Fix binary diffs unable to be viewed in history. Resolves #1650 (#1649)

* Fix binary diffs cause error when viewed
* Change color of git lines to #000000a0
* Update assets

lib/gollum/public/assets/.sprockets-manifest-35882cacf71c40928e0c2dc9b8acf8fe.json

@@ -0,0 +1 @@
+{"files":{"app-6e925e38a12a40c4fa9e0400cc874e0f4f97b66fdeb90a144dea527dbb544fbd.js":{"logical_path":"app.js","mtime":"2021-01-03T19:24:22+05:00","size":136032,"digest":"6e925e38a12a40c4fa9e0400cc874e0f4f97b66fdeb90a144dea527dbb544fbd","integrity":"sha256-bpJeOKEqQMT6ngQAzIdOD0+Xtm/euQoUTepSfbtUT70="},"editor-b621bfe2cb8823516fb3a96c32e82001b297f6754117b47bdad6e59db85a9d08.js":{"logical_path":"editor.js","mtime":"2020-12-30T18:08:26+05:00","size":747276,"digest":"b621bfe2cb8823516fb3a96c32e82001b297f6754117b47bdad6e59db85a9d08","integrity":"sha256-tiG/4suII1Fvs6lsMuggAbKX9nVBF7R72tblnbhanQg="},"app-4215e58002a43c4b2e9f0f7caa05a81c7c09d22a918c6fe40cd8e423db3110b5.css":{"logical_path":"app.css","mtime":"2021-01-03T19:58:10+05:00","size":298142,"digest":"4215e58002a43c4b2e9f0f7caa05a81c7c09d22a918c6fe40cd8e423db3110b5","integrity":"sha256-QhXlgAKkPEsunw98qgWoHHwJ0iqRjG/kDNjkI9sxELU="},"criticmarkup-31ae5d3282bbb8e7b7c3c9917e9fb68e3315a6b4a75da6cec48d21b8846905c4.css":{"logical_path":"criticmarkup.css","mtime":"2020-12-30T18:08:26+05:00","size":646,"digest":"31ae5d3282bbb8e7b7c3c9917e9fb68e3315a6b4a75da6cec48d21b8846905c4","integrity":"sha256-Ma5dMoK7uOe3w8mRfp+2jjMVprSnXabOxI0huIRpBcQ="},"print-512498c368be0d3fb1ba105dfa84289ae48380ec9fcbef948bd4e23b0b095bfb.css":{"logical_path":"print.css","mtime":"2020-12-30T18:08:26+05:00","size":75,"digest":"512498c368be0d3fb1ba105dfa84289ae48380ec9fcbef948bd4e23b0b095bfb","integrity":"sha256-USSYw2i+DT+xuhBd+oQomuSDgOyfy++Ui9TiOwsJW/s="}},"assets":{"app.js":"app-6e925e38a12a40c4fa9e0400cc874e0f4f97b66fdeb90a144dea527dbb544fbd.js","editor.js":"editor-b621bfe2cb8823516fb3a96c32e82001b297f6754117b47bdad6e59db85a9d08.js","app.css":"app-4215e58002a43c4b2e9f0f7caa05a81c7c09d22a918c6fe40cd8e423db3110b5.css","criticmarkup.css":"criticmarkup-31ae5d3282bbb8e7b7c3c9917e9fb68e3315a6b4a75da6cec48d21b8846905c4.css","print.css":"print-512498c368be0d3fb1ba105dfa84289ae48380ec9fcbef948bd4e23b0b095bfb.css"}}

lib/gollum/public/assets/.sprockets-manifest-459226ba5fc211b78ba9a3aa6ebde96c.json

