Author:

• Name: Yusuke Endoh
  Location: JP - Japan

To build:

    make

To use:

    ./prog > foo.c

Try:

    ./try.sh

The script will ask you if you wish to run make rake but this is not necessary to fully enjoy the entry. make rake will run the rake.sh script and then prog if all is built okay. If rake is not installed then it will check that gem is installed. If gem is not installed it will tell you where to get it and then tell you how to install rake. Otherwise, if rake is installed it will try running rake and if that fails to run it will tell you to run a gem command as either root or via sudo and then to try running make rake or ./rake.sh again. If rake succeeds it will run ./prog which can be used to build main.c.

What is the difference between running ./prog and main?

Judges’ remarks:

Big terminals with tiny fonts have their uses in certain cases. One of them is:

    make treacl
    ./treacl

which is shorthand for:

    ./prog < prog.c > treacle.c
    make treacle
    ./treacle

When using a smartphone to read the output, you may need to step back to see the bigger picture because that picture is worth more than 1000 words.

Author’s remarks:

Remarks

You may want to use a large display with a very small terminal font.

NOTICE to those who wish for a greater challenge:

If you want a greater challenge, don’t read any further: just try to understand the program via the source.

If you get stuck, come back and read below for additional hints and information.

Q(uine)R code generator

See quine-qr.html.

Primary files

• prog.c - entry source code
• Makefile - entry Makefile
• prog.orig.c - original source code
• Rakefile - Ruby Makefile
• quine-qr.html - information about Q(uine)R code generator
• rake.sh - make rake script
• try.sh - script to try entry
• alpha.rb - support program for Rakefile
• assemble.rb - support program for Rakefile
• ast-def.rb - support program for Rakefile
• gen-prog.rb - support program for Rakefile
• gen-table.rb - support program for Rakefile
• link.rb - support program for Rakefile
• machine.rb - support program for Rakefile
• parse.rb - support program for Rakefile
• prog-tmpl.c - source code template used by gen-prog
• register.rb - support program for Rakefile
• serialize.rb - support program for Rakefile
• src.rb - support program for Rakefile
• tool.rb - support program for Rakefile
• vm.c - source code of the VM

Secondary files

• 2014_endoh1.tar.bz2 - download entry tarball
• README.md - markdown source for this web page
• .entry.json - entry summary and manifest in JSON
• .gitignore - list of files that should not be committed under git
• .path - directory path from top level directory
• quine-qr.md - markdown source for deobfuscation.html
• index.html - this web page

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