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-rw-r--r--web/xhtml-fragment.cxx115
1 files changed, 115 insertions, 0 deletions
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+// file : web/xhtml-fragment.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#include <web/xhtml-fragment>
+
+#include <string>
+#include <cassert>
+
+#include <xml/parser>
+#include <xml/serializer>
+
+#include <web/xhtml>
+
+using namespace std;
+using namespace xml;
+
+namespace web
+{
+ namespace xhtml
+ {
+ fragment::
+ fragment (const string& text, const string& name)
+ {
+ // To parse the fragment make it a valid xml document, wrapping with the
+ // root element.
+ //
+ string doc ("<d>" + text + "</d>");
+
+ parser p (
+ doc.c_str (),
+ doc.size (),
+ name,
+ parser::receive_elements | parser::receive_characters |
+ parser::receive_attributes_event);
+
+ for (parser::event_type e: p)
+ {
+ switch (e)
+ {
+ case parser::start_element:
+ case parser::start_attribute:
+ {
+ const auto& n (p.qname ());
+
+ if (!n.namespace_ ().empty ())
+ throw parsing (
+ name, p.line (), p.column (), "namespace is not allowed");
+
+ events_.emplace_back (e, n.name ());
+ break;
+ }
+ case parser::end_element:
+ case parser::end_attribute:
+ {
+ events_.emplace_back (e, "");
+ break;
+ }
+ case parser::characters:
+ {
+ events_.emplace_back (e, p.value ());
+ break;
+ }
+ default:
+ assert (false);
+ }
+ }
+
+ // Unwrap the fragment removing the root element events.
+ //
+ assert (events_.size () >= 2);
+ events_.erase (events_.begin ());
+ events_.pop_back ();
+ }
+
+ void fragment::
+ operator() (serializer& s) const
+ {
+ for (const auto& e: events_)
+ {
+ switch (e.first)
+ {
+ case parser::start_element:
+ {
+ s.start_element (xmlns, e.second);
+ break;
+ }
+
+ case parser::start_attribute:
+ {
+ s.start_attribute (e.second);
+ break;
+ }
+ case parser::end_element:
+ {
+ s.end_element ();
+ break;
+ }
+ case parser::end_attribute:
+ {
+ s.end_attribute ();
+ break;
+ }
+ case parser::characters:
+ {
+ s.characters (e.second);
+ break;
+ }
+ default:
+ assert (false);
+ }
+ }
+ }
+ }
+}