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import peg from 'pegjs'; | ||
import { MfmNode, MfmPlainNode } from './node'; | ||
import { stringifyNode, stringifyTree } from './util'; | ||
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const parser: peg.Parser = require('./parser'); | ||
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export function parse(input: string): MfmNode[] { | ||
const nodes = parser.parse(input, { startRule: 'fullParser' }); | ||
return nodes; | ||
} | ||
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export function parsePlain(input: string): MfmPlainNode[] { | ||
const nodes = parser.parse(input, { startRule: 'plainParser' }); | ||
return nodes; | ||
} | ||
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export function toString(tree: MfmNode[]): string | ||
export function toString(node: MfmNode): string | ||
export function toString(node: MfmNode | MfmNode[]): string { | ||
if (Array.isArray(node)) { | ||
return stringifyTree(node); | ||
} | ||
else { | ||
return stringifyNode(node); | ||
} | ||
} | ||
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export function inspect(tree: MfmNode[], action: (node: MfmNode) => void): void { | ||
for (const node of tree) { | ||
action(node); | ||
if (node.children != null) { | ||
inspect(node.children, action); | ||
} | ||
} | ||
} | ||
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export function extract(nodes: MfmNode[], type: (MfmNode['type'] | MfmNode['type'][])): MfmNode[] { | ||
function predicate(node: MfmNode, type: (MfmNode['type'] | MfmNode['type'][])): boolean { | ||
if (Array.isArray(type)) { | ||
return (type.some(i => i == node.type)); | ||
} | ||
else { | ||
return (type == node.type); | ||
} | ||
} | ||
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const dest = [] as MfmNode[]; | ||
for (const node of nodes) { | ||
if (predicate(node, type)) { | ||
dest.push(node); | ||
} | ||
if (node.children != null) { | ||
dest.push(...extract(node.children, type)); | ||
} | ||
} | ||
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return dest; | ||
} |
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import assert from 'assert'; | ||
import { extract, inspect, parse, toString } from '../built/index'; | ||
import { | ||
TEXT, CENTER, FN, UNI_EMOJI, MENTION, EMOJI_CODE, HASHTAG, N_URL, BOLD, SMALL, ITALIC, STRIKE, QUOTE, MATH_BLOCK, SEARCH, CODE_BLOCK, LINK | ||
} from './node'; | ||
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describe('API', () => { | ||
describe('toString', () => { | ||
it('basic', () => { | ||
const input = | ||
`before | ||
<center> | ||
Hello [tada everynyan! 🎉] | ||
I'm @ai, A bot of misskey! | ||
https://github.com/syuilo/ai | ||
</center> | ||
after`; | ||
assert.strictEqual(toString(parse(input)), input); | ||
}); | ||
}); | ||
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describe('inspect', () => { | ||
it('replace text', () => { | ||
const input = 'good morning [tada everynyan!]'; | ||
const result = parse(input); | ||
inspect(result, node => { | ||
if (node.type == 'text') { | ||
node.props.text = node.props.text.replace(/good morning/g, 'hello'); | ||
} | ||
}); | ||
assert.strictEqual(toString(result), 'hello [tada everynyan!]'); | ||
}); | ||
}); | ||
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describe('extract', () => { | ||
it('basic', () => { | ||
const nodes = parse('@hoge @piyo @bebeyo'); | ||
const expect = [ | ||
MENTION('hoge', null, '@hoge'), | ||
MENTION('piyo', null, '@piyo'), | ||
MENTION('bebeyo', null, '@bebeyo') | ||
]; | ||
assert.deepStrictEqual(extract(nodes, 'mention'), expect); | ||
}); | ||
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it('nested', () => { | ||
const nodes = parse('abc:hoge:[tada 123 @hoge :foo:]:piyo:'); | ||
const expect = [ | ||
EMOJI_CODE('hoge'), | ||
EMOJI_CODE('foo'), | ||
EMOJI_CODE('piyo') | ||
]; | ||
assert.deepStrictEqual(extract(nodes, 'emojiCode'), expect); | ||
}); | ||
}); | ||
}); |
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