From 601e1b2bb8138a3f71ca860c14d334e930ae4cbe Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fischer@muhq.space>
Date: Fri, 15 Sep 2023 14:19:12 +0200
Subject: build pptx from slides.pdf

---
 .gitignore          | 1 +
 common.mk           | 6 ++++++
 scripts/lesson-make | 2 +-
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index d8ce0e8b..94d7f515 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 schedule.pdf
 map.pdf
 slides.pdf
+slides.pptx
 handout.pdf
 sequence.pdf
 *_printout.pdf
diff --git a/common.mk b/common.mk
index 3654c74f..1e281e6d 100644
--- a/common.mk
+++ b/common.mk
@@ -18,6 +18,8 @@ SLIDES_OPTIONS := --slide-level 2 -t beamer --pdf-engine-opt=--shell-escape
 
 RUBBER_OPTS := --into .build -m lualatex:pdf --shell-escape -I "$(LATEX_BASE)"
 
+PDF2PPTX := pdf2pptx
+
 VERBOSE ?= @
 ifeq ($(VERBOSE), @)
 	RUBBER_OPTS += --quiet
@@ -35,6 +37,10 @@ slides%.pdf: slides%.md $(wildcard slides.md) $(wildcard img/*) $(MAKEFILE_LIST)
 	@echo "building $@"
 	$(VERBOSE)$(PANDOC) $(SLIDES_OPTIONS) $< -o $@
 
+slides.pptx: slides.pdf $(MAKEFILE_LIST)
+	@echo "building $@"
+	$(VERBOSE)$(PDF2PPTX) $<
+
 %.pdf: %.md $(MAKEFILE_LIST)
 	@echo "building $@"
 	$(VERBOSE)$(PANDOC) -f markdown $< -o $@
diff --git a/scripts/lesson-make b/scripts/lesson-make
index d45f3ac8..7db37eee 100755
--- a/scripts/lesson-make
+++ b/scripts/lesson-make
@@ -7,6 +7,6 @@ done
 FIND="find . -maxdepth 1 '(' -name '*.md' -o -name '*.tex' ')' -a -not -name 'Aufgabe[0-9].tex' -a -not -name '_*'"
 
 if [[ -f "${MAKEFILE}" ]]; then
-	exec make -f "${MAKEFILE}" "$@" $(eval "${FIND}" | sed 's/\.tex$/.pdf/g' | sed 's/\.md$/.pdf/g')
+	exec make -f "${MAKEFILE}" "$@" $(eval "${FIND}" | sed -e 's/\.tex$/.pdf/g' -e 's/\.md$/.pdf/g' -e 's/slides.pdf/slides.pdf slides.pptx/')
 fi
 
-- 
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