Class: Sycsvpro::Header

Inherits:
Filter
  • Object
show all
Includes:
Dsl
Defined in:
lib/sycsvpro/header.rb

Overview

Creates a header

Constant Summary

Constants included from Dsl

Dsl::COMMA_SPLITTER_REGEX

Instance Attribute Summary collapse

Attributes inherited from Filter

#boolean_filter, #date_format, #filter, #pattern, #pivot, #types

Instance Method Summary collapse

Methods included from Dsl

#clean_up, #params, #rows, #split_by_comma_regex, #str2utf8, #unstring, #write_to

Methods inherited from Filter

#has_filter?, #match_boolean_filter?, #pivot_each_column

Constructor Details

#initialize(header, options = {}) ⇒ Header

Create a new header



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# File 'lib/sycsvpro/header.rb', line 22

def initialize(header, options = {})
  @header_cols = split_by_comma_regex(header || "")
  @insert_cols = (options[:insert] || "").split(/,|;/)
  @positions   = options[:pos] || []
  @sort        = options[:sort]
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(id, *args, &block) ⇒ Object 



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# File 'lib/sycsvpro/header.rb', line 29

def method_missing(id, *args, &block)
  return @row_cols[$1.to_i] if id =~ /^c(\d+)$/
  super
end

Instance Attribute Details

#header_cols ⇒ Object (readonly)

Header columns



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# File 'lib/sycsvpro/header.rb', line 13

def header_cols
  @header_cols
end

#insert_cols ⇒ Object (readonly)

Columns that will be inserted into the header at the defined positions



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# File 'lib/sycsvpro/header.rb', line 15

def insert_cols
  @insert_cols
end

#positions ⇒ Object (readonly)

Positions where to insert the insert_cols



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# File 'lib/sycsvpro/header.rb', line 17

def positions
  @positions
end

#sort ⇒ Object (readonly)

Columns position from that on the header will be sorted



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# File 'lib/sycsvpro/header.rb', line 19

def sort
  @sort
end

Instance Method Details

#clear_header_cols ⇒ Object

Returns @header_cols without pattern. Will be sorted if sorted is not nil



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

def clear_header_cols
  clear_header = @header_cols.select { |col| col !~ /^\(?c\d+[=~+]{,2}/ }
  if @sort
    clear_header.slice!(0, @sort.to_i) + clear_header.sort
  else
    clear_header
  end
end

#column_of(value) ⇒ Object

Returns the index of the column



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

def column_of(value)
  clear_header_cols.index(value)
end

#process(line, values = true) ⇒ Object

Returns the header



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# File 'lib/sycsvpro/header.rb', line 35

def process(line, values = true)
  return "" if @header_cols.empty? && @insert_cols.empty?
  header_patterns = {}
  @row_cols = unstring(line).split(';')
  if @header_cols[0] == '*'
    @header_cols[0] = @row_cols
  else
    @header_cols.each_with_index do |h,i|
      if h =~ /^\(?c\d+(?:[=~]{,2}).*$/ 
        if col = eval(h)
          last_eval = $1
          unless @header_cols.index(last_eval) || @header_cols.index(col)
            if values
              @header_cols[i] = (h =~ /^\(?c\d+=~/) ? last_eval : col
              header_patterns[i+1] = h if h =~ /^\(?c\d+[=~+-.]{1,2}/
            else
              @header_cols[i] = col if h =~ /^\(?c\d+$/
            end
          end
        end
      else
        @header_cols[i] = h
      end
    end
  end
  insert_header_cols
  header_patterns.each { |i,h| @header_cols.insert(i,h) }
  to_s
end

#to_s ⇒ Object

Returns the header



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

def to_s
  clear_header_cols.join(';')
end

#value_of(column) ⇒ Object

Returns the value of column number



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# File 'lib/sycsvpro/header.rb', line 81

def value_of(column)
  clear_header_cols[column]
end