feat: enable semantic address format to be localised

For example, US sites can use the US address format and Chinese sites can use the Chinese address format.

A default address_format can be set in params.toml, which can be overriden on a per page basis using a parameter of the same name in a page's front matter. Optionally, multilingual sites may wish to add a default format for each site in languages.toml.

BREAKING CHANGES
- list_delimiter removed from params.toml
- address_format added to params.toml
- [address_formats] added to params.toml

Close #1344

exampleSite/config/_default/params.toml

@@ -136,9 +136,8 @@ date_format = "Jan 2, 2006"
 #   Examples: "3:04 pm" or "15:04"
 time_format = "3:04 PM"
 
-# List delimiter (separates parts of an address)
-# Popular separators are ", " (comma), "<br>" (new line), " " (space)
-list_delimiter = ", "
+# Address format (choose from the [address_formats] list below or add you own to the list).
+address_format = "en-us"
 
 ############################
 ## Advanced
@@ -167,6 +166,12 @@ link_authors = true
 #   E.g. To load `/assets/js/custom.js`, set `plugins_js = ["custom"]`.
 plugins_js  = []
 
+# Available address formats.
+[address_formats]
+  en-us = {order = ['street', 'city', 'region', 'postcode'], delimiters = [', ', ', ', ' ', '']}
+  en-gb = {order = ['street', 'city', 'region', 'postcode'], delimiters = [', ', ', ', ', ', '']}
+  zh = {order = ['postcode', 'region', 'city', 'street'], delimiters = [' ', ' ', ' ', '']}
+
 # Configuration of publication pages.
 [publications]
   # Date format (refer to https://sourcethemes.com/academic/docs/customization/#date-format )

layouts/partials/functions/get_address.html

@@ -0,0 +1,21 @@
+{{/* Function to return a formatted address given a semantic address. */}}
+
+{{/* Check for valid site config. */}}
+{{ if not site.Params.address_format }}{{errorf "Address format missing from `params.toml`!"}}{{end}}
+{{ if not site.Params.address_formats }}{{errorf "Address formats missing from `params.toml`!"}}{{end}}
+
+{{ $page := . }}
+{{ $address := .address }}
+{{ $format_name := $page.Params.address_format | default site.Params.address_format | default "en-us" }}
+{{ $format := index site.Params.address_formats $format_name }}
+{{ $address_display := slice }}
+
+{{ range $k, $v := $format.order }}
+  {{ if eq $v "street" | and $address.street }}{{$address_display = $address_display | append $address.street | append (index $format.delimiters $k | default "") }}{{end}}
+  {{ if eq $v "city" | and $address.city }}{{$address_display = $address_display | append $address.city | append (index $format.delimiters $k | default "") }}{{end}}
+  {{ if eq $v "region" | and $address.region }}{{$address_display = $address_display | append $address.region | append (index $format.delimiters $k | default "") }}{{end}}
+  {{ if eq $v "postcode" | and $address.postcode }}{{$address_display = $address_display | append $address.postcode | append (index $format.delimiters $k | default "") }}{{end}}
+  {{ if eq $v "country" | and $address.country }}{{$address_display = $address_display | append $address.country | append (index $format.delimiters $k | default "") }}{{end}}
+{{end}}
+
+{{ return (delimit $address_display "") }}

layouts/partials/widgets/contact.html

@@ -65,16 +65,10 @@
 
       {{ $addr_formatted := "" }}{{/* Scoping for maps. */}}
       {{ if $data.address.street | or $data.address.city | or $data.address.region | or $data.address.postcode | or $data.address.country }}
-        {{ $addr := slice }}
-        {{with $data.address.street}}{{$addr = $addr | append .}}{{end}}
-        {{with $data.address.city}}{{$addr = $addr | append .}}{{end}}
-        {{with $data.address.region}}{{$addr = $addr | append .}}{{end}}
-        {{with $data.address.postcode}}{{$addr = $addr | append .}}{{end}}
-        {{with $data.address.country}}{{$addr = $addr | append .}}{{end}}
-        {{ $addr_formatted = delimit $addr (site.Params.list_delimiter | default ", ") }}
+        {{ $addr_formatted = partial "functions/get_address" (dict "root" . "address" $data.address) }}
         <li>
           <i class="fa-li fas fa-map-marker fa-2x" aria-hidden="true"></i>
-          <span id="person-address">{{ $addr_formatted }}</span>
+          <span id="person-address">{{$addr_formatted}}</span>
         </li>
       {{ end }}
 

layouts/talk/single.html

@@ -38,7 +38,7 @@
             {{ .Params.event | markdownify }}
             {{ if .Params.event_url }}</a>{{ end }}
           </div>
-        </div> 
+        </div>
       </div>
       <div class="col-md-1"></div>
     </div>
@@ -53,15 +53,8 @@
           <div class="col-12 col-md-3 pub-row-heading">{{ i18n "location" }}</div>
           <div class="col-12 col-md-9">{{ .Params.location | markdownify }}</div>
           {{ if .Params.address }}
-            {{ $addr := slice }}
-            {{with .Params.address.street}}{{$addr = $addr | append .}}{{end}}
-            {{with .Params.address.city}}{{$addr = $addr | append .}}{{end}}
-            {{with .Params.address.region}}{{$addr = $addr | append .}}{{end}}
-            {{with .Params.address.postcode}}{{$addr = $addr | append .}}{{end}}
-            {{with .Params.address.country}}{{$addr = $addr | append .}}{{end}}
-            {{ $addr_formatted := delimit $addr (site.Params.list_delimiter | default ", ") }}
             <div class="col-md-3"></div>
-            <div class="col-12 col-md-9">{{$addr_formatted}}</div>
+            <div class="col-12 col-md-9">{{partial "functions/get_address" (dict "root" . "address" .Params.address) }}}}</div>
           {{end}}
         </div>
       </div>