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Diffstat (limited to 'examples/scripts/shprompt')
| -rw-r--r-- | examples/scripts/shprompt | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/examples/scripts/shprompt b/examples/scripts/shprompt new file mode 100644 index 0000000..098c45f --- /dev/null +++ b/examples/scripts/shprompt @@ -0,0 +1,153 @@ +# +# shprompt -- give a prompt and get an answer satisfying certain criteria +# +# shprompt [-dDfFsy] prompt +# s = prompt for string +# f = prompt for filename +# F = prompt for full pathname to a file or directory +# d = prompt for a directory name +# D = prompt for a full pathname to a directory +# y = prompt for y or n answer +# +# Chet Ramey +# chet@ins.CWRU.Edu +# +# Copyright 2002 Chester Ramey +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# TThis program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +type=file + +OPTS=dDfFsy + +succeed() +{ + echo "$1" + exit 0 +} + +while getopts "$OPTS" c +do + case "$c" in + s) type=string + ;; + f) type=file + ;; + F) type=path + ;; + d) type=dir + ;; + D) type=dirpath + ;; + y) type=yesno + ;; + ?) echo "usage: $0 [-$OPTS] prompt" 1>&2 + exit 2 + ;; + esac +done + +if [ "$OPTIND" -gt 1 ] ; then + shift $(( $OPTIND - 1 )) +fi + +while : +do + case "$type" in + string) + echo -n "$1" 1>&2 + read ans || exit 1 + if [ -n "$ans" ] ; then + succeed "$ans" + fi + ;; + file|path) + echo -n "$1" 1>&2 + read ans || exit 1 + # + # use `fn' and eval so that bash will do tilde expansion for + # me + # + eval fn="$ans" + case "$fn" in + /*) if test -e "$fn" ; then + succeed "$fn" + else + echo "$0: '$fn' does not exist" 1>&2 + fi + ;; + *) if [ "$type" = "path" ] ; then + echo "$0: must give full pathname to file" 1>&2 + else + if test -e "$fn" ; then + succeed "$fn" + else + echo "$0: '$fn' does not exist" 1>&2 + fi + fi + ;; + esac + ;; + dir|dirpath) + echo -n "$1" 1>&2 + read ans || exit 1 + # + # use `fn' and eval so that bash will do tilde expansion for + # me + # + eval fn="$ans" + case "$fn" in + /*) if test -d "$fn" ; then + succeed "$fn" + elif test -e "$fn" ; then + echo "$0 '$fn' is not a directory" 1>&2 + else + echo "$0: '$fn' does not exist" 1>&2 + fi + ;; + *) if [ "$type" = "dirpath" ] ; then + echo "$0: must give full pathname to directory" 1>&2 + else + if test -d "$fn" ; then + succeed "$fn" + elif test -e "$fn" ; then + echo "$0 '$fn' is not a directory" 1>&2 + else + echo "$0: '$fn' does not exist" 1>&2 + fi + fi + ;; + esac + ;; + yesno) + echo -n "$1" 1>&2 + read ans || exit 1 + case "$ans" in + y|Y|[yY][eE][sS]) + succeed "yes" + ;; + n|N|[nN][oO]) + succeed "no" + exit 0 + ;; + *) + echo "$0: yes or no required" 1>&2 + ;; + esac + ;; + esac +done + +exit 1 |