1 files changed, 154 insertions, 953 deletions

diff --git a/hugolib/content_map.go b/hugolib/content_map.go
index 8cb307691..fefa90bf1 100644
--- a/hugolib/content_map.go
+++ b/hugolib/content_map.go
@@ -18,1052 +18,253 @@ import (
 	"path"
 	"path/filepath"
 	"strings"
-	"sync"
+	"unicode"
 
-	"github.com/gohugoio/hugo/helpers"
+	"github.com/bep/logg"
+	"github.com/gohugoio/hugo/common/hugio"
+	"github.com/gohugoio/hugo/common/paths"
+	"github.com/gohugoio/hugo/identity"
+	"github.com/gohugoio/hugo/source"
 
-	"github.com/gohugoio/hugo/resources/kinds"
 	"github.com/gohugoio/hugo/resources/page"
-
-	"github.com/gohugoio/hugo/hugofs/files"
+	"github.com/gohugoio/hugo/resources/resource"
 
 	"github.com/gohugoio/hugo/hugofs"
-
-	radix "github.com/armon/go-radix"
-)
-
-// We store the branch nodes in either the `sections` or `taxonomies` tree
-// with their path as a key; Unix style slashes, a leading and trailing slash.
-//
-// E.g. "/blog/" or "/categories/funny/"
-//
-// Pages that belongs to a section are stored in the `pages` tree below
-// the section name and a branch separator, e.g. "/blog/__hb_". A page is
-// given a key using the path below the section and the base filename with no extension
-// with a leaf separator added.
-//
-// For bundled pages (/mybundle/index.md), we use the folder name.
-//
-// An example of a full page key would be "/blog/__hb_page1__hl_"
-//
-// Bundled resources are stored in the `resources` having their path prefixed
-// with the bundle they belong to, e.g.
-// "/blog/__hb_bundle__hl_data.json".
-//
-// The weighted taxonomy entries extracted from page front matter are stored in
-// the `taxonomyEntries` tree below /plural/term/page-key, e.g.
-// "/categories/funny/blog/__hb_bundle__hl_".
-const (
-	cmBranchSeparator = "__hb_"
-	cmLeafSeparator   = "__hl_"
 )
 
 // Used to mark ambiguous keys in reverse index lookups.
-var ambiguousContentNode = &contentNode{}
-
-func newContentMap(cfg contentMapConfig) *contentMap {
-	m := &contentMap{
-		cfg:             &cfg,
-		pages:           &contentTree{Name: "pages", Tree: radix.New()},
-		sections:        &contentTree{Name: "sections", Tree: radix.New()},
-		taxonomies:      &contentTree{Name: "taxonomies", Tree: radix.New()},
-		taxonomyEntries: &contentTree{Name: "taxonomyEntries", Tree: radix.New()},
-		resources:       &contentTree{Name: "resources", Tree: radix.New()},
-	}
-
-	m.pageTrees = []*contentTree{
-		m.pages, m.sections, m.taxonomies,
-	}
-
-	m.bundleTrees = []*contentTree{
-		m.pages, m.sections, m.taxonomies, m.resources,
-	}
-
-	m.branchTrees = []*contentTree{
-		m.sections, m.taxonomies,
-	}
-
-	addToReverseMap := func(k string, n *contentNode, m map[any]*contentNode) {
-		k = strings.ToLower(k)
-		existing, found := m[k]
-		if found && existing != ambiguousContentNode {
-			m[k] = ambiguousContentNode
-		} else if !found {
-			m[k] = n
-		}
-	}
+var ambiguousContentNode = &pageState{}
 
-	m.pageReverseIndex = &contentTreeReverseIndex{
-		t: []*contentTree{m.pages, m.sections, m.taxonomies},
-		contentTreeReverseIndexMap: &contentTreeReverseIndexMap{
-			initFn: func(t *contentTree, m map[any]*contentNode) {
-				t.Walk(func(s string, v any) bool {
-					n := v.(*contentNode)
-					if n.p != nil && !n.p.File().IsZero() {
-						meta := n.p.File().FileInfo().Meta()
-						if meta.Path != meta.PathFile() {
-							// Keep track of the original mount source.
-							mountKey := filepath.ToSlash(filepath.Join(meta.Module, meta.PathFile()))
-							addToReverseMap(mountKey, n, m)
-						}
-					}
-					k := strings.TrimPrefix(strings.TrimSuffix(path.Base(s), cmLeafSeparator), cmBranchSeparator)
-					addToReverseMap(k, n, m)
-					return false
-				})
-			},
-		},
-	}
-
-	return m
+var trimCutsetDotSlashSpace = func(r rune) bool {
+	return r == '.' || r == '/' || unicode.IsSpace(r)
 }
 
