function explode_exp($expressionCompressed, $html = false, $resolveMacro = false, $sourceHost = null, $destinationHost = null)
{
$expressionExpanded = $html ? array() : '';
$trigger = array();
for ($i = 0, $state = '', $max = zbx_strlen($expressionCompressed); $i < $max; $i++) {
if ($expressionCompressed[$i] == '{') {
if ($expressionCompressed[$i + 1] == '$') {
$state = 'USERMACRO';
$userMacro = '';
} elseif ($expressionCompressed[$i + 1] == '#') {
$state = 'LLDMACRO';
$lldMacro = '';
} else {
$state = 'FUNCTIONID';
$functionId = '';
continue;
}
} elseif ($expressionCompressed[$i] == '}') {
if ($state == 'USERMACRO') {
$state = '';
$userMacro .= '}';
if ($resolveMacro) {
$functionData['expression'] = $userMacro;
$userMacro = CMacrosResolverHelper::resolveTriggerExpressionUserMacro($functionData);
}
if ($html) {
$expressionExpanded[] = $userMacro;
} else {
$expressionExpanded .= $userMacro;
}
continue;
} elseif ($state == 'LLDMACRO') {
$state = '';
$lldMacro .= '}';
if ($html) {
$expressionExpanded[] = $lldMacro;
} else {
$expressionExpanded .= $lldMacro;
}
continue;
} elseif ($functionId == 'TRIGGER.VALUE') {
$state = '';
if ($html) {
$expressionExpanded[] = '{' . $functionId . '}';
} else {
$expressionExpanded .= '{' . $functionId . '}';
}
continue;
}
$state = '';
$error = true;
if (is_numeric($functionId)) {
$functionData = DBfetch(DBselect('SELECT h.host,h.hostid,i.itemid,i.key_,f.function,f.triggerid,f.parameter,i.itemid,i.status,i.type,i.flags' . ' FROM items i,functions f,hosts h' . ' WHERE f.functionid=' . zbx_dbstr($functionId) . ' AND i.itemid=f.itemid' . ' AND h.hostid=i.hostid'));
if ($functionData) {
$error = false;
if ($resolveMacro) {
$trigger = $functionData;
// expand macros in item key
$items = CMacrosResolverHelper::resolveItemKeys(array($functionData));
$item = reset($items);
$functionData['key_'] = $item['key_expanded'];
// expand macros in function parameter
$functionParameters = CMacrosResolverHelper::resolveFunctionParameters(array($functionData));
$functionParameter = reset($functionParameters);
$functionData['parameter'] = $functionParameter['parameter_expanded'];
}
if ($sourceHost !== null && $destinationHost !== null && $sourceHost === $functionData['host']) {
$functionData['host'] = $destinationHost;
}
if ($html) {
if ($functionData['status'] == ITEM_STATUS_DISABLED) {
$style = 'disabled';
} elseif ($functionData['status'] == ITEM_STATUS_ACTIVE) {
$style = 'enabled';
} else {
$style = 'unknown';
}
if ($functionData['flags'] == ZBX_FLAG_DISCOVERY_CREATED || $functionData['type'] == ITEM_TYPE_HTTPTEST) {
$link = new CSpan($functionData['host'] . ':' . $functionData['key_'], $style);
} elseif ($functionData['flags'] == ZBX_FLAG_DISCOVERY_PROTOTYPE) {
$link = new CLink($functionData['host'] . ':' . $functionData['key_'], 'disc_prototypes.php?form=update&itemid=' . $functionData['itemid'] . '&parent_discoveryid=' . $trigger['discoveryRuleid'] . '&switch_node=' . id2nodeid($functionData['itemid']), $style);
} else {
$link = new CLink($functionData['host'] . ':' . $functionData['key_'], 'items.php?form=update&itemid=' . $functionData['itemid'] . '&switch_node=' . id2nodeid($functionData['itemid']), $style);
}
$expressionExpanded[] = array('{', $link, '.', bold($functionData['function'] . '('), $functionData['parameter'], bold(')'), '}');
} else {
$expressionExpanded .= '{' . $functionData['host'] . ':' . $functionData['key_'] . '.' . $functionData['function'] . '(' . $functionData['parameter'] . ')}';
}
}
}
if ($error) {
if ($html) {
$expressionExpanded[] = new CSpan('*ERROR*', 'on');
} else {
$expressionExpanded .= '*ERROR*';
}
}
continue;
}
switch ($state) {
case 'FUNCTIONID':
$functionId .= $expressionCompressed[$i];
break;
case 'USERMACRO':
$userMacro .= $expressionCompressed[$i];
break;
case 'LLDMACRO':
$lldMacro .= $expressionCompressed[$i];
break;
default:
if ($html) {
$expressionExpanded[] = $expressionCompressed[$i];
} else {
$expressionExpanded .= $expressionCompressed[$i];
}
}
}
return $expressionExpanded;
}
