import sys, os, tempfile
import apt_pkg
-import daklib.utils as utils
+import bz2, gzip, time
+from daklib import utils
################################################################################
print "missing: %s" % (f)
raise IOError, f
-def smartopen(file):
- if os.path.isfile(file):
- f = open(file, "r")
- elif os.path.isfile("%s.gz" % file):
- f = create_temp_file(os.popen("zcat %s.gz" % file, "r"))
- elif os.path.isfile("%s.bz2" % file):
- f = create_temp_file(os.popen("bzcat %s.bz2" % file, "r"))
+def smartread(filename):
+ """
+ If filename exists, slurp the contents into a string.
+ if filename.gz or filename.bz2 exists instead, decompress and slurp
+ It returns a tuple of (filename, filecontents)
+ """
+ actual_filename = None
+ contents = None
+ if os.path.isfile(filename):
+ f = open(filename, "r")
+ elif os.path.isfile("%s.gz" % filename):
+ actual_filename = "%s.gz" % filename
+ f = decompressors['zcat'](actual_filename)
+ elif os.path.isfile("%s.bz2" % filename):
+ actual_filename = "%s.bz2" % filename
+ f = decompressors['bzcat'](actual_filename)
else:
f = None
- return f
+
+ if f:
+ contents = f.read()
+
+ return (actual_filename, contents)
def pipe_file(f, t):
f.seek(0)
for h in l:
out.write(" %s %7d %s\n" % (hs[h][1][0], hs[h][1][1], h))
-def create_temp_file(r):
- f = tempfile.TemporaryFile()
- while 1:
- x = r.readline()
- if not x: break
- f.write(x)
- r.close()
- del x,r
- f.flush()
- f.seek(0)
- return f
+decompressors = { 'zcat' : gzip.GzipFile,
+ 'bzip2' : bz2.BZ2File }
+
+def sizesha1_str(s):
+ """
+ given a string, return a tuple containing its (sha1sum, length)
+ """
+ return (apt_pkg.sha1sum(s), len( s ) )
def sizesha1(f):
size = os.fstat(f.fileno())[6]
print "%s: hardlink unbroken, assuming unchanged" % (origfile)
return
- oldf = smartopen(oldfile)
- oldsizesha1 = sizesha1(oldf)
+ (oldf,contents) = smartread(oldfile)
+ oldsizesha1 = sizesha1_str(contents)
# should probably early exit if either of these checks fail
# alternatively (optionally?) could just trim the patch history
print "warning: old file seems to have changed! %s %s => %s %s" % (upd.filesizesha1 + oldsizesha1)
# XXX this should be usable now
+ # stew: whatever this is, it won't be usable now that i removed smartopen
#
#for d in upd.history.keys():
# df = smartopen("%s/%s" % (outdir,d))
if newsizesha1 == oldsizesha1:
os.unlink(newfile)
- oldf.close()
+# oldf.close()
print "%s: unchanged" % (origfile)
else:
if not os.path.isdir(outdir): os.mkdir(outdir)
- w = os.popen("diff --ed - %s | gzip -c -9 > %s.gz" %
- (newfile, difffile), "w")
- pipe_file(oldf, w)
- oldf.close()
+ os.popen("diff --ed %s %s | gzip -c -9 > %s.gz" %
+ (oldf, newfile, difffile))
+# pipe_file(oldf, w)
+# oldf.close()
- difff = smartopen(difffile)
- difsizesha1 = sizesha1(difff)
- difff.close()
+ (oldf,contents) = smartread(difffile)
+ difsizesha1 = sizesha1_str(contents)
upd.history[patchname] = (oldsizesha1, difsizesha1)
upd.history_order.append(patchname)
if not Options.has_key("PatchName"):
format = "%Y-%m-%d-%H%M.%S"
- i,o = os.popen2("date +%s" % (format))
- i.close()
- Options["PatchName"] = o.readline()[:-1]
- o.close()
+ Options["PatchName"] = time.strftime( format )
AptCnf = apt_pkg.newConfiguration()
apt_pkg.ReadConfigFileISC(AptCnf,utils.which_apt_conf_file())