previm · mattn · Nov 7, 2019 · Oct 5, 2018 · Nov 14, 2018 · Nov 14, 2018
diff --git a/.gitignore b/.gitignore
@@ -1,3 +1,45 @@
 preview/**
 !preview/_
 doc/tags*
+
+# Created by https://www.gitignore.io/api/vim,osx
+
+### Vim ###
+# swap
+[._]*.s[a-w][a-z]
+[._]s[a-w][a-z]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+
+### OSX ###
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
diff --git a/preview/_/index.html b/preview/_/index.html
@@ -34,6 +34,8 @@
             <script src="../_/js/lib/textile.js"></script>
             <script src="../_/js/lib/mermaid.min.js"></script>
             <script src="../_/js/lib/asciidoctor.min.js"></script>
+            <script src="../_/js/lib/zip_deflate.js"></script>
+            <script src="../_/js/lib/plantuml.js"></script>
             <script src="../_/js/previm.js"></script>
             <div id="monitor"></div>
         </div>

diff --git a/preview/_/js/lib/plantuml.js b/preview/_/js/lib/plantuml.js
@@ -0,0 +1,64 @@
+function encode64(a) {
+  r = "";
+  for (i = 0; i < a.length; i += 3) {
+    if (i + 2 == a.length) {
+      r += append3bytes(a.charCodeAt(i), a.charCodeAt(i + 1), 0)
+    } else {
+      if (i + 1 == a.length) {
+        r += append3bytes(a.charCodeAt(i), 0, 0)
+      } else {
+        r += append3bytes(a.charCodeAt(i), a.charCodeAt(i + 1), a.charCodeAt(i + 2))
+      }
+    }
+  }
+  return r
+}
+
+function append3bytes(c, b, a) {
+  c1 = c >> 2;
+  c2 = ((c & 3) << 4) | (b >> 4);
+  c3 = ((b & 15) << 2) | (a >> 6);
+  c4 = a & 63;
+  r = "";
+  r += encode6bit(c1 & 63);
+  r += encode6bit(c2 & 63);
+  r += encode6bit(c3 & 63);
+  r += encode6bit(c4 & 63);
+  return r
+}
+
+function encode6bit(a) {
+  if (a < 10) {
+    return String.fromCharCode(48 + a)
+  }
+  a -= 10;
+  if (a < 26) {
+    return String.fromCharCode(65 + a)
+  }
+  a -= 26;
+  if (a < 26) {
+    return String.fromCharCode(97 + a)
+  }
+  a -= 26;
+  if (a == 0) {
+    return "-"
+  }
+  if (a == 1) {
+    return "_"
+  }
+  return "?"
+}
+
+function compress(a) {
+  a = unescape(encodeURIComponent(a));
+  return "http://plantuml.com/plantuml/img/" + encode64(zip_deflate(a, 9));
+}
+
+function loadPlantUML() {
+  var umls = document.querySelectorAll('code.language-plantuml');
+  Array.prototype.slice.call(umls).forEach(function(el) {
+    var text = el.textContent
+    var url = compress(text);
+    el.parentNode.outerHTML = '<div><img src="' + url + '" /></div>'
+  });
+}