Class: Libis::Format::Converter::Base
- Inherits:
-
Object
- Object
- Libis::Format::Converter::Base
show all
- Includes:
- Tools::Logger
- Defined in:
- lib/libis/format/converter/base.rb
Instance Attribute Summary collapse
Class Method Summary
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Instance Method Summary
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Constructor Details
#initialize ⇒ Base
Returns a new instance of Base.
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# File 'lib/libis/format/converter/base.rb', line 19
def initialize
@options = {}
@flags = {}
end
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Instance Attribute Details
#flags ⇒ Object
Returns the value of attribute flags.
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# File 'lib/libis/format/converter/base.rb', line 17
def flags
@flags
end
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#options ⇒ Object
Returns the value of attribute options.
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# File 'lib/libis/format/converter/base.rb', line 17
def options
@options
end
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Class Method Details
.inherited(klass) ⇒ Object
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# File 'lib/libis/format/converter/base.rb', line 50
def Base.inherited( klass )
Repository.register klass
class << self
def conversions
input_types.inject({}) do |hash, input_type|
hash[input_type] = output_types
hash
end
end
def input_type?(type_id)
input_types.include? type_id
end
def output_type?(type_id)
output_types.include? type_id
end
def input_mimetype?(mimetype)
type_id = TypeDatabase.instance.mime_types(mimetype).first
input_type? type_id
end
def output_mimetype?(mimetype)
type_id = TypeDatabase.instance.mime_types(mimetype).first
output_type? type_id
end
def conversion?(input_type, output_type)
conversions[input_type] and conversions[input_type].any? { |t| t == output_type }
end
def output_for(input_type)
conversions[input_type]
end
def extension?(extension)
!TypeDatabase.ext_types(extension).first.nil?
end
end
end
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# File 'lib/libis/format/converter/base.rb', line 33
def self.input_types(_ = nil)
raise RuntimeError, 'Method #input_types needs to be overridden in converter'
end
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.output_types(_ = nil) ⇒ Object
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# File 'lib/libis/format/converter/base.rb', line 37
def self.output_types(_ = nil)
raise RuntimeError, 'Method #output_types needs to be overridden in converter'
end
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Instance Method Details
#convert(source, target, format, opts = {}) ⇒ Object
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# File 'lib/libis/format/converter/base.rb', line 24
def convert(source, target, format, opts = {})
unless File.exist? source
error "Cannot find file '#{source}'."
return nil
end
@options.merge!(opts[:options]) if opts[:options]
@flags.merge!(opts[:flags]) if opts[:flags]
end
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#using_temp(target) ⇒ Object
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# File 'lib/libis/format/converter/base.rb', line 42
def using_temp(target)
tempfile = File.join(Dir.tmpdir, Dir::Tmpname.make_tmpname(['convert', File.extname(target)], File.basename(target, '.*').gsub(/\s/, '_')))
result = yield tempfile
return nil unless result
FileUtils.move result, target
target
end
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