From 28d9de17f54c68db81aa3bfa6b5e77db5a528c24 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 22:23:02 +0200
Subject: [PATCH 01/17] perf: regex only on windows consistent strings

---
 lib/sprockets/uri_utils.rb | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/sprockets/uri_utils.rb b/lib/sprockets/uri_utils.rb
index 3ff51c38d..90297965f 100644
--- a/lib/sprockets/uri_utils.rb
+++ b/lib/sprockets/uri_utils.rb
@@ -48,7 +48,7 @@ def split_file_uri(uri)
       path.force_encoding(Encoding::UTF_8)
 
       # Hack for parsing Windows "file:///C:/Users/IEUser" paths
-      path.gsub!(/^\/([a-zA-Z]:)/, '\1'.freeze)
+      path.gsub!(/^\/([a-zA-Z]:)/, '\1'.freeze) if File::ALT_SEPARATOR
 
       [scheme, host, path, query]
     end
@@ -59,7 +59,7 @@ def split_file_uri(uri)
     def join_file_uri(scheme, host, path, query)
       str = "#{scheme}://"
       str << host if host
-      path = "/#{path}" unless path.start_with?("/")
+      path = "/#{path}" unless path.start_with?('/'.freeze)
       str << URI::Generic::DEFAULT_PARSER.escape(path)
       str << "?#{query}" if query
       str
@@ -72,7 +72,7 @@ def join_file_uri(scheme, host, path, query)
     # Returns true or false.
     def valid_asset_uri?(str)
       # Quick prefix check before attempting a full parse
-      str.start_with?("file://") && parse_asset_uri(str) ? true : false
+      str.start_with?('file://'.freeze) && parse_asset_uri(str) ? true : false
     rescue URI::InvalidURIError
       false
     end
@@ -109,7 +109,7 @@ def parse_asset_uri(uri)
     #
     # Returns String URI.
     def build_asset_uri(path, params = {})
-      join_file_uri("file", nil, path, encode_uri_query_params(params))
+      join_file_uri('file', nil, path, encode_uri_query_params(params))
     end
 
     # Internal: Parse file-digest dependency URI.

From bc5167e50c9e3a4b29847088a4ef59d55b8ef01d Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 22:24:25 +0200
Subject: [PATCH 02/17] perf: provide self.fast_compress, saves object inst and
 method_call consistent strings

---
 lib/sprockets/uri_tar.rb | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

diff --git a/lib/sprockets/uri_tar.rb b/lib/sprockets/uri_tar.rb
index eae0aad85..b580541a9 100644
--- a/lib/sprockets/uri_tar.rb
+++ b/lib/sprockets/uri_tar.rb
@@ -13,11 +13,11 @@ def initialize(uri, env)
       @root = env.root
       @env  = env
       uri   = uri.to_s
-      if uri.include?("://".freeze)
-        @scheme, _, @path = uri.partition("://".freeze)
-        @scheme << "://".freeze
+      if uri.include?('://'.freeze)
+        @scheme, _, @path = uri.partition('://'.freeze)
+        @scheme << '://'.freeze
       else
-        @scheme = "".freeze
+        @scheme = ''.freeze
         @path   = uri
       end
     end
@@ -35,6 +35,21 @@ def compress
       scheme + compressed_path
     end
 
+    def self.fast_compress(uri, root)
+      if uri.include?('://'.freeze)
+        scheme, _, path = uri.partition('://'.freeze)
+        scheme << '://'.freeze
+      else
+        scheme = ''.freeze
+        path   = uri
+      end
+      if compressed_path = PathUtils.split_subpath(root, path)
+        scheme + compressed_path
+      else
+        scheme + path
+      end
+    end
+
     # Internal: Tells us if we are using an absolute path
     #
     # Nix* systems start with a `/` like /Users/schneems.
@@ -66,7 +81,7 @@ def expand
         else
           # We always want to return an absolute uri,
           # make sure the path starts with a slash.
-          scheme + File.join("/".freeze, root, path)
+          scheme + File.join('/'.freeze, root, path)
         end
       end
     end
@@ -82,8 +97,8 @@ def expand
     # Returns String
     def compressed_path
       # windows
-      if !@root.start_with?("/".freeze) && path.start_with?("/".freeze)
-        consistent_root = "/".freeze + @root
+      if !@root.start_with?('/'.freeze) && path.start_with?('/'.freeze)
+        consistent_root = '/'.freeze + @root
       else
         consistent_root = @root
       end

