xmlj_transform.c

gcc的组建

      
      xmlHashScan (stylesheet->cdataSection,
                   cdataSectionScanner, &info);
      
        {
          jstring result = (jstring)
            (*env)->CallObjectMethod (env,
                                      info.stringBuffer,
                                      toStringMethodID);
          
          jstring nameString =
            (*env)->NewStringUTF (env,
                                  "cdata-section-elements");
          
          jobject prevValue
            =
            (*env)->CallObjectMethod (env,
                                      outputProperties,
                                      setPropertyMethod,
                                      nameString, result);
          if (NULL != prevValue)
            {
              (*env)->DeleteLocalRef (env, prevValue);
            }
          (*env)->DeleteLocalRef (env, nameString);
        }
      
      (*env)->DeleteLocalRef (env, info.stringBuffer);
    }
}

/*
 * Returns the parameter array for the given GnomeTransformer.
 */
jobjectArray
xmljGetParameterArray (JNIEnv *env, jobject transformer)
{
  jclass cls;
  jmethodID method;

  cls = (*env)->GetObjectClass (env, transformer);
  if (cls == NULL)
    {
      return NULL;
    }
  method = (*env)->GetMethodID (env, cls, "getParameterArray",
                                "()[Ljava/lang/String;");
  if (method == NULL)
    {
      return NULL;
    }
  return (jobjectArray) (*env)->CallObjectMethod (env, transformer, method);
}

/* Convert parameter array to xmlChar ** */
const char **
xmljGetParameters (JNIEnv *env, jobjectArray pa)
{
  int i, len;
  const char **parameters;

  len = (*env)->GetArrayLength (env, pa);
  parameters = (const char **) malloc ((len + 2) * sizeof (const char *));
  if (parameters == NULL)
    {
      return NULL;
    }
  
  for (i = 0; i < len; i++)
    {
      jstring string = (jstring) (*env)->GetObjectArrayElement (env, pa, i);
      
      if (string != NULL)
        {
          parameters[i] = (*env)->GetStringUTFChars (env, string, NULL);
        }
      else
        {
          parameters[i] = NULL;
        }
    }
  
  parameters[len] = 0;
  parameters[len + 1] = 0;
  return parameters;
}
  
/* Release parameter strings */
void
xmljFreeParameters (JNIEnv *env, jobjectArray pa, const char **parameters)
{ 
  int i, len;
  
  len = (*env)->GetArrayLength (env, pa);
  for (i = 0; i < len; i++)
    {
      jstring string = (jstring) (*env)->GetObjectArrayElement (env, pa, i);
      if (string != NULL)
        {
          (*env)->ReleaseStringUTFChars (env, string, parameters[i]);
        }
    }
  
  free (parameters);
}

xmlDocPtr
xmljTransform (JNIEnv *env, jobject transformer, xmlDocPtr source)
{
  xsltStylesheetPtr stylesheet;
  xmlDocPtr result;
  jobjectArray pa;
  const char **parameters;

  stylesheet = xmljGetStylesheetID (env, transformer);
  pa = xmljGetParameterArray (env, transformer);
  parameters = xmljGetParameters (env, pa);
  if (parameters == NULL)
    {
      xmljThrowException (env, "javax/xml/transform/TransformerException",
                          "Couldn't allocate memory for parameters");
      return NULL;
    }
  result = xsltApplyStylesheet (stylesheet, source, parameters);
  xmljFreeParameters (env, pa, parameters);
  if (result == NULL)
    {
      xmljThrowException (env, "javax/xml/transform/TransformerException",
                          "XSLT transformation failed");
    }
  return result;
}

void
xmljTransformToSAX (JNIEnv *env, jobject transformer, xmlDocPtr source,
                    jobject callback)
{
  xsltStylesheetPtr stylesheet;
  int ret;
  jobjectArray pa;
  const char **parameters;
  xmlSAXHandlerPtr sax;

  stylesheet = xmljGetStylesheetID (env, transformer);
  pa = xmljGetParameterArray (env, transformer);
  parameters = xmljGetParameters (env, pa);
  if (parameters == NULL)
    {
      xmljThrowException (env, "javax/xml/transform/TransformerException",
                          "Couldn't allocate memory for parameters");
      return;
    }
  sax = NULL; /* TODO link up sax and callback */
  ret = xsltRunStylesheet (stylesheet, source, parameters, NULL, sax, NULL);
  xmljFreeParameters (env, pa, parameters);
  if (ret == -1)
    {
      xmljThrowException (env, "javax/xml/transform/TransformerException",
                          "XSLT transformation failed");
    }
}

