cmd.h


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#ifndef CMD_H
#define CMD_H

#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

typedef enum {
    CMD_TYPE_NORMAL,
    CMD_TYPE_PIPE,
    CMD_TYPE_AND,
    CMD_TYPE_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
    struct Command *left;  // a pointer to the left sub-command
    struct Command *right; // a pointer to the right sub-command
    char *redirect_in;  // the file name for input redirection, or NULL if there
                        // is no input redirection
    char *redirect_out; // the file name for output redirection, or NULL if
                        // there is no output redirection
    char *append_out; // the file name for output appending, or NULL if there is
                      // no output appending
    // add more fields as needed
} Command;

#endif