Adjusted GetHomeDir() and fixed cd command

include/Integrated.h

@@ -5,7 +5,7 @@
 
 const char* GetHomeDir(void);
 void ioRedirection(CommandStruct *command);
-void IntegratedCheck(CommandStruct* command);
+int IntegratedCheck(CommandStruct* command);
 void GetInput(char* inputString);
 void append(char *input, char *file);
 void input(char *command);

src/Common.c

@@ -5,7 +5,7 @@
 void ResetCommandStruct(CommandStruct* command)
 {
     for (int i = 0; i < command->argc; i++)
-        command->argv[i] = "";
+        command->argv[i] = NULL;
     command->argc = 0;
     return;
 }

src/Integrated.c

@@ -14,20 +14,25 @@
 const char *GetHomeDir(void)
 {
 	char *homeDir = (getpwuid(getuid()))->pw_dir;
-	strcat(homeDir, "/.pishrc");
 	return homeDir;
 }
 
 // Checks for commands that are built into Pish
-void IntegratedCheck(CommandStruct *command)
+int IntegratedCheck(CommandStruct *command)
 {
 	if (strcmp(command->argv[0], "exit") == 0)
 		exit(0);
 	// If there is an argument, change to argument location
 	// Else, change to home directory
 	if (command->argv[0][0] == 'c' && command->argv[0][1] == 'd')
-		;
+	{
-	return;
+		if (command->argv[1] != NULL)
+			chdir(command->argv[1]);
+		if (command->argv[1] == NULL)
+			chdir(GetHomeDir());
+		return 1;
+	}
+	return 0;
 }
 
 // Prints a prompt and then reads a command from the terminal
@@ -67,7 +72,9 @@ void ReadPishrc(CommandStruct *command, char *inputString)
 	char buffer[1];
 	int forkID;
 	int *argc = &(command->argc);
-	int fd = open(GetHomeDir(), O_RDONLY | O_CREAT);
+	char* pishLocation = GetHomeDir();
+	strcat(pishLocation, "/.pishrc");
+	int fd = open(pishLocation, O_RDONLY | O_CREAT);
 	assert(fd > -1);
 	while (read(fd, buffer, 1) > 0)
 	{

src/Pish.c

@@ -21,7 +21,8 @@ void Pish(void)
         strcpy(inputString, "");    // Clean inputString
         GetInput(inputString);
         ParseInput(inputString, command);
-	    IntegratedCheck(command);
+	    if (IntegratedCheck(command))
+            continue;
         forkPID = fork();
         // Child
         if (forkPID == 0)