Fix quoting in tests with CCSDS data

tests/sampledata.sh

 #!/bin/sh
+#
+# This test uses CCSDS sample data to check decoding and re-encoding.
+# Encoded size checks are performed where same size results are to be
+# expected.
+#
 set -e
-AEC=../src/aec
+AEC="../src/aec"
 if [ -n "$1" ]; then
     srcdir=$1
 fi
-CCSDS_DATA=${srcdir}/../data/121B2TestData
-ALLO=${CCSDS_DATA}/AllOptions
-EXTP=${CCSDS_DATA}/ExtendedParameters
-LOWE=${CCSDS_DATA}/LowEntropyOptions
+CCSDS_DATA="${srcdir}/../data/121B2TestData"
+ALLO="${CCSDS_DATA}/AllOptions"
+EXTP="${CCSDS_DATA}/ExtendedParameters"
+LOWE="${CCSDS_DATA}/LowEntropyOptions"
 
 filesize () {
-    wc -c $1 | awk '{print $1}'
+    wc -c "$1" | awk '{print $1}'
 }
 
 decode () {
-    $AEC -d $3 $1 test.dat
-    dd if=test.dat bs=1 count=$(filesize $2) | cmp $2 -
+    "$AEC" -d $3 "$1" test.dat
+    dd if=test.dat bs=1 count=$(filesize "$2") | cmp "$2" -
 }
 
 code () {
-    $AEC $3 $2 test.rz
-    cmp $1 test.rz
+    "$AEC" $3 "$2" test.rz
+    cmp "$1" test.rz
 }
 
 code_size () {
-    $AEC $3 $2 test.rz
-    if [ ! $(filesize test.rz) -eq $(filesize $1) ]; then
+    "$AEC" $3 "$2" test.rz
+    if [ ! $(filesize test.rz) -eq $(filesize "$1") ]; then
         echo "$1 size mismatch"
         exit 1
     fi
@@ -44,18 +49,18 @@ cosdec () {
 echo All Options
 for i in 01 02 03 04
 do
-    uf=$ALLO/test_p256n${i}.dat
-    codec $ALLO/test_p256n${i}-basic.rz $uf "-n$i -j16 -r16"
-    codec $ALLO/test_p256n${i}-restricted.rz $uf "-n$i -j16 -r16 -t"
+    uf="${ALLO}/test_p256n${i}.dat"
+    codec "${ALLO}/test_p256n${i}-basic.rz" "${uf}" "-n$i -j16 -r16"
+    codec "${ALLO}/test_p256n${i}-restricted.rz" "${uf}" "-n$i -j16 -r16 -t"
 done
 for i in 05 06 07 08 09 10 11 12 13 14 15 16
 do
-    cosdec $ALLO/test_p256n${i}.rz $ALLO/test_p256n${i}.dat \
+    cosdec "${ALLO}/test_p256n${i}.rz" "$ALLO/test_p256n${i}.dat" \
         "-n$i -j16 -r16"
 done
 for i in 17 18 19 20 21 22 23 24
 do
-    cosdec $ALLO/test_p512n${i}.rz $ALLO/test_p512n${i}.dat \
+    cosdec "${ALLO}/test_p512n${i}.rz" "$ALLO/test_p512n${i}.dat" \
         "-n$i -j16 -r32"
 done
 
@@ -64,17 +69,20 @@ for i in 1 2 3
 do
     for j in 01 02 03 04
     do
-        uf=$LOWE/Lowset${i}_8bit.dat
-        codec $LOWE/Lowset${i}_8bit.n${j}-basic.rz $uf "-n$j -j16 -r64"
-        codec $LOWE/Lowset${i}_8bit.n${j}-restricted.rz $uf "-n$j -j16 -r64 -t"
+        uf="${LOWE}/Lowset${i}_8bit.dat"
+        codec "${LOWE}/Lowset${i}_8bit.n${j}-basic.rz" "${uf}" "-n$j -j16 -r64"
+        codec "${LOWE}/Lowset${i}_8bit.n${j}-restricted.rz" "${uf}" \
+              "-n$j -j16 -r64 -t"
     done
     for j in 05 06 07 08
     do
-        codec $LOWE/Lowset${i}_8bit.n${j}.rz $LOWE/Lowset${i}_8bit.dat \
+        codec "${LOWE}/Lowset${i}_8bit.n${j}.rz" "$LOWE/Lowset${i}_8bit.dat" \
             "-n$j -j16 -r64"
     done
 done
 
 echo Extended Parameters
-decode $EXTP/sar32bit.j16.r256.rz $EXTP/sar32bit.dat "-n32 -j16 -r256 -p"
-decode $EXTP/sar32bit.j64.r4096.rz $EXTP/sar32bit.dat "-n32 -j64 -r4096 -p"
+decode "${EXTP}/sar32bit.j16.r256.rz" "${EXTP}/sar32bit.dat" \
+       "-n32 -j16 -r256 -p"
+decode "${EXTP}/sar32bit.j64.r4096.rz" "${EXTP}/sar32bit.dat" \
+       "-n32 -j64 -r4096 -p"