1 files changed, 44 insertions, 0 deletions
diff --git a/src/utility.cc b/src/utility.cc
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+++ b/src/utility.cc
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+// Copyright 2016 Benjamin Barenblat
+//
+// 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.
+
+#define _POSIX_C_SOURCE 201502L
+#undef _GNU_SOURCE
+
+#include "utility.h"
+
+#include <string.h>
+
+#include <cerrno>
+#include <string>
+#include <vector>
+
+#include <glog/logging.h>
+
+namespace scoville {
+
+std::string ErrnoText() {
+  std::vector<char> text(64);
+  int strerror_result;
+  while ((strerror_result = strerror_r(errno, text.data(), text.size())) ==
+         ERANGE) {
+    VLOG(1) << "ErrnoText doubling message size from " << text.size();
+    text.resize(text.size() * 2);
+  }
+  if (strerror_result != 0) {
+    return "(could not generate error message)";
+  }
+  return std::string(text.begin(), text.end());
+}
+
+}  // namespace scoville