File opensuse-base-installer.py of Package base-installer

Overview Repositories Revisions Requests Users Attributes Meta

File opensuse-base-installer.py of Package base-installer (Revision ec97140866fc22311a29ad3a8dbe5972)

Currently displaying revision ec97140866fc22311a29ad3a8dbe5972 , Show latest

#!/usr/bin/python

from yum.mdparser import MDParser
import urlgrabber
import sys

if len(sys.argv) == 1:
	print sys.argv[0], " package..."
	sys.exit(1)

# several dicts to query dependencies.
#   provides of a package x: prov[x]
prov = dict()
#   what packages provide x: rprov[x]
rprov = dict()
#   requirements of package x: req[x]
req = dict()
#   what packages require x: rreq[x]
rreq = dict()
#   all requirements ever seen
allreq = set()

# package urls: purl[x]
purl = dict()

# package name from id x: rpid[x]
rpid = dict()

print "Fetching repository data..."

urlgrabber.grabber.urlgrab('http://software.opensuse.org/download/Base:/install/standard/repodata/primary.xml.gz')
mdp = MDParser('primary.xml.gz')
for pkg in mdp:
	if pkg['arch'] != 'src':
		name = pkg['name']
		purl[name] = pkg['location_href']
		rpid[pkg['pkgId']] = name
		req[name] = set()
		for pkgreq in pkg.prco['requires']:
			req[name].add(pkgreq['name'])
			allreq.add(pkgreq['name'])
			rreq.setdefault(pkgreq['name'], set()).add(name)
		prov[name] = set()
		for pkgprov in pkg.prco['provides']:
			prov[name].add(pkgprov['name'])
			rprov.setdefault(pkgprov['name'], set()).add(name)

urlgrabber.grabber.urlgrab('http://software.opensuse.org/download/Base:/install/standard/repodata/filelists.xml.gz')
mdp = MDParser('filelists.xml.gz')
for pkg in mdp:
	if not pkg['pkgId'] in rpid:
		continue
	name = rpid[pkg['pkgId']]
	for file in pkg.files:
		if file in allreq:
			prov[name].add(file)
			rprov.setdefault(file, set()).add(name)

#
# Some simple query functionality
#

if sys.argv[1] == "--what-requires":
	# What requires something that pkg provides
	pkg = sys.argv[2]
	what = set()
	for pkgprov in prov[pkg]:
		if pkgprov in rreq:
			what = what.union (rreq[pkgprov])
	print "Packages that directly require something from ", pkg, ": ", what
	sys.exit(0)
if sys.argv[1] == "--what-provides":
	# What provides foo
	what = sys.argv[2]
	if what in rprov:
		print "Packages that provide ", what, rprov[what]
	else:
		print "Nothing provides ", what
	sys.exit(0)

#
# A simple solver.
#
# Start with package specified on the command line resolving
# all dependencies using a worklist and the first package found
# as a provider for a dependency.

print "Solving dependencies..."

fulfilled = set()
remaining = set()
install = set()

worklist = set()
for arg in sys.argv:
	if arg != sys.argv[0]:
		worklist.add(arg)

while len(worklist) > 0:
	if len(worklist) > 0:
		item = worklist.pop()
		if not item in rprov:
			remaining.add(item)
		else:
			pkg = rprov[item].copy().pop()
			install.add(pkg)
			worklist = worklist.union (req[pkg].difference (fulfilled))
			fulfilled = fulfilled.union (prov[pkg])

print "Must install: ", install
print "Not fulfilled requirements: ", remaining

print "Fetching packages..."

for pkg in install:
	print purl[pkg]
	urlgrabber.grabber.urlgrab('http://software.opensuse.org/download/Base:/install/standard/' + purl[pkg])

Places

File opensuse-base-installer.py of Package base-installer (Revision ec97140866fc22311a29ad3a8dbe5972)

Places