Task-Manage/markdown.js at master · WHG555/Task-Manage · GitHub

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export class Todo {
    // e.g: '  - [x] hello'
    // prefix: '  - [ '
    // check: 'x'
    // suffix: '] '
    // body: hello
    constructor(lineIndex, prefix, checked, suffix, body) {
        this.lineIndex = lineIndex;
        this.prefix = prefix;
        this.checked = checked;
        this.suffix = suffix;
        this.body = body;
    }
    toMarkdown() {
        return `${this.prefix}${this.checked ? 'x' : ' '}${this.suffix}${this.body}`;
    }
}
export class MarkdownDocument {
    constructor(file, content) {
        this.file = file;
        this.lines = content.split("\n");
    }
    getTodos() {
        const todos = [];
        this.lines.forEach((line, lineIndex) => {
            const todo = this.parseTodo(lineIndex, line);
            if (todo) {
                todos.push(todo);
            }
        });
        return todos;
    }
    getTodo(lineIndex) {
        return this.parseTodo(lineIndex, this.lines[lineIndex]);
    }
    parseTodo(lineIndex, line) {
        const match = MarkdownDocument.todoRegexp.exec(line);
        if (match) {
            return new Todo(lineIndex, match.groups.prefix, match.groups.check === 'x', match.groups.suffix, match.groups.body);
        }
        return null;
    }
    modifyTodo(lineIndex, edit) {
        const line = this.lines[lineIndex];
        const todo = this.parseTodo(lineIndex, line);
        if (todo === null) {
            throw `Not a TODO line`;
        }
        if (edit.body !== undefined) {
            todo.body = edit.body;
        }
        if (edit.checked !== undefined) {
            todo.checked = edit.checked;
        }
        const newLine = todo.toMarkdown();
        this.lines[lineIndex] = newLine;
        console.info("Modify TODO: file=%s, index=%d, oldLine=%s, newLine=%s", this.file, lineIndex, line, newLine);
    }
    toMarkdown() {
        return this.lines.join('\n');
    }
}
MarkdownDocument.todoRegexp = /^(?<prefix>\s*\- \[)(?<check>.)(?<suffix>\]\s+)(?<body>.*)$/;
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