Class: MiniMagick::Image::Info
- Inherits:
-
Object
- Object
- MiniMagick::Image::Info
- Defined in:
- lib/mini_magick/image/info.rb
Constant Summary collapse
- ASCII_ENCODED_EXIF_KEYS =
%w[ExifVersion FlashPixVersion]
Instance Method Summary collapse
- #[](value, *args) ⇒ Object
- #cheap_info(value) ⇒ Object
- #clear ⇒ Object
- #colorspace ⇒ Object
- #data ⇒ Object
- #details ⇒ Object
- #exif ⇒ Object
- #identify ⇒ Object
-
#initialize(path) ⇒ Info
constructor
A new instance of Info.
- #mime_type ⇒ Object
- #parse_warnings(raw_info) ⇒ Object
- #raw(value) ⇒ Object
- #raw_exif(value) ⇒ Object
- #resolution(unit = nil) ⇒ Object
- #signature ⇒ Object
Constructor Details
#initialize(path) ⇒ Info
Returns a new instance of Info.
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# File 'lib/mini_magick/image/info.rb', line 9 def initialize(path) @path = path @info = {} end |
Instance Method Details
#[](value, *args) ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 14 def [](value, *args) case value when "format", "width", "height", "dimensions", "size", "human_size" cheap_info(value) when "colorspace" colorspace when "mime_type" mime_type when "resolution" resolution(*args) when "signature" signature when /^EXIF\:/i raw_exif(value) when "exif" exif when "details" details when "data" data else raw(value) end end |
#cheap_info(value) ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 43 def cheap_info(value) @info.fetch(value) do format, width, height, size = parse_warnings(self["%m %w %h %b"]).split(" ") path = @path path = path.match(/\[\d+\]$/).pre_match if path =~ /\[\d+\]$/ @info.update( "format" => format, "width" => Integer(width), "height" => Integer(height), "dimensions" => [Integer(width), Integer(height)], "size" => File.size(path), "human_size" => size, ) @info.fetch(value) end rescue ArgumentError, TypeError raise MiniMagick::Invalid, "image data can't be read" end |
#clear ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 39 def clear @info.clear end |
#colorspace ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 75 def colorspace @info["colorspace"] ||= self["%r"] end |
#data ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 167 def data raise Error, "MiniMagick::Image#data isn't supported on GraphicsMagick. Use MiniMagick::Image#details instead." if MiniMagick.graphicsmagick? @info["data"] ||= ( json = MiniMagick::Tool::Convert.new do |convert| convert << path convert << "json:" end data = JSON.parse(json) data = data.fetch(0) if data.is_a?(Array) data.fetch("image") ) end |
#details ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 134 def details warn "[MiniMagick] MiniMagick::Image#details has been deprecated, as it was causing too many parsing errors. You should use MiniMagick::Image#data instead, which differs in a way that the keys are in camelcase." if MiniMagick.imagemagick? || MiniMagick.imagemagick7? @info["details"] ||= ( details_string = identify(&:verbose) key_stack = [] details_string.lines.to_a[1..-1].each_with_object({}) do |line, details_hash| next if !line.valid_encoding? || line.strip.length.zero? level = line[/^\s*/].length / 2 - 1 if level >= 0 key_stack.pop until key_stack.size <= level else # Some metadata, such as SVG clipping paths, will be saved without # indentation, resulting in a level of -1 last_key = details_hash.keys.last details_hash[last_key] = '' if details_hash[last_key].empty? details_hash[last_key] << line next end key, _, value = line.partition(/:[\s]/).map(&:strip) hash = key_stack.inject(details_hash) { |_hash, _key| _hash.fetch(_key) } if value.empty? hash[key] = {} key_stack.push key else hash[key] = value end end ) end |
#exif ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 97 def exif @info["exif"] ||= ( hash = {} output = self["%[EXIF:*]"] output.each_line do |line| line = line.chomp("\n") case MiniMagick.cli when :imagemagick, :imagemagick7 if match = line.match(/^exif:/) key, value = match.post_match.split("=", 2) value = decode_comma_separated_ascii_characters(value) if ASCII_ENCODED_EXIF_KEYS.include?(key) hash[key] = value else hash[hash.keys.last] << "\n#{line}" end when :graphicsmagick next if line == "unknown" key, value = line.split("=", 2) value.gsub!("\\012", "\n") # convert "\012" characters to newlines hash[key] = value end end hash ) end |
#identify ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 182 def identify MiniMagick::Tool::Identify.new do |builder| yield builder if block_given? builder << path end end |
#mime_type ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 79 def mime_type warn "[MiniMagick] MiniMagick::Image#mime_type has been deprecated, because it wasn't returning correct result for all formats ImageMagick supports. Unfortunately, returning the correct MIME type would be very slow, because it would require ImageMagick to read the whole file. It's better to use Marcel and MimeMagic gems, which are able to determine the MIME type just from the image header." "image/#{self["format"].downcase}" end |
#parse_warnings(raw_info) ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 65 def parse_warnings(raw_info) return raw_info unless raw_info.split("\n").size > 1 raw_info.split("\n").each do |line| # must match "%m %w %h %b" return line if line.match?(/^[A-Z]+ \d+ \d+ \d+(|\.\d+)([KMGTPEZY]{0,1})B$/) end raise TypeError end |
#raw(value) ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 126 def raw(value) @info["raw:#{value}"] ||= identify { |b| b.format(value) } end |
#raw_exif(value) ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 93 def raw_exif(value) self["%[#{value}]"] end |
#resolution(unit = nil) ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 85 def resolution(unit = nil) output = identify do |b| b.units unit if unit b.format "%x %y" end output.split(" ").map(&:to_i) end |
#signature ⇒ Object
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# File 'lib/mini_magick/image/info.rb', line 130 def signature @info["signature"] ||= self["%#"] end |