Class: TCD::Header

Inherits:
Object
  • Object
show all
Defined in:
lib/tcd/header.rb

Overview

Parser for TCD ASCII header section. The header contains [KEY] = VALUE pairs defining all encoding parameters.

Constant Summary collapse

REQUIRED_KEYS = 
%i[
    header_size number_of_records constituents
    start_year number_of_years
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(io) ⇒ Header

Returns a new instance of Header.



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# File 'lib/tcd/header.rb', line 14

def initialize(io)
    @params = {}
    parse(io)
    validate!
end

Instance Attribute Details

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/tcd/header.rb', line 12

def params
  @params
end

Instance Method Details

#[](key) ⇒ Object

Access header parameters by symbol key



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# File 'lib/tcd/header.rb', line 21

def [](key)
    @params[key]
end

#amplitude_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 57

def amplitude_bits;    @params[:amplitude_bits]; end

#amplitude_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 58

def amplitude_scale;   @params[:amplitude_scale]; end

#confidence_value_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 74

def confidence_value_bits; @params[:confidence_value_bits]; end

#constituent_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 98

def constituent_bits;  @params[:constituent_bits]; end

#constituent_size ⇒ Object 



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# File 'lib/tcd/header.rb', line 99

def constituent_size;  @params[:constituent_size]; end

#constituents ⇒ Object 



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# File 'lib/tcd/header.rb', line 38

def constituents;      @params[:constituents]; end

#countries ⇒ Object 



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# File 'lib/tcd/header.rb', line 104

def countries;         @params[:countries]; end

#country_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 103

def country_bits;      @params[:country_bits]; end

#country_size ⇒ Object 



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# File 'lib/tcd/header.rb', line 105

def country_size;      @params[:country_size]; end

#date_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 72

def date_bits;         @params[:date_bits]; end

#datum_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 92

def datum_bits;        @params[:datum_bits]; end

#datum_offset_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 70

def datum_offset_bits; @params[:datum_offset_bits]; end

#datum_offset_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 71

def datum_offset_scale; @params[:datum_offset_scale]; end

#datum_size ⇒ Object 



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# File 'lib/tcd/header.rb', line 94

def datum_size;        @params[:datum_size]; end

#datum_types ⇒ Object 



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# File 'lib/tcd/header.rb', line 93

def datum_types;       @params[:datum_types]; end

#direction_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 80

def direction_bits;    @params[:direction_bits]; end

#direction_unit_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 86

def direction_unit_bits; @params[:direction_unit_bits]; end

#direction_unit_size ⇒ Object 



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# File 'lib/tcd/header.rb', line 88

def direction_unit_size; @params[:direction_unit_size]; end

#direction_unit_types ⇒ Object 



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# File 'lib/tcd/header.rb', line 87

def direction_unit_types; @params[:direction_unit_types]; end

#end_of_file ⇒ Object 



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# File 'lib/tcd/header.rb', line 45

def end_of_file;       @params[:end_of_file]; end

#epoch_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 59

def epoch_bits;        @params[:epoch_bits]; end

#epoch_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 60

def epoch_scale;       @params[:epoch_scale]; end

#equilibrium_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 51

def equilibrium_bits;  @params[:equilibrium_bits]; end

#equilibrium_offset ⇒ Object 



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# File 'lib/tcd/header.rb', line 53

def equilibrium_offset; @params[:equilibrium_offset]; end

#equilibrium_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 52

def equilibrium_scale; @params[:equilibrium_scale]; end

#header_size ⇒ Object

Convenience accessors for commonly used parameters



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# File 'lib/tcd/header.rb', line 36

def header_size;       @params[:header_size]; end

#key?(key) ⇒ Boolean

Check if key exists

Returns:

  • (Boolean) 


