TactilityC additions (#287)

New TactilityC implementations for:
- WiFi
- GPS
- Preferences
- Timezone

Also includes:
- Some fixes to enums/naming
- Cleanup elsewhere

TactilityC/Source/tt_preferences.cpp

@@ -0,0 +1,53 @@
+#include "tt_preferences.h"
+#include <Tactility/Preferences.h>
+#include <cstring>
+
+#define HANDLE_AS_PREFERENCES(handle) ((tt::Preferences*)(handle))
+
+extern "C" {
+
+PreferencesHandle tt_preferences_alloc(const char* identifier) {
+    return new tt::Preferences(identifier);
+}
+
+void tt_preferences_free(PreferencesHandle handle) {
+    delete HANDLE_AS_PREFERENCES(handle);
+}
+
+bool tt_preferences_opt_bool(PreferencesHandle handle, const char* key, bool* out) {
+    return HANDLE_AS_PREFERENCES(handle)->optBool(key, *out);
+}
+
+bool tt_preferences_opt_int32(PreferencesHandle handle, const char* key, int32_t* out) {
+    return HANDLE_AS_PREFERENCES(handle)->optInt32(key, *out);
+}
+bool tt_preferences_opt_string(PreferencesHandle handle, const char* key, char* out, uint32_t outSize) {
+    std::string out_string;
+
+    if (!HANDLE_AS_PREFERENCES(handle)->optString(key, out_string)) {
+        return false;
+    }
+
+    if (out_string.length() >= outSize) {
+        // Need 1 byte to add 0 at the end
+        return false;
+    }
+
+    memcpy(out, out_string.c_str(), out_string.length());
+    out[out_string.length()] = 0x00;
+    return true;
+}
+
+void tt_preferences_put_bool(PreferencesHandle handle, const char* key, bool value) {
+    HANDLE_AS_PREFERENCES(handle)->putBool(key, value);
+}
+
+void tt_preferences_put_int32(PreferencesHandle handle, const char* key, int32_t value) {
+    HANDLE_AS_PREFERENCES(handle)->putInt32(key, value);
+}
+
+void tt_preferences_put_string(PreferencesHandle handle, const char* key, const char* value) {
+    HANDLE_AS_PREFERENCES(handle)->putString(key, value);
+}
+
+}