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-rw-r--r--src/attribute-sort-util.cpp181
1 files changed, 181 insertions, 0 deletions
diff --git a/src/attribute-sort-util.cpp b/src/attribute-sort-util.cpp
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+/*
+ * attribute-sort-util.cpp
+ *
+ * Created on: Jun 10, 2016
+ * Author: Tavmjong Bah
+ */
+
+/**
+ * Utility functions for sorting attributes by name.
+ */
+
+#include <fstream>
+#include <sstream>
+#include <iostream>
+#include <vector>
+#include <utility> // std::pair
+#include <algorithm> // std::sort
+
+#include <glibmm/ustring.h>
+
+#include "attribute-sort-util.h"
+
+#include "xml/repr.h"
+#include "xml/attribute-record.h"
+#include "xml/sp-css-attr.h"
+
+#include "attributes.h"
+
+using Inkscape::XML::Node;
+using Inkscape::XML::AttributeRecord;
+
+static void sp_attribute_sort_recursive(Node& repr);
+static void sp_attribute_sort_element(Node& repr);
+static void sp_attribute_sort_style(Node& repr);
+static void sp_attribute_sort_style(Node& repr, SPCSSAttr& css);
+
+/**
+ * Sort attributes by name.
+ */
+void sp_attribute_sort_tree(Node& repr) {
+
+ sp_attribute_sort_recursive( repr );
+}
+
+/**
+ * Sort recursively over all elements.
+ */
+static void sp_attribute_sort_recursive(Node& repr) {
+
+ if( repr.type() == Inkscape::XML::NodeType::ELEMENT_NODE ) {
+ Glib::ustring element = repr.name();
+
+ // Only sort elements in svg namespace
+ if( element.substr(0,4) == "svg:" ) {
+ sp_attribute_sort_element( repr );
+ }
+ }
+
+ for(Node *child=repr.firstChild() ; child ; child = child->next()) {
+ sp_attribute_sort_recursive( *child );
+ }
+}
+
+/**
+ * Compare function
+ */
+static bool cmp(std::pair< Glib::ustring, Glib::ustring > const &a,
+ std::pair< Glib::ustring, Glib::ustring > const &b) {
+ auto val_a = sp_attribute_lookup(a.first.c_str());
+ auto val_b = sp_attribute_lookup(b.first.c_str());
+ if (val_a == SPAttr::INVALID) return false; // Unknown attributes at end.
+ if (val_b == SPAttr::INVALID) return true; // Unknown attributes at end.
+ return val_a < val_b;
+}
+
+/**
+ * Sort attributes on an element
+ */
+static void sp_attribute_sort_element(Node& repr) {
+
+ g_return_if_fail (repr.type() == Inkscape::XML::NodeType::ELEMENT_NODE);
+
+ sp_attribute_sort_style(repr);
+
+ // Sort attributes:
+
+ // It doesn't seem possible to sort a List directly so we dump the list into
+ // a std::list and sort that. Not very efficient. Sad.
+
+ std::vector<std::pair< Glib::ustring, Glib::ustring > > my_list;
+ for ( const auto & iter : repr.attributeList()) {
+
+ Glib::ustring attribute = g_quark_to_string(iter.key);
+ Glib::ustring value = (const char*)iter.value;
+
+ // C++11 my_list.emlace_back(attribute, value);
+ my_list.emplace_back(attribute,value);
+ }
+ std::sort(my_list.begin(), my_list.end(), cmp);
+ // Delete all attributes.
+ for (const auto& it : my_list) {
+ // Removing "inkscape:label" results in crash when Layers dialog is open.
+ if (it.first != "inkscape:label") {
+ repr.removeAttribute(it.first);
+ }
+ }
+ // Insert all attributes in proper order
+ for (const auto& it : my_list) {
+ if (it.first != "inkscape:label") {
+ repr.setAttribute( it.first, it.second);
+ }
+ }
+}
+
+
+/**
+ * Sort CSS style on an element.
+ */
+static void sp_attribute_sort_style(Node& repr) {
+
+ g_return_if_fail (repr.type() == Inkscape::XML::NodeType::ELEMENT_NODE);
+
+ // Find element's style
+ SPCSSAttr *css = sp_repr_css_attr( &repr, "style" );
+ sp_attribute_sort_style(repr, *css);
+
+ // Convert css node's properties data to string and set repr node's attribute "style" to that string.
+ // sp_repr_css_set( repr, css, "style"); // Don't use as it will cause loop.
+ Glib::ustring value;
+ sp_repr_css_write_string(css, value);
+ repr.setAttributeOrRemoveIfEmpty("style", value);
+
+ sp_repr_css_attr_unref( css );
+}
+
+
+/**
+ * Sort CSS style on an element.
+ */
+static void sp_attribute_sort_style(Node& repr, SPCSSAttr& css) {
+
+ // Loop over all properties in "style" node.
+ std::vector<std::pair< Glib::ustring, Glib::ustring > > my_list;
+ for ( const auto & iter : css.attributeList()) {
+
+ Glib::ustring property = g_quark_to_string(iter.key);
+ Glib::ustring value = (const char*)iter.value;
+
+ // C++11 my_list.emlace_back(property, value);
+ my_list.emplace_back(property,value);
+ }
+ std::sort(my_list.begin(), my_list.end(), cmp);
+ // Delete all attributes.
+ for (const auto& it : my_list) {
+ sp_repr_css_set_property( &css, it.first.c_str(), nullptr );
+ }
+ // Insert all attributes in proper order
+ for (const auto& it : my_list) {
+ sp_repr_css_set_property( &css, it.first.c_str(), it.second.c_str() );
+ }
+}
+
+/*
+ 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 :