useful scripts for layout

scripts/booklet-s16.sh

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+# Requirements: psutils, pdftk, python3 with reportlab (make_blank_pdf.py)
+input=$1
+base=${input%.*}
+echo converting $input to $base.booklet.pdf
+pdftk_utils.py $input pad --multiple 4 --output $base.01.pdf
+pdftops -paper match $base.01.pdf $base.01.ps
+psbook -s16 $base.01.ps $base.02.ps
+psnup -2 -PA4 $base.02.ps $base.03.ps
+ps2pdf $base.03.ps $base.booklet.pdf
+rm $base.01.pdf $base.01.ps $base.02.ps $base.03.ps

scripts/booklet.sh

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+# Requirements: psutils, pdftk, python3 with reportlab (make_blank_pdf.py)
+input=$1
+base=${input%.*}
+echo converting $input to $base.booklet.pdf
+pdftk_utils.py $input pad --multiple 4 --output $base.01.pdf
+pdftops -paper match $base.01.pdf $base.01.ps
+psbook -s`pdftk_utils.py $base.01.pdf count` $base.01.ps $base.02.ps
+psnup -2 -PA4 $base.02.ps $base.03.ps
+ps2pdf $base.03.ps $base.booklet.pdf
+rm $base.01.pdf $base.01.ps $base.02.ps $base.03.ps

scripts/make_blank_pdf.py

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+#!/usr/bin/env python3
+
+import argparse, sys
+from reportlab.pdfgen.canvas import Canvas
+from reportlab.lib.pagesizes import letter, A4
+from reportlab.lib.units import inch, cm
+# from reportlab.pdfbase.ttfonts import TTFont, pdfmetrics
+
+
+def make_blank_pdf (path, pages, size=A4):
+    c = Canvas(path, pagesize=size)
+    for i in range(pages):
+        c.setPageSize(size)
+        c.showPage()
+    c.save()
+    return True
+
+if __name__ == "__main__":
+    ap = argparse.ArgumentParser("")
+    ap.add_argument("output")
+    ap.add_argument("--number", "-n", type=int, default=1)
+    ap.add_argument("--size", default=None)
+    args = ap.parse_args()
+    size = A4
+    if args.size:
+        if args.size.lower() == "letter":
+            size = letter
+    make_blank_pdf(args.output, args.number, size)

scripts/pdftk_utils.py

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+#!/usr/bin/env python3
+import subprocess, re, shutil
+
+"""
+examples
+
+count pages
+
+    pdftk_utils.py test.pdf count
+
+pad pdf to a multiple of a given number of pages (uses make_blank_pdf.py/reportlab)
+
+    pdftk_utils.py test.pdf pad --multiple 4 --output padded.pdf
+
+"""
+
+def count_pages (path):
+    p = subprocess.Popen(["pdftk", path, "dump_data"], stderr=subprocess.STDOUT, stdout=subprocess.PIPE)
+    out, _ = p.communicate()
+    out = out.decode("utf-8")
+    m = re.search("^NumberOfPages: (\d+)", out, flags=re.M)
+    return int(m.group(1))
+
+
+def pad_to_multiple (path, multiple, output, alwaysOutput=True):
+    import make_blank_pdf, tempfile, os
+    n = count_pages(path)
+    cur_pages = n
+    while n % multiple != 0:
+        n += 1
+    pages_to_add = n - cur_pages
+    if pages_to_add > 0:
+        _, tmp = tempfile.mkstemp(".pdf")
+        make_blank_pdf.make_blank_pdf(tmp, pages_to_add)
+        # print ("pdftk A=\"{0}\" B=\"{1}\" cat A B output {2}".format(path, tmp, args.output))
+        p = subprocess.Popen(["pdftk", "A={0}".format(path), "B={0}".format(tmp), "cat", "A", "B", "output", args.output], stderr=subprocess.STDOUT, stdout=subprocess.PIPE)
+        out, _ = p.communicate()
+        out = out.decode("utf-8")
+        os.remove(tmp)
+        return output
+    elif alwaysOutput:
+        # in the event of no need for padding, simply copy the input file
+        shutil.copyfile(path, output)
+        return output
+
+if __name__ == "__main__":
+    import argparse
+    ap = argparse.ArgumentParser("")
+    ap.add_argument("path")
+    subparsers = ap.add_subparsers()
+    count = subparsers.add_parser("count")
+    count.set_defaults(func=count_pages)
+
+    pad = subparsers.add_parser("pad")
+    pad.add_argument("--multiple", type=int, default=None)
+    pad.add_argument("--output", default="padded.pdf")
+    pad.set_defaults(func=pad_to_multiple)
+
+    args = ap.parse_args()
+    oargs = dict(vars(args))
+    del oargs['func']
+    print (args.func(**oargs))