class MiniMagick::Image::Info
@private
Constants
- ASCII_ENCODED_EXIF_KEYS
Public Class Methods
new(path)
click to toggle source
# File lib/mini_magick/image/info.rb, line 7 def initialize(path) @path = path @info = {} end
Public Instance Methods
[](value, *args)
click to toggle source
# File lib/mini_magick/image/info.rb, line 12 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 else raw(value) end end
cheap_info(value)
click to toggle source
# File lib/mini_magick/image/info.rb, line 39 def cheap_info(value) @info.fetch(value) do format, width, height, size = self["%m %w %h %b"].split(" ") @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()
click to toggle source
# File lib/mini_magick/image/info.rb, line 35 def clear @info.clear end
colorspace()
click to toggle source
# File lib/mini_magick/image/info.rb, line 58 def colorspace @info["colorspace"] ||= self["%r"] end
decode_comma_separated_ascii_characters(encoded_value)
click to toggle source
# File lib/mini_magick/image/info.rb, line 128 def decode_comma_separated_ascii_characters(encoded_value) return encoded_value unless encoded_value.include?(',') encoded_value.scan(/\d+/).map(&:to_i).map(&:chr).join end
details()
click to toggle source
# File lib/mini_magick/image/info.rb, line 101 def details @info["details"] ||= ( details_string = identify(&:verbose) key_stack = [] details_string.lines.to_a[1..-1].each_with_object({}) do |line, details_hash| level = line[/^\s*/].length / 2 - 1 key_stack.pop until key_stack.size <= level key, _, value = line.partition(/:[\s\n]/).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()
click to toggle source
# File lib/mini_magick/image/info.rb, line 78 def exif @info["exif"] ||= ( output = self["%[EXIF:*]"] pairs = output.gsub(/^exif:/, "").split("\n").map { |line| line.split("=") } Hash[pairs].tap do |hash| ASCII_ENCODED_EXIF_KEYS.each do |key| next unless hash.has_key?(key) value = hash[key] hash[key] = decode_comma_separated_ascii_characters(value) end end ) end
identify() { |builder| ... }
click to toggle source
# File lib/mini_magick/image/info.rb, line 121 def identify MiniMagick::Tool::Identify.new do |builder| yield builder if block_given? builder << "#{@path}[0]" end end
mime_type()
click to toggle source
# File lib/mini_magick/image/info.rb, line 62 def mime_type "image/#{self["format"].downcase}" end
raw(value)
click to toggle source
# File lib/mini_magick/image/info.rb, line 93 def raw(value) @info["raw:#{value}"] ||= identify { |b| b.format(value) } end
raw_exif(value)
click to toggle source
# File lib/mini_magick/image/info.rb, line 74 def raw_exif(value) self["%[#{value}]"] end
resolution(unit = nil)
click to toggle source
# File lib/mini_magick/image/info.rb, line 66 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()
click to toggle source
# File lib/mini_magick/image/info.rb, line 97 def signature @info["signature"] ||= self["%#"] end