mirror of
https://github.com/bol-van/zapret.git
synced 2024-11-26 20:20:53 +03:00
169 lines
2.7 KiB
Bash
169 lines
2.7 KiB
Bash
exists()
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{
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which "$1" >/dev/null 2>/dev/null
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}
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existf()
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{
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type "$1" >/dev/null 2>/dev/null
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}
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whichq()
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{
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which $1 2>/dev/null
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}
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exist_all()
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{
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while [ -n "$1" ]; do
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exists "$1" || return 1
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shift
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done
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return 0
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}
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on_off_function()
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{
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# $1 : function name on
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# $2 : function name off
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# $3 : 0 - off, 1 - on
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local F="$1"
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[ "$3" = "1" ] || F="$2"
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shift
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shift
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shift
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"$F" "$@"
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}
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contains()
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{
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# check if substring $2 contains in $1
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[ "${1#*$2}" != "$1" ]
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}
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find_str_in_list()
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{
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[ -n "$1" ] && {
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for v in $2; do
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[ "$v" = "$1" ] && return 0
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done
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}
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return 1
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}
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end_with_newline()
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{
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local c=$(tail -c 1)
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[ "$c" = "" ]
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}
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append_separator_list()
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{
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# $1 - var name to receive result
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# $2 - separator
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# $3 - quoter
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# $4,$5,... - elements
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local _var="$1" sep="$2" quo="$3" i
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eval i="\$$_var"
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shift; shift; shift
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while [ -n "$1" ]; do
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if [ -n "$i" ] ; then
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i="$i$sep$quo$1$quo"
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else
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i="$quo$1$quo"
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fi
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shift
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done
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eval $_var="\$i"
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}
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make_separator_list()
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{
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eval $1=''
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append_separator_list "$@"
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}
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make_comma_list()
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{
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# $1 - var name to receive result
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# $2,$3,... - elements
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local var="$1"
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shift
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make_separator_list $var , '' "$@"
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}
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unique()
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{
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local i
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for i in "$@"; do echo $i; done | sort -u | xargs
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}
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is_linked_to_busybox()
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{
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local IFS F P
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IFS=:
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for path in $PATH; do
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F=$path/$1
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P="$(readlink $F)"
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if [ -z "$P" ] && [ -x $F ] && [ ! -L $F ]; then return 1; fi
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[ "${P%busybox*}" != "$P" ] && return
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done
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}
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get_dir_inode()
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{
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local dir="$1"
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[ -L "$dir" ] && dir=$(readlink "$dir")
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ls -id "$dir" | awk '{print $1}'
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}
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linux_min_version()
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{
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# $1 - major ver
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# $2 - minor ver
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local V1=$(sed -nre 's/^Linux version ([0-9]+)\.[0-9]+.*$/\1/p' /proc/version)
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local V2=$(sed -nre 's/^Linux version [0-9]+\.([0-9]+).*$/\1/p' /proc/version)
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[ -n "$V1" -a -n "$V2" ] && [ "$V1" -gt "$1" -o "$V1" -eq "$1" -a "$V2" -ge "$2" ]
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}
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linux_get_subsys()
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{
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local INIT=$(sed 's/\x0/\n/g' /proc/1/cmdline | head -n 1)
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[ -L "$INIT" ] && INIT=$(readlink "$INIT")
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INIT=$(basename "$INIT")
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if [ -f "/etc/openwrt_release" ] && [ "$INIT" = "procd" ] ; then
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SUBSYS=openwrt
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else
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# generic linux
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SUBSYS=
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fi
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}
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openwrt_fw3()
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{
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[ ! -x /sbin/fw4 -a -x /sbin/fw3 ]
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}
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openwrt_fw4()
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{
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[ -x /sbin/fw4 ]
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}
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openwrt_fw3_integration()
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{
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[ "$FWTYPE" = iptables ] && openwrt_fw3
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}
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create_dev_stdin()
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{
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[ -e /dev/stdin ] || ln -s /proc/self/fd/0 /dev/stdin
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}
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call_for_multiple_items()
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{
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# $1 - function to get an item
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# $2 - variable name to put result into
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# $3 - space separated parameters to function $1
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local i item items
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for i in $3; do
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$1 item $i
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[ -n "$item" ] && {
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if [ -n "$items" ]; then
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items="$items $item"
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else
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items="$item"
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fi
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}
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done
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eval $2=\"$items\"
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}
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