-type cmInsertKeyBuilder struct {
-	m *contentMap
-
-	err error
-
-	// Builder state
-	tree    *contentTree
-	baseKey string // Section or page key
-	key     string
+type contentMapConfig struct {
+	lang                 string
+	taxonomyConfig       taxonomiesConfigValues
+	taxonomyDisabled     bool
+	taxonomyTermDisabled bool
+	pageDisabled         bool
+	isRebuild            bool
 }
 
-func (b cmInsertKeyBuilder) ForPage(s string) *cmInsertKeyBuilder {
-	//fmt.Println("ForPage:", s, "baseKey:", b.baseKey, "key:", b.key, "tree:", b.tree.Name)
-	baseKey := b.baseKey
-	b.baseKey = s
-
-	if baseKey != "/" {
-		// Don't repeat the section path in the key.
-		s = strings.TrimPrefix(s, baseKey)
-	}
-	s = strings.TrimPrefix(s, "/")
+var _ contentNodeI = (*resourceSource)(nil)
 
-	switch b.tree {
-	case b.m.sections:
-		b.tree = b.m.pages
-		b.key = baseKey + cmBranchSeparator + s + cmLeafSeparator
-	case b.m.taxonomies:
-		b.key = path.Join(baseKey, s)
-	default:
-		panic("invalid state")
-	}
+type resourceSource struct {
+	path   *paths.Path
+	opener hugio.OpenReadSeekCloser
+	fi     hugofs.FileMetaInfo
 
-	return &b
+	r resource.Resource
 }
 
-func (b cmInsertKeyBuilder) ForResource(s string) *cmInsertKeyBuilder {
-	// fmt.Println("ForResource:", s, "baseKey:", b.baseKey, "key:", b.key)
-
-	baseKey := helpers.AddTrailingSlash(b.baseKey)
-	s = strings.TrimPrefix(s, baseKey)
-
-	switch b.tree {
-	case b.m.pages:
-		b.key = b.key + s
-	case b.m.sections, b.m.taxonomies:
-		b.key = b.key + cmLeafSeparator + s
-	default:
-		panic(fmt.Sprintf("invalid state: %#v", b.tree))
-	}
-	b.tree = b.m.resources
-	return &b
+func (r resourceSource) clone() *resourceSource {
+	r.r = nil
+	return &r
 }
 
-func (b *cmInsertKeyBuilder) Insert(n *contentNode) *cmInsertKeyBuilder {
-	if b.err == nil {
-		b.tree.Insert(b.Key(), n)
+func (r *resourceSource) LangIndex() int {
+	if r.r != nil && r.isPage() {
+		return r.r.(*pageState).s.languagei
 	}
-	return b
-}
 
-func (b *cmInsertKeyBuilder) Key() string {
-	switch b.tree {
-	case b.m.sections, b.m.taxonomies:
-		return cleanSectionTreeKey(b.key)
-	default:
-		return cleanTreeKey(b.key)
-	}
+	return r.fi.Meta().LangIndex
 }
 
-func (b *cmInsertKeyBuilder) DeleteAll() *cmInsertKeyBuilder {
-	if b.err == nil {
-		b.tree.DeletePrefix(b.Key())
-	}
-	return b
+func (r *resourceSource) MarkStale() {
+	resource.MarkStale(r.r)
 }
 
-func (b *cmInsertKeyBuilder) WithFile(fi hugofs.FileMetaInfo) *cmInsertKeyBuilder {
-	b.newTopLevel()
-	m := b.m
-	meta := fi.Meta()
-	p := cleanTreeKey(meta.Path)
-	bundlePath := m.getBundleDir(meta)
-	isBundle := meta.Classifier.IsBundle()
-	if isBundle {
-		panic("not implemented")
-	}
-
-	p, k := b.getBundle(p)
-	if k == "" {
-		b.err = fmt.Errorf("no bundle header found for %q", bundlePath)
-		return b
+func (r *resourceSource) resetBuildState() {
+	if rr, ok := r.r.(buildStateReseter); ok {
+		rr.resetBuildState()
 	}
-
-	id := k + m.reduceKeyPart(p, fi.Meta().Path)
-	b.tree = b.m.resources
-	b.key = id
-	b.baseKey = p
-
-	return b
-}
-
-func (b *cmInsertKeyBuilder) WithSection(s string) *cmInsertKeyBuilder {
-	s = cleanSectionTreeKey(s)
-	b.newTopLevel()
-	b.tree = b.m.sections
-	b.baseKey = s
-	b.key = s
-	return b
 }
 
-func (b *cmInsertKeyBuilder) WithTaxonomy(s string) *cmInsertKeyBuilder {
-	s = cleanSectionTreeKey(s)
-	b.newTopLevel()
-	b.tree = b.m.taxonomies
-	b.baseKey = s
-	b.key = s
-	return b
+func (r *resourceSource) isPage() bool {
+	_, ok := r.r.(page.Page)
+	return ok
 }
 
