1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
|
void executePipe(char * commande[]) {
//int nbPipe = nbCaracteresSpeciaux(commande);
int ** tabPipe = malloc(2 * sizeof (int*));
int i = 0;
for (i = 0; i < 2; i++) {
tabPipe[i] = (int*) malloc(2 * sizeof (int));
pipe(tabPipe[i]);
}
//char * tabComSansPipe1[2 + 1];
//comSansPipe(commande, tabComSansPipe1);
//char * tabComSansPipe[] = {tabComSansPipe1[0], tabComSansPipe1[1], (char*)NULL};
char * tabComSansPipe[] = {"ls", "more", "wc", NULL};
int cptCom = 0; //Compteur de commande
int cptPipe = 0; //Compteur de pipe
//int nbCom = nbElementsCommande(tabComSansPipe);
switch (fork()) {
case -1:
perror("Erreur fork");
break;
case 0:
for (cptCom = 0; cptCom < 3; cptCom++) {
printf("On passe la %d\n", cptPipe);
switch (fork()) {
case -1:
printf("Erreur Fork\n");
break;
case 0:
if (cptCom == 0) {//La commande est au début
//On utilise le 1er Pipe sur lequel on va écrire
fprintf(stdout, "%s\n", tabComSansPipe[cptCom]);
close(tabPipe[cptPipe][0]);
dup2(tabPipe[cptPipe][1], 1);
close(tabPipe[cptPipe][1]);
execlp(tabComSansPipe[cptCom], tabComSansPipe[cptCom], (char*) NULL);
} else if (cptCom > 0 && tabComSansPipe[cptCom + 1] != NULL) {//On est au milieu
//On doit lire sur le pipe-1 et ecrire sur le prochain pipe
fprintf(stdout, "%s\n", tabComSansPipe[cptCom]);
close(tabPipe[cptPipe - 1][1]);
dup2(tabPipe[cptPipe - 1][0], 0);
close(tabPipe[cptPipe - 1][0]);
close(tabPipe[cptPipe][0]);
dup2(tabPipe[cptPipe][1], 1);
close(tabPipe[cptPipe][1]);
} else if (tabComSansPipe[cptCom + 1] == NULL) {//On est à la fin
fprintf(stdout, "%s\n", tabComSansPipe[cptCom]);
close(tabPipe[cptPipe - 1][1]);
dup2(tabPipe[cptPipe - 1][0], 0);
close(tabPipe[cptPipe - 1][0]);
}
fprintf(stdout, "On va executer %s\n", tabComSansPipe[cptCom]);
execlp(tabComSansPipe[cptCom], tabComSansPipe[cptCom], (char*) NULL);
exit(0);
break;
default:
wait(NULL);
cptPipe++;
}
}
exit(0);
break;
default:
wait(NULL);
printf("FIINNN\n");
}
free(tabPipe);
} |
Partager