From 0b5c6797ee8e2ce6cc103dce81c064e481bb7a0a Mon Sep 17 00:00:00 2001
From: PCloud <52968553+HEIGE-PCloud@users.noreply.github.com>
Date: Sat, 2 Oct 2021 12:08:18 +0100
Subject: [PATCH] feat: enhance searching experience (#260)

* feat: enhance index.js

- add anchor information to uri
- add support from h4 to h6

* chore(fusejs): adjust fusejs search settings

* feat: add support for h1 tag

* chore: tweak the search settings
---
 exampleSite/config.toml | 10 +++----
 layouts/index.json      | 59 ++++++++++++++++++++++++++++++-----------
 2 files changed, 48 insertions(+), 21 deletions(-)

diff --git a/exampleSite/config.toml b/exampleSite/config.toml
index b6d0c6ed6..834db4549 100644
--- a/exampleSite/config.toml
+++ b/exampleSite/config.toml
@@ -136,7 +136,7 @@ enableEmoji = true
         # max number of results length
         maxResultLength = 10
         # snippet length of the result
-        snippetLength = 30
+        snippetLength = 300
         # HTML tag name of the highlight part in results
         highlightTag = "em"
         # whether to use the absolute URL based on the baseURL in search index
@@ -151,9 +151,9 @@ enableEmoji = true
           minMatchCharLength = 2
           findAllMatches = false
           location = 0
-          threshold = 0.3
+          threshold = 0.1
           distance = 100
-          ignoreLocation = false
+          ignoreLocation = true
           useExtendedSearch = false
           ignoreFieldNorm = false
       # Home page config
@@ -381,9 +381,9 @@ enableEmoji = true
           minMatchCharLength = 2
           findAllMatches = false
           location = 0
-          threshold = 0.3
+          threshold = 0.1
           distance = 100
-          ignoreLocation = false
+          ignoreLocation = true
           useExtendedSearch = false
           ignoreFieldNorm = false
       # 主页信息设置
diff --git a/layouts/index.json b/layouts/index.json
index cc62c33e0..5ed471d77 100644
--- a/layouts/index.json
+++ b/layouts/index.json
@@ -11,32 +11,59 @@
         {{- if $.Site.Params.search.absoluteURL -}}
             {{- $uri = .Permalink -}}
         {{- end -}}
-        {{- $meta := dict "uri" $uri "title" .Title "tags" .Params.tags "categories" .Params.categories "series" .Params.series -}}
+        {{- $meta := dict  "title" .Title "tags" .Params.tags "categories" .Params.categories "series" .Params.series -}}
         {{- $meta = $.Site.Params.dateFormat | default "2006-01-02" | .PublishDate.Format | dict "date" | merge $meta -}}
         {{- with .Description -}}
-            {{- $index = $index | append (dict "content" . "objectID" $uri | merge $meta) -}}
+            {{- $index = $index | append (dict "content" . "objectID" $uri "uri" $uri| merge $meta) -}}
         {{- end -}}
         {{- $params := .Params | merge $.Site.Params.page -}}
         {{/* Extended Markdown syntax */}}
         {{- $content := dict "Content" .Content "Ruby" $params.ruby "Fraction" $params.fraction "Fontawesome" $params.fontawesome | partial "function/content.html" -}}
         {{/* Remove line number for code */}}
         {{- $content = $content | replaceRE `<span class="lnt?"> *\d*\n?</span>` "" -}}
-        {{- range $i, $contenti := split $content "<h2 id=" -}}
-            {{- if gt $i 0 -}}
-                {{- $contenti = printf "<h2 id=%v" $contenti -}}
+        {{- $anchor := "" -}}
+        {{- range $h, $contenth := split $content "<h1 id=" -}}
+            {{- if gt $h 0 -}}
+                {{- $anchor = replace (index (split $contenth ">") 0) `"` "" -}}
+                {{- $contenth = printf "<h1 id=%v" $contenth -}}
             {{- end -}}
-            {{- range $j, $contentj := split $contenti "<h3 id=" -}}
-                {{- if gt $j 0 -}}
-                    {{- $contentj = printf "<h3 id=%v" $contentj -}}
+            {{- range $i, $contenti := split $contenth "<h2 id=" -}}
+                {{- if gt $i 0 -}}
+                    {{- $anchor = replace (index (split $contenti ">") 0) `"` "" -}}
+                    {{- $contenti = printf "<h2 id=%v" $contenti -}}
                 {{- end -}}
-                {{/* Plainify, unescape and remove (\n, \t) */}}
-                {{- $contentj = $contentj | plainify | htmlUnescape | replaceRE `[\n\t ]+` " " -}}
-                {{- if gt $.Site.Params.search.contentLength 0 -}}
-                    {{- $contentj = substr $contentj 0 $.Site.Params.search.contentLength -}}
-                {{- end -}}
-                {{- if $contentj | and (ne $contentj " ") -}}
-                    {{- $one := printf "%v:%v:%v" $uri $i $j | dict "content" $contentj "objectID" | merge $meta -}}
-                    {{- $index = $index | append $one -}}
+                {{- range $j, $contentj := split $contenti "<h3 id=" -}}
+                    {{- if gt $j 0 -}}
+                        {{- $anchor = replace (index (split $contentj ">") 0) `"` "" -}}
+                        {{- $contentj = printf "<h3 id=%v" $contentj -}}
+                    {{- end -}}
+                    {{- range $k, $contentk := split $contentj "<h4 id=" -}}
+                        {{- if gt $k 0 -}}
+                            {{- $anchor = replace (index (split $contentk ">") 0) `"` "" -}}
+                            {{- $contentk = printf "<h4 id=%v" $contentk -}}
+                        {{- end -}}
+                        {{- range $l, $contentl := split $contentk "<h5 id=" -}}
+                            {{- if gt $l 0 -}}
+                                {{- $anchor = replace (index (split $contentl ">") 0) `"` "" -}}
+                                {{- $contentk = printf "<h5 id=%v" $contentl -}}
+                            {{- end -}}
+                            {{- range $m, $contentm := split $contentl "<h6 id=" -}}
+                                {{- if gt $m 0 -}}
+                                    {{- $anchor = replace (index (split $contentm ">") 0) `"` "" -}}
+                                    {{- $contentm = printf "<h6 id=%v" $contentm -}}
+                                {{- end -}}
+                                {{/* Plainify, unescape and remove (\n, \t) */}}
+                                {{- $contentj = $contentj | plainify | htmlUnescape | replaceRE `[\n\t ]+` " " -}}
+                                {{- if gt $.Site.Params.search.contentLength 0 -}}
+                                    {{- $contentj = substr $contentj 0 $.Site.Params.search.contentLength -}}
+                                {{- end -}}
+                                {{- if $contentj | and (ne $contentj " ") -}}
+                                    {{- $one := printf "%v:%v:%v" $uri $i $j | dict "content" $contentj "uri" (printf "%v#%v" $uri $anchor) "objectID" | merge $meta -}}
+                                    {{- $index = $index | append $one -}}
+                                {{- end -}}
+                            {{- end -}}
+                        {{- end -}}
+                    {{- end -}}
                 {{- end -}}
             {{- end -}}
         {{- end -}}