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#include <LuaTask.h>
#include <LuaHandle.h>
#include <TaskMan.h>
#ifndef LUATASK_OMIT_HTTPCLIENT
#include <HttpClient.h>
#endif
#ifndef LUATASK_OMIT_COMMAND
#include <CopyJob.h>
#endif
htab * LuaTask::h = hcreate(1);
LuaTask::LuaTask(Lua * _L, const String & _cmd) : L(_L), cmd(_cmd), nargs(0), c(0), b(0) {
LuaTask * top = gettop();
if (top) {
WaitFor(top);
} else {
SetBurst();
}
settop(this);
stacktop = L->gettop() + 1;
}
LuaTask::LuaTask(Lua * _L, int _nargs) throw (GeneralException) : L(_L), cmd(""), nargs(_nargs), c(0), b(0) {
if (gettop())
throw GeneralException("Can't run a stack-based LuaTask when there are other tasks waiting.");
SetBurst();
settop(this);
stacktop = L->gettop() - nargs;
}
LuaTask::~LuaTask() {
if (gettop() == this) {
settop(0);
}
}
LuaTask * LuaTask::gettop() {
if (!hfind(h, (Uint8 *) L, sizeof(L))) {
hadd(h, (Uint8 *) L, sizeof(L), 0);
}
return (LuaTask *) hstuff(h);
}
void LuaTask::settop(LuaTask * v) {
if (!hfind(h, (Uint8 *) L, sizeof(L)))
return;
if (v) {
hstuff(h) = v;
} else {
hdel(h);
}
}
String LuaTask::GetName() {
return "LuaTask(" + cmd + ")";
}
int LuaTask::Do() throw (GeneralException) {
switch (current) {
case 0:
current = 1;
if (cmd != "") {
L->resume(cmd);
} else {
L->resume(nargs);
}
case 2:
nargs = 0;
#ifndef LUATASK_OMIT_HTTPCLIENT
if (task == "HttpClient") {
LuaBuffer o(b);
o.pushdestruct(L);
nargs = 1;
}
#endif
#ifndef LUATASK_OMIT_COMMAND
if (task == "Command") {
delete p;
LuaBuffer o(b);
o.pushdestruct(L);
nargs = 1;
}
#endif
if (!c)
delete c;
c = 0;
if (current != 1)
L->resume(nargs);
case 1:
current = 2;
if (L->gettop() >= 1) {
task = L->tostring(1);
if (task == "") {
L->error("Must precise a task-type to execute.");
return TASK_DONE;
#ifndef LUATASK_OMIT_HTTPCLIENT
} else if (task == "HttpClient") {
String url = L->tostring(2);
t_headers headers;
b = new Buffer(true);
headers.push_back("User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.8.1) Gecko/20061010 Firefox/2.0");
c = new HttpClient(url, b, "", headers);
WaitFor(c);
Suspend(TASK_ON_HOLD);
#endif
#ifndef LUATASK_OMIT_COMMAND
} else if (task == "Command") {
pid_t pid;
int i;
char * cmd;
char ** args, ** ptr;
cmd = L->tostring(2).strdup();
args = (char **) malloc(sizeof(char *) * (L->gettop() - 1));
args[0] = cmd;
for (i = 3; i <= L->gettop(); i++) {
args[i - 2] = L->tostring(i).strdup();
}
args[L->gettop() - 1] = 0;
b = new Buffer(true);
p = new InPipe();
if (!(pid = fork())) {
p->Hook();
execvp(cmd, args);
}
c = new CopyJob(p, b);
for (i = 3; i <= L->gettop(); i++) {
free(args[i - 2]);
}
free(cmd);
current = 3;
WaitFor(pid);
Suspend(TASK_ON_HOLD);
#endif
} else {
L->error("Unknow requested task: " + task);
return TASK_DONE;
}
} else {
return TASK_DONE;
}
break;
#ifndef LUATASK_OMIT_COMMAND
case 3:
current = 2;
WaitFor(c);
p->HalfClose();
return TASK_ON_HOLD;
#endif
}
return TASK_ON_HOLD;
}
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