Date: Sat, 07 Jan 2006 19:14:48 +0100 From: Kristian Vaaf <vaaf@broadpark.no> To: questions@freebsd.org Subject: Need to simplify a script that makes cool trees Message-ID: <11ca4b3b70e7.43c01328@broadpark.no>
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Hello!
This script produces a real sweet file and directory tree.
I am trying to simplify this -- it is too big for its own good.
I must remove all the bullshit but the -a switch.
And I'm sure the same thing could be accomplished in just a few lines.
Here is what it does:
# fs-tree
#
/usr/home/vaaf/mp3/out
+-----benny_benassi-whos_your_daddy-promo-cdm-2005-nbd
+-----bugz_in_the_attic-booty_la_la-mystery_and_matt_early_remix-vinyl-2005-mtc
+-----chris_cox-live_from_park_pavilion_atlanta-sat-01-01-2006-hsalive
# fs-tree -a
#
/usr/home/vaaf/mp3/out
+-----benny_benassi-whos_your_daddy-promo-cdm-2005-nbd
| +-----00-benny_benassi-whos_your_daddy-promo-cdm-2005-nbd.m3u
| +-----00-benny_benassi-whos_your_daddy-promo-cdm-2005-nbd.nfo
| +-----00-benny_benassi-whos_your_daddy-promo-cdm-2005-nbd.sfv
And so forth.
Here is the original script:
#!/bin/sh
#
# Read a directory or file list,then write a tree.
# $URBAN: fs-tree.sh,v 1.0 2005/10/24 15:05:09 vaaf Exp $
#
# -a, --all Prints all files, not just directories.
# -h, --help Prints usage information.
# -l, --list Reads a list of files from stdin.
# -v, --version Print the version and exit.
#
PATH=/bin:/usr/sbin:/usr/bin:/usr/local/bin
export PATH
umask 022
tag=`basename $0`
# *** Functions
#
# die: prints an optional argument to stderr and exits.
# warn: prints an optional argument to stderr.
#
# A common use for "die" is with a test:
#
# test -f /etc/passwd || die "No password file."
#
# This works in subshells and loops,
# but may not exit with a code other than 0.
#
die () {
echo "$tag: Error: $*" 1>&2
exit 1
}
# *** Usage
#
# Prints an optional string plus part of the comment header
# (if any) to stderr, and exits with code 1.
#
usage () {
lines=`egrep -n '^# (NAME|AUTHOR)' $0 | sed -e 's/:.*//'`
(
case "$#"
in
0) ;;
*) echo "Usage error: $*"; echo ;;
esac
case "$lines"
in
"") ;;
*) set `echo $lines | sed -e 's/ /,/'`
sed -n ${1}p $0 | sed -e 's/^#//g' |
egrep -v AUTHOR:
;;
esac ) 1>&2
exit 1
}
# *** Version
#
# Prints the current version to stdout.
#
version () {
lsedscr='s/RCSfile: //
s/.Date: //
s/,v . .Revision: / v/
s/\$//g'
lrevno='$RCSfile: fs-tree.sh,v $ $Revision: 1.0 $'
lrevdate='$Date: 2005/09/09 01:17:30 $'
echo "$lrevno $lrevdate" | sed -e "$lsedscr"
exit 0
}
# *** mktree
#
# Sort the file information properly.
#
mktree () {
scr='
s,^.$,,
/^$/d
s,[^/]*/\([^/]*\)$,+-----\1,
s,[^/]*/,| ,g'
tr '/' '\001' | sort -f | tr '\001' '/' | sed -e "$scr"
}
# *** Main program defaults
#
ac_help=
ac_prev=
ac_invalid="Invalid option; use --help to show usage"
argv=
# *** Initialize some variables set by options.
#
all=no
list=no
fopt="-type d"
for ac_option; do
# *** If the previous option needs an argument, assign it.
#
case "$ac_prev" in
"") ;;
*) eval "$ac_prev=\$ac_option"; ac_prev=; continue ;;
esac
case "$ac_option" in
-*=*) ac_optarg=`echo "$ac_option" |
sed 's/[-_a-zA-Z0-9]*=//'` ;;
*) ac_optarg= ;;
esac
# *** Main switch
#
case "$ac_option" in
-a | -all | --all | --al | --a)
all=yes; fopt="" ;;
-h | -help | --help | --hel | --he)
usage ;;
-l | -list | --list | --lis | --li | --l)
list=yes ;;
-v | -version | --version | --versio | --versi | --vers)
version ;;
-*) die "$ac_option: $ac_invalid" ;;
*) argv="$argv $ac_option" ;;
esac
done
case "$ac_prev" in
"") ;;
*) die "Missing argument to --`echo $ac_prev | sed 's/_/-/g'`" ;;
esac
# *** Real work starts here.
# Test for specific features.
#
case "$argv"
in
"") case "$list" in
"yes") top="" ;; # Sort reads stdin.
*) top="." ;;
esac
;;
*) top=$argv ;;
esac
# *** Print the directory tree.
#
case "$list"
in
"no") test -d $top || die "$top: not a directory"
cd $top; pwd; find . $fopt -print | mktree ;;
"yes") mktree < $top ;;
esac
exit 0
--
And here is my attempt to simplify it.
Now, mind you that this doesn't even work!
#!/bin/sh
#
# Read a directory or file list, then write a tree.
# $URBAN: fs-tree.sh,v 1.0 2005/10/24 15:05:09 vaaf Exp $
#
# Print files in addition to directories: -a
#
tree() {
do=`tr '/' '\001' | sort -f | tr '\001' '/' |
sed -e 's,^.$,,' \
-e '/^$/d' \
-e 's,[^/]*/\([^/]*\)$,+-----\1,' \
-e 's,[^/]*/,| ,g'`
}
all="-type d"
while [ $# -gt 0 ]; do
case $1 in
-a) all="" ;;
esac
shift
done
find . $dir $all | tree
--
I'm the biggest rookie you've ever seen.
But I'm thinking this still looks too advanced for its purpose.
Any suggestions?
Thanks!
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