Cannot calculate image size on file_content under JRuby

[leifg]

I tried the following with JRuby (1.7.3):

data = File.read('/path/to/img.jpg')
ImageSize.new(data)

It raises me an argument error:

ArgumentError: invalid byte sequence in UTF-8
from org/jruby/RubyRegexp.java:1520:in `=~'

This code works with MRI (1.9.3).

Additionally the code:

ImageSize.path('/path/to/img.jpg').size

works on JRuby

[leifg]

Almost forgot:

Here is the stacktrace:

org/jruby/RubyRegexp.java:1520:in `=~'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/image_size-1.1.2/lib/image_size.rb:81:in `detect_format'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/image_size-1.1.2/lib/image_size.rb:52:in `initialize'
(pry):16:in `evaluate_ruby'
org/jruby/RubyBinding.java:134:in `eval'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/pry_instance.rb:328:in `evaluate_ruby'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/pry_instance.rb:278:in `re'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/pry_instance.rb:254:in `rep'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/pry_instance.rb:234:in `repl'
org/jruby/RubyKernel.java:1489:in `loop'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/pry_instance.rb:232:in `repl'
org/jruby/RubyKernel.java:1254:in `catch'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/pry_instance.rb:231:in `repl'
org/jruby/RubyKernel.java:1254:in `catch'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/pry_instance.rb:230:in `repl'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/pry_class.rb:170:in `start'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/cli.rb:201:in `(root)'
org/jruby/RubyProc.java:255:in `call'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/cli.rb:70:in `parse_options'
org/jruby/RubyArray.java:1617:in `each'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/lib/pry/cli.rb:70:in `parse_options'
/Users/leif/.rbenv/versions/jruby-1.7.4/lib/ruby/gems/shared/gems/pry-0.9.12.2-java/bin/pry:16:in `(root)'
org/jruby/RubyKernel.java:1073:in `load'
/Users/leif/.rbenv/versions/jruby-1.7.4/bin/pry:23:in `(root)'    

[toy]

Probably jruby bug:

binary_string = 'abc'.encode('ASCII-8BIT')
binary_string << 'def'.encode('utf-8')
p binary_string.encoding

But I'll try to fix it

[toy]

v1.1.3

[leifg]

Just tested it: it is fixed.

Great! Thanks for the quick bugfix