-// getBundle gets both the key to the section and the prefix to where to store
-// this page bundle and its resources.
-func (b *cmInsertKeyBuilder) getBundle(s string) (string, string) {
-	m := b.m
-	section, _ := m.getSection(s)
-
-	p := strings.TrimPrefix(s, section)
-
-	bundlePathParts := strings.Split(p, "/")
-	basePath := section + cmBranchSeparator
-
-	// Put it into an existing bundle if found.
-	for i := len(bundlePathParts) - 2; i >= 0; i-- {
-		bundlePath := path.Join(bundlePathParts[:i]...)
-		searchKey := basePath + bundlePath + cmLeafSeparator
-		if _, found := m.pages.Get(searchKey); found {
-			return section + bundlePath, searchKey
-		}
+func (r *resourceSource) GetIdentity() identity.Identity {
+	if r.r != nil {
+		return r.r.(identity.IdentityProvider).GetIdentity()
 	}
-
-	// Put it into the section bundle.
-	return section, section + cmLeafSeparator
+	return r.path
 }
 
-func (b *cmInsertKeyBuilder) newTopLevel() {
-	b.key = ""
-}
-
-type contentBundleViewInfo struct {
-	ordinal    int
-	name       viewName
-	termKey    string
-	termOrigin string
-	weight     int
-	ref        *contentNode
-}
-
-func (c *contentBundleViewInfo) kind() string {
-	if c.termKey != "" {
-		return kinds.KindTerm
-	}
-	return kinds.KindTaxonomy
+func (r *resourceSource) ForEeachIdentity(f func(identity.Identity) bool) {
+	f(r.GetIdentity())
 }
 
-func (c *contentBundleViewInfo) sections() []string {
-	if c.kind() == kinds.KindTaxonomy {
-		return []string{c.name.plural}
-	}
-
-	return []string{c.name.plural, c.termKey}
+func (r *resourceSource) Path() string {
+	return r.path.Path()
 }
 
-func (c *contentBundleViewInfo) term() string {
-	if c.termOrigin != "" {
-		return c.termOrigin
-	}
-
-	return c.termKey
+func (r *resourceSource) isContentNodeBranch() bool {
+	return false
 }
 
-type contentMap struct {
-	cfg *contentMapConfig
-
-	// View of regular pages, sections, and taxonomies.
-	pageTrees contentTrees
-
-	// View of pages, sections, taxonomies, and resources.
-	bundleTrees contentTrees
-
-	// View of sections and taxonomies.
-	branchTrees contentTrees
-
-	// Stores page bundles keyed by its path's directory or the base filename,
-	// e.g. "blog/post.md" => "/blog/post", "blog/post/index.md" => "/blog/post"
-	// These are the "regular pages" and all of them are bundles.
-	pages *contentTree
-
-	// A reverse index used as a fallback in GetPage.
-	// There are currently two cases where this is used:
-	// 1. Short name lookups in ref/relRef, e.g. using only "mypage.md" without a path.
-	// 2. Links resolved from a remounted content directory. These are restricted to the same module.
-	// Both of the above cases can  result in ambiguous lookup errors.
-	pageReverseIndex *contentTreeReverseIndex
-
-	// Section nodes.
-	sections *contentTree
+var _ contentNodeI = (*resourceSources)(nil)
 
-	// Taxonomy nodes.
-	taxonomies *contentTree
+type resourceSources []*resourceSource
 
-	// Pages in a taxonomy.
-	taxonomyEntries *contentTree
-
-	// Resources stored per bundle below a common prefix, e.g. "/blog/post__hb_".
-	resources *contentTree
-}
-
-func (m *contentMap) AddFiles(fis ...hugofs.FileMetaInfo) error {
-	for _, fi := range fis {
-		if err := m.addFile(fi); err != nil {
-			return err
+func (n resourceSources) MarkStale() {
+	for _, r := range n {
+		if r != nil {
+			r.MarkStale()
 		}
 	}
-
-	return nil
 }
 
