Implement backlinks core (index, i12n and viewing)

hyphae/backlinks.go

@@ -0,0 +1,153 @@
+package hyphae
+
+import (
+	"os"
+	"sync"
+
+	"github.com/bouncepaw/mycorrhiza/util"
+
+	"github.com/bouncepaw/mycomarkup"
+	"github.com/bouncepaw/mycomarkup/blocks"
+	"github.com/bouncepaw/mycomarkup/links"
+	"github.com/bouncepaw/mycomarkup/mycocontext"
+)
+
+// Using set here seems like the most appropriate solution
+type linkSet map[string]struct{}
+
+var backlinkIndex = make(map[string]linkSet)
+var backlinkIndexMutex = sync.Mutex{}
+
+// IndexBacklinks traverses all text hyphae, extracts links from them and forms an initial index
+func IndexBacklinks() {
+	// It is safe to ignore the mutex, because there is only one worker.
+	src := FilterTextHyphae(YieldExistingHyphae())
+	for h := range src {
+		fileContentsT, errT := os.ReadFile(h.TextPath)
+		if errT == nil {
+			links := ExtractHyphaLinksFromContent(h.Name, string(fileContentsT))
+			for _, link := range links {
+				if _, exists := backlinkIndex[link]; !exists {
+					backlinkIndex[link] = make(linkSet)
+				}
+				backlinkIndex[link][h.Name] = struct{}{}
+			}
+		}
+	}
+}
+
+func YieldHyphaBacklinks(query string) <-chan string {
+	hyphaName := util.CanonicalName(query)
+	out := make(chan string)
+	sorted := PathographicSort(out)
+	go func() {
+		links := backlinkIndex[hyphaName]
+		for link := range links {
+			out <- link
+		}
+		close(out)
+	}()
+	return sorted
+}
+
+// YieldHyphaLinks extracts hypha links from a desired hypha and iterates over them
+func YieldHyphaLinks(query string) <-chan string {
+	// That is merely a debug function, but it could be useful.
+	// Should we extract them into link-specific subfile? -- chekoopa
+	hyphaName := util.CanonicalName(query)
+	out := make(chan string)
+	go func() {
+		links := ExtractHyphaLinks(hyphaName)
+		for _, link := range links {
+			out <- link
+		}
+		close(out)
+	}()
+	return out
+}
+
+// ExtractHyphaLinks extracts hypha links from a desired hypha
+func ExtractHyphaLinks(hyphaName string) []string {
+	var h = ByName(hyphaName)
+	if h.Exists {
+		fileContentsT, errT := os.ReadFile(h.TextPath)
+		if errT == nil {
+			return ExtractHyphaLinksFromContent(hyphaName, string(fileContentsT))
+		}
+	}
+	return make([]string, 0)
+}
+
+// ExtractHyphaLinksFromContent extracts hypha links from a provided text
+func ExtractHyphaLinksFromContent(hyphaName string, contents string) []string {
+	ctx, _ := mycocontext.ContextFromStringInput(hyphaName, contents)
+	linkVisitor, getLinks := LinkVisitor(ctx)
+	mycomarkup.BlockTree(ctx, linkVisitor)
+	foundLinks := getLinks()
+	var result []string
+	for _, link := range foundLinks {
+		if link.OfKind(links.LinkLocalHypha) {
+			result = append(result, link.TargetHypha())
+		}
+	}
+	return result
+}
+
+// LinkVisitor creates a visitor which extracts all the links
+func LinkVisitor(ctx mycocontext.Context) (
+	visitor func(block blocks.Block),
+	result func() []links.Link,
+) {
+	var (
+		collected []links.Link
+	)
+	var extractBlock func(block blocks.Block)
+	extractBlock = func(block blocks.Block) {
+		// fmt.Println(reflect.TypeOf(block))
+		switch b := block.(type) {
+		case blocks.Paragraph:
+			extractBlock(b.Formatted)
+		case blocks.Heading:
+			extractBlock(b.GetContents())
+		case blocks.List:
+			for _, item := range b.Items {
+				for _, sub := range item.Contents {
+					extractBlock(sub)
+				}
+			}
+		case blocks.Img:
+			for _, entry := range b.Entries {
+				extractBlock(entry)
+			}
+		case blocks.ImgEntry:
+			collected = append(collected, *b.Srclink)
+		case blocks.Transclusion:
+			link := *links.From(b.Target, "", ctx.HyphaName())
+			collected = append(collected, link)
+		case blocks.LaunchPad:
+			for _, rocket := range b.Rockets {
+				extractBlock(rocket)
+			}
+		case blocks.Formatted:
+			for _, line := range b.Lines {
+				for _, span := range line {
+					switch s := span.(type) {
+					case blocks.InlineLink:
+						collected = append(collected, *s.Link)
+					}
+				}
+			}
+		case blocks.RocketLink:
+			if !b.IsEmpty {
+				collected = append(collected, b.Link)
+			}
+		}
+	}
+	visitor = func(block blocks.Block) {
+		extractBlock(block)
+	}
+	result = func() []links.Link {
+		return collected
+	}
+	return
+}

