Squashed 'third_party/seasocks/' content from commit 016dc60

Change-Id: I195fa5bfd0c0e3cc66fbbefcc7b5170bafcf7a36
git-subtree-dir: third_party/seasocks
git-subtree-split: 016dc60b247e0d1d563aea6d22a9075e6884ab9f
diff --git a/src/main/c/seasocks/util/Html.h b/src/main/c/seasocks/util/Html.h
new file mode 100644
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+++ b/src/main/c/seasocks/util/Html.h
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+// Copyright (c) 2013, Matt Godbolt
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without 
+// modification, are permitted provided that the following conditions are met:
+// 
+// Redistributions of source code must retain the above copyright notice, this 
+// list of conditions and the following disclaimer.
+// 
+// Redistributions in binary form must reproduce the above copyright notice, 
+// this list of conditions and the following disclaimer in the documentation 
+// and/or other materials provided with the distribution.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+// POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+#include "seasocks/ToString.h"
+
+#include <functional>
+#include <iostream>
+#include <list>
+#include <sstream>
+#include <string>
+
+namespace seasocks {
+
+namespace html {
+
+class Element {
+    bool _isTextNode;
+    bool _needsClose;
+    std::string _nameOrText;
+    std::string _attributes;
+    std::list<Element> _children;
+
+    void append() {
+    }
+
+    template<typename T, typename... Args>
+    void append(const T& t, Args&& ...args) {
+        operator<<(t);
+        append(std::forward<Args>(args)...);
+    }
+
+    Element() : _isTextNode(true), _needsClose(false) {}
+public:
+    template<typename... Args>
+    Element(const std::string& name, bool needsClose, Args&&... args) :
+        _isTextNode(false),
+        _needsClose(needsClose),
+        _nameOrText(name) {
+        append(std::forward<Args>(args)...);
+    }
+
+    template<typename T>
+    static Element textElement(const T& text) {
+        Element e;
+        e._nameOrText = toString(text);
+        return e;
+    }
+
+    template<typename T>
+    Element& addAttribute(const char* attr, const T& value) {
+        _attributes += std::string(" ") + attr + "=\"" + toString(value) + "\"";
+        return *this;
+    }
+
+    Element& clazz(const std::string& clazz) {
+        return addAttribute("class", clazz);
+    }
+
+    Element& title(const std::string& title) {
+        return addAttribute("title", title);
+    }
+
+    Element& style(const std::string& style) {
+        return addAttribute("style", style);
+    }
+
+    Element& alt(const std::string& alt) {
+        return addAttribute("alt", alt);
+    }
+
+    Element& hidden() {
+        return addAttribute("style", "display:none;");
+    }
+
+    Element& id(const std::string& id) {
+        return addAttribute("id", id);
+    }
+
+    Element& operator <<(const char* child) {
+        _children.push_back(textElement(child));
+        return *this;
+    }
+
+    Element& operator <<(const std::string& child) {
+        _children.push_back(textElement(child));
+        return *this;
+    }
+
+    Element& operator <<(const Element& child) {
+        _children.push_back(child);
+        return *this;
+    }
+
+    template<class T>
+    typename std::enable_if<std::is_integral<T>::value || std::is_floating_point<T>::value, Element&>::type
+    operator <<(const T& child) {
+        _children.push_back(textElement(child));
+        return *this;
+    }
+
+    friend std::ostream& operator << (std::ostream& os, const Element& elem) {
+        if (elem._isTextNode) {
+            os << elem._nameOrText;
+            for (auto it = elem._children.cbegin(); it != elem._children.cend(); ++it) {
+                os << *it;
+            }
+            return os;
+        }
+        os << "<" << elem._nameOrText << elem._attributes << ">";
+        for (auto it = elem._children.cbegin(); it != elem._children.cend(); ++it) {
+            os << *it;
+        }
+        if (elem._needsClose) {
+            os << "</" << elem._nameOrText << ">";
+        }
+        return os;
+    }
+
+    template<typename C, typename F>
+    Element& addAll(const C& container, F functor) {
+        for (auto it = container.cbegin(); it != container.cend(); ++it) {
+            operator<<(functor(*it));
+        }
+        return *this;
+    }
+
+    std::string str() const {
+        std::ostringstream os;
+        os << *this;
+        return os.str();
+    }
+};
+
+#define HTMLELEM(XX) template<typename... Args> inline Element XX(Args&&... args) { return Element(#XX, true, std::forward<Args>(args)...); }
+HTMLELEM(html)
+HTMLELEM(head)
+HTMLELEM(title)
+HTMLELEM(body)
+HTMLELEM(h1)
+HTMLELEM(h2)
+HTMLELEM(h3)
+HTMLELEM(h4)
+HTMLELEM(h5)
+HTMLELEM(table)
+HTMLELEM(thead)
+HTMLELEM(tbody)
+HTMLELEM(tr)
+HTMLELEM(td)
+HTMLELEM(th)
+HTMLELEM(div)
+HTMLELEM(span)
+HTMLELEM(ul)
+HTMLELEM(ol)
+HTMLELEM(li)
+HTMLELEM(label)
+HTMLELEM(button)
+#undef HTMLELEM
+
+inline Element empty() { return Element::textElement(""); }
+
+template<typename T>
+inline Element text(const T& t) { return Element::textElement(t); }
+
+inline Element img(const std::string& src) { return Element("img", false).addAttribute("src", src); }
+
+inline Element checkbox() { return Element("input", false).addAttribute("type", "checkbox"); }
+
+inline Element externalScript(const std::string& src) { return Element("script", true).addAttribute("src", src).addAttribute("type", "text/javascript"); }
+
+inline Element inlineScript(const std::string& script) { return Element("script", true, script).addAttribute("type", "text/javascript"); }
+
+inline Element link(const std::string& href, const std::string& rel) {
+    return Element("link", false).addAttribute("href", href).addAttribute("rel", rel);
+}
+
+template<typename...Args> inline Element a(const std::string& href, Args&&... args) {
+    return Element("a", true, std::forward<Args>(args)...).addAttribute("href", href);
+}
+
+}  // namespace html
+
+}  // namespace seasocks