Class: IRB::OutputMethod

Relationships & Source Files
Namespace Children
Exceptions: `NotImplementedError`
Extension / Inclusion / Inheritance Descendants
Subclasses: StdioOutputMethod
Inherits:	Object
Defined in:	lib/irb/output-method.rb

Overview

An abstract output class for IO in irb. This is mainly used internally by Notifier. You can define your own output method to use with Irb.new, or Context.new

Instance Method Summary

#parse_printf_format(format, opts)

Returns an array of the given format and opts to be used by Kernel.sprintf, if there was a successful Regexp match in the given format from #printf
#pp(*objs)

Prints the given objs calling Object#inspect on each.
#ppx(prefix, *objs)

Prints the given objs calling Object#inspect on each and appending the given prefix.
#print(*opts)

Open this method to implement your own output method, raises a NotImplementedError if you don’t define #print in your own class.
#printf(format, *opts)

Extends IO#printf to format the given opts for Kernel.sprintf using #parse_printf_format
#printn(*opts)

Prints the given opts, with a newline delimiter.
#puts(*objs)

Calls #print on each element in the given objs, followed by a newline character.

Instance Method Details

#parse_printf_format(format, opts)

Returns an array of the given format and opts to be used by Kernel.sprintf, if there was a successful Regexp match in the given format from #printf

%
<flag>  [#0- +]
<minimum field width> (\*|\*[1-9][0-9]*\$|[1-9][0-9]*)
<precision>.(\*|\*[1-9][0-9]*\$|[1-9][0-9]*|)?
#<length modifier>(hh|h|l|ll|L|q|j|z|t)
<conversion specifier>[diouxXeEfgGcsb%]

[ GitHub ]

# File 'lib/irb/output-method.rb', line 54


def parse_printf_format(format, opts)
  return format, opts if $1.size % 2 == 1
end

#pp(*objs)

Prints the given objs calling Object#inspect on each.

See #puts for more detail.

[ GitHub ]

# File 'lib/irb/output-method.rb', line 70


def pp(*objs)
  puts(*objs.collect{|obj| obj.inspect})
end

#ppx(prefix, *objs)

Prints the given objs calling Object#inspect on each and appending the given prefix.

See #puts for more detail.

[ GitHub ]

# File 'lib/irb/output-method.rb', line 78


def ppx(prefix, *objs)
  puts(*objs.collect{|obj| prefix+obj.inspect})
end

#print(*opts)

Open this method to implement your own output method, raises a OutputMethod::NotImplementedError if you don’t define #print in your own class.

Raises:

(NotImplementedError)

[ GitHub ]

# File 'lib/irb/output-method.rb', line 26


def print(*opts)
  raise NotImplementedError, "print"
end

#printf(format, *opts)

Extends IO#printf to format the given opts for Kernel.sprintf using #parse_printf_format

[ GitHub ]

# File 'lib/irb/output-method.rb', line 37


def printf(format, *opts)
  if /(%*)%I/ =~ format
    format, opts = parse_printf_format(format, opts)
  end
  print sprintf(format, *opts)
end

#printn(*opts)

Prints the given opts, with a newline delimiter.

[ GitHub ]

# File 'lib/irb/output-method.rb', line 31


def printn(*opts)
  print opts.join(" "), "\n"
end

#puts(*objs)

Calls #print on each element in the given objs, followed by a newline character.

[ GitHub ]

# File 'lib/irb/output-method.rb', line 60


def puts(*objs)
  for obj in objs
    print(*obj)
    print "\n"
  end
end