static int
process_event(struct event_format *event, const char *filter_str,
struct filter_arg **parg, char **error_str)
{
int ret;
pevent_buffer_init(filter_str, strlen(filter_str));
ret = process_filter(event, parg, error_str, 0);
if (ret == 1) {
show_error(error_str,
"Unbalanced number of ')'");
return -1;
}
if (ret < 0)
return ret;
/* If parg is NULL, then make it into FALSE */
if (!*parg) {
*parg = allocate_arg();
(*parg)->type = FILTER_ARG_BOOLEAN;
(*parg)->boolean.value = FILTER_FALSE;
}
return 0;
}
void HtmlMessage::process(Client& cli)
{
// process sub.
process_filter(&data, cli);
// emit message.
cli.emit(kSignalHtmlMessage, eventobj_t::Data(this));
}
void Statistics_table_model::set_variable(Application_variable v, bool apply_filter) {
for (unsigned i=0; i<variables.size(); i++) {
if (variables[i].first==v.first) {
variables[i] = v;
process_filter();
// emit dataChanged(QModelIndex(), QModelIndex());
return;
}
}
// std::cout << "setting " << v.first.toStdString() << " pushed to end and ";
//std::cout << "begin insert row " << std::endl;
// beginInsertRows(QModelIndex(), 0, 0);
variables.push_back(v);
process_filter();
// endInsertRows();
// std::cout << "variables.size() " << variables.size() << std::endl;
}
void HtmlMessage::process_filter(xmlnode_t *node, Client& cli)
{
if (node->name == "img")
{
Field fld = node->value;
cli.emit(kSignalGotField, eventobj_t::Data(this, &fld));
}
// each child.
for (xmlnode_t::children_type::iterator iter = node->children.begin();
iter != node->children.end();
++iter)
{
process_filter(iter->second, cli);
}
}
void Settings_list_widget::load_button(bool) {
QSettings settings;
QString file_name = QFileDialog::getOpenFileName(
this,
"Choose a filename to load settings",
settings.value("last-data-directory",QString()).toString(),
"Settings (*.ini)");
if (file_name=="") return;
if (!file_name.endsWith(".ini")) file_name += ".ini";
QString save_directory = file_name;
save_directory.truncate(file_name.lastIndexOf('/'));
settings.setValue("last-data-directory",save_directory);
Settings_table_model::load_current_settings(file_name);
process_filter();
}
Status procProcesses(std::vector<std::string>& processes) {
boost::regex process_filter("\\d+");
// Iterate over each process-like directory in proc.
boost::filesystem::directory_iterator it(kLinuxProcPath), end;
try {
for (; it != end; ++it) {
if (boost::filesystem::is_directory(it->status())) {
boost::smatch what;
if (boost::regex_match(
it->path().leaf().string(), what, process_filter)) {
processes.push_back(it->path().leaf().string());
}
}
}
} catch (boost::filesystem::filesystem_error& e) {
VLOG(1) << "Exception iterating Linux processes " << e.what();
return Status(1, e.what());
}
return Status(0, "OK");
}
/*
* Enumerate all video devices
*
* See also:
*
* Using the System Device Enumerator:
* http://msdn2.microsoft.com/en-us/library/ms787871.aspx
*/
int enum_devices()
{
HRESULT hr;
printf("Enumerating video input devices ...\n");
// Create the System Device Enumerator.
ICreateDevEnum *pSysDevEnum = NULL;
hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER,
IID_ICreateDevEnum, (void **)&pSysDevEnum);
if(FAILED(hr))
{
fprintf(stderr, "ERROR: Unable to create system device enumerator.\n");
return hr;
}
// Obtain a class enumerator for the video input device category.
IEnumMoniker *pEnumCat = NULL;
hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pEnumCat, 0);
if(hr == S_OK)
{
// Enumerate the monikers.
IMoniker *pMoniker = NULL;
ULONG cFetched;
while(pEnumCat->Next(1, &pMoniker, &cFetched) == S_OK)
{
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag,
(void **)&pPropBag);
if(SUCCEEDED(hr))
{
// To retrieve the filter's friendly name, do the following:
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
if (SUCCEEDED(hr))
{
// Display the name in your UI somehow.
wprintf(L" Found device: %s\n", varName.bstrVal);
}
VariantClear(&varName);
// To create an instance of the filter, do the following:
IBaseFilter *pFilter;
hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter,
(void**)&pFilter);
process_filter(pFilter);
//Remember to release pFilter later.
