Added new option for selecting adb executable

Previously it was possible (most probably unintentionally) to perform
command which gives listing of directory contents on the output:

$ adb shell su -c toolbox ls /
acct
cache
charger
config
...

Using such syntax in newer versions of adb, return an error:

$ adb shell su -c toolbox ls /
Unknown id: ls

It is needed to quote argument passed to the 'shell' parameter on adb,
like:

$ adb shell 'su -c "toolbox ls /"'
acct
cache
charger
config
...

This patch fixes this issue for both adb versions.

README.rst

@@ -9,15 +9,19 @@ Rquirements
 ===========
 
 * Python 2.7
-* ``adb`` installed and in ``$PATH``
+* ``adb`` installed and in ``$PATH`` or provided via the config file
 * An Android device or emulator preferably rooted
 * Busybox installed and available in the path on the device
 
-Make sure, that issuing from command line::
+Make sure, that issuing from command line:
+
+.. code:: shell-session
 
    $ adb shell busybox ls
+   $ # or in case of no PATH adb placement
+   $ /path/to/adb shell busybox ls
 
-should display files from root directory on the device.
+it should display files from root directory on the device.
 
 Features
 ========
@@ -39,15 +43,49 @@ if needed.
 Usage
 =====
 
-To use it, just issue::
+To use it, just issue:
 
-    cd adbfs://
+.. code:: shell-session
+
+   cd adbfs://
 
 under MC - after some time you should see the files and directories on your
 device. For convenience you can add a bookmark (accessible under CTRL+\) for
 fast access. The time is depended on how many files and directories you have on
 your device and how fast it is :)
 
+Configuration
+=============
+
+You can configure behaviour of this plugin using ``.ini`` file located under
+``$XDG_CONFIG_HOME/mc/adbfs.ini`` (which usually is located under
+``~/.config/mc/adbfs.ini``), and have default values, like:
+
+.. code:: ini
+
+   [adbfs]
+   debug = false
+   skip_dirs = true
+   dirs_to_skip = ["acct", "charger", "d", "dev", "proc", "sys"]
+   suppress_colors = false
+   root =
+   adb_command = adb
+
+where:
+
+* ``debug`` will provide a little bit more verbose information, useful for
+  debugging
+* ``dirs_to_skip`` list of paths to directories which will be skipped during
+  reading. If leaved empty, or setted to empty list (``[]``) will read
+  everything (slow!)
+* ``suppress_colors`` this option will make ``busybox`` not to display colors,
+  helpful, if ``busybox ls`` is configured to display colors by default. Does
+  not affect ``toolbox``.
+* ``root`` root directory to read. Everything outside of that directory will be
+  omitted. That would be the fastest way to access certain location on the
+  device. Note, that ``dirs_to_skip`` still apply inside this directory.
+* ``adb_command`` = path to ``adb`` command.
+
 Limitations
 ===========
 
@@ -55,6 +93,8 @@ Limitations
   files are on the device and so on
 * Some filenames might be still inaccessible for operating
 * All files operations which needs root privileges will fail (for now)
+* The implementation is experimental and it's by now working with mine device;
+  while it might not work with yours
 
 License
 =======

adbfs

@@ -2,38 +2,151 @@
 """
 adbfs Virtual filesystem for Midnight Commander
 
-* Copyright (c) 2015, Roman Dobosz,
+* Copyright (c) 2016, Roman Dobosz,
 * Published under 3-clause BSD-style license (see LICENSE file)
-
-Version: 0.7
 """
 
+import ConfigParser
+import argparse
 from datetime import datetime
+import errno
+import json
 import os
-import pipes
 import re
 import subprocess
 import sys
 