main.go

@@ -37,6 +37,7 @@ func main() {
 
 	// Init the subsystems:
 	hyphae.Index(files.HyphaeDir())
+	hyphae.IndexBacklinks()
 	user.InitUserDatabase()
 	history.Start()
 	history.InitGitRepo()

static/default.css

@@ -11,10 +11,10 @@
 .modal__title_small { font-size: 1.5rem; }
 .modal__confirmation-msg { margin: 0 0 .5rem 0; }
 
-.hypha-list, .title-search__results { padding-left: 0; }
+.hypha-list, .title-search__results, .backlinks__list { padding-left: 0; }
-.hypha-list__entry, .title-search__entry { list-style-type: none; }
+.hypha-list__entry, .title-search__entry, .backlinks__entry { list-style-type: none; }
-.hypha-list__link, .title-search__link { text-decoration: none; display: inline-block; padding: .25rem; }
+.hypha-list__link, .title-search__link, .backlinks__link { text-decoration: none; display: inline-block; padding: .25rem; }
-.hypha-list__link:hover, .title-search__link:hover { text-decoration: underline; }
+.hypha-list__link:hover, .title-search__link:hover, .backlinks__link:hover { text-decoration: underline; }
 .hypha-list__amnt-type { font-size: smaller; color: #999; }
 
 /* General element positions, from small to big */
@@ -23,8 +23,6 @@
 header { width: 100%; margin-bottom: 1rem; }
 
 .layout-card li { list-style-type: none; }
-.backlinks__list { padding: 0; margin: 0; }
-.backlinks__link { text-decoration: none; display: block; padding: .25rem; padding-left: 1.25rem; }
 
 @media screen and (max-width: 800px) {
 	.amnt-grid { grid-template-columns: 1fr; }
@@ -65,13 +63,9 @@ header { width: 100%; margin-bottom: 1rem; }
 	.layout { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); }
 	.layout-card {max-width: 18rem;}
 	.main-width { margin: 0 auto; }
-	.backlinks { grid-column: 1 / span 1; margin-right: 0; }
 	main { grid-column: 2 / span 1; }
 	.sibling-hyphae, .edit-toolbar, .help-topics { grid-column: 3 / span 1; margin-left: 0; }
 	.edit-toolbar__buttons { grid-template-columns: 1fr; }
-
-	.backlinks__title { text-align: right; }
-	.backlinks__link { text-align: right; padding-right: 1.25rem; padding-left: .25rem; }
 }
 
 @media screen and (min-width: 1400px) {
@@ -221,7 +215,7 @@ blockquote { border-left: 2px #999 solid; }
 .upload-amnt { border: #eee 1px solid; }
 td { border: #ddd 1px solid; }
 
-.sibling-hyphae__link:hover, .backlinks__link:hover { background-color: #eee; }
+.sibling-hyphae__link:hover { background-color: #eee; }
 
 /* Dark theme! */
 @media (prefers-color-scheme: dark) {
@@ -231,7 +225,7 @@ main,  article, header, .layout-card { background-color: #343434; color: #ddd; }
 a, .wikilink_external { color: #f1fa8c; }
 a:visited, .wikilink_external:visited { color: #ffb86c; }
 .wikilink_new, .wikilink_new:visited { color: #dd4444; }
-.subhyphae__link:hover, .sibling-hyphae__link:hover, .backlinks__link:hover { background-color: #444; }
+.subhyphae__link:hover, .sibling-hyphae__link:hover { background-color: #444; }
 
 .prevnext__el, .prevnext__el:visited { color: #ddd; }
 

views/nav.qtpl

@@ -22,6 +22,7 @@
 		{%= hyphaInfoEntry(h, u, "delete-ask", "Delete") %}
 		{%= hyphaInfoEntry(h, u, "text", "View markup") %}
 		{%= hyphaInfoEntry(h, u, "attachment", "Manage attachment") %}
+		{%= hyphaInfoEntry(h, u, "backlinks", "Backlinks") %}
 	</ul>
 </nav>
 {% endfunc %}

views/nav.qtpl.go

@@ -128,133 +128,138 @@ func streamhyphaInfo(qw422016 *qt422016.Writer, rq *http.Request, h *hyphae.Hyph
 //line views/nav.qtpl:24
 	streamhyphaInfoEntry(qw422016, h, u, "attachment", "Manage attachment")
 //line views/nav.qtpl:24
+	qw422016.N().S(`
+		`)
+//line views/nav.qtpl:25
+	streamhyphaInfoEntry(qw422016, h, u, "backlinks", "Backlinks")
+//line views/nav.qtpl:25
 	qw422016.N().S(`
 	</ul>
 </nav>
 `)
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 }
 
