tarxz function and test parser

pyBackup.py

@@ -8,21 +8,31 @@ import os
 
 def main():
     args = _parser()
+
+    print("Arguments: ", args) if args.debug else None
+
     if "func" in args:
-        return args.func()
+        return args.func(args)
 
 def _parser():
     import argparse as ap
     parser = ap.ArgumentParser()
     parser.set_defaults(func=parser.print_help)
     parser.add_argument("-d", "--debug", action="count", default=0)
+
     subp = parser.add_subparsers()
     subp_sc = subp.add_parser("shellscript")
     subp_sc.set_defaults(func=_shellscript_command)
+
     subp_sc = subp.add_parser("cronjob")
     subp_sc.set_defaults(func=lambda:print(Cronjob(command="asdf")))
+
     subp_sc = subp.add_parser("install")
     subp_sc.set_defaults(func=_install_command)
+
+    subp_sc = subp.add_parser("test")
+    subp_sc.set_defaults(func=_test_command)
+
     return parser.parse_args()
 
 def _shellscript_command(args):
@@ -31,6 +41,11 @@ def _shellscript_command(args):
 def _install_command(args):
     return bash(SHELLSCRIPT).returncode
 
+def _test_command(args):
+    proc = tarxz(".", "/dev/null", debug=args.debug)
+    proc.wait()
+    return proc.returncode
+
 def bash(script="", args=[], encoding="utf-8"):
     import subprocess as sub
     proc = sub.Popen(["bash"], stdin=sub.PIPE)
@@ -39,8 +54,32 @@ def bash(script="", args=[], encoding="utf-8"):
     proc.wait()
     return proc
 
-def tarxz():
-    pass
+def checkmount(mountpoints):
+    if type(mountpoints) == str:
+        mountpoints = [mountpoints]
+    mounts = [a.split() for a in open("/proc/mounts").readlines()]
+    for mp in mountpoints:
+        pass
+
+def tarxz(infiles, tarxzfile, relative_root="/", parallel=0, debug=0):
+    import subprocess as sub
+    if type(infiles) == str:
+        infiles = [infiles]
+    infiles = [
+        os.path.relpath(f, start=relative_root)
+        for f in infiles
+    ]
+    env = os.environ.copy()
+    env.update({
+        "XZ_OPT": "-4e -T {parallel}".format(parallel=parallel),
+    })
+    CMD = ["tar", "-c", "-J", "-C", relative_root, "-f", tarxzfile] + infiles
+
+    print("tarxz env:",env) if debug>1 else None
+    print("tarxz CMD:",CMD) if debug else None
+    proc = sub.Popen(CMD, env=env)
+    return proc
+    
 
 class Cronjob:
     _minute = "*"