led-matrix-ts/dist/esm/lib/core/character-json.js

Highly customizable led matrix for the browser

import { Character } from "./character";
import { BitArray } from "../utils/bit-array";
export class CharactersJSON {
    static import(path, success) {
        fetch(path)
            .then((response) => {
            return response.text();
        })
            .then((response) => {
            success(CharactersJSON.parse(response));
        })
            .catch((error) => {
            throw `Couldn't fetch file: ${path}`;
        });
    }
    static export() {
    }
    static parse(json) {
        const data = JSON.parse(json);
        if (data == null) {
            throw 'Invalid character json file';
        }
        if (data.characters == null) {
            throw 'Invalid character json file: Can\'t find property characters';
        }
        return data.characters.map(x => {
            if (x.pattern == null) {
                throw 'Invalid character json file: Can\'t find property patterns for a character';
            }
            if (x.output == null) {
                throw 'Invalid character json file: Can\'t find property output for a character';
            }
            if (x.width == null) {
                throw 'Invalid character json file: Can\'t find property width for a character';
            }
            return new Character(x.pattern, new BitArray(x.output.map(x => x)), x.width);
        });
    }
    static stringify(characters) {
        if (characters == null || characters.length == 0) {
            return JSON.stringify("");
        }
        return JSON.stringify({
            characters: characters.map(x => {
                return {
                    patterns: x.pattern,
                    output: x.output.atIndexRange(0, x.output.size),
                    width: x.width
                };
            })
        });
    }
}
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