From 72589068c01a86e0c249b40e7a31454caca29f10 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 22:25:00 +0200
Subject: [PATCH 03/17] match tests to regexp only on windows

---
 test/test_uri_utils.rb | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/test/test_uri_utils.rb b/test/test_uri_utils.rb
index 2c43f0a7e..fd0269269 100644
--- a/test/test_uri_utils.rb
+++ b/test/test_uri_utils.rb
@@ -45,15 +45,16 @@ def test_split_file_uri
 
     parts = split_file_uri("file:///usr/local/var/github/app/assets/javascripts/application.js")
     assert_equal ['file', nil, '/usr/local/var/github/app/assets/javascripts/application.js', nil], parts
+    if DOSISH
+      parts = split_file_uri("file:///C:/Documents%20and%20Settings/davris/FileSchemeURIs.doc")
+      assert_equal ['file', nil, 'C:/Documents and Settings/davris/FileSchemeURIs.doc', nil], parts
 
-    parts = split_file_uri("file:///C:/Documents%20and%20Settings/davris/FileSchemeURIs.doc")
-    assert_equal ['file', nil, 'C:/Documents and Settings/davris/FileSchemeURIs.doc', nil], parts
+      parts = split_file_uri("file:///D:/Program%20Files/Viewer/startup.htm")
+      assert_equal ['file', nil, 'D:/Program Files/Viewer/startup.htm', nil], parts
 
-    parts = split_file_uri("file:///D:/Program%20Files/Viewer/startup.htm")
-    assert_equal ['file', nil, 'D:/Program Files/Viewer/startup.htm', nil], parts
-
-    parts = split_file_uri("file:///C:/Program%20Files/Music/Web%20Sys/main.html?REQUEST=RADIO")
-    assert_equal ['file', nil, 'C:/Program Files/Music/Web Sys/main.html', 'REQUEST=RADIO'], parts
+      parts = split_file_uri("file:///C:/Program%20Files/Music/Web%20Sys/main.html?REQUEST=RADIO")
+      assert_equal ['file', nil, 'C:/Program Files/Music/Web Sys/main.html', 'REQUEST=RADIO'], parts
+    end
   end
 
   def test_join_uri_path
@@ -98,8 +99,10 @@ def test_parse_file_paths
       parse_asset_uri("file:///usr/local/var/github/app/assets/javascripts/application.js")
     assert_equal ["/usr/local/var/github/app/assets/javascripts/foo bar.js", {}],
       parse_asset_uri("file:///usr/local/var/github/app/assets/javascripts/foo%20bar.js")
-    assert_equal ["C:/Users/IEUser/Documents/github/app/assets/javascripts/application.js", {}],
-      parse_asset_uri("file:///C:/Users/IEUser/Documents/github/app/assets/javascripts/application.js")
+    if DOSISH
+      assert_equal ["C:/Users/IEUser/Documents/github/app/assets/javascripts/application.js", {}],
+        parse_asset_uri("file:///C:/Users/IEUser/Documents/github/app/assets/javascripts/application.js")
+    end
   end
 
