1 files changed, 72 insertions, 0 deletions
diff --git a/src/lib/icu/Util.cxx b/src/lib/icu/Util.cxx
new file mode 100644
index 000000000..ae47423ad
--- /dev/null
+++ b/src/lib/icu/Util.cxx
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2003-2015 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "Util.hxx"
+#include "util/WritableBuffer.hxx"
+#include "util/ConstBuffer.hxx"
+
+#include <unicode/ustring.h>
+
+#include <assert.h>
+#include <string.h>
+
+WritableBuffer<UChar>
+UCharFromUTF8(const char *src)
+{
+	assert(src != nullptr);
+
+	const size_t src_length = strlen(src);
+	const size_t dest_capacity = src_length;
+	UChar *dest = new UChar[dest_capacity];
+
+	UErrorCode error_code = U_ZERO_ERROR;
+	int32_t dest_length;
+	u_strFromUTF8(dest, dest_capacity, &dest_length,
+		      src, src_length,
+		      &error_code);
+	if (U_FAILURE(error_code)) {
+		delete[] dest;
+		return nullptr;
+	}
+
+	return { dest, size_t(dest_length) };
+}
+
+WritableBuffer<char>
+UCharToUTF8(ConstBuffer<UChar> src)
+{
+	assert(!src.IsNull());
+
+	/* worst-case estimate */
+	size_t dest_capacity = 4 * src.size;
+
+	char *dest = new char[dest_capacity];
+
+	UErrorCode error_code = U_ZERO_ERROR;
+	int32_t dest_length;
+	u_strToUTF8(dest, dest_capacity, &dest_length, src.data, src.size,
+		    &error_code);
+	if (U_FAILURE(error_code)) {
+		delete[] dest;
+		return nullptr;
+	}
+
+	return { dest, size_t(dest_length) };
+}