117 lines
3.2 KiB
Markdown
117 lines
3.2 KiB
Markdown
# pdf2book
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CLI script to rearrange pdf pages for printing book signatures and foldable zines
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## Install pdf2book in Linux or macOS
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### Dependencies:
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- [`bash`](https://www.gnu.org/software/bash/) (mostly already installed)
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- check with `bash --version`
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- [`python3`](https://www.python.org/downloads/) (mostly already installed)
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- check with `python3 --version`
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- [`venv`](https://docs.python.org/3/library/venv.html) (might be installed)
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- check with `python3 -m venv --help`
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### Installation script
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use the installation script
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```bash
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# create temporary directory
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TMPDIR=$(mktemp -d)
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# change into temporary dir
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pushd $TMPDIR
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# clone pdf2book source code
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git clone https://git.wlankabel.at/onipa/pdf2book.git
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# change into pdf2book directory
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pushd pdf2book
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# show help message of install script
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bash install.sh -h
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# execute interactive install script
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bash install.sh
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# change to previous folder
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popd
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popd
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# remove temporary folder
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rm -rf $TMPDIR
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```
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### install manually
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```bash
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#!/bin/bash
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PREFIX="$HOME/.local"
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LIBDIR=$PREFIX/lib
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BINDIR=$PREFIX/bin
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SRCDIR=$LIBDIR/pdf2book.git
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mkdir -p $LIBDIR $BINDIR
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git clone https://git.wlankabel.at/onipa/pdf2book.git $SRCDIR
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python3 -m venv $SRCDIR/.venv
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. $SRCDIR/.venv/bin/activate
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pip3 install pypdf
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echo -n '''#!/bin/bash
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SRCDIR='$SRCDIR'
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VENVDIR=$SRCDIR/.venv
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. $VENVDIR/bin/activate
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python3 $SRCDIR/pdf2book.py $@
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deactivate
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'''> $BINDIR/pdf2book
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chmod +x $BINDIR/pdf2book
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echo "you might need to restart your shell"
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```
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---
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## pdf2book.py
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This script takes a pdf and reorders pages for printing simple signatures.
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One sheets holds 4 pages. The number of sheets per signature can be varied.
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In the following code snippet the original sequence of pages on a sheet and
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its changed sequence are shown.
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```
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this is how the squence is changed in a 1 sheet per signature setting
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._________. ._________. ._________. ._________.
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| | | | | | | | | | | |
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| 1 | 2 | + | 3 | 4 | -> | 4 | 1 | + | 2 | 3 |
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| | | | | | | | | | | |
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'---------' '---------' '---------' '---------'
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# 1 sheet per signature
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s=1: 1,2,3,4 -> 04,01.02,03 i=0
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08,05.06,07 i=1
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12,09.10,11 i=2
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16,13.14,15 i=3
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20,17.18,19 i=4
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down=(i+1)*4*s
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up= (i)*4*s+1
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#pages_mod=$(python -c " (int(pages/s)+1)*(pages%s) " )
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for i in $(pages%s)
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print (down--,up++,up++,down--)
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# 2 sheets per signature
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s=2: 1,2,3,4,5,6,7,8 -> 08,01.02,07 06,03.04,05 i=0
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16,09.10,15 14,11.12,13 i=1
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24,17.18,23 22,19.20.21 i=2
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down=(i+1)*4*s
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up= (i)*4*s+1
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for i in range(pages%s):
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for count in range(2):
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print (down--,up++,up++,down--)
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# 3 sheets per signature
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s=3: 1,2,3,4,5,6,7,8,9,10,11,12 -> 12,01.02,11 10,03.04,09 08,05.06,07
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24,13.14,23 22,15.16,21 20,17.18,19
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# 4 sheets per signature
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s=4: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 -> 16,01.02,15 14,03.04,13 12,05.06,11 10,07.08,09
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32,17,18,31 30,19.20.29 28,21.22.27 26,23.24,25
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```
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---
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### TODO
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- [ ] alternative names to pdf2book
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- [ ] write install script
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- [ ] test in powershell
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