~ fixed clang-tidy errors

src/Color.cpp

@@ -1,7 +1,7 @@
 
 #include "Color.h"
 
-Color::Color(unsigned char red, unsigned char green, unsigned char blue)
+Color::Color(unsigned char red, unsigned char green, unsigned char blue) noexcept
     : red(red), green(green), blue(blue){
 
 }

src/Color.h

@@ -15,7 +15,7 @@ private:
     unsigned char blue;
 
 public:
-    Color(unsigned char red, unsigned char green, unsigned char blue);
+    Color(unsigned char red, unsigned char green, unsigned char blue) noexcept;
 
     unsigned char getRed();
     unsigned char getGreen();

src/FontType.cpp

@@ -1,20 +1,25 @@
 #include "FontType.h"
 
 
-FontType::FontType(std::string name, int height, int width) {
+FontType::FontType(int id, std::string name, int height, int width) noexcept {
+    this->id = id;
     this->name = std::move(name);
     this->height = height;
     this->width = width;
 }
 
-std::string FontType::getName() {
+int FontType::getId() const{
+    return id;
+}
+
+std::string FontType::getName() const{
     return name;
 }
 
-int FontType::getHeight() {
+int FontType::getHeight() const{
     return height;
 }
 
-int FontType::getWidth() {
+int FontType::getWidth() const{
     return width;
 }

src/FontType.h

@@ -1,25 +1,27 @@
-#include <utility>
-
 #ifndef LIBRARY_FONT_H
+
 #define LIBRARY_FONT_H
 
 #include <string>
+#include <utility>
 
 class FontType {
 private:
+    int id;
     std::string name;
     int height;
     int width;
 
 public:
-    FontType(std::string name, int height, int width);
-    std::string getName();
-    int getHeight();
-    int getWidth();
+    FontType(int id, std::string name, int height, int width) noexcept;
+    int getId() const;
+    std::string getName() const;
+    int getHeight() const;
+    int getWidth() const;
 
 };
 
 
-const static FontType font_1 = FontType("DummyFont", 10, 5);
+const static FontType font_1 = FontType(1, "DummyFont", 10, 5);
 
 #endif

src/KeyCode.cpp

@@ -1,9 +1,9 @@
 
 #include "KeyCode.h"
 
-KeyCode::KeyCode(int value) : value(value) {}
+KeyCode::KeyCode(int16_t value) noexcept : value(value) {}
 
-int KeyCode::getValue() {
+int16_t KeyCode::getValue() {
     return value;
 }
 

src/KeyCode.h

@@ -1,12 +1,14 @@
 #ifndef LIBRARY_KEYCODE_H
 #define LIBRARY_KEYCODE_H
 
+#include <sys/types.h>
+
 class KeyCode {
 private:
-    int value;
+    int16_t value;
 public:
-    explicit KeyCode(int value);
-    int getValue();
+    explicit KeyCode(int16_t value) noexcept;
+    int16_t getValue();
 };
 
 const static KeyCode Backspace = KeyCode(8);

src/SharedMemoryAccess.cpp

@@ -1,24 +1,24 @@
 //
 // Created by Cigerxwin  Chaker on 05.11.19.
 //
-#include <iostream>
-#include <sys/types.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <sys/sem.h>
-#include <unistd.h>
+#include <cstdio>
+#include <cstdlib>
 #include <cstring>
+#include <iostream>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
 
-#include "internal.h"
 #include "SharedMemoryAccess.h"  /* header is important for the shmID. name could be different. maybe not needed cause: (shmget(memory_access_key, NULL, 0)) */
+#include "internal.h"
 
-#define PERM 0666      /* Zugriffsrechte */
-#define LOCK       -1
-#define UNLOCK      1
-#define SEM_KEY  123458L
+#define PERM 0666      /* access rights */
+#define LOCK       (-1)
+#define UNLOCK      (1)
+#define SEM_KEY  (123458L)
 
 //int memoryAccessKey; /* var type is int. but could be another type. */ //TODO: look after type in sharedmemory group
 int semId;
@@ -26,29 +26,30 @@ struct sembuf semaphore;
 
 std::vector<char> localSharedMemory;
 
-int initSemaphore () {
+int initSemaphore() {
     /* Testen, ob das Semaphor bereits existiert */
-    semId = semget (SEM_KEY, 0, IPC_PRIVATE);
+    semId = semget(SEM_KEY, 0, IPC_PRIVATE);
     if (semId < 0) {
         /* ... existiert noch nicht, also anlegen        */
         /* Alle Zugriffsrechte der Dateikreierungsmaske */
         /* erlauben                                     */
         umask(0);
-        semId = semget (SEM_KEY, 1, IPC_CREAT | IPC_EXCL | PERM);
+        semId = semget(SEM_KEY, 1, IPC_CREAT | IPC_EXCL | PERM);
         if (semId < 0) {
             return -1;
         }
         /* Semaphor mit 1 initialisieren */
-        if (semctl (semId, 0, SETVAL, (int) 1) == -1)
+        if (semctl(semId, 0, SETVAL, 1) == -1){
             return -1;
+        }
     }
     return 1;
 }
 
