An extension bundle is a collection of parser extensions, rewrite rules, render overrides and other features to be applied to parse, render and transform operations. It serves as a central registry for all of Laika's extension and customization hooks.
The base trait contains empty implementations for all these features, therefore any bundle implementation only needs to override the relevant members.
If the bundle implementation is not parameterized, the most convenient choice for users would be to simply implement it as an object, like all built-in extensions do:
object MyExtensions extends ExtensionBundle {
// override one or more members
}
This way a user can easily pass it to the operation builders:
val transformer = Transformer
.from(Markdown)
.to(HTML)
.using(MyExtensions)
.build
- Companion:
- object
Value members
Abstract methods
Concrete methods
Base configuration that serves as a fallback for configuration files in the source directories and/or config headers in markup and template documents.
Base configuration that serves as a fallback for configuration files in the source directories and/or config headers in markup and template documents.
Specifies the function to use for determining the document type of the input based on its path.
Specifies the function to use for determining the document type of the input based on its path.
Any path for which this function is not defined will be processed by the remaining
defined bundles. The documents for paths for which none of the extensions provides
a DocumentType will be treated as static files to be copied over to the target
directory in transformations by default.
Extends the built-in path translator with additional functionality.
Extends the built-in path translator with additional functionality.
The internal path translator deals with aspects like applying the suffix for the output format or modifying the path for versioned documents and more.
The PathTranslatorExtensionContext provides access to this internal path translator, to the output
format it is going to be used for and the complete user configuration.
In most cases, extensions can simply be created by using either PathTranslator.preTranslate
or PathTranslator.postTranslate to apply additional translation steps either before or after
applying the internal translator.
Alternatively a completely custom implementation of the PathTranslator trait can be provided,
but this will usually not be necessary.
PathTranslator implementations usually do not deal with the fragment part of the path.
Use the slugBuilder extension point for this purpose.
Provides a version of this bundle that can be used in strict mode or None if the entire bundle
should be removed in strict mode.
Provides a version of this bundle that can be used in strict mode or None if the entire bundle
should be removed in strict mode.
When strict mode does not affect a bundle it can return Some(this).
Any bundle to be used in strict mode should be free from any parser extensions that adds features to markup syntax beyond their respective specifications.
Indicates whether the bundle is a built-in default provided by the library, a collection of extensions installed by a markup format or user-defined.
Indicates whether the bundle is a built-in default provided by the library, a collection of extensions installed by a markup format or user-defined.
This is relevant for determining the precedence of installed bundles when merging them, as user-supplied functionality always overrides library defaults.
Specifies extensions and/or replacements for parsers that deal with text markup, templates, CSS or configuration headers.
Specifies extensions and/or replacements for parsers that deal with text markup, templates, CSS or configuration headers.
Internal API usually only called by other extension bundles.
Internal API usually only called by other extension bundles.
In some cases a bundle might be an extension of another bundle and needs the opportunity to process and modify that bundle without requiring a direct reference to it. An example is a registry for directives which needs to pass all its registered directives to the bundle which deals with finally creating all the directive parsers.
The partial function should match only on the types of bundles it intends to process and is then allowed to return a new, modified instance of that bundle.
Provides a version of this bundle that can be used in the default run mode where raw content in markup documents (such as embedded HTML) is disabled.
Provides a version of this bundle that can be used in the default run mode where raw content in markup documents (such as embedded HTML) is disabled.
When a bundle does not add parsers for raw content it can return Some(this).
Any bundle to be used in the default run mode should be free from any parser extensions that
allow raw content in markup.
When the user switches the acceptRawContent flag to true then this method will not be invoked
and the initial instance of the bundle is used.
The overrides for renderers defined by this bundle.
The overrides for renderers defined by this bundle.
An override is always specific to a particular output format like HTML or PDF. A bundle can contain multiple overrides for the same output format which will be merged before use.
Specifies rewrite rules to be applied to the document tree model between the parse and render operations.
Specifies rewrite rules to be applied to the document tree model between the parse and render operations.
The specified functions will be invoked for each document, allowing to capture
information from the entire document tree before returning the actual rule,
which is a partial function from Element to Option[Element] that allows
to remove or replace elements from the tree.
Function that receives the text of a headline, the name of a document or directory or a manually assigned identifier, and builds a slug from it that becomes part of the final URL or identifier (depending on output format).
Function that receives the text of a headline, the name of a document or directory or a manually assigned identifier, and builds a slug from it that becomes part of the final URL or identifier (depending on output format).
The result of the function must be:
- a valid identifier in HTML and XML
- a valid path segment in a URL
- a valid file name
Returns a new extension bundle by merging the content of this bundle with the content of the base bundle.
Returns a new extension bundle by merging the content of this bundle with the content of the base bundle.
The other bundle is treated as the base of this bundle, which means that:
-
in case of optional features a feature defined in this bundle will overwrite a feature defined in the base
-
in case of features applied in sequence, the features in this bundle will be applied before the features in the base bundle
-
in case of feature collections, the features of this bundle will be merged with those of the base bundle