93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
/*
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* Copyright 2011 John-Mark Bell <jmb@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* libdom utilities (implementation).
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*/
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#ifndef NETSURF_UTILS_LIBDOM_H_
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#define NETSURF_UTILS_LIBDOM_H_
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#include <stdbool.h>
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#include <stdio.h>
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#include <dom/dom.h>
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#include <dom/bindings/hubbub/parser.h>
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#include <dom/bindings/hubbub/errors.h>
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/**
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* depth-first walk the dom calling callback for each element
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*
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* \param root the dom node to use as the root of the tree walk
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* \param callback The function called for each element
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* \param ctx The context passed to the callback.
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* \return true if all nodes were examined, false if the callback terminated
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* the walk early.
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*/
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bool libdom_treewalk(dom_node *root,
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bool (*callback)(dom_node *node, dom_string *name, void *ctx),
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void *ctx);
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/**
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* Search the descendants of a node for an element.
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*
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* \param node dom_node to search children of, or NULL
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* \param element_name name of element to find
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* \return first child of node which is an element and matches name, or
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* NULL if not found or parameter node is NULL
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*/
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dom_node *libdom_find_element(dom_node *node, lwc_string *element_name);
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/**
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* Search children of a node for first named element
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* \param parent dom_node to search children of, or NULL
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* \param element_name name of element to find
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* \return first child of node which is an element and matches name, or
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* NULL if not found or parameter node is NULL
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*/
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dom_node *libdom_find_first_element(dom_node *parent, lwc_string *element_name);
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typedef nserror (*libdom_iterate_cb)(dom_node *node, void *ctx);
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nserror libdom_iterate_child_elements(dom_node *parent,
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libdom_iterate_cb cb, void *ctx);
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nserror libdom_parse_file(const char *filename, const char *encoding,
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dom_document **doc);
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/**
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* Convert libdom hubbub binding errors to nserrors.
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*
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* \param error The hubbub binding error to convert
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* \return The appropriate nserror
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*/
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nserror libdom_hubbub_error_to_nserror(dom_hubbub_error error);
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/**
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* Walk though a DOM (sub)tree, in depth first order, printing DOM structure.
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*
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* \param node The root node to start from.
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* \param f The file to write output into.
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* \param depth The depth of 'node' in the (sub)tree.
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*/
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nserror libdom_dump_structure(dom_node *node, FILE *f, int depth);
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#endif
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