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Hi everyone,
It's come to my attention that the built_with_use function in eutils.eclass
accesses the installed package database directly. This is a major problem
because it prevents us from being able to have an alternative installed package
database implementation without breaking that function. How about if we add a
new portageq function that simply acts as a wrapper to the dbapi.aux_get()
function? If we provide this function, then eutils.eclass can simply use the
package that is returned from best_version to do another call that gets the USE
flags. Here's an example of the usage:
portageq metadata / installed sys-apps/portage-2.1-r1 USE
That command would print 1 line with all the USE flags. If additional metadata
keys are specified, it will print each value on a new line. Does the behavior
described above seem good or are there any suggestions to improve it? Please
see the attached patch.
Zac
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Index: bin/portageq
===================================================================
--- bin/portageq (revision 3854)
+++ bin/portageq (working copy)
@@ -80,7 +80,34 @@
sys.exit(1)
mass_best_version.uses_root = True
+def metadata(argv):
+ """<root> <pkgtype> <category/package> [<key>]+
+ Returns a metadata value for the specified package.
+ """
+ if (len(argv) < 4):
+ print >> sys.stderr, "ERROR: insufficient parameters!"
+ sys.exit(2)
+ root, pkgtype, pkgspec = argv[0:3]
+ metakeys = argv[3:]
+ type_map = {
+ "ebuild":"porttree",
+ "binary":"bintree",
+ "installed":"vartree"}
+ if pkgtype not in type_map:
+ print >> sys.stderr, "Unrecognized package type: '%s'" % pkgtype
+ sys.exit(1)
+ try:
+ values = portage.db[root][type_map[pkgtype]].dbapi.aux_get(
+ pkgspec, metakeys)
+ for value in values:
+ print value
+ except KeyError:
+ print >> sys.stderr, "Package not found: '%s'" % pkgspec
+ sys.exit(1)
+
+metadata.uses_root = True
+
def best_visible(argv):
"""<root> [<category/package>]+
Returns category/package-version (without .ebuild).