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# File 'lib/tcd/header.rb', line 26

def key?(key)
    @params.key?(key)
end

#keys ⇒ Object

All parameter keys



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# File 'lib/tcd/header.rb', line 31

def keys
    @params.keys
end

#last_modified ⇒ Object 



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# File 'lib/tcd/header.rb', line 44

def last_modified;     @params[:last_modified]; end

#latitude_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 64

def latitude_bits;     @params[:latitude_bits]; end

#latitude_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 65

def latitude_scale;    @params[:latitude_scale]; end

#legalese_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 95

def legalese_bits;     @params[:legalese_bits]; end

#legalese_size ⇒ Object 



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# File 'lib/tcd/header.rb', line 97

def legalese_size;     @params[:legalese_size]; end

#legalese_types ⇒ Object 



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# File 'lib/tcd/header.rb', line 96

def legalese_types;    @params[:legalese_types]; end

#level_add_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 76

def level_add_bits;    @params[:level_add_bits]; end

#level_add_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 77

def level_add_scale;   @params[:level_add_scale]; end

#level_multiply_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 78

def level_multiply_bits; @params[:level_multiply_bits]; end

#level_multiply_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 79

def level_multiply_scale; @params[:level_multiply_scale]; end

#level_unit_bits ⇒ Object

Lookup table parameters



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# File 'lib/tcd/header.rb', line 83

def level_unit_bits;   @params[:level_unit_bits]; end

#level_unit_size ⇒ Object 



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# File 'lib/tcd/header.rb', line 85

def level_unit_size;   @params[:level_unit_size]; end

#level_unit_types ⇒ Object 



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# File 'lib/tcd/header.rb', line 84

def level_unit_types;  @params[:level_unit_types]; end

#longitude_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 66

def longitude_bits;    @params[:longitude_bits]; end

#longitude_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 67

def longitude_scale;   @params[:longitude_scale]; end

#major_rev ⇒ Object 



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# File 'lib/tcd/header.rb', line 42

def major_rev;         @params[:major_rev]; end

#minor_rev ⇒ Object 



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# File 'lib/tcd/header.rb', line 43

def minor_rev;         @params[:minor_rev]; end

#months_on_station_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 73

def months_on_station_bits; @params[:months_on_station_bits]; end

#node_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 54

def node_bits;         @params[:node_bits]; end

#node_offset ⇒ Object 



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# File 'lib/tcd/header.rb', line 56

def node_offset;       @params[:node_offset]; end

#node_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 55

def node_scale;        @params[:node_scale]; end

#number_of_records ⇒ Object 



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# File 'lib/tcd/header.rb', line 37

def number_of_records; @params[:number_of_records]; end

#number_of_years ⇒ Object 



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# File 'lib/tcd/header.rb', line 40

def number_of_years;   @params[:number_of_years]; end

#record_size_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 68

def record_size_bits;  @params[:record_size_bits]; end

#record_type_bits ⇒ Object

Record field parameters



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# File 'lib/tcd/header.rb', line 63

def record_type_bits;  @params[:record_type_bits]; end

#restriction_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 89

def restriction_bits;  @params[:restriction_bits]; end

#restriction_size ⇒ Object 



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# File 'lib/tcd/header.rb', line 91

def restriction_size;  @params[:restriction_size]; end

#restriction_types ⇒ Object 



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# File 'lib/tcd/header.rb', line 90

def restriction_types; @params[:restriction_types]; end

#speed_bits ⇒ Object

Bit field parameters



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# File 'lib/tcd/header.rb', line 48

def speed_bits;        @params[:speed_bits]; end

#speed_offset ⇒ Object 



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# File 'lib/tcd/header.rb', line 50

def speed_offset;      @params[:speed_offset]; end

#speed_scale ⇒ Object 



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# File 'lib/tcd/header.rb', line 49

def speed_scale;       @params[:speed_scale]; end

#start_year ⇒ Object 



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# File 'lib/tcd/header.rb', line 39

def start_year;        @params[:start_year]; end

#station_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 69

def station_bits;      @params[:station_bits]; end

#time_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 75

def time_bits;         @params[:time_bits]; end

#tzfile_bits ⇒ Object 



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# File 'lib/tcd/header.rb', line 100

def tzfile_bits;       @params[:tzfile_bits]; end

#tzfile_size ⇒ Object 



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# File 'lib/tcd/header.rb', line 102

def tzfile_size;       @params[:tzfile_size]; end

#tzfiles ⇒ Object 



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# File 'lib/tcd/header.rb', line 101

def tzfiles;           @params[:tzfiles]; end

#version ⇒ Object 



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# File 'lib/tcd/header.rb', line 41

def version;           @params[:version]; end