Move string utilities to a separate compilation unit

These don't really have anything to do with logging.  Also replace a call to
the non-standard strdup() in the process.

1 files changed, 21 insertions, 0 deletions

diff --git a/src/string_utils.h b/src/string_utils.h
new file mode 100644
index 0000000..53f09fd
--- /dev/null
+++ b/src/string_utils.h
@@ -0,0 +1,21 @@
+// Copyright 2007-2022 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#ifndef JALV_STRING_UTILS_H
+#define JALV_STRING_UTILS_H
+
+#include "attributes.h"
+
+JALV_BEGIN_DECLS
+
+/// Return a newly allocated copy of a string
+char*
+jalv_strdup(const char* str);
+
+/// Return a newly allocated concatenation of two strings
+char*
+jalv_strjoin(const char* a, const char* b);
+
+JALV_END_DECLS
+
+#endif // JALV_STRING_UTILS_H