+__version__ = 0.10
 
-DEBUG = os.getenv("ADBFS_DEBUG", False)
-SKIP_SYSTEM_DIR = os.getenv("ADBFS_SKIP_SYSTEM_DIR", True)
+XDG_CONFIG_HOME = os.getenv('XDG_CONFIG_HOME', os.path.expanduser('~/.config'))
+
+
+class NoBoxFoundException(OSError):
+    """
+    Exception raised in case of not found either toolbox or busybox on remote
+    filesystem accessed via adb
+    """
+    pass
+
+
+class Conf(object):
+    """Simple config parser"""
+    boxes = {'busybox': {'ls': 'busybox ls -anel',
+                         'rls':  'busybox ls -Ranel {}',
+                         'file_re': r'^(?P<perms>[-bcdlps][-rwxsStT]{9})\s+'
+                                    r'(?P<links>\d+)\s'
+                                    r'(?P<uid>\d+)\s+'
+                                    r'(?P<gid>\d+)\s+'
+                                    r'(?P<size>\d+)\s[A-Z,a-z]{3}\s'
+                                    r'(?P<date_time>[A-Z,a-z]{3}\s+'
+                                    r'\d+\s\d{2}:\d{2}:\d{2}\s+\d{4})\s'
+                                    r'(?P<name>.*)'},
+             'toolbox': {'ls': 'toolbox ls -anl',
+                         'rls':  'toolbox ls -Ranl {}',
+                         'file_re': r'^(?P<perms>[-bcdlps][-rwxsStT]{9})\s+'
+                                    r'(?P<uid>\d+)\s+'
+                                    r'(?P<gid>\d+)\s+'
+                                    r'(?P<size>\d+)?\s'
+                                    r'(?P<date>\d{4}-\d{2}-\d{2}\s'
+                                    r'\d{2}:\d{2})\s'
+                                    r'(?P<name>.*)'}}
+
+    def __init__(self):
+        self.box = None
+        self.debug = False
+        self.dirs_to_skip = ['acct', 'charger', 'd', 'dev', 'proc', 'sys']
+        self.root = None
+        self.suppress_colors = False
+        self.adb_command = 'adb'
+
+        self.read()
+        self.get_the_box()
+
+    def get_the_box(self):
+        """Detect if we dealing with busybox or toolbox"""
+        cmd = [self.adb_command] + 'shell which'.split()
+        try:
+            with open(os.devnull, 'w') as fnull:
+                result = subprocess.check_output(cmd + ['busybox'],
+                                                 stderr=fnull)
+            if 'busybox' in result:
+                self.box = Conf.boxes['busybox']
+                if self.suppress_colors:
+                    self.box.update({'ls': 'busybox ls --color=none -anel',
+                                     'rls': 'busybox ls --color=none '
+                                            '-Ranel {}'})
+                Adb.file_re = re.compile(self.box['file_re'])
+                return
+        except subprocess.CalledProcessError:
+            pass
+
+        try:
+            with open(os.devnull, 'w') as fnull:
+                result = subprocess.check_output(cmd + ['toolbox'],
+                                                 stderr=fnull)
+
+            if 'toolbox' in result:
+                self.box = Conf.boxes['toolbox']
+                Adb.file_re = re.compile(self.box['file_re'])
+                return
+        except subprocess.CalledProcessError:
+            pass
+
+        raise NoBoxFoundException(errno.ENOENT,
+                                  'There is no toolbox or busybox available')
+
+    def read(self):
+        """
+        Read config file and change the options according to values from that
+        file.
+        """
+        if not os.path.exists(XDG_CONFIG_HOME):
+            return
+
+        conf_fname = os.path.join(XDG_CONFIG_HOME, 'mc', 'adbfs.ini')
+        if not os.path.exists(conf_fname):
+            return
+
+        cfg = ConfigParser.SafeConfigParser()
+        cfg_map = {'debug': (cfg.getboolean, 'debug'),
+                   'dirs_to_skip': (cfg.get, 'dirs_to_skip'),
+                   'suppress_colors': (cfg.get, 'suppress_colors'),
+                   'root': (cfg.get, 'root'),
+                   'adb_command': (cfg.get, 'adb')}
+        cfg.read(conf_fname)
+
+        for key, (function, attr) in cfg_map.items():
+            try:
+                setattr(self, attr, function('adbfs', key))
+            except (ConfigParser.NoSectionError, ConfigParser.NoOptionError):
+                pass
+
+        if self.dirs_to_skip and isinstance(self.dirs_to_skip, str):
+            self.dirs_to_skip = json.loads(self.dirs_to_skip, encoding='ascii')
+            self.dirs_to_skip = [x.encode('utf-8') for x in self.dirs_to_skip]
+        else:
+            self.dirs_to_skip = []
+
+        if self.adb_command:
+            self.adb_command = os.path.expandvars(self.adb_command)
+            self.adb_command = os.path.expanduser(self.adb_command)
 
