92 lines
2.4 KiB
Ruby
92 lines
2.4 KiB
Ruby
#
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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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require "e2mmap"
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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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extend Exception2MessageMapper
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def_exception :NotImplementedError, "Need to define `%s'"
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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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OutputMethod.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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