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139 lines
3.1 KiB
C
139 lines
3.1 KiB
C
/*
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* "$Id: mxml-search.c,v 1.2 2003/06/03 20:40:01 mike Exp $"
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*
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* Search/navigation functions for mini-XML, a small XML-like file
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* parsing library.
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*
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* Copyright 2003 by Michael Sweet.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2, or (at your option) any later version.
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*
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* This program 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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* Contents:
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*
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* mxmlFindElement() - Find the named element.
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* mxmlWalkNext() - Walk to the next logical node in the tree.
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* mxmlWalkPrev() - Walk to the previous logical node in the tree.
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* mxml_walk_next() - Walk to the next logical node in the tree.
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*/
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/*
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* Include necessary headers...
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*/
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#include "mxml.h"
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/*
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* Local functions...
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*/
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mxml_node_t *mxml_walk_next(mxml_node_t *node, mxml_node_t *top,
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int descend);
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/*
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* 'mxmlFindElement()' - Find the named element.
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*/
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mxml_node_t * /* O - Element node or NULL */
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mxmlFindElement(mxml_node_t *node, /* I - Current node */
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mxml_node_t *top, /* I - Top node */
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const char *name) /* I - Element name */
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{
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/*
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* Start with the next node...
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*/
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node = mxmlWalkNext(node, top);
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/*
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* Loop until we find a matching element...
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*/
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while (node != NULL)
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{
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/*
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* See if this node matches...
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*/
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if (node->type == MXML_ELEMENT &&
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node->value.element.name &&
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!strcmp(node->value.element.name, name))
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return (node);
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/*
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* Nope, move on to the next...
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*/
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node = mxmlWalkNext(node, top);
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}
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return (NULL);
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}
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/*
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* 'mxmlWalkNext()' - Walk to the next logical node in the tree.
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*/
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mxml_node_t * /* O - Next node or NULL */
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mxmlWalkNext(mxml_node_t *node, /* I - Current node */
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mxml_node_t *top) /* I - Top node */
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{
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return (mxml_walk_next(node, top, 1));
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}
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/*
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* 'mxmlWalkPrev()' - Walk to the previous logical node in the tree.
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*/
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mxml_node_t * /* O - Previous node or NULL */
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mxmlWalkPrev(mxml_node_t *node, /* I - Current node */
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mxml_node_t *top) /* I - Top node */
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{
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if (!node)
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return (NULL);
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else if (node->prev)
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return (node->prev);
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else if (node->parent != top)
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return (node->parent);
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else
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return (NULL);
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}
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/*
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* 'mxml_walk_next()' - Walk to the next logical node in the tree.
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*/
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mxml_node_t * /* O - Next node or NULL */
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mxml_walk_next(mxml_node_t *node, /* I - Current node */
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mxml_node_t *top, /* I - Top node */
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int descend) /* I - 1 = descend, 0 = don't */
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{
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if (!node)
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return (NULL);
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else if (node->child && descend)
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return (node->child);
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else if (node->next)
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return (node->next);
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else if (node->parent != top)
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return (mxml_walk_next(node->parent, top, 0));
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else
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return (NULL);
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}
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/*
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* End of "$Id: mxml-search.c,v 1.2 2003/06/03 20:40:01 mike Exp $".
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*/
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