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|
#!/bin/sh
# SPDX-License-Identifier: GPL-3.0-or-later
#
# scripts/deps: install krino's optional content extractors with the host's
# system package manager, per docs/design.md §14.
#
# --print prints the exact command this script would run (and the reason,
# when one platform's package list differs from the others), then exits
# without running anything and without asking for privileges. `make deps`
# calls this script with no flag; plain `make`/`make build` never calls it
# at all, so plain `make` never asks for privileges (§14).
#
# Detection:
# - Debian family - /etc/os-release's ID *or* ID_LIKE names "debian" as
# one of its (possibly multi-word) values. Devuan is ID=devuan,
# ID_LIKE=debian: keying on ID=debian alone would leave it unrecognised.
# -> apt-get install poppler-utils catdoc antiword
# - FreeBSD (uname -s) -> pkg install poppler-utils antiword. catdoc is
# left out on purpose: it pulls in tcl/tk.
# - OpenBSD (uname -s) -> pkg_add poppler-utils catdoc antiword
# - anything else: print what is needed and exit non-zero. This script
# never guesses a package manager.
#
# Privileges: doas if present, else sudo; if neither exists (and we are not
# already root), the command is printed for the user to run as root
# themselves, rather than attempting it unprivileged and failing silently.
set -eu
print_only=0
case "${1:-}" in
--print) print_only=1 ;;
"") ;;
*)
echo "usage: $0 [--print]" >&2
exit 2
;;
esac
# is_debian_family: true if /etc/os-release's ID or ID_LIKE contains
# "debian" as one of its space-separated words.
is_debian_family() {
[ -r /etc/os-release ] || return 1
(
. /etc/os-release
for word in ${ID:-} ${ID_LIKE:-}; do
[ "$word" = "debian" ] && exit 0
done
exit 1
)
}
# privileged CMD...: CMD prefixed with doas or sudo, whichever is found
# first; unprefixed if we are already root or if neither exists (the
# caller decides what to do in that last case).
privileged() {
if [ "$(id -u)" = 0 ]; then
printf '%s\n' "$*"
elif command -v doas >/dev/null 2>&1; then
printf 'doas %s\n' "$*"
elif command -v sudo >/dev/null 2>&1; then
printf 'sudo %s\n' "$*"
else
printf '%s\n' "$*"
fi
}
note=""
if is_debian_family; then
pkgcmd="apt-get install poppler-utils catdoc antiword"
elif [ "$(uname -s)" = "FreeBSD" ]; then
pkgcmd="pkg install poppler-utils antiword"
note="catdoc left out on FreeBSD: it pulls in tcl/tk."
elif [ "$(uname -s)" = "OpenBSD" ]; then
pkgcmd="pkg_add poppler-utils catdoc antiword"
else
echo "krino's optional extractors: poppler-utils (pdftotext), catdoc, antiword" >&2
echo "no supported package manager detected (uname -s: $(uname -s), no debian-family /etc/os-release)" >&2
echo "install them yourself with whatever this system uses" >&2
exit 1
fi
cmd=$(privileged $pkgcmd)
[ -n "$note" ] && echo "$note" >&2
if [ "$print_only" = 1 ]; then
echo "$cmd"
exit 0
fi
if [ "$(id -u)" != 0 ] && ! command -v doas >/dev/null 2>&1 && ! command -v sudo >/dev/null 2>&1; then
echo "neither doas nor sudo found; run this yourself as root:" >&2
echo "$cmd" >&2
exit 1
fi
echo "$cmd"
exec $cmd
|
