Added error LibraryApplet wrapper (#243)

* Implement error applet

nx/include/switch.h

@@ -106,6 +106,7 @@ extern "C" {
 #include "switch/audio/driver.h"
 
 #include "switch/applets/libapplet.h"
+#include "switch/applets/error.h"
 #include "switch/applets/swkbd.h"
 #include "switch/applets/web.h"
 

nx/include/switch/applets/error.h

@@ -0,0 +1,77 @@
+/**
+ * @file error.h
+ * @brief Wrapper for using the error LibraryApplet.
+ * @author StuntHacks
+ * @copyright libnx Authors
+ */
+#pragma once
+#include "../types.h"
+#include "../services/applet.h"
+
+/// Error configuration struct
+typedef struct {
+    u8 custom_text;                   ///< Whether to show a custom error message. If this is false, a default message will be shown.
+    u8 unk[7];
+    u32 module;                       ///< Module code.
+    u32 description;                  ///< Description code.
+    u8 unk2[8];
+    char short_description[0x800];    ///< Short description.
+    char detailed_description[0x800]; ///< Detailed description (displayed when the user clicks,  on "Details").
+} ErrorConfig;
+
+/**
+ * @brief Creates an ErrorConfg struct.
+ * @param c ErrorConfg struct.
+ * @note Sets the following fields: majorCode = 2000, minorCode = 0, customText = false, shortDescription = "", detailedDescription = "".
+ * @warning This applet creates an error report that is logged in the system. Proceed at your own risk!
+ */
+void errorCreate(ErrorConfig* c);
+
+/**
+ * @brief Closes an ErrorConfig struct.
+ * @param c ErrorConfig struct.
+ */
+void errorClose(ErrorConfig* c);
+
+/**
+ * @brief Launches with the specified config.
+ * @param c ErrorConfig struct.
+ */
+void errorShow(ErrorConfig* c);
+
+/**
+ * @brief Sets the error module.
+ * @param c    ErrorConfig struct.
+ * @param code Code.
+ */
+void errorConfigSetModule(ErrorConfig* c, u32 code);
+
+/**
+ * @brief Sets the error description.
+ * @param c    ErrorConfig struct.
+ * @param code Code.
+ */
+void errorConfigSetDescription(ErrorConfig* c, u32 code);
+
+/**
+ * @brief Sets whether to use a custom error message.
+ * @param c           ErrorConfig struct.
+ * @param custom_text Whether to use a custom message.
+ */
+void errorConfigSetCustomText(ErrorConfig* c, bool custom_text);
+
+/**
+ * @brief Sets the short description.
+ * @param c   ErrorConfig struct.
+ * @param str Description.
+ */
+void errorConfigSetShortDescription(ErrorConfig* c, const char* str);
+
+/**
+ * @brief Sets the detailed description.
+ * @param c   ErrorConfig struct.
+ * @param str Description.
+ *
+ * This gets displayed when the user clicks on "Details".
+ */
+void errorConfigSetDetailedDescription(ErrorConfig* c, const char* str);

nx/source/applets/error.c

@@ -0,0 +1,51 @@
+#include <malloc.h>
+#include <string.h>
+#include "types.h"
+#include "result.h"
+#include "services/applet.h"
+#include "applets/libapplet.h"
+#include "applets/error.h"
+
+void errorCreate(ErrorConfig* c) {
+    memset(c, 0, sizeof(ErrorConfig));
+    c->custom_text = false;
+    c->module = 2000;
+}
+
+void errorClose(ErrorConfig* c) {
+    memset(c, 0, sizeof(ErrorConfig));
+}
+
+void errorShow(ErrorConfig* c) {
+    AppletHolder err;
+    LibAppletArgs errArgs;
+
+    appletCreateLibraryApplet(&err, AppletId_error, LibAppletMode_AllForeground);
+    libappletArgsCreate(&errArgs, 1);
+    libappletArgsPush(&errArgs, &err);
+    libappletPushInData(&err, c, sizeof(ErrorConfig));
+
+    appletHolderStart(&err);
+    appletHolderJoin(&err);
+    appletHolderClose(&err);
+}
+
+void errorConfigSetModule(ErrorConfig* c, u32 code) {
+    c->module = code;
+}
+
+void errorConfigSetDescription(ErrorConfig* c, u32 code) {
+    c->description = code;
+}
+
+void errorConfigSetCustomText(ErrorConfig* c, bool custom_text) {
+    c->custom_text = custom_text;
+}
+
+void errorConfigSetShortDescription(ErrorConfig* c, const char* str) {
+    strncpy(c->short_description, str, sizeof(c->short_description) - 1);
+}
+
+void errorConfigSetDetailedDescription(ErrorConfig* c, const char* str) {
+    strncpy(c->detailed_description, str, sizeof(c->detailed_description) - 1);
+}