From 0892937941d401b1cd4fe041a1fa5eda9287a677 Mon Sep 17 00:00:00 2001
From: Joe Carstairs <me@joeac.net>
Date: Tue, 9 Jun 2026 18:19:16 +0100
Subject: [PATCH] parameterises postprocess cmd in blog script

---
 http/Makefile        |  4 ++--
 http/bin/blog        | 17 +++++++++++++----
 http/bin/gmi2upphtml |  2 +-
 3 files changed, 16 insertions(+), 7 deletions(-)
 mode change 100755 => 100644 http/bin/blog

diff --git a/http/Makefile b/http/Makefile
index eb8e440..3f20d3f 100644
--- a/http/Makefile
+++ b/http/Makefile
@@ -6,12 +6,12 @@ out: microlog blog $(shell find src -type f) $(shell find share -type f) $(shell
 microlog: src/microlog
 
 src/microlog: $(shell find -L blogs/microlog -type f) bin/blog
-	./bin/blog -i microlog -l microlog -t
+	./bin/blog -i microlog -l microlog -t -p gmi2upphtml
 
 blog: src/blog
 
 src/blog: $(shell find -L blogs/blog -type f) bin/blog
-	./bin/blog -i blog -l blog
+	./bin/blog -i blog -l blog -p gmi2upphtml
 
 .PHONY: clean
 clean:
diff --git a/http/bin/blog b/http/bin/blog
old mode 100755
new mode 100644
index a16a692..357b2bc
--- a/http/bin/blog
+++ b/http/bin/blog
@@ -7,7 +7,7 @@ export LAYOUTS="$(realpath share/layouts)"
 usage()
 {
   >&2 cat << USAGE
-usage: blog -i LOG [-l LAYOUT] [-t]
+usage: blog -i LOG [-p POSTPROCESS_CMD] [-l LAYOUT] [-t]
 
 options:
 
@@ -18,6 +18,10 @@ options:
         If provided, the layout under \$LAYOUTS to use for the generated
         upphtml files. If not provided, uses the default layout.
 
+    -p POSTPROCESS_CMD
+        If provided, a shell command to post-process the source files into
+        upphtml. The shell will be provided with a variable, POST_TITLE.
+
     -t
         If enabled, use filenames as post titles
 USAGE
@@ -25,9 +29,10 @@ USAGE
 
 log_name=""
 layout="default"
+postprocess_cmd="echo"
 use_filenames_for_titles=0
 
-while getopts "i:l:t" opt
+while getopts "i:l:p:t" opt
 do
   case $opt in
     i)
@@ -36,6 +41,9 @@ do
     l)
       layout_name="$OPTARG"
       ;;
+    p)
+      postprocess_cmd="$OPTARG"
+      ;;
     t)
       use_filenames_for_titles=1
       ;;
@@ -78,10 +86,11 @@ do
   if [ $use_filenames_for_titles -eq 1 ]
   then
     title="$name"
-    cat "$entry" | gmi2upphtml "$title" > "$dest"
+    cat "$entry" | POST_TITLE="$title" eval "$postprocess_cmd" > "$dest"
   else
     title="$(grep --regexp "^\# " --max-count 1 "$entry" | cut -c3-)"
-    cat "$entry" | grep --regexp "^\# " --invert-match | gmi2upphtml "$title" > "$dest"
+    export POST_TITLE="$title"
+    cat "$entry" | grep --regexp "^\# " --invert-match | eval "$postprocess_cmd" > "$dest"
   fi
   echo "${title}" > "${dest}.args"
   echo "Processed ${entry#$(dirname ${BLOGS})/} to ${dest#$(dirname ${SRC})/}"
diff --git a/http/bin/gmi2upphtml b/http/bin/gmi2upphtml
index 608f4e8..f19f447 100755
--- a/http/bin/gmi2upphtml
+++ b/http/bin/gmi2upphtml
@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-post_title="${1:-}"
+post_title="${POST_TITLE:-}"
 
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