From 90f8fe7e538bb7e52d2558152a0390e693f39b11 Mon Sep 17 00:00:00 2001
From: Akihiko Odaki <nekomanma@pixiv.co.jp>
Date: Thu, 29 Mar 2018 01:20:40 +0900
Subject: Introduce processor

---
 src/server/api/common/text/index.ts | 72 +++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 src/server/api/common/text/index.ts

(limited to 'src/server/api/common/text/index.ts')

diff --git a/src/server/api/common/text/index.ts b/src/server/api/common/text/index.ts
new file mode 100644
index 0000000000..1e2398dc38
--- /dev/null
+++ b/src/server/api/common/text/index.ts
@@ -0,0 +1,72 @@
+/**
+ * Misskey Text Analyzer
+ */
+
+const elements = [
+	require('./elements/bold'),
+	require('./elements/url'),
+	require('./elements/link'),
+	require('./elements/mention'),
+	require('./elements/hashtag'),
+	require('./elements/code'),
+	require('./elements/inline-code'),
+	require('./elements/quote'),
+	require('./elements/emoji')
+];
+
+export default (source: string) => {
+
+	if (source == '') {
+		return null;
+	}
+
+	const tokens = [];
+
+	function push(token) {
+		if (token != null) {
+			tokens.push(token);
+			source = source.substr(token.content.length);
+		}
+	}
+
+	let i = 0;
+
+	// パース
+	while (source != '') {
+		const parsed = elements.some(el => {
+			let _tokens = el(source, i);
+			if (_tokens) {
+				if (!Array.isArray(_tokens)) {
+					_tokens = [_tokens];
+				}
+				_tokens.forEach(push);
+				return true;
+			} else {
+				return false;
+			}
+		});
+
+		if (!parsed) {
+			push({
+				type: 'text',
+				content: source[0]
+			});
+		}
+
+		i++;
+	}
+
+	// テキストを纏める
+	tokens[0] = [tokens[0]];
+	return tokens.reduce((a, b) => {
+		if (a[a.length - 1].type == 'text' && b.type == 'text') {
+			const tail = a.pop();
+			return a.concat({
+				type: 'text',
+				content: tail.content + b.content
+			});
+		} else {
+			return a.concat(b);
+		}
+	});
+};
-- 
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