types.c

libxml,在UNIX/LINUX下非常重要的一个库,为XML相关应用提供方便.目前上载的是最新版本,若要取得最新版本,请参考里面的readme.

	}
        case XPATH_NODESET:
            if ((obj->nodesetval == NULL)
                || (obj->nodesetval->nodeNr == 0)) {
                ret = PyList_New(0);
	    } else {
                int i;
                xmlNodePtr node;

                ret = PyList_New(obj->nodesetval->nodeNr);
                for (i = 0; i < obj->nodesetval->nodeNr; i++) {
                    node = obj->nodesetval->nodeTab[i];
                    /* TODO: try to cast directly to the proper node type */
                    PyList_SetItem(ret, i, libxml_xmlNodePtrWrap(node));
                }
            }
            break;
        case XPATH_BOOLEAN:
            ret = PyInt_FromLong((long) obj->boolval);
            break;
        case XPATH_NUMBER:
            ret = PyFloat_FromDouble(obj->floatval);
            break;
        case XPATH_STRING:
            ret = PyString_FromString((char *) obj->stringval);
            break;
        case XPATH_POINT:
        case XPATH_RANGE:
        case XPATH_LOCATIONSET:
        default:
            printf("Unable to convert XPath object type %d\n", obj->type);
            Py_INCREF(Py_None);
            ret = Py_None;
    }
    xmlXPathFreeObject(obj);
    return (ret);
}

xmlXPathObjectPtr
libxml_xmlXPathObjectPtrConvert(PyObject * obj)
{
    xmlXPathObjectPtr ret = NULL;

#ifdef DEBUG
    printf("libxml_xmlXPathObjectPtrConvert: obj = %p\n", obj);
#endif
    if (obj == NULL) {
        return (NULL);
    }
    if PyFloat_Check
        (obj) {
        ret = xmlXPathNewFloat((double) PyFloat_AS_DOUBLE(obj));
    } else if PyString_Check
        (obj) {
        xmlChar *str;

        str = xmlStrndup((const xmlChar *) PyString_AS_STRING(obj),
                         PyString_GET_SIZE(obj));
        ret = xmlXPathWrapString(str);
    } else if PyList_Check
        (obj) {
        int i;
        PyObject *node;
        xmlNodePtr cur;
        xmlNodeSetPtr set;

        set = xmlXPathNodeSetCreate(NULL);

        for (i = 0; i < PyList_Size(obj); i++) {
            node = PyList_GetItem(obj, i);
            if ((node == NULL) || (node->ob_type == NULL))
                continue;

            cur = NULL;
            if (PyCObject_Check(node)) {
                printf("Got a CObject\n");
                cur = PyxmlNode_Get(node);
            } else if (PyInstance_Check(node)) {
                PyInstanceObject *inst = (PyInstanceObject *) node;
                PyObject *name = inst->in_class->cl_name;

                if PyString_Check
                    (name) {
                    char *type = PyString_AS_STRING(name);
                    PyObject *wrapper;

                    if (!strcmp(type, "xmlNode")) {
                        wrapper =
                            PyObject_GetAttrString(node, (char *) "_o");
                        if (wrapper != NULL) {
                            cur = PyxmlNode_Get(wrapper);
                        }
                    }
                    }
            } else {
                printf("Unknown object in Python return list\n");
            }
            if (cur != NULL) {
                xmlXPathNodeSetAdd(set, cur);
            }
        }
        ret = xmlXPathWrapNodeSet(set);
    } else {
        printf("Unable to convert Python Object to XPath");
    }
    Py_DECREF(obj);
    return (ret);
}

PyObject *
libxml_xmlValidCtxtPtrWrap(xmlValidCtxtPtr valid)
{
	PyObject *ret;
	
#ifdef DEBUG
	printf("libxml_xmlValidCtxtPtrWrap: valid = %p\n", valid);
#endif
	if (valid == NULL) {
		Py_INCREF(Py_None);
		return (Py_None);
	}

	ret = 
		PyCObject_FromVoidPtrAndDesc((void *) valid,
									 (char *) "xmlValidCtxtPtr", NULL);

	return (ret);
}

PyObject *
libxml_xmlCatalogPtrWrap(xmlCatalogPtr catal)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlNodePtrWrap: catal = %p\n", catal);
#endif
    if (catal == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) catal,
                                     (char *) "xmlCatalogPtr", NULL);
    return (ret);
}

PyObject *
libxml_xmlOutputBufferPtrWrap(xmlOutputBufferPtr buffer)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlOutputBufferPtrWrap: buffer = %p\n", buffer);
#endif
    if (buffer == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) buffer,
                                     (char *) "xmlOutputBufferPtr", NULL);
    return (ret);
}