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 func writehyphaInfo(qq422016 qtio422016.Writer, rq *http.Request, h *hyphae.Hypha) {
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 	streamhyphaInfo(qw422016, rq, h)
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 	qt422016.ReleaseWriter(qw422016)
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 }
 
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 func hyphaInfo(rq *http.Request, h *hyphae.Hypha) string {
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 	writehyphaInfo(qb422016, rq, h)
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 	qs422016 := string(qb422016.B)
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 	return qs422016
-//line views/nav.qtpl:27
+//line views/nav.qtpl:28
 }
 
-//line views/nav.qtpl:29
+//line views/nav.qtpl:30
 func streamsiblingHyphaeHTML(qw422016 *qt422016.Writer, siblings string) {
-//line views/nav.qtpl:29
+//line views/nav.qtpl:30
 	qw422016.N().S(`
 <aside class="sibling-hyphae layout-card">
 	<h2 class="sibling-hyphae__title layout-card__title">Sibling hyphae</h2>
 	`)
-//line views/nav.qtpl:32
+//line views/nav.qtpl:33
 	qw422016.N().S(siblings)
-//line views/nav.qtpl:32
+//line views/nav.qtpl:33
 	qw422016.N().S(`
 </aside>
 `)
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 }
 
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 func writesiblingHyphaeHTML(qq422016 qtio422016.Writer, siblings string) {
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 	streamsiblingHyphaeHTML(qw422016, siblings)
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 	qt422016.ReleaseWriter(qw422016)
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 }
 
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 func siblingHyphaeHTML(siblings string) string {
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 	writesiblingHyphaeHTML(qb422016, siblings)
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 	qs422016 := string(qb422016.B)
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 	return qs422016
-//line views/nav.qtpl:34
+//line views/nav.qtpl:35
 }
 
-//line views/nav.qtpl:36
+//line views/nav.qtpl:37
 func StreamSubhyphaeHTML(qw422016 *qt422016.Writer, subhyphae string) {
-//line views/nav.qtpl:36
+//line views/nav.qtpl:37
 	qw422016.N().S(`
 `)
-//line views/nav.qtpl:37
+//line views/nav.qtpl:38
 	if strings.TrimSpace(subhyphae) != "" {
-//line views/nav.qtpl:37
+//line views/nav.qtpl:38
 		qw422016.N().S(`
 <section class="subhyphae">
 	<h2 class="subhyphae__title">Subhyphae</h2>
 	<nav class="subhyphae__nav">
 		<ul class="subhyphae__list">
 		`)
-//line views/nav.qtpl:42
+//line views/nav.qtpl:43
 		qw422016.N().S(subhyphae)
-//line views/nav.qtpl:42
+//line views/nav.qtpl:43
 		qw422016.N().S(`
 		</ul>
 	</nav>
 </section>
 `)
-//line views/nav.qtpl:46
+//line views/nav.qtpl:47
 	}
-//line views/nav.qtpl:46
+//line views/nav.qtpl:47
 	qw422016.N().S(`
 `)
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 }
 
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 func WriteSubhyphaeHTML(qq422016 qtio422016.Writer, subhyphae string) {
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 	StreamSubhyphaeHTML(qw422016, subhyphae)
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 	qt422016.ReleaseWriter(qw422016)
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 }
 
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 func SubhyphaeHTML(subhyphae string) string {
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 	WriteSubhyphaeHTML(qb422016, subhyphae)
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 	qs422016 := string(qb422016.B)
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 	return qs422016
-//line views/nav.qtpl:47
+//line views/nav.qtpl:48
 }

views/stuff.qtpl

@@ -120,6 +120,21 @@ It outputs a poorly formatted JSON, but it works and is valid.
 }
 {% endfunc %}
 
+{% func BacklinksHTML(query string, generator func(string) <-chan string) %}
+<div class="layout">
+<main class="main-width backlinks">
+	<h1>Backlinks to ‘{%s query %}’</h1>
+	<p>Hyphae which have a link to the selected hypha are listed below.</p>
+	<ul class="backlinks__list">
+	{% for hyphaName := range generator(query) %}
+		<li class="backlinks__entry">
+			<a class="backlinks__link wikilink" href="/hypha/{%s hyphaName %}">{%s util.BeautifulName(hyphaName) %}</a>
+		</li>
+	{% endfor %}
+</main>
+</div>
+{% endfunc %}
+
 {% func HelpHTML(content string) %}
 <div class="layout">
 <main class="main-width help">

views/stuff.qtpl.go

@@ -397,95 +397,161 @@ func TitleSearchJSON(query string, generator func(string) <-chan string) string
 }
 