-func (m *contentMap) AddFilesBundle(header hugofs.FileMetaInfo, resources ...hugofs.FileMetaInfo) error {
-	var (
-		meta       = header.Meta()
-		classifier = meta.Classifier
-		isBranch   = classifier == files.ContentClassBranch
-		bundlePath = m.getBundleDir(meta)
-
-		n = m.newContentNodeFromFi(header)
-		b = m.newKeyBuilder()
-
-		section string
-	)
-
-	if isBranch {
-		// Either a section or a taxonomy node.
-		section = bundlePath
-		if tc := m.cfg.getTaxonomyConfig(section); !tc.IsZero() {
-			term := strings.TrimPrefix(strings.TrimPrefix(section, "/"+tc.plural), "/")
-
-			n.viewInfo = &contentBundleViewInfo{
-				name:       tc,
-				termKey:    term,
-				termOrigin: term,
-			}
-
-			n.viewInfo.ref = n
-			b.WithTaxonomy(section).Insert(n)
-		} else {
-			b.WithSection(section).Insert(n)
-		}
-	} else {
-		// A regular page. Attach it to its section.
-		section, _ = m.getOrCreateSection(n, bundlePath)
-		b = b.WithSection(section).ForPage(bundlePath).Insert(n)
-	}
-
-	if m.cfg.isRebuild {
-		// The resource owner will be either deleted or overwritten on rebuilds,
-		// but make sure we handle deletion of resources (images etc.) as well.
-		b.ForResource("").DeleteAll()
-	}
-
-	for _, r := range resources {
-		rb := b.ForResource(cleanTreeKey(r.Meta().Path))
-		rb.Insert(&contentNode{fi: r})
-	}
-
-	return nil
-}
-
-func (m *contentMap) CreateMissingNodes() error {
-	// Create missing home and root sections
-	rootSections := make(map[string]any)
-	trackRootSection := func(s string, b *contentNode) {
-		parts := strings.Split(s, "/")
-		if len(parts) > 2 {
-			root := strings.TrimSuffix(parts[1], cmBranchSeparator)
-			if root != "" {
-				if _, found := rootSections[root]; !found {
-					rootSections[root] = b
-				}
-			}
-		}
-	}
-
-	m.sections.Walk(func(s string, v any) bool {
-		n := v.(*contentNode)
-
-		if s == "/" {
-			return false
-		}
-
-		trackRootSection(s, n)
-		return false
-	})
-
-	m.pages.Walk(func(s string, v any) bool {
-		trackRootSection(s, v.(*contentNode))
-		return false
-	})
-
-	if _, found := rootSections["/"]; !found {
-		rootSections["/"] = true
-	}
-
-	for sect, v := range rootSections {
-		var sectionPath string
-		if n, ok := v.(*contentNode); ok && n.path != "" {
-			sectionPath = n.path
-			firstSlash := strings.Index(sectionPath, "/")
-			if firstSlash != -1 {
-				sectionPath = sectionPath[:firstSlash]
-			}
-		}
-		sect = cleanSectionTreeKey(sect)
-		_, found := m.sections.Get(sect)
-		if !found {
-			m.sections.Insert(sect, &contentNode{path: sectionPath})
-		}
-	}
-
-	for _, view := range m.cfg.taxonomyConfig {
-		s := cleanSectionTreeKey(view.plural)
-		_, found := m.taxonomies.Get(s)
-		if !found {
-			b := &contentNode{
-				viewInfo: &contentBundleViewInfo{
-					name: view,
-				},
-			}
-			b.viewInfo.ref = b
-			m.taxonomies.Insert(s, b)
-		}
-	}
-
-	return nil
-}
-
-func (m *contentMap) getBundleDir(meta *hugofs.FileMeta) string {
-	dir := cleanTreeKey(filepath.Dir(meta.Path))
-
-	switch meta.Classifier {
-	case files.ContentClassContent:
-		return path.Join(dir, meta.TranslationBaseName)
-	default:
-		return dir
-	}
+func (n resourceSources) Path() string {
+	panic("not supported")
 }
 
-func (m *contentMap) newContentNodeFromFi(fi hugofs.FileMetaInfo) *contentNode {
-	return &contentNode{
-		fi:   fi,
-		path: strings.TrimPrefix(filepath.ToSlash(fi.Meta().Path), "/"),
-	}
+func (n resourceSources) isContentNodeBranch() bool {
+	return false
 }
 
-func (m *contentMap) getFirstSection(s string) (string, *contentNode) {
-	s = helpers.AddTrailingSlash(s)
-	for {
-		k, v, found := m.sections.LongestPrefix(s)
-
-		if !found {
-			return "", nil
+func (n resourceSources) resetBuildState() {
+	for _, r := range n {
+		if r != nil {
+			r.resetBuildState()
 		}
-
-		if strings.Count(k, "/") <= 2 {
-			return k, v.(*contentNode)
-		}
-
-		s = helpers.AddTrailingSlash(path.Dir(strings.TrimSuffix(s, "/")))
-
 	}
 }
 
