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

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