1 files changed, 59 insertions, 0 deletions
diff --git a/src/core/common/Utils.cpp b/src/core/common/Utils.cpp
new file mode 100644
index 0000000..c460ed4
--- /dev/null
+++ b/src/core/common/Utils.cpp
@@ -0,0 +1,59 @@
+/*
+    Ousía
+    Copyright (C) 2014, 2015  Benjamin Paaßen, Andreas Stöckel
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <algorithm>
+#include <limits>
+
+#include "Utils.hpp"
+
+namespace ousia {
+
+std::string Utils::trim(const std::string &s)
+{
+	size_t firstNonWhitespace = std::numeric_limits<size_t>::max();
+	size_t lastNonWhitespace = 0;
+	for (size_t i = 0; i < s.size(); i++) {
+		if (!isWhitespace(s[i])) {
+			firstNonWhitespace = std::min(i, firstNonWhitespace);
+			lastNonWhitespace = std::max(i, lastNonWhitespace);
+		}
+	}
+
+	if (firstNonWhitespace < lastNonWhitespace) {
+		return s.substr(firstNonWhitespace,
+		                lastNonWhitespace - firstNonWhitespace + 1);
+	}
+	return std::string{};
+}
+
+bool Utils::isIdentifier(const std::string &name)
+{
+	bool first = true;
+	for (char c : name) {
+		if (first && !(isAlphabetic(c) || c == '_')) {
+			return false;
+		}
+		if (first && !(isAlphanumeric(c) || c == '_' || c == '-')) {
+			return false;
+		}
+		first = false;
+	}
+	return true;
+}
+}
+