Optimize script for generating LinuxManBook.pdf

Alejandro Colomar
2023-11-22T14:59:05Z

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Hi Deri,

I've optimized from 18.5 s down to 16.3 s the script, by splitting the
pipeline with this wrapper (and slightly reducing the perl script to
just print the pages to stdout). BTW, now it can be run from any
directory. And every step can be debugged by just introducing
| tee /dev/tty \
wherever you want to debug. It's all pushed to master.

The PDF is now printed to stdout, to avoid hard-coding file names.

I still need to split a bit more and reduce the longest lines. How does
this script look to you?

Cheers,
Alex :-)

$ cat scripts/LinuxManBook/build_linux_man_book.sh
#!/bin/sh
# Copyright 2023, Alejandro Colomar <alx@kernel.org>
# SPDX-License-Identifier: GPL-3.0-or-later

(
"$(dirname "$0")"/prepare_linux_man_book.pl "$1" \
| groff -z -dPDF.EXPORT=1 -dLABEL.REFS=1 -dpaper=a4 -Tpdf -k -pet \
-M"$(dirname "$0")" -mandoc -manmark \
-F"$(dirname "$0")" -P-pa4 \-rC1 -rCHECKSTYLE=3 2>&1 \
| LC_ALL=C grep '^\. *ds ';

"$(dirname "$0")"/prepare_linux_man_book.pl "$1";
) \
| preconv \
| tbl \
| eqn -Tpdf \
| (
troff -Tpdf -ms <"$(dirname "$0")"/LMBfront.ms;
troff -Tpdf -M"$(dirname "$0")" -mandoc -manmark \
-F"$(dirname "$0")" -dpaper=a4;
) \
| gropdf -F"$(dirname "$0")" -pa4;