add basic support for preserving processing instructions in the AST

(bzr r4987)

7 files changed, 71 insertions, 5 deletions

diff --git a/src/xml/Makefile_insert b/src/xml/Makefile_insert
index 0a95a2062..ac7b03751 100644
--- a/src/xml/Makefile_insert
+++ b/src/xml/Makefile_insert
@@ -26,6 +26,7 @@ xml_libspxml_a_SOURCES =	\
 	xml/log-builder.h	\
 	xml/node-fns.cpp	\
 	xml/node-fns.h	\
+	xml/pi-node.h	\
 	xml/repr-io.cpp	\
 	xml/repr-sorting.cpp    \
 	xml/repr-sorting.h      \
diff --git a/src/xml/document.h b/src/xml/document.h
index de9164aa2..5065092d0 100644
--- a/src/xml/document.h
+++ b/src/xml/document.h
@@ -37,6 +37,7 @@ public:
     virtual Node *createElement(char const *name)=0;
     virtual Node *createTextNode(char const *content)=0;
     virtual Node *createComment(char const *content)=0;
+    virtual Node *createPI(char const *target, char const *content)=0;
 };
 
 }
diff --git a/src/xml/node.h b/src/xml/node.h
index 997f3ccda..ab7e2ba2f 100644
--- a/src/xml/node.h
+++ b/src/xml/node.h
@@ -31,7 +31,8 @@ enum NodeType {
     DOCUMENT_NODE,
     ELEMENT_NODE,
     TEXT_NODE,
-    COMMENT_NODE
+    COMMENT_NODE,
+    PI_NODE
 };
 
 // careful; GC::Anchored should only appear once in the inheritance
diff --git a/src/xml/pi-node.h b/src/xml/pi-node.h
new file mode 100644
index 000000000..c3f84b636
--- /dev/null
+++ b/src/xml/pi-node.h
@@ -0,0 +1,52 @@
+/*
+ * Inkscape::XML::PINode - simple XML comment implementation
+ *
+ * Copyright 2004-2005 MenTaLguY <mental@rydia.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * See the file COPYING for details.
+ *
+ */
+
+#ifndef SEEN_INKSCAPE_XML_PI_NODE_H
+#define SEEN_INKSCAPE_XML_PI_NODE_H
+
+#include <glib/gquark.h>
+#include "xml/simple-node.h"
+
+namespace Inkscape {
+
+namespace XML {
+
+struct PINode : public SimpleNode {
+    explicit PINode(GQuark target, Util::ptr_shared<char> content)
+    : SimpleNode(target)
+    {
+        setContent(content);
+    }
+
+    Inkscape::XML::NodeType type() const { return Inkscape::XML::PI_NODE; }
+
+protected:
+    SimpleNode *_duplicate(Document* doc) const { return new PINode(*this); }
+};
+
+}
+
+}
+
+#endif
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
diff --git a/src/xml/repr-io.cpp b/src/xml/repr-io.cpp
index 28e7c4f21..26537d750 100644
--- a/src/xml/repr-io.cpp
+++ b/src/xml/repr-io.cpp
@@ -395,10 +395,10 @@ sp_repr_do_read (xmlDocPtr doc, const gchar *default_ns)
                 root = NULL;
                 break;
             }
-        } else if ( node->type == XML_COMMENT_NODE ) {
-            Node *comment=sp_repr_svg_read_node(rdoc, node, default_ns, prefix_map);
-            rdoc->appendChild(comment);
-            Inkscape::GC::release(comment);
+        } else if ( node->type == XML_COMMENT_NODE || node->type == XML_PI_NODE ) {
+            Node *repr=sp_repr_svg_read_node(rdoc, node, default_ns, prefix_map);
+            rdoc->appendChild(repr);
+            Inkscape::GC::release(repr);
         }
     }
 
@@ -463,6 +463,9 @@ sp_repr_svg_read_node (Document *xml_doc, xmlNodePtr node, const gchar *default_
     if (node->type == XML_COMMENT_NODE)
         return xml_doc->createComment((const gchar *)node->content);
 
+    if (node->type == XML_PI_NODE)
+        return xml_doc->createPI((const gchar *)node->name, (const gchar *)node->content);
+
     if (node->type == XML_ENTITY_DECL) return NULL;
 
     sp_repr_qualified_name (c, 256, node->ns, node->name, default_ns, prefix_map);
@@ -717,6 +720,8 @@ sp_repr_write_stream (Node *repr, Writer &out, gint indent_level,
         repr_quote_write (out, repr->content());
     } else if (repr->type() == Inkscape::XML::COMMENT_NODE) {
         out.printf( "<!--%s-->", repr->content() );
+    } else if (repr->type() == Inkscape::XML::PI_NODE) {
+        out.printf( "<?%s %s?>", repr->name(), repr->content() );
     } else if (repr->type() == Inkscape::XML::ELEMENT_NODE) {
         sp_repr_write_stream_element(repr, out, indent_level, add_whitespace, elide_prefix, repr->attributeList(), inlineattrs, indent);
     } else {
diff --git a/src/xml/simple-document.cpp b/src/xml/simple-document.cpp
index 30e74a455..d0aa31939 100644
--- a/src/xml/simple-document.cpp
+++ b/src/xml/simple-document.cpp
@@ -19,6 +19,7 @@
 #include "xml/element-node.h"
 #include "xml/text-node.h"
 #include "xml/comment-node.h"
+#include "xml/pi-node.h"
 
 namespace Inkscape {
 
@@ -65,6 +66,10 @@ Node *SimpleDocument::createComment(char const *content) {
     return new CommentNode(Util::share_string(content));
 }
 
+Node *SimpleDocument::createPI(char const *target, char const *content) {
+    return new PINode(g_quark_from_string(target), Util::share_string(content));
+}
+
 void SimpleDocument::notifyChildAdded(Node &parent,
                                       Node &child,
                                       Node *prev)
diff --git a/src/xml/simple-document.h b/src/xml/simple-document.h
index 17e283f2a..cadda36cb 100644
--- a/src/xml/simple-document.h
+++ b/src/xml/simple-document.h
@@ -49,6 +49,7 @@ public:
     Node *createElement(char const *name);
     Node *createTextNode(char const *content);
     Node *createComment(char const *content);
+    Node *createPI(char const *target, char const *content);
 
     void notifyChildAdded(Node &parent, Node &child, Node *prev);