def test_simple_roundtrip(self):
# FIXME: we compare the loaded json to avoid dealing with encoding
# differences when comparing objects, but this is kinda stupid
r_ipkg = InstalledPkgDescription(self.sections, self.meta, {})
f = StringIO()
r_ipkg._write(f)
r_s = f.getvalue()
ipkg = InstalledPkgDescription.from_string(r_s)
f = StringIO()
ipkg._write(f)
s = f.getvalue()
self.assertEqual(json.loads(r_s), json.loads(s))
def test_simple_roundtrip(self):
# FIXME: we compare the loaded json to avoid dealing with encoding
# differences when comparing objects, but this is kinda stupid
r_ipkg = InstalledPkgDescription(self.sections, self.meta, {})
f = StringIO()
r_ipkg._write(f)
r_s = f.getvalue()
ipkg = InstalledPkgDescription.from_string(r_s)
f = StringIO()
ipkg._write(f)
s = f.getvalue()
self.assertEqual(json.loads(r_s), json.loads(s))
def read_ipkg(wininst):
# See eof_cdir size in archive.h of bdist_wininst sources
eof_cdir_n = 22
eof_cdir_tag = 0x06054b50
meta_n = 12
stat_info = os.stat(WININST)
inst_size = stat_info.st_size
with open(WININST, "rb") as fid:
fid.seek(-eof_cdir_n, 2)
s = fid.read(4)
tag = struct.unpack("<l", s)[0]
if not tag == eof_cdir_tag:
raise ValueError("Unexpected bits")
fid.read(2 * 4)
s = fid.read(4)
nBytesCDir = struct.unpack("<l", s)[0]
s = fid.read(4)
ofsCDir = struct.unpack("<l", s)[0]
arc_start = inst_size - eof_cdir_n - nBytesCDir - ofsCDir
ofs = arc_start - meta_n
fid.seek(ofs, 0)
s = fid.read(4)
tag = struct.unpack("<l", s)[0]
if not tag == 0x1234567B:
raise ValueError("Unexpected bits")
s = fid.read(4)
uncomp_size = struct.unpack("<l", s)[0]
s = fid.read(4)
bitmap_size = struct.unpack("<l", s)[0]
pexe_size = ofs - uncomp_size - bitmap_size
fid.seek(pexe_size, 0)
data = fid.read(uncomp_size)
from configparser import ConfigParser
parser = ConfigParser()
sdata = StringIO(data)
def truncate_null(sdata):
cur = sdata.tell()
sdata.seek(0, 2)
nbytes = sdata.tell()
try:
n = 10
sdata.seek(-n, 2)
null_ind = sdata.read().find("\0")
sdata.truncate(nbytes - (n - null_ind))
finally:
sdata.seek(cur, 0)
truncate_null(sdata)
parser.readfp(sdata)
raise ValueError("YO - fix wininst METADATA")
ipkg_str = base64.b64decode(parser.get("IPKG_INFO", "value"))
ipkg = InstalledPkgDescription.from_string(ipkg_str)
return ipkg
def read_ipkg(wininst):
# See eof_cdir size in archive.h of bdist_wininst sources
eof_cdir_n = 22
eof_cdir_tag = 0x06054b50
meta_n = 12
stat_info = os.stat(WININST)
inst_size = stat_info.st_size
with open(WININST, "rb") as fid:
fid.seek(-eof_cdir_n, 2)
s = fid.read(4)
tag = struct.unpack("<l", s)[0]
if not tag == eof_cdir_tag:
raise ValueError("Unexpected bits")
fid.read(2 * 4)
s = fid.read(4)
nBytesCDir = struct.unpack("<l", s)[0]
s = fid.read(4)
ofsCDir = struct.unpack("<l", s)[0]
arc_start = inst_size - eof_cdir_n - nBytesCDir - ofsCDir
ofs = arc_start - meta_n
fid.seek(ofs, 0)
s = fid.read(4)
tag = struct.unpack("<l", s)[0]
if not tag == 0x1234567B:
raise ValueError("Unexpected bits")
s = fid.read(4)
uncomp_size = struct.unpack("<l", s)[0]
s = fid.read(4)
bitmap_size = struct.unpack("<l", s)[0]
pexe_size = ofs - uncomp_size - bitmap_size
fid.seek(pexe_size, 0)
data = fid.read(uncomp_size)
from ConfigParser import ConfigParser
parser = ConfigParser()
sdata = StringIO(data)
def truncate_null(sdata):
cur = sdata.tell()
sdata.seek(0, 2)
nbytes = sdata.tell()
try:
n = 10
sdata.seek(-n, 2)
null_ind = sdata.read().find("\0")
sdata.truncate(nbytes - (n-null_ind))
finally:
sdata.seek(cur, 0)
truncate_null(sdata)
parser.readfp(sdata)
raise ValueError("YO - fix wininst METADATA")
ipkg_str = base64.b64decode(parser.get("IPKG_INFO", "value"))
ipkg = InstalledPkgDescription.from_string(ipkg_str)
return ipkg