 //line views/stuff.qtpl:123
-func StreamHelpHTML(qw422016 *qt422016.Writer, content string) {
+func StreamBacklinksHTML(qw422016 *qt422016.Writer, query string, generator func(string) <-chan string) {
 //line views/stuff.qtpl:123
 	qw422016.N().S(`
 <div class="layout">
+<main class="main-width backlinks">
+	<h1>Backlinks to ‘`)
+//line views/stuff.qtpl:126
+	qw422016.E().S(query)
+//line views/stuff.qtpl:126
+	qw422016.N().S(`’</h1>
+	<p>Hyphae which have a link to the selected hypha are listed below.</p>
+	<ul class="backlinks__list">
+	`)
+//line views/stuff.qtpl:129
+	for hyphaName := range generator(query) {
+//line views/stuff.qtpl:129
+		qw422016.N().S(`
+		<li class="backlinks__entry">
+			<a class="backlinks__link wikilink" href="/hypha/`)
+//line views/stuff.qtpl:131
+		qw422016.E().S(hyphaName)
+//line views/stuff.qtpl:131
+		qw422016.N().S(`">`)
+//line views/stuff.qtpl:131
+		qw422016.E().S(util.BeautifulName(hyphaName))
+//line views/stuff.qtpl:131
+		qw422016.N().S(`</a>
+		</li>
+	`)
+//line views/stuff.qtpl:133
+	}
+//line views/stuff.qtpl:133
+	qw422016.N().S(`
+</main>
+</div>
+`)
+//line views/stuff.qtpl:136
+}
+
+//line views/stuff.qtpl:136
+func WriteBacklinksHTML(qq422016 qtio422016.Writer, query string, generator func(string) <-chan string) {
+//line views/stuff.qtpl:136
+	qw422016 := qt422016.AcquireWriter(qq422016)
+//line views/stuff.qtpl:136
+	StreamBacklinksHTML(qw422016, query, generator)
+//line views/stuff.qtpl:136
+	qt422016.ReleaseWriter(qw422016)
+//line views/stuff.qtpl:136
+}
+
+//line views/stuff.qtpl:136
+func BacklinksHTML(query string, generator func(string) <-chan string) string {
+//line views/stuff.qtpl:136
+	qb422016 := qt422016.AcquireByteBuffer()
+//line views/stuff.qtpl:136
+	WriteBacklinksHTML(qb422016, query, generator)
+//line views/stuff.qtpl:136
+	qs422016 := string(qb422016.B)
+//line views/stuff.qtpl:136
+	qt422016.ReleaseByteBuffer(qb422016)
+//line views/stuff.qtpl:136
+	return qs422016
+//line views/stuff.qtpl:136
+}
+
+//line views/stuff.qtpl:138
+func StreamHelpHTML(qw422016 *qt422016.Writer, content string) {
+//line views/stuff.qtpl:138
+	qw422016.N().S(`
+<div class="layout">
 <main class="main-width help">
 	<article>
 	`)
-//line views/stuff.qtpl:127
+//line views/stuff.qtpl:142
 	qw422016.N().S(content)
-//line views/stuff.qtpl:127
+//line views/stuff.qtpl:142
 	qw422016.N().S(`
 	</article>
 </main>
 `)
-//line views/stuff.qtpl:130
+//line views/stuff.qtpl:145
 	qw422016.N().S(helpTopicsHTML())
-//line views/stuff.qtpl:130
+//line views/stuff.qtpl:145
 	qw422016.N().S(`
 </div>
 `)
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 }
 
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 func WriteHelpHTML(qq422016 qtio422016.Writer, content string) {
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 	StreamHelpHTML(qw422016, content)
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 	qt422016.ReleaseWriter(qw422016)
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 }
 
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 func HelpHTML(content string) string {
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 	WriteHelpHTML(qb422016, content)
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 	qs422016 := string(qb422016.B)
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 	return qs422016
-//line views/stuff.qtpl:132
+//line views/stuff.qtpl:147
 }
 
-//line views/stuff.qtpl:134
+//line views/stuff.qtpl:149
 func StreamHelpEmptyErrorHTML(qw422016 *qt422016.Writer) {
-//line views/stuff.qtpl:134
+//line views/stuff.qtpl:149
 	qw422016.N().S(`
 <h1>This entry does not exist!</h1>
 <p>Try finding a different entry that would help you.</p>
 <p>If you want to write this entry by yourself, consider <a class="wikilink wikilink_external wikilink_https" href="https://github.com/bouncepaw/mycorrhiza">contributing</a> to Mycorrhiza Wiki directly.</p>
 `)
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 }
 
