Class: VIPS::CSVReader

Inherits:
Reader
  • Object
show all
Defined in:
lib/vips/reader.rb,
ext/reader.c

Instance Attribute Summary collapse

Attributes inherited from Reader

#path

Instance Method Summary collapse

Methods inherited from Reader

read, recognized?

Methods included from Header

#band_fmt, #bands, #exif, #exif?, #get, #icc, #icc?, #n_elements, #set, #sizeof_element, #sizeof_line, #sizeof_pel, #x_offset, #x_res, #x_size, #y_offset, #y_res, #y_size

Constructor Details

#initialize(path, options = {}) ⇒ CSVReader

Creates a CSV reader.



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# File 'lib/vips/reader.rb', line 26

def initialize(path, options={})
  @line_skip = 0
  @whitespace = ' "'
  @separator = ";,\t"
  @line_limit = 0

  self.line_skip = options[:line_skip] if options.has_key?(:line_skip)
  self.whitespace = options[:whitespace] if options.has_key?(:whitespace)
  self.separator = options[:separator] if options.has_key?(:separator)
  self.line_limit = options[:line_limit] if options.has_key?(:line_limit)

  super path, options
end

Instance Attribute Details

#line_limit ⇒ Object

Returns the value of attribute line_limit.



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# File 'lib/vips/reader.rb', line 22

def line_limit
  @line_limit
end

#line_skip ⇒ Object

Returns the value of attribute line_skip.



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# File 'lib/vips/reader.rb', line 22

def line_skip
  @line_skip
end

#separator ⇒ Object

Returns the value of attribute separator.



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# File 'lib/vips/reader.rb', line 23

def separator
  @separator
end

#whitespace ⇒ Object

Returns the value of attribute whitespace.



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# File 'lib/vips/reader.rb', line 23

def whitespace
  @whitespace
end

Instance Method Details

#read ⇒ Object

Read the CSV file and return a VIPS Image object.



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# File 'lib/vips/reader.rb', line 41

def read
  str = "#{@path}:ski:#{@line_skip},whi:#{@whitespace}"
  str << ",lin:#{@line_limit == 0 ? -1 : @line_limit}"

  # VIPS magic open path limitation/bug -- we cannot specify the comma char
  str << ",sep:#{@separator}" unless @separator[/,/]
  read_internal str
end