cmd.h


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#ifndef CMD_H
#define CMD_H

#include <fcntl.h>
#include <pwd.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

typedef enum {
    CMD_NORMAL,
    CMD_PIPE,
    CMD_AND,
    CMD_OR,
    // add more command types as needed
} CommandType;

typedef struct Command {
    CommandType type; // the type of the command
    char **args;      // an array of strings for the arguments of the command
    int argc;
    struct Command *left;  // a pointer to the left sub-command
    struct Command *right; // a pointer to the right sub-command
    int redirectFD[3];
    char *redirectFile[3];
    bool background;
} Command;

extern char hostname[100];
extern char *username;
extern char pwd[100];

void showPrompt();
void argInsert(struct Command *cmd, char *s, bool isStr);

Command *newCmd();
void freeCmd(Command *cmd);
int runCmd(Command *cmd);
int runNormalCmd(Command *cmd);
int runPipeCmd(Command *cmd);
int runAndOrCmd(Command *cmd);
void redirect(Command *cur);

#endif