build a compound xorriso cmdline, on demand

releng/releng_build_jigdo

@@ -15,15 +15,28 @@ RES="${IMG}.iso ${IMG}.new ${IMG}.md5 ${IMG}.jigdo ${IMG}.template"
 # remove cruft from previous runs
 # rm -f ${RES}
 
+# create FAT partition
+# /sbin/mkfs.msdos -n Bla -C test.fat 8192
+
+# create MD5 list in base64 format
 jigdo-gen-md5-list ${DIR} > ${IMG}.md5
 
-${XOR} \
+# build the command - general section
+CMD="${XOR} \
  -as mkisofs \
  -o ${IMG}.iso \
-   -R -V 'ISO_JIGDO' \
+ -R \
+ -V ISOJIGDO \
  -partition_offset 16 \
  -J -joliet-long \
-   \
+"
+# boot section
+#if [ "${4}" ]; then
+#CMD+=
+#fi
+
+# jigdo section
+CMD+="\
  -jigdo-template-compress gzip \
  -checksum_algorithm_iso md5,sha1,sha256,sha512 \
  -checksum_algorithm_template md5,sha1,sha256,sha512 \
@@ -32,15 +45,22 @@ ${XOR} \
  -jigdo-map Debian=${DIR} \
  -md5-list  ${IMG}.md5 \
  -jigdo-min-file-size 1024 \
-   \
-   ${DIR}
+"
 
+CMD+="${DIR}"
+
+# run it
+echo -e "$0: creating iso & jigdo representations:\n$CMD\n"
+${CMD}
+
+# create another one from jigdo files
 jigit-mkimage \
    -t ${IMG}.template \
    -j ${IMG}.jigdo \
    -m Debian=${DIR} \
    -o ${IMG}.new
 
+# diff'em
 diff ${IMG}.iso ${IMG}.new
 
 # sort out the cruft