[src/trunk]: src/usr.bin/genassym - use just the basename for program name

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/374438ffeea9
branches:  trunk
changeset: 325795:374438ffeea9
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Jan 06 22:43:15 2014 +0000

description:
- use just the basename for program name
- quote variables
- use mktemp to create directories (from jtc)
- exit on errors

diffstat:

 usr.bin/genassym/genassym.sh |  33 ++++++++++++++++++---------------
 1 files changed, 18 insertions(+), 15 deletions(-)

diffs (90 lines):

diff -r 93361610c2ad -r 374438ffeea9 usr.bin/genassym/genassym.sh
--- a/usr.bin/genassym/genassym.sh      Mon Jan 06 21:15:15 2014 +0000
+++ b/usr.bin/genassym/genassym.sh      Mon Jan 06 22:43:15 2014 +0000
@@ -1,5 +1,5 @@
 #!/bin/sh -
-#      $NetBSD: genassym.sh,v 1.7 2011/07/05 05:19:02 matt Exp $
+#      $NetBSD: genassym.sh,v 1.8 2014/01/06 22:43:15 christos Exp $
 #
 # Copyright (c) 1997 Matthias Pfaller.
 # All rights reserved.
@@ -25,7 +25,7 @@
 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 
-progname=${0}
+progname="$(basename "${0}")"
 : ${AWK:=awk}
 
 ccode=0                # generate temporary C file, compile it, execute result
@@ -37,6 +37,8 @@
        echo "usage: ${progname} [-c | -f] -- compiler command" >&2
 }
 
+set -e
+
 while getopts cf i
 do
        case "$i" in
@@ -48,7 +50,7 @@
                ;;
        esac
 done
-shift $(($OPTIND - 1))
+shift "$(($OPTIND - 1))"
 if [ $# -eq 0 ]; then
        usage
        exit 1
@@ -56,7 +58,7 @@
 
 # Deal with any leading environment settings..
 
-while [ "$1" ]
+while [ -n "$1" ]
 do
        case "$1" in
        *=*)
@@ -69,9 +71,10 @@
        esac
 done
 
-genassym_temp=/tmp/genassym.$$
+genassym_temp="$(mktemp -d "${TMPDIR-/tmp}/genassym.XXXXXX")"
 
-if ! mkdir $genassym_temp; then
+
+if [ ! -d $genassym_temp ]; then
        echo "${progname}: unable to create temporary directory" >&2
        exit 1
 fi
@@ -191,21 +194,21 @@
                printf("return(0); }\n");
        }
 }
-' ccode=$ccode fcode=$fcode > ${genassym_temp}/assym.c || exit 1
+' ccode="$ccode" fcode="$fcode" > "${genassym_temp}/assym.c" || exit 1
 
-if [ $ccode = 1 ] ; then
-       "$@" ${genassym_temp}/assym.c -o ${genassym_temp}/genassym && \
-           ${genassym_temp}/genassym
-elif [ $fcode = 1 ]; then
+if [ "$ccode" = 1 ]; then
+       "$@" "${genassym_temp}/assym.c" -o "${genassym_temp}/genassym" && \
+           "${genassym_temp}/genassym"
+elif [ "$fcode" = 1 ]; then
        # Kill all of the "#" and "$" modifiers; locore.s already
        # prepends the correct "constant" modifier.
-       "$@" -S ${genassym_temp}/assym.c -o - | sed -e 's/\$//g' | \
+       "$@" -S "${genassym_temp}/assym.c" -o - | sed -e 's/\$//g' | \
            sed -n 's/.*XYZZY//gp'
 else
        # Kill all of the "#" and "$" modifiers; locore.s already
        # prepends the correct "constant" modifier.
-       "$@" -S ${genassym_temp}/assym.c -o - > \
-           ${genassym_temp}/genassym.out && \
-           sed -e 's/#//g' -e 's/\$//g' < ${genassym_temp}/genassym.out | \
+       "$@" -S "${genassym_temp}/assym.c" -o - > \
+           "${genassym_temp}/genassym.out" && \
+           sed -e 's/#//g' -e 's/\$//g' < "${genassym_temp}/genassym.out" | \
            sed -n 's/.*XYZZY/#define/gp'
 fi