undeb: clean up

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 40 insertions, 34 deletions

diff --git a/examples/undeb b/examples/undeb
index 37104e9d8..c30baf31b 100755
--- a/examples/undeb
+++ b/examples/undeb
@@ -5,49 +5,55 @@
 # Requires the programs (ar, tar, gzip, and the pager more or less).
 #
 usage() {
-echo "Usage: undeb -c package.deb            <Print control file info>"
-echo "       undeb -l package.deb            <List contents of deb package>"
-echo "       undeb -x package.deb /foo/boo   <Extract deb package to this directory,"
-echo "                                        put . for current directory>"
-exit
+        cat <<EOF
+Usage: undeb -c package.deb            <Print control file info>
+       undeb -l package.deb            <List contents of deb package>
+       undeb -x package.deb /foo/boo   <Extract deb package to this directory,
+                                        put . for current directory>
+EOF
+        exit
 }
 
 deb=$2
 
 exist() {
-if [ "$deb" = "" ]; then
-usage
-elif [ ! -s "$deb" ]; then
-echo "Can't find $deb!"
-exit
-fi
+        if [ -z "${deb}" ]; then
+                usage
+        elif [ ! -s "${deb}" ]; then
+                echo "Can't find ${deb}!"
+                exit 1
+        fi
 }
 
-if [ "$1" = "" ]; then
-usage
+if [ -z "$1" ]; then
+        usage
 elif [ "$1" = "-l" ]; then
-exist
-type more >/dev/null 2>&1 && pager=more
-type less >/dev/null 2>&1 && pager=less
-[ "$pager" = "" ] && echo "No pager found!" && exit
-(ar -p $deb control.tar.gz | tar -xzO *control ; echo -e "\nPress enter to scroll, q to Quit!\n" ; ar -p $deb data.tar.gz | tar -tzv) | $pager
-exit
+        exist
+        type more >/dev/null 2>&1 && pager=more
+        type less >/dev/null 2>&1 && pager=less
+        [ -z "${pager}" ] && echo "No pager found!" && exit 1
+        (
+                ar -p "${deb}" control.tar.gz | tar -xzO *control
+                printf "\nPress enter to scroll, q to Quit!\n\n"
+                ar -p "${deb}" data.tar.gz | tar -tzv
+        ) | ${pager}
+        exit
 elif [ "$1" = "-c" ]; then
-exist
-ar -p $deb control.tar.gz | tar -xzO *control
-exit
+        exist
+        ar -p "${deb}" control.tar.gz | tar -xzO *control
+        exit
 elif [ "$1" = "-x" ]; then
-exist
-if [ "$3" = "" ]; then
-usage
-elif [ ! -d "$3" ]; then
-echo "No such directory $3!"
-exit
-fi
-ar -p $deb data.tar.gz | tar -xzvpf - -C $3 || exit
-echo
-echo "Extracted $deb to $3!"
-exit
+        exist
+        if [ -z "$3" ]; then
+                usage
+        elif [ ! -d "$3" ]; then
+                echo "No such directory $3!"
+                exit 1
+        fi
+        ar -p "${deb}" data.tar.gz | tar -xzvpf - -C "$3" || exit
+        echo
+        echo "Extracted ${deb} to $3!"
+        exit
 else
-usage
+        usage
 fi