stat.t

UNIX下perl实现代码

#!./perl

# $RCSfile: stat.t,v $$Revision: 4.1 $$Date: 92/08/07 18:28:28 $

BEGIN {
    chdir 't' if -d 't';
    @INC = '../lib';
}

use Config;

print "1..58\n";

$Is_MSWin32 = $^O eq 'MSWin32';
$Is_Dos = $^O eq 'dos';
$Is_Dosish = $Is_Dos || $^O eq 'os2' || $Is_MSWin32;
$Is_Cygwin = $^O eq 'cygwin';
chop($cwd = ($Is_MSWin32 ? `cd` : `pwd`));

$DEV = `ls -l /dev` unless $Is_Dosish or $Is_Cygwin;

unlink "Op.stat.tmp";
if (open(FOO, ">Op.stat.tmp")) {
  # hack to make Apollo update link count:
  $junk = `ls Op.stat.tmp` unless ($Is_MSWin32 || $Is_Dos);

  ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
   $blksize,$blocks) = stat(FOO);
  if ($nlink == 1) {
    print "ok 1\n";
  }
  else {
    print "# res=$res, nlink=$nlink.\nnot ok 1\n";
  }
  if ($Is_MSWin32 or $Is_Cygwin or $Is_Dos || ($mtime && $mtime == $ctime)) {
    print "ok 2\n";
  }
  else {
    print "# |$mtime| vs |$ctime|\nnot ok 2\n";
  }

  my $funky_FAT_timestamps = $Is_Cygwin;

  sleep 3 if $funky_FAT_timestamps;

  print FOO "Now is the time for all good men to come to.\n";
  close(FOO);

  sleep 2 unless $funky_FAT_timestamps;

} else {
  print "# open failed: $!\nnot ok 1\nnot ok 2\n";
}

if ($Is_Dosish) { unlink "Op.stat.tmp2"}
else {
    `rm -f Op.stat.tmp2;ln Op.stat.tmp Op.stat.tmp2; chmod 644 Op.stat.tmp`;
}

($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
    $blksize,$blocks) = stat('Op.stat.tmp');

if ($Is_Dosish || $Config{dont_use_nlink})
    {print "ok 3 # skipped: no link count\n";} 
elsif ($nlink == 2)
    {print "ok 3\n";} 
else {print "# \$nlink is |$nlink|\nnot ok 3\n";}

if (   $Is_Dosish
        # Solaris tmpfs bug
	|| ($cwd =~ m#^/tmp# and $mtime && $mtime==$ctime && $^O eq 'solaris')
	|| $cwd =~ m#/afs/#
	|| $^O eq 'amigaos') {
    print "ok 4 # skipped: different semantic of mtime/ctime\n";
}
elsif (   ($mtime && $mtime != $ctime)  ) {
    print "ok 4\n";
}
else {
    print "not ok 4\n";
    print "#4 If test op/stat.t fails test 4, check if you are on a tmpfs\n";
    print "#4 of some sort.  Building in /tmp sometimes has this problem.\n";
    print "#4 Also building on the ClearCase VOBS filesystem may cause this failure.\n";
}
print "#4	:$mtime: should != :$ctime:\n";

unlink "Op.stat.tmp" or print "# unlink failed: $!\n";
if ($Is_MSWin32) {  open F, '>Op.stat.tmp' and close F }
else             { `touch Op.stat.tmp` }

if (-z 'Op.stat.tmp') {print "ok 5\n";} else {print "not ok 5\n";}
if (! -s 'Op.stat.tmp') {print "ok 6\n";} else {print "not ok 6\n";}

$Is_MSWin32 ? `cmd /c echo hi > Op.stat.tmp` : `echo hi >Op.stat.tmp`;
if (! -z 'Op.stat.tmp') {print "ok 7\n";} else {print "not ok 7\n";}
if (-s 'Op.stat.tmp') {print "ok 8\n";} else {print "not ok 8\n";}

unlink 'Op.stat.tmp' or print "# unlink failed: $!\n";
$olduid = $>;		# can't test -r if uid == 0
$Is_MSWin32 ? `cmd /c echo hi > Op.stat.tmp` : `echo hi >Op.stat.tmp`;
chmod 0,'Op.stat.tmp';
eval '$> = 1;';		# so switch uid (may not be implemented)
if (!$> || $Is_Dos || ! -r 'Op.stat.tmp') {print "ok 9\n";} else {print "not ok 9\n";}
if (!$> || ! -w 'Op.stat.tmp') {print "ok 10\n";} else {print "not ok 10\n";}
eval '$> = $olduid;';		# switch uid back (may not be implemented)
print "# olduid=$olduid, newuid=$>\n" unless ($> == $olduid);

if (! -x 'Op.stat.tmp') {print "ok 11\n";}
else                    {print "not ok 11\n";}

foreach ((12,13,14,15,16,17)) {
    print "ok $_\n";		#deleted tests
}

# in ms windows, Op.stat.tmp inherits owner uid from directory
# not sure about os/2, but chown is harmless anyway
eval { chown $>,'Op.stat.tmp'; 1 } or print "# $@" ;
chmod 0700,'Op.stat.tmp';
if (-r 'Op.stat.tmp') {print "ok 18\n";} else {print "not ok 18\n";}
if (-w 'Op.stat.tmp') {print "ok 19\n";} else {print "not ok 19\n";}
if ($Is_Dosish) {print "ok 20 # skipped: -x by extension\n";} 
elsif (-x 'Op.stat.tmp') {print "ok 20\n";} 
else {print "not ok 20\n";}

if (-f 'Op.stat.tmp') {print "ok 21\n";} else {print "not ok 21\n";}
if (! -d 'Op.stat.tmp') {print "ok 22\n";} else {print "not ok 22\n";}

if (-d '.') {print "ok 23\n";} else {print "not ok 23\n";}
if (! -f '.') {print "ok 24\n";} else {print "not ok 24\n";}

if (!$Is_Dosish and `ls -l perl` =~ /^l.*->/) {
    if (-l 'perl') {print "ok 25\n";} else {print "not ok 25\n";}
}
else {
    print "ok 25\n";
}

if (-o 'Op.stat.tmp') {print "ok 26\n";} else {print "not ok 26\n";}

if (-e 'Op.stat.tmp') {print "ok 27\n";} else {print "not ok 27\n";}
unlink 'Op.stat.tmp2';
if (! -e 'Op.stat.tmp2') {print "ok 28\n";} else {print "not ok 28\n";}

if ($Is_MSWin32 || $Is_Dos)
    {print "ok 29\n";}
elsif ($DEV !~ /\nc.* (\S+)\n/)
    {print "ok 29\n";}
elsif (-c "/dev/$1")
    {print "ok 29\n";}
else
    {print "not ok 29\n";}
if (! -c '.') {print "ok 30\n";} else {print "not ok 30\n";}

if ($Is_MSWin32 || $Is_Dos)
    {print "ok 31\n";}
elsif ($DEV !~ /\ns.* (\S+)\n/)
    {print "ok 31\n";}
elsif (-S "/dev/$1")
    {print "ok 31\n";}
else
    {print "not ok 31\n";}
if (! -S '.') {print "ok 32\n";} else {print "not ok 32\n";}

if ($Is_MSWin32 || $Is_Dos)
    {print "ok 33\n";}
elsif ($DEV !~ /\nb.* (\S+)\n/)
    {print "ok 33\n";}
elsif (-b "/dev/$1")
    {print "ok 33\n";}
else
    {print "not ok 33\n";}
if (! -b '.') {print "ok 34\n";} else {print "not ok 34\n";}

if ($^O eq 'mpeix' or $^O eq 'amigaos' or $Is_Dosish or $Is_Cygwin) {
  print "ok 35 # skipped: no -u\n"; goto tty_test;
}

$cnt = $uid = 0;

die "Can't run op/stat.t test 35 without pwd working" unless $cwd;
my @bin = grep {-d} ($^O eq 'machten' ?
		     qw(/usr/bin /bin) :
		     qw(/sbin /usr/sbin /bin /usr/bin));
unless (@bin) { print ("not ok 35\n"), goto tty_test; }
for my $bin (@bin) {
    opendir BIN, $bin or die "Can't opendir $bin: $!";
    while (defined($_ = readdir BIN)) {
        $_ = "$bin/$_";
        $cnt++;
        $uid++ if -u;
        last if $uid && $uid < $cnt;
    }
}
closedir BIN;

# I suppose this is going to fail somewhere...
if ($uid > 0 && $uid < $cnt)
    {print "ok 35\n";}
else
    {print "not ok 35 \n# ($uid $cnt)\n";}

tty_test:

# To assist in automated testing when a controlling terminal (/dev/tty)
# may not be available (at, cron  rsh etc), the PERL_SKIP_TTY_TEST env var
# can be set to skip the tests that need a tty.
unless($ENV{PERL_SKIP_TTY_TEST}) {
    if ($Is_MSWin32) {
	print "ok 36\n";
	print "ok 37\n";
    }
    else {
	my $TTY = "/dev/tty";

	$TTY = "/dev/ttyp0" if $^O eq 'rhapsody';

	if (defined $TTY) {
	    unless (open(TTY, $TTY)) {
		print STDERR "Can't open $TTY--run t/TEST outside of make.\n";
	    }
	    if (-t TTY) {print "ok 36\n";} else {print "not ok 36\n";}
	    if (-c TTY) {print "ok 37\n";} else {print "not ok 37\n";}
	    close(TTY);
	} else { # if some platform completely undefines $TTY
	    print "ok 36 # skipped\n";
	    print "ok 37 # skipped\n";
	}
    }
    if (! -t TTY) {print "ok 38\n";} else {print "not ok 38\n";}
    if (-t)       {print "ok 39\n";} else {print "not ok 39\n";}
}
else {
    print "ok 36\n";
    print "ok 37\n";
    print "ok 38\n";
    print "ok 39\n";
}
open(null,"/dev/null");
if (! -t null || -e '/xenix' || $^O eq 'machten' || $Is_MSWin32)
	{print "ok 40\n";} else {print "not ok 40\n";}
close(null);

# These aren't strictly "stat" calls, but so what?

if (-T 'op/stat.t') {print "ok 41\n";} else {print "not ok 41\n";}
if (! -B 'op/stat.t') {print "ok 42\n";} else {print "not ok 42\n";}

if (-B './perl' || -B './perl.exe') {print "ok 43\n";} else {print "not ok 43\n";}
if (! -T './perl' && ! -T './perl.exe') {print "ok 44\n";} else {print "not ok 44\n";}

open(FOO,'op/stat.t');
eval { -T FOO; };
if ($@ =~ /not implemented/) {
    print "# $@";
    for (45 .. 54) {
	print "ok $_\n";
    }
}
else {
    if (-T FOO) {print "ok 45\n";} else {print "not ok 45\n";}
    if (! -B FOO) {print "ok 46\n";} else {print "not ok 46\n";}
    $_ = <FOO>;
    if (/perl/) {print "ok 47\n";} else {print "not ok 47\n";}
    if (-T FOO) {print "ok 48\n";} else {print "not ok 48\n";}
    if (! -B FOO) {print "ok 49\n";} else {print "not ok 49\n";}
    close(FOO);

    open(FOO,'op/stat.t');
    $_ = <FOO>;
    if (/perl/) {print "ok 50\n";} else {print "not ok 50\n";}
    if (-T FOO) {print "ok 51\n";} else {print "not ok 51\n";}
    if (! -B FOO) {print "ok 52\n";} else {print "not ok 52\n";}
    seek(FOO,0,0);
    if (-T FOO) {print "ok 53\n";} else {print "not ok 53\n";}
    if (! -B FOO) {print "ok 54\n";} else {print "not ok 54\n";}
}
close(FOO);

if (-T '/dev/null') {print "ok 55\n";} else {print "not ok 55\n";}
if (-B '/dev/null') {print "ok 56\n";} else {print "not ok 56\n";}

# and now, a few parsing tests:
$_ = 'Op.stat.tmp';
if (-f) {print "ok 57\n";} else {print "not ok 57\n";}
if (-f()) {print "ok 58\n";} else {print "not ok 58\n";}

unlink 'Op.stat.tmp' or print "# unlink failed: $!\n";