WPILib Reorganization

This is a major restructuring of the WPILib repository to simply build
procedures and remove the remnants of Maven from everything except the
eclipse plugins. Gradle files have been largely simplified or rewritten,
taking advantage of splitting up parts of the build into separate build
files for ease of reading.

The eclipse plugins are now in a separate project, as is ntcore. All
dependencies are resolved via Maven dependencies, with the
Jenkins-maintained WPILib repo. Project structures have also been
simplified: we no longer have separate subprojects inside wpilibc and
wpilibj. Where possible, these changes hav been done with git renames,
to make sure we still have full history for all repositories. Other
unrelated subprojects have also been broken out: OutlineViewer is now a
separate project.

Change-Id: Ib4e2a6e1a2f66427a14f16612b0e0d69ed661878

wpilibc/Athena/src/Preferences.cpp

@@ -0,0 +1,218 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in $(WIND_BASE)/WPILib.  */
+/*----------------------------------------------------------------------------*/
+
+#include "Preferences.h"
+
+//#include "NetworkCommunication/UsageReporting.h"
+#include "WPIErrors.h"
+#include "HAL/HAL.hpp"
+
+#include <stdio.h>
+#include <algorithm>
+
+/** The Preferences table name */
+static const char *kTableName = "Preferences";
+
+void Preferences::Listener::ValueChanged(ITable* source, llvm::StringRef key,
+                                         std::shared_ptr<nt::Value> value,
+                                         bool isNew) {}
+void Preferences::Listener::ValueChangedEx(ITable* source, llvm::StringRef key,
+                                           std::shared_ptr<nt::Value> value,
+                                           unsigned int flags) {
+  source->SetPersistent(key);
+}
+
+Preferences::Preferences() : m_table(NetworkTable::GetTable(kTableName)) {
+  m_table->AddTableListenerEx(&m_listener, NT_NOTIFY_NEW | NT_NOTIFY_IMMEDIATE);
+  HALReport(HALUsageReporting::kResourceType_Preferences, 0);
+}
+
+/**
+ * Get the one and only {@link Preferences} object
+ * @return pointer to the {@link Preferences}
+ */
+Preferences *Preferences::GetInstance() {
+  static Preferences instance;
+  return &instance;
+}
+
+/**
+ * Returns a vector of all the keys
+ * @return a vector of the keys
+ */
+std::vector<std::string> Preferences::GetKeys() { return m_table->GetKeys(); }
+
+/**
+ * Returns the string at the given key.  If this table does not have a value
+ * for that position, then the given defaultValue will be returned.
+ * @param key the key
+ * @param defaultValue the value to return if none exists in the table
+ * @return either the value in the table, or the defaultValue
+ */
+std::string Preferences::GetString(llvm::StringRef key,
+                                   llvm::StringRef defaultValue) {
+  return m_table->GetString(key, defaultValue);
+}
+
+/**
+ * Returns the int at the given key.  If this table does not have a value
+ * for that position, then the given defaultValue value will be returned.
+ * @param key the key
+ * @param defaultValue the value to return if none exists in the table
+ * @return either the value in the table, or the defaultValue
+ */
+int Preferences::GetInt(llvm::StringRef key, int defaultValue) {
+  return static_cast<int>(m_table->GetNumber(key, defaultValue));
+}
+
+/**
+ * Returns the double at the given key.  If this table does not have a value
+ * for that position, then the given defaultValue value will be returned.
+ * @param key the key
+ * @param defaultValue the value to return if none exists in the table
+ * @return either the value in the table, or the defaultValue
+ */
+double Preferences::GetDouble(llvm::StringRef key, double defaultValue) {
+  return m_table->GetNumber(key, defaultValue);
+}
+
+/**
+ * Returns the float at the given key.  If this table does not have a value