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 func WriteHelpEmptyErrorHTML(qq422016 qtio422016.Writer) {
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 	StreamHelpEmptyErrorHTML(qw422016)
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 	qt422016.ReleaseWriter(qw422016)
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 }
 
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 func HelpEmptyErrorHTML() string {
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 	WriteHelpEmptyErrorHTML(qb422016)
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 	qs422016 := string(qb422016.B)
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 	return qs422016
-//line views/stuff.qtpl:138
+//line views/stuff.qtpl:153
 }
 
-//line views/stuff.qtpl:140
+//line views/stuff.qtpl:155
 func streamhelpTopicsHTML(qw422016 *qt422016.Writer) {
-//line views/stuff.qtpl:140
+//line views/stuff.qtpl:155
 	qw422016.N().S(`
 <aside class="help-topics layout-card">
 	<h2 class="layout-card__title">Help topics</h2>
@@ -520,87 +586,87 @@ func streamhelpTopicsHTML(qw422016 *qt422016.Writer) {
 	</ul>
 </aside>
 `)
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 }
 
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 func writehelpTopicsHTML(qq422016 qtio422016.Writer) {
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 	streamhelpTopicsHTML(qw422016)
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 	qt422016.ReleaseWriter(qw422016)
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 }
 
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 func helpTopicsHTML() string {
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 	writehelpTopicsHTML(qb422016)
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 	qs422016 := string(qb422016.B)
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 	return qs422016
-//line views/stuff.qtpl:173
+//line views/stuff.qtpl:188
 }
 
-//line views/stuff.qtpl:175
+//line views/stuff.qtpl:190
 func streamhelpTopicBadgeHTML(qw422016 *qt422016.Writer, lang, topic string) {
-//line views/stuff.qtpl:175
+//line views/stuff.qtpl:190
 	qw422016.N().S(`
 <a class="help-topic-badge" href="/help/`)
-//line views/stuff.qtpl:176
+//line views/stuff.qtpl:191
 	qw422016.E().S(lang)
-//line views/stuff.qtpl:176
+//line views/stuff.qtpl:191
 	qw422016.N().S(`/`)
-//line views/stuff.qtpl:176
+//line views/stuff.qtpl:191
 	qw422016.E().S(topic)
-//line views/stuff.qtpl:176
+//line views/stuff.qtpl:191
 	qw422016.N().S(`">?</a>
 `)
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 }
 
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 func writehelpTopicBadgeHTML(qq422016 qtio422016.Writer, lang, topic string) {
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 	streamhelpTopicBadgeHTML(qw422016, lang, topic)
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 	qt422016.ReleaseWriter(qw422016)
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 }
 
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 func helpTopicBadgeHTML(lang, topic string) string {
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 	writehelpTopicBadgeHTML(qb422016, lang, topic)
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 	qs422016 := string(qb422016.B)
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 	return qs422016
-//line views/stuff.qtpl:177
+//line views/stuff.qtpl:192
 }
 
-//line views/stuff.qtpl:179
+//line views/stuff.qtpl:194
 func StreamUserListHTML(qw422016 *qt422016.Writer) {
-//line views/stuff.qtpl:179
+//line views/stuff.qtpl:194
 	qw422016.N().S(`
 <div class="layout">
 <main class="main-width user-list">
 	<h1>List of users</h1>
 `)
-//line views/stuff.qtpl:184
+//line views/stuff.qtpl:199
 	var (
 		admins     = make([]string, 0)
 		moderators = make([]string, 0)
@@ -617,345 +683,345 @@ func StreamUserListHTML(qw422016 *qt422016.Writer) {
 		}
 	}
 
