From 80150e196a9ce072914967ac2be567b6bc207ff6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stig=20Bj=C3=B8rlykke?= <stig@bjorlykke.org>
Date: Wed, 18 Dec 2013 14:18:45 +0000
Subject: [PATCH] Added col_clear_fence().

svn path=/trunk/; revision=54220
---
 epan/column-utils.c | 16 ++++++++++++++++
 epan/column-utils.h | 10 ++++++++++
 2 files changed, 26 insertions(+)

diff --git a/epan/column-utils.c b/epan/column-utils.c
index db4c485e6f..622c7374f9 100644
--- a/epan/column-utils.c
+++ b/epan/column-utils.c
@@ -161,6 +161,22 @@ col_set_fence(column_info *cinfo, const gint el)
   }
 }
 
+/* Clear the fence for a column. */
+void
+col_clear_fence(column_info *cinfo, const gint el)
+{
+  int i;
+
+  if (!CHECK_COL(cinfo, el))
+    return;
+
+  for (i = cinfo->col_first[el]; i <= cinfo->col_last[el]; i++) {
+     if (cinfo->fmt_matx[i][el]) {
+        cinfo->col_fence[i] = 0;
+     }
+  }
+}
+
 /* Gets the text of a column */
 const gchar *
 col_get_text(column_info *cinfo, const gint el)
diff --git a/epan/column-utils.h b/epan/column-utils.h
index e892e51f37..bc760bea1c 100644
--- a/epan/column-utils.h
+++ b/epan/column-utils.h
@@ -108,6 +108,16 @@ WS_DLL_PUBLIC void	col_set_writable(column_info *cinfo, const gboolean writable)
  */
 WS_DLL_PUBLIC void	col_set_fence(column_info *cinfo, const gint col);
 
+/** Clears a fence for the current column content
+ *
+ * This can be useful if a protocol wants to remove whatever
+ * a previous protocol has added to the column.
+ *
+ * @param cinfo the current packet row
+ * @param col the column to use, e.g. COL_INFO
+ */
+WS_DLL_PUBLIC void	col_clear_fence(column_info *cinfo, const gint col);
+
 /** Gets the text of a column element.
  *
  * @param cinfo the current packet row