plomlompom.com Git - redo-blog/blob - processor/feed.xml.do

   1 #!/bin/sh
   2
   3 # Pull in global dependencies.
   4 . ./helpers.sh
   5 url_file=url.meta
   6 author_file=author.meta
   7 uuid_file=uuid.meta
   8 title_file=title.meta
   9 redo-ifchange "$url_file"
  10 redo-ifchange "$author_file"
  11 redo-ifchange "$uuid_file"
  12 redo-ifchange "$title_file"
  13
  14 # Build some variables. XML-escape even file contents that should not contain
  15 # dangerous characters, just to avoid any XML trouble.
  16 base_url=`cat "$url_file" | head -1`
  17 url_protocol=`echo $base_url | cut -d ':' -f 1`
  18 url_basepath=`echo $base_url | cut -d '/' -f 3-`
  19 url_basepath_escaped=`escape_url "$url_basepath"`
  20 basepath="$url_protocol""://""$url_basepath_escaped"
  21 title=`read_and_escape_file "$title_file" | head -1`
  22 author=`read_and_escape_file "$author_file" | head -1`
  23 uuid=`read_and_escape_file "$uuid_file" | head -1`
  24
  25 # Write majority of feed head.
  26 cat << EOF
  27 <?xml version="1.0" encoding="utf-8"?>
  28 <feed xmlns="http://www.w3.org/2005/Atom">
  29 EOF
  30 printf "<link href=\"%s\" />\n" "$basepath"
  31 printf "<link href=\"%sfeed.xml\" rel=\"self\" />\n" "$basepath"
  32 printf "<title type=\"html\">%s</title>\n" "$title"
  33 printf "<author><name>%s</name></author>\n" "$author"
  34 printf "<id>urn:uuid:%s</id>\n" "$uuid"
  35
  36 # Iterate through most recent entries (go by lastmod date of source files) to
  37 # build feed head "updated" element, and individual entries.
  38 # FIXME: This ls parsing is a bad way to loop through the sorted files. Besides,
  39 # $'\0' is a bashism.
  40 first_run=0
  41 files=`ls -1t *.rst *.md | head -10 | tr '\n' $'\0'`
  42 oldIFS="$IFS"
  43 IFS=$'\0'
  44 for file in $files; do
  45   lastmod=`stat -c%y "$file"`
  46   lastmod_rfc3339=`date -u "+%Y-%m-%dT%TZ" -d "$lastmod"`
  47   if [ "$first_run" -lt "1" ]; then
  48     IFS="$oldIFS"
  49     printf "<updated>%s</updated>\n\n" "$lastmod_rfc3339"
  50     first_run=1
  51   fi
  52
  53   # Build some variables and dependencies.
  54   intermediate_file="${file%.*}.intermediate"
  55   htmlfile=`escape_url "${file%.*}.html"`
  56   uuid_file="${file%.*}.uuid"
  57   redo-ifchange "$intermediate_file"
  58   redo-ifchange "$uuid_file"
  59   title=`read_and_escape_file "$intermediate_file" | head -1`
  60   uuid=`read_and_escape_file "$uuid_file" | head -1`
  61   body=`read_and_escape_file "$intermediate_file" | sed 1d`
  62   published=`stat -c%y "$uuid_file"`
  63   published_rfc3339=`date -u "+%Y-%m-%dT%TZ" -d "$published"`
  64
  65   # Write entry.
  66   printf "<entry>\n"
  67   printf "<title type=\"html\">%s</title>\n" "$title"
  68   printf "<id>urn:uuid:%s</id>\n" "$uuid"
  69   printf "<updated>%s</updated>\n" "$lastmod_rfc3339"
  70   printf "<published>%s</published>\n" "$published_rfc3339"
  71   printf "<link href=\"%s%s\" />\n" "$basepath" "$htmlfile"
  72   printf "<content type=\"html\">\n%s\n</content>\n" "$body"
  73   printf "</entry>\n\n"
  74 done
  75
  76 printf "</feed>"