v--

import pathlib

import click
from pypdf import PdfReader, PdfWriter


class ScalePdfError(click.ClickException):
    pass

v--

v--

v--

v--

# This is a GNU Make file specifically designed for building PDF books from a directory of images.
# It can process multiple images concurrently with `make --jobs=8`.
#
# Every book is different and has different processing requirements,
# and it often makes sense copying this file and adapting it for an individual book.
# Adapting usually involves modifying in non-trivial ways the targets for the individual pages.
#
# The script builds a PDF file with a table of contents and an OCR layer.
# I used to build DjVu files instead because of their better image compression, but I learned that
# it's better to provide a PDF myself than to let people use bad converters.

v--

v--

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/+ dub.sdl:
    name "pointer_arithmetic"
+/

import std.traits : isPointer, PointerTarget;

template IndirectionCounter(T)
{
    static if (isPointer!T)
        enum IndirectionCounter = 1 + IndirectionCounter!(PointerTarget!T);