Implement variable substitution for site files.

It was such a pain to update the links in site/index.html for v0.1.0, so
this is necessary to prevent me from going insane manually updating all
these version numbers sprinkled everywhere.

README.txt

@@ -53,10 +53,9 @@ To cut a new release for Telodendria, perform the following
 steps. This is just a reference for me so I don't mess it up.
 
 	- Update tools/bin/td to declare the next version number.
-	- Update site/index.html with links to the new version.
+	- Make sure man/man7/telodendria-changelog.7 is up to date.
-	- Make sure man/man7/telodendria-changelog.7 is up to date
 	  with the latest information.
-	- Commit any changes made in the previous steps.
+	- Commit all changes.
 	- Run the release recipe: td release
 	- Deploy the site: td site
 

man/man7/telodendria-changelog.7

@@ -1,4 +1,4 @@
-.Dd $Mdocdate: December 13 2022 $
+.Dd $Mdocdate: December 14 2022 $
 .Dt TELODENDRIA-CHANGELOG 7
 .Os Telodendria Project
 .Sh NAME
@@ -40,6 +40,11 @@ Fixed a bug in
 that caused
 .Xr cvs 1
 to be invoked in the wrong directory when tagging a new release.
+.It
+Added support for environment variable substitution in all site
+files. This makes it easier to release
+.Nm
+versions.
 .El
 .Sh v0.1.0
 .Pp

site/index.html

@@ -68,20 +68,20 @@ telodendria-signify.pub</a>.
 <th>Signature</th>
 </tr>
 <tr>
-<td>v0.1.1</td>
+<td>${TELODENDRIA_VERSION}</td>
 <td>
-<a href="/pub/v0.1.1/Telodendria-v0.1.1.tar.gz">
+<a href="/pub/v${TELODENDRIA_VERSION}/Telodendria-v${TELODENDRIA_VERSION}.tar.gz">
-Telodendria-v0.1.1.tar.gz
+<code>Telodendria-v${TELODENDRIA_VERSION}.tar.gz</code>
 </a>
 </td>
 <td>
-<a href="/pub/v0.1.1/Telodendria-v0.1.1.tar.gz.sha256">
+<a href="/pub/v${TELODENDRIA_VERSION}/Telodendria-v${TELODENDRIA_VERSION}.tar.gz.sha256">
-SHA256
+<code>Telodendria-v${TELODENDRIA_VERSION}.tar.gz.sha256</code>
 </a>
 </td>
 <td>
-<a href="/pub/v0.1.1/Telodendria-v0.1.1.tar.gz.sig">
+<a href="/pub/v${TELODENDRIA_VERSION}/Telodendria-v${TELODENDRIA_VERSION}.tar.gz.sig">
-Signify
+<code>Telodendria-v${TELODENDRIA_VERSION}.tar.gz.sig</code>
 </a>
 </td>
 </tr>
@@ -278,6 +278,8 @@ Extremely simple HTTP server.
 <hr>
 <p>
 &copy; 2022 Jordan Bancino &lt;@jordan:bancino.net&gt;
+<br>
+Updated on ${DATE}.
 </p>
 </body>
 </html>

site/style.css

@@ -43,14 +43,6 @@ body {
 	text-decoration: underline
 }
 
-.Bd {
-    background-color: var(--color-snippet);
-    border-radius: var(--border-radius);
-	padding-left: 10px;
-
-	overflow: auto;
-}
-
 h1 {
 	text-align: center;
 }
@@ -83,7 +75,6 @@ table {
 	border-spacing: 0px;
 }
 
-
 td, th {
     border: 1px solid var(--color-table-border);
     text-align: left;
@@ -94,8 +85,23 @@ tr:nth-child(even) {
     background-color: var(--color-table-accent);
 }
 
-/* The above styles are nice for real tables, but not for
+/* Thanks Jonah! */
- * a man page synopsis. */
+#logo {
+	display: block;
+	margin: auto;
+	width: 50vw;
+	max-width: 400px;
+}
+
+/* Mandoc overrides */
+
+.Bd {
+    background-color: var(--color-snippet);
+    border-radius: var(--border-radius);
+	padding-left: 10px;
+
+	overflow: auto;
+}
 
 .Nm {
 	width: fit-content;
@@ -105,11 +111,4 @@ tr:nth-child(even) {
 	border: none;
 }
 
-/* Thanks Jonah! */
-#logo {
-	display: block;
-	margin: auto;
-	width: 50vw;
-	max-width: 400px;
-}
 

tools/bin/td

@@ -63,6 +63,24 @@ mod_time() {
     fi 
 }
 
+# Substitute shell variables in a stream with their actual value
+# in this shell.
+setsubst() {
+    SED="/tmp/sed-$RANDOM.txt"
+
+    (
+        set | while IFS='=' read -r var val; do
+            val=$(echo "$val" | cut -d "'" -f 2)
+            echo "s|\\\${$var}|$val|g"
+        done
+
+        echo "s|\\\${[a-zA-Z_]*}||g"
+    ) > "$SED"
+
+    sed -f "$SED" $@
+    rm "$SED"
+}
+
 # Build the source code, and generate  the 'build/telodendria'
 # binary.
 recipe_build() {
@@ -133,15 +151,29 @@ recipe_site() {
 		exit 1
 	fi
 
-	cp -v site/* "$TELODENDRIA_PUB/"
+    DATE=$(date)
+
+    cd site/
+    find . -type f | while IFS= read -r file; do
+        dest="$TELODENDRIA_PUB/$file"
+        dir=$(dirname "$dest")
+
+        echo "$dest"
+
+        mkdir -p "$dir"
+        setsubst "$file" > "$dest"
+    done
+    cd - > /dev/null
 
 	find man/ -name '*.[1-9]' | while IFS= read -r man; do
 		dir=$(dirname "$man")
 		html=$(basename "$man")
 
 		mkdir -p "$TELODENDRIA_PUB/$dir/"
-		mandoc -Thtml -O style=/style.css,man=/man/man%S/%N.%S.html "$man" > "$TELODENDRIA_PUB/$dir/$html.html"
+		mandoc -Thtml \
-		echo "$man -> $TELODENDRIA_PUB/$dir/$html.html"
+            -O style=/style.css,man=man/man%S/%N.%S.html "$man" \
+            > "$TELODENDRIA_PUB/$dir/$html.html"
+		echo "$TELODENDRIA_PUB/$dir/$html.html"
 	done
 }