+ * for that position, then the given defaultValue value will be returned.
+ * @param key the key
+ * @param defaultValue the value to return if none exists in the table
+ * @return either the value in the table, or the defaultValue
+ */
+float Preferences::GetFloat(llvm::StringRef key, float defaultValue) {
+  return static_cast<float>(m_table->GetNumber(key, defaultValue));
+}
+
+/**
+ * Returns the boolean at the given key.  If this table does not have a value
+ * for that position, then the given defaultValue value will be returned.
+ * @param key the key
+ * @param defaultValue the value to return if none exists in the table
+ * @return either the value in the table, or the defaultValue
+ */
+bool Preferences::GetBoolean(llvm::StringRef key, bool defaultValue) {
+  return m_table->GetBoolean(key, defaultValue);
+}
+
+/**
+ * Returns the long (int64_t) at the given key.  If this table does not have a
+ * value
+ * for that position, then the given defaultValue value will be returned.
+ * @param key the key
+ * @param defaultValue the value to return if none exists in the table
+ * @return either the value in the table, or the defaultValue
+ */
+int64_t Preferences::GetLong(llvm::StringRef key, int64_t defaultValue) {
+  return static_cast<int64_t>(m_table->GetNumber(key, defaultValue));
+}
+
+/**
+ * Puts the given string into the preferences table.
+ *
+ * <p>The value may not have quotation marks, nor may the key
+ * have any whitespace nor an equals sign</p>
+ *
+ * @param key the key
+ * @param value the value
+ */
+void Preferences::PutString(llvm::StringRef key, llvm::StringRef value) {
+  m_table->PutString(key, value);
+  m_table->SetPersistent(key);
+}
+
+/**
+ * Puts the given int into the preferences table.
+ *
+ * <p>The key may not have any whitespace nor an equals sign</p>
+ *
+ * @param key the key
+ * @param value the value
+ */
+void Preferences::PutInt(llvm::StringRef key, int value) {
+  m_table->PutNumber(key, value);
+  m_table->SetPersistent(key);
+}
+
+/**
+ * Puts the given double into the preferences table.
+ *
+ * <p>The key may not have any whitespace nor an equals sign</p>
+ *
+ * @param key the key
+ * @param value the value
+ */
+void Preferences::PutDouble(llvm::StringRef key, double value) {
+  m_table->PutNumber(key, value);
+  m_table->SetPersistent(key);
+}
+
+/**
+ * Puts the given float into the preferences table.
+ *
+ * <p>The key may not have any whitespace nor an equals sign</p>
+ *
+ * @param key the key
+ * @param value the value
+ */
+void Preferences::PutFloat(llvm::StringRef key, float value) {
+  m_table->PutNumber(key, value);
+  m_table->SetPersistent(key);
+}
+
+/**
+ * Puts the given boolean into the preferences table.
+ *
+ * <p>The key may not have any whitespace nor an equals sign</p>
+ *
+ * @param key the key
+ * @param value the value
+ */
+void Preferences::PutBoolean(llvm::StringRef key, bool value) {
+  m_table->PutBoolean(key, value);
+  m_table->SetPersistent(key);
+}
+
+/**
+ * Puts the given long (int64_t) into the preferences table.
+ *
+ * <p>The key may not have any whitespace nor an equals sign</p>
+ *
+ * @param key the key
+ * @param value the value
+ */
+void Preferences::PutLong(llvm::StringRef key, int64_t value) {
+  m_table->PutNumber(key, value);
+  m_table->SetPersistent(key);
+}
+
+/**
+ * This function is no longer required, as NetworkTables automatically
+ * saves persistent values (which all Preferences values are) periodically
+ * when running as a server.
+ * @deprecated backwards compatibility shim
+ */
+void Preferences::Save() {}
+
+/**
+ * Returns whether or not there is a key with the given name.
+ * @param key the key
+ * @return if there is a value at the given key
+ */
+bool Preferences::ContainsKey(llvm::StringRef key) {
+  return m_table->ContainsKey(key);
+}
+
+/**
+ * Remove a preference
+ * @param key the key
+ */
+void Preferences::Remove(llvm::StringRef key) {
+  m_table->Delete(key);
+}