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:
| index | current rpmdb location |
| file | absolute path to file |
| name | package name |
| dep | provided dependency string |
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:
import rpm
ts = rpm.TransactionSet()
mi = ts.dbMatch()
...
import rpm
db = rpm.opendb()
mi = db.match()
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:
import rpm
db = rpm.opendb()
mi = db.match()
if mi:
h = mi.next()
if h:
print h['name']
To print all of the packages in the database that match a package name, the code will look like this:
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'])
1.2.14 written by Dimitri van Heesch,
© 1997-2002