Class: AstroSubframeOrganizer::FilenameParsers::CR2FilenameParser

Inherits:
AstroSubframeOrganizer::FilenameParser show all
Includes:
Logging
Defined in:
lib/astro_subframe_organizer/filename_parsers/cr2_filename_parser.rb

Overview

Parser for Canon CR2 (Canon Raw 2) format files from ASIAir Plus.

CR2 files are Canon RAW image files that can be captured by cameras like the Canon T7. The filename structure is similar to FITS files when captured via ASIAir Plus.

Expected filename format:

Type_[Target]_[Mosaic]_Exposure_BinBinning_Camera_ISO/Gain_DateTime_CCDTemp_ImageIndex.cr2

Example:

Light_M42_1.0s_Bin1_T7_ISO100_20220508-120000_-10.0C_0001.cr2

Returns a hash with keys identical to FitsFilenameParser, except:

- :file_format (:cr2 instead of :fits)

The CR2 format uses CCD-TEMP instead of ISO for temperature tracking since RAW files preserve more metadata from the camera hardware.

Instance Attribute Summary

Attributes inherited from AstroSubframeOrganizer::FilenameParser

#filename, #path, #result

Instance Method Summary collapse

Methods included from Logging

#logger

Methods inherited from AstroSubframeOrganizer::FilenameParser

for_file, #initialize

Constructor Details

This class inherits a constructor from AstroSubframeOrganizer::FilenameParser

Instance Method Details

#parse ⇒ Hash

Returns Parsed metadata from CR2 filename.

Returns:

  • (Hash) —

    Parsed metadata from CR2 filename



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# File 'lib/astro_subframe_organizer/filename_parsers/cr2_filename_parser.rb', line 25

def parse # rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity
  base_name = extract_base_name
  parts = parse_parts(base_name)
  result = {}

  if @filename.start_with? 'IMG_'
    logger.error(
      'Raw images must be renamed before organizing. Run `astro-subframe-organizer raw rename`, ' \
      'then try again.',
    )
    exit(1)
  end

  begin
    result[:file_format] = :cr2
    result[:path] = @path
    result[:filename] = @filename

    # If the file is already organized somewhere, get the information from its path.
    result.merge!(extract_metadata_from_path)

    result[:type] = parts.shift
    result[:target] = parts.shift if result[:type] == 'Light'
    result[:mosaic_pane] = parts.shift if parts.first&.match?(/\A\d+-\d+\z/)
    result[:exposure] = parts.shift
    result[:bin] = parts.shift.gsub('Bin', '') if parts.first&.start_with?('Bin')
    result[:camera] = parts.shift if Equipment::Camera.all.include?(parts.first)
    result[:iso] = parts.shift.gsub('ISO', '') if parts.first&.start_with?('ISO')
    result[:gain] = parts.shift.gsub('gain', '') if parts.first&.start_with?('gain')
    result[:created_at] = DateTime.strptime(parts.shift, FILENAME_DT_FORMAT)
    result[:ccd_temp] = parts.shift
    result[:image_index] = parts.shift
  rescue StandardError => e
    logger.error "Failed to parse #{@path}: #{e}"
  ensure
    logger.debug result
  end

  FileMetadata.from_parsed_data(result)
end