   def test_parse_query_params
@@ -152,8 +155,10 @@ def test_parse_file_digest_uri
       parse_file_digest_uri("file-digest:///usr/local/var/github/app/assets/javascripts/application.js")
     assert_equal "/usr/local/var/github/app/assets/javascripts/foo bar.js",
       parse_file_digest_uri("file-digest:///usr/local/var/github/app/assets/javascripts/foo%20bar.js")
-    assert_equal "C:/Users/IEUser/Documents/github/app/assets/javascripts/application.js",
-      parse_file_digest_uri("file-digest:///C:/Users/IEUser/Documents/github/app/assets/javascripts/application.js")
+    if DOSISH
+      assert_equal "C:/Users/IEUser/Documents/github/app/assets/javascripts/application.js",
+        parse_file_digest_uri("file-digest:///C:/Users/IEUser/Documents/github/app/assets/javascripts/application.js")
+    end
   end
 
   def test_build_file_digest_uri

From 2ddd7691a5b4782224da350de839eda63da24dba Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 22:25:28 +0200
Subject: [PATCH 04/17] perf: to much work for nothing, no more

---
 lib/sprockets/http_utils.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/sprockets/http_utils.rb b/lib/sprockets/http_utils.rb
index 18b7d535c..7733fb7e4 100644
--- a/lib/sprockets/http_utils.rb
+++ b/lib/sprockets/http_utils.rb
@@ -56,6 +56,7 @@ def parse_q_values(values)
     #
     # Returns Array of matched Strings from available Array or [].
     def find_q_matches(q_values, available, &matcher)
+      return [] if available == []
       matcher ||= lambda { |a, b| a == b }
 
       matches = []

From 627675390c4f461f1bfad4b0d8571e86fa66a328 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 22:26:24 +0200
Subject: [PATCH 05/17] case is faster then .call_ing on a hash

---
 lib/sprockets/digest_utils.rb | 37 +++++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/lib/sprockets/digest_utils.rb b/lib/sprockets/digest_utils.rb
index 7dbcd976f..19349d81f 100644
--- a/lib/sprockets/digest_utils.rb
+++ b/lib/sprockets/digest_utils.rb
@@ -84,6 +84,39 @@ def detect_digest_class(bytes)
     }
     private_constant :ADD_VALUE_TO_DIGEST
 
+    def a_v_t_d(c, v, d)
+      case c
+      when 'String'.freeze then d << v
+      when 'FalseClass'.freeze then d << 'FalseClass'.freeze
+      when 'TrueClass'.freeze then d << 'TrueClass'.freeze
+      when 'NilClass'.freeze then d << 'NilClass'.freeze
+      when 'Symbol'.freeze
+        d << 'Symbol'.freeze
+        d << v.to_s
+      when 'Integer'.freeze
+        d << 'Integer'.freeze
+        d << v.to_s
+      when 'Array'.freeze
+        d << 'Array'.freeze
+        v.each { |element| a_v_t_d(element.class.name, element, d) }
+      when 'Hash'.freeze
+        d << 'Hash'.freeze
+        v.sort.each { |array| a_v_t_d('Array', array, d) }
+      when 'Set'.freeze
+        d << 'Set'.freeze
+        a_v_t_d('Array',v.to_a, d)
+      when 'Encoding'.freeze
+        d << 'Encoding'.freeze
+        d << v.name
+      when 'Fixnum'.freeze
+        d << 'Integer'.freeze
+        d << v.to_s
+      when 'Bignum'.freeze
+        d << 'Integer'.freeze
+        d << v.to_s
+      else raise TypeError, "couldn't digest #{c} - #{c.class} -- #{v}"
+      end
+    end
     # Internal: Generate a hexdigest for a nested JSON serializable object.
     #
     # This is used for generating cache keys, so its pretty important its
@@ -94,8 +127,8 @@ def detect_digest_class(bytes)
     # Returns a String digest of the object.
     def digest(obj)
       digest = digest_class.new
-
-      ADD_VALUE_TO_DIGEST[obj.class].call(obj, digest)
+      a_v_t_d(obj.class.name, obj, digest)
+      # ADD_VALUE_TO_DIGEST[obj.class].call(obj, digest)
       digest.digest
     end
 