-//line views/stuff.qtpl:199
+//line views/stuff.qtpl:214
 	qw422016.N().S(`
 	<section>
 		<h2>Admins</h2>
 		<ol>`)
-//line views/stuff.qtpl:202
+//line views/stuff.qtpl:217
 	for _, name := range admins {
-//line views/stuff.qtpl:202
+//line views/stuff.qtpl:217
 		qw422016.N().S(`
 			<li><a href="/hypha/`)
-//line views/stuff.qtpl:203
+//line views/stuff.qtpl:218
 		qw422016.E().S(cfg.UserHypha)
-//line views/stuff.qtpl:203
+//line views/stuff.qtpl:218
 		qw422016.N().S(`/`)
-//line views/stuff.qtpl:203
+//line views/stuff.qtpl:218
 		qw422016.E().S(name)
-//line views/stuff.qtpl:203
+//line views/stuff.qtpl:218
 		qw422016.N().S(`">`)
-//line views/stuff.qtpl:203
+//line views/stuff.qtpl:218
 		qw422016.E().S(name)
-//line views/stuff.qtpl:203
+//line views/stuff.qtpl:218
 		qw422016.N().S(`</a></li>
 		`)
-//line views/stuff.qtpl:204
+//line views/stuff.qtpl:219
 	}
-//line views/stuff.qtpl:204
+//line views/stuff.qtpl:219
 	qw422016.N().S(`</ol>
 	</section>
 	<section>
 		<h2>Moderators</h2>
 		<ol>`)
-//line views/stuff.qtpl:208
+//line views/stuff.qtpl:223
 	for _, name := range moderators {
-//line views/stuff.qtpl:208
+//line views/stuff.qtpl:223
 		qw422016.N().S(`
 			<li><a href="/hypha/`)
-//line views/stuff.qtpl:209
+//line views/stuff.qtpl:224
 		qw422016.E().S(cfg.UserHypha)
-//line views/stuff.qtpl:209
+//line views/stuff.qtpl:224
 		qw422016.N().S(`/`)
-//line views/stuff.qtpl:209
+//line views/stuff.qtpl:224
 		qw422016.E().S(name)
-//line views/stuff.qtpl:209
+//line views/stuff.qtpl:224
 		qw422016.N().S(`">`)
-//line views/stuff.qtpl:209
+//line views/stuff.qtpl:224
 		qw422016.E().S(name)
-//line views/stuff.qtpl:209
+//line views/stuff.qtpl:224
 		qw422016.N().S(`</a></li>
 		`)
-//line views/stuff.qtpl:210
+//line views/stuff.qtpl:225
 	}
-//line views/stuff.qtpl:210
+//line views/stuff.qtpl:225
 	qw422016.N().S(`</ol>
 	</section>
 	<section>
 		<h2>Editors</h2>
 		<ol>`)
-//line views/stuff.qtpl:214
+//line views/stuff.qtpl:229
 	for _, name := range editors {
-//line views/stuff.qtpl:214
+//line views/stuff.qtpl:229
 		qw422016.N().S(`
 			<li><a href="/hypha/`)
-//line views/stuff.qtpl:215
+//line views/stuff.qtpl:230
 		qw422016.E().S(cfg.UserHypha)
-//line views/stuff.qtpl:215
+//line views/stuff.qtpl:230
 		qw422016.N().S(`/`)
-//line views/stuff.qtpl:215
+//line views/stuff.qtpl:230
 		qw422016.E().S(name)
-//line views/stuff.qtpl:215
+//line views/stuff.qtpl:230
 		qw422016.N().S(`">`)
-//line views/stuff.qtpl:215
+//line views/stuff.qtpl:230
 		qw422016.E().S(name)
-//line views/stuff.qtpl:215
+//line views/stuff.qtpl:230
 		qw422016.N().S(`</a></li>
 		`)
-//line views/stuff.qtpl:216
+//line views/stuff.qtpl:231
 	}
-//line views/stuff.qtpl:216
+//line views/stuff.qtpl:231
 	qw422016.N().S(`</ol>
 	</section>
 </main>
 </div>
 `)
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 }
 
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 func WriteUserListHTML(qq422016 qtio422016.Writer) {
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 	StreamUserListHTML(qw422016)
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 	qt422016.ReleaseWriter(qw422016)
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 }
 
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 func UserListHTML() string {
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 	WriteUserListHTML(qb422016)
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 	qs422016 := string(qb422016.B)
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 	return qs422016
-//line views/stuff.qtpl:220
+//line views/stuff.qtpl:235
 }
 
