init

1 files changed, 77 insertions, 0 deletions

diff --git a/util/status.cc b/util/status.cc
new file mode 100644
index 0000000..0559f5b
--- /dev/null
+++ b/util/status.cc
@@ -0,0 +1,77 @@
+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "leveldb/status.h"
+
+#include <cstdio>
+
+#include "port/port.h"
+
+namespace leveldb {
+
+const char* Status::CopyState(const char* state) {
+  uint32_t size;
+  std::memcpy(&size, state, sizeof(size));
+  char* result = new char[size + 5];
+  std::memcpy(result, state, size + 5);
+  return result;
+}
+
+Status::Status(Code code, const Slice& msg, const Slice& msg2) {
+  assert(code != kOk);
+  const uint32_t len1 = static_cast<uint32_t>(msg.size());
+  const uint32_t len2 = static_cast<uint32_t>(msg2.size());
+  const uint32_t size = len1 + (len2 ? (2 + len2) : 0);
+  char* result = new char[size + 5];
+  std::memcpy(result, &size, sizeof(size));
+  result[4] = static_cast<char>(code);
+  std::memcpy(result + 5, msg.data(), len1);
+  if (len2) {
+    result[5 + len1] = ':';
+    result[6 + len1] = ' ';
+    std::memcpy(result + 7 + len1, msg2.data(), len2);
+  }
+  state_ = result;
+}
+
+std::string Status::ToString() const {
+  if (state_ == nullptr) {
+    return "OK";
+  } else {
+    char tmp[30];
+    const char* type;
+    switch (code()) {
+      case kOk:
+        type = "OK";
+        break;
+      case kNotFound:
+        type = "NotFound: ";
+        break;
+      case kCorruption:
+        type = "Corruption: ";
+        break;
+      case kNotSupported:
+        type = "Not implemented: ";
+        break;
+      case kInvalidArgument:
+        type = "Invalid argument: ";
+        break;
+      case kIOError:
+        type = "IO error: ";
+        break;
+      default:
+        std::snprintf(tmp, sizeof(tmp),
+                      "Unknown code(%d): ", static_cast<int>(code()));
+        type = tmp;
+        break;
+    }
+    std::string result(type);
+    uint32_t length;
+    std::memcpy(&length, state_, sizeof(length));
+    result.append(state_ + 5, length);
+    return result;
+  }
+}
+
+}  // namespace leveldb