From 54056d7c5e5af85128fb5c2449441a278e37b7eb Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 22:26:44 +0200
Subject: [PATCH 06/17] use fast_compress

---
 lib/sprockets/base.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sprockets/base.rb b/lib/sprockets/base.rb
index e5b61d7c9..8ecd20d03 100644
--- a/lib/sprockets/base.rb
+++ b/lib/sprockets/base.rb
@@ -100,7 +100,7 @@ def inspect
     end
 
     def compress_from_root(uri)
-      URITar.new(uri, self).compress
+      URITar.fast_compress(uri, self.root)
     end
 
     def expand_from_root(uri)

From 05a6c9ae2f2c0fe25529a69564de1e3c17437c1c Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 22:39:17 +0200
Subject: [PATCH 07/17] use caches for expensive paths

---
 lib/sprockets/loader.rb     | 19 ++++++++++++++++---
 lib/sprockets/path_utils.rb | 18 +++++++++++++++---
 lib/sprockets/resolve.rb    | 20 ++++++++++++++++++--
 3 files changed, 49 insertions(+), 8 deletions(-)

diff --git a/lib/sprockets/loader.rb b/lib/sprockets/loader.rb
index d39e0c7f4..a39eec79c 100644
--- a/lib/sprockets/loader.rb
+++ b/lib/sprockets/loader.rb
@@ -30,6 +30,9 @@ module Loader
     #
     # Returns Asset.
     def load(uri)
+      @@gorilla_ass_cache ||= {}
+      # TODO
+      app_root = '/'
       unloaded = UnloadedAsset.new(uri, self)
       if unloaded.params.key?(:id)
         unless asset = asset_from_cache(unloaded.asset_key)
@@ -52,9 +55,19 @@ def load(uri)
           # will confusingly be called again with `paths` set to nil where the asset will be
           # loaded from disk.
           if paths
-            digest = DigestUtils.digest(resolve_dependencies(paths))
-            if uri_from_cache = cache.get(unloaded.digest_key(digest), true)
-              asset_from_cache(UnloadedAsset.new(uri_from_cache, self).asset_key)
+            if uri[7..(app_root.length+6)] != app_root
+              unless @@gorilla_ass_cache.has_key?(uri)
+                digest = DigestUtils.digest(resolve_dependencies(paths))
+                if uri_from_cache = cache.get(unloaded.digest_key(digest), true)
+                  @@gorilla_ass_cache[uri] = asset_from_cache(UnloadedAsset.new(uri_from_cache, self).asset_key)
+                end
+              end
+              @@gorilla_ass_cache[uri]
+            else
+              digest = DigestUtils.digest(resolve_dependencies(paths))
+              if uri_from_cache = cache.get(unloaded.digest_key(digest), true)
+                asset_from_cache(UnloadedAsset.new(uri_from_cache, self).asset_key)
+              end
             end
           else
             load_from_unloaded(unloaded)
diff --git a/lib/sprockets/path_utils.rb b/lib/sprockets/path_utils.rb
index f6427fac3..3ca0968d9 100644
--- a/lib/sprockets/path_utils.rb
+++ b/lib/sprockets/path_utils.rb
@@ -12,10 +12,22 @@ module PathUtils
     #
     # Returns nil if the file does not exist.
     def stat(path)
-      if File.exist?(path)
-        File.stat(path.to_s)
+      # TODO
+      root = '/'
+      if (path[0...root.length] != root)
+        @@gorilla_patch_cached_stats ||= {}
+        return @@gorilla_patch_cached_stats[path] if @@gorilla_patch_cached_stats.has_key?(path)
+        @@gorilla_patch_cached_stats[path] = if File.exist?(path)
+                                               File.stat(path)
+                                             else
+                                               nil
+                                             end
       else
-        nil
+        if File.exist?(path)
+          File.stat(path)
+        else
+          nil
+        end
       end
     end
 
