https://github.com/mikdusan/demo.tty

short demo of a virtual TTY (teleprinter) device for Zig with xterm256-color support
https://github.com/mikdusan/demo.tty

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short demo of a virtual TTY (teleprinter) device for Zig with xterm256-color support

• Host: GitHub
• URL: https://github.com/mikdusan/demo.tty
• Owner: mikdusan
• Created: 2020-01-29T04:33:41.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2020-01-29T05:03:58.000Z (about 5 years ago)
• Last Synced: 2024-11-10T10:39:00.506Z (3 months ago)
• Language: Zig
• Size: 859 KB
• Stars: 4
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# demo.tty

short demo of a virtual TTY (teleprinter) device for Zig with xterm256-color support

`zig run example.zig`

- intermixes string formatting with tty primitives

- offers simple indent/dedent push/pop mechanism

- models a set of hues independent of actual color: { hue0, hue1, hue2, info, positive, negative, caution, alert }

- supports a few basic zig types: { `[] const u8`, `bool`, `unsigned-int` }

- formatting is evolving

- lots still to be done

![screenshot of example](screenshot/example.png)

#### unstable grammer/wishlist:

```

format_string :=  *

item :=  | 

maybe_replacement := '{' '{' | '}' '}' | 

replacement := '{' [arg_index '/'] [spec] ['!' coercion] '}'

arg_index := 

spec := bool_spec | unsigned_spec | signed_spec | float_spec | string_spec | pointer_spec

coercion := 'bool' | 'unsigned' | 'signed' | 'float' | 'string' | pointer' | 'type'

bool_spec     := [[fill] align] [width] [bool_style [bool_case]]

unsigned_spec := [[fill] align] [width] [unsigned_style ['p' | 'P'] ['\'' | '_' | ','] [['0'] iwidth]]

signed_spec   := [[fill] align] [width] [signed_style ['+'] ['p' | 'P']  ['\'' | '_' | ','] [['0'] iwidth]]

float_spec    := [[fill] align] [width] [float_style ['+'] ['p' | 'P']  ['\'' | '_' | ','] [['0'] iwidth] ['.' fwidth]]

string_spec   := [[fill] align] [width] [string_style]

pointer_spec  := [[fill] align] [width] [pointer_style ['_'] [['0'] iwidth]]

type_spec     := [[fill] align] [width] [type_style]

fill  := not ( '{' | '}' | align )

align := '<' | '>' | '^'

width := 

 

bool_style     := 'e' | 'o' | 'p' | 't' | 'y'

bool_case      := 'c' | 'l' | 'u'

unsigned_style := 'b' | 'o' | 'd' | 'x' | 'X'

signed_style   := 'b' | 'o' | 'd' | 'x' | 'X'

float_style    := 'e' | 'E' | 'f' | 'F' | '%'

string_style   := 's'

pointer_style  := 'p' | 't' | 'x'

type_style     := TODO

bool_case := 'l', 'u', 'c'

note: positional parameters:

- fill: '*' and arg must be u8 or []const u8

- width, iwidth, fwidth: '*' and arg must be unsigned

```