Markdown Statuses (#116)

* parse markdown statuses if desired

* add some preliminary docs for writing posts

internal/text/common.go

@@ -0,0 +1,46 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package text
+
+import (
+	"fmt"
+	"strings"
+)
+
+// preformat contains some common logic for making a string ready for formatting, which should be used for all user-input text.
+func preformat(in string) string {
+	// do some preformatting of the text
+	// 1. Trim all the whitespace
+	s := strings.TrimSpace(in)
+	return s
+}
+
+// postformat contains some common logic for html sanitization of text, wrapping elements, and trimming newlines and whitespace
+func postformat(in string) string {
+	// do some postformatting of the text
+	// 1. sanitize html to remove any dodgy scripts or other disallowed elements
+	s := SanitizeHTML(in)
+	// 2. wrap the whole thing in a paragraph
+	s = fmt.Sprintf(`<p>%s</p>`, s)
+	// 3. remove any cheeky newlines
+	s = strings.ReplaceAll(s, "\n", "")
+	// 4. remove any whitespace added as a result of the formatting
+	s = strings.TrimSpace(s)
+	return s
+}