diff --git a/lib/sprockets/resolve.rb b/lib/sprockets/resolve.rb
index 9ae14fb3e..4c54c8906 100644
--- a/lib/sprockets/resolve.rb
+++ b/lib/sprockets/resolve.rb
@@ -153,6 +153,13 @@ def parse_accept_options(mime_type, types)
       end
 
       def path_matches(load_path, logical_name, logical_basename)
+        @@gorilla_djungle_banana_cache ||= {}
+        # TODO
+        app_dir = '/'
+        is_in_app = load_path[0...app_dir.size] == app_dir
+        if !is_in_app && @@gorilla_djungle_banana_cache.has_key?([load_path, logical_name, logical_basename])
+          return @@gorilla_djungle_banana_cache[[load_path, logical_name, logical_basename]]
+        end
         dirname    = File.dirname(File.join(load_path, logical_name))
         candidates = dirname_matches(dirname, logical_basename)
         deps       = file_digest_dependency_set(dirname)
@@ -170,11 +177,19 @@ def path_matches(load_path, logical_name, logical_basename)
         end
 
         deps.merge(file_digest_dependency_set(dirname))
-
-        return candidates.select { |fn, _| file?(fn) }, deps
+        result = candidates.select { |fn, _| file?(fn) }, deps
+        @@gorilla_djungle_banana_cache[[load_path, logical_name, logical_basename]] = result if !is_in_app
+        result
       end
 
       def dirname_matches(dirname, basename)
+        @@gorilla_djungle_banana_tree_cache ||= {}
+        # TODO
+        app_dir = '/'
+        is_in_app = dirname[0...app_dir.size] == app_dir
+        if !is_in_app && @@gorilla_djungle_banana_tree_cache.has_key?([dirname, basename])
+          return @@gorilla_djungle_banana_cache[[dirname, basename]]
+        end
         candidates = []
         entries = self.entries(dirname)
         entries.each do |entry|
@@ -184,6 +199,7 @@ def dirname_matches(dirname, basename)
             candidates << [File.join(dirname, entry), type]
           end
         end
+        @@gorilla_djungle_banana_tree_cache[[dirname, basename]] = candidates if !is_in_app
         candidates
       end
 

From 7edd51f782d2ef0a0d5e9a1205231b322c7abac0 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 22:42:20 +0200
Subject: [PATCH 08/17] fix for test case

---
 lib/sprockets/loader.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sprockets/loader.rb b/lib/sprockets/loader.rb
index a39eec79c..2fbcf75b6 100644
--- a/lib/sprockets/loader.rb
+++ b/lib/sprockets/loader.rb
@@ -55,7 +55,7 @@ def load(uri)
           # will confusingly be called again with `paths` set to nil where the asset will be
           # loaded from disk.
           if paths
-            if uri[7..(app_root.length+6)] != app_root
+            if uri.to_s[7..(app_root.length+6)] != app_root
               unless @@gorilla_ass_cache.has_key?(uri)
                 digest = DigestUtils.digest(resolve_dependencies(paths))
                 if uri_from_cache = cache.get(unloaded.digest_key(digest), true)

From 3c666b4fe2452927829f77962598afe636749dd6 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sat, 14 Oct 2017 23:23:16 +0200
Subject: [PATCH 09/17] fix

---
 lib/sprockets/uri_utils.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sprockets/uri_utils.rb b/lib/sprockets/uri_utils.rb
index 90297965f..8123e74bc 100644
--- a/lib/sprockets/uri_utils.rb
+++ b/lib/sprockets/uri_utils.rb
@@ -48,7 +48,7 @@ def split_file_uri(uri)
       path.force_encoding(Encoding::UTF_8)
 
