Add gff3 format

workflows/formats.py

@@ -17,6 +17,7 @@
 
 import jflow
 from jflow import seqio
+from jflow.featureiolib.gff3 import GFF3IO
 from jflow.exceptions import InvalidFormatError
 import os
 import sys
@@ -57,4 +58,14 @@ def sff(ifile):
             if nb_seq == 10: break
     except:
         raise InvalidFormatError("The provided file '" + ifile + "' is not a sff file!")
-    
\ No newline at end of file
+
+def gff3(ifile):
+    #try:
+        reader = GFF3IO(ifile,"r")
+        nb_line = 0
+        for record in reader:
+            nb_line += 1
+            # only check the first 10 sequences
+            if nb_line == 10: break
+    #except:
+    #    raise InvalidFormatError("The provided file '" + ifile + "' is not a gff3 file!")
\ No newline at end of file