#emacs: -*- mode: shell-script; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil -*-
#ex: set sts=4 ts=4 sw=4 et:
-# play save
+# play safe
set -e
set -u
ai_envfile=
ai_package=
ai_verbose=
+ai_dialog_title=
+ai_force=0
+ai_file=
print_verbose()
{
File to be sourced before invocation of the COMMAND. If not found,
PACKAGE gets installed first.
+ -f, --force
+ Skip all checks and install package(s) provided via --package.
+
+ -F, --file=FILE
+ If specified file is not present, install the PACKAGE and run
+ the COMMAND.
+
-v, --verbose
Enable additional progress messages.
+ -t, --title
+ Optinal title of the installation dialog.
+
-h, --help
Print short description, usage summary and option list.
# Note that we use `"$@"' to let each command-line parameter expand to a
# separate word. The quotes around `$@' are essential!
# We need CLOPTS as the `eval set --' would nuke the return value of getopt.
-CLOPTS=`getopt -o h,e:,p:,v --long help,version,environment-file:,package:,verbose, -n 'nd-autoinstall' -- "$@"`
+CLOPTS=`getopt -o h,e:,p:,t:,f,F:,v --long help,version,environment-file:,package:,title:,verbose,force,file: -n 'nd-autoinstall' -- "$@"`
if [ $? != 0 ] ; then
echo "Terminating..." >&2
while true ; do
case "$1" in
- -e|--environment-file) shift; ai_envfile=$1; shift;;
- -p|--package) shift; ai_package=$1; shift;;
+ -e|--environment-file) shift; ai_envfile="$1"; shift;;
+ -f|--force) ai_force=1; shift;;
+ -F|--file) shift; ai_file="$1"; shift;;
+ -p|--package) shift; ai_package="$1"; shift;;
+ -t|--title) shift; ai_dialog_title="$1"; shift;;
-v|--verbose) ai_verbose=1; shift;;
-h|--help) print_help; exit 0;;
--version) print_version; exit 0;;
exit 2
fi
-ai_command=$1; shift
-[ -z "$ai_package" ] && ai_package=$ai_command
+ai_command="$1"; shift
+[ -z "$ai_package" ] && ai_package=$(basename "$ai_command")
+
+[ -z "$ai_dialog_title" ] && ai_dialog_title="Package installation"
ai_envfile_failed=
if [ ! -z "$ai_envfile" ]; then
source "$ai_envfile" || ai_envfile_failed=1
fi
-if [ ! -z "$ai_envfile_failed" ] || ! which $ai_command >/dev/null; then
- if ! zenity --question \
- --text="To run '$ai_command', $ai_package package needs to be installed. Do you want to proceed?"; then
- exit 2
- fi
+#
+# Decide either installation is necessary
+#
+do_install=0
+if [ ! -z "$ai_envfile_failed" ]; then
+ print_verbose "Environment file $ai_envfile failed to source. Install $ai_package"
+ do_install=1
+fi
+if [ ! -z "$ai_file" ] && [ ! -e "$ai_file" ]; then
+ print_verbose "File $ai_file absent. Install $ai_package"
+ do_install=1
+fi
+if ! which "$ai_command" > /dev/null && [ ! -e "$ai_command" ]; then
+ print_verbose "Command $ai_command is not available. Install $ai_package"
+ do_install=1
+fi
+if [ $ai_force -eq 1 ]; then
+ print_verbose "Force installation of $ai_package"
+ do_install=1
+fi
+
+if [ $do_install -eq 1 ]; then
+ # Figure out amount of space to download/occupy
+ space_info="$(LC_ALL=C apt-get --trivial-only --print-uris install $ai_package 2>/dev/null \
+ | grep -e '^\(Need to get \|After this\)' || : )"
+ if [ $ai_force -eq 0 ]; then
+ if ! zenity --question \
+ --text="To run '$ai_command', $ai_package package needs to be installed.
+
+$space_info
+
+Do you want to proceed?"; then
+ exit 2
+ fi
+ fi
print_verbose "Need to install $ai_package to run $ai_command"
DEBIAN_FRONTEND=gnome /usr/bin/apt-get install -y $ai_package 2>&1 \
&& rm -f $logfile; } \
| tee $logfile \
- | zenity --title="nd-autoinstall" \
- --text="Installing $ai_package" \
+ | zenity --title="$ai_dialog_title" \
+ --text="Installing $ai_package
+$space_info" \
--progress --pulsate --auto-close --auto-kill
if [ -e $logfile ] ; then
zenity --title="Installation of $ai_package has failed: see $logfile" \
}
fi
-print_verbose "Running $ai_command"
-$ai_command "$@"
+if which $ai_command > /dev/null 2>&1; then
+ # only run if executable
+ print_verbose "Running $ai_command"
+ $ai_command "$@"
+fi