int bash_loop()
{
struct sigaction act;
act.sa_sigaction = &signal_handler;
act.sa_flags = SA_SIGINFO;
sigemptyset(&act.sa_mask);
sigaddset(&act.sa_mask, SIGINT);
sigaddset(&act.sa_mask, SIGCHLD);
sigaction(SIGINT, &act, 0);
sigaction(SIGCHLD, &act, 0);
char buff[BUFF_FULLSIZE];
size_t buffer_size;
char *** args = NULL;
size_t args_size = 0;
while(1) {
write(0, "$ ", 2);
char * command = NULL;
if ((command = bash_read(buff, &buffer_size)) == NULL && buffer_size == 0)
break;
if (command == NULL)
continue;
args = bash_parse(command, &args_size);
free(command);
bash_execute(buff, &buffer_size, args, args_size);
}
return 0;
}
/* Linhas de codigo do projeto elua, shell.c */
static void processa_cmd(void) {
char buf[128];
int i, j;
char c;
char *p, *temp;
int argc;
char *argv[4];
bash_read(buf, sizeof (buf) / sizeof (char));
if (strlen(buf) == 0)
return;
if (buf[strlen(buf) - 1] != '\n')
strcat(buf, "\n");
/* converte \r \n e \t em ' ' */
p = buf;
while (*p) {
if (*p == '\r' || *p == '\n' || *p == '\t')
*p = ' ';
p++;
}
for (i = 0, j = 0, c = '\0'; i < strlen(buf); i++)
if ((buf[i] == '\'') || (buf[i] == '"')) {
if (!j) {
j = 1;
c = buf[i];
} else {
if (buf[i] == c) {
j = 0;
c = '\0';
}
}
} else if ((buf[i] == ' ') && j)
buf[i] = '\x07';
if (j) {
usb_print("\r\nstring invalida");
return;
}
/* retira os espacos desnecessarios */
p = strchr(buf, ' ');
while (p) {
temp = p + 1;
while (*temp && *temp == ' ')
memmove(temp, temp + 1, strlen(temp));
p = strchr(p + 1, ' ');
}
if (!strcmp(buf, " "))
return;
p = buf;
if (*p == ' ')
p++;
/* adiciona o espaco */
if (p[strlen(p) - 1] != ' ')
strcat(p, " ");
for (argc = 0; argc < 4; argc++)
argv[argc] = NULL;
argc = 0;
/* salva argc e argv */
while ((temp = strchr(p, ' ')) != NULL) {
*temp = 0;
if (argc == 4) {
usb_print("\r\nerro: muitos argumentos");
argc = -1;
return;
}
argv[argc++] = p;
p = temp + 1;
}
if (argc == -1)
return;
for (i = 0; i < argc; i++) {
p = argv[i];
for (j = 0; j < strlen(argv[i]); j++) {
if (p[j] == '\x07')
argv[i][j] = ' ';
}
if ((p[0] == '\'' || p[0] == '"') && (p[0] == p[strlen(p) - 1])) {
argv[i] = p + 1;
p[strlen(p) - 1] = '\0';
}
}
// for(i = 0; i < argc; i ++)
// printf("\r\nargv[%u] = %s", i, argv[i]);
executa_cmd(argc, argv);
}
