AnsiVtConsole.NetCore 1.0.12

AnsiVtConsole.NetCore

AnsiVtConsole.NetCore library provides ANSI VT support (cursor,colors,screen size) for multi-plateform (windows, linux, osx, arm) console applications using C# and .NET Core 6

This project is licensed under the terms of the MIT license: LICENSE.md

Features

The library provides functionalities needed to build console applications running in a terminal (WSL/WSL2, cmd.exe, ConEmu, bash, ...) with text interface. That includes:

• a text printer engine that supports print directives allowing to manage console functionalities from text itself, as html would do but with a simplest grammar (that can be configured). That makes possible colored outputs, cursor control, text scrolling and also dynamic C# execution (scripting), based on System.Console and ANSI VT100 / VT52 (VT100 type Fp or 3Fp, Fs, CSI, SGR)

• The console output can be controlled by:

  • tokens in a string (print directives)
  • as string shortcuts (dynamic ansi vt strings)
  • throught API methods

Usage

using cons=AnsiVtConsole.NetCore;
// get the ansi vt console
var console = new cons.AnsiVTConsole();

1. using the text parser:

console.Write("(br,f=yellow,b=red)yellow text on red background(br)(f=cyan)current time is: (exec=System.DateTime.Now,br)");

2. using the string shortcuts :

using static AnsiVtConsole.NetCore.Component.EchoDirective;

System.Console.Out.Writeline($"{Br}{Yellow}{BRed}yellow text on red background{Br}{Cyan}current time is: {System.DateTime.Now}{Br}");

both outputs:

Print directives:

text can contains echo directives that changes the echo behavior. the echo directive syntax is formed according to this pattern: (printDirective) or (printDirective=printDirectiveValue)

• multiple echo directives can be separated by a , that can be grouped in a single text in parentheses: (echoDirective1,echoDirective2=..,echoDirective3)
• an echo directive value can be written inside a 'code' text block, depending on each echo directive, with the syntax: [[...]]
• symbols of this grammar can be configured throught the class: AnsiVtConsole.NetCore.Component.Settings
• alternatively to the print directives you can use the strings shortcuts from the class: AnsiVtConsole.NetCore.Component.EchoDirective

1. Colorization

f=ConsoleColor      : set foreground color
f8=Int32            : set foreground 8bit color index, where 0 <= index <= 255
f24=Int32:Int32:Int32 : set foreground 24bit color red:green:blue, where 0 <= red,green,blue <= 255
f=ConsoleColor      : set foreground color
b=ConsoleColor      : set background color
b8=Int32            : set background 8bit color index, where 0 <= index <= 255
b24=Int32:Int32:Int32 : set background 24bit color red:green:blue, where 0 <= red,green,blue <= 255
df=ConsoleColor     : set default foreground
db=ConsoleColor     : set default background
bkf                 : backup foreground color
bkb                 : backup background color
rsf                 : restore foreground color
rsb                 : restore background color
rdc                 : restore default colors```

ConsoleColor := darkblue|darkgreen|darkcyan|darkred|darkmagenta|darkyellow|gray|darkgray|blue|green|cyan|red|magenta|yellow|white (not case sensitive)

2. Text decoration (vt100)

uon                 : underline on
invon               : inverted colors on
tdoff               : text decoration off and reset default colors
lion                : ligtht colors
bon                 : bold on
blon                : blink on (not supported on Windows)

3. Echo flow control

cls                 : clear screen
br                  : jump begin of next line (line break)
bkcr                : backup cursor position
rscr                : restore cursor position
crx=Int32           : set cursor x (0<=x<=WindowWidth)
cry=Int32           : set cursor y (0<=y<=WindowHeight)
cleft               : move cursor left
cright              : move cursor right
cup                 : move cursor up
cdown               : move cursor down
cnleft=Int32        : move cursor n characters left
cnright=Int32       : move cursor n characters right
cnup=Int32          : move cursor n lines up
cndown=Int32        : move cursor n lines down
cl                  : clear line
clleft              : clear line from cursor left
clright             : clear line from cursor right
chome               : move cursor to upper left corner
tab                 : add a tab

4. Script engine

exec=CodeBlock|[[CodeBlock]] : executes and echo result of a C# code block

5. Application control

info                : output infos about the console
exit                : exit the current process

Examples

To try these examples, compile and run the project AnsiVtConsole.NetCore.Examples:

Version history

1.0.12 - 12-17-2022

- rename Writeln methods by WriteLine
- suppress Log,Logln & logger refactoring
- add code documentation