Move work so far into repo.

[redo-blog] / feed.xml.do

diff --git a/feed.xml.do b/feed.xml.do
new file mode 100644 (file)
index 0000000..2cdb7b2
--- /dev/null
+++ b/feed.xml.do
@@ -0,0 +1,70 @@
+#!/bin/sh
+
+# Pull in global dependencies.
+. ./helpers.sh
+redo-ifchange url
+redo-ifchange author
+redo-ifchange uuid
+redo-ifchange title 
+
+# Build some variables. XML-escape even file contents that should not contain
+# dangerous characters, just to avoid any XML trouble.
+base_url=`cat url | head -1`
+url_protocol=`echo $base_url | cut -d ':' -f 1`
+url_basepath=`echo $base_url | cut -d '/' -f 3-`
+url_basepath_escaped=`escape_url "$url_basepath"`
+basepath="$url_protocol""://""$url_basepath_escaped"
+title=`read_and_escape_file title | head -1`
+author=`read_and_escape_file author | head -1`
+uuid=`read_and_escape_file uuid | head -1`
+
+# Write majority of feed head.
+cat << EOF
+<?xml version="1.0" encoding="utf-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom">
+EOF
+printf "<link href=\"%s\" />\n" "$basepath"
+printf "<link href=\"%sfeed.xml\" rel=\"self\" />\n" "$basepath"
+printf "<title type=\"html\">%s</title>\n" "$title"
+printf "<author><name>%s</name></author>\n" "$author"
+printf "<id>urn:uuid:%s</id>\n" "$uuid"
+
+# Iterate through most recent entries (go by lastmod date of source files) to
+# build feed head "updated" element, and individual entries.
+first_run=0
+files=`ls -1t *.rst *.md | head -10 | tr '\n' $'\0'`
+oldIFS="$IFS"
+IFS=$'\0'
+for file in $files; do
+  lastmod=`stat -c%y "$file"`
+  lastmod_rfc3339=`date -u "+%Y-%m-%dT%TZ" -d "$lastmod"`
+  if [ "$first_run" -lt "1" ]; then
+    IFS="$oldIFS"
+    printf "<updated>%s</updated>\n\n" "$lastmod_rfc3339" 
+    first_run=1
+  fi
+
+  # Build some variables and dependencies.
+  intermediate_file="${file%.*}.intermediate"
+  htmlfile=`escape_url "${file%.*}.html"`
+  redo-ifchange "$intermediate_file"
+  redo-ifchange "$uuidfile"
+  title=`read_and_escape_file "$intermediate_file" | head -1`
+  uuidfile="${file%.*}.uuid"
+  uuid=`read_and_escape_file "$uuidfile" | head -1`
+  body=`read_and_escape_file "$intermediate_file" | sed 1d`
+  published=`stat -c%y "$uuidfile"`
+  published_rfc3339=`date -u "+%Y-%m-%dT%TZ" -d "$published"`
+
+  # Write entry.
+  printf "<entry>\n"
+  printf "<title type=\"html\">%s</title>\n" "$title"
+  printf "<id>urn:uuid:%s</id>\n" "$uuid" 
+  printf "<updated>%s</updated>\n" "$lastmod_rfc3339" 
+  printf "<published>%s</published>\n" "$published_rfc3339" 
+  printf "<link href=\"%s%s\" />\n" "$basepath" "$htmlfile"
+  printf "<content type=\"html\">\n%s\n</content>\n" "$body"
+  printf "</entry>\n\n"
+done
+
+printf "</feed>"