 
 class File(object):
     """Item in filesystem representation"""
-    def __init__(self, perms=None, links=1, uid=0, gid=0, size=0,
-                 date_time=None, name=None):
+    def __init__(self, perms=None, links=1, uid=0, gid=0, size=None,
+                 date_time=None, date=None, name=None):
         """initialize file"""
         self.perms = perms
         self.links = links
         self.uid = uid
         self.gid = gid
-        self.size = size
+        self.size = size if size else 0
         self.date_time = date_time  # as string
         self.name = name
+        self.date = date  # as string
 
-        self.dirname = ""
+        self.dirname = ''
         self.type = None
         self.string = None
         self.link_target = None
@@ -42,12 +155,16 @@ class File(object):
     def _correct_link(self):
         """Canonize filename and fill the link attr"""
         try:
-            name, target = self.name.split(" -> ")
+            name, target = self.name.split(' -> ')
         except ValueError:
             return
 
         self.name = name
-        if target.startswith("/"):
+
+        if not self.size:
+            self.size = 0
+
+        if target.startswith('/'):
             self.link_target = target
         else:
             self.link_target = os.path.abspath(os.path.join(self.dirname,
@@ -55,60 +172,62 @@ class File(object):
 
     def update(self, dirname):
         """update object fields"""
-        month_num = {"Jan": 1,
-                     "Feb": 2,
-                     "Mar": 3,
-                     "Apr": 4,
-                     "May": 5,
-                     "Jun": 6,
-                     "Jul": 7,
-                     "Aug": 8,
-                     "Sep": 9,
-                     "Oct": 10,
-                     "Nov": 11,
-                     "Dec": 12}
+        month_num = {'Jan': 1,
+                     'Feb': 2,
+                     'Mar': 3,
+                     'Apr': 4,
+                     'May': 5,
+                     'Jun': 6,
+                     'Jul': 7,
+                     'Aug': 8,
+                     'Sep': 9,
+                     'Oct': 10,
+                     'Nov': 11,
+                     'Dec': 12}
         self.dirname = dirname
-        date = self.date_time.split()
-        date = "%s-%02d-%s %s" % (date[1],
-                                  month_num[date[0]],
-                                  date[3],
-                                  date[2])
-        date = datetime.strptime(date, "%d-%m-%Y %H:%M:%S")
-        self.date_time = date.strftime("%m/%d/%Y %H:%M:01")
+        if self.date_time:
+            date = self.date_time.split()
+            date = '%s-%02d-%s %s' % (date[1],
+                                      month_num[date[0]],
+                                      date[3],
+                                      date[2])
+            date = datetime.strptime(date, '%d-%m-%Y %H:%M:%S')
+        elif self.date:
+            date = datetime.strptime(self.date, '%Y-%m-%d %H:%M')
+
+        self.date_time = date.strftime('%m/%d/%Y %H:%M:01')
+
         self.type = self.perms[0] if self.perms else None
 
-        if self.type == "l" and " -> " in self.name:
+        if self.type == 'l' and ' -> ' in self.name:
             self._correct_link()
 
         self.filepath = os.path.join(self.dirname, self.name)
 