-func (m *contentMap) newKeyBuilder() *cmInsertKeyBuilder {
-	return &cmInsertKeyBuilder{m: m}
-}
-
-func (m *contentMap) getOrCreateSection(n *contentNode, s string) (string, *contentNode) {
-	level := strings.Count(s, "/")
-	k, b := m.getSection(s)
-
-	mustCreate := false
-
-	if k == "" {
-		mustCreate = true
-	} else if level > 1 && k == "/" {
-		// We found the home section, but this page needs to be placed in
-		// the root, e.g. "/blog", section.
-		mustCreate = true
-	}
-
-	if mustCreate {
-		k = cleanSectionTreeKey(s[:strings.Index(s[1:], "/")+1])
-
-		b = &contentNode{
-			path: n.rootSection(),
+func (n resourceSources) GetIdentity() identity.Identity {
+	for _, r := range n {
+		if r != nil {
+			return r.GetIdentity()
 		}
-
-		m.sections.Insert(k, b)
-	}
-
-	return k, b
-}
-
-func (m *contentMap) getPage(section, name string) *contentNode {
-	section = helpers.AddTrailingSlash(section)
-	key := section + cmBranchSeparator + name + cmLeafSeparator
-
-	v, found := m.pages.Get(key)
-	if found {
-		return v.(*contentNode)
 	}
 	return nil
 }
 
-func (m *contentMap) getSection(s string) (string, *contentNode) {
-	s = helpers.AddTrailingSlash(path.Dir(strings.TrimSuffix(s, "/")))
-
-	k, v, found := m.sections.LongestPrefix(s)
-
-	if found {
-		return k, v.(*contentNode)
-	}
-	return "", nil
-}
-
-func (m *contentMap) getTaxonomyParent(s string) (string, *contentNode) {
-	s = helpers.AddTrailingSlash(path.Dir(strings.TrimSuffix(s, "/")))
-	k, v, found := m.taxonomies.LongestPrefix(s)
-
-	if found {
-		return k, v.(*contentNode)
-	}
-
-	v, found = m.sections.Get("/")
-	if found {
-		return s, v.(*contentNode)
-	}
-
-	return "", nil
-}
-
-func (m *contentMap) addFile(fi hugofs.FileMetaInfo) error {
-	b := m.newKeyBuilder()
-	return b.WithFile(fi).Insert(m.newContentNodeFromFi(fi)).err
-}
-
-func cleanTreeKey(k string) string {
-	k = "/" + strings.ToLower(strings.Trim(path.Clean(filepath.ToSlash(k)), "./"))
-	return k
-}
-
-func cleanSectionTreeKey(k string) string {
-	k = cleanTreeKey(k)
-	if k != "/" {
-		k += "/"
-	}
-
-	return k
-}
-
-func (m *contentMap) onSameLevel(s1, s2 string) bool {
-	return strings.Count(s1, "/") == strings.Count(s2, "/")
-}
-
-func (m *contentMap) deleteBundleMatching(matches func(b *contentNode) bool) {
-	// Check sections first
-	s := m.sections.getMatch(matches)
-	if s != "" {
-		m.deleteSectionByPath(s)
-		return
-	}
-
-	s = m.pages.getMatch(matches)
-	if s != "" {
-		m.deletePage(s)
-		return
-	}
-
-	s = m.resources.getMatch(matches)
-	if s != "" {
-		m.resources.Delete(s)
-	}
-}
-
-// Deletes any empty root section that's not backed by a content file.
-func (m *contentMap) deleteOrphanSections() {
-	var sectionsToDelete []string
-
-	m.sections.Walk(func(s string, v any) bool {
-		n := v.(*contentNode)
-
-		if n.fi != nil {
-			// Section may be empty, but is backed by a content file.
-			return false
-		}
-
-		if s == "/" || strings.Count(s, "/") > 2 {
-			return false
-		}
-
-		prefixBundle := s + cmBranchSeparator
-
-		if !(m.sections.hasBelow(s) || m.pages.hasBelow(prefixBundle) || m.resources.hasBelow(prefixBundle)) {
-			sectionsToDelete = append(sectionsToDelete, s)
-		}
-
-		return false
-	})
-
-	for _, s := range sectionsToDelete {
-		m.sections.Delete(s)
-	}
-}
-
-func (m *contentMap) deletePage(s string) {
-	m.pages.DeletePrefix(s)
-	m.resources.DeletePrefix(s)
-}
-
-func (m *contentMap) deleteSectionByPath(s string) {
-	if !strings.HasSuffix(s, "/") {
-		panic("section must end with a slash")
-	}
-	if !strings.HasPrefix(s, "/") {
-		panic("section must start with a slash")
-	}
-	m.sections.DeletePrefix(s)
-	m.pages.DeletePrefix(s)
-	m.resources.DeletePrefix(s)
-}
-
-func (m *contentMap) deletePageByPath(s string) {
-	m.pages.Walk(func(s string, v any) bool {
-		fmt.Println("S", s)
-
-		return false
-	})
-}
-
-func (m *contentMap) deleteTaxonomy(s string) {
-	m.taxonomies.DeletePrefix(s)
-}
-
-func (m *contentMap) reduceKeyPart(dir, filename string) string {
-	dir, filename = filepath.ToSlash(dir), filepath.ToSlash(filename)
-	dir, filename = strings.TrimPrefix(dir, "/"), strings.TrimPrefix(filename, "/")
-
-	return strings.TrimPrefix(strings.TrimPrefix(filename, dir), "/")
-}
-
-func (m *contentMap) splitKey(k string) []string {
-	if k == "" || k == "/" {
-		return nil
-	}
-
-	parts := strings.Split(k, "/")[1:]
-	if len(parts) == 0 {
-		return nil
-	}
-	if parts[len(parts)-1] == "" {
-		parts = parts[:len(parts)-1]
-	}
-	return parts
-}
-
-func (m *contentMap) testDump() string {
-	var sb strings.Builder
-
-	for i, r := range []*contentTree{m.pages, m.sections, m.resources} {
-		sb.WriteString(fmt.Sprintf("Tree %d:\n", i))
-		r.Walk(func(s string, v any) bool {
-			sb.WriteString("\t" + s + "\n")
-			return false
-		})
-	}
-
-	for i, r := range []*contentTree{m.pages, m.sections} {
-		r.Walk(func(s string, v any) bool {
-			c := v.(*contentNode)
-			cpToString := func(c *contentNode) string {
-				var sb strings.Builder
-				if c.p != nil {
-					sb.WriteString("|p:" + c.p.Title())
-				}
-				if c.fi != nil {
-					sb.WriteString("|f:" + filepath.ToSlash(c.fi.Meta().Path))
-				}
-				return sb.String()
+func (n resourceSources) ForEeachIdentity(f func(identity.Identity) bool) {
+	for _, r := range n {
+		if r != nil {
+			if f(r.GetIdentity()) {
+				return
 			}
-			sb.WriteString(path.Join(m.cfg.lang, r.Name) + s + cpToString(c) + "\n")
-
-			resourcesPrefix := s
-
-			if i == 1 {
-				resourcesPrefix += cmLeafSeparator
-
-				m.pages.WalkPrefix(s+cmBranchSeparator, func(s string, v any) bool {
-					sb.WriteString("\t - P: " + filepath.ToSlash((v.(*contentNode).fi.(hugofs.FileMetaInfo)).Meta().Filename) + "\n")
-					return false
-				})
-			}
-
-			m.resources.WalkPrefix(resourcesPrefix, func(s string, v any) bool {
-				sb.WriteString("\t - R: " + filepath.ToSlash((v.(*contentNode).fi.(hugofs.FileMetaInfo)).Meta().Filename) + "\n")
-				return false
-			})
-
-			return false
-		})
+		}
 	}
-
-	return sb.String()
-}
-
-type contentMapConfig struct {
-	lang                 string
-	taxonomyConfig       []viewName
-	taxonomyDisabled     bool
-	taxonomyTermDisabled bool
-	pageDisabled         bool
-	isRebuild            bool
 }
 
