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Add option to include headers for #to_csv, and #to_tsv #30

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Add option to include headers for #to_csv, and #to_tsv #30

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31 changes: 18 additions & 13 deletions lib/rbhive/result_set.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -4,34 +4,39 @@ def initialize(rows, schema)
@schema = schema
super(rows.map {|r| @schema.coerce_row(r) })
end

def column_names
@schema.column_names
end

def column_type_map
@schema.column_type_map
end
def to_csv(out_file=nil)
to_seperated_output(",", out_file)

def to_csv(out_file=nil, opts={})
to_seperated_output(",", out_file, opts)
end
def to_tsv(out_file=nil)
to_seperated_output("\t", out_file)

def to_tsv(out_file=nil, opts={})
to_seperated_output("\t", out_file, opts)
end

def as_arrays
@as_arrays ||= self.map{ |r| @schema.coerce_row_to_array(r) }
end

private
def to_seperated_output(sep, out_file)

def to_seperated_output(sep, out_file, opts)
rows = self.map { |r| @schema.coerce_row_to_array(r).join(sep) }
rows.insert(0, separated_headers(sep)) if opts[:headers]
sv = rows.join("\n")
return sv if out_file.nil?
File.open(out_file, 'w+') { |f| f << sv }
end

def separated_headers(sep)
column_names.join(sep)
end
end
end
end