-//line views/stuff.qtpl:222
+//line views/stuff.qtpl:237
 func StreamHyphaListHTML(qw422016 *qt422016.Writer) {
-//line views/stuff.qtpl:222
+//line views/stuff.qtpl:237
 	qw422016.N().S(`
 <div class="layout">
 <main class="main-width">
 	<h1>List of hyphae</h1>
 	<p>This wiki has `)
-//line views/stuff.qtpl:226
+//line views/stuff.qtpl:241
 	qw422016.N().D(hyphae.Count())
-//line views/stuff.qtpl:226
+//line views/stuff.qtpl:241
 	qw422016.N().S(` hyphae.</p>
 	<ul class="hypha-list">
 		`)
-//line views/stuff.qtpl:228
+//line views/stuff.qtpl:243
 	for h := range hyphae.YieldExistingHyphae() {
-//line views/stuff.qtpl:228
+//line views/stuff.qtpl:243
 		qw422016.N().S(`
 		<li class="hypha-list__entry">
 			<a class="hypha-list__link" href="/hypha/`)
-//line views/stuff.qtpl:230
+//line views/stuff.qtpl:245
 		qw422016.E().S(h.Name)
-//line views/stuff.qtpl:230
+//line views/stuff.qtpl:245
 		qw422016.N().S(`">`)
-//line views/stuff.qtpl:230
+//line views/stuff.qtpl:245
 		qw422016.E().S(util.BeautifulName(h.Name))
-//line views/stuff.qtpl:230
+//line views/stuff.qtpl:245
 		qw422016.N().S(`</a>
 			`)
-//line views/stuff.qtpl:231
+//line views/stuff.qtpl:246
 		if h.BinaryPath != "" {
-//line views/stuff.qtpl:231
+//line views/stuff.qtpl:246
 			qw422016.N().S(`
 			<span class="hypha-list__amnt-type">`)
-//line views/stuff.qtpl:232
+//line views/stuff.qtpl:247
 			qw422016.E().S(filepath.Ext(h.BinaryPath)[1:])
-//line views/stuff.qtpl:232
+//line views/stuff.qtpl:247
 			qw422016.N().S(`</span>
 			`)
-//line views/stuff.qtpl:233
+//line views/stuff.qtpl:248
 		}
-//line views/stuff.qtpl:233
+//line views/stuff.qtpl:248
 		qw422016.N().S(`
 		</li>
 		`)
-//line views/stuff.qtpl:235
+//line views/stuff.qtpl:250
 	}
-//line views/stuff.qtpl:235
+//line views/stuff.qtpl:250
 	qw422016.N().S(`
 	</ul>
 </main>
 </div>
 `)
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 }
 
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 func WriteHyphaListHTML(qq422016 qtio422016.Writer) {
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 	StreamHyphaListHTML(qw422016)
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 	qt422016.ReleaseWriter(qw422016)
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 }
 
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 func HyphaListHTML() string {
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 	WriteHyphaListHTML(qb422016)
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 	qs422016 := string(qb422016.B)
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 	return qs422016
-//line views/stuff.qtpl:239
+//line views/stuff.qtpl:254
 }
 
-//line views/stuff.qtpl:241
+//line views/stuff.qtpl:256
 func StreamAboutHTML(qw422016 *qt422016.Writer) {
-//line views/stuff.qtpl:241
+//line views/stuff.qtpl:256
 	qw422016.N().S(`
 <div class="layout">
 <main class="main-width">
 	<section>
 		<h1>About `)
-//line views/stuff.qtpl:245
+//line views/stuff.qtpl:260
 	qw422016.E().S(cfg.WikiName)
-//line views/stuff.qtpl:245
+//line views/stuff.qtpl:260
 	qw422016.N().S(`</h1>
 		<ul>
 			<li><b><a href="https://mycorrhiza.wiki">Mycorrhiza Wiki</a> version:</b> 1.5.0</li>
 `)
-//line views/stuff.qtpl:248
+//line views/stuff.qtpl:263
 	if cfg.UseAuth {
-//line views/stuff.qtpl:248
+//line views/stuff.qtpl:263
 		qw422016.N().S(`			<li><b>User count:</b> `)
-//line views/stuff.qtpl:249
+//line views/stuff.qtpl:264
 		qw422016.N().DUL(user.Count())
-//line views/stuff.qtpl:249
+//line views/stuff.qtpl:264
 		qw422016.N().S(`</li>
 			<li><b>Home page:</b> <a href="/">`)
-//line views/stuff.qtpl:250
+//line views/stuff.qtpl:265
 		qw422016.E().S(cfg.HomeHypha)
-//line views/stuff.qtpl:250
+//line views/stuff.qtpl:265
 		qw422016.N().S(`</a></li>
 			<li><b>Administrators:</b>`)
-//line views/stuff.qtpl:251
+//line views/stuff.qtpl:266
 		for i, username := range user.ListUsersWithGroup("admin") {
-//line views/stuff.qtpl:252
+//line views/stuff.qtpl:267
 			if i > 0 {
-//line views/stuff.qtpl:252
+//line views/stuff.qtpl:267
 				qw422016.N().S(`<span aria-hidden="true">, </span>
 `)
-//line views/stuff.qtpl:253
+//line views/stuff.qtpl:268
 			}
-//line views/stuff.qtpl:253
+//line views/stuff.qtpl:268
 			qw422016.N().S(`				<a href="/hypha/`)
-//line views/stuff.qtpl:254
+//line views/stuff.qtpl:269
 			qw422016.E().S(cfg.UserHypha)
-//line views/stuff.qtpl:254
+//line views/stuff.qtpl:269
 			qw422016.N().S(`/`)
-//line views/stuff.qtpl:254
+//line views/stuff.qtpl:269
 			qw422016.E().S(username)
-//line views/stuff.qtpl:254
+//line views/stuff.qtpl:269
 			qw422016.N().S(`">`)
-//line views/stuff.qtpl:254
+//line views/stuff.qtpl:269
 			qw422016.E().S(username)
-//line views/stuff.qtpl:254
+//line views/stuff.qtpl:269
 			qw422016.N().S(`</a>`)
-//line views/stuff.qtpl:254
+//line views/stuff.qtpl:269
 		}
-//line views/stuff.qtpl:254
+//line views/stuff.qtpl:269
 		qw422016.N().S(`</li>
 `)
-//line views/stuff.qtpl:255
+//line views/stuff.qtpl:270
 	} else {
-//line views/stuff.qtpl:255
+//line views/stuff.qtpl:270
 		qw422016.N().S(`			<li>This wiki does not use authorization</li>
 `)
-//line views/stuff.qtpl:257
+//line views/stuff.qtpl:272
 	}
-//line views/stuff.qtpl:257
+//line views/stuff.qtpl:272
 	qw422016.N().S(`		</ul>
 		<p>See <a href="/list">/list</a> for information about hyphae on this wiki.</p>
 	</section>
 </main>
 </div>
 `)
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 }
 
