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d3c4fdb8ff
In page.NewOutputFormat, we take an output.Format f and use it to create a page.OutputFormat. If the format is canonical, we assign the final OutputFormat's Rel to "canonical" rather than using f.Rel. However, this leads to unexpected behavior for custom output formats, where a user can define a "rel" for a format via the config file. For example, the standard for "humans.txt" files requires using rel="author" in HTML "link" elements. Meanwhile, humans.txt is usually the only format used for its content. As a result, for Hugo configurations that define a humans.txt custom output format, Hugo will render "link" elements to content in this format with rel="canonical," rather than "author" as required by the standard. This commit changes page.NewOutputFormat to check whether a given format is user defined and, if so, skips assigning Rel to "canonical," even if isCanonical is true. Fixes #8030
96 lines
3 KiB
Go
96 lines
3 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 page contains the core interfaces and types for the Page resource,
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// a core component in Hugo.
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package page
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import (
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"strings"
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"github.com/gohugoio/hugo/media"
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"github.com/gohugoio/hugo/output"
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)
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// OutputFormats holds a list of the relevant output formats for a given page.
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type OutputFormats []OutputFormat
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// OutputFormat links to a representation of a resource.
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type OutputFormat struct {
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// Rel contains a value that can be used to construct a rel link.
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// This is value is fetched from the output format definition.
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// Note that for pages with only one output format,
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// this method will always return "canonical".
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// As an example, the AMP output format will, by default, return "amphtml".
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//
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// See:
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// https://www.ampproject.org/docs/guides/deploy/discovery
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//
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// Most other output formats will have "alternate" as value for this.
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Rel string
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Format output.Format
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relPermalink string
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permalink string
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}
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// Name returns this OutputFormat's name, i.e. HTML, AMP, JSON etc.
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func (o OutputFormat) Name() string {
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return o.Format.Name
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}
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// MediaType returns this OutputFormat's MediaType (MIME type).
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func (o OutputFormat) MediaType() media.Type {
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return o.Format.MediaType
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}
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// Permalink returns the absolute permalink to this output format.
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func (o OutputFormat) Permalink() string {
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return o.permalink
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}
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// RelPermalink returns the relative permalink to this output format.
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func (o OutputFormat) RelPermalink() string {
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return o.relPermalink
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}
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func NewOutputFormat(relPermalink, permalink string, isCanonical bool, f output.Format) OutputFormat {
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isUserConfigured := true
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for _, d := range output.DefaultFormats {
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if strings.EqualFold(d.Name, f.Name) {
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isUserConfigured = false
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}
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}
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rel := f.Rel
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// If the output format is the canonical format for the content, we want
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// to specify this in the "rel" attribute of an HTML "link" element.
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// However, for custom output formats, we don't want to surprise users by
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// overwriting "rel"
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if isCanonical && !isUserConfigured {
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rel = "canonical"
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}
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return OutputFormat{Rel: rel, Format: f, relPermalink: relPermalink, permalink: permalink}
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}
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// Get gets a OutputFormat given its name, i.e. json, html etc.
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// It returns nil if none found.
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func (o OutputFormats) Get(name string) *OutputFormat {
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for _, f := range o {
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if strings.EqualFold(f.Format.Name, name) {
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return &f
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}
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}
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return nil
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}
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