From 22f08e4e5b025d297c68f2e1251e7f8616585882 Mon Sep 17 00:00:00 2001
From: David Baker <dave@matrix.org>
Date: Mon, 29 Jun 2015 18:16:49 +0100
Subject: [PATCH] Get rid of micromatch & reinstate our hacky version because
 micromatch, ironically, is huge.

---
 lib/pushprocessor.js | 28 ++++++++++++++++++++--------
 package.json         |  1 -
 2 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/lib/pushprocessor.js b/lib/pushprocessor.js
index 75217e72a..1a9b2aaab 100644
--- a/lib/pushprocessor.js
+++ b/lib/pushprocessor.js
@@ -1,5 +1,3 @@
-var micromatch = require("micromatch");
-
 /**
  * Construct a Push Processor.
  * @constructor
@@ -152,15 +150,29 @@ module.exports = function(client) {
         var val = valueForDottedKey(cond.key, ev);
         if (!val || typeof val != 'string') { return false; }
 
-        // Supportting ! in globs would mean figuring out when we
-        // don't want to use things as a regex, like room IDs
-        var pat = cond.pattern.replace("!", "\\!");
-
         if (cond.key == 'content.body') {
-            return micromatch.contains(val, pat);
+            pat = '\\b'+globToRegexp(cond.pattern)+'\\b';
         } else {
-            return micromatch.isMatch(val, pat);
+            pat = '^'+globToRegexp(cond.pattern)+'$';
         }
+        var val = valueForDottedKey(cond['key'], ev);
+        if (!val || typeof val != 'string') return false;
+        var regex = new RegExp(pat, 'i');
+        return !!val.match(regex);
+    };
+
+    var globToRegexp = function(glob) {
+        // From https://github.com/matrix-org/synapse/blob/abbee6b29be80a77e05730707602f3bbfc3f38cb/synapse/push/__init__.py#L132
+        // Because micromatch is about 130KB with dependencies, and minimatch is not much better.
+        var pat = escapeRegExp(glob);
+        pat = pat.replace(/\\\*/, '.*');
+        pat = pat.replace(/\?/, '.');
+        pat = pat.replace(/\\\[(!|)(.*)\\]/, function(match, p1, p2, offset, string) {
+            var first = p1 && '^' || '';
+            var second = p2.replace(/\\\-/, '-');
+            return '['+first+second+']';
+        });
+        return pat;
     };
 
     var valueForDottedKey = function(key, ev) {
diff --git a/package.json b/package.json
index bedfe0ece..a1b239391 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,6 @@
   "dependencies": {
     "browser-request": "^0.3.3",
     "browserify": "^10.2.3",
-    "micromatch": "^2.1.6",
     "q": "^1.4.1",
     "request": "^2.53.0"
   },