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/** \ingroup py_c
* \file python/rpmdb-py.c
*/
#include "system.h"
#include <rpm/rpmlib.h>
#include "rpmdb-py.h"
#include "rpmmi-py.h"
#include "header-py.h"
#include "debug.h"
/** \ingroup python
* \class Rpmdb
* \brief A python rpmdb object represents an RPM database.
*
* Instances of the rpmdb object provide access to the records of a
* RPM database. The records are accessed by index number. To
* retrieve the header data in the RPM database, the rpmdb object is
* subscripted as you would access members of a list.
*
* The rpmdb class contains the following methods:
*
* - firstkey() Returns the index of the first record in the database.
* @deprecated Use mi = ts.dbMatch() (or db.match()) instead.
*
* - nextkey(index) Returns the index of the next record after "index" in the
* database.
* @param index current rpmdb location
* @deprecated Use hdr = mi.next() instead.
*
* - findbyfile(file) Returns a list of the indexes to records that own file
* "file".
* @param file absolute path to file
* @deprecated Use mi = ts.dbMatch('basename') instead.
*
* - findbyname(name) Returns a list of the indexes to records for packages
* named "name".
* @param name package name
* @deprecated Use mi = ts.dbMatch('name') instead.
*
* - findbyprovides(dep) Returns a list of the indexes to records for packages
* that provide "dep".
* @param dep provided dependency string
* @deprecated Use mi = ts.dbMmatch('providename') instead.
*
* To obtain a db object explicitly, the opendb function in the rpm module
* can be called. The opendb function takes two optional arguments.
* The first optional argument is a boolean flag that specifies if the
* database is to be opened for read/write access or read-only access.
* The second argument specifies an alternate root directory for RPM
* to use.
*
* Note that in most cases, one is interested in querying the default
* database in /var/lib/rpm and an rpm.mi match iterator derived from
* an implicit open of the database from an rpm.ts transaction set object:
* \code
* import rpm
* ts = rpm.TransactionSet()
* mi = ts.dbMatch()
* ...
* \endcode
* is simpler than explicitly opening a database object:
* \code
* import rpm
* db = rpm.opendb()
* mi = db.match()
* \endcode
*
* An example of opening a database and retrieving the first header in
* the database, then printing the name of the package that the header
* represents:
* \code
* import rpm
* db = rpm.opendb()
* mi = db.match()
* if mi:
* h = mi.next()
* if h:
* print h['name']
* \endcode
*
* To print all of the packages in the database that match a package
* name, the code will look like this:
* \code
* import rpm
* db = rpm.opendb()
* mi = db.match('name', "foo")
* while mi:
* h = mi.next()
* if not h:
* break
* print "%s-%s-%s" % (h['name'], h['version'], h['release'])
* \endcode
*/
/** \ingroup python
* \name Class: rpm.db
*/
/**
*/
static rpmmiObject *
rpmdb_Match (rpmdbObject * s, PyObject * args, PyObject * kwds)
{
PyObject *TagN = NULL;
char *key = NULL;
int len = 0;
rpm_tag_t tag = RPMDBI_PACKAGES;
char * kwlist[] = {"tagNumber", "key", "len", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|Ozi", kwlist,
&TagN, &key, &len))
return NULL;
if (TagN && (tag = tagNumFromPyObject (TagN)) == -1) {
PyErr_SetString(PyExc_TypeError, "unknown tag type");
return NULL;
}
return rpmmi_Wrap( rpmdbInitIterator(s->db, tag, key, len), (PyObject *)s);
}
/**
*/
