Move exception text into exception object

1 files changed, 10 insertions, 1 deletions

diff --git a/Library/Homebrew/exceptions.rb b/Library/Homebrew/exceptions.rb
index a6a3380bb..66d5c33d2 100644
--- a/Library/Homebrew/exceptions.rb
+++ b/Library/Homebrew/exceptions.rb
@@ -208,7 +208,16 @@ class DownloadError < RuntimeError
 end
 
 # raised in CurlDownloadStrategy.fetch
-class CurlDownloadStrategyError < RuntimeError; end
+class CurlDownloadStrategyError < RuntimeError
+  def initialize(url)
+    case url
+    when %r[^file://(.+)]
+      super "File does not exist: #{$1}"
+    else
+      super "Download failed: #{url}"
+    end
+  end
+end
 
 # raised by safe_system in utils.rb
 class ErrorDuringExecution < RuntimeError