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 func WriteAboutHTML(qq422016 qtio422016.Writer) {
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 	StreamAboutHTML(qw422016)
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 	qt422016.ReleaseWriter(qw422016)
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 }
 
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 func AboutHTML() string {
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 	WriteAboutHTML(qb422016)
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 	qs422016 := string(qb422016.B)
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 	return qs422016
-//line views/stuff.qtpl:263
+//line views/stuff.qtpl:278
 }
 
-//line views/stuff.qtpl:265
+//line views/stuff.qtpl:280
 func StreamCommonScripts(qw422016 *qt422016.Writer) {
-//line views/stuff.qtpl:265
+//line views/stuff.qtpl:280
 	qw422016.N().S(`
 `)
-//line views/stuff.qtpl:266
+//line views/stuff.qtpl:281
 	for _, scriptPath := range cfg.CommonScripts {
-//line views/stuff.qtpl:266
+//line views/stuff.qtpl:281
 		qw422016.N().S(`
 <script src="`)
-//line views/stuff.qtpl:267
+//line views/stuff.qtpl:282
 		qw422016.E().S(scriptPath)
-//line views/stuff.qtpl:267
+//line views/stuff.qtpl:282
 		qw422016.N().S(`"></script>
 `)
-//line views/stuff.qtpl:268
+//line views/stuff.qtpl:283
 	}
-//line views/stuff.qtpl:268
+//line views/stuff.qtpl:283
 	qw422016.N().S(`
 `)
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 }
 
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 func WriteCommonScripts(qq422016 qtio422016.Writer) {
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 	StreamCommonScripts(qw422016)
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 	qt422016.ReleaseWriter(qw422016)
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 }
 
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 func CommonScripts() string {
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 	WriteCommonScripts(qb422016)
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 	qs422016 := string(qb422016.B)
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 	return qs422016
-//line views/stuff.qtpl:269
+//line views/stuff.qtpl:284
 }

web/backlinks.go

@@ -0,0 +1,37 @@
+package web
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/gorilla/mux"
+
+	"github.com/bouncepaw/mycorrhiza/hyphae"
+	"github.com/bouncepaw/mycorrhiza/user"
+	"github.com/bouncepaw/mycorrhiza/util"
+	"github.com/bouncepaw/mycorrhiza/views"
+)
+
+func initBacklinks(r *mux.Router) {
+	r.PathPrefix("/backlinks/").HandlerFunc(handlerBacklinks)
+	r.PathPrefix("/backlinks-json/").HandlerFunc(handlerBacklinksJSON)
+}
+
+// handlerBacklinks lists all backlinks to a hypha.
+func handlerBacklinks(w http.ResponseWriter, rq *http.Request) {
+	hyphaName := util.HyphaNameFromRq(rq, "backlinks")
+	util.HTTP200Page(w, views.BaseHTML(
+		fmt.Sprintf("Backlinks to %s", util.BeautifulName(hyphaName)),
+		views.BacklinksHTML(hyphaName, hyphae.YieldHyphaBacklinks),
+		user.FromRequest(rq)))
+}
+
+func handlerBacklinksJSON(w http.ResponseWriter, rq *http.Request) {
+	hyphaName := util.HyphaNameFromRq(rq, "backlinks")
+	w.WriteHeader(http.StatusOK)
+	_, _ = io.WriteString(
+		w,
+		views.TitleSearchJSON(hyphaName, hyphae.YieldHyphaBacklinks),
+	)
+}

web/web.go

@@ -103,6 +103,7 @@ func Handler() http.Handler {
 	initHistory(wikiRouter)
 	initStuff(wikiRouter)
 	initSearch(wikiRouter)
+	initBacklinks(wikiRouter)
 
 	// Admin routes.
 	if cfg.UseAuth {