xmlDocPtr
xmljDocLoader (const xmlChar *uri, xmlDictPtr dict, int options,
               void *ctxt, xsltLoadType type)
{
  JNIEnv *env;
  jclass xmljClass;
  jclass inputStreamClass;
  jmethodID getInputStream;
  jmethodID getDetectBuffer;
  jstring systemId;
  jobject inputStream;
  jbyteArray detectBuffer;

  fflush(stdout);
  env = xmljGetJNIEnv ();
  if (!env)
    {
      return NULL;
    }
  xmljClass = (*env)->FindClass (env, "gnu/xml/libxmlj/util/XMLJ");
  if (!xmljClass)
    {
      return NULL;
    }
  getInputStream =
    (*env)->GetStaticMethodID (env, xmljClass, "xmljGetInputStream",
                               "(Ljava/lang/String;Ljava/lang/String;)Lgnu/xml/libxmlj/util/NamedInputStream;");
  if (!getInputStream)
    {
      return NULL;
    }
  systemId = xmljNewString (env, uri);
  inputStream = (*env)->CallStaticObjectMethod (env, xmljClass, getInputStream,
                                                stylesheetURL, systemId);
  if (!inputStream)
    {
      return NULL;
    }
  inputStreamClass = (*env)->GetObjectClass (env, inputStream);
  if (!inputStreamClass)
    {
      return NULL;
    }
  getDetectBuffer = (*env)->GetMethodID (env, inputStreamClass,
                                         "getDetectBuffer", "()[B");
  if (!getDetectBuffer)
    {
      return NULL;
    }
  detectBuffer = (*env)->CallObjectMethod (env, inputStream, getDetectBuffer);
  if (!detectBuffer)
    {
      return NULL;
    }
  return xmljParseDocument (env, NULL, inputStream, detectBuffer,
                            NULL, systemId, stylesheetURL,
                            0, 0, 0, 0, 0, 0, 0, 0, 0, 2);
}

/* GnomeTransformer.newStylesheet */
JNIEXPORT jobject JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_newStylesheet (JNIEnv *env,
                                                               jobject self)
{
  xsltStylesheetPtr stylesheet;
  jobject ret;

  stylesheetURL = NULL;
  xsltSetLoaderFunc (xmljDocLoader);
  stylesheet = xsltNewStylesheet ();
  xmljSetOutputProperties (env, self, stylesheet);
  ret = xmljAsField (env, stylesheet);
  if (ret == NULL)
    {
      xmljThrowException (env,
                          "javax/xml/transform/TransformerConfigurationException",
                          "Can't create Java object for stylesheet");
    }
  return ret;
}

/* GnomeTransformer.newStylesheetFromStream */
JNIEXPORT jobject JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_newStylesheetFromStream
(JNIEnv *env, jobject self, jobject in, jbyteArray detectBuffer,
 jstring publicId, jstring systemId, jstring base,
 jboolean entityResolver, jboolean errorHandler)
{
  xmlDocPtr doc;
  xsltStylesheetPtr stylesheet;
  jobject ret;

  doc = xmljParseDocument (env, self, in, detectBuffer, publicId, systemId,
                           base, 0, 0, 0, 0, 0, 
                           entityResolver, errorHandler, 0, 0, 2);
  if (doc == NULL)
    {
      return NULL;
    }
  stylesheetURL = systemId;
  xsltSetLoaderFunc (xmljDocLoader);
  stylesheet = xsltParseStylesheetDoc (doc);
  if (stylesheet == NULL)
    {
      xmljThrowException (env,
                          "javax/xml/transform/TransformerConfigurationException",
                          "Error parsing XSLT stylesheet");
      return NULL;
    }
  xmljSetOutputProperties (env, self, stylesheet);
  ret =  xmljAsField (env, stylesheet);
  if (ret == NULL)
    {
      xmljThrowException (env,
                          "javax/xml/transform/TransformerConfigurationException",
                          "Can't create Java object for stylesheet");
    }
  return ret;
}

/* GnomeTransformer.newStylesheetFromDoc */
JNIEXPORT jobject JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_newStylesheetFromDoc
(JNIEnv *env, jobject self, jobject in)
{
  xmlDocPtr doc;
  xsltStylesheetPtr stylesheet;
  jobject ret;

  doc = (xmlDocPtr) xmljGetNodeID (env, in);
  if (doc == NULL)
    {
      return NULL;
    }
  stylesheetURL = xmljNewString (env, doc->URL);
  xsltSetLoaderFunc (xmljDocLoader);
  stylesheet = xsltParseStylesheetDoc (doc);
  if (stylesheet == NULL)
    {
      xmljThrowException (env,
                          "javax/xml/transform/TransformerConfigurationException",
                          "Error parsing XSLT stylesheet");
    }
  xmljSetOutputProperties (env, self, stylesheet);
  ret =  xmljAsField (env, stylesheet);
  if (ret == NULL)
    {
      xmljThrowException (env,
                          "javax/xml/transform/TransformerConfigurationException",
                          "Can't create Java object for stylesheet");
    }
  return ret;
}

