From 6123e146194a733a4208e1d9a11325707b0c50f3 Mon Sep 17 00:00:00 2001
From: schneems <richard.schneeman@gmail.com>
Date: Fri, 1 Jul 2016 11:29:19 -0500
Subject: [PATCH 1/2] Backport #331 - Asset lookup 4x Faster in large
 directories

With this patch using the benchmark script https://github.com/schneems/sprockets-3.x-performance-regressions:

```
1500 lookups of the same asset took 2.900005
1500 lookups of 1500 different assets took 2.746331
```

Without this patch using the benchmark script:

```
1500 lookups of the same asset took 12.361615
1500 lookups of 1500 different assets took 12.627099
```

Which is a 4x speed bump.
---
 lib/sprockets/resolve.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/sprockets/resolve.rb b/lib/sprockets/resolve.rb
index d6cae616c..9ae14fb3e 100644
--- a/lib/sprockets/resolve.rb
+++ b/lib/sprockets/resolve.rb
@@ -178,6 +178,7 @@ def dirname_matches(dirname, basename)
         candidates = []
         entries = self.entries(dirname)
         entries.each do |entry|
+          next unless File.basename(entry).start_with?(basename)
           name, type, _, _ = parse_path_extnames(entry)
           if basename == name
             candidates << [File.join(dirname, entry), type]

From f2e36239c2cb96930ec9f6df3919c8d07bb6d77f Mon Sep 17 00:00:00 2001
From: schneems <richard.schneeman@gmail.com>
Date: Fri, 1 Jul 2016 12:12:57 -0500
Subject: [PATCH 2/2] Force gem version based on Ruby version in Travis

- Rack < 2.0 for Ruby < 2.2.2
- Json < 2.0 for Ruby < 2.0
---
 .travis.yml          | 1 +
 Gemfile              | 8 ++++++++
 gemfiles/Gemfile-1.9 | 2 ++
 3 files changed, 11 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index aedaed80f..d99dcc4dc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ rvm:
   - 2.0.0
   - 2.1
   - 2.2
+  - 2.3.1
 
 matrix:
   include:
diff --git a/Gemfile b/Gemfile
index 3be9c3cd8..bcaad77bc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,2 +1,10 @@
 source "https://rubygems.org"
 gemspec
+
+if Gem::Version.new(RUBY_VERSION) < Gem::Version.new("2.2.2")
+  gem 'rack', '< 2.0'
+end
+
+if Gem::Version.new(RUBY_VERSION) < Gem::Version.new("2.0")
+  gem 'json', '< 2.0'
+end
diff --git a/gemfiles/Gemfile-1.9 b/gemfiles/Gemfile-1.9
index a51700c42..927a4d9eb 100644
--- a/gemfiles/Gemfile-1.9
+++ b/gemfiles/Gemfile-1.9
@@ -1,3 +1,5 @@
 source "https://rubygems.org"
 gemspec path: '..'
 gem 'sass', '< 3.4'
+gem 'rack', '< 2.0'
+gem 'json', '< 2.0'