a: fork bsdtar instead of using tarfile

Signed-off-by: Florian Pritz <bluewind@xssn.at>

1 files changed, 24 insertions, 22 deletions

diff --git a/a b/a
index ccb8275..78fdae3 100755
--- a/a
+++ b/a
@@ -11,9 +11,9 @@
 #----------------------------------------------------
 
 import sys
-import tarfile
 import os
 from optparse import OptionParser
+from subprocess import Popen, PIPE
 
 def main():
   usage = "usage: %prog [options] <files>"
@@ -39,32 +39,34 @@ def main():
   if options.tarname:
     tarname = options.tarname
   else:
-    tarname = args[0]
+    tarname = args[0]+".tar"
+  tarcmd = ['bsdtar', '-c']
 
   if options.bz2:
-    tarname += ".tar.bz2"
-    file_exists(tarname, options)
-    tar = tarfile.open(tarname, "w|bz2")
-  elif options.uncompressed or options.xz:
-    tarname += ".tar"
-    file_exists(tarname, options)
-    tar = tarfile.open(tarname, "w")
+    tarname += ".bz2"
+    tarcmd.extend(['-jf', tarname])
+  elif options.uncompressed:
+    tarcmd.extend(['-f', tarname])
+  elif options.xz:
+    tarname += ".xz"
+    tarcmd.extend(['-Jf', tarname])
   else:
-    tarname += ".tar.gz"
-    file_exists(tarname, options)
-    tar = tarfile.open(tarname, "w|gz")
+    tarname += ".gz"
+    tarcmd.extend(['-zf', tarname])
 
-  for name in args:
-    try:
-      tar.add(name)
-    except OSError:
-      sys.stderr.write("No such file or directory: '%s'\n" % name)
-  tar.close()
-  if options.xz:
-      os.system('xz '+tarname)
+  if not options.force:
+    file_exists(tarname)
+  Popen(merge([tarcmd, args]), stdout=PIPE).communicate()[0]
 
-def file_exists(filename, options):
-    if os.path.exists(filename) and not options.force:
+def merge(seq):
+    merged = []
+    for s in seq:
+        for x in s:
+            merged.append(x)
+    return merged
+
+def file_exists(filename):
+    if os.path.exists(filename):
         sys.stderr.write('Target "'+filename+'" already exists. Use --force to overwrite.\n')
         sys.exit(1)