Initial implementation of import from archive #14

If source is .tar.gz a temp directory is created and the content of the archive are extracted into it. The temp directory is then passed on as the source directory to operate on. On exit the temp directory is removed via an EXIT trap

goprox

@@ -96,13 +96,14 @@ libraryopt=""
 processopt=""
 copyrightopt=""
 geonamesopt=""
-firmwareopt==""
+firmwareopt=""
 exiftoolstatus=0
 validlibrary=false
 validarchive=false
 validimported=false
 validprocessed=false
 validdeleted=false
+tempdir=""
 
 function _debug()
 {
@@ -983,6 +984,36 @@ _debug "LibraryOpt: $libraryopt"
 _debug "CopyrightOpt: $copyrightopt"
 _debug "GeonamesOpt: $geonamesopt"
 
+# Check if source is a tar.gz file
+_sourcetype="${sourceopt#*.}"
+_debug "Source type: $_sourcetype"
+
+case $_sourcetype in
+  tar.gz)
+  # This is a gziped tar ball
+    _info "Source is $_sourcetype"
+
+  # Need to uncompress into a temp directory to proceed
+  tempdir=`mktemp -d /tmp/${__this__}.XXXXXX` || {
+      _error "Unable to create temp dir: $tempdir"
+      exit 1
+  }
+  # Make sure it gets removed on exit
+  trap 'rm -rf -- "$tempdir"' EXIT
+
+  _info "Temp dir: $tempdir" 
+
+  tar -xvf ${sourceopt} -C $tempdir || {
+    # Archive extraction failed
+    _error "Archive extraction failed!"
+    exit 1
+  }
+
+  # Now make temp dir the source of processing
+  sourceopt=$tempdir
+  ;;
+esac
+
 # Now override any parameters that were specified
 if [[ -n $sourceopt ]]; then
   source=$sourceopt