Class: Diamant::MimeFile

Inherits:
Object
  • Object
show all
Defined in:
lib/diamant/mimefile.rb

Overview

MIME aware wrapper for file

Constant Summary collapse

MIMETYPES = 
{
  '.gemini' => 'text/gemini',
  '.gmi' => 'text/gemini',
  '.txt' => 'text/plain',
  '.md' => 'text/markdown',
  '.org' => 'text/org',
  '.rss' => 'application/rss+xml',
  '.atom' => 'application/atom+xml',
  '.xml' => 'application/xml',
  '.svg' => 'image/svg+xml',
  '.bmp' => 'image/bmp',
  '.png' => 'image/png',
  '.jpg' => 'image/jpeg',
  '.jpeg' => 'image/jpeg',
  '.gif' => 'image/gif',
  '.webp' => 'image/webp',
  '.mp3' => 'audio/mpeg',
  '.ogg' => 'audio/ogg'
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ MimeFile

Returns a new instance of MimeFile.



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# File 'lib/diamant/mimefile.rb', line 30

def initialize(path)
  @path = path
  @body = File.read path
  @extension, @content_type = extract_info
  @category = classify
  validate!
  prepare_gem_file if @content_type == 'text/gemini'
end

Instance Attribute Details

#body ⇒ Object (readonly)

Returns the value of attribute body.



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# File 'lib/diamant/mimefile.rb', line 8

def body
  @body
end

#category ⇒ Object (readonly)

Returns the value of attribute category.



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# File 'lib/diamant/mimefile.rb', line 8

def category
  @category
end

#content_type ⇒ Object (readonly)

Returns the value of attribute content_type.



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# File 'lib/diamant/mimefile.rb', line 8

def content_type
  @content_type
end

#extension ⇒ Object (readonly)

Returns the value of attribute extension.



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# File 'lib/diamant/mimefile.rb', line 8

def extension
  @extension
end

Instance Method Details

#validate ⇒ Object

Disable metrics on purpose for big switch rubocop:disable Metrics/CyclomaticComplexity, Metrics/MethodLength



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# File 'lib/diamant/mimefile.rb', line 41

def validate
  return true if @category == :text

  case @content_type
  when 'image/jpeg'
    @body[0..1] == "\xFF\xD8"
  when 'image/png'
    @body[0..7] == "\x89PNG\r\n\u001A\n"
  when 'image/gif'
    @body[0..2] == 'GIF'
  when 'image/webp'
    @body[0..3] == 'RIFF' && @body[8..11] == 'WEBP'
  when 'image/bmp'
    @body[0..2] == 'BM'
  when 'image/svg+xml', 'application/xml',
       'application/rss+xml', 'application/atom+xml'
    @body[0..5] == '<?xml '
  when 'audio/mpeg'
    @body[0..3] == 'ID3'
  when 'audio/ogg'
    @body[0..4] == 'OggS'
  else
    false
  end
end

#validate! ⇒ Object

rubocop:enable Metrics/CyclomaticComplexity, Metrics/MethodLength

Raises:



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# File 'lib/diamant/mimefile.rb', line 68

def validate!
  return if validate

  raise MimeError, "#{@path} does not looks like a #{@content_type} file!"
end