1 files changed, 98 insertions, 0 deletions
diff --git a/src/dpl/core/src/errno_string.cpp b/src/dpl/core/src/errno_string.cpp
new file mode 100644
index 0000000..e481a02
--- /dev/null
+++ b/src/dpl/core/src/errno_string.cpp
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *    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.
+ */
+/*
+ * @file        errno_string.h
+ * @author      Przemyslaw Dobrowolski (p.dobrowolsk@samsung.com)
+ * @version     1.0
+ * @brief       This file is the implementation file of errno string
+ */
+#include <stddef.h>
+#include <dpl/errno_string.h>
+#include <dpl/assert.h>
+#include <dpl/exception.h>
+#include <dpl/assert.h>
+#include <dpl/scoped_free.h>
+#include <string>
+#include <cstddef>
+#include <cstring>
+#include <malloc.h>
+#include <cerrno>
+#include <stdexcept>
+
+namespace CCHECKER {
+namespace // anonymous
+{
+const size_t DEFAULT_ERRNO_STRING_SIZE = 32;
+} // namespace anonymous
+
+std::string GetErrnoString(int error)
+{
+    size_t size = DEFAULT_ERRNO_STRING_SIZE;
+    char *buffer = NULL;
+
+    for (;;) {
+        // Add one extra characted for end of string null value
+        char *newBuffer = static_cast<char *>(::realloc(buffer, size + 1));
+
+        if (!newBuffer) {
+            // Failed to realloc
+            ::free(buffer);
+            throw std::bad_alloc();
+        }
+
+        // Setup reallocated buffer
+        buffer = newBuffer;
+        ::memset(buffer, 0, size + 1);
+
+        // Try to retrieve error string
+#if (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE
+        // The XSI-compliant version of strerror_r() is provided if:
+        int result = ::strerror_r(error, buffer, size);
+
+        if (result == 0) {
+            ScopedFree<char> scopedBufferFree(buffer);
+            return std::string(buffer);
+        }
+#else
+        errno = 0;
+
+        // Otherwise, the GNU-specific version is provided.
+        char *result = ::strerror_r(error, buffer, size);
+
+        if (result != NULL) {
+            ScopedFree<char> scopedBufferFree(buffer);
+            return std::string(result);
+        }
+#endif
+
+        // Interpret errors
+        switch (errno) {
+        case EINVAL:
+            // We got an invalid errno value
+                ::free(buffer);
+            ThrowMsg(InvalidErrnoValue, "Invalid errno value: " << error);
+
+        case ERANGE:
+            // Incease buffer size and retry
+            size <<= 1;
+            continue;
+
+        default:
+            Assert(0 && "Invalid errno value after call to strerror_r!");
+        }
+    }
+}
+} // namespace CCHECKER