Files missed from previous commit.

1 files changed, 37 insertions, 0 deletions

diff --git a/src/util.cc b/src/util.cc
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index 0000000..5f4cd39
--- /dev/null
+++ b/src/util.cc
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+/*
+    Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "util.h"
+
+using std::string;
+
+/** @param s A string.
+ *  @return true if the string contains only space, newline or tab characters, or is empty.
+ */
+bool
+sub::empty_or_white_space (string s)
+{
+	for (size_t i = 0; i < s.length(); ++i) {
+		if (s[i] != ' ' && s[i] != '\n' && s[i] != '\t') {
+			return false;
+		}
+	}
+
+	return true;
+}