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#include "rpmsystem-py.h"
#include <rpm/rpmdb.h>
#include "rpmmi-py.h"
#include "header-py.h"
#include "debug.h"
/** \ingroup python
* \class Rpmmi
* \brief A python rpm.mi match iterator object represents the result of a
* database query.
*
* Instances of the rpm.mi object provide access to headers that match
* certain criteria. Typically, a primary index is accessed to find
* a set of headers that contain a key, and each header is returned
* serially.
*
* The rpm.mi class conains the following methods:
* - next() -> hdr Return the next header that matches.
*
* - pattern(tag,mire,pattern) Specify secondary match criteria.
*
* To obtain a rpm.mi object to query the database used by a transaction,
* the ts.match(tag,key,len) method is used.
*
* Here's an example that prints the name of all installed packages:
* \code
* import rpm
* ts = rpm.TransactionSet()
* for h in ts.dbMatch():
* print h['name']
* \endcode
*
* Here's a more typical example that uses the Name index to retrieve
* all installed kernel(s):
* \code
* import rpm
* ts = rpm.TransactionSet()
* mi = ts.dbMatch('name', "kernel")
* for h in mi:
* print "%s-%s-%s" % (h['name'], h['version'], h['release'])
* \endcode
*
* Finally, here's an example that retrieves all packages whose name
* matches the glob expression "XFree*":
* \code
* import rpm
* ts = rpm.TransactionSet()
* mi = ts.dbMatch()
* mi.pattern('name', rpm.RPMMIRE_GLOB, "XFree*")
* for h in mi:
* print "%s-%s-%s" % (h['name'], h['version'], h['release'])
* \endcode
*
*/
/** \ingroup python
* \name Class: Rpmmi
*/
struct rpmmiObject_s {
PyObject_HEAD
PyObject *md_dict; /*!< to look like PyModuleObject */
PyObject *ref; /* for db/ts refcounting */
rpmdbMatchIterator mi;
} ;
static PyObject *
rpmmi_iternext(rpmmiObject * s)
{
Header h;
if (s->mi == NULL || (h = rpmdbNextIterator(s->mi)) == NULL) {
s->mi = rpmdbFreeIterator(s->mi);
return NULL;
}
return hdr_Wrap(&hdr_Type, h);
}
static PyObject *
rpmmi_Instance(rpmmiObject * s)
{
int rc = 0;
if (s->mi != NULL)
rc = rpmdbGetIteratorOffset(s->mi);
return Py_BuildValue("i", rc);
}
static PyObject *
rpmmi_Count(rpmmiObject * s)
{
DEPRECATED_METHOD("use len(mi) instead");
return Py_BuildValue("i", PyMapping_Size((PyObject *)s));
}
static PyObject *
rpmmi_Pattern(rpmmiObject * s, PyObject * args, PyObject * kwds)
{
int type;
char * pattern;
rpmTag tag;
char * kwlist[] = {"tag", "type", "patern", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&is:Pattern", kwlist,
tagNumFromPyObject, &tag, &type, &pattern))
return NULL;
rpmdbSetIteratorRE(s->mi, tag, type, pattern);
Py_RETURN_NONE;
}
static struct PyMethodDef rpmmi_methods[] = {
{"instance", (PyCFunction) rpmmi_Instance, METH_NOARGS,
NULL },
{"count", (PyCFunction) rpmmi_Count, METH_NOARGS,
NULL },
{"pattern", (PyCFunction) rpmmi_Pattern, METH_VARARGS|METH_KEYWORDS,
"mi.pattern(TagN, mire_type, pattern)\n\
- Set a secondary match pattern on tags from retrieved header.\n" },
{NULL, NULL} /* sentinel */
};
static void rpmmi_dealloc(rpmmiObject * s)
{
s->mi = rpmdbFreeIterator(s->mi);
Py_DECREF(s->ref);
Py_TYPE(s)->tp_free((PyObject *)s);
}
static Py_ssize_t rpmmi_length(rpmmiObject * s)
{
return s->mi ? rpmdbGetIteratorCount(s->mi) : 0;
}
static int rpmmi_bool(rpmmiObject *s)
{
return (s->mi != NULL);
}
PyMappingMethods rpmmi_as_mapping = {
(lenfunc) rpmmi_length, /* mp_length */
0,
};
static PyNumberMethods rpmmi_as_number = {
0, /* nb_add */
0, /* nb_subtract */
0, /* nb_multiply */
0, /* nb_divide */
0, /* nb_remainder */
0, /* nb_divmod */
0, /* nb_power */
0, /* nb_negative */
0, /* nb_positive */
0, /* nb_absolute */
(inquiry)rpmmi_bool, /* nb_bool/nonzero */
};
static char rpmmi_doc[] =
"";
PyTypeObject rpmmi_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
"rpm.mi", /* tp_name */
sizeof(rpmmiObject), /* tp_size */
0, /* tp_itemsize */
(destructor) rpmmi_dealloc, /* tp_dealloc */
0, /* tp_print */
(getattrfunc)0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
&rpmmi_as_number, /* tp_as_number */
0, /* tp_as_sequence */
&rpmmi_as_mapping, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
PyObject_GenericGetAttr, /* tp_getattro */
PyObject_GenericSetAttr, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /* tp_flags */
rpmmi_doc, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc) rpmmi_iternext, /* tp_iternext */
rpmmi_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0, /* tp_free */
0, /* tp_is_gc */
};
PyObject * rpmmi_Wrap(PyTypeObject *subtype, rpmdbMatchIterator mi, PyObject *s)
{
rpmmiObject * mio = (rpmmiObject *)subtype->tp_alloc(subtype, 0);
if (mio == NULL) return NULL;
mio->mi = mi;
mio->ref = s;
Py_INCREF(mio->ref);
return (PyObject *) mio;
}
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