main.h

#ifndef MAIN_H_
#define MAIN_H_

/* library headers */
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <signal.h>
/**
 * struct list_s - singly linked list
 * @str: string - (malloc'ed string)
 * @len: length of the string
 * @next: points to the next node
 *
 * Description: singly linked list node structure
 */
typedef struct list_s
{
	char *str;
	size_t len;
	struct list_s *next;
} list_t;
/**
 * struct builtInCmd_s - data structure for handling calls to builtin functions
 * @cmdName: the name of the function
 * @builtInCmd: pointer to function that takes no argument and returns an int
 */
typedef struct builtInCmd_s
{
	char *cmdName;
	int (*builtInCmd)(void);
} builtInCmd_t;
/**
 * struct cmd_s - data structure for returning command location info
 * @cmd: the name of the command
 * @locationFlag: an integer that representing the type of command (builtin or
 * binary).
 */
typedef struct cmd_s
{
	char *cmd;
	int locationFlag;
} cmd_t;
/**
 * struct format_handler - struct token
 * @format_char: the format token
 * @handler_func: the function associated
 */
typedef struct format_handler
{
	char *format_char;
	int (*handler_func)(va_list);
} format_handler;

/* macros */
#define BUFSIZE 1024
#define ERR404 404 /* not found */

/* global variable */
extern char **environ;

/* data structure for singly-linked list */



/* functions */
void *_realloc(void *ptr, unsigned int old_size, unsigned int new_size);
ssize_t _getline(char **lineptr, size_t *n, int fd);
char *_prompt();
char **splitLine(char *str);
size_t list_len(const list_t *h);
list_t *add_node_end(list_t **head, const char *str);
void free_list(list_t *head);
int processExecute(char *cmdPath, char **line_arr);
size_t print_list(const list_t *h);
void freeArrayOfPtr(char **arr);
char *_readLine();
ssize_t isEmptyString(char *str, char *delimiter);
char **createArrayOfLineTokens(list_t *h);
list_t *createListOfLineTokens(char *str, char *delim);
char **parseLine(char *str, char *delimiter);
cmd_t *searchCmd(char *commandName);
int (*isBuiltInCmd(char *commandName))(void);
char *searchPath(char *commandName);
char *locateCmdDirPath(list_t *h, char *cmdName);
list_t *createPathDirList(void);
char *_getenv(char *envVar);
int executeCmd(cmd_t *commandData, char **cmdLineArr);
int runNonInteractive(char *prog);
int runInteractive(char *prog);
int print_env(void);
int exit_prog(void);
void cleanExit(cmd_t *cmdData, char **cmdArr);
int _putchar(int c);

#endif /* MAIN_H_ */