Parse site title from top-level README

Maybe not the best idea, since the dependency chain will trigger a
site-wide rebuild everytime the README is edited.  Ah well.

1 files changed, 10 insertions, 5 deletions

diff --git a/repo/www/Makefile b/repo/www/Makefile
index fb933c8..c236936 100644
--- a/repo/www/Makefile
+++ b/repo/www/Makefile
@@ -1,24 +1,27 @@
 TOP_DIR = ../..
 OUT_DIR = $(TOP_DIR)/public
 TEXT_FILES = md org
-# make does not care about unpaired single quotes (nor double quotes
-# for that matter) but Emacs does.  Shell out.
-TITLE = $(shell echo "peniblec's memleaks")
 
 dirname = $(patsubst %/,%,$(dir $(1)))
 dirnames = $(sort $(call dirname,$(1)))
 
 text_patterns = $(foreach ext,$(TEXT_FILES),'$(TOP_DIR)/**.$(ext)')
 text_folders = $(call dirnames,$(shell git ls-files $(text_patterns)))
+top_readme = $(shell git ls-files $(addprefix $(TOP_DIR)/README.,$(TEXT_FILES)))
 
 all: site
 
 cache = .cache
+# Site title, parsed from the top-level README.
+title = $(cache)/title
 # Maps folders to their contents (files and subfolders).
 site_tree = $(cache)/site-tree.json
 # Defines $(pages) and $(indices).
 dependencies = $(cache)/deps.mk
 
+$(title): $(top_readme) | $(cache)
+	pandoc --lua-filter print-title.lua $< > $@
+
 $(site_tree): $(text_folders) | $(cache)
 	./generate-tree.py -o $@ $(TEXT_FILES)
 
@@ -37,13 +40,15 @@ html_folders = $(call dirnames,$(pages) $(indices))
 $(html_folders) $(cache):
 	mkdir -p $@
 
+$(pages) $(indices): $(title)
+
 $(pages): $(OUT_DIR)/%.html:
-	pandoc -s $< -o $@ -T "$(TITLE)" -M title="$*"
+	pandoc -s $< -o $@ -T "$$(cat $(title))" -M title="$*"
 
 # ⚠ When tweaking this rule, check whether it still works for the
 #   top-level index.html.
 $(indices): $(OUT_DIR)/%index.html:
-	./generate-index.py $(site_tree) "$(TITLE)" "$(patsubst %/,%,$*)" $@
+	./generate-index.py $(site_tree) "$$(cat $(title))" "$(patsubst %/,%,$*)" $@
 
 clean:
 	-rm $(dependencies)