static void
file_init(struct file *f, const char *filename)
{
struct varbuf usefilename = VARBUF_INIT;
varbuf_add_str(&usefilename, instdir);
varbuf_add_str(&usefilename, filename);
varbuf_end_str(&usefilename);
f->name = varbuf_detach(&usefilename);
f->stat_state = FILE_STAT_INVALID;
}
static void
test_varbuf_detach(void)
{
struct varbuf vb;
char *str;
varbuf_init(&vb, 0);
varbuf_add_buf(&vb, "1234567890", 10);
str = varbuf_detach(&vb);
test_mem(str, ==, "1234567890", 10);
test_pass(vb.used == 0);
test_pass(vb.size == 0);
test_pass(vb.buf == NULL);
free(str);
}
char *
get_force_string(void)
{
const struct forceinfo *fip;
struct varbuf vb = VARBUF_INIT;
for (fip = forceinfos; fip->name; fip++) {
if ((enum force_flags)fip->flag == FORCE_ALL ||
(fip->flag & force_mask) != fip->flag ||
!in_force(fip->flag))
continue;
if (vb.used)
varbuf_add_char(&vb, ',');
varbuf_add_str(&vb, fip->name);
}
varbuf_end_str(&vb);
return varbuf_detach(&vb);
}
static char *
deb_field(const char *filename, const char *field)
{
pid_t pid;
int p[2];
struct varbuf buf = VARBUF_INIT;
char *end;
m_pipe(p);
pid = subproc_fork();
if (pid == 0) {
/* Child writes to pipe. */
m_dup2(p[1], 1);
close(p[0]);
close(p[1]);
execlp(BACKEND, BACKEND, "--field", filename, field, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package field value extraction"), BACKEND);
}
close(p[1]);
/* Parant reads from pipe. */
varbuf_reset(&buf);
fd_vbuf_copy(p[0], &buf, -1, _("package field value extraction"));
varbuf_end_str(&buf);
close(p[0]);
subproc_wait_check(pid, _("package field value extraction"), PROCPIPE);
/* Trim down trailing junk. */
for (end = buf.buf + strlen(buf.buf) - 1; end - buf.buf >= 1; end--)
if (isspace(*end))
*end = '\0';
else
break;
return varbuf_detach(&buf);
}
