def _prefix_env_vars(command, local=False):
 env_vars = {}
 path = env.path
 if path:
  if (env.path_behavior == 'append'):
   path = ('$PATH:"%s"' % path)
  elif (env.path_behavior == 'prepend'):
   path = ('"%s":$PATH' % path)
  elif (env.path_behavior == 'replace'):
   path = ('"%s"' % path)
  env_vars['PATH'] = path
 env_vars.update(env.shell_env)
 if env_vars:
  (set_cmd, exp_cmd) = ('', '')
  if (win32 and local):
   set_cmd = 'SET '
  else:
   exp_cmd = 'export '
  exports = ' '.join((('%s%s="%s"' % (set_cmd, k, (v if (k == 'PATH') else _shell_escape(v)))) for (k, v) in env_vars.iteritems()))
  shell_env_str = ('%s%s && ' % (exp_cmd, exports))
 else:
  shell_env_str = ''
 return (shell_env_str + command)

def _prefix_env_vars ( command , local = False ) : env_vars = { } path = env . path if path : if ( env . path_behavior == 'append' ) : path = ( '$PATH:"%s"' % path ) elif ( env . path_behavior == 'prepend' ) : path = ( '"%s":$PATH' % path ) elif ( env . path_behavior == 'replace' ) : path = ( '"%s"' % path ) env_vars [ 'PATH' ] = path env_vars . update ( env . shell_env ) if env_vars : ( set_cmd , exp_cmd ) = ( '' , '' ) if ( win32 and local ) : set_cmd = 'SET ' else : exp_cmd = 'export ' exports = ' ' . join ( ( ( '%s%s="%s"' % ( set_cmd , k , ( v if ( k == 'PATH' ) else _shell_escape ( v ) ) ) ) for ( k , v ) in env_vars . iteritems ( ) ) ) shell_env_str = ( '%s%s && ' % ( exp_cmd , exports ) ) else : shell_env_str = '' return ( shell_env_str + command )
prefixes command with any shell environment vars .