static struct PyMethodDef rpmdb_methods[] = {
{"match", (PyCFunction) rpmdb_Match, METH_VARARGS|METH_KEYWORDS,
"db.match([TagN, [key, [len]]]) -> mi\n\
- Create an rpm db match iterator.\n" },
{NULL, NULL} /* sentinel */
};
/**
*/
static int
rpmdb_length(rpmdbObject * s)
{
rpmdbMatchIterator mi;
int count = 0;
mi = rpmdbInitIterator(s->db, RPMDBI_PACKAGES, NULL, 0);
while (rpmdbNextIterator(mi) != NULL)
count++;
mi = rpmdbFreeIterator(mi);
return count;
}
/**
*/
static hdrObject *
rpmdb_subscript(rpmdbObject * s, PyObject * key)
{
int offset;
hdrObject * ho;
Header h;
rpmdbMatchIterator mi;
if (!PyInt_Check(key)) {
PyErr_SetString(PyExc_TypeError, "integer expected");
return NULL;
}
offset = (int) PyInt_AsLong(key);
mi = rpmdbInitIterator(s->db, RPMDBI_PACKAGES, &offset, sizeof(offset));
if (!(h = rpmdbNextIterator(mi))) {
mi = rpmdbFreeIterator(mi);
PyErr_SetString(pyrpmError, "cannot read rpmdb entry");
return NULL;
}
ho = hdr_Wrap(h);
h = headerFree(h);
return ho;
}
/**
*/
static PyMappingMethods rpmdb_as_mapping = {
(lenfunc) rpmdb_length, /* mp_length */
(binaryfunc) rpmdb_subscript, /* mp_subscript */
(objobjargproc)0, /* mp_ass_subscript */
};
/**
*/
static void rpmdb_dealloc(rpmdbObject * s)
{
if (s->db != NULL)
rpmdbClose(s->db);
PyObject_Del(s);
}
static PyObject * rpmdb_getattro(PyObject * o, PyObject * n)
{
return PyObject_GenericGetAttr(o, n);
}
static int rpmdb_setattro(PyObject * o, PyObject * n, PyObject * v)
{
return PyObject_GenericSetAttr(o, n, v);
}
/**
*/
static char rpmdb_doc[] =
"";
/**
*/
PyTypeObject rpmdb_Type = {
PyObject_HEAD_INIT(&PyType_Type)
0, /* ob_size */
"rpm.db", /* tp_name */
sizeof(rpmdbObject), /* tp_size */
0, /* tp_itemsize */
(destructor) rpmdb_dealloc, /* tp_dealloc */
0, /* tp_print */
(getattrfunc)0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
&rpmdb_as_mapping, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
(getattrofunc) rpmdb_getattro, /* tp_getattro */
(setattrofunc) rpmdb_setattro, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
rpmdb_doc, /* tp_doc */
#if Py_TPFLAGS_HAVE_ITER
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
rpmdb_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 */
#endif
};
#ifdef _LEGACY_BINDINGS_TOO
rpmdb dbFromDb(rpmdbObject * db)
{
return db->db;
}
/**
*/
rpmdbObject *
rpmOpenDB(PyObject * self, PyObject * args, PyObject * kwds) {
rpmdbObject * o;
char * root = "";
int forWrite = 0;
char * kwlist[] = {"forWrite", "rootdir", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|is", kwlist,
&forWrite, &root))
return NULL;
o = PyObject_New(rpmdbObject, &rpmdb_Type);
o->db = NULL;
if (rpmdbOpen(root, &o->db, forWrite ? O_RDWR | O_CREAT: O_RDONLY, 0644)) {
char * errmsg = "cannot open database in %s";
char * errstr = NULL;
int errsize;
Py_DECREF(o);
/* PyErr_SetString should take varargs... */
errsize = strlen(errmsg) + *root == '\0' ? 15 /* "/var/lib/rpm" */ : strlen(root);
errstr = alloca(errsize);
snprintf(errstr, errsize, errmsg, *root == '\0' ? "/var/lib/rpm" : root);
PyErr_SetString(pyrpmError, errstr);
return NULL;
}
return o;
}
/**
* @todo Permit header checks when doing --rebuilddb.
*/
PyObject *
rebuildDB (PyObject * self, PyObject * args, PyObject * kwds)
{
char * rootDir = "";
char * kwlist[] = {"rootdir", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &rootDir))
return NULL;
return Py_BuildValue("i", rpmdbRebuild(rootDir, NULL, NULL));
}
#endif
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