/* zipfile.save(callback) */
Handle<Value> ZipFile::Save(const Arguments& args)
{
ZipFile* zf = ObjectWrap::Unwrap<ZipFile>(args.This());
if (zf->Busy())
return ThrowException(Exception::Error(String::New("Zipfile already in use..")));
Local<Value> cb = args[0];
if (!cb->IsFunction())
return ThrowException(Exception::Error(
String::New("Second argument should be a callback function.")));
save_closure_t *save = new save_closure_t;
save->done = false;
save->zf = zf;
save->error = NULL;
save->save_cb = Persistent<Function>::New(Handle<Function>::Cast(cb));
pthread_mutex_init(&save->mutex, NULL);
saving_closures.insert(save);
zf->saving = true;
zf->Ref();
ev_ref(EV_DEFAULT_UC);
pthread_create(&save->thread, NULL, Save_Thread, save);
return Undefined();
}
Handle<Value> ZipFile::readFile(const Arguments& args) {
HandleScope scope;
if (args.Length() < 2)
return ThrowException(Exception::TypeError(
String::New("requires two arguments, the name of a file and a callback")));
// first arg must be name
if (!args[0]->IsString())
return ThrowException(Exception::TypeError(
String::New("first argument must be a file name inside the zip")));
// last arg must be function callback
if (!args[args.Length()-1]->IsFunction())
return ThrowException(Exception::TypeError(
String::New("last argument must be a callback function")));
std::string name = TOSTR(args[0]);
ZipFile* zf = ObjectWrap::Unwrap<ZipFile>(args.This());
closure_t *closure = new closure_t();
closure->request.data = closure;
// libzip is not threadsafe so we cannot use the zf->archive_
// instead we open a new zip archive for each thread
struct zip *za;
int err;
char errstr[1024];
if ((za = zip_open(zf->file_name_.c_str() , 0, &err)) == NULL) {
zip_error_to_str(errstr, sizeof(errstr), err, errno);
std::stringstream s;
s << "cannot open file: " << zf->file_name_ << " error: " << errstr << "\n";
zip_close(za);
return ThrowException(Exception::Error(
String::New(s.str().c_str())));
}
closure->zf = zf;
closure->za = za;
closure->error = false;
closure->name = name;
closure->cb = Persistent<Function>::New(Handle<Function>::Cast(args[args.Length()-1]));
uv_queue_work(uv_default_loop(), &closure->request, Work_ReadFile, Work_AfterReadFile);
uv_ref(uv_default_loop());
zf->Ref();
return Undefined();
}
/* zipfile.read(buffer, pos, len, cb) -> cb(bytesRead, error) */
Handle<Value> ZipFile::Read(const Arguments& args)
{
ZipFile* zf = ObjectWrap::Unwrap<ZipFile>(args.This());
if (!Buffer::HasInstance(args[0])) {
return ThrowException(Exception::Error(
String::New("First argument needs to be a buffer")));
}
Local<Object> buffer_obj = args[0]->ToObject();
char *buffer_data = Buffer::Data(buffer_obj);
size_t buffer_length = Buffer::Length(buffer_obj);
zip_uint64_t off = args[1]->Int32Value();
if (off >= buffer_length) {
return ThrowException(Exception::Error(
String::New("Offset is out of bounds")));
}
zip_uint64_t len = args[2]->Int32Value();
if (off + len > buffer_length) {
return ThrowException(Exception::Error(
String::New("Length is extends beyond buffer")));
}
Local<Value> cb = args[3];
if (!cb->IsFunction())
return ThrowException(Exception::Error(
String::New("Fourth argument should be a callback function.")));
read_closure_t *closure = new read_closure_t();
closure->zf = zf;
closure->read = 0;
closure->data = buffer_data+off;
closure->len = len;
closure->cb = Persistent<Function>::New(Handle<Function>::Cast(args[3]));
eio_custom(EIO_Read, EIO_PRI_DEFAULT, EIO_AfterRead, closure);
zf->Ref();
ev_ref(EV_DEFAULT_UC);
return Undefined();
}