add hw2

node_modules/highlight.js/lib/languages/properties.js

@@ -0,0 +1,85 @@
+/*
+Language: .properties
+Contributors: Valentin Aitken <valentin@nalisbg.com>, Egor Rogov <e.rogov@postgrespro.ru>
+Website: https://en.wikipedia.org/wiki/.properties
+Category: common, config
+*/
+
+function properties(hljs) {
+
+  // whitespaces: space, tab, formfeed
+  var WS0 = '[ \\t\\f]*';
+  var WS1 = '[ \\t\\f]+';
+  // delimiter
+  var EQUAL_DELIM = WS0+'[:=]'+WS0;
+  var WS_DELIM = WS1;
+  var DELIM = '(' + EQUAL_DELIM + '|' + WS_DELIM + ')';
+  var KEY_ALPHANUM = '([^\\\\\\W:= \\t\\f\\n]|\\\\.)+';
+  var KEY_OTHER = '([^\\\\:= \\t\\f\\n]|\\\\.)+';
+
+  var DELIM_AND_VALUE = {
+          // skip DELIM
+          end: DELIM,
+          relevance: 0,
+          starts: {
+            // value: everything until end of line (again, taking into account backslashes)
+            className: 'string',
+            end: /$/,
+            relevance: 0,
+            contains: [
+              { begin: '\\\\\\\\'},
+              { begin: '\\\\\\n' }
+            ]
+          }
+        };
+
+  return {
+    name: '.properties',
+    case_insensitive: true,
+    illegal: /\S/,
+    contains: [
+      hljs.COMMENT('^\\s*[!#]', '$'),
+      // key: everything until whitespace or = or : (taking into account backslashes)
+      // case of a "normal" key
+      {
+        returnBegin: true,
+        variants: [
+          { begin: KEY_ALPHANUM + EQUAL_DELIM, relevance: 1 },
+          { begin: KEY_ALPHANUM + WS_DELIM, relevance: 0 }
+        ],
+        contains: [
+          {
+            className: 'attr',
+            begin: KEY_ALPHANUM,
+            endsParent: true,
+            relevance: 0
+          }
+        ],
+        starts: DELIM_AND_VALUE
+      },
+      // case of key containing non-alphanumeric chars => relevance = 0
+      {
+        begin: KEY_OTHER + DELIM,
+        returnBegin: true,
+        relevance: 0,
+        contains: [
+          {
+            className: 'meta',
+            begin: KEY_OTHER,
+            endsParent: true,
+            relevance: 0
+          }
+        ],
+        starts: DELIM_AND_VALUE
+      },
+      // case of an empty key
+      {
+        className: 'attr',
+        relevance: 0,
+        begin: KEY_OTHER + WS0 + '$'
+      }
+    ]
+  };
+}
+
+module.exports = properties;