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| -rw-r--r-- | src/xml/repr.h | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/src/xml/repr.h b/src/xml/repr.h new file mode 100644 index 0000000..4d80f39 --- /dev/null +++ b/src/xml/repr.h @@ -0,0 +1,234 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** @file + * @brief C facade to Inkscape::XML::Node + */ +/* Authors: + * Lauris Kaplinski <lauris@kaplinski.com> + * Jon A. Cruz <jon@joncruz.org> + * + * Copyright (C) 1999-2002 authors + * Copyright (C) 2000-2002 Ximian, Inc. + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#ifndef SEEN_SP_REPR_H +#define SEEN_SP_REPR_H + +#include <vector> +#include <glibmm/quark.h> + +#include "xml/node.h" +#include "xml/document.h" + +#define SP_SODIPODI_NS_URI "http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" +#define SP_BROKEN_SODIPODI_NS_URI "http://inkscape.sourceforge.net/DTD/sodipodi-0.dtd" +#define SP_INKSCAPE_NS_URI "http://www.inkscape.org/namespaces/inkscape" +#define SP_XLINK_NS_URI "http://www.w3.org/1999/xlink" +#define SP_SVG_NS_URI "http://www.w3.org/2000/svg" +#define SP_RDF_NS_URI "http://www.w3.org/1999/02/22-rdf-syntax-ns#" +#define SP_CC_NS_URI "http://creativecommons.org/ns#" +#define SP_OLD_CC_NS_URI "http://web.resource.org/cc/" +#define SP_DC_NS_URI "http://purl.org/dc/elements/1.1/" + +class SPCSSAttr; +class SVGLength; + +namespace Inkscape { +namespace IO { +class Writer; +} // namespace IO +} // namespace Inkscape + +namespace Geom { +class Point; +} + +/* SPXMLNs */ +char const *sp_xml_ns_uri_prefix(char const *uri, char const *suggested); +char const *sp_xml_ns_prefix_uri(char const *prefix); + +Inkscape::XML::Document *sp_repr_document_new(char const *rootname); + +/* IO */ + +Inkscape::XML::Document *sp_repr_read_file(char const *filename, char const *default_ns); +Inkscape::XML::Document *sp_repr_read_mem(char const *buffer, int length, char const *default_ns); +void sp_repr_write_stream(Inkscape::XML::Node *repr, Inkscape::IO::Writer &out, + int indent_level, bool add_whitespace, Glib::QueryQuark elide_prefix, + int inlineattrs, int indent, + char const *old_href_base = nullptr, + char const *new_href_base = nullptr); +Inkscape::XML::Document *sp_repr_read_buf (const Glib::ustring &buf, const char *default_ns); +Glib::ustring sp_repr_save_buf(Inkscape::XML::Document *doc); + +// TODO convert to std::string +void sp_repr_save_stream(Inkscape::XML::Document *doc, FILE *to_file, + char const *default_ns = nullptr, bool compress = false, + char const *old_href_base = nullptr, + char const *new_href_base = nullptr); + +bool sp_repr_save_file(Inkscape::XML::Document *doc, char const *filename, char const *default_ns=nullptr); +bool sp_repr_save_rebased_file(Inkscape::XML::Document *doc, char const *filename_utf8, + char const *default_ns, + char const *old_base, char const *new_base_filename); + + +/* CSS stuff */ + +SPCSSAttr *sp_repr_css_attr_new(); +void sp_repr_css_attr_unref(SPCSSAttr *css); +SPCSSAttr *sp_repr_css_attr(Inkscape::XML::Node const *repr, char const *attr); +SPCSSAttr *sp_repr_css_attr_inherited(Inkscape::XML::Node const *repr, char const *attr); +SPCSSAttr *sp_repr_css_attr_unset_all(SPCSSAttr *css); + +char const *sp_repr_css_property(SPCSSAttr *css, char const *name, char const *defval); +Glib::ustring sp_repr_css_property(SPCSSAttr *css, Glib::ustring const &name, Glib::ustring const &defval); +void sp_repr_css_set_property(SPCSSAttr *css, char const *name, char const *value); +void sp_repr_css_unset_property(SPCSSAttr *css, char const *name); +bool sp_repr_css_property_is_unset(SPCSSAttr *css, char const *name); +double sp_repr_css_double_property(SPCSSAttr *css, char const *name, double defval); +void sp_repr_css_set_property_double(SPCSSAttr *css, char const *name, double value); + +void sp_repr_css_write_string(SPCSSAttr *css, Glib::ustring &str); +void sp_repr_css_set(Inkscape::XML::Node *repr, SPCSSAttr *css, char const *key); +void sp_repr_css_merge(SPCSSAttr *dst, SPCSSAttr *src); +void sp_repr_css_attr_add_from_string(SPCSSAttr *css, const char *data); +void sp_repr_css_change(Inkscape::XML::Node *repr, SPCSSAttr *css, char const *key); +void sp_repr_css_change_recursive(Inkscape::XML::Node *repr, SPCSSAttr *css, char const *key); +void