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.

/*
 * types.c: converter functions between the internal representation
 *          and the Python objects
 *
 * See Copyright for the status of this software.
 *
 * [e-mail]
 */
#include "libxml_wrap.h"

PyObject *
libxml_intWrap(int val)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_intWrap: val = %d\n", val);
#endif
    ret = PyInt_FromLong((long) val);
    return (ret);
}

PyObject *
libxml_longWrap(long val)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_longWrap: val = %ld\n", val);
#endif
    ret = PyInt_FromLong(val);
    return (ret);
}

PyObject *
libxml_doubleWrap(double val)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_doubleWrap: val = %f\n", val);
#endif
    ret = PyFloat_FromDouble((double) val);
    return (ret);
}

PyObject *
libxml_charPtrWrap(char *str)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlcharPtrWrap: str = %s\n", str);
#endif
    if (str == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    /* TODO: look at deallocation */
    ret = PyString_FromString(str);
    xmlFree(str);
    return (ret);
}

PyObject *
libxml_charPtrConstWrap(const char *str)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlcharPtrWrap: str = %s\n", str);
#endif
    if (str == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    /* TODO: look at deallocation */
    ret = PyString_FromString(str);
    return (ret);
}

PyObject *
libxml_xmlCharPtrWrap(xmlChar * str)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlCharPtrWrap: str = %s\n", str);
#endif
    if (str == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    /* TODO: look at deallocation */
    ret = PyString_FromString((char *) str);
    xmlFree(str);
    return (ret);
}

PyObject *
libxml_xmlCharPtrConstWrap(const xmlChar * str)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlCharPtrWrap: str = %s\n", str);
#endif
    if (str == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    /* TODO: look at deallocation */
    ret = PyString_FromString((char *) str);
    return (ret);
}

PyObject *
libxml_constcharPtrWrap(const char *str)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlcharPtrWrap: str = %s\n", str);
#endif
    if (str == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    /* TODO: look at deallocation */
    ret = PyString_FromString(str);
    return (ret);
}

PyObject *
libxml_constxmlCharPtrWrap(const xmlChar * str)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlCharPtrWrap: str = %s\n", str);
#endif
    if (str == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    /* TODO: look at deallocation */
    ret = PyString_FromString((char *) str);
    return (ret);
}

PyObject *
libxml_xmlDocPtrWrap(xmlDocPtr doc)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlDocPtrWrap: doc = %p\n", doc);
#endif
    if (doc == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    /* TODO: look at deallocation */
    ret =
        PyCObject_FromVoidPtrAndDesc((void *) doc, (char *) "xmlDocPtr",
                                     NULL);
    return (ret);
}

PyObject *
libxml_xmlNodePtrWrap(xmlNodePtr node)
{
    PyObject *ret;

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

PyObject *
libxml_xmlURIPtrWrap(xmlURIPtr uri)
{
    PyObject *ret;

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

PyObject *
libxml_xmlNsPtrWrap(xmlNsPtr ns)
{
    PyObject *ret;

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

PyObject *
libxml_xmlAttrPtrWrap(xmlAttrPtr attr)
{
    PyObject *ret;

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

PyObject *
libxml_xmlAttributePtrWrap(xmlAttributePtr attr)
{
    PyObject *ret;

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

PyObject *
libxml_xmlElementPtrWrap(xmlElementPtr elem)
{
    PyObject *ret;

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

PyObject *
libxml_xmlXPathContextPtrWrap(xmlXPathContextPtr ctxt)
{
    PyObject *ret;

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

PyObject *
libxml_xmlXPathParserContextPtrWrap(xmlXPathParserContextPtr ctxt)
{
    PyObject *ret;

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

PyObject *
libxml_xmlParserCtxtPtrWrap(xmlParserCtxtPtr ctxt)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlParserCtxtPtrWrap: ctxt = %p\n", ctxt);
#endif
    if (ctxt == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }

    ret =
        PyCObject_FromVoidPtrAndDesc((void *) ctxt,
                                     (char *) "xmlParserCtxtPtr", NULL);
    return (ret);
}

PyObject *
libxml_xmlXPathObjectPtrWrap(xmlXPathObjectPtr obj)
{
    PyObject *ret;

#ifdef DEBUG
    printf("libxml_xmlXPathObjectPtrWrap: ctxt = %p\n", obj);
#endif
    if (obj == NULL) {
        Py_INCREF(Py_None);
        return (Py_None);
    }
    switch (obj->type) {
        case XPATH_XSLT_TREE: {
            if ((obj->nodesetval == NULL) ||
		(obj->nodesetval->nodeNr == 0) ||
		(obj->nodesetval->nodeTab == NULL)) {
                ret = PyList_New(0);
	    } else {
		int i, len = 0;
		xmlNodePtr node;

		node = obj->nodesetval->nodeTab[0]->children;
		while (node != NULL) {
		    len++;
		    node = node->next;
		}
		ret = PyList_New(len);
		node = obj->nodesetval->nodeTab[0]->children;
		for (i = 0;i < len;i++) {
                    PyList_SetItem(ret, i, libxml_xmlNodePtrWrap(node));
		    node = node->next;
		}
	    }
	    /*
	     * Return now, do not free the object passed down
	     */
	    return (ret);