def parsePackages(self, f, pkgtype):
"""Parse a Packages file and get the information we need."""
p = apt_pkg.ParseTagFile(f)
while p.Step() == 1:
pkg = p.Section["Package"]
self.packages[pkg] = {}
self.packagetype[pkg] = pkgtype
self.pruned[pkg] = set()
self.packages[pkg]["Maintainer"] = \
unicode(p.Section.get("Maintainer", ""), "utf8", "replace")
for field in "Pre-Depends", "Depends", "Recommends", "Suggests":
value = p.Section.get(field, "")
self.packages[pkg][field] = apt_pkg.ParseDepends(value)
for field in "Size", "Installed-Size":
value = p.Section.get(field, "0")
self.packages[pkg][field] = int(value)
src = p.Section.get("Source", pkg)
idx = src.find("(")
if idx != -1:
src = src[:idx].strip()
self.packages[pkg]["Source"] = src
provides = apt_pkg.ParseDepends(p.Section.get("Provides", ""))
for prov in provides:
if prov[0][0] not in self.provides:
self.provides[prov[0][0]] = []
if prov[0][0] in self.packages:
self.provides[prov[0][0]].append(prov[0][0])
self.provides[prov[0][0]].append(pkg)
self.packages[pkg]["Provides"] = provides
if pkg in self.provides:
self.provides[pkg].append(pkg)
self.packages[pkg]["Kernel-Version"] = p.Section.get(
"Kernel-Version", "")
f.close()
def __parsePackages__(self, f):
"""
Most info are raw info. This method parses the needed fields.
"""
p = apt_pkg.ParseTagFile(f)
# Just load into memory the fields that are going to be useful
while p.Step() == 1:
pkg = p.Section['Package']
self.packages[pkg] = {}
for field in p.Section.keys():
if field == 'Package':
pass
elif [
'Depends', 'Recommends', 'Suggests', 'Enhances',
'Pre-Depends', 'Conflicts', 'Provides'
].count(field):
value = p.Section.get(field, "")
self.packages[pkg][field] = apt_pkg.ParseDepends(value)
elif ['Size', 'Installed-Size'].count(field):
value = p.Section.get(field, "0")
self.packages[pkg][field] = int(value)
elif field == 'Source':
src = p.Section.get(field, pkg)
idx = src.find('(')
if idx != -1:
src = src[:idx].strip()
self.packages[pkg][field] = src
elif field == 'Provides':
self.packages[pkg]["Provides"] = apt_pkg.ParseDepends(
p.Section.get("Provides", ""))
else:
self.packages[pkg][field] = p.Section.get(field, '')
f.close()
def testParseDepends(self):
"""dependencies: Test apt_pkg.ParseDepends()."""
if not hasattr(apt_pkg, 'ParseDepends'):
return
# Check that the type of comparison is parsed correctly.
self.assertEqual("<<", apt_pkg.ParseDepends("p1 (<< 1)")[0][0][2])
self.assertEqual("<=", apt_pkg.ParseDepends("p1 (< 1)")[0][0][2])
self.assertEqual("<=", apt_pkg.ParseDepends("p1 (<= 1)")[0][0][2])
self.assertEqual("=", apt_pkg.ParseDepends("p1 (= 1)")[0][0][2])
self.assertEqual(">=", apt_pkg.ParseDepends("p1 (>= 1)")[0][0][2])
self.assertEqual(">=", apt_pkg.ParseDepends("p1 (> 1)")[0][0][2])
self.assertEqual(">>", apt_pkg.ParseDepends("p1 (>> 1)")[0][0][2])
def parseSources(self, f):
"""Parse a Sources file and get the information we need."""
p = apt_pkg.ParseTagFile(f)
while p.Step() == 1:
src = p.Section["Package"]
self.sources[src] = {}
self.sources[src]["Maintainer"] = \
unicode(p.Section.get("Maintainer", ""), "utf8", "replace")
self.sources[src]["IPv6"] = "Unknown"
for field in "Build-Depends", "Build-Depends-Indep":
value = p.Section.get(field, "")
self.sources[src][field] = apt_pkg.ParseSrcDepends(value)
binaries = apt_pkg.ParseDepends(p.Section.get("Binary", src))
self.sources[src]["Binaries"] = [bin[0][0] for bin in binaries]
f.close()
sys.exit(1)
file = sys.argv[1]
print "Working on: %s" % file
print "Displaying data.tar.gz:"
apt_inst.debExtract(open(file), Callback, "data.tar.gz")
print "Now extracting the control file:"
control = apt_inst.debExtractControl(open(file))
sections = apt_pkg.ParseSection(control)
print "Maintainer is: "
print sections["Maintainer"]
print
print "DependsOn: "
depends = sections["Depends"]
print apt_pkg.ParseDepends(depends)
print "extracting archive"
dir = "/tmp/deb"
os.mkdir(dir)
apt_inst.debExtractArchive(open(file), dir)
def visit(arg, dirname, names):
print "%s/" % dirname
for file in names:
print "\t%s" % file
os.path.walk(dir, visit, None)
#!/usr/bin/env python
import apt_pkg
Parse = apt_pkg.TagFile(open("/var/lib/dpkg/status", "r"))
while Parse.Step() == 1:
print Parse.Section.get("Package")
print apt_pkg.ParseDepends(Parse.Section.get("Depends", ""))