Setup
=====

## Configure

### Template cache

```php
$fenom->setCompileDir($dir);
```

This method set the name of the directory where template caches are stored. By default this is `/tmp`. This directory must be writeable.

### Template settings

```php
// set options using factory
$fenom = Fenom::factory($tpl_dir, $compile_dir, $options);
// or inline using method setOptions
$fenom->setOptions($options);
```

Options may by associative array like `'option_name' => true` or bitwise mask.

| Option name            | Constant                  | Description  | Affect  |
| ---------------------- | ------------------------- | ------------ | ------- |
| *disable_methods*      | `Fenom::DENY_METHODS`     | disable calling methods of objects in templates.  | |
| *disable_native_funcs* | `Fenom::DENY_NATIVE_FUNCS`| disable calling native function in templates, except allowed. | |
| *auto_reload*          | `Fenom::AUTO_RELOAD`      | reload template if source will be changed | decreases performance |
| *force_compile*        | `Fenom::FORCE_COMPILE`    | recompile template every time when the template renders | very decreases performance |
| *disable_cache*        | `Fenom::DISABLE_CACHE`    | disable compile cache | greatly decreases performance |
| *force_include*        | `Fenom::FORCE_INCLUDE`    | paste template body instead of include-tag | increases performance, increases cache size |
| *auto_escape*          | `Fenom::AUTO_ESCAPE`      | html-escape each variables outputs | decreases performance |
| *force_verify*         | `Fenom::FORCE_VERIFY`     | check existence every used variable | decreases performance |
<!-- | *auto_trim*            | `Fenom::AUTO_TRIM`        | remove space-characters before and after tags | | -->
| *disable_statics*      | `Fenom::DENY_STATICS`     | disable calling static methods in templates. | |
| *strip*                | `Fenom::AUTO_STRIP`            | strip all whitespaces in templates. | decrease cache size |

```php
$fenom->setOptions(array(
    "force_compile" => true,
    "force_include" => true
));
// same
$fenom->setOptions(Fenom::AUTO_RELOAD | Fenom::FORCE_INCLUDE);
```

**Note**
By default all options disabled

## Extends

### Template providers

Бывает так что шаблны не хранятся на файловой сиситеме, а хранятся в некотором хранилище, например, в базе данных MySQL.
В этом случае шаблонизатору нужно описать как забирать шаблоны из хранилища, как проверять дату изменения шаблона и где хранить кеш шаблонов (опционально).
Эту задачу берут на себя Providers, это объекты реальзующие интерфейс `Fenom\ProviderInterface`.

### Callbacks and filters

#### Before compile callback

```php
$fenom->addPreFilter(function () { /* ... */ });
```

#### Tag filter callback

#### Filter callback

#### After compile callback