-    def mk_link_relative(self, target_type):
+    def mk_link_relative(self):
         """Convert links to relative"""
-        rel_path = self.dirname
-        # if target_type == "d":
-            # rel_path = self.filepath
-        self.link_target = os.path.relpath(self.link_target, rel_path)
+        self.link_target = os.path.relpath(self.link_target, self.dirname)
 
     def __repr__(self):
         """represent the file/entire node"""
         fullname = os.path.join(self.dirname, self.name)
         if self.link_target:
-            fullname += " -> " + self.link_target
-        return "<File {type} {name} {id}>".format(type=self.type,
+            fullname += ' -> ' + self.link_target
+        return '<File {type} {name} {id}>'.format(type=self.type,
                                                   name=fullname,
                                                   id=hex(id(self)))
 
     def __str__(self):
         """display the file/entire node"""
-        template = ("{perms} {links:>4} {uid:<8} {gid:<8} {size:>8} "
-                    "{date_time} {fullname}\n")
+        template = ('{perms} {links:>4} {uid:<8} {gid:<8} {size:>8} '
+                    '{date_time} {fullname}\n')
 
         if not self.name:
-            return ""
+            return ''
 
         fullname = os.path.join(self.dirname, self.name)
         if self.link_target:
-            fullname += " -> " + self.link_target
+            fullname += ' -> ' + self.link_target
 
         return template.format(perms=self.perms,
                                links=self.links,
@@ -121,25 +240,32 @@ class File(object):
 
 class Adb(object):
     """Class for interact with android rooted device through adb"""
-    dirs_to_skip = ["acct", "charger", "d", "dev", "proc", "sys"]
-    file_re = re.compile(r'^(?P<perms>[-bcdlps][-rwxsStT]{9})\s+'
-                         r'(?P<links>\d+)\s'
-                         r'(?P<uid>\d+)\s+'
-                         r'(?P<gid>\d+)\s+'
-                         r'(?P<size>\d+)\s[A-Z,a-z]{3}\s'
-                         r'(?P<date_time>[A-Z,a-z]{3}\s+'
-                         r'\d+\s\d{2}:\d{2}:\d{2}\s+\d{4})\s'
-                         r'(?P<name>.*)')
-
-    current_re = re.compile(r"^(\./)?(?P<dir>.+):$")
-    as_root = os.getenv("ADBFS_AS_ROOT", False)
-    verbose = os.getenv("ADBFS_VERBOSE", False)
+    file_re = None
+    current_re = re.compile(r'^(\./)?(?P<dir>.+):$')
 
     def __init__(self):
         """Prepare archive content for operations"""
         super(Adb, self).__init__()
+        self.conf = Conf()
+        self.error = ''
         self._entries = []
         self._links = {}
+        self._got_root = False
+
+        self.__su_check()
+
+    def __su_check(self):
+        """Check if we are able to get elevated privileges"""
+        cmd = [self.conf.adb_command] + 'shell su -c whoami'.split()
+        try:
+            with open(os.devnull, 'w') as fnull:
+                result = subprocess.check_output(cmd, stderr=fnull)
+
+        except subprocess.CalledProcessError:
+            return
+
+        if 'root' in result:
+            self._got_root = True
 
     def _find_target(self, needle):
         """Find link target"""
@@ -153,6 +279,7 @@ class Adb(object):
         for entry in self._entries:
             if entry.filepath == needle:
                 return entry
+
         return None
 
     def _normalize_links(self):
@@ -170,38 +297,99 @@ class Adb(object):
             target_entry = self._find_target(entry.link_target)
             if target_entry:
                 entry.link_target = target_entry.filepath
-                entry.mk_link_relative(target_entry.type)
+                entry.mk_link_relative()
             else:
                 elems_to_remove.append(self._entries.index(entry))
 
         for idx in sorted(elems_to_remove, reverse=True):
             del self._entries[idx]
 