pPropBag->Release();
}
pMoniker->Release();
}
pEnumCat->Release();
}
pSysDevEnum->Release();
return 0;
}
static int
process_filter(struct event_format *event, struct filter_arg **parg,
char **error_str, int not)
{
enum event_type type;
char *token = NULL;
struct filter_arg *current_op = NULL;
struct filter_arg *current_exp = NULL;
struct filter_arg *left_item = NULL;
struct filter_arg *arg = NULL;
enum op_type op_type;
enum filter_op_type btype;
enum filter_exp_type etype;
enum filter_cmp_type ctype;
int ret;
*parg = NULL;
do {
free(token);
type = read_token(&token);
switch (type) {
case EVENT_SQUOTE:
case EVENT_DQUOTE:
case EVENT_ITEM:
arg = create_arg_item(event, token, type, error_str);
if (!arg)
goto fail;
if (!left_item)
left_item = arg;
else if (current_exp) {
ret = add_right(current_exp, arg, error_str);
if (ret < 0)
goto fail;
left_item = NULL;
/* Not's only one one expression */
if (not) {
arg = NULL;
if (current_op)
goto fail_print;
free(token);
*parg = current_exp;
return 0;
}
} else
goto fail_print;
arg = NULL;
break;
case EVENT_DELIM:
if (*token == ',') {
show_error(error_str,
"Illegal token ','");
goto fail;
}
if (*token == '(') {
if (left_item) {
show_error(error_str,
"Open paren can not come after item");
goto fail;
}
if (current_exp) {
show_error(error_str,
"Open paren can not come after expression");
goto fail;
}
ret = process_filter(event, &arg, error_str, 0);
if (ret != 1) {
if (ret == 0)
show_error(error_str,
"Unbalanced number of '('");
goto fail;
}
ret = 0;
/* A not wants just one expression */
if (not) {
if (current_op)
goto fail_print;
*parg = arg;
return 0;
}
if (current_op)
ret = add_right(current_op, arg, error_str);
else
current_exp = arg;
if (ret < 0)
goto fail;
} else { /* ')' */
if (!current_op && !current_exp)
goto fail_print;
/* Make sure everything is finished at this level */
if (current_exp && !check_op_done(current_exp))
goto fail_print;
if (current_op && !check_op_done(current_op))
goto fail_print;
if (current_op)
*parg = current_op;
else
*parg = current_exp;
return 1;
}
break;
case EVENT_OP:
op_type = process_op(token, &btype, &ctype, &etype);
/* All expect a left arg except for NOT */
switch (op_type) {
case OP_BOOL:
/* Logic ops need a left expression */
if (!current_exp && !current_op)
goto fail_print;
/* fall through */
case OP_NOT:
/* logic only processes ops and exp */
if (left_item)
goto fail_print;
break;
case OP_EXP:
case OP_CMP:
if (!left_item)
goto fail_print;
break;
case OP_NONE:
show_error(error_str,
"Unknown op token %s", token);
goto fail;
}
ret = 0;
switch (op_type) {
case OP_BOOL:
arg = create_arg_op(btype);
if (current_op)
ret = add_left(arg, current_op);
else
ret = add_left(arg, current_exp);
current_op = arg;
current_exp = NULL;
break;
case OP_NOT:
arg = create_arg_op(btype);
if (current_op)
ret = add_right(current_op, arg, error_str);
if (ret < 0)
goto fail;
current_exp = arg;
ret = process_filter(event, &arg, error_str, 1);
if (ret < 0)
goto fail;
ret = add_right(current_exp, arg, error_str);
if (ret < 0)
goto fail;
break;
case OP_EXP:
case OP_CMP:
if (op_type == OP_EXP)
arg = create_arg_exp(etype);
else
arg = create_arg_cmp(ctype);
if (current_op)
ret = add_right(current_op, arg, error_str);
if (ret < 0)
goto fail;
ret = add_left(arg, left_item);
if (ret < 0) {
arg = NULL;
goto fail_print;
}
current_exp = arg;
break;
default:
break;
}
arg = NULL;
if (ret < 0)
goto fail_print;
break;
case EVENT_NONE:
break;
default:
goto fail_print;
}
} while (type != EVENT_NONE);
if (!current_op && !current_exp)
goto fail_print;
if (!current_op)
current_op = current_exp;
current_op = collapse_tree(current_op);
*parg = current_op;
return 0;
fail_print:
show_error(error_str, "Syntax error");
fail:
free_arg(current_op);
free_arg(current_exp);
free_arg(arg);
free(token);
return -1;
}