 func (cfg contentMapConfig) getTaxonomyConfig(s string) (v viewName) {
-	s = strings.TrimPrefix(s, "/")
-	if s == "" {
-		return
-	}
-	for _, n := range cfg.taxonomyConfig {
-		if strings.HasPrefix(s, n.plural) {
+	for _, n := range cfg.taxonomyConfig.views {
+		if strings.HasPrefix(s, n.pluralTreeKey) {
 			return n
 		}
 	}
-
 	return
 }
 
-type contentNode struct {
-	p *pageState
-
-	// Set for taxonomy nodes.
-	viewInfo *contentBundleViewInfo
-
-	// Set if source is a file.
-	// We will soon get other sources.
-	fi hugofs.FileMetaInfo
-
-	// The source path. Unix slashes. No leading slash.
-	path string
-}
-
-func (b *contentNode) rootSection() string {
-	if b.path == "" {
-		return ""
-	}
-	firstSlash := strings.Index(b.path, "/")
-	if firstSlash == -1 {
-		return b.path
-	}
-	return b.path[:firstSlash]
-}
-
-type contentTree struct {
-	Name string
-	*radix.Tree
-}
-
-type contentTrees []*contentTree
-
-func (t contentTrees) DeletePrefix(prefix string) int {
-	var count int
-	for _, tree := range t {
-		tree.Walk(func(s string, v any) bool {
-			return false
-		})
-		count += tree.DeletePrefix(prefix)
+func (m *pageMap) AddFi(fi hugofs.FileMetaInfo) error {
+	if fi.IsDir() {
+		return nil
 	}
-	return count
-}
 
-type contentTreeNodeCallback func(s string, n *contentNode) bool
-
-func newContentTreeFilter(fn func(n *contentNode) bool) contentTreeNodeCallback {
-	return func(s string, n *contentNode) bool {
-		return fn(n)
+	meta := fi.Meta()
+	if m.s.conf.IsLangDisabled(meta.Lang) {
+		return nil
 	}
-}
 
