t_shell *init_struct(char **env)
{
t_shell *sh;
if (!(sh = (t_shell *)malloc(sizeof(t_shell))))
return (NULL);
sh->env = init_env(env);
deal_with_file(sh);
sh->hist = sh->hist->next;
sh->hist = create_hist();
sh->return_val = 0;
push_hist(&sh->head, sh->hist);
return (sh);
}
/*parseinput:
Shell Input Parser, gets instructions
Returns: 0 if exiting the shell, 1 if returning to shell
*/
int parseinput(char *buf)
{
if (strcmp(buf, "\n") == 0)
{
return 1;
}
else if (strcmp(buf, "exit\n") == 0)
{
return 0;
}
else
{
push_hist(buf);
char *cmd;
char *arguments[22]; //Creates the argv array
arguments[21] = NULL; //Initializes the 21st argument to be NULL for error checking
char *pch;
int i = 1;
cmd = strtok (buf," \n");
arguments[0] = cmd;
/*Build the arguments array*/
do {
pch = strtok (NULL, " \n ");
arguments[i] = pch;
i++;
} while ((pch != NULL) && (i < 22));
/*If there are over 20 arguments, then 21st argument is not NULL, throw error and return to shell*/
if (arguments[21] != NULL)
{
printf("error: Too many arguments.\n");
return 1;
}
/*Determine which instruction was called and call appropriate function*/
if (strcmp(cmd, "path") == 0)
{
// When there isn't any arguments then print the PATH
if (arguments[1] == NULL)
{
printPath();
}
else if (arguments[2] == NULL) // To handle case of null argument after path +
{
printf("error: No path input.\n");
}
else if (strcmp(arguments[1], "+") == 0)
{
addPath(arguments[2]);
}
else if (strcmp(arguments[1], "-") == 0)
{
removePath(arguments[2]);
}
// When there's any arguments other than + and -, print the PATH
else
{
printPath();
}
}
else if (strcmp(cmd, "cd") == 0)
{
cd(arguments);
}
else if (strcmp(cmd, "history") == 0)
{
print_hist();
}
else if (strncmp(cmd, "!", 1) == 0)
{
if ((strlen(cmd) > 4)|(strlen(cmd) < 1))
{
printf("Command not found.\n");
}
else
{
int n = n_convert(cmd);
if (n != 0)
{
call_hist(n);
}
else
{
printf("Command not found.\n");
}
}
}
else
{
open (cmd, arguments);
}
}
return 1;
}
