istdup() performs the equivalent of strdup() on a `struct ist`.
---
include/common/ist.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/include/common/ist.h b/include/common/ist.h
index 4d75d8607..9614f957d 100644
--- a/include/common/ist.h
+++ b/include/common/ist.h
@@ -420,6 +420,23 @@ static inline ssize_t istscpy(struct ist *dst, const
struct ist src, size_t coun
return -1;
}
+/* This function performs the equivalent of strdup() on the given <src>.
+ * If this function fails to allocate memory an `ist` with `.ptr = NULL` and
`.len = 0`
+ * is returned.
+ */
+static inline struct ist istdup(const struct ist src)
+{
+ const size_t alloc_size = src.len;
+ const char *alloc = malloc(alloc_size);
+ struct ist dst = ist2(alloc, 0);
+
+ if (dst.ptr != NULL) {
+ istcpy(&dst, src, alloc_size);
+ }
+
+ return dst;
+}
+
/* appends <src> after <dst> for a maximum of <count> total bytes in <dst>
after
* the copy. <dst> is assumed to be <count> or less before the call. The new
* string's length is returned, or -1 if a truncation happened. In all cases,
--
2.25.1
