://search.yahoo.com/mrss/"><channel>
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<title>${rsstitle}</title>
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<atom:link href="${rssurl}" rel="self" type="application/rss+xml" />
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<link>${websiteurl}</link>
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<description><![CDATA[${rssdescription}]]></description>
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<language>${rsslang}</language>
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<pubDate>${rssmaxdate}</pubDate>
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<lastBuildDate>$rssbuilddate</lastBuildDate>
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<generator>mkrss.sh</generator>
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<webMaster>${rssauthor}</webMaster>
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<image>
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<url>${rssimgurl}</url>
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<title>${rssimgtitle}</title>
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<link>${websiteurl}</link>
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</image>
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END
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cat $tmpdir/rss
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cat <<END
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</channel>
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</rss>
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END
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} > "$rssfile"
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rm -rf $tmpdir
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echo "RSS Generated"
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