+    def _retrieve_single_dir_list(self, dir_):
+        """Retrieve file list using adb"""
+        lscmd = self.conf.box['rls'].format(dir_)
+        if self._got_root:
+            lscmd = 'su -c "{}"'.format(lscmd)
+        command = [self.conf.adb_command, 'shell', lscmd]
+
+        try:
+            if self.conf.debug:
+                print 'executing', ' '.join(command)
+
+            lines = subprocess.check_output(command)
+        except subprocess.CalledProcessError:
+            sys.stderr.write('Cannot read directory. Is device connected?\n')
+            return 1
+
+        lines = [l.strip() for l in lines.split('\n') if l.strip()]
+        if len(lines) == 1:
+            reg_match = self.file_re.match(lines[0])
+            entry = File(**reg_match.groupdict())
+            entry.update('/')
+
+            if entry.filepath in self.conf.dirs_to_skip:
+                return
+
+            self._entries.append(entry)
+            if entry.type == 'l':
+                self._links[entry.filepath] = entry
+                self._retrieve_single_dir_list(entry.link_target)
+        else:
+            for line in lines:
+                current_dir_re = self.current_re.match(line)
+                if current_dir_re:
+                    current_dir = current_dir_re.groupdict()['dir']
+                    if not current_dir:
+                        current_dir = '/'
+                    continue
+
+                reg_match = self.file_re.match(line)
+                if not reg_match:
+                    continue
+
+                entry = File(**reg_match.groupdict())
+                if entry.name in ('.', '..'):
+                    continue
+
+                entry.update(current_dir)
+
+                if entry.filepath in self.conf.dirs_to_skip:
+                    continue
+
+                self._entries.append(entry)
+
+                if entry.type == 'l':
+                    self._links[entry.filepath] = entry
+
     def _retrieve_file_list(self, root=None):
         """Retrieve file list using adb"""
 
-        # if root:
-            # print "retrieve for %s" % root.filepath
-        command = ["adb", "shell", "su", "-c"]
         if not root:
-            command.append("'busybox ls -anel'")
+            lscmd = self.conf.box['ls']
         else:
-            command.append("'busybox ls -Ranel {}'".format(root.filepath))
+            lscmd = self.conf.box['rls'].format(root.filepath)
+
+        if self._got_root:
+            lscmd = 'su -c "{}"'.format(lscmd)
+
+        command = [self.conf.adb_command, 'shell', lscmd]
 
         try:
+            if self.conf.debug:
+                print 'executing', ' '.join(command)
+
             lines = subprocess.check_output(command)
         except subprocess.CalledProcessError:
-            sys.stderr.write("Cannot read directory. Is device connected?\n")
+            sys.stderr.write('Cannot read directory. Is device connected?\n')
             return 1
 
-        current_dir = root.dirname if root else "/"
-        for line in lines.split("\n"):
+        current_dir = root.dirname if root else '/'
+        for line in lines.split('\n'):
             line = line.strip()
             current_dir_re = self.current_re.match(line)
             if current_dir_re:
-                current_dir = current_dir_re.groupdict()["dir"]
+                current_dir = current_dir_re.groupdict()['dir']
                 if not current_dir:
-                    current_dir = "/"
+                    current_dir = '/'
                 continue
 
             reg_match = self.file_re.match(line)
@@ -209,85 +397,139 @@ class Adb(object):
                 continue
 
             entry = File(**reg_match.groupdict())
-            if entry.name in (".", ".."):
-                continue
-
-            if SKIP_SYSTEM_DIR and entry.name in Adb.dirs_to_skip:
+            if entry.name in ('.', '..'):
                 continue
 
             entry.update(current_dir)
 
+            if entry.filepath in self.conf.dirs_to_skip:
+                continue
+
             self._entries.append(entry)
-            if root is None and entry.type == "d":
+            if root is None and entry.type == 'd':
                 self._retrieve_file_list(entry)
 
