Pliki_SOP/Microshell/microshell.c

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

const int max = 1000;

int cut(char **argv, char *command){
	int i = 0, w = 0, x = 0;
	char argument[100];
	while (1){
		if(command[i] == 10){
			argv[w] = NULL;
			break;
		}
		else if (command[i] == 32){
			i+=1;
			x=0;
			continue;
		}
		else{
			while(command[i] != 32 && command[i]!=10){
				argument[x]=command[i];
				x+=1;
				i+=1;
			}
			argument[x] = '\0';
			argv[w]=malloc(x+1 * sizeof(char));
			strcpy(argv[w], argument);
			w+=1;
		}
	}
	return w+1;
}

int main (){
	int ile, i;
	while (1){
		char* argv[100];
		char komenda[max], directory[max];
    	if (getcwd(directory, sizeof(directory)) == NULL){
			perror("getcwd() error");
			return 1;
		}
		printf("[%s]$ ", directory);
		fgets(komenda, max, stdin);
		ile = cut(argv, komenda);
		printf("\n%s\n\n", argv[0]);
		if (argv[0]==NULL)
			continue;
		else if (strcmp(argv[0], "exit") == 0)
			exit(0);
		else
			if (fork() == 0)
				execvp(argv[0], argv);
			else
				wait(NULL);

		for(i=0; i<ile; i++)
			free(argv[i]);
	}
	return 0;
}