64 lines
1.0 KiB
JavaScript
64 lines
1.0 KiB
JavaScript
import { chars } from './utils.ts';
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import { getRuntime } from './runtime.ts';
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export class Row {
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chars: string[] = [];
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constructor(s: string = '') {
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this.chars = chars(s);
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}
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public toString(): string {
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return this.chars.join('');
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}
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}
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export class Document {
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#rows: Row[];
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private constructor() {
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this.#rows = [];
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}
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get numRows(): number {
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return this.#rows.length;
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}
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public static empty(): Document {
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return new Document();
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}
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public isEmpty(): boolean {
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return this.#rows.length === 0;
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}
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public async open(filename: string): Promise<Document> {
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const { file } = await getRuntime();
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// Clear any existing rows
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if (!this.isEmpty()) {
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this.#rows = [];
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}
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const rawFile = await file.openFile(filename);
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rawFile.split(/\r?\n/)
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.forEach((row) => this.appendRow(row));
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return this;
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}
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public row(i: number): Row | null {
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if (this.#rows[i] !== undefined) {
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return this.#rows[i];
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}
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return null;
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}
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protected appendRow(s: string): void {
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this.#rows.push(new Row(s));
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}
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}
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export default Document;
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