@@ -1 +0,0 @@
-{"files":{"app-6e925e38a12a40c4fa9e0400cc874e0f4f97b66fdeb90a144dea527dbb544fbd.js":{"logical_path":"app.js","mtime":"2020-08-03T18:13:54+02:00","size":136032,"digest":"6e925e38a12a40c4fa9e0400cc874e0f4f97b66fdeb90a144dea527dbb544fbd","integrity":"sha256-bpJeOKEqQMT6ngQAzIdOD0+Xtm/euQoUTepSfbtUT70="},"editor-b2c10f22ef6ca1e120956a2d11ff4ca19ac44d7e7240f5cc43ec949184d8b708.js":{"logical_path":"editor.js","mtime":"2020-08-03T18:13:54+02:00","size":747273,"digest":"b2c10f22ef6ca1e120956a2d11ff4ca19ac44d7e7240f5cc43ec949184d8b708","integrity":"sha256-ssEPIu9soeEglWotEf9MoZrETX5yQPXMQ+yUkYTYtwg="},"app-b205e593a30f1cc0054e2e9ed9fc8af3658d8ef4a62b9708c20f204560deefb7.css":{"logical_path":"app.css","mtime":"2020-03-30T11:12:22+02:00","size":298111,"digest":"b205e593a30f1cc0054e2e9ed9fc8af3658d8ef4a62b9708c20f204560deefb7","integrity":"sha256-sgXlk6MPHMAFTi6e2fyK82WNjvSmK5cIwg8gRWDe77c="},"criticmarkup-31ae5d3282bbb8e7b7c3c9917e9fb68e3315a6b4a75da6cec48d21b8846905c4.css":{"logical_path":"criticmarkup.css","mtime":"2020-03-29T22:28:51+02:00","size":646,"digest":"31ae5d3282bbb8e7b7c3c9917e9fb68e3315a6b4a75da6cec48d21b8846905c4","integrity":"sha256-Ma5dMoK7uOe3w8mRfp+2jjMVprSnXabOxI0huIRpBcQ="},"print-512498c368be0d3fb1ba105dfa84289ae48380ec9fcbef948bd4e23b0b095bfb.css":{"logical_path":"print.css","mtime":"2020-03-30T11:12:22+02:00","size":75,"digest":"512498c368be0d3fb1ba105dfa84289ae48380ec9fcbef948bd4e23b0b095bfb","integrity":"sha256-USSYw2i+DT+xuhBd+oQomuSDgOyfy++Ui9TiOwsJW/s="}},"assets":{"app.js":"app-6e925e38a12a40c4fa9e0400cc874e0f4f97b66fdeb90a144dea527dbb544fbd.js","editor.js":"editor-b2c10f22ef6ca1e120956a2d11ff4ca19ac44d7e7240f5cc43ec949184d8b708.js","app.css":"app-b205e593a30f1cc0054e2e9ed9fc8af3658d8ef4a62b9708c20f204560deefb7.css","criticmarkup.css":"criticmarkup-31ae5d3282bbb8e7b7c3c9917e9fb68e3315a6b4a75da6cec48d21b8846905c4.css","print.css":"print-512498c368be0d3fb1ba105dfa84289ae48380ec9fcbef948bd4e23b0b095bfb.css"}}

lib/gollum/public/gollum/stylesheets/template.scss.erb

@@ -615,6 +615,10 @@ a {
     color: #999;
     background-color: #EAF2F5;
   }
+
+  .gg {
+    color: #000000a0;
+  }
 }
 
 .type-csharp {

lib/gollum/views/commit.rb

@@ -23,12 +23,19 @@ module Precious
       end
 
       def files
-        files = @diff.split(%r{^diff --git a/.+ b/.+$}).reject(&:empty?)
+        files = @diff.force_encoding(Encoding::UTF_8).scan(%r{
+          ^diff\ --git\         # diff start
+          .+?                   # diff body
+          (?=^diff\ --git|\Z)   # scan until next diff or string
+        }sxmu)
+
         files.map do |diff|
-          matched = diff.match(%r{(?<=^--- a/).+$})
-          matched = diff.match(%r{(?<=^\+\+\+ b/).+$}) if matched.nil?
+          match = diff.match(%r{^diff --git (")?[ab]/(.+)(?(1)") (")?[ab]/(.+)(?(3)")})
+          path = match[2]
+          path = match[4] if path.nil?
+
           {
-            path: matched[0],
+            path: path,
             lines: lines(diff)
           }
         end

lib/gollum/views/compare.rb

@@ -19,16 +19,21 @@ module Precious
 
       def lines(diff = @diff)
         lines = []
-        lines_to_parse = diff.split("\n")[4..-1]
-        # If the diff is of a rename, the diff header will be one line longer than normal because it will contain a line starting with '+++' to indicate the 'new' filename.
-        # Make sure to skip that header line if it is present.
-        lines_to_parse = lines_to_parse[1..-1] if lines_to_parse[0].start_with?('+++')
+        lines_to_parse = diff.split("\n")[3..-1]
+        lines_to_parse = lines_to_parse[2..-1] if lines_to_parse[0].start_with?('---')
+
+        if lines_to_parse.nil? || lines_to_parse.empty?
+          lines_to_parse = []  # File is created without content
+        else
+          lines_to_parse = lines_to_parse[1..-1] if lines_to_parse[0].start_with?('+++')
+        end
+
         lines_to_parse.each_with_index do |line, line_index|
           lines << { :line  => line,
                      :class => line_class(line),
                      :ldln  => left_diff_line_number(line),
                      :rdln  => right_diff_line_number(line) }
-        end if diff
+        end
         lines
       end
 
@@ -41,6 +46,8 @@ module Precious
       def line_class(line)
         if line =~ /^@@/
           'gc'
+        elsif git_line?(line)
+          'gg'
         elsif line =~ /^\+/
           'gi'
         elsif line =~ /^\-/
@@ -53,7 +60,7 @@ module Precious
       @left_diff_line_number = nil
 
       def left_diff_line_number(line)
-        if line =~ /^@@/
+        if git_line?(line)
           m, li                  = *line.match(/\-(\d+)/)
           @left_diff_line_number = li.to_i
           @current_line_number   = @left_diff_line_number
@@ -75,7 +82,7 @@ module Precious
       @right_diff_line_number = nil
 
       def right_diff_line_number(line)
-        if line =~ /^@@/
+        if git_line?(line)
           m, ri                   = *line.match(/\+(\d+)/)
           @right_diff_line_number = ri.to_i
           @current_line_number    = @right_diff_line_number
@@ -93,6 +100,10 @@ module Precious
         end
         ret
       end
+
+      def git_line?(line)
+        !!(line =~ /^(\\ No newline|Binary files|@@)/)
+      end
     end
   end
 end