/* GnomeTransformer.transformStreamToStream */
JNIEXPORT void JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_transformStreamToStream
(JNIEnv *env, jobject self, jobject in, jbyteArray detectBuffer,
 jstring publicId, jstring systemId, jstring base,
 jboolean entityResolver, jboolean errorHandler, jobject out)
{
  xmlDocPtr source;
  xmlDocPtr result;

  source = xmljParseDocument (env, self, in, detectBuffer, publicId, systemId,
                              base, 0, 0, 0, 0, 0, 
                              entityResolver, errorHandler, 0, 0, 2);
  result = xmljTransform (env, self, source);
  xmljSaveFileToJavaOutputStream (env, out, result,
                                  (const char*) result->encoding);
  xmlFreeDoc (result);
}

/* GnomeTransformer.transformStreamToDoc */
JNIEXPORT jobject JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_transformStreamToDoc
(JNIEnv *env, jobject self, jobject in, jbyteArray detectBuffer,
 jstring publicId, jstring systemId, jstring base,
 jboolean entityResolver, jboolean errorHandler)
{
  xmlDocPtr source;
  xmlDocPtr result;

  source = xmljParseDocument (env, self, in, detectBuffer, publicId, systemId,
                              base, 0, 0, 0, 0, 0, 
                              entityResolver, errorHandler, 0, 0, 2);
  result = xmljTransform (env, self, source);
  return xmljGetNodeInstance (env, (xmlNodePtr) result);
}

/* GnomeTransformer.transformStreamToSAX */
JNIEXPORT void JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_transformStreamToSAX
(JNIEnv *env, jobject self, jobject in, jbyteArray detectBuffer,
 jstring publicId, jstring systemId, jstring base,
 jboolean entityResolver, jboolean errorHandler, jobject callback)
{
  xmlDocPtr source;

  source = xmljParseDocument (env, self, in, detectBuffer, publicId, systemId,
                              base, 0, 0, 0, 0, 0, 
                              entityResolver, errorHandler, 0, 0, 2);
  xmljTransformToSAX (env, self, source, callback);
}

/* GnomeTransformer.transformDocToStream */
JNIEXPORT void JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_transformDocToStream
(JNIEnv *env, jobject self, jobject doc, jobject out)
{
  xmlDocPtr source;
  xmlDocPtr result;

  source = (xmlDocPtr) xmljGetNodeID (env, doc);
  result = xmljTransform (env, self, source);
  xmljSaveFileToJavaOutputStream (env, out, result,
                                  (const char*) result->encoding);
  xmlFreeDoc (result);
}

/* GnomeTransformer.transformDocToDoc */
JNIEXPORT jobject JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_transformDocToDoc
(JNIEnv *env, jobject self, jobject doc)
{
  xmlDocPtr source;
  xmlDocPtr result;

  source = (xmlDocPtr) xmljGetNodeID (env, doc);
  result = xmljTransform (env, self, source);
  return xmljGetNodeInstance (env, (xmlNodePtr) result);
}

/* GnomeTransformer.transformDocToSAX */
JNIEXPORT void JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_transformDocToSAX
(JNIEnv *env, jobject self, jobject doc, jobject callback)
{
  xmlDocPtr source;

  source = (xmlDocPtr) xmljGetNodeID (env, doc);
  xmljTransformToSAX (env, self, source, callback);
}

/* GnomeTransformer.free */
JNIEXPORT void JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformer_free (JNIEnv *env,
                                                      jobject self)
{
  xsltStylesheetPtr stylesheet;

  stylesheet = xmljGetStylesheetID (env, self);
  xsltFreeStylesheet (stylesheet);
}

/*
 * --------------------------------------------------------------------------
 * Native implementation for class
 * gnu.xml.libxmlj.transform.GnomeTransformerFactory follows.
 */

/* GnomeTransformerFactory.freeLibxsltGlobal */
JNIEXPORT void JNICALL
Java_gnu_xml_libxmlj_transform_GnomeTransformerFactory_freeLibxsltGlobal (
  JNIEnv *env __attribute__((__unused__)),
  jclass clazz __attribute__((__unused__)))
{
  xsltCleanupGlobals ();
  xmlCleanupParser ();
}