Create Status objects from errno (#1374)

* Add a portable interface to strerror

* Add Status::FromErrno

* Add strerror_test.cc to the Xcode project

* Use glibc feature selection macros instead of return-type overloads

* Fix tensorflow references

1 files changed, 36 insertions, 0 deletions

diff --git a/Firestore/core/src/firebase/firestore/util/strerror.h b/Firestore/core/src/firebase/firestore/util/strerror.h
new file mode 100644
index 0000000..72c0300
--- /dev/null
+++ b/Firestore/core/src/firebase/firestore/util/strerror.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_STRERROR_H_
+#define FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_STRERROR_H_
+
+#include <string>
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+// A portable and thread-safe alternative to strerror().
+// Returns a human-readable string describing the given POSIX error
+// code. If the error code is not translatable, the string will be
+// "Unknown error nnn". errno will not be modified by this call.
+std::string StrError(int errnum);
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_STRERROR_H_