bootconfig/scripts/xbc.sh

0001 #!/bin/sh
0002 # SPDX-License-Identifier: GPL-2.0-only
0003
0004 # bootconfig utility functions
0005
0006 XBC_TMPFILE=
0007 XBC_BASEDIR=`dirname $0`
0008 BOOTCONFIG=${BOOTCONFIG:=$XBC_BASEDIR/../bootconfig}
0009 if [ ! -x "$BOOTCONFIG" ]; then
0010         BOOTCONFIG=`which bootconfig`
0011         if [ -z "$BOOTCONFIG" ]; then
0012                 echo "Erorr: bootconfig command is not found" 1>&2
0013                 exit 1
0014         fi
0015 fi
0016
0017 xbc_cleanup() {
0018         if [ "$XBC_TMPFILE" ]; then
0019                 rm -f "$XBC_TMPFILE"
0020         fi
0021 }
0022
0023 xbc_init() { # bootconfig-file
0024         xbc_cleanup
0025         XBC_TMPFILE=`mktemp bconf-XXXX`
0026         trap xbc_cleanup EXIT TERM
0027
0028         $BOOTCONFIG -l $1 > $XBC_TMPFILE || exit 1
0029 }
0030
0031 nr_args() { # args
0032         echo $#
0033 }
0034
0035 xbc_get_val() { # key [maxnum]
0036         if [ "$2" ]; then
0037                 MAXOPT="-L $2"
0038         fi
0039         grep "^$1 =" $XBC_TMPFILE | cut -d= -f2- | \
0040                 sed -e 's/", /" /g' -e "s/',/' /g" | \
0041                 xargs $MAXOPT -n 1 echo
0042 }
0043
0044 xbc_has_key() { # key
0045         grep -q "^$1 =" $XBC_TMPFILE
0046 }
0047
0048 xbc_has_branch() { # prefix-key
0049         grep -q "^$1" $XBC_TMPFILE
0050 }
0051
0052 xbc_subkeys() { # prefix-key depth [subkey-pattern]
0053         __keys=`echo $1 | sed "s/\./ /g"`
0054         __s=`nr_args $__keys`
0055         grep "^$1$3" $XBC_TMPFILE | cut -d= -f1| cut -d. -f$((__s + 1))-$((__s + $2)) | uniq
0056 }