1f958cfad7
These implementations of the bc and dc programs offer a number of advantages compared to the current implementations in the FreeBSD base system: - They do not depend on external large number functions (i.e. no dependency on OpenSSL or any other large number library) - They implements all features found in GNU bc/dc (with the exception of the forking of sub-processes, which the author of this version considers as a security issue). - They are significantly faster than the current code in base (more than 2 orders of magnitude in some of my tests, e.g. for 12345^100000). - They should be fully compatible with all features and the behavior of the current implementations in FreeBSD (not formally verified). - They support POSIX message catalogs and come with localized messages in Chinese, Dutch, English, French, German, Japanese, Polish, Portugueze, and Russian. - They offer very detailed man-pages that provide far more information than the current ones. Approved by: imp Obtained from: https://git.yzena.com/gavin/bc Differential Revision: https://reviews.freebsd.org/D19982
68 lines
1.0 KiB
Bash
Executable File
68 lines
1.0 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Written by Rich Felker, originally as part of musl libc.
|
|
# Multi-licensed under MIT, 0BSD, and CC0.
|
|
#
|
|
# This is an actually-safe install command which installs the new
|
|
# file atomically in the new location, rather than overwriting
|
|
# existing files.
|
|
#
|
|
|
|
usage() {
|
|
printf "usage: %s [-D] [-l] [-m mode] src dest\n" "$0" 1>&2
|
|
exit 1
|
|
}
|
|
|
|
mkdirp=
|
|
symlink=
|
|
mode=755
|
|
|
|
while getopts Dlm: name ; do
|
|
case "$name" in
|
|
D) mkdirp=yes ;;
|
|
l) symlink=yes ;;
|
|
m) mode=$OPTARG ;;
|
|
?) usage ;;
|
|
esac
|
|
done
|
|
shift $(($OPTIND - 1))
|
|
|
|
test "$#" -eq 2 || usage
|
|
src=$1
|
|
dst=$2
|
|
tmp="$dst.tmp.$$"
|
|
|
|
case "$dst" in
|
|
*/) printf "%s: %s ends in /\n", "$0" "$dst" 1>&2 ; exit 1 ;;
|
|
esac
|
|
|
|
set -C
|
|
set -e
|
|
|
|
if test "$mkdirp" ; then
|
|
umask 022
|
|
case "$2" in
|
|
*/*) mkdir -p "${dst%/*}" ;;
|
|
esac
|
|
fi
|
|
|
|
trap 'rm -f "$tmp"' EXIT INT QUIT TERM HUP
|
|
|
|
umask 077
|
|
|
|
if test "$symlink" ; then
|
|
ln -s "$1" "$tmp"
|
|
else
|
|
cat < "$1" > "$tmp"
|
|
chmod "$mode" "$tmp"
|
|
fi
|
|
|
|
mv -f "$tmp" "$2"
|
|
test -d "$2" && {
|
|
rm -f "$2/$tmp"
|
|
printf "%s: %s is a directory\n" "$0" "$dst" 1>&2
|
|
exit 1
|
|
}
|
|
|
|
exit 0
|