mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-07 20:30:36 -05:00
345 lines
8.3 KiB
Go
345 lines
8.3 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
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import (
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"path"
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"path/filepath"
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"strings"
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"github.com/gohugoio/hugo/helpers"
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"github.com/gohugoio/hugo/output"
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)
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const slash = "/"
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// TargetPathDescriptor describes how a file path for a given resource
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// should look like on the file system. The same descriptor is then later used to
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// create both the permalinks and the relative links, paginator URLs etc.
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//
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// The big motivating behind this is to have only one source of truth for URLs,
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// and by that also get rid of most of the fragile string parsing/encoding etc.
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//
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//
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type TargetPathDescriptor struct {
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PathSpec *helpers.PathSpec
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Type output.Format
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Kind string
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Sections []string
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// For regular content pages this is either
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// 1) the Slug, if set,
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// 2) the file base name (TranslationBaseName).
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BaseName string
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// Source directory.
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Dir string
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// Typically a language prefix added to file paths.
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PrefixFilePath string
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// Typically a language prefix added to links.
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PrefixLink string
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// If in multihost mode etc., every link/path needs to be prefixed, even
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// if set in URL.
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ForcePrefix bool
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// URL from front matter if set. Will override any Slug etc.
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URL string
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// Used to create paginator links.
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Addends string
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// The expanded permalink if defined for the section, ready to use.
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ExpandedPermalink string
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// Some types cannot have uglyURLs, even if globally enabled, RSS being one example.
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UglyURLs bool
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}
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// TODO(bep) move this type.
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type TargetPaths struct {
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// Where to store the file on disk relative to the publish dir. OS slashes.
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TargetFilename string
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// The directory to write sub-resources of the above.
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SubResourceBaseTarget string
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// The base for creating links to sub-resources of the above.
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SubResourceBaseLink string
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// The relative permalink to this resources. Unix slashes.
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Link string
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}
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func (p TargetPaths) RelPermalink(s *helpers.PathSpec) string {
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return s.PrependBasePath(p.Link, false)
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}
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func (p TargetPaths) PermalinkForOutputFormat(s *helpers.PathSpec, f output.Format) string {
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var baseURL string
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var err error
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if f.Protocol != "" {
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baseURL, err = s.BaseURL.WithProtocol(f.Protocol)
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if err != nil {
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return ""
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}
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} else {
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baseURL = s.BaseURL.String()
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}
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return s.PermalinkForBaseURL(p.Link, baseURL)
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}
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func isHtmlIndex(s string) bool {
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return strings.HasSuffix(s, "/index.html")
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}
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func CreateTargetPaths(d TargetPathDescriptor) (tp TargetPaths) {
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if d.Type.Name == "" {
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panic("CreateTargetPath: missing type")
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}
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// Normalize all file Windows paths to simplify what's next.
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if helpers.FilePathSeparator != slash {
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d.Dir = filepath.ToSlash(d.Dir)
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d.PrefixFilePath = filepath.ToSlash(d.PrefixFilePath)
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}
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if d.URL != "" && !strings.HasPrefix(d.URL, "/") {
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// Treat this as a context relative URL
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d.ForcePrefix = true
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}
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pagePath := slash
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var (
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pagePathDir string
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link string
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linkDir string
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)
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// The top level index files, i.e. the home page etc., needs
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// the index base even when uglyURLs is enabled.
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needsBase := true
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isUgly := d.UglyURLs && !d.Type.NoUgly
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baseNameSameAsType := d.BaseName != "" && d.BaseName == d.Type.BaseName
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if d.ExpandedPermalink == "" && baseNameSameAsType {
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isUgly = true
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}
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if d.Kind != KindPage && d.URL == "" && len(d.Sections) > 0 {
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if d.ExpandedPermalink != "" {
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pagePath = pjoin(pagePath, d.ExpandedPermalink)
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} else {
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pagePath = pjoin(d.Sections...)
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}
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needsBase = false
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}
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if d.Type.Path != "" {
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pagePath = pjoin(pagePath, d.Type.Path)
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}
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if d.Kind != KindHome && d.URL != "" {
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pagePath = pjoin(pagePath, d.URL)
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if d.Addends != "" {
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pagePath = pjoin(pagePath, d.Addends)
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}
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pagePathDir = pagePath
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link = pagePath
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hasDot := strings.Contains(d.URL, ".")
