BASIC Console

A console written in javascript for old BASIC languages. This project aims to provide console similar to old BASIC interpreters inside browser.

Getting Started

Running Code

• download code or clone it using

git clone https://github.com/naumanumer/BASIC-console.git

• open index.html file from the root of project with any broswer (but chrome is recomended)

Dependencies

• jquery NOTE: all te denpendencies are provided with code itself.

Initializing

Initialize the console in your own html code:

var bconsoleElement = document.getElementById('ELEMENT_ID_HERE');
var bconsole = new BASIC_console(bconsoleElement, 80);
bconsole.init();

you can use this to handle Caret properly:

$("#console-input").keyup(function( e ) {
	 if(bconsole.isCaretShown){
	  if (e.keyCode == 13) {
		bconsole.insertLineBreak();
		$(this).val('');
		return false;
	  } else if (e.keyCode == 8){
		bconsole.backSpace();
		return false;
	  }
	  var text = $(this).val();
	  bconsole.write(text);
	  $(this).val('');
	 }
  });

API references

BASIC_console(element, width)

• element: any HTML DOM element
• width: int Number of chars in a line. (each char have 8px width and 19px height);

Props

• .crntPos: {line: LINE_NO, char: ROW_NO} current caret position.
• .isCaretShown : boolean true if caret is initialized

Methods

• .init() Initialize BASIC_console in the given element while initializing BASIC_console
  • Takes no arguments.
• .setBackground(color) Sets background color.
  • color: string any valid css color.
• .setForecolor(color) Sets foreground color.
  • color: string any valid css color. (still no sets caret color).
• .write(text) write text to at crntPos.
  • text: string any string but \n is not rendered as new line.
• .writeChar(char, pos) write a char at specified position.
  • char: string any string made of one char. if lenght of char is more then 1 it will increase width of tr. char can be unicode char i.e.█.
  • pos: {line: LINE_NO, char: ROW_NO} the position at which char is rendered.
• .writeAtLine(text, linenum) write a text at specified line number.
  • text: string any string rendered same as write
  • linenum: int any valid line number
• .insertLineBreak() insert a line break.
  • Takes no argument.
• .backSpace() remove a char previous from crntPos. Remove last char from previous last if crntPos is at 0 index of a line.
  • Takes no argument.
• .clear() Clear the whole console.
  • Takes no argument.
• .clearLine(linenum) clear specified line.
  • linenum: int any valid line number.
• .scrollUp() Scroll console content by one line.
  • Takes no argument.
• .cloneLine(linenum) Returns text from specified line
  • linenum: int any valid line number.
• .cloneText() Returns console text
  • Takes no argument.
• .getScreenSize() Returns screen dimensions. Format: { width: WIDTH_IN_PX, height: HEIGHT_IN_PX }
  • Takes no argument.
• .showCaret() shows caret.
  • Takes no argument.
• .removeCaret() hides caret.
  • Takes no argument
• .setCaretText(char) sets char as caret
  • char: string char that is rendered as caret default is █
• .getElementByPos(line, char) return td at position
  • line: int line number
  • char: int row number

Contribute

if you want to contribute in the project feel free to Fork this project made chages and make a pull request.

License

This project is Licensed under MIT License.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.