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@d-zero/readtext

v1.2.0

Published

A simple tool to read text files.

Readme

@d-zero/readtext

テキストファイルを「リスト」「キー値リスト」「グリッド」として読み込むユーティリティ。

共通契約: 空行と # で始まる行は無視される。

Installation

yarn add @d-zero/readtext

Usage

readList — 1 行 1 要素

import { readList } from '@d-zero/readtext/list';

const list = await readList('path/to/file.txt');

第 2 引数に区切り文字(string | RegExp)を渡すと { key, value } の配列になる:

const kv = await readList('path/to/file.txt', ' ');

readListWithPosition — 元の行番号・列番号付き

readList と同じ空行・コメント除外規則だが、各要素の値に加えて元ファイル内の 1-origin の行番号・列番号を保持する。不正な行を警告表示する際など、元の位置に戻す必要がある場合に使う。

import { readListWithPosition } from '@d-zero/readtext/list';

const items = await readListWithPosition('path/to/file.txt');
// items: [{ value: 'item1', line: 1, column: 1 }, ...]

文字列をそのまま渡したい場合は toListWithPosition を使う。

readGrid — 区切り文字で 2D 配列

import { readGrid } from '@d-zero/readtext/grid';

const grid = await readGrid<[string, string, string]>('path/to/file.txt');

第 2 引数で区切り文字を変更(デフォルト /\s+/)。