-int semaphoreOperation (int op) {
-    semaphore.sem_op = (short)op;
+int semaphoreOperation(int op) {
+    semaphore.sem_op = static_cast<int16_t>(op);
     semaphore.sem_flg = SEM_UNDO;
-    if( semop (semId, &semaphore, 1) == -1) {
+    if (semop(semId, &semaphore, 1) == -1) {
         perror(" semop ");
         return -1;
     }
@@ -56,13 +57,10 @@ int semaphoreOperation (int op) {
 }
 
 void writeSharedMemory(char *data, int size, int offset) {
-    int shmId = shmget(impl.sharedMemoryKey, NULL, 0); // dont init just get the ID if already existing.
-    if(shmId < 0 ) {
-        return;
-        /* we could return -1, not sure if it will be useful to continue after there is no shm allocated for any reason*/
-    } else {
+    int shmId = shmget(impl.sharedMemoryKey, 0, 0); // dont init just get the ID if already existing.
+    if (shmId >= 0) {
         std::cout << "writing" << std::endl;
-        char *shm_pointer = (char *) shmat(shmId, NULL, 0);
+        auto *shm_pointer = reinterpret_cast<char *>(shmat(shmId, nullptr, 0));
         semaphoreOperation(LOCK);
         memcpy(shm_pointer + offset, data, size);
         shmdt(shm_pointer);                                     //close shm_pointer
@@ -72,20 +70,17 @@ void writeSharedMemory(char *data, int size, int offset) {
 }
 
 void getSharedMemory(char *address, int size, int offset) {
-    int shmId = shmget(impl.sharedMemoryKey, NULL, 0);
-    if(shmId < 0) {
-        return;
-    } else {
-        char *shm_pointer = (char *) shmat(shmId, NULL, 0);
+    int shmId = shmget(impl.sharedMemoryKey, 0, 0);
+    if (shmId >= 0) {
+        auto *shm_pointer = reinterpret_cast<char *>(shmat(shmId, nullptr, 0));
         semaphoreOperation(LOCK);
         memcpy(address, shm_pointer + offset, size);
         shmdt(shm_pointer);                             //close shm_pointer
         semaphoreOperation(UNLOCK);
-        return;
     }
 }
 
-char* getSharedMemory() {
+char *getSharedMemory() {
     /*
     int shmId = shmget(impl.sharedMemoryKey, NULL, 0);
     if(shmId < 0) {
@@ -97,7 +92,7 @@ char* getSharedMemory() {
     */
 
     //using a local buffer for shared memory testing
-    if(localSharedMemory.empty()){
+    if (localSharedMemory.empty()) {
         initSemaphore();
         localSharedMemory.resize(impl.sharedMemorySize * 1024);
     }

src/SharedMemoryAccess.h

@@ -37,6 +37,6 @@ void unlockSharedMemory();
  * @param size of data
  * @param offset where the data is written on the shared memory
  */
-void writeSharedMemory(char *date, int size, int offset);
+void writeSharedMemory(char *data, int size, int offset);
 
 #endif //LIBRARY_SHAREDMEMORYACCESSS_H

src/internal.cpp

@@ -2,8 +2,8 @@
 #include "SharedMemoryAccess.h"
 #include "vkvm.h"
 
-#include <sys/shm.h>
 #include <csignal>
+#include <sys/shm.h>
 
 Impl impl;
 
@@ -16,11 +16,11 @@ void onSignal(int signalNumber, void(*callback)(int)) {
 }
 
 InterruptEntry *getInterrupTable(){
-    return (InterruptEntry*)(getSharedMemory() + sizeof(Registers) + impl.reservedSize);
+    return reinterpret_cast<InterruptEntry*>(getSharedMemory() + sizeof(Registers) + impl.reservedSize);
 }
 
 Registers *getRegisters(){
-    return (Registers*)getSharedMemory();
+    return reinterpret_cast<Registers*>(getSharedMemory());
 }
 
 char *getTextArea(){
@@ -68,5 +68,11 @@ void setMousePosition(int x, int y) {
 }
 
 void buttonPressed(KeyCode keyCode) {
-    //TODO
+    lockSharedMemory();
+    auto reg = getRegisters();
+    if(reg->keyboardBuffer_index_write == sizeof(reg->keyboardBuffer)){
+        reg->keyboardBuffer_index_write = 0;
+    }
+    reg->keyboardBuffer[reg->keyboardBuffer_index_write++] = keyCode.getValue();
+    unlockSharedMemory();
 }

src/internal.h

@@ -32,9 +32,9 @@ struct Registers {
     int textMode_font_height;
     int mouse_pos_x;
     int mouse_pos_y;
-    char keyboardBuffer[16];
-    int keyboardBuffer_index_w;
-    int keyboardBuffer_index_r;
+    short keyboardBuffer[16];
+    int keyboardBuffer_index_write;
+    int keyboardBuffer_index_read;
 };
 
 struct InterruptEntry {

src/log.cpp

@@ -8,7 +8,7 @@
 #include <iostream>
 
 //converts the level to a string of the level
-const char *getLevelName(LogLevel level){
+auto getLevelName(LogLevel level){
     switch(level){
         case LogLevel::DEBUG:
             return "DEBUG";
@@ -26,7 +26,7 @@ const char *getLevelName(LogLevel level){
 }
 
