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145 lines
4 KiB
Go
145 lines
4 KiB
Go
// Copyright 2019 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hooks
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import (
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"context"
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"io"
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"github.com/gohugoio/hugo/common/hugio"
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"github.com/gohugoio/hugo/common/text"
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"github.com/gohugoio/hugo/common/types/hstring"
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"github.com/gohugoio/hugo/identity"
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"github.com/gohugoio/hugo/markup/internal/attributes"
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)
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var _ AttributesOptionsSliceProvider = (*attributes.AttributesHolder)(nil)
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type AttributesProvider interface {
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// Attributes passed in from Markdown (e.g. { attrName1=attrValue1 attrName2="attr Value 2" }).
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Attributes() map[string]any
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}
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type LinkContext interface {
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// The Page being rendered.
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Page() any
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// The link URL.
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Destination() string
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// The link title attribute.
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Title() string
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// The rendered (HTML) text.
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Text() hstring.RenderedString
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// The plain variant of Text.
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PlainText() string
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}
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type ImageLinkContext interface {
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LinkContext
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// Returns true if this is a standalone image and the config option
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// markup.goldmark.parser.wrapStandAloneImageWithinParagraph is disabled.
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IsBlock() bool
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// Zero-based ordinal for all the images in the current document.
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Ordinal() int
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}
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// CodeblockContext is the context passed to a code block render hook.
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type CodeblockContext interface {
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AttributesProvider
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text.Positioner
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// Chroma highlighting processing options. This will only be filled if Type is a known Chroma Lexer.
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Options() map[string]any
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// The type of code block. This will be the programming language, e.g. bash, when doing code highlighting.
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Type() string
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// The text between the code fences.
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Inner() string
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// Zero-based ordinal for all code blocks in the current document.
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Ordinal() int
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// The owning Page.
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Page() any
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}
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type AttributesOptionsSliceProvider interface {
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AttributesSlice() []attributes.Attribute
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OptionsSlice() []attributes.Attribute
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}
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type LinkRenderer interface {
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RenderLink(cctx context.Context, w io.Writer, ctx LinkContext) error
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identity.Provider
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}
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type CodeBlockRenderer interface {
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RenderCodeblock(cctx context.Context, w hugio.FlexiWriter, ctx CodeblockContext) error
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identity.Provider
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}
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type IsDefaultCodeBlockRendererProvider interface {
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IsDefaultCodeBlockRenderer() bool
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}
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// HeadingContext contains accessors to all attributes that a HeadingRenderer
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// can use to render a heading.
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type HeadingContext interface {
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// Page is the page containing the heading.
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Page() any
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// Level is the level of the header (i.e. 1 for top-level, 2 for sub-level, etc.).
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Level() int
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// Anchor is the HTML id assigned to the heading.
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Anchor() string
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// Text is the rendered (HTML) heading text, excluding the heading marker.
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Text() hstring.RenderedString
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// PlainText is the unrendered version of Text.
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PlainText() string
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// Attributes (e.g. CSS classes)
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AttributesProvider
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}
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// HeadingRenderer describes a uniquely identifiable rendering hook.
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type HeadingRenderer interface {
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// Render writes the rendered content to w using the data in w.
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RenderHeading(cctx context.Context, w io.Writer, ctx HeadingContext) error
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identity.Provider
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}
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// ElementPositionResolver provides a way to resolve the start Position
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// of a markdown element in the original source document.
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// This may be both slow and approximate, so should only be
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// used for error logging.
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type ElementPositionResolver interface {
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ResolvePosition(ctx any) text.Position
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}
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type RendererType int
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const (
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LinkRendererType RendererType = iota + 1
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ImageRendererType
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HeadingRendererType
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CodeBlockRendererType
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)
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type GetRendererFunc func(t RendererType, id any) any
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