Powerpoint docs: add option to have rclppt use unoconv

src/filters/rclppt

@@ -30,6 +30,7 @@ LC_ALL=C ; export LC_ALL
 progname="rclppt"
 filetype=powerpoint
 
+RCLPPT_CATPPT=${RCLPPT_CATPPT:=yes}
 
 #RECFILTCOMMONCODE
 ##############################################################################
@@ -97,6 +98,7 @@ umask 77
 # !! Leave the following line unmodified !
 #ENDRECFILTCOMMONCODE
 
+if test X$RCLPPT_CATPPT = Xyes ; then
   checkcmds catppt
 
   # output the result
@@ -114,3 +116,36 @@ echo '</body></html>'
 
   # exit normally
   exit 0
+
+else
+
+  # Using unoconv
+  checkcmds unoconv pdftotext
+
+  # This needs a temp dir because we first output pdf (outputting html
+  # would produce one file per page), and pdftotext can't read from
+  # stdin
+  if test z"$RECOLL_TMPDIR" != z; then
+      ttdir=$RECOLL_TMPDIR
+  elif test z"$TMPDIR" != z ; then
+      ttdir=$TMPDIR
+  else
+      ttdir=/tmp
+  fi
+
+  tmpdir=$ttdir/rclppt_tmp$$
+  mkdir $tmpdir || exit 1
+  mkdir $tmpdir/rclppttmp || exit 1
+  unopdf=$tmpdir/rclppttmp/output.pdf
+  cleanup()
+  {
+      # Note that we're using a constant part (rclkwdtmp), that hopefully
+      # guarantees that we can't do big mistakes here.
+      rm -rf $tmpdir/rclppttmp
+      rmdir $tmpdir
+  }
+    
+  trap cleanup EXIT HUP QUIT INT TERM
+  unoconv -f pdf -o $unopdf "$infile"
+  `dirname $0`/rclpdf $unopdf
+fi