gomp-20050608-branch/libjava/classpath/native/jni/xmlj/xmlj_node.c

   1 /* xmlj_node.c -
   2    Copyright (C) 2004 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 #include "xmlj_error.h"
  39 #include "xmlj_node.h"
  40 #include "xmlj_util.h"
  41 #include <libxml/xmlstring.h>
  42
  43 /*
  44  * Returns the node ID for the given GnomeNode object.
  45  */
  46 xmlNodePtr
  47 xmljGetNodeID (JNIEnv * env, jobject self)
  48 {
  49   jclass cls;
  50   jfieldID field;
  51   jobject id;
  52   xmlNodePtr node;
  53
  54   if (self == NULL)
  55     {
  56       xmljThrowDOMException (env, 8, NULL);     /* NOT_FOUND_ERR */
  57       return NULL;
  58     }
  59   cls = (*env)->GetObjectClass (env, self);
  60   if (cls == NULL)
  61     {
  62       return NULL;
  63     }
  64   field = (*env)->GetFieldID (env, cls, "id", "Ljava/lang/Object;");
  65   if (field == NULL)
  66     {
  67       return NULL;
  68     }
  69   id = (*env)->GetObjectField (env, self, field);
  70   node = (xmlNodePtr) xmljAsPointer (env, id);
  71   if (node == NULL)
  72     {
  73       xmljThrowDOMException (env, 8, NULL);     /* NOT_FOUND_ERR */
  74     }
  75   return node;
  76 }
  77
  78 /*
  79  * Returns the Java node instanced corresponding to the specified node ID.
  80  */
  81 jobject
  82 xmljGetNodeInstance (JNIEnv * env, xmlNodePtr node)
  83 {
  84   jclass cls;
  85   jmethodID method;
  86   xmlElementType type;
  87
  88   if (node == NULL)
  89     return NULL;
  90
  91   /* Invoke the GnomeNode.newInstance class method */
  92   cls = (*env)->FindClass (env, "gnu/xml/libxmlj/dom/GnomeNode");
  93   if (cls == NULL)
  94     {
  95       return NULL;
  96     }
  97   method = (*env)->GetStaticMethodID (env, cls, "newInstance",
  98                                       "(Ljava/lang/Object;Ljava/lang/Object;I)Lgnu/xml/libxmlj/dom/GnomeNode;");
  99
 100   if (method == NULL)
 101     {
 102       return NULL;
 103     }
 104   type = node->type;
 105   switch (type)
 106     {
 107     case XML_DTD_NODE:
 108       type = XML_DOCUMENT_TYPE_NODE;
 109       break;
 110     case XML_ATTRIBUTE_DECL:
 111       type = XML_ATTRIBUTE_NODE;
 112       break;
 113     case XML_ENTITY_DECL:
 114       type = XML_ENTITY_NODE;
 115       break;
 116     default:
 117       break;
 118     }
 119   return (*env)->CallStaticObjectMethod (env, cls, method,
 120                                          xmljAsField (env, node->doc),
 121                                          xmljAsField (env, node),
 122                                          type);
 123 }
 124
 125 void
 126 xmljFreeDoc (JNIEnv * env, xmlDocPtr doc)
 127 {
 128   jclass cls;
 129   jmethodID method;
 130
 131   /* Invoke the GnomeNode.freeDocument class method */
 132   cls = (*env)->FindClass (env, "gnu/xml/libxmlj/dom/GnomeNode");
 133   if (cls == NULL)
 134     {
 135       return;
 136     }
 137   method = (*env)->GetStaticMethodID (env, cls, "freeDocument",
 138                                       "(Ljava/lang/Object;)V");
 139   if (method == NULL)
 140     {
 141       return;
 142     }
 143   (*env)->CallStaticVoidMethod (env, cls, method, xmljAsField (env, doc));
 144 }
 145
 146 int
 147 xmljMatch (const xmlChar * name, xmlNodePtr node)
 148 {
 149   switch (node->type)
 150     {
 151     case XML_ELEMENT_NODE:
 152     case XML_ATTRIBUTE_NODE:
 153       return xmlStrcmp (node->name, name);
 154     default:
 155       return 1;
 156     }
 157 }
 158
 159 int
 160 xmljMatchNS (const xmlChar * uri, const xmlChar * localName, xmlNodePtr node)
 161 {
 162   xmlNsPtr ns;
 163   const xmlChar *nodeLocalName;
 164   int *len;
 165   int ret;
 166
 167   switch (node->type)
 168     {
 169     case XML_ELEMENT_NODE:
 170     case XML_ATTRIBUTE_NODE:
 171       len = (int *) malloc (sizeof (int));
 172       if (xmlSplitQName3 (node->name, len) != NULL)
 173         {
 174           nodeLocalName = node->name + (*len);
 175         }
 176       else
 177         {
 178           nodeLocalName = node->name;
 179         }
 180       free (len);
 181       ns = node->ns;
 182       if (ns == NULL || ns->href == NULL)
 183         {
 184           if (uri != NULL)
 185             {
 186               return 0;
 187             }
 188           ret = xmlStrcmp (localName, nodeLocalName);
 189         }
 190       else
 191         {
 192           if (uri == NULL)
 193             {
 194               return 0;
 195             }
 196           ret = (xmlStrcmp (localName, nodeLocalName) &&
 197                  xmlStrcmp (uri, ns->href));
 198         }
 199       return ret;
 200     default:
 201       return 1;
 202     }
 203 }