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Annotation of win32/gnome/gdome2-x.x.x/libgdome/xpath/gdome-xpath-xpnsresolv.c, revision 1.1

1.1     ! paf         1: /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 2; tab-width: 2 -*- */
        !             2: /* gdome-xpath-xpnsresolv.c
        !             3:  *
        !             4:  * CopyRight (C) 2002 T.J. Mather <tjmather@tjmather.com>
        !             5:  *
        !             6:  * This library is free software; you can redistribute it and/or
        !             7:  * modify it under the terms of the GNU Lesser General Public
        !             8:  * License as published by the Free Software Foundation; either
        !             9:  * version 2.1 of the License, or (at your option) any later version.
        !            10:  * 
        !            11:  * This library is distributed in the hope that it will be useful,
        !            12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            14:  * Lesser General Public License for more details.
        !            15:  * 
        !            16:  * You should have received a copy of the GNU Lesser General Public
        !            17:  * License along with this library; if not, write to the Free Software
        !            18:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            19:  */
        !            20: 
        !            21: #ifdef HAVE_CONFIG_H
        !            22: #  include <config.h>
        !            23: #endif
        !            24: #include <stdlib.h>
        !            25: #include <string.h>
        !            26: #include <libxml/tree.h>
        !            27: #include <libxml/xpath.h>
        !            28: #include "gdome.h"
        !            29: #include "gdome-xml-node.h"
        !            30: #include "gdome-xpath.h"
        !            31: #include "gdome-xpath-xpnsresolv.h"
        !            32: 
        !            33: const GdomeXPathNSResolverVtab gdome_xpath_xpnsresolv_vtab =
        !            34:   {
        !            35:    gdome_xpath_xpnsresolv_ref,
        !            36:    gdome_xpath_xpnsresolv_unref,
        !            37:     gdome_xpath_xpnsresolv_lookupNamespaceURI
        !            38:   };
        !            39: 
        !            40: GdomeXPathNSResolver *
        !            41: gdome_xpath_xpnsresolv_mkref( GdomeNode *nodeResolver )
        !            42: {
        !            43:  Gdome_xml_Node *priv = (Gdome_xml_Node *)nodeResolver;
        !            44:   Gdome_xpath_XPathNSResolver *resolv = g_new (Gdome_xpath_XPathNSResolver, 1);
        !            45:  GdomeException exc;
        !            46: 
        !            47:   resolv->vtab = &gdome_xpath_xpnsresolv_vtab;
        !            48:   resolv->n = priv->n;
        !            49:  resolv->refcnt = 1;
        !            50:  resolv->gnode = nodeResolver;
        !            51:  gdome_xml_n_ref ( nodeResolver, &exc);
        !            52:   return (GdomeXPathNSResolver *)resolv;
        !            53: }
        !            54: 
        !            55: /**
        !            56:  * gdome_xpath_xpnsresolv_ref:
        !            57:  * @self:  XPathNSResolver Object ref
        !            58:  * @exc:  Exception Object ref
        !            59:  *
        !            60:  * Increase the reference count of the XPathNSResolver structure.
        !            61:  */
        !            62: void
        !            63: gdome_xpath_xpnsresolv_ref (GdomeXPathNSResolver *self, GdomeException *exc)
        !            64: {
        !            65:  Gdome_xpath_XPathNSResolver *priv = (Gdome_xpath_XPathNSResolver *)self;
        !            66: 
        !            67:  g_return_if_fail (self != NULL);
        !            68:  g_return_if_fail (exc != NULL);
        !            69: 
        !            70:  priv->refcnt++;
        !            71: }
        !            72: 
        !            73: /**
        !            74:  * gdome_xpath_xpnsresolv_unref:
        !            75:  * @self:  XPathNSResolver Object ref
        !            76:  * @exc:  Exception Object ref
        !            77:  *
        !            78:  * Decrease the reference count of the XPathNSResolver. Free the structure
        !            79:  * if XPathNSResolver will have zero reference.
        !            80:  */
        !            81: void
        !            82: gdome_xpath_xpnsresolv_unref (GdomeXPathNSResolver *self, GdomeException *exc)
        !            83: {
        !            84:  Gdome_xpath_XPathNSResolver *priv = (Gdome_xpath_XPathNSResolver *)self;
        !            85: 
        !            86:  g_return_if_fail (self != NULL);
        !            87:  g_return_if_fail (exc != NULL);
        !            88: 
        !            89:  g_assert(priv->refcnt > 0);
        !            90:  priv->refcnt--;
        !            91: 
        !            92:  if (priv->refcnt == 0) {
        !            93:    gdome_xml_n_unref (priv->gnode, exc);
        !            94:    g_free (self);
        !            95:  }
        !            96: }
        !            97: 
        !            98: /**
        !            99:  * gdome_xpath_xpnsresolv_lookupNamespaceURI:
        !           100:  * @self:  GdomeXPathNSResolver Object ref
        !           101:  * @prefix:  The prefix of the namespace to look for
        !           102:  * @exc:  Exception Object ref
        !           103:  *
        !           104:  * Look up the namespace URI associated to the given namespace prefix. The
        !           105:  * XPath evaluator must never call this with a null or empty argument, because
        !           106:  * the result of doing this is undefined.
        !           107:  * Returns: namespace URI
        !           108:  */
        !           109: GdomeDOMString *
        !           110: gdome_xpath_xpnsresolv_lookupNamespaceURI( GdomeXPathNSResolver *self, GdomeDOMString *prefix, GdomeException *exc)
        !           111: {
        !           112:   xmlNsPtr ns = NULL;
        !           113:   Gdome_xpath_XPathNSResolver *priv = (Gdome_xpath_XPathNSResolver *)self;
        !           114: 
        !           115:   ns = xmlSearchNs(priv->n->doc, priv->n, prefix->str);
        !           116:   if (ns != NULL) {
        !           117:     return gdome_str_mkref_xml (ns->href);
        !           118:   } else {
        !           119:     return NULL;
        !           120:   }
        !           121: }