-            if entry.type == "l":
+            if entry.type == 'l':
                 self._links[entry.filepath] = entry
 
     def run(self, fname):
         """Not supported"""
-        sys.stderr.write("Not supported - or maybe you are on compatible "
-                         "architecture?\n")
+        sys.stderr.write('Not supported - or maybe you are on compatible '
+                         'architecture?\n')
         return 1
 
     def list(self):
         """Output list contents directory"""
-        self._retrieve_file_list()
-        # self._retrieve_file_list_from_pickle()
-        # self._save_file_list_to_pickle()
+        if self.error:
+            sys.stderr.write(self.error)
+            return 1
+
+        if self.conf.root:
+            self._retrieve_single_dir_list(self.conf.root)
+        else:
+            self._retrieve_file_list()
+
         self._normalize_links()
-        sys.stdout.write("".join([str(entry) for entry in self._entries]))
+        sys.stdout.write(''.join([str(entry) for entry in self._entries]))
         return 0
 
     def copyout(self, src, dst):
         """Copy file form the device using adb."""
-        with open(os.devnull, "w") as fnull:
-            return subprocess.call(["adb", "pull", pipes.quote(src),
-                                   pipes.quote(dst)],
-                                   stdout=fnull, stderr=fnull)
+        if self.error:
+            sys.stderr.write(self.error)
+            return 1
+
+        cmd = [self.conf.adb_command, 'pull', src, dst]
+        if self.conf.debug:
+            sys.stderr.write(' '.join(cmd) + '\n')
+
+        with open(os.devnull, 'w') as fnull:
+            try:
+                err = subprocess.call(cmd, stdout=fnull, stderr=fnull)
+            except subprocess.CalledProcessError:
+                sys.stderr.write('Error executing adb shell')
+                return 1
+
+        return err
 
     def copyin(self, src, dst):
         """Copy file to the device through adb."""
-        if not dst.startswith("/"):
-            dst = "/" + dst
+        if self.error:
+            sys.stderr.write(self.error)
+            return 1
+        if not dst.startswith('/'):
+            dst = '/' + dst
 
-        with open(os.devnull, "w") as fnull:
-            err = subprocess.call(["adb", "push", pipes.quote(src),
-                                   pipes.quote(dst)],
-                                  stdout=fnull, stderr=fnull)
+        cmd = [self.conf.adb_command, 'push', src, dst]
+        if self.conf.debug:
+            sys.stderr.write(' '.join(cmd) + '\n')
+
+        with open(os.devnull, 'w') as fnull:
+            try:
+                err = subprocess.call(cmd, stdout=fnull, stderr=fnull)
+            except subprocess.CalledProcessError:
+                sys.stderr.write('Error executing adb shell')
+                return 1
 
         if err != 0:
-            sys.stderr.write("Cannot push the file, "
-                             "%s, error %d" % (dst, err))
+            sys.stderr.write('Cannot push the file, '
+                             '%s, error %d' % (dst, err))
             return 1
         return 0
 
     def rm(self, dst):
         """Remove file from device."""
-        cmd = ["adb", "shell", "rm", pipes.quote(dst)]
-        err = subprocess.check_output(cmd)
+        if self.error:
+            sys.stderr.write(self.error)
+            return 1
 
-        if err != "":
+        cmd = [self.conf.adb_command, 'shell', 'rm', dst]
+        try:
+            err = subprocess.check_output(cmd)
+        except subprocess.CalledProcessError:
+            sys.stderr.write('Error executing adb shell')
+            return 1
+
+        if err != '':
             sys.stderr.write(err)
             return 1
         return 0
 
     def rmdir(self, dst):
         """Remove directory from device."""
-        cmd = ["adb", "shell", "rm", "-r", pipes.quote(dst)]
-        err = subprocess.check_output(cmd)
+        if self.error:
+            sys.stderr.write(self.error)
+            return 1
 
-        if err != "":
+        cmd = [self.conf.adb_command, 'shell', 'rm', '-r', dst]
+        try:
+            err = subprocess.check_output(cmd)
+        except subprocess.CalledProcessError:
+            sys.stderr.write('Error executing adb shell')
+            return 1
+
+        if err != '':
             sys.stderr.write(err)
             return 1
         return 0
 
     def mkdir(self, dst):
         """Make directory on the device through adb."""
-        cmd = ["adb", "shell", "mkdir", pipes.quote(dst)]
-        err = subprocess.check_output(cmd)
+        if self.error:
+            sys.stderr.write(self.error)
+            return 1
 
