1 files changed, 50 insertions, 0 deletions
diff --git a/tensorflow/stream_executor/lib/path.cc b/tensorflow/stream_executor/lib/path.cc
new file mode 100644
index 0000000000..a6e76e99b7
--- /dev/null
+++ b/tensorflow/stream_executor/lib/path.cc
@@ -0,0 +1,50 @@
+#include "tensorflow/stream_executor/lib/path.h"
+#include "tensorflow/stream_executor/lib/strcat.h"
+
+using ::perftools::gputools::port::StringPiece;
+using ::perftools::gputools::port::StrAppend;
+
+namespace perftools {
+namespace gputools {
+namespace port {
+namespace internal {
+
+static bool IsAbsolutePath(port::StringPiece path) {
+  return !path.empty() && path[0] == '/';
+}
+
+// For an array of paths of length count, append them all together,
+// ensuring that the proper path separators are inserted between them.
+string JoinPathImpl(std::initializer_list<port::StringPiece> paths) {
+  string result;
+
+  for (port::StringPiece path : paths) {
+    if (path.empty()) continue;
+
+    if (result.empty()) {
+      result = path.ToString();
+      continue;
+    }
+
+    if (result[result.size() - 1] == '/') {
+      if (IsAbsolutePath(path)) {
+        StrAppend(&result, path.substr(1));
+      } else {
+        StrAppend(&result, path);
+      }
+    } else {
+      if (IsAbsolutePath(path)) {
+        StrAppend(&result, path);
+      } else {
+        StrAppend(&result, "/", path);
+      }
+    }
+  }
+
+  return result;
+}
+
+}  // namespace internal
+}  // namespace port
+}  // namespace gputools
+}  // namespace perftools