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hasSlash := strings.HasSuffix(d.URL, slash)
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if hasSlash || !hasDot {
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pagePath = pjoin(pagePath, d.Type.BaseName+d.Type.MediaType.FullSuffix())
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} else if hasDot {
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pagePathDir = path.Dir(pagePathDir)
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}
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if !isHtmlIndex(pagePath) {
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link = pagePath
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} else if !hasSlash {
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link += slash
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}
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linkDir = pagePathDir
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if d.ForcePrefix {
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// Prepend language prefix if not already set in URL
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if d.PrefixFilePath != "" && !strings.HasPrefix(d.URL, slash+d.PrefixFilePath) {
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pagePath = pjoin(d.PrefixFilePath, pagePath)
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pagePathDir = pjoin(d.PrefixFilePath, pagePathDir)
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}
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if d.PrefixLink != "" && !strings.HasPrefix(d.URL, slash+d.PrefixLink) {
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link = pjoin(d.PrefixLink, link)
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linkDir = pjoin(d.PrefixLink, linkDir)
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}
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}
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} else if d.Kind == KindPage {
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if d.ExpandedPermalink != "" {
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pagePath = pjoin(pagePath, d.ExpandedPermalink)
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} else {
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if d.Dir != "" {
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pagePath = pjoin(pagePath, d.Dir)
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}
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if d.BaseName != "" {
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pagePath = pjoin(pagePath, d.BaseName)
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}
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}
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if d.Addends != "" {
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pagePath = pjoin(pagePath, d.Addends)
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}
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link = pagePath
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// TODO(bep) this should not happen after the fix in https://github.com/gohugoio/hugo/issues/4870
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// but we may need some more testing before we can remove it.
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if baseNameSameAsType {
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link = strings.TrimSuffix(link, d.BaseName)
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}
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pagePathDir = link
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link = link + slash
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linkDir = pagePathDir
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if isUgly {
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pagePath = addSuffix(pagePath, d.Type.MediaType.FullSuffix())
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} else {
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pagePath = pjoin(pagePath, d.Type.BaseName+d.Type.MediaType.FullSuffix())
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}
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if !isHtmlIndex(pagePath) {
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link = pagePath
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}
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if d.PrefixFilePath != "" {
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pagePath = pjoin(d.PrefixFilePath, pagePath)
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pagePathDir = pjoin(d.PrefixFilePath, pagePathDir)
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}
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if d.PrefixLink != "" {
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link = pjoin(d.PrefixLink, link)
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linkDir = pjoin(d.PrefixLink, linkDir)
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}
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} else {
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if d.Addends != "" {
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pagePath = pjoin(pagePath, d.Addends)
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}
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needsBase = needsBase && d.Addends == ""
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// No permalink expansion etc. for node type pages (for now)
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base := ""
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if needsBase || !isUgly {
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base = d.Type.BaseName
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}
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pagePathDir = pagePath
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link = pagePath
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linkDir = pagePathDir
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if base != "" {
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pagePath = path.Join(pagePath, addSuffix(base, d.Type.MediaType.FullSuffix()))
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} else {
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pagePath = addSuffix(pagePath, d.Type.MediaType.FullSuffix())
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}
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if !isHtmlIndex(pagePath) {
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link = pagePath
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} else {
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link += slash
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}
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if d.PrefixFilePath != "" {
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pagePath = pjoin(d.PrefixFilePath, pagePath)
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pagePathDir = pjoin(d.PrefixFilePath, pagePathDir)
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}
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if d.PrefixLink != "" {
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link = pjoin(d.PrefixLink, link)
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linkDir = pjoin(d.PrefixLink, linkDir)
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}
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}
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pagePath = pjoin(slash, pagePath)
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pagePathDir = strings.TrimSuffix(path.Join(slash, pagePathDir), slash)
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hadSlash := strings.HasSuffix(link, slash)
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link = strings.Trim(link, slash)
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if hadSlash {
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link += slash
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}
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if !strings.HasPrefix(link, slash) {
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link = slash + link
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}
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linkDir = strings.TrimSuffix(path.Join(slash, linkDir), slash)
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// if page URL is explicitly set in frontmatter,
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// preserve its value without sanitization
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if d.Kind != KindPage || d.URL == "" {
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// Note: MakePathSanitized will lower case the path if
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// disablePathToLower isn't set.
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pagePath = d.PathSpec.MakePathSanitized(pagePath)
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pagePathDir = d.PathSpec.MakePathSanitized(pagePathDir)
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link = d.PathSpec.MakePathSanitized(link)
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linkDir = d.PathSpec.MakePathSanitized(linkDir)
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}
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tp.TargetFilename = filepath.FromSlash(pagePath)
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tp.SubResourceBaseTarget = filepath.FromSlash(pagePathDir)
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tp.SubResourceBaseLink = linkDir
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tp.Link = d.PathSpec.URLizeFilename(link)
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if tp.Link == "" {
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tp.Link = slash
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}
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return
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}
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func addSuffix(s, suffix string) string {
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return strings.Trim(s, slash) + suffix
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}
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// Like path.Join, but preserves one trailing slash if present.
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func pjoin(elem ...string) string {
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hadSlash := strings.HasSuffix(elem[len(elem)-1], slash)
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joined := path.Join(elem...)
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if hadSlash && !strings.HasSuffix(joined, slash) {
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return joined + slash
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}
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return joined
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}
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