dish/builtin.c

61 lines
985 B
C

/*
* @Author: 1ridic
* @Date: 2022-09-18 14:16:19
* @Last Modified by: 1ridic
* @Last Modified time: 2022-09-18 14:52:17
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
int dish_cd(char **args);
int dish_help(char **args);
int dish_exit(char **args);
int dish_clear(char **args);
char* builtin_cmd[] = {
"cd",
"help",
"exit",
"clear"
};
int (*builtin_func[]) (char **) = {
&dish_cd,
&dish_help,
&dish_exit,
&dish_clear
};
int dish_cd(char **args)
{
if (args[1] == NULL) {
fprintf(stderr, "dish: expected argument to \"cd\"\n");
} else {
if (chdir(args[1]) != 0) {
perror("dish");
}
}
return 0;
}
int dish_help(char **args)
{
fprintf(stdout, "Yet another Shell with C.\n");
return 0;
}
int dish_exit(char **args)
{
exit(EXIT_SUCCESS);
}
int getBuiltinNum() {
return sizeof(builtin_cmd) / sizeof(char *);
}
int dish_clear(char **args){
fprintf(stdout,"\033[H\033[J");
return 0;
}