       # Hack for parsing Windows "file:///C:/Users/IEUser" paths
-      path.gsub!(/^\/([a-zA-Z]:)/, '\1'.freeze) if File::ALT_SEPARATOR
+      path = path[1..-1] if File::ALT_SEPARATOR
 
       [scheme, host, path, query]
     end

From 7f85cd3a5b0b3fe1b05d7e7259b8e40ab7842208 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sun, 15 Oct 2017 00:19:14 +0200
Subject: [PATCH 10/17] fix

---
 lib/sprockets/uri_utils.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sprockets/uri_utils.rb b/lib/sprockets/uri_utils.rb
index 90297965f..8123e74bc 100644
--- a/lib/sprockets/uri_utils.rb
+++ b/lib/sprockets/uri_utils.rb
@@ -48,7 +48,7 @@ def split_file_uri(uri)
       path.force_encoding(Encoding::UTF_8)
 
       # Hack for parsing Windows "file:///C:/Users/IEUser" paths
-      path.gsub!(/^\/([a-zA-Z]:)/, '\1'.freeze) if File::ALT_SEPARATOR
+      path = path[1..-1] if File::ALT_SEPARATOR
 
       [scheme, host, path, query]
     end

From 3d03b3f0bb1f5f4865d1bfd2c645b3722af58a3d Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sun, 15 Oct 2017 00:25:21 +0200
Subject: [PATCH 11/17] add check_modified_root

---
 lib/sprockets/paths.rb | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/sprockets/paths.rb b/lib/sprockets/paths.rb
index 29b5382c5..235877c28 100644
--- a/lib/sprockets/paths.rb
+++ b/lib/sprockets/paths.rb
@@ -23,6 +23,16 @@ def root=(path)
     end
     private :root=
 
+    # requests outside of check_modified_root will be cached
+    def check_modified_root
+      config[:check_modified_root]
+    end
+    def check_modified_root=(path)
+      self.config = hash_reassoc(config, :check_modified_root) do
+        File.expand_path(path)
+      end
+    end
+
     # Returns an `Array` of path `String`s.
     #
     # These paths will be used for asset logical path lookups.

From 4a24c4daeaeb65597a45e733935d674803c7cbba Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sun, 15 Oct 2017 00:37:17 +0200
Subject: [PATCH 12/17] use check_modified_root

---
 lib/sprockets/loader.rb     |  3 +--
 lib/sprockets/path_utils.rb |  5 ++---
 lib/sprockets/resolve.rb    | 10 ++++------
 3 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/lib/sprockets/loader.rb b/lib/sprockets/loader.rb
index 2fbcf75b6..db53bdf0b 100644
--- a/lib/sprockets/loader.rb
+++ b/lib/sprockets/loader.rb
@@ -31,8 +31,7 @@ module Loader
     # Returns Asset.
     def load(uri)
       @@gorilla_ass_cache ||= {}
-      # TODO
-      app_root = '/'
+      app_root = Sprockets.check_modified_root
       unloaded = UnloadedAsset.new(uri, self)
       if unloaded.params.key?(:id)
         unless asset = asset_from_cache(unloaded.asset_key)
diff --git a/lib/sprockets/path_utils.rb b/lib/sprockets/path_utils.rb
index 3ca0968d9..fc2d57088 100644
--- a/lib/sprockets/path_utils.rb
+++ b/lib/sprockets/path_utils.rb
@@ -12,9 +12,8 @@ module PathUtils
     #
     # Returns nil if the file does not exist.
     def stat(path)
-      # TODO
-      root = '/'
-      if (path[0...root.length] != root)
+      app_root = Sprockets.check_modified_root
+      if (path[0...app_root.length] != app_root)
         @@gorilla_patch_cached_stats ||= {}
         return @@gorilla_patch_cached_stats[path] if @@gorilla_patch_cached_stats.has_key?(path)
         @@gorilla_patch_cached_stats[path] = if File.exist?(path)
diff --git a/lib/sprockets/resolve.rb b/lib/sprockets/resolve.rb
index 4c54c8906..5199b808f 100644
--- a/lib/sprockets/resolve.rb
+++ b/lib/sprockets/resolve.rb
@@ -154,9 +154,8 @@ def parse_accept_options(mime_type, types)
 
