From ce1ebb3ad3f705a1a8e3764e6c18f1af12eed795 Mon Sep 17 00:00:00 2001
From: Joe Carstairs <me@joeac.net>
Date: Tue, 9 Jun 2026 21:29:10 +0100
Subject: [PATCH] extracts longlog metadata including updated date

---
 http/Makefile                          |  2 +-
 http/bin/blog                          |  5 +++-
 http/bin/extract_longlog_meta          | 34 ++++++++++++++++++++++++++
 http/share/layouts/blog.layout.upphtml | 21 +++++++++++++++-
 4 files changed, 59 insertions(+), 3 deletions(-)
 create mode 100755 http/bin/extract_longlog_meta

diff --git a/http/Makefile b/http/Makefile
index fd865b5..1656817 100644
--- a/http/Makefile
+++ b/http/Makefile
@@ -11,7 +11,7 @@ src/microlog: $(shell find -L blogs/microlog -type f) bin/blog
 blog: src/blog
 
 src/blog: $(shell find -L blogs/blog -type f) bin/blog
-	./bin/blog -i blog -l blog -p 'cut_longlog_meta | gmi2upphtml'
+	./bin/blog -i blog -l blog -p 'cut_longlog_meta | gmi2upphtml' -a extract_longlog_meta
 
 .PHONY: clean
 clean:
diff --git a/http/bin/blog b/http/bin/blog
index 49bef7f..7038e4a 100755
--- a/http/bin/blog
+++ b/http/bin/blog
@@ -37,9 +37,12 @@ layout="default"
 postprocess_cmd="echo"
 use_filenames_for_titles=0
 
-while getopts "i:l:p:t" opt
+while getopts "a:i:l:p:t" opt
 do
   case $opt in
+    a)
+      extract_args_cmd="$OPTARG"
+      ;;
     i)
       log_name="$OPTARG"
       ;;
diff --git a/http/bin/extract_longlog_meta b/http/bin/extract_longlog_meta
new file mode 100755
index 0000000..054c994
--- /dev/null
+++ b/http/bin/extract_longlog_meta
@@ -0,0 +1,34 @@
+#!/bin/sh -e
+
+POST_TITLE="${POST_TITLE:-}"
+DATE_PUBLISHED=""
+DATE_UPDATED=""
+
+while read line
+do
+  if [ "$(echo "$line" | cut -c1-2)" = "# " ]
+  then
+    POST_TITLE="$(echo "$line" | cut -c3-)"
+  elif [ "$(echo "$line" | cut -c1-14)" = "Published on: " ]
+  then
+    DATE_PUBLISHED="$(date --date="$(echo "$line" | cut -c15-)" +%Y-%m-%d)"
+  elif [ "$(echo "$line" | cut -c1-12)" = "Updated on: " ]
+  then
+    DATE_UPDATED="$(date --date="$(echo "$line" | cut -c13-)" +%Y-%m-%d)"
+  fi
+done
+
+if [ -n "$POST_TITLE" ]
+then
+  echo "POST_TITLE=\"${POST_TITLE}\""
+fi
+
+if [ -n "$DATE_PUBLISHED" ]
+then
+  echo "DATE_PUBLISHED=\"${DATE_PUBLISHED}\""
+fi
+
+if [ -n "$DATE_UPDATED" ]
+then
+  echo "DATE_UPDATED=\"${DATE_UPDATED}\""
+fi
diff --git a/http/share/layouts/blog.layout.upphtml b/http/share/layouts/blog.layout.upphtml
index 928733f..804c6d9 100644
--- a/http/share/layouts/blog.layout.upphtml
+++ b/http/share/layouts/blog.layout.upphtml
@@ -1,7 +1,7 @@
 #!
 SRC="$1"
 SITE_URL="$2"
-DATE_PUBLISHED="$(basename "${SRC}" | cut -c1-10)"
+DATE_PUBLISHED="${DATE_PUBLISHED:-$(basename "${SRC}" | cut -c1-10)}"
 CANONICAL_URL="${SITE_URL}/blog/$(basename "${SRC}")"
 #!
 
@@ -24,11 +24,30 @@ pp "${SHARE}"/components/navbar.upphtml
 
 <aside>
 <span>This is a blog post by <a class='p-author h-card' href='/'>Joe Carstairs</a>.</span>
+#!
+if [ -z "${DATE_UPDATED}" ]; then
+#!
 <span>Published:
 #!
 DATE="${DATE_PUBLISHED}" CLASS="dt-published" pp "${SHARE}/components/formatted_date.upphtml"
 #!
 .</span>
+#!
+else
+#!
+<span>Updated:
+#!
+DATE="${DATE_UPDATED}" CLASS="dt-updated" pp "${SHARE}/components/formatted_date.upphtml"
+#!
+.</span>
+<span>Originally published:
+#!
+DATE="${DATE_PUBLISHED}" CLASS="dt-published" pp "${SHARE}/components/formatted_date.upphtml"
+#!
+.</span>
+#!
+fi
+#!
 <span hidden><a class='u-url uid' href='${CANONICAL_URL}'>Permalink</a></span>
 </aside>