1 files changed, 83 insertions, 0 deletions
diff --git a/tools/bit/util.h b/tools/bit/util.h
new file mode 100644
index 000000000000..718f1474a969
--- /dev/null
+++ b/tools/bit/util.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <map>
+#include <string>
+#include <vector>
+
+using namespace std;
+
+struct FileInfo
+{
+    bool exists;
+    time_t mtime;
+    time_t ctime;
+    off_t size;
+
+    FileInfo();
+    FileInfo(const FileInfo& that);
+    explicit FileInfo(const string& filename);
+    ~FileInfo();
+
+    bool operator==(const FileInfo& that) const;
+    bool operator!=(const FileInfo& that) const;
+};
+
+
+/**
+ * Record for a file that we are watching
+ */
+struct TrackedFile {
+    string filename;
+    FileInfo fileInfo;
+
+    TrackedFile();
+    TrackedFile(const TrackedFile& that);
+    explicit TrackedFile(const string& filename);
+    ~TrackedFile();
+
+    // Returns if the file has changed. If it doesn't currently exist, returns true.
+    bool HasChanged() const;
+};
+
+/**
+ * Get FileInfo structures recursively for all the files and symlinks in a directory.
+ * Does not traverse symlinks, but it does record them.
+ */
+void get_directory_contents(const string& dir, map<string,FileInfo>* results);
+
+bool directory_contents_differ(const map<string,FileInfo>& before,
+        const map<string,FileInfo>& after);
+
+string escape_quotes(const char* str);
+
+string escape_for_commandline(const char* str);
+
+string trim(const string& trim);
+
+bool starts_with(const string& str, const string& prefix);
+
+bool ends_with(const string& str, const string& suffix);
+
+void split_lines(vector<string>* result, const string& str);
+
+string read_file(const string& filename);
+
+#endif // UTIL_H
+