 //converts the level to a ansi color code
-const char *getLevelColor(LogLevel level){
+auto getLevelColor(LogLevel level){
     switch(level){
         case LogLevel::DEBUG:
             return "0;37";
@@ -72,7 +72,7 @@ void logTime(){
 void log(const std::string &msg, LogLevel level) {
     if(level >= logLevel) {
         std::string levelName = getLevelName(level);
-        int maxLevelNameLength = 8;
+        const int maxLevelNameLength = 8;
 
         //time
         std::cout << "[";
@@ -92,7 +92,8 @@ void log(const std::string &msg, LogLevel level) {
             if(c == '\n'){
                 //intend newlines so that they align with the start of the message
                 std::cout << "\n";
-                for(int i = 0; i < 22;i++){
+                const int paddingSize = 22;
+                for(int i = 0; i < paddingSize;i++){
                     std::cout << " ";
                 }
             }else{

src/vkvm.cpp

@@ -1,14 +1,18 @@
-#include "vkvm.h"
-#include "internal.h"
 #include "SharedMemoryAccess.h"
+#include "internal.h"
+#include "vkvm.h"
 
-#include <unistd.h>
 #include <csignal>
+#include <unistd.h>
 
 void initialize(int pid) {
     impl.sharedMemoryPid = pid;
-    impl.sharedMemoryKey = 12345;
-    impl.sharedMemorySize = 8000;
+
+    const int sharedMemoryKey = 12345;
+    impl.sharedMemoryKey = sharedMemoryKey;
+
+    const int sharedMemorySize = 8000;
+    impl.sharedMemorySize = sharedMemorySize;
 
     //set default values
     setCharactersPerRow(60);
@@ -23,7 +27,7 @@ void initialize(int pid) {
     setTimerInterruptInterval(10);
 }
 
-bool registerEvent(EventType type, std::function<void()> handler) {
+bool registerEvent(EventType type, const std::function<void()> &handler) {
     int signum = SIGUSR1 + impl.eventTable.size();
     auto ivt = getInterrupTable();
 
@@ -55,10 +59,10 @@ bool setPixel(int x, int y, Color color) {
 }
 
 Color getPixel(int x, int y) {
-    //TODO: other than RGB colores
+    //TODO(julian): other than RGB colores
     //only RGB colores for now
-    unsigned char *ptr = (unsigned char *)getPixelArea() + (y * getWidth() + x) * 3;
-    return Color(ptr[0], ptr[1], ptr[2]);
+    unsigned char *ptr = reinterpret_cast<unsigned char *>(getPixelArea()) + (y * getWidth() + x) * 3;
+    return {ptr[0], ptr[1], ptr[2]};
 }
 
 bool setText(std::string text) {
@@ -82,11 +86,11 @@ std::string getText() {
 }
 
 LayoutVersion getLayoutVersion() {
-    return (LayoutVersion)getRegisters()->layout_version;
+    return static_cast<LayoutVersion>(getRegisters()->layout_version);
 }
 
 void reset() {
-    //TODO
+    //TODO(julian): reset
 }
 
 int getWidth() {
@@ -168,14 +172,14 @@ int getCharactersPerColumn() {
 }
 
 FontType getFont() {
-    //TODO
+    //TODO(julian): get font properly
     return font_1;
 }
 
-void setFont(FontType newValue) {
-    //TODO
+void setFont(const FontType &newValue) {
+    //TODO(julian): setFont properly
     lockSharedMemory();
-    getRegisters()->textMode_font = 0;
+    getRegisters()->textMode_font = newValue.getId();
     unlockSharedMemory();
 }
 
@@ -184,6 +188,6 @@ std::pair<int, int> getMousePosition() {
 }
 
 KeyCode getLastPressedKey() {
-    //TODO
+    //TODO(julian): get key properly
     return KeyCode(0);
 }

src/vkvm.h

@@ -1,14 +1,14 @@
 #ifndef LIBRARY_VKVM_H
 #define LIBRARY_VKVM_H
 
-#include <string>
-#include <functional>
 #include "Color.h"
 #include "EventType.h"
 #include "GraphicMode.h"
 #include "FontType.h"
 #include "KeyCode.h"
 #include "LayoutVersion.h"
+#include <functional>
+#include <string>
 
 /**
  * @since 0.1.0
@@ -184,7 +184,7 @@ FontType getFont();
  * set text mode font.
  * @param newValue new text mode font.
  */
-void setFont(FontType newValue);
+void setFont(const FontType &newValue);
 
 /**
  * get current mouse position

test/public_test.cpp

@@ -2,7 +2,9 @@
 #include "../src/vkvm.h"
 
 TEST_CASE("add works") {
+    initialize(0);
+    setText("Hello World");
     SECTION("equals") {
-        REQUIRE(getText() == "Hallo Welt");
+        REQUIRE(getText() == "Hello World");
     }
 }