PyObject *
libxml_xmlParserInputBufferPtrWrap(xmlParserInputBufferPtr buffer)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlParserInputBufferPtrWrap: buffer = %p\n", buffer);
#endif
    if (buffer == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) buffer,
                                     (char *) "xmlParserInputBufferPtr", NULL);
    return (ret);
}

#ifdef LIBXML_REGEXP_ENABLED
PyObject *
libxml_xmlRegexpPtrWrap(xmlRegexpPtr regexp)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlRegexpPtrWrap: regexp = %p\n", regexp);
#endif
    if (regexp == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) regexp,
                                     (char *) "xmlRegexpPtr", NULL);
    return (ret);
}
#endif /* LIBXML_REGEXP_ENABLED */

PyObject *
libxml_xmlTextReaderPtrWrap(xmlTextReaderPtr reader)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlTextReaderPtrWrap: reader = %p\n", reader);
#endif
    if (reader == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) reader,
                                     (char *) "xmlTextReaderPtr", NULL);
    return (ret);
}

PyObject *
libxml_xmlTextReaderLocatorPtrWrap(xmlTextReaderLocatorPtr locator)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlTextReaderLocatorPtrWrap: locator = %p\n", locator);
#endif
    if (locator == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) locator,
                                     (char *) "xmlTextReaderLocatorPtr", NULL);
    return (ret);
}

#ifdef LIBXML_SCHEMAS_ENABLED
PyObject *
libxml_xmlRelaxNGPtrWrap(xmlRelaxNGPtr ctxt)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlRelaxNGPtrWrap: ctxt = %p\n", ctxt);
#endif
    if (ctxt == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) ctxt,
                                     (char *) "xmlRelaxNGPtr", NULL);
    return (ret);
}

PyObject *
libxml_xmlRelaxNGParserCtxtPtrWrap(xmlRelaxNGParserCtxtPtr ctxt)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlRelaxNGParserCtxtPtrWrap: ctxt = %p\n", ctxt);
#endif
    if (ctxt == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) ctxt,
                                     (char *) "xmlRelaxNGParserCtxtPtr", NULL);
    return (ret);
}
PyObject *
libxml_xmlRelaxNGValidCtxtPtrWrap(xmlRelaxNGValidCtxtPtr valid)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlRelaxNGValidCtxtPtrWrap: valid = %p\n", valid);
#endif
    if (valid == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) valid,
                                     (char *) "xmlRelaxNGValidCtxtPtr", NULL);
    return (ret);
}

PyObject *
libxml_xmlSchemaPtrWrap(xmlSchemaPtr ctxt)
{
	PyObject *ret;

#ifdef DEBUG
	printf("libxml_xmlSchemaPtrWrap: ctxt = %p\n", ctxt);
#endif
	if (ctxt == NULL) {
		Py_INCREF(Py_None);
		return (Py_None);
	}
	ret =
		PyCObject_FromVoidPtrAndDesc((void *) ctxt,
									 (char *) "xmlSchemaPtr", NULL);
	return (ret);
}

PyObject *
libxml_xmlSchemaParserCtxtPtrWrap(xmlSchemaParserCtxtPtr ctxt)
{
	PyObject *ret;

#ifdef DEBUG
	printf("libxml_xmlSchemaParserCtxtPtrWrap: ctxt = %p\n", ctxt);
#endif
	if (ctxt == NULL) {
		Py_INCREF(Py_None);
		return (Py_None);
	}
	ret = 
		PyCObject_FromVoidPtrAndDesc((void *) ctxt,
									 (char *) "xmlSchemaParserCtxtPtr", NULL);

	return (ret);
}

PyObject *
libxml_xmlSchemaValidCtxtPtrWrap(xmlSchemaValidCtxtPtr valid)
{
	PyObject *ret;
	
#ifdef DEBUG
	printf("libxml_xmlSchemaValidCtxtPtrWrap: valid = %p\n", valid);
#endif
	if (valid == NULL) {
		Py_INCREF(Py_None);
		return (Py_None);
	}

	ret = 
		PyCObject_FromVoidPtrAndDesc((void *) valid,
									 (char *) "xmlSchemaValidCtxtPtr", NULL);

	return (ret);
}
#endif /* LIBXML_SCHEMAS_ENABLED */

PyObject *
libxml_xmlErrorPtrWrap(xmlErrorPtr error)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlErrorPtrWrap: error = %p\n", error);
#endif
    if (error == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) error,
                                     (char *) "xmlErrorPtr", NULL);
    return (ret);
}