Class: IPTCR::IPTC

Inherits:

Object

• Object
• IPTCR::IPTC

Defined in:

lib/iptcr/iptc.rb

Overview

# IPTC

## Notes

IPTC metadata is a series of records. Records contain datasets. Each dataset contains a data field, which is a particular value for that dataset. Repeated datasets represent mulitple fields for the same dataset, like for list data.

## References

• www.iptc.org/std/photometadata/2008/specification/IPTC-PhotoMetadata-2008.pdf

• www.iptc.org/std/IIM/4.1/specification/IIMV4.1.pdf

• en.wikipedia.org/wiki/ISO/IEC_2022#ISO.2FIEC_2022_character_sets

Defined Under Namespace

Classes: Field

Constant Summary

DEFAULT_ENCODING =

IPTC IIM specifics the default encoding is ISO646/4873, which is roughly ASCII

Encoding::ASCII

Instance Attribute Summary

• #fields ⇒ Object readonly

  Returns the value of attribute fields.

Instance Method Summary

• #[](name) ⇒ Object
• #encoding ⇒ Object
• #initialize(io, length:) ⇒ IPTC constructor

  A new instance of IPTC.

• #to_hash ⇒ Object

Constructor Details

#initialize(io, length:) ⇒ IPTC

Returns a new instance of IPTC.

# File 'lib/iptcr/iptc.rb', line 27

def initialize(io, length:)
  @fields = []
  read_fields(io, length: length)
end

Instance Attribute Details

#fields ⇒ Object (readonly)

Returns the value of attribute fields.

# File 'lib/iptcr/iptc.rb', line 22

def fields
  @fields
end

Instance Method Details

#[](name) ⇒ Object

# File 'lib/iptcr/iptc.rb', line 36

def [](name)
  field_values[name]
end

#encoding ⇒ Object

# File 'lib/iptcr/iptc.rb', line 32

def encoding
  @encoding || DEFAULT_ENCODING
end

#to_hash ⇒ Object

# File 'lib/iptcr/iptc.rb', line 40

def to_hash
  field_values
end