Support rendering of proposal tables

layouts/shortcodes/proposal-tables.html

@@ -0,0 +1,81 @@
+{{/*
+
+  This template is used to render tables of MSC proposals.
+
+  It expects there to be a "proposals.json" under /data/msc.
+  It expects "proposals.json" to contain an array of objects,
+  one for each MSC state. Each object contains:
+  * `title`: human-readable title for the state, like "Proposal In Review"
+  * `label`: the GitHub label used for the state, like "proposal-in-review"
+  * `proposals`: an array of objects, each of which represents an MSC and contains:
+      * `number`: GitHub issue number
+			* `url`: GitHub URL for this issue
+			* `title`: Issue title
+		  * `created_at`: issue creation date
+			* `updated_at`: issue last-updated date
+			* `authors`: array of GitHub user names representing authors of this MSC
+			* `shepherd`: GitHub user name representing the shepherd of this MSC, or null
+			* `documentation`: Links to further documentation referenced in the GitHub issue
+
+  This data is scraped from GitHub using the /scripts/proposals.js Node script.
+  The script is run in CI: so typically if you run a local server the data will
+  be missing and no tables will be generated. If you do want to see the tables locally,
+  you can run the script locally:
+
+    npm install
+    npm run get-proposals
+
+  If this template does find the data, it renders one table for each MSC state,
+  containing a row for each MSC in that state.
+
+*/}}
+
+{{ $states := .Site.Data.msc.proposals }}
+
+{{ range $states }}
+<h3 id="{{.label}}" class="proposal-table-title">{{ .title }}</h3>
+    {{ if .proposals }}
+<table class="msc-table table">
+  <thead>
+    <tr>
+      <th>MSC</th>
+      <th>Title</th>
+      <th>Created at</th>
+      <th>Updated at</th>
+      <th>Docs</th>
+      <th>Author</th>
+      <th>Shepherd</th>
+    </tr>
+  </thead>
+
+  <tbody>
+        {{ range .proposals }}
+
+            {{ $index := 0 }}
+            {{ $docs_links_list := slice }}
+            {{ range .documentation }}
+                {{ $index = add $index 1 }}
+                {{ $docs_link := printf "<a href=\"%s\">%d</a>" . $index }}
+                {{ $docs_links_list = $docs_links_list | append $docs_link }}
+            {{ end }}
+            {{ $docs_links := delimit $docs_links_list ", " }}
+
+            {{ $authors_list := apply .authors "printf" "<a href=\"https://github.com/%s\">@%s</a>" "." "." }}
+            {{ $authors := delimit $authors_list ", " }}
+
+  <tr>
+      <td><a href="{{ .url }}">{{ .number }}</a></td>
+      <td>{{ .title }}</td>
+      <td>{{ .created_at }}</td>
+      <td>{{ .updated_at }}</td>
+      <td>{{ with $docs_links }}{{ $docs_links }}{{ end }}</td>
+      <td>{{ $authors }}</td>
+      <td>{{ with .shepherd }}<a href="https://github.com/{{ . }}">@{{ . }}</a>{{ end }}</td>
+  </tr>
+        {{ end }}
+  </tbody>
+</table>
+    {{ else }}
+<p>No MSCs are currently in this state.</p>
+    {{ end }}
+{{ end }}