1 files changed, 17 insertions, 1 deletions
diff --git a/yaksh/file_utils.py b/yaksh/file_utils.py
index f41c531..b178eeb 100644
--- a/yaksh/file_utils.py
+++ b/yaksh/file_utils.py
@@ -2,7 +2,7 @@ import shutil
 import os
 import zipfile
 import tempfile
-
+import csv
 
 def copy_files(file_paths):
     """ Copy Files to current directory, takes
@@ -50,3 +50,19 @@ def extract_files(zip_file, path=None):
         zip_file.close()
         return zfiles, extract_path
 
+
+def is_csv(document):
+    ''' Check if document is csv with ',' as the delimiter'''
+    try:
+        try:
+            content = document.read(1024).decode('utf-8')
+        except AttributeError:
+            document.seek(0)
+            content = document.read(1024)
+        sniffer = csv.Sniffer()
+        dialect = sniffer.sniff(content, delimiters=',')
+        document.seek(0)
+    except (csv.Error, UnicodeDecodeError):
+        return False, None
+    return True, dialect
+