util/StringFormat: new utility library

src/util/StringFormat.hxx

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2010-2015 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef STRING_FORMAT_HXX
+#define STRING_FORMAT_HXX
+
+#include "StringBuffer.hxx"
+
+#include <stdio.h>
+
+template<typename... Args>
+static inline void
+StringFormat(char *buffer, size_t size,
+	     const char *fmt, Args&&... args) noexcept
+{
+	snprintf(buffer, size, fmt, args...);
+}
+
+template<size_t CAPACITY, typename... Args>
+static inline void
+StringFormat(StringBuffer<CAPACITY> &buffer,
+	     const char *fmt, Args&&... args) noexcept
+{
+	StringFormat(buffer.data(), buffer.capacity(), fmt, args...);
+}
+
+template<size_t CAPACITY, typename... Args>
+static inline StringBuffer<CAPACITY>
+StringFormat(const char *fmt, Args&&... args) noexcept
+{
+	StringBuffer<CAPACITY> result;
+	StringFormat(result, fmt, args...);
+	return result;
+}
+
+template<typename... Args>
+static inline void
+StringFormatUnsafe(char *buffer, const char *fmt, Args&&... args) noexcept
+{
+	sprintf(buffer, fmt, args...);
+}
+
+#endif