Amélioration de la génération de PDF

- Mise à jour automatique du nombre de pages dans le CSS
- Intégration des bookmarks dans le PDF final

Makefile

@@ -20,13 +20,19 @@ help:
 	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
 
 # Default make weasyprint target has a bug so we have to call it manually on the generated index.html file
+# Then we execute count_pdf_pages.py that will count the number of pages, and update print-theme.css
+# Then we generate index.pdf again (with the correct number of pages in the footer)
 # After that, extract table of content data from the pdf and generate a .tex file
 # Then generate a toc.pdf from the .tex file
 # And put them together in a .pdf file
+# Finally, we generate the final PDF by adding the bookmarks (for easier navigation in the PDF)
 # After all, clean up
 pdf: weasyprint
+	weasyprint build/weasyprint/index.html build/weasyprint/index.pdf -s source/css/print-theme.css
+	python3 sphinx-tools/count_pdf_pages.py
 	weasyprint build/weasyprint/index.html build/weasyprint/index.pdf -s source/css/print-theme.css
 	./pdftoc-to-latex build/weasyprint/index.pdf > build/weasyprint/toc.tex
 	- pdflatex -interaction nonstopmode -output-directory=build/weasyprint build/weasyprint/toc.tex
-	pdftk A=build/weasyprint/index.pdf B=build/weasyprint/toc.pdf cat A1 B A2-end output build/weasyprint/vheliotech.pdf
-	rm build/weasyprint/index.pdf build/weasyprint/toc.tex build/weasyprint/toc.pdf build/weasyprint/GuidedemontageVheliotech.pdf
+	pdftk A=build/weasyprint/index.pdf B=build/weasyprint/toc.pdf cat A1 B A2-end output build/weasyprint/vheliotech-without-bookmarks.pdf
+	python3 sphinx-tools/update_pdf_bookmarks.py build/weasyprint/index.pdf build/weasyprint/vheliotech-without-bookmarks.pdf build/weasyprint/vheliotech.pdf
+	#rm build/weasyprint/index.pdf build/weasyprint/toc.tex build/weasyprint/toc.pdf build/weasyprint/GuidedemontageVheliotech.pdf

sphinx-tools/count_pdf_pages.py

@@ -0,0 +1,24 @@
+import subprocess
+import re
+
+pdf_filename = 'build/weasyprint/index.pdf'
+css_filename = 'source/css/print-theme.css'
+additional_pages = 2
+
+# count pages in index.pdf
+pdfinfo = subprocess.run(['pdfinfo', pdf_filename], stdout=subprocess.PIPE)
+pages_match = re.search('\\nPages:\s+([0-9]+)\\n', pdfinfo.stdout.decode())
+num_pages = int(pages_match.group(1))
+print('index.pdf: ' + str(num_pages) + ' pages')
+
+num_pages = num_pages + additional_pages # account for table of content that will be added later
+
+# update the CSS file with the correct number of pages
+
+with open(css_filename) as css_file:
+	css = css_file.read()
+
+css = re.sub('content: counter\(page\) "/[0-9]+";', 'content: counter(page) "/'+str(num_pages)+'";', css)
+
+with open(css_filename, 'w') as css_file:
+	css_file.write(css)

sphinx-tools/update_pdf_bookmarks.py

@@ -0,0 +1,28 @@
+import sys
+import subprocess
+import re
+
+extract_bookmarks_from = sys.argv[1]
+source_pdf_filename = sys.argv[2]
+output_filename = sys.argv[3]
+
+bookmarks_filename = extract_bookmarks_from.replace('.pdf', '.txt')
+assert(bookmarks_filename != extract_bookmarks_from)
+
+# extract PDF metadata into a text file
+subprocess.run(['pdftk', extract_bookmarks_from, 'dump_data', 'output', bookmarks_filename])
+
+with open(bookmarks_filename) as bookmarks_file:
+	metadata = bookmarks_file.read()
+
+# Offset page numbers
+def replaceBookmarkPageNumber(match):
+	initial_page = int(match.group(1))
+	return 'BookmarkPageNumber: ' + str(initial_page + 2)
+metadata = re.sub('BookmarkPageNumber:\s+([0-9]+)', replaceBookmarkPageNumber, metadata)
+
+with open(bookmarks_filename, 'w') as bookmarks_file:
+	 bookmarks_file.write(metadata)
+
+# generate the output PDF
+subprocess.run(['pdftk', source_pdf_filename, 'update_info', bookmarks_filename, 'output', output_filename])