BrainFuck part 13 - Funky output
ANSI/VT100 control sequences
So, what the hell is this thing?
Using a special character named
<Esc>, it is possible to add some format codes that will modify the console text format options.
The ANSI/VT100 commands are the same on any terminal, the only thing that may differ is the way to obtain the Escape char. Let's keep it short and simple : on Bash, it's ASCII code 27.
So, let's just add a
27 char and then play with control sequences.
- Memory: empty
- Cursor: first cell
- Input: any text
- generate 9
- use this 9 to generate 27, 90, 45 and 108
- change this to 27, 91, 49 and 109
- this is [1m chars
- print those chars : style is bold !!!
- read a char and print while it's not null
- print ASCII code 10 (newline)
- change 49 to 48 and re-print those chars
- style reset to normal
+++++++++[->+++>++++++++++ generate the desired numbers >+++++>++++++++++++<<<<] ** part 2 ** >>+>++++>+<<<[.>] print escape control sequence ,[., print all chars from input] ++++++++++.[-] print newline <<-<<[.>] print reset escape control sequence
- Memory: 0 27 91 48 109 0 0 0 0 0 0
- Cursor: after 109
- Input: empty (read)
- Output: funky bold text
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