moved to CharReader everywhere

1 files changed, 110 insertions, 0 deletions

diff --git a/src/core/common/Utils.hpp b/src/core/common/Utils.hpp
new file mode 100644
index 0000000..5332b50
--- /dev/null
+++ b/src/core/common/Utils.hpp
@@ -0,0 +1,110 @@
+/*
+    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/>.
+*/
+
+#ifndef _OUSIA_UTILS_H_
+#define _OUSIA_UTILS_H_
+
+#include <sstream>
+#include <string>
+
+namespace ousia {
+
+class Utils {
+public:
+	/**
+	 * Returns true if the given character is in [A-Za-z]
+	 */
+	static bool isAlphabetic(const char c)
+	{
+		return ((c >= 'A') && (c <= 'Z')) || ((c >= 'a') && (c <= 'z'));
+	}
+
+	/**
+	 * Returns true if the given character is in [0-9]
+	 */
+	static bool isNumeric(const char c) { return (c >= '0') && (c <= '9'); }
+
+	/**
+	 * Returns true if the given character is in [0-9A-Fa-f]
+	 */
+	static bool isHexadecimal(const char c)
+	{
+		return ((c >= '0') && (c <= '9')) || ((c >= 'A') && (c <= 'F')) ||
+		       ((c >= 'a') && (c <= 'f'));
+	}
+
+	/**
+	 * Returns true if the given character is in [A-Za-z0-9]
+	 */
+	static bool isAlphanumeric(const char c)
+	{
+		return isAlphabetic(c) || isNumeric(c);
+	}
+
+	/**
+	 * Returns true if the given character is in [A-Za-z_][A-Za-z0-9_-]*
+	 */
+	static bool isIdentifier(const std::string &name);
+
+	/**
+	 * Returns true if the given character is a whitespace character.
+	 */
+	static bool isWhitespace(const char c)
+	{
+		return (c == ' ') || (c == '\t') || (c == '\n') || (c == '\r');
+	}
+
+	/**
+	 * Removes whitespace at the beginning and the end of the given string.
+	 */
+	static std::string trim(const std::string &s);
+
+	/**
+	 * Turns the elements of a collection into a string separated by the
+	 * given delimiter.
+	 *
+	 * @param es is an iterable container of elements that can be appended to an
+	 * output stream (the << operator must be implemented).
+	 * @param delim is the delimiter that should be used to separate the items.
+	 * @param start is a character sequence that should be prepended to the
+	 * result.
+	 * @param end is a character sequence that should be appended to the result.
+	 */
+	template <class T>
+	static std::string join(T es, const std::string &delim,
+	                        const std::string &start = "",
+	                        const std::string &end = "")
+	{
+		std::stringstream res;
+		bool first = true;
+		res << start;
+		for (const auto &e : es) {
+			if (!first) {
+				res << delim;
+			}
+			res << e;
+			first = false;
+		}
+		res << end;
+		return res.str();
+	}
+};
+}
+
+#endif /* _OUSIA_UTILS_H_ */
+