paul@5 | 1 | #!/bin/sh |
paul@5 | 2 | |
paul@5 | 3 | # Emit a partition summary for a device employing parameters such as the start, |
paul@5 | 4 | # size, and type. |
paul@15 | 5 | # |
paul@15 | 6 | # Copyright (C) 2019 Paul Boddie <paul@boddie.org.uk> |
paul@15 | 7 | # |
paul@15 | 8 | # This program is free software; you can redistribute it and/or modify it under |
paul@15 | 9 | # the terms of the GNU General Public License as published by the Free Software |
paul@15 | 10 | # Foundation; either version 3 of the License, or (at your option) any later |
paul@15 | 11 | # version. |
paul@15 | 12 | # |
paul@15 | 13 | # This program is distributed in the hope that it will be useful, but WITHOUT |
paul@15 | 14 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
paul@15 | 15 | # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
paul@15 | 16 | # details. |
paul@15 | 17 | # |
paul@15 | 18 | # You should have received a copy of the GNU General Public License along with |
paul@15 | 19 | # this program. If not, see <http://www.gnu.org/licenses/>. |
paul@5 | 20 | |
paul@5 | 21 | PROGNAME=`basename "$0"` |
paul@5 | 22 | THISDIR=`dirname "$0"` |
paul@5 | 23 | |
paul@5 | 24 | |
paul@5 | 25 | |
paul@5 | 26 | # Emit any partition details as a complete record. |
paul@5 | 27 | |
paul@5 | 28 | emit_partition() |
paul@5 | 29 | { |
paul@5 | 30 | echo "${START:--}\t${SIZE:--}\t${TYPE:--}" |
paul@5 | 31 | } |
paul@5 | 32 | |
paul@5 | 33 | # Reset the current partition details. |
paul@5 | 34 | |
paul@5 | 35 | reset_partition() |
paul@5 | 36 | { |
paul@5 | 37 | START= |
paul@5 | 38 | SIZE= |
paul@5 | 39 | TYPE= |
paul@5 | 40 | } |
paul@5 | 41 | |
paul@5 | 42 | # Emit the current partition details and proceed to the next partition. |
paul@5 | 43 | |
paul@5 | 44 | next_partition() |
paul@5 | 45 | { |
paul@5 | 46 | if [ "$START" ] || [ "$SIZE" ] || [ "$TYPE" ] ; then |
paul@5 | 47 | emit_partition |
paul@5 | 48 | reset_partition |
paul@5 | 49 | fi |
paul@5 | 50 | } |
paul@5 | 51 | |
paul@5 | 52 | |
paul@5 | 53 | |
paul@5 | 54 | # Emit the help message if requested. |
paul@5 | 55 | |
paul@5 | 56 | if [ "$1" = '--help' ] ; then |
paul@5 | 57 | cat 1>&2 <<EOF |
paul@5 | 58 | Usage: $PROGNAME ( -f <type> | -p <start> | -s <size> )... |
paul@5 | 59 | |
paul@5 | 60 | Produce partition descriptions, indicating partition type, start position and |
paul@5 | 61 | size for each partition. Each new occurrence of an active option starts a new |
paul@5 | 62 | partition description. |
paul@5 | 63 | |
paul@5 | 64 | Each line of the produced description is tab-separated with '-' indicating an |
paul@5 | 65 | empty field. |
paul@5 | 66 | EOF |
paul@5 | 67 | exit 0 |
paul@5 | 68 | fi |
paul@5 | 69 | |
paul@5 | 70 | # Process the arguments, building a partition description. |
paul@5 | 71 | |
paul@5 | 72 | reset_partition |
paul@5 | 73 | |
paul@5 | 74 | while [ "$1" ] ; do |
paul@5 | 75 | case "$1" in |
paul@5 | 76 | -f ) |
paul@5 | 77 | if [ "$TYPE" ] ; then next_partition ; fi |
paul@5 | 78 | TYPE="$2" |
paul@5 | 79 | shift 2 |
paul@5 | 80 | ;; |
paul@5 | 81 | -p ) |
paul@5 | 82 | if [ "$START" ] ; then next_partition ; fi |
paul@5 | 83 | START="$2" |
paul@5 | 84 | shift 2 |
paul@5 | 85 | ;; |
paul@5 | 86 | -s ) |
paul@5 | 87 | if [ "$SIZE" ] ; then next_partition ; fi |
paul@5 | 88 | SIZE="$2" |
paul@5 | 89 | shift 2 |
paul@5 | 90 | ;; |
paul@5 | 91 | * ) |
paul@5 | 92 | shift 1 |
paul@5 | 93 | ;; |
paul@5 | 94 | esac |
paul@5 | 95 | done |
paul@5 | 96 | |
paul@5 | 97 | # Terminate any unfinished partition. |
paul@5 | 98 | |
paul@5 | 99 | next_partition |