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# Blob is a Rails-specific wrapper around Gitlab::Git::Blob objects
class Blob < SimpleDelegator
CACHE_TIME = 60 # Cache raw blobs referred to by a (mutable) ref for 1 minute
CACHE_TIME_IMMUTABLE = 3600 # Cache blobs referred to by an immutable reference for 1 hour
# The maximum size of an SVG that can be displayed.
MAXIMUM_SVG_SIZE = 2.megabytes
# Wrap a Gitlab::Git::Blob object, or return nil when given nil
#
# This method prevents the decorated object from evaluating to "truthy" when
# given a nil value. For example:
#
# blob = Blob.new(nil)
# puts "truthy" if blob # => "truthy"
#
# blob = Blob.decorate(nil)
# puts "truthy" if blob # No output
def self.decorate(blob)
return if blob.nil?
new(blob)
end
# Returns the data of the blob.
#
# If the blob is a text based blob the content is converted to UTF-8 and any
# invalid byte sequences are replaced.
def data
if binary?
super
else
@data ||= super.encode(Encoding::UTF_8, invalid: :replace, undef: :replace)
end
end
def no_highlighting?
size && size > 1.megabyte
end
def only_display_raw?
size && truncated?
end
def svg?
text? && language && language.name == 'SVG'
end
def ipython_notebook?
text? && language&.name == 'Jupyter Notebook'
end
def sketch?
binary? && extname.downcase.delete('.') == 'sketch'
end
def size_within_svg_limits?
size <= MAXIMUM_SVG_SIZE
end
def video?
UploaderHelper::VIDEO_EXT.include?(extname.downcase.delete('.'))
end
def to_partial_path(project)
if lfs_pointer?
if project.lfs_enabled?
'download'
else
'text'
end
elsif image? || svg?
'image'
elsif ipython_notebook?
'notebook'
elsif sketch?
'sketch'
elsif text?
'text'
else
'download'
end
end
end
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