-var (
-	contentTreeNoListAlwaysFilter = func(s string, n *contentNode) bool {
-		if n.p == nil {
-			return true
-		}
-		return n.p.m.noListAlways()
-	}
+	insertResource := func(fim hugofs.FileMetaInfo) error {
+		pi := fi.Meta().PathInfo
+		key := pi.Base()
+		tree := m.treeResources
 
-	contentTreeNoRenderFilter = func(s string, n *contentNode) bool {
-		if n.p == nil {
-			return true
-		}
-		return n.p.m.noRender()
-	}
+		commit := tree.Lock(true)
+		defer commit()
 
-	contentTreeNoLinkFilter = func(s string, n *contentNode) bool {
-		if n.p == nil {
-			return true
+		r := func() (hugio.ReadSeekCloser, error) {
+			return fim.Meta().Open()
 		}
-		return n.p.m.noLink()
-	}
-)
 
-func (c *contentTree) WalkQuery(query pageMapQuery, walkFn contentTreeNodeCallback) {
-	filter := query.Filter
-	if filter == nil {
-		filter = contentTreeNoListAlwaysFilter
-	}
-	if query.Prefix != "" {
-		c.WalkBelow(query.Prefix, func(s string, v any) bool {
-			n := v.(*contentNode)
-			if filter != nil && filter(s, n) {
-				return false
+		var rs *resourceSource
+		if pi.IsContent() {
+			// Create the page now as we need it at assemembly time.
+			// The other resources are created if needed.
+			pageResource, err := m.s.h.newPage(
+				&pageMeta{
+					f:        source.NewFileInfo(fim),
+					pathInfo: pi,
+					bundled:  true,
+				},
+			)
+			if err != nil {
+				return err
 			}
-			return walkFn(s, n)
-		})
-
-		return
-	}
-
-	c.Walk(func(s string, v any) bool {
-		n := v.(*contentNode)
-		if filter != nil && filter(s, n) {
-			return false
+			rs = &resourceSource{r: pageResource}
+		} else {
+			rs = &resourceSource{path: pi, opener: r, fi: fim}
 		}
-		return walkFn(s, n)
-	})
-}
 
-func (c contentTrees) WalkRenderable(fn contentTreeNodeCallback) {
-	query := pageMapQuery{Filter: contentTreeNoRenderFilter}
-	for _, tree := range c {
-		tree.WalkQuery(query, fn)
-	}
-}
-
-func (c contentTrees) WalkLinkable(fn contentTreeNodeCallback) {
-	query := pageMapQuery{Filter: contentTreeNoLinkFilter}
-	for _, tree := range c {
-		tree.WalkQuery(query, fn)
-	}
-}
+		tree.InsertIntoValuesDimension(key, rs)
 
-func (c contentTrees) Walk(fn contentTreeNodeCallback) {
-	for _, tree := range c {
-		tree.Walk(func(s string, v any) bool {
-			n := v.(*contentNode)
-			return fn(s, n)
-		})
+		return nil
 	}
-}
 
-func (c contentTrees) WalkPrefix(prefix string, fn contentTreeNodeCallback) {
-	for _, tree := range c {
-		tree.WalkPrefix(prefix, func(s string, v any) bool {
-			n := v.(*contentNode)
-			return fn(s, n)
-		})
-	}
-}
+	pi := meta.PathInfo
 
-// WalkBelow walks the tree below the given prefix, i.e. it skips the
-// node with the given prefix as key.
-func (c *contentTree) WalkBelow(prefix string, fn radix.WalkFn) {
-	c.Tree.WalkPrefix(prefix, func(s string, v any) bool {
-		if s == prefix {
-			return false
+	switch pi.BundleType() {
+	case paths.PathTypeFile, paths.PathTypeContentResource:
+		m.s.Log.Trace(logg.StringFunc(
+			func() string {
+				return fmt.Sprintf("insert resource: %q", fi.Meta().Filename)
+			},
+		))
+		if err := insertResource(fi); err != nil {
+			return err
 		}
-		return fn(s, v)
-	})
-}
-
-func (c *contentTree) getMatch(matches func(b *contentNode) bool) string {
-	var match string
-	c.Walk(func(s string, v any) bool {
-		n, ok := v.(*contentNode)
-		if !ok {
-			return false
+	default:
+		m.s.Log.Trace(logg.StringFunc(
+			func() string {
+				return fmt.Sprintf("insert bundle: %q", fi.Meta().Filename)
+			},
+		))
+		// A content file.
+		p, err := m.s.h.newPage(
+			&pageMeta{
+				f:        source.NewFileInfo(fi),
+				pathInfo: pi,
+				bundled:  false,
+			},
+		)
+		if err != nil {
+			return err
 		}
-
-		if matches(n) {
-			match = s
-			return true
+		if p == nil {
+			// Disabled page.
+			return nil
 		}
 