-        if err != "":
+        if not dst.startswith('/'):
+            dst = '/' + dst
+
+        cmd = [self.conf.adb_command, 'shell', 'mkdir', dst]
+        try:
+            err = subprocess.check_output(cmd)
+        except subprocess.CalledProcessError:
+            sys.stderr.write('Error executing adb shell')
+            return 1
+
+        if err != '':
             sys.stderr.write(err)
             return 1
         return 0
@@ -301,39 +543,55 @@ CALL_MAP = {'list': lambda a: Adb().list(),
             'rm': lambda a: Adb().rm(a.dst),
             'run': lambda a: Adb().run(a.dst)}
 
+
 def main():
     """parse commandline"""
-    try:
-        if DEBUG:
-            sys.stderr.write("commandline: %s\n" % " ".join(sys.argv))
-        if sys.argv[1] not in ('list', 'copyin', 'copyout', 'rm', "rmdir",
-                               'mkdir', "run"):
-            sys.exit(2)
-    except IndexError:
-        sys.exit(2)
+    parser = argparse.ArgumentParser()
+    subparsers = parser.add_subparsers(help='supported commands')
+    parser_list = subparsers.add_parser('list')
+    parser_copyin = subparsers.add_parser('copyin')
+    parser_copyout = subparsers.add_parser('copyout')
+    parser_rm = subparsers.add_parser('rm')
+    parser_mkdir = subparsers.add_parser('mkdir')
+    parser_rmdir = subparsers.add_parser('rmdir')
+    parser_run = subparsers.add_parser('run')
 
-    class Arg(object):
-        """Mimic argparse/optparse object"""
-        dst = None
-        src = None
-        arch = None
+    parser_list.add_argument('arch')
+    parser_list.set_defaults(func=CALL_MAP['list'])
 
-    arg = Arg()
+    parser_copyin.add_argument('arch')
+    parser_copyin.add_argument('dst')
+    parser_copyin.add_argument('src')
+    parser_copyin.set_defaults(func=CALL_MAP['copyin'])
 
-    try:
-        arg.arch = sys.argv[2]
-        if sys.argv[1] == 'copyin':
-            arg.src = sys.argv[4]
-            arg.dst = sys.argv[3]
-        if sys.argv[1] == 'copyout':
-            arg.src = sys.argv[3]
-            arg.dst = sys.argv[4]
-        elif sys.argv[1] in ('rm', 'rmdir', 'run', 'mkdir'):
-            arg.dst = sys.argv[3]
-    except IndexError:
-        sys.exit(2)
+    parser_copyout.add_argument('arch')
+    parser_copyout.add_argument('src')
+    parser_copyout.add_argument('dst')
+    parser_copyout.set_defaults(func=CALL_MAP['copyout'])
 
-    return CALL_MAP[sys.argv[1]](arg)
+    parser_rm.add_argument('arch')
+    parser_rm.add_argument('dst')
+    parser_rm.set_defaults(func=CALL_MAP['rm'])
 
-if __name__ == "__main__":
+    parser_mkdir.add_argument('arch')
+    parser_mkdir.add_argument('dst')
+    parser_mkdir.set_defaults(func=CALL_MAP['mkdir'])
+
+    parser_rmdir.add_argument('arch')
+    parser_rmdir.add_argument('dst')
+    parser_rmdir.set_defaults(func=CALL_MAP['rmdir'])
+
+    parser_run.add_argument('arch')
+    parser_run.add_argument('dst')
+    parser_run.set_defaults(func=CALL_MAP['run'])
+
+    parser.add_argument('--version', action='version',
+                        version='%(prog)s ' + str(__version__))
+
+    args = parser.parse_args()
+
+    return args.func(args)
+
+
+if __name__ == '__main__':
     sys.exit(main())