1 files changed, 36 insertions, 0 deletions
diff --git a/util/concat.h b/util/concat.h
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+++ b/util/concat.h
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+/*
+ * Prototypes for string concatenation with dynamic memory allocation.
+ *
+ * Written by Russ Allbery <rra@stanford.edu>
+ * This work is hereby placed in the public domain by its author.
+ */
+
+#ifndef UTIL_CONCAT_H
+#define UTIL_CONCAT_H 1
+
+#include <config.h>
+#include <portable/macros.h>
+
+BEGIN_DECLS
+
+/* Default to a hidden visibility for all util functions. */
+#pragma GCC visibility push(hidden)
+
+/* Concatenate NULL-terminated strings into a newly allocated string. */
+char *concat(const char *first, ...)
+    __attribute__((__malloc__, __nonnull__(1)));
+
+/*
+ * Given a base path and a file name, create a newly allocated path string.
+ * The name will be appended to base with a / between them.  Exceptionally, if
+ * name begins with a slash, it will be strdup'd and returned as-is.
+ */
+char *concatpath(const char *base, const char *name)
+    __attribute__((__malloc__, __nonnull__(2)));
+
+/* Undo default visibility change. */
+#pragma GCC visibility pop
+
+END_DECLS
+
+#endif /* UTIL_CONCAT_H */