-		return false
-	})
-
-	return match
-}
-
-func (c *contentTree) hasBelow(s1 string) bool {
-	var t bool
-	c.WalkBelow(s1, func(s2 string, v any) bool {
-		t = true
-		return true
-	})
-	return t
-}
-
-func (c *contentTree) printKeys() {
-	c.Walk(func(s string, v any) bool {
-		fmt.Println(s)
-		return false
-	})
-}
-
-func (c *contentTree) printKeysPrefix(prefix string) {
-	c.WalkPrefix(prefix, func(s string, v any) bool {
-		fmt.Println(s)
-		return false
-	})
-}
-
-// contentTreeRef points to a node in the given tree.
-type contentTreeRef struct {
-	m   *pageMap
-	t   *contentTree
-	n   *contentNode
-	key string
-}
-
-func (c *contentTreeRef) getCurrentSection() (string, *contentNode) {
-	if c.isSection() {
-		return c.key, c.n
-	}
-	return c.getSection()
-}
-
-func (c *contentTreeRef) isSection() bool {
-	return c.t == c.m.sections
-}
-
-func (c *contentTreeRef) getSection() (string, *contentNode) {
-	if c.t == c.m.taxonomies {
-		return c.m.getTaxonomyParent(c.key)
-	}
-	return c.m.getSection(c.key)
-}
-
-func (c *contentTreeRef) getPages() page.Pages {
-	var pas page.Pages
-	c.m.collectPages(
-		pageMapQuery{
-			Prefix: c.key + cmBranchSeparator,
-			Filter: c.n.p.m.getListFilter(true),
-		},
-		func(c *contentNode) {
-			pas = append(pas, c.p)
-		},
-	)
-	page.SortByDefault(pas)
-
-	return pas
-}
-
-func (c *contentTreeRef) getPagesRecursive() page.Pages {
-	var pas page.Pages
+		m.treePages.InsertWithLock(pi.Base(), p)
 
-	query := pageMapQuery{
-		Filter: c.n.p.m.getListFilter(true),
 	}
-
-	query.Prefix = c.key
-	c.m.collectPages(query, func(c *contentNode) {
-		pas = append(pas, c.p)
-	})
-
-	page.SortByDefault(pas)
-
-	return pas
+	return nil
 }
 
-func (c *contentTreeRef) getPagesAndSections() page.Pages {
-	var pas page.Pages
-
-	query := pageMapQuery{
-		Filter: c.n.p.m.getListFilter(true),
-		Prefix: c.key,
+// The home page is represented with the zero string.
+// All other keys starts with a leading slash. No trailing slash.
+// Slashes are Unix-style.
+func cleanTreeKey(elem ...string) string {
+	var s string
+	if len(elem) > 0 {
+		s = elem[0]
+		if len(elem) > 1 {
+			s = path.Join(elem...)
+		}
 	}
-
-	c.m.collectPagesAndSections(query, func(c *contentNode) {
-		pas = append(pas, c.p)
-	})
-
-	page.SortByDefault(pas)
-
-	return pas
-}
-
-func (c *contentTreeRef) getSections() page.Pages {
-	var pas page.Pages
-
-	query := pageMapQuery{
-		Filter: c.n.p.m.getListFilter(true),
-		Prefix: c.key,
+	s = strings.TrimFunc(s, trimCutsetDotSlashSpace)
+	s = filepath.ToSlash(strings.ToLower(paths.Sanitize(s)))
+	if s == "" || s == "/" {
+		return ""
 	}
-
-	c.m.collectSections(query, func(c *contentNode) {
-		pas = append(pas, c.p)
-	})
-
-	page.SortByDefault(pas)
-
-	return pas
-}
-
-type contentTreeReverseIndex struct {
-	t []*contentTree
-	*contentTreeReverseIndexMap
-}
-
-type contentTreeReverseIndexMap struct {
-	m      map[any]*contentNode
-	init   sync.Once
-	initFn func(*contentTree, map[any]*contentNode)
-}
-
-func (c *contentTreeReverseIndex) Reset() {
-	c.contentTreeReverseIndexMap = &contentTreeReverseIndexMap{
-		initFn: c.initFn,
+	if s[0] != '/' {
+		s = "/" + s
 	}
-}
-
-func (c *contentTreeReverseIndex) Get(key any) *contentNode {
-	c.init.Do(func() {
-		c.m = make(map[any]*contentNode)
-		for _, tree := range c.t {
-			c.initFn(tree, c.m)
-		}
-	})
-	return c.m[key]
+	return s
 }