Class: Pcut::CLI

Inherits:
Object
  • Object
show all
Includes:
Term::ANSIColor
Defined in:
lib/pcut/cli.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/pcut/cli.rb', line 25

def initialize
  @delimiter  = "\t"
  @joiner     = @delimiter
  @fields     = []
  @quote      = nil
  @keep_quote = false
  @preview    = false
  @vertical   = false
  @color      = true
  @skip_continuous_delimiters = false
end

Instance Attribute Details

#color ⇒ Object

Returns the value of attribute color.



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# File 'lib/pcut/cli.rb', line 14

def color
  @color
end

#delimiter ⇒ Object

Returns the value of attribute delimiter.



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# File 'lib/pcut/cli.rb', line 14

def delimiter
  @delimiter
end

#fields ⇒ Object

Returns the value of attribute fields.



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# File 'lib/pcut/cli.rb', line 14

def fields
  @fields
end

#joiner ⇒ Object

Returns the value of attribute joiner.



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# File 'lib/pcut/cli.rb', line 14

def joiner
  @joiner
end

#keep_quote ⇒ Object

Returns the value of attribute keep_quote.



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# File 'lib/pcut/cli.rb', line 14

def keep_quote
  @keep_quote
end

#preview ⇒ Object

Returns the value of attribute preview.



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# File 'lib/pcut/cli.rb', line 14

def preview
  @preview
end

#quote ⇒ Object

Returns the value of attribute quote.



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# File 'lib/pcut/cli.rb', line 14

def quote
  @quote
end

#skip_continuous_delimiters ⇒ Object

Returns the value of attribute skip_continuous_delimiters.



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# File 'lib/pcut/cli.rb', line 14

def skip_continuous_delimiters
  @skip_continuous_delimiters
end

#vertical ⇒ Object

Returns the value of attribute vertical.



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# File 'lib/pcut/cli.rb', line 14

def vertical
  @vertical
end

Instance Method Details

#index_labeL(index) ⇒ Object 



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# File 'lib/pcut/cli.rb', line 151

def index_labeL(index)
  return "" unless @preview
  (@color ? red : '') + "[" +
  (@color ? yellow : '' ) + "#{index}" + 
  (@color ? red : '') + "]" + (@color ? reset : '')
end

#parse_field(str) ⇒ Object 



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# File 'lib/pcut/cli.rb', line 49

def parse_field(str)
  targets = []

  begin
    field_parser = Pcut::LineParser.new
    field_parser.set_delimiter(",")
    field_parser.set_quote_guard("[")
    field_parser.keep_quotes = true
    fields = field_parser.parse(str)

    fields.each do |field|
      index   = nil
      queries = []

      query_parser = Pcut::LineParser.new
      query_parser.set_delimiter(".")
      query_parser.set_quote_guard("[")
      query_parser.keep_quotes = true

      if field =~ /\./
        result = query_parser.parse(field)
        first  = result.shift
        index  = Pcut::RangeIndex.parse(first)
        result.each do |query_str|
          queries << Pcut::Query.parse(query_str)
        end
      else
        index = Pcut::RangeIndex.parse(field)
      end
      targets << [index, queries]
    end
  rescue => e
    STDOUT.puts e.to_s
    exit(1)
  end
  targets
end

#query_label(index, queries) ⇒ Object 



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# File 'lib/pcut/cli.rb', line 158

def query_label(index, queries)
  return "" unless @preview
  query_str = queries.each { |q| q.to_s }.join(".")

  (@color ? red : '') + "[" +
  (@color ? yellow : '' ) + "#{index}" +
  (@color ? green : '' ) + ".#{query_str}" +
  (@color ? red : '') + "]" + (@color ? reset : '')
end

#set_joiner(char) ⇒ Object 



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# File 'lib/pcut/cli.rb', line 37

def set_joiner(char)
  if char == "TAB"
    @joiner = "\t"
    return
  end
  if char.size != 1
    STDERR.puts "join char must be 1 byte char or 'TAB'"
    exit(1)
  end
  @joiner = char
end

#start(filepath) ⇒ Object 



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# File 'lib/pcut/cli.rb', line 87

def start(filepath)
  begin
    parser = Pcut::LineParser.new
    parser.set_delimiter(@delimiter)
    parser.skip_continuous_delimiters = @skip_continuous_delimiters
    @quote.each_char { |c| parser.set_quote_guard(c) } if @quote
    parser.keep_quotes = true if @keep_quote
  rescue => e
    STDOUT.puts e.to_s
    exit(1)
  end

  io = nil
  if filepath
    begin
      if File.directory?(filepath)
        raise ArgumentError, "#{filepath} is directory"
      end
      io = File.open(filepath, 'r')
    rescue => e
      $stdout.puts e.to_s
      exit(1)
    end
  end
  io ||= STDIN
  io.each_line do |line|
    line.chomp!
    buff   = [] # selected fields
    result = parser.parse(line)

    joiner = @vertical ? "\n" : @joiner

    # apply -f fields specification
    # (value pickup)
    if !@fields.empty?
      @fields.each do |setting|
        index   = setting[0]
        queries = setting[1]
        value = Pcut::RangeCollector.collect(result, index).join(@joiner)
        if queries.empty?
          buff << index_labeL(index.index) + (value || "")
        else
          queries.each do |query|
            last if value.nil?
            sliced = Pcut::RangeCollector.collect(
              value.split(query.delimiter), query.index)
            value = sliced.join(query.delimiter)
          end
          buff << query_label(index.index, queries) + (value || "")
        end
      end
    # no @fields is "all the fields"
    else
      result.each_with_index do |field, index|
        buff << index_labeL(index + 1) + (field || "")
      end
    end

    puts buff.join(joiner)
    puts "" if @vertical
  end
  exit(0)
end