       def path_matches(load_path, logical_name, logical_basename)
         @@gorilla_djungle_banana_cache ||= {}
-        # TODO
-        app_dir = '/'
-        is_in_app = load_path[0...app_dir.size] == app_dir
+        app_root = Sprockets.check_modified_root
+        is_in_app = load_path[0...app_root.size] == app_root
         if !is_in_app && @@gorilla_djungle_banana_cache.has_key?([load_path, logical_name, logical_basename])
           return @@gorilla_djungle_banana_cache[[load_path, logical_name, logical_basename]]
         end
@@ -184,9 +183,8 @@ def path_matches(load_path, logical_name, logical_basename)
 
       def dirname_matches(dirname, basename)
         @@gorilla_djungle_banana_tree_cache ||= {}
-        # TODO
-        app_dir = '/'
-        is_in_app = dirname[0...app_dir.size] == app_dir
+        app_root = Sprockets.check_modified_root
+        is_in_app = dirname[0...app_root.size] == app_root
         if !is_in_app && @@gorilla_djungle_banana_tree_cache.has_key?([dirname, basename])
           return @@gorilla_djungle_banana_cache[[dirname, basename]]
         end

From 83db3e3d0bff25971504d8f3bab42124ab265fd6 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Sun, 15 Oct 2017 11:52:43 +0200
Subject: [PATCH 13/17] increase default cache use default cache size for new
 caches

---
 lib/sprockets/cache.rb              | 2 +-
 lib/sprockets/cache/memory_store.rb | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/sprockets/cache.rb b/lib/sprockets/cache.rb
index 5958f6415..94925b23d 100644
--- a/lib/sprockets/cache.rb
+++ b/lib/sprockets/cache.rb
@@ -60,7 +60,7 @@ def self.default_logger
     # cache - A compatible backend cache store instance.
     def initialize(cache = nil, logger = self.class.default_logger)
       @cache_wrapper = get_cache_wrapper(cache)
-      @fetch_cache   = Cache::MemoryStore.new(1024)
+      @fetch_cache   = Cache::MemoryStore.new
       @logger        = logger
     end
 
diff --git a/lib/sprockets/cache/memory_store.rb b/lib/sprockets/cache/memory_store.rb
index 0efe72822..35f38bb05 100644
--- a/lib/sprockets/cache/memory_store.rb
+++ b/lib/sprockets/cache/memory_store.rb
@@ -12,7 +12,7 @@ class Cache
     #
     class MemoryStore
       # Internal: Default key limit for store.
-      DEFAULT_MAX_SIZE = 1000
+      DEFAULT_MAX_SIZE = 10000
 
       # Public: Initialize the cache store.
       #

From b847bafbde7b69023337efb46b70e9624945f2f2 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Wed, 18 Oct 2017 16:24:28 +0200
Subject: [PATCH 14/17] optimize split_split_file_uri

---
 lib/sprockets/uri_utils.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/sprockets/uri_utils.rb b/lib/sprockets/uri_utils.rb
index 3ff51c38d..7685de532 100644
--- a/lib/sprockets/uri_utils.rb
+++ b/lib/sprockets/uri_utils.rb
@@ -47,8 +47,8 @@ def split_file_uri(uri)
       path = URI::Generic::DEFAULT_PARSER.unescape(path)
       path.force_encoding(Encoding::UTF_8)
 
-      # Hack for parsing Windows "file:///C:/Users/IEUser" paths
-      path.gsub!(/^\/([a-zA-Z]:)/, '\1'.freeze)
+      # Hack for parsing Windows "/C:/Users/IEUser" paths
+      path = path[1..-1] if File::ALT_SEPARATOR
 
