# frozen_string_literal: false

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#

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# output-method.rb - output methods used by irb

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# $Release Version: 0.9.6$

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# $Revision$

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# by Keiju ISHITSUKA(keiju@ruby-lang.org)

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#

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# --

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#

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#

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#

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module IRB

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# An abstract output class for IO in irb. This is mainly used internally by

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# IRB::Notifier. You can define your own output method to use with Irb.new,

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# or Context.new

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class OutputMethod

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class NotImplementedError < StandardError

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def initialize(val)

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super("Need to define `#{val}'")

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end

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end

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# Open this method to implement your own output method, raises a

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# NotImplementedError if you don't define #print in your own class.

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def print(*opts)

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raise NotImplementedError, "print"

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end

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# Prints the given +opts+, with a newline delimiter.

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def printn(*opts)

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print opts.join(" "), "\n"

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end

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

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# #parse_printf_format

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def printf(format, *opts)

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if /(%*)%I/ =~ format

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format, opts = parse_printf_format(format, opts)

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end

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print sprintf(format, *opts)

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end

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# Returns an array of the given +format+ and +opts+ to be used by

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# Kernel#sprintf, if there was a successful Regexp match in the given

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# +format+ from #printf

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#

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# %

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# <flag> [#0- +]

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# <minimum field width> (\*|\*[1-9][0-9]*\$|[1-9][0-9]*)

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# <precision>.(\*|\*[1-9][0-9]*\$|[1-9][0-9]*|)?

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# #<length modifier>(hh|h|l|ll|L|q|j|z|t)

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# <conversion specifier>[diouxXeEfgGcsb%]

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def parse_printf_format(format, opts)

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return format, opts if $1.size % 2 == 1

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end

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

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# character.

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def puts(*objs)

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for obj in objs

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print(*obj)

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print "\n"

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end

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end

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# Prints the given +objs+ calling Object#inspect on each.

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#

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# See #puts for more detail.

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def pp(*objs)

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

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end

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

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# given +prefix+.

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#

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# See #puts for more detail.

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def ppx(prefix, *objs)

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puts(*objs.collect{|obj| prefix+obj.inspect})

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end

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end

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# A standard output printer

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class StdioOutputMethod < OutputMethod

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# Prints the given +opts+ to standard output, see IO#print for more

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# information.

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def print(*opts)

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STDOUT.print(*opts)

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end

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end

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end

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