Revert "Make libbcc public."

This reverts commit 80232dd16c0affb2afae01cde6c94abf23ac1ba8.
diff --git a/lib/ExecutionEngine/OutputFile.cpp b/lib/ExecutionEngine/OutputFile.cpp
new file mode 100644
index 0000000..6200617
--- /dev/null
+++ b/lib/ExecutionEngine/OutputFile.cpp
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2012, The Android Open Source Project
+ *
+ * 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.
+ */
+
+#include "OutputFile.h"
+
+#include <cstdlib>
+
+#include <llvm/Support/raw_ostream.h>
+
+#include "DebugHelper.h"
+
+using namespace bcc;
+
+OutputFile *OutputFile::CreateTemporary(const std::string &pFileTemplate,
+                                        unsigned pFlags) {
+  char *tmp_filename = NULL;
+  int tmp_fd;
+  OutputFile *result = NULL;
+
+  // Allocate memory to hold the generated unique temporary filename.
+  tmp_filename =
+      new (std::nothrow) char [ pFileTemplate.length() + /* .XXXXXX */7 + 1 ];
+  if (tmp_filename == NULL) {
+    ALOGE("Out of memory when allocates memory for filename %s in "
+          "OutputFile::CreateTemporary()!", pFileTemplate.c_str());
+    return NULL;
+  }
+
+  // Construct filename template for mkstemp().
+  if (pFileTemplate.length() > 0)
+    ::memcpy(tmp_filename, pFileTemplate.c_str(), pFileTemplate.length());
+  ::strncpy(tmp_filename + pFileTemplate.length(), ".XXXXXX", 7);
+
+  // POSIX mkstemp() never returns EINTR.
+  tmp_fd = ::mkstemp(tmp_filename);
+  if (tmp_fd < 0) {
+    llvm::error_code err(errno, llvm::posix_category());
+    ALOGE("Failed to create temporary file using mkstemp() for %s! (%s)",
+          tmp_filename, err.message().c_str());
+    delete [] tmp_filename;
+    return NULL;
+  }
+
+  // Create result OutputFile.
+  result = new (std::nothrow) OutputFile(tmp_filename, pFlags);
+  if (result == NULL) {
+    ALOGE("Out of memory when creates OutputFile for %s!", tmp_filename);
+    // Fall through to the clean-up codes.
+  } else {
+    if (result->hasError()) {
+      ALOGE("Failed to open temporary output file %s! (%s)",
+            result->getName().c_str(), result->getErrorMessage().c_str());
+      delete result;
+      result = NULL;
+      // Fall through to the clean-up codes.
+    }
+  }
+
+  // Clean up.
+  delete [] tmp_filename;
+  ::close(tmp_fd);
+
+  return result;
+}
+
+OutputFile::OutputFile(const std::string &pFilename, unsigned pFlags)
+  : super(pFilename, pFlags) { }
+
+ssize_t OutputFile::write(const void *pBuf, size_t count) {
+  if ((mFD < 0) || hasError()) {
+    return -1;
+  }
+
+  if ((count <= 0) || (pBuf == NULL)) {
+    // Keep safe and issue a warning.
+    ALOGW("OutputFile::write: count = %zu, buffer = %p", count, pBuf);
+    return 0;
+  }
+
+  while (count > 0) {
+    ssize_t write_size = ::write(mFD, pBuf, count);
+
+    if (write_size > 0) {
+      return write_size;
+    } else if ((errno == EAGAIN) || (errno == EINTR)) {
+      // If the errno is EAGAIN or EINTR, then we try to write again.
+      //
+      // Fall-through
+    } else {
+      detectError();
+      return -1;
+    }
+  }
+  // unreachable
+  return 0;
+}
+
+void OutputFile::truncate() {
+  if (mFD < 0) {
+    return;
+  }
+
+  do {
+    if (::ftruncate(mFD, 0) == 0) {
+      return;
+    }
+  } while (errno == EINTR);
+  detectError();
+
+  return;
+}
+
+llvm::raw_fd_ostream *OutputFile::dup() {
+  int newfd;
+
+  do {
+    newfd = ::dup(mFD);
+    if (newfd < 0) {
+      if (errno != EINTR) {
+        detectError();
+        return NULL;
+      }
+      // EINTR
+      continue;
+    }
+    // dup() returns ok.
+    break;
+  } while (true);
+
+  llvm::raw_fd_ostream *result =
+      new (std::nothrow) llvm::raw_fd_ostream(newfd, /* shouldClose */true);
+
+  if (result == NULL) {
+    mError.assign(llvm::errc::not_enough_memory, llvm::system_category());
+  }
+
+  return result;
+}