       [scheme, host, path, query]
     end

From 6e66d69a45e0f7413f9a554d322b9bfbbeb33a41 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Wed, 18 Oct 2017 16:25:31 +0200
Subject: [PATCH 15/17] Automatically adjust MemoryStore cache size for a
 FileStore

---
 lib/sprockets/cache.rb            | 3 ++-
 lib/sprockets/cache/file_store.rb | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/sprockets/cache.rb b/lib/sprockets/cache.rb
index 5958f6415..0a54a4385 100644
--- a/lib/sprockets/cache.rb
+++ b/lib/sprockets/cache.rb
@@ -60,7 +60,8 @@ def self.default_logger
     # cache - A compatible backend cache store instance.
     def initialize(cache = nil, logger = self.class.default_logger)
       @cache_wrapper = get_cache_wrapper(cache)
-      @fetch_cache   = Cache::MemoryStore.new(1024)
+      fetch_cache_size = cache.respond_to?(:max_size) ? cache.max_size / 1000 : 1024
+      @fetch_cache   = Cache::MemoryStore.new(fetch_cache_size)
       @logger        = logger
     end
 
diff --git a/lib/sprockets/cache/file_store.rb b/lib/sprockets/cache/file_store.rb
index 98e777a5d..b5f01d8b3 100644
--- a/lib/sprockets/cache/file_store.rb
+++ b/lib/sprockets/cache/file_store.rb
@@ -19,6 +19,7 @@ class Cache
     class FileStore
       # Internal: Default key limit for store.
       DEFAULT_MAX_SIZE = 25 * 1024 * 1024
+      attr_reader :max_size
 
       # Internal: Default standard error fatal logger.
       #

From 7432e83b17aa579e647f3e0603e394f671cbd822 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Thu, 19 Oct 2017 19:52:22 +0200
Subject: [PATCH 16/17] Automatically adjust MemoryStore size for FileStore

---
 lib/sprockets/resolve.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sprockets/resolve.rb b/lib/sprockets/resolve.rb
index 5199b808f..3fa3847e6 100644
--- a/lib/sprockets/resolve.rb
+++ b/lib/sprockets/resolve.rb
@@ -155,7 +155,7 @@ def parse_accept_options(mime_type, types)
       def path_matches(load_path, logical_name, logical_basename)
         @@gorilla_djungle_banana_cache ||= {}
         app_root = Sprockets.check_modified_root
-        is_in_app = load_path[0...app_root.size] == app_root
+        is_in_app = load_path.start_with?(app_root.to_s)
         if !is_in_app && @@gorilla_djungle_banana_cache.has_key?([load_path, logical_name, logical_basename])
           return @@gorilla_djungle_banana_cache[[load_path, logical_name, logical_basename]]
         end

From 2bbba2d10a516fd872dc3d432cedad5e5e019594 Mon Sep 17 00:00:00 2001
From: Jan Biedermann <jan@kursator.de>
Date: Fri, 20 Oct 2017 21:29:39 +0200
Subject: [PATCH 17/17] fix

---
 lib/sprockets/resolve.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sprockets/resolve.rb b/lib/sprockets/resolve.rb
index 3fa3847e6..e66715633 100644
--- a/lib/sprockets/resolve.rb
+++ b/lib/sprockets/resolve.rb
@@ -186,7 +186,7 @@ def dirname_matches(dirname, basename)
         app_root = Sprockets.check_modified_root
         is_in_app = dirname[0...app_root.size] == app_root
         if !is_in_app && @@gorilla_djungle_banana_tree_cache.has_key?([dirname, basename])
-          return @@gorilla_djungle_banana_cache[[dirname, basename]]
+          return @@gorilla_djungle_banana_tree_cache[[dirname, basename]]
         end
         candidates = []
         entries = self.entries(dirname)