ref: cd00f7f9661d67951ef16c5198541f09f1c058b4
dir: /resources/page/page.go/
// 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 page contains the core interfaces and types for the Page resource,
// a core component in Hugo.
package page
import (
"html/template"
"github.com/gohugoio/hugo/identity"
"github.com/bep/gitmap"
"github.com/gohugoio/hugo/config"
"github.com/gohugoio/hugo/tpl"
"github.com/gohugoio/hugo/common/hugo"
"github.com/gohugoio/hugo/common/maps"
"github.com/gohugoio/hugo/compare"
"github.com/gohugoio/hugo/hugofs/files"
"github.com/gohugoio/hugo/navigation"
"github.com/gohugoio/hugo/related"
"github.com/gohugoio/hugo/resources/resource"
"github.com/gohugoio/hugo/source"
)
// Clear clears any global package state.
func Clear() error {
spc.clear()
return nil
}
// AlternativeOutputFormatsProvider provides alternative output formats for a
// Page.
type AlternativeOutputFormatsProvider interface {
// AlternativeOutputFormats gives the alternative output formats for the
// current output.
// Note that we use the term "alternative" and not "alternate" here, as it
// does not necessarily replace the other format, it is an alternative representation.
AlternativeOutputFormats() OutputFormats
}
// AuthorProvider provides author information.
type AuthorProvider interface {
Author() Author
Authors() AuthorList
}
// ChildCareProvider provides accessors to child resources.
type ChildCareProvider interface {
Pages() Pages
// RegularPages returns a list of pages of kind 'Page'.
// In Hugo 0.57 we changed the Pages method so it returns all page
// kinds, even sections. If you want the old behaviour, you can
// use RegularPages.
RegularPages() Pages
// RegularPagesRecursive returns all regular pages below the current
// section.
RegularPagesRecursive() Pages
Resources() resource.Resources
}
// ContentProvider provides the content related values for a Page.
type ContentProvider interface {
Content() (interface{}, error)
Plain() string
PlainWords() []string
Summary() template.HTML
Truncated() bool
FuzzyWordCount() int
WordCount() int
ReadingTime() int
Len() int
}
// FileProvider provides the source file.
type FileProvider interface {
File() source.File
}
// GetPageProvider provides the GetPage method.
type GetPageProvider interface {
// GetPage looks up a page for the given ref.
// {{ with .GetPage "blog" }}{{ .Title }}{{ end }}
//
// This will return nil when no page could be found, and will return
// an error if the ref is ambiguous.
GetPage(ref string) (Page, error)
// GetPageWithTemplateInfo is for internal use only.
GetPageWithTemplateInfo(info tpl.Info, ref string) (Page, error)
}
// GitInfoProvider provides Git info.
type GitInfoProvider interface {
GitInfo() *gitmap.GitInfo
}
// InSectionPositioner provides section navigation.
type InSectionPositioner interface {
NextInSection() Page
PrevInSection() Page
}
// InternalDependencies is considered an internal interface.
type InternalDependencies interface {
GetRelatedDocsHandler() *RelatedDocsHandler
}
// OutputFormatsProvider provides the OutputFormats of a Page.
type OutputFormatsProvider interface {
OutputFormats() OutputFormats
}
// Page is the core interface in Hugo.
type Page interface {
ContentProvider
TableOfContentsProvider
PageWithoutContent
}
// PageMetaProvider provides page metadata, typically provided via front matter.
type PageMetaProvider interface {
// The 4 page dates
resource.Dated
// Aliases forms the base for redirects generation.
Aliases() []string
// BundleType returns the bundle type: "leaf", "branch" or an empty string if it is none.
// See https://gohugo.io/content-management/page-bundles/
BundleType() files.ContentClass
// A configured description.
Description() string
// Whether this is a draft. Will only be true if run with the --buildDrafts (-D) flag.
Draft() bool
// IsHome returns whether this is the home page.
IsHome() bool
// Configured keywords.
Keywords() []string
// The Page Kind. One of page, home, section, taxonomy, term.
Kind() string
// The configured layout to use to render this page. Typically set in front matter.
Layout() string
// The title used for links.
LinkTitle() string
// IsNode returns whether this is an item of one of the list types in Hugo,
// i.e. not a regular content
IsNode() bool
// IsPage returns whether this is a regular content
IsPage() bool
// Param looks for a param in Page and then in Site config.
Param(key interface{}) (interface{}, error)
// Path gets the relative path, including file name and extension if relevant,
// to the source of this Page. It will be relative to any content root.
Path() string
// The slug, typically defined in front matter.
Slug() string
// This page's language code. Will be the same as the site's.
Lang() string
// IsSection returns whether this is a section
IsSection() bool
// Section returns the first path element below the content root.
Section() string
// Returns a slice of sections (directories if it's a file) to this
// Page.
SectionsEntries() []string
// SectionsPath is SectionsEntries joined with a /.
SectionsPath() string
// Sitemap returns the sitemap configuration for this page.
Sitemap() config.Sitemap
// Type is a discriminator used to select layouts etc. It is typically set
// in front matter, but will fall back to the root section.
Type() string
// The configured weight, used as the first sort value in the default
// page sort if non-zero.
Weight() int
}
// PageRenderProvider provides a way for a Page to render content.
type PageRenderProvider interface {
Render(layout ...string) (template.HTML, error)
RenderString(args ...interface{}) (template.HTML, error)
}
// PageWithoutContent is the Page without any of the content methods.
type PageWithoutContent interface {
RawContentProvider
resource.Resource
PageMetaProvider
resource.LanguageProvider
// For pages backed by a file.
FileProvider
GitInfoProvider
// Output formats
OutputFormatsProvider
AlternativeOutputFormatsProvider
// Tree navigation
ChildCareProvider
TreeProvider
// Horizontal navigation
InSectionPositioner
PageRenderProvider
PaginatorProvider
Positioner
navigation.PageMenusProvider
// TODO(bep)
AuthorProvider
// Page lookups/refs
GetPageProvider
RefProvider
resource.TranslationKeyProvider
TranslationsProvider
SitesProvider
// Helper methods
ShortcodeInfoProvider
compare.Eqer
maps.Scratcher
RelatedKeywordsProvider
// GetTerms gets the terms of a given taxonomy,
// e.g. GetTerms("categories")
GetTerms(taxonomy string) Pages
// Used in change/dependency tracking.
identity.Provider
DeprecatedWarningPageMethods
}
// Positioner provides next/prev navigation.
type Positioner interface {
Next() Page
Prev() Page
// Deprecated: Use Prev. Will be removed in Hugo 0.57
PrevPage() Page
// Deprecated: Use Next. Will be removed in Hugo 0.57
NextPage() Page
}
// RawContentProvider provides the raw, unprocessed content of the page.
type RawContentProvider interface {
RawContent() string
}
// RefProvider provides the methods needed to create reflinks to pages.
type RefProvider interface {
Ref(argsm map[string]interface{}) (string, error)
RefFrom(argsm map[string]interface{}, source interface{}) (string, error)
RelRef(argsm map[string]interface{}) (string, error)
RelRefFrom(argsm map[string]interface{}, source interface{}) (string, error)
}
// RelatedKeywordsProvider allows a Page to be indexed.
type RelatedKeywordsProvider interface {
// Make it indexable as a related.Document
RelatedKeywords(cfg related.IndexConfig) ([]related.Keyword, error)
}
// ShortcodeInfoProvider provides info about the shortcodes in a Page.
type ShortcodeInfoProvider interface {
// HasShortcode return whether the page has a shortcode with the given name.
// This method is mainly motivated with the Hugo Docs site's need for a list
// of pages with the `todo` shortcode in it.
HasShortcode(name string) bool
}
// SitesProvider provide accessors to get sites.
type SitesProvider interface {
Site() Site
Sites() Sites
}
// TableOfContentsProvider provides the table of contents for a Page.
type TableOfContentsProvider interface {
TableOfContents() template.HTML
}
// TranslationsProvider provides access to any translations.
type TranslationsProvider interface {
// IsTranslated returns whether this content file is translated to
// other language(s).
IsTranslated() bool
// AllTranslations returns all translations, including the current Page.
AllTranslations() Pages
// Translations returns the translations excluding the current Page.
Translations() Pages
}
// TreeProvider provides section tree navigation.
type TreeProvider interface {
// IsAncestor returns whether the current page is an ancestor of the given
// Note that this method is not relevant for taxonomy lists and taxonomy terms pages.
IsAncestor(other interface{}) (bool, error)
// CurrentSection returns the page's current section or the page itself if home or a section.
// Note that this will return nil for pages that is not regular, home or section pages.
CurrentSection() Page
// IsDescendant returns whether the current page is a descendant of the given
// Note that this method is not relevant for taxonomy lists and taxonomy terms pages.
IsDescendant(other interface{}) (bool, error)
// FirstSection returns the section on level 1 below home, e.g. "/docs".
// For the home page, this will return itself.
FirstSection() Page
// InSection returns whether the given page is in the current section.
// Note that this will always return false for pages that are
// not either regular, home or section pages.
InSection(other interface{}) (bool, error)
// Parent returns a section's parent section or a page's section.
// To get a section's subsections, see Page's Sections method.
Parent() Page
// Sections returns this section's subsections, if any.
// Note that for non-sections, this method will always return an empty list.
Sections() Pages
// Page returns a reference to the Page itself, kept here mostly
// for legacy reasons.
Page() Page
}
// DeprecatedWarningPageMethods lists deprecated Page methods that will trigger
// a WARNING if invoked.
// This was added in Hugo 0.55.
type DeprecatedWarningPageMethods interface {
source.FileWithoutOverlap
DeprecatedWarningPageMethods1
}
type DeprecatedWarningPageMethods1 interface {
IsDraft() bool
Hugo() hugo.Info
LanguagePrefix() string
GetParam(key string) interface{}
RSSLink() template.URL
URL() string
}
// Move here to trigger ERROR instead of WARNING.
// TODO(bep) create wrappers and put into the Page once it has some methods.
type DeprecatedErrorPageMethods interface {
}