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// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package hooks
import (
"io"
"github.com/gohugoio/hugo/common/hugio"
"github.com/gohugoio/hugo/common/text"
"github.com/gohugoio/hugo/common/types/hstring"
"github.com/gohugoio/hugo/identity"
"github.com/gohugoio/hugo/markup/internal/attributes"
)
var _ AttributesOptionsSliceProvider = (*attributes.AttributesHolder)(nil)
type AttributesProvider interface {
Attributes() map[string]any
}
type LinkContext interface {
Page() any
Destination() string
Title() string
Text() hstring.RenderedString
PlainText() string
}
type CodeblockContext interface {
AttributesProvider
text.Positioner
Options() map[string]any
Type() string
Inner() string
Ordinal() int
Page() any
}
type AttributesOptionsSliceProvider interface {
AttributesSlice() []attributes.Attribute
OptionsSlice() []attributes.Attribute
}
type LinkRenderer interface {
RenderLink(w io.Writer, ctx LinkContext) error
identity.Provider
}
type CodeBlockRenderer interface {
RenderCodeblock(w hugio.FlexiWriter, ctx CodeblockContext) error
identity.Provider
}
type IsDefaultCodeBlockRendererProvider interface {
IsDefaultCodeBlockRenderer() bool
}
// HeadingContext contains accessors to all attributes that a HeadingRenderer
// can use to render a heading.
type HeadingContext interface {
// Page is the page containing the heading.
Page() any
// Level is the level of the header (i.e. 1 for top-level, 2 for sub-level, etc.).
Level() int
// Anchor is the HTML id assigned to the heading.
Anchor() string
// Text is the rendered (HTML) heading text, excluding the heading marker.
Text() hstring.RenderedString
// PlainText is the unrendered version of Text.
PlainText() string
// Attributes (e.g. CSS classes)
AttributesProvider
}
// HeadingRenderer describes a uniquely identifiable rendering hook.
type HeadingRenderer interface {
// Render writes the rendered content to w using the data in w.
RenderHeading(w io.Writer, ctx HeadingContext) error
identity.Provider
}
// ElementPositionResolver provides a way to resolve the start Position
// of a markdown element in the original source document.
// This may be both slow and approximate, so should only be
// used for error logging.
type ElementPositionResolver interface {
ResolvePosition(ctx any) text.Position
}
type RendererType int
const (
LinkRendererType RendererType = iota + 1
ImageRendererType
HeadingRendererType
CodeBlockRendererType
)
type GetRendererFunc func(t RendererType, id any) any
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