NXc@sCddlZddlZddlZdZdZdZdS(iNcCstjj|}tjj|s(tStj|j}tjj dr}tj dkr}t |tj tj BtjB@Stj|tjS(sChecks that path is an executable regular file, or a symlink towards one. This is roughly ``os.path isfile(path) and os.access(path, os.X_OK)``. tsunosi(tostpathtrealpathtisfiletFalsetstattst_modetsystplatformt startswithtgetuidtbooltS_IXUSRtS_IXGRPtS_IXOTHtaccesstX_OK(Rtfpathtmode((sE/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/pexpect/utils.pytis_executable_files  cCstjj|dkr(t|r(|SdtjksJtjddkrVtj}n tjd}|jtj}x3|D]+}tjj||}t|r||Sq|WdS(sThis takes a given filename; tries to find it in the environment path; then checks if it is executable. This returns the full path to the filename if found and executable. Otherwise this returns None.ttPATHN( RRtdirnameRtenvirontdefpathtsplittpathseptjointNone(tfilenametptpathlistRtff((sE/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/pexpect/utils.pytwhich"s$"    c Csg}d}d}d}d}d}d}|}x.|D]&} ||ksU||kr| dkrj|}q]| dkr|}q]| d kr|}q]| jr||krd q|j|d}|}q]|| }|}q7||kr|| }|}q7||kr/| dkr"|}q]|| }q7||kr7| d krP|}q]|| }q7q7W|dkr}|j|n|S( sThis splits a command line into a list of arguments. It splits arguments on spaces, but handles embedded quotes, doublequotes, and escaped characters. It's impossible to do this with a regular expression, so I wrote a little state machine to parse the command line. Riiiiis\t't"N(tisspaceRtappend( t command_linetarg_listtargt state_basict state_esctstate_singlequotetstate_doublequotetstate_whitespacetstatetc((sE/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/pexpect/utils.pytsplit_command_line6sL                        (RRRRR"R1(((sE/data/av2000/mvv/env_mvv/lib/python2.7/site-packages/pexpect/utils.pyts