diff options
Diffstat (limited to 'common/prefs_interface.h')
| -rw-r--r-- | common/prefs_interface.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/common/prefs_interface.h b/common/prefs_interface.h index 03ae3ecd..e773a35e 100644 --- a/common/prefs_interface.h +++ b/common/prefs_interface.h @@ -20,6 +20,7 @@ #include <stdint.h> #include <string> +#include <vector> namespace chromeos_update_engine { @@ -51,7 +52,7 @@ class PrefsInterface { // Associates |key| with a string |value|. Returns true on success, // false otherwise. - virtual bool SetString(const std::string& key, const std::string& value) = 0; + virtual bool SetString(const std::string& key, std::string_view value) = 0; // Gets an int64_t |value| associated with |key|. Returns true on // success, false on failure (including when the |key| is not @@ -79,6 +80,19 @@ class PrefsInterface { // this key. Calling with non-existent keys does nothing. virtual bool Delete(const std::string& key) = 0; + // Deletes the pref key from platform and given namespace subdirectories. + // Keys are matched against end of pref keys in each namespace. + // Returns true if all deletes were successful. + virtual bool Delete(const std::string& pref_key, + const std::vector<std::string>& nss) = 0; + + // Creates a key which is part of a sub preference. + static std::string CreateSubKey(const std::vector<std::string>& ns_with_key); + + // Returns a list of keys within the namespace. + virtual bool GetSubKeys(const std::string& ns, + std::vector<std::string>* keys) const = 0; + // Add an observer to watch whenever the given |key| is modified. The // OnPrefSet() and OnPrefDelete() methods will be called whenever any of the // Set*() methods or the Delete() method are called on the given key, @@ -90,6 +104,10 @@ class PrefsInterface { // anymore for future Set*() and Delete() method calls. virtual void RemoveObserver(const std::string& key, ObserverInterface* observer) = 0; + + protected: + // Key separator used to create sub key and get file names, + static const char kKeySeparator = '/'; }; } // namespace chromeos_update_engine |