replace zxq.co/ripple/hanayo

vendor/github.com/frustra/bbcode/html.go

@@ -0,0 +1,94 @@
+// Copyright 2015 Frustra. All rights reserved.
+// Use of this source code is governed by the MIT
+// license that can be found in the LICENSE file.
+
+package bbcode
+
+import (
+	"html"
+	"net/url"
+	"strings"
+)
+
+// HTMLTag represents a DOM node.
+type HTMLTag struct {
+	Name     string
+	Value    string
+	Attrs    map[string]string
+	Children []*HTMLTag
+}
+
+// NewHTMLTag creates a new HTMLTag with string contents specified by value.
+func NewHTMLTag(value string) *HTMLTag {
+	return &HTMLTag{
+		Value:    value,
+		Attrs:    make(map[string]string),
+		Children: make([]*HTMLTag, 0),
+	}
+}
+
+func (t *HTMLTag) String() string {
+	var value string
+	if len(t.Value) > 0 {
+		value = html.EscapeString(t.Value)
+	}
+	var attrString string
+	for key, value := range t.Attrs {
+		attrString += " " + key + `="` + strings.Replace(html.EscapeString(value), "\n", "", -1) + `"`
+	}
+	if len(t.Children) > 0 {
+		var childrenString string
+		for _, child := range t.Children {
+			childrenString += child.String()
+		}
+		if len(t.Name) > 0 {
+			return value + "<" + t.Name + attrString + ">" + childrenString + "</" + t.Name + ">"
+		} else {
+			return value + childrenString
+		}
+	} else if len(t.Name) > 0 {
+		return value + "<" + t.Name + attrString + ">"
+	} else {
+		return value
+	}
+}
+
+func (t *HTMLTag) AppendChild(child *HTMLTag) *HTMLTag {
+	if child == nil {
+		t.Children = append(t.Children, NewHTMLTag(""))
+	} else {
+		t.Children = append(t.Children, child)
+	}
+	return t
+}
+
+func InsertNewlines(out *HTMLTag) {
+	if strings.ContainsRune(out.Value, '\n') {
+		parts := strings.Split(out.Value, "\n")
+		for i, part := range parts {
+			if i == 0 {
+				out.Value = parts[i]
+			} else {
+				out.AppendChild(NewlineTag())
+				if len(part) > 0 {
+					out.AppendChild(NewHTMLTag(part))
+				}
+			}
+		}
+	}
+}
+
+// Returns a new HTMLTag representing a line break
+func NewlineTag() *HTMLTag {
+	var out = NewHTMLTag("")
+	out.Name = "br"
+	return out
+}
+
+func ValidURL(raw string) string {
+	u, err := url.Parse(raw)
+	if err != nil {
+		return ""
+	}
+	return u.String()
+}