Add sizing field on show page

gui/slick/interfaces/default/displayShow.tmpl

@@ -237,7 +237,10 @@
 			<tr><td class="showLegend">Unwanted Group#if len($bwl.get_black_keywords_for("release_group"))>1 then "s" else ""#:</td>
 			<td>#echo ', '.join($bwl.get_black_keywords_for("release_group"))#</td>
 			</tr>
-		#end if	
+		#end if
+
+        <tr><td class="showLegend">Size:</td><td>$sickbeard.helpers.human(sickbeard.helpers.get_size($showLoc[0]))</td></tr>
+
 		</table>
 	
 		<table style="width:17%; float: right; vertical-align: middle; height: 100%;">

sickbeard/helpers.py

@@ -1378,4 +1378,40 @@ def clearCache(force=False):
                             except OSError, e:
                                 logger.log(u"Unable to clean " + cache_root + ": " + repr(e) + " / " + str(e),
                                            logger.WARNING)
-                                break
+                                break
+
+def human(size):
+    """
+    format a size in bytes into a 'human' file size, e.g. bytes, KB, MB, GB, TB, PB
+    Note that bytes/KB will be reported in whole numbers but MB and above will have greater precision
+    e.g. 1 byte, 43 bytes, 443 KB, 4.3 MB, 4.43 GB, etc
+    """
+    if size == 1:
+        # because I really hate unnecessary plurals
+        return "1 byte"
+
+    suffixes_table = [('bytes', 0), ('KB', 0), ('MB', 1), ('GB', 2),('TB', 2), ('PB', 2)]
+
+    num = float(size)
+    for suffix, precision in suffixes_table:
+        if num < 1024.0:
+            break
+        num /= 1024.0
+
+    if precision == 0:
+        formatted_size = "%d" % num
+    else:
+        formatted_size = str(round(num, ndigits=precision))
+
+    return "%s %s" % (formatted_size, suffix)
+
+
+def get_size(start_path='.'):
+
+    total_size = 0
+    for dirpath, dirnames, filenames in os.walk(start_path):
+        for f in filenames:
+            fp = os.path.join(dirpath, f)
+            total_size += os.path.getsize(fp)
+    return total_size
+