sp_repr_css_print(SPCSSAttr *css); + +/* Utility finctions */ +/// Remove \a repr from children of its parent node. +inline void sp_repr_unparent(Inkscape::XML::Node *repr) { + if (repr) { + Inkscape::XML::Node *parent=repr->parent(); + if (parent) { + parent->removeChild(repr); + } + } +} + +bool sp_repr_is_meta_element(const Inkscape::XML::Node *node); + +//c++-style comparison : returns (bool)(a<b) +int sp_repr_compare_position(Inkscape::XML::Node const *first, Inkscape::XML::Node const *second); +bool sp_repr_compare_position_bool(Inkscape::XML::Node const *first, Inkscape::XML::Node const *second); + +// Searching +/** + * @brief Find an element node with the given name. + * + * This function searches the descendants of the specified node depth-first for + * the first XML node with the specified name. + * + * @param repr The node to start from + * @param name The name of the element node to find + * @param maxdepth Maximum search depth, or -1 for an unlimited depth + * @return A pointer to the matching Inkscape::XML::Node + * @relatesalso Inkscape::XML::Node + */ +Inkscape::XML::Node *sp_repr_lookup_name(Inkscape::XML::Node *repr, + char const *name, + int maxdepth = -1); + +Inkscape::XML::Node const *sp_repr_lookup_name(Inkscape::XML::Node const *repr, + char const *name, + int maxdepth = -1); + +std::vector<Inkscape::XML::Node const *> sp_repr_lookup_name_many(Inkscape::XML::Node const *repr, + char const *name, + int maxdepth = -1); + +// Find an element node using an unique attribute. +Inkscape::XML::Node *sp_repr_lookup_child(Inkscape::XML::Node *repr, + char const *key, + char const *value); + +// Find an element node using an unique attribute recursively. +Inkscape::XML::Node *sp_repr_lookup_descendant(Inkscape::XML::Node *repr, + char const *key, + char const *value); + +Inkscape::XML::Node const *sp_repr_lookup_descendant(Inkscape::XML::Node const *repr, + char const *key, + char const *value); + +// Find element nodes using a property value. +std::vector<Inkscape::XML::Node *> sp_repr_lookup_property_many(Inkscape::XML::Node *repr, + Glib::ustring const &property, + Glib::ustring const &value, + int maxdepth = -1); + +inline Inkscape::XML::Node *sp_repr_document_first_child(Inkscape::XML::Document const *doc) { + return const_cast<Inkscape::XML::Node *>(doc->firstChild()); +} + +inline bool sp_repr_is_def(Inkscape::XML::Node const *node) { + return node->parent() != nullptr && + node->parent()->name() != nullptr && + strcmp("svg:defs", node->parent()->name()) == 0; +} + +inline bool sp_repr_is_layer(Inkscape::XML::Node const *node) { + return node->attribute("inkscape:groupmode") != nullptr && + strcmp("layer", node->attribute("inkscape:groupmode")) == 0; +} + +/** + * @brief Visit all descendants recursively. + * + * Traverse all descendants of node and call visitor on it. + * Stop descending when visitor returns false + * + * @param node The root node to start visiting + * @param visitor The visitor lambda (Node *) -> bool + * If visitor returns false child nodes of current node are not visited. + * @relatesalso Inkscape::XML::Node + */ +template <typename Visitor> +void sp_repr_visit_descendants(Inkscape::XML::Node *node, Visitor visitor) { + if (!visitor(node)) { + return; + } + for (Inkscape::XML::Node *child = node->firstChild(); + child != nullptr; + child = child->next()) { + sp_repr_visit_descendants(child, visitor); + } +} + +/** + * @brief Visit descendants of 2 nodes in parallel. + * The assumption is that one a and b trees are the same in terms of structure (like one is + * a duplicate of the other). + * + * @param a first node tree root + * @param b second node tree root + * @param visitor The visitor lambda (Node *, Node *) -> bool + * If visitor returns false child nodes are not visited. + * @relatesalso Inkscape::XML::Node + */ +template <typename Visitor> +void sp_repr_visit_descendants(Inkscape::XML::Node *a, Inkscape::XML::Node *b, Visitor visitor) { + if (!visitor(a, b)) { + return; + } + for (Inkscape::XML::Node *ac = a->firstChild(), *bc = b->firstChild(); + ac != nullptr && bc != nullptr; + ac = ac->next(), bc = bc->next()) { + sp_repr_visit_descendants(ac, bc, visitor); + } +} + +#endif // SEEN_SP_REPR_H +/* + 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:fileencoding=utf-8:textwidth=99 : |