/** Execute a system command
* \param cmd Command
* \return child pid
*/
pid_t
spawn(const char *format, ...)
{
char *sh = NULL;
char cmd[512];
va_list ap;
pid_t pid;
size_t len;
va_start(ap, format);
len = vsnprintf(cmd, sizeof(cmd), format, ap);
va_end(ap);
if (len >= sizeof(cmd))
{
warnxl("command too long (> 512 bytes)");
return -1;
}
if(!(sh = getenv("SHELL")) || sh[0] != '/')
sh = "/bin/sh";
if(!(pid = fork()))
{
setsid();
if (execl(sh, sh, "-c", cmd, (char*)NULL) == -1)
warnl("execl(sh -c %s)", cmd);
exit(EXIT_FAILURE);
}
else if (pid == -1)
warnl("fork");
return pid;
}
void
nilopt(Prog *firstp)
{
NilFlow *r;
Prog *p;
Graph *g;
int ncheck, nkill;
g = flowstart(firstp, sizeof(NilFlow));
if(g == nil)
return;
if(debug_checknil > 1 /* || strcmp(curfn->nname->sym->name, "f1") == 0 */)
dumpit("nilopt", g->start, 0);
ncheck = 0;
nkill = 0;
for(r = (NilFlow*)g->start; r != nil; r = (NilFlow*)r->f.link) {
p = r->f.prog;
if(p->as != ACHECKNIL || !regtyp(&p->from))
continue;
ncheck++;
if(stackaddr(&p->from)) {
if(debug_checknil && p->lineno > 1)
warnl(p->lineno, "removed nil check of SP address");
r->kill = 1;
continue;
}
nilwalkfwd(r);
if(r->kill) {
if(debug_checknil && p->lineno > 1)
warnl(p->lineno, "removed nil check before indirect");
continue;
}
nilwalkback(r);
if(r->kill) {
if(debug_checknil && p->lineno > 1)
warnl(p->lineno, "removed repeated nil check");
continue;
}
}
for(r = (NilFlow*)g->start; r != nil; r = (NilFlow*)r->f.link) {
if(r->kill) {
nkill++;
excise(&r->f);
}
}
flowend(g);
if(debug_checknil > 1)
print("%S: removed %d of %d nil checks\n", curfn->nname->sym, nkill, ncheck);
}
void
config_init(void)
{
if(get_conf(W->confpath) == -1)
{
warnl("parsing configuration file (%s) failed.", W->confpath);
sprintf(W->confpath, "%s/"CONFIG_DEFAULT_PATH, getenv("HOME"));
if(get_conf(W->confpath) == -1)
{
warnxl("parsing default configuration file (%s) failed.", W->confpath);
sprintf(W->confpath, "%s/wmfs/wmfsrc", XDG_CONFIG_DIR);
if(get_conf(W->confpath) == -1)
errxl(1, "parsing system configuration file (%s) failed.", W->confpath);
}
}
config_theme();
config_keybind();
config_tag();
config_client();
config_bars();
config_rule();
config_launcher();
free_conf();
}
