Merge branch 'pdftk_shuffler' into 'master'

Use pdftk in zine_maker rather than pdfseparate

See merge request mara/zine_maker!1

shuffle_pdf.py

@@ -16,8 +16,15 @@ def shuffle_zine(finput, foutput):
     # set font for all text
     zine = Zine(orientation="P", unit="mm", format="A5")
     chapter_list = zine.shuffle_chapters(finput)
+
+    with open('chapters.txt', 'w') as chapt:
+        for i in chapter_list:
+            chapt.write(i)
+            chapt.write("\n")
+
     proc = subprocess.Popen(
         ["pdfunite"] + chapter_list + [foutput],
+#        ["pdftk"] + ["$(cat chapters.txt)", "cat", "output"] + [foutput],
         stdin=subprocess.PIPE,
         stdout=subprocess.PIPE,
         stderr=subprocess.PIPE

zine_maker.py

@@ -62,7 +62,7 @@ class Zine(FPDF):
         # TODO add 2 blank pages after the cover and colophon
         # check if we have an odd number of pages
         subprocess.run(
-            ["pdfseparate", "%s" % pdfinput, "./%02d_chapter.pdf"],
+            ["pdftk", "%s" % pdfinput, "burst", "output", "./%02d_chapter.pdf"],
             stdout=subprocess.PIPE, text=True)
         pages = glob.glob("./*_chapter.pdf")
         pages.sort()