require 'irb/completion'
require 'irb/ext/save-history'

ARGV.concat [ "--readline", "--prompt-mode", "simple" ]
IRB.conf[:PROMPT_MODE] = :SIMPLE

# Save command history
IRB.conf[:SAVE_HISTORY] = 100
IRB.conf[:HISTORY_FILE] = "#{ENV['HOME']}/.irb-save-history"

# Custom pretty print certain obj types
#
# String: print length, content type and up to 128 bytes of inspect
# Fixnum/BigNum: also print out the hex value
module IRB
    class Irb
        def output_value
                        if @context.inspect?
                                case @context.last_value
                                when Fixnum
                                        printf @context.return_format, "%s (0x%08x)"%[@context.last_value.inspect,@context.last_value]
                                when Bignum
                                        printf @context.return_format, "%s (0x%016x)"%[@context.last_value.inspect,@context.last_value]
                when String
                    lv = @context.last_value
                    begin
                        # yes, this spawns a shell command after every IRB eval. 
                        # fast enough for %99.99 of stuff
                        f = IO.popen("file -","w+") 
                        f.write(lv)
                    rescue
                    ensure
                        f.flush
                        f.close_write
                        fileout = f.read.gsub("/dev/stdin: ",'').chomp
                    end
                    ins = lv[0,128]
                    if lv.length > 128
                        ins += "..."
                    end
                    printf @context.return_format, "length:  %d\n=> content: %s\n=> value:   %s\n"%[lv.length,fileout,ins.inspect]
                else
                                printf @context.return_format, @context.last_value.inspect
                                end
                        else
                